/**
 * vis.js
 * https://github.com/almende/vis
 *
 * A dynamic, browser-based visualization library.
 *
 * @version 4.14.0
 * @date    2016-02-04
 *
 * @license
 * Copyright (C) 2011-2016 Almende B.V, http://almende.com
 *
 * Vis.js is dual licensed under both
 *
 * * The Apache 2.0 License
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * and
 *
 * * The MIT License
 *   http://opensource.org/licenses/MIT
 *
 * Vis.js may be distributed under either license.
 */

"use strict";

(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
	else if(typeof exports === 'object')
		exports["vis"] = factory();
	else
		root["vis"] = factory();
})(this, function() {
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/******/ 			id: moduleId,
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/******/ 	// expose the modules object (__webpack_modules__)
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/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
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/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {

  // utils
  'use strict';

  exports.util = __webpack_require__(1);
  exports.DOMutil = __webpack_require__(7);

  // data
  exports.DataSet = __webpack_require__(8);
  exports.DataView = __webpack_require__(10);
  exports.Queue = __webpack_require__(9);

  // Graph3d
  exports.Graph3d = __webpack_require__(11);
  exports.graph3d = {
    Camera: __webpack_require__(15),
    Filter: __webpack_require__(16),
    Point2d: __webpack_require__(14),
    Point3d: __webpack_require__(13),
    Slider: __webpack_require__(17),
    StepNumber: __webpack_require__(18)
  };

  // Timeline
  exports.Timeline = __webpack_require__(19);
  exports.Graph2d = __webpack_require__(48);
  exports.timeline = {
    Core: __webpack_require__(27),
    DateUtil: __webpack_require__(26),
    Range: __webpack_require__(23),
    stack: __webpack_require__(31),
    TimeStep: __webpack_require__(29),

    components: {
      items: {
        Item: __webpack_require__(33),
        BackgroundItem: __webpack_require__(37),
        BoxItem: __webpack_require__(35),
        PointItem: __webpack_require__(36),
        RangeItem: __webpack_require__(32)
      },

      BackgroundGroup: __webpack_require__(34),
      Component: __webpack_require__(25),
      CurrentTime: __webpack_require__(43),
      CustomTime: __webpack_require__(41),
      DataAxis: __webpack_require__(50),
      DataScale: __webpack_require__(51),
      GraphGroup: __webpack_require__(52),
      Group: __webpack_require__(30),
      ItemSet: __webpack_require__(28),
      Legend: __webpack_require__(56),
      LineGraph: __webpack_require__(49),
      TimeAxis: __webpack_require__(38)
    }
  };

  // Network
  exports.Network = __webpack_require__(58);
  exports.network = {
    Images: __webpack_require__(116),
    dotparser: __webpack_require__(114),
    gephiParser: __webpack_require__(115),
    allOptions: __webpack_require__(110)
  };
  exports.network.convertDot = function (input) {
    return exports.network.dotparser.DOTToGraph(input);
  };
  exports.network.convertGephi = function (input, options) {
    return exports.network.gephiParser.parseGephi(input, options);
  };

  // bundled external libraries
  exports.moment = __webpack_require__(2);
  exports.Hammer = __webpack_require__(20);
  exports.keycharm = __webpack_require__(40);

/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {

  // utility functions

  // first check if moment.js is already loaded in the browser window, if so,
  // use this instance. Else, load via commonjs.

  'use strict';

  var moment = __webpack_require__(2);
  var uuid = __webpack_require__(6);

  /**
   * Test whether given object is a number
   * @param {*} object
   * @return {Boolean} isNumber
   */
  exports.isNumber = function (object) {
    return object instanceof Number || typeof object == 'number';
  };

  /**
   * Remove everything in the DOM object
   * @param DOMobject
   */
  exports.recursiveDOMDelete = function (DOMobject) {
    if (DOMobject) {
      while (DOMobject.hasChildNodes() === true) {
        exports.recursiveDOMDelete(DOMobject.firstChild);
        DOMobject.removeChild(DOMobject.firstChild);
      }
    }
  };

  /**
   * this function gives you a range between 0 and 1 based on the min and max values in the set, the total sum of all values and the current value.
   *
   * @param min
   * @param max
   * @param total
   * @param value
   * @returns {number}
   */
  exports.giveRange = function (min, max, total, value) {
    if (max == min) {
      return 0.5;
    } else {
      var scale = 1 / (max - min);
      return Math.max(0, (value - min) * scale);
    }
  };

  /**
   * Test whether given object is a string
   * @param {*} object
   * @return {Boolean} isString
   */
  exports.isString = function (object) {
    return object instanceof String || typeof object == 'string';
  };

  /**
   * Test whether given object is a Date, or a String containing a Date
   * @param {Date | String} object
   * @return {Boolean} isDate
   */
  exports.isDate = function (object) {
    if (object instanceof Date) {
      return true;
    } else if (exports.isString(object)) {
      // test whether this string contains a date
      var match = ASPDateRegex.exec(object);
      if (match) {
        return true;
      } else if (!isNaN(Date.parse(object))) {
        return true;
      }
    }

    return false;
  };

  /**
   * Create a semi UUID
   * source: http://stackoverflow.com/a/105074/1262753
   * @return {String} uuid
   */
  exports.randomUUID = function () {
    return uuid.v4();
  };

  /**
   * assign all keys of an object that are not nested objects to a certain value (used for color objects).
   * @param obj
   * @param value
   */
  exports.assignAllKeys = function (obj, value) {
    for (var prop in obj) {
      if (obj.hasOwnProperty(prop)) {
        if (typeof obj[prop] !== 'object') {
          obj[prop] = value;
        }
      }
    }
  };

  /**
   * Fill an object with a possibly partially defined other object. Only copies values if the a object has an object requiring values.
   * That means an object is not created on a property if only the b object has it.
   * @param obj
   * @param value
   */
  exports.fillIfDefined = function (a, b) {
    var allowDeletion = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

    for (var prop in a) {
      if (b[prop] !== undefined) {
        if (typeof b[prop] !== 'object') {
          if ((b[prop] === undefined || b[prop] === null) && a[prop] !== undefined && allowDeletion === true) {
            delete a[prop];
          } else {
            a[prop] = b[prop];
          }
        } else {
          if (typeof a[prop] === 'object') {
            exports.fillIfDefined(a[prop], b[prop], allowDeletion);
          }
        }
      }
    }
  };

  /**
   * Extend object a with the properties of object b or a series of objects
   * Only properties with defined values are copied
   * @param {Object} a
   * @param {... Object} b
   * @return {Object} a
   */
  exports.protoExtend = function (a, b) {
    for (var i = 1; i < arguments.length; i++) {
      var other = arguments[i];
      for (var prop in other) {
        a[prop] = other[prop];
      }
    }
    return a;
  };

  /**
   * Extend object a with the properties of object b or a series of objects
   * Only properties with defined values are copied
   * @param {Object} a
   * @param {... Object} b
   * @return {Object} a
   */
  exports.extend = function (a, b) {
    for (var i = 1; i < arguments.length; i++) {
      var other = arguments[i];
      for (var prop in other) {
        if (other.hasOwnProperty(prop)) {
          a[prop] = other[prop];
        }
      }
    }
    return a;
  };

  /**
   * Extend object a with selected properties of object b or a series of objects
   * Only properties with defined values are copied
   * @param {Array.<String>} props
   * @param {Object} a
   * @param {Object} b
   * @return {Object} a
   */
  exports.selectiveExtend = function (props, a, b) {
    if (!Array.isArray(props)) {
      throw new Error('Array with property names expected as first argument');
    }

    for (var i = 2; i < arguments.length; i++) {
      var other = arguments[i];

      for (var p = 0; p < props.length; p++) {
        var prop = props[p];
        if (other.hasOwnProperty(prop)) {
          a[prop] = other[prop];
        }
      }
    }
    return a;
  };

  /**
   * Extend object a with selected properties of object b or a series of objects
   * Only properties with defined values are copied
   * @param {Array.<String>} props
   * @param {Object} a
   * @param {Object} b
   * @return {Object} a
   */
  exports.selectiveDeepExtend = function (props, a, b) {
    var allowDeletion = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];

    // TODO: add support for Arrays to deepExtend
    if (Array.isArray(b)) {
      throw new TypeError('Arrays are not supported by deepExtend');
    }
    for (var i = 2; i < arguments.length; i++) {
      var other = arguments[i];
      for (var p = 0; p < props.length; p++) {
        var prop = props[p];
        if (other.hasOwnProperty(prop)) {
          if (b[prop] && b[prop].constructor === Object) {
            if (a[prop] === undefined) {
              a[prop] = {};
            }
            if (a[prop].constructor === Object) {
              exports.deepExtend(a[prop], b[prop], false, allowDeletion);
            } else {
              if (b[prop] === null && a[prop] !== undefined && allowDeletion === true) {
                delete a[prop];
              } else {
                a[prop] = b[prop];
              }
            }
          } else if (Array.isArray(b[prop])) {
            throw new TypeError('Arrays are not supported by deepExtend');
          } else {
            if (b[prop] === null && a[prop] !== undefined && allowDeletion === true) {
              delete a[prop];
            } else {
              a[prop] = b[prop];
            }
          }
        }
      }
    }
    return a;
  };

  /**
   * Extend object a with selected properties of object b or a series of objects
   * Only properties with defined values are copied
   * @param {Array.<String>} props
   * @param {Object} a
   * @param {Object} b
   * @return {Object} a
   */
  exports.selectiveNotDeepExtend = function (props, a, b) {
    var allowDeletion = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];

    // TODO: add support for Arrays to deepExtend
    if (Array.isArray(b)) {
      throw new TypeError('Arrays are not supported by deepExtend');
    }
    for (var prop in b) {
      if (b.hasOwnProperty(prop)) {
        if (props.indexOf(prop) == -1) {
          if (b[prop] && b[prop].constructor === Object) {
            if (a[prop] === undefined) {
              a[prop] = {};
            }
            if (a[prop].constructor === Object) {
              exports.deepExtend(a[prop], b[prop]);
            } else {
              if (b[prop] === null && a[prop] !== undefined && allowDeletion === true) {
                delete a[prop];
              } else {
                a[prop] = b[prop];
              }
            }
          } else if (Array.isArray(b[prop])) {
            a[prop] = [];
            for (var i = 0; i < b[prop].length; i++) {
              a[prop].push(b[prop][i]);
            }
          } else {
            if (b[prop] === null && a[prop] !== undefined && allowDeletion === true) {
              delete a[prop];
            } else {
              a[prop] = b[prop];
            }
          }
        }
      }
    }
    return a;
  };

  /**
   * Deep extend an object a with the properties of object b
   * @param {Object} a
   * @param {Object} b
   * @param [Boolean] protoExtend --> optional parameter. If true, the prototype values will also be extended.
   *                                  (ie. the options objects that inherit from others will also get the inherited options)
   * @param [Boolean] global      --> optional parameter. If true, the values of fields that are null will not deleted
   * @returns {Object}
   */
  exports.deepExtend = function (a, b, protoExtend, allowDeletion) {
    for (var prop in b) {
      if (b.hasOwnProperty(prop) || protoExtend === true) {
        if (b[prop] && b[prop].constructor === Object) {
          if (a[prop] === undefined) {
            a[prop] = {};
          }
          if (a[prop].constructor === Object) {
            exports.deepExtend(a[prop], b[prop], protoExtend);
          } else {
            if (b[prop] === null && a[prop] !== undefined && allowDeletion === true) {
              delete a[prop];
            } else {
              a[prop] = b[prop];
            }
          }
        } else if (Array.isArray(b[prop])) {
          a[prop] = [];
          for (var i = 0; i < b[prop].length; i++) {
            a[prop].push(b[prop][i]);
          }
        } else {
          if (b[prop] === null && a[prop] !== undefined && allowDeletion === true) {
            delete a[prop];
          } else {
            a[prop] = b[prop];
          }
        }
      }
    }
    return a;
  };

  /**
   * Test whether all elements in two arrays are equal.
   * @param {Array} a
   * @param {Array} b
   * @return {boolean} Returns true if both arrays have the same length and same
   *                   elements.
   */
  exports.equalArray = function (a, b) {
    if (a.length != b.length) return false;

    for (var i = 0, len = a.length; i < len; i++) {
      if (a[i] != b[i]) return false;
    }

    return true;
  };

  /**
   * Convert an object to another type
   * @param {Boolean | Number | String | Date | Moment | Null | undefined} object
   * @param {String | undefined} type   Name of the type. Available types:
   *                                    'Boolean', 'Number', 'String',
   *                                    'Date', 'Moment', ISODate', 'ASPDate'.
   * @return {*} object
   * @throws Error
   */
  exports.convert = function (object, type) {
    var match;

    if (object === undefined) {
      return undefined;
    }
    if (object === null) {
      return null;
    }

    if (!type) {
      return object;
    }
    if (!(typeof type === 'string') && !(type instanceof String)) {
      throw new Error('Type must be a string');
    }

    //noinspection FallthroughInSwitchStatementJS
    switch (type) {
      case 'boolean':
      case 'Boolean':
        return Boolean(object);

      case 'number':
      case 'Number':
        return Number(object.valueOf());

      case 'string':
      case 'String':
        return String(object);

      case 'Date':
        if (exports.isNumber(object)) {
          return new Date(object);
        }
        if (object instanceof Date) {
          return new Date(object.valueOf());
        } else if (moment.isMoment(object)) {
          return new Date(object.valueOf());
        }
        if (exports.isString(object)) {
          match = ASPDateRegex.exec(object);
          if (match) {
            // object is an ASP date
            return new Date(Number(match[1])); // parse number
          } else {
              return moment(object).toDate(); // parse string
            }
        } else {
            throw new Error('Cannot convert object of type ' + exports.getType(object) + ' to type Date');
          }

      case 'Moment':
        if (exports.isNumber(object)) {
          return moment(object);
        }
        if (object instanceof Date) {
          return moment(object.valueOf());
        } else if (moment.isMoment(object)) {
          return moment(object);
        }
        if (exports.isString(object)) {
          match = ASPDateRegex.exec(object);
          if (match) {
            // object is an ASP date
            return moment(Number(match[1])); // parse number
          } else {
              return moment(object); // parse string
            }
        } else {
            throw new Error('Cannot convert object of type ' + exports.getType(object) + ' to type Date');
          }

      case 'ISODate':
        if (exports.isNumber(object)) {
          return new Date(object);
        } else if (object instanceof Date) {
          return object.toISOString();
        } else if (moment.isMoment(object)) {
          return object.toDate().toISOString();
        } else if (exports.isString(object)) {
          match = ASPDateRegex.exec(object);
          if (match) {
            // object is an ASP date
            return new Date(Number(match[1])).toISOString(); // parse number
          } else {
              return new Date(object).toISOString(); // parse string
            }
        } else {
            throw new Error('Cannot convert object of type ' + exports.getType(object) + ' to type ISODate');
          }

      case 'ASPDate':
        if (exports.isNumber(object)) {
          return '/Date(' + object + ')/';
        } else if (object instanceof Date) {
          return '/Date(' + object.valueOf() + ')/';
        } else if (exports.isString(object)) {
          match = ASPDateRegex.exec(object);
          var value;
          if (match) {
            // object is an ASP date
            value = new Date(Number(match[1])).valueOf(); // parse number
          } else {
              value = new Date(object).valueOf(); // parse string
            }
          return '/Date(' + value + ')/';
        } else {
          throw new Error('Cannot convert object of type ' + exports.getType(object) + ' to type ASPDate');
        }

      default:
        throw new Error('Unknown type "' + type + '"');
    }
  };

  // parse ASP.Net Date pattern,
  // for example '/Date(1198908717056)/' or '/Date(1198908717056-0700)/'
  // code from http://momentjs.com/
  var ASPDateRegex = /^\/?Date\((\-?\d+)/i;

  /**
   * Get the type of an object, for example exports.getType([]) returns 'Array'
   * @param {*} object
   * @return {String} type
   */
  exports.getType = function (object) {
    var type = typeof object;

    if (type == 'object') {
      if (object === null) {
        return 'null';
      }
      if (object instanceof Boolean) {
        return 'Boolean';
      }
      if (object instanceof Number) {
        return 'Number';
      }
      if (object instanceof String) {
        return 'String';
      }
      if (Array.isArray(object)) {
        return 'Array';
      }
      if (object instanceof Date) {
        return 'Date';
      }
      return 'Object';
    } else if (type == 'number') {
      return 'Number';
    } else if (type == 'boolean') {
      return 'Boolean';
    } else if (type == 'string') {
      return 'String';
    } else if (type === undefined) {
      return 'undefined';
    }

    return type;
  };

  /**
   * Used to extend an array and copy it. This is used to propagate paths recursively.
   *
   * @param arr
   * @param newValue
   * @returns {Array}
   */
  exports.copyAndExtendArray = function (arr, newValue) {
    var newArr = [];
    for (var i = 0; i < arr.length; i++) {
      newArr.push(arr[i]);
    }
    newArr.push(newValue);
    return newArr;
  };

  /**
   * Used to extend an array and copy it. This is used to propagate paths recursively.
   *
   * @param arr
   * @param newValue
   * @returns {Array}
   */
  exports.copyArray = function (arr) {
    var newArr = [];
    for (var i = 0; i < arr.length; i++) {
      newArr.push(arr[i]);
    }
    return newArr;
  };

  /**
   * Retrieve the absolute left value of a DOM element
   * @param {Element} elem        A dom element, for example a div
   * @return {number} left        The absolute left position of this element
   *                              in the browser page.
   */
  exports.getAbsoluteLeft = function (elem) {
    return elem.getBoundingClientRect().left;
  };

  /**
   * Retrieve the absolute top value of a DOM element
   * @param {Element} elem        A dom element, for example a div
   * @return {number} top        The absolute top position of this element
   *                              in the browser page.
   */
  exports.getAbsoluteTop = function (elem) {
    return elem.getBoundingClientRect().top;
  };

  /**
   * add a className to the given elements style
   * @param {Element} elem
   * @param {String} className
   */
  exports.addClassName = function (elem, className) {
    var classes = elem.className.split(' ');
    if (classes.indexOf(className) == -1) {
      classes.push(className); // add the class to the array
      elem.className = classes.join(' ');
    }
  };

  /**
   * add a className to the given elements style
   * @param {Element} elem
   * @param {String} className
   */
  exports.removeClassName = function (elem, className) {
    var classes = elem.className.split(' ');
    var index = classes.indexOf(className);
    if (index != -1) {
      classes.splice(index, 1); // remove the class from the array
      elem.className = classes.join(' ');
    }
  };

  /**
   * For each method for both arrays and objects.
   * In case of an array, the built-in Array.forEach() is applied.
   * In case of an Object, the method loops over all properties of the object.
   * @param {Object | Array} object   An Object or Array
   * @param {function} callback       Callback method, called for each item in
   *                                  the object or array with three parameters:
   *                                  callback(value, index, object)
   */
  exports.forEach = function (object, callback) {
    var i, len;
    if (Array.isArray(object)) {
      // array
      for (i = 0, len = object.length; i < len; i++) {
        callback(object[i], i, object);
      }
    } else {
      // object
      for (i in object) {
        if (object.hasOwnProperty(i)) {
          callback(object[i], i, object);
        }
      }
    }
  };

  /**
   * Convert an object into an array: all objects properties are put into the
   * array. The resulting array is unordered.
   * @param {Object} object
   * @param {Array} array
   */
  exports.toArray = function (object) {
    var array = [];

    for (var prop in object) {
      if (object.hasOwnProperty(prop)) array.push(object[prop]);
    }

    return array;
  };

  /**
   * Update a property in an object
   * @param {Object} object
   * @param {String} key
   * @param {*} value
   * @return {Boolean} changed
   */
  exports.updateProperty = function (object, key, value) {
    if (object[key] !== value) {
      object[key] = value;
      return true;
    } else {
      return false;
    }
  };

  /**
   * Throttle the given function to be only executed once every `wait` milliseconds
   * @param {function} fn
   * @param {number} wait    Time in milliseconds
   * @returns {function} Returns the throttled function
   */
  exports.throttle = function (fn, wait) {
    var timeout = null;
    var needExecution = false;

    return function throttled() {
      if (!timeout) {
        needExecution = false;
        fn();

        timeout = setTimeout(function () {
          timeout = null;
          if (needExecution) {
            throttled();
          }
        }, wait);
      } else {
        needExecution = true;
      }
    };
  };

  /**
   * Add and event listener. Works for all browsers
   * @param {Element}     element    An html element
   * @param {string}      action     The action, for example "click",
   *                                 without the prefix "on"
   * @param {function}    listener   The callback function to be executed
   * @param {boolean}     [useCapture]
   */
  exports.addEventListener = function (element, action, listener, useCapture) {
    if (element.addEventListener) {
      if (useCapture === undefined) useCapture = false;

      if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) {
        action = "DOMMouseScroll"; // For Firefox
      }

      element.addEventListener(action, listener, useCapture);
    } else {
      element.attachEvent("on" + action, listener); // IE browsers
    }
  };

  /**
   * Remove an event listener from an element
   * @param {Element}     element         An html dom element
   * @param {string}      action          The name of the event, for example "mousedown"
   * @param {function}    listener        The listener function
   * @param {boolean}     [useCapture]
   */
  exports.removeEventListener = function (element, action, listener, useCapture) {
    if (element.removeEventListener) {
      // non-IE browsers
      if (useCapture === undefined) useCapture = false;

      if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) {
        action = "DOMMouseScroll"; // For Firefox
      }

      element.removeEventListener(action, listener, useCapture);
    } else {
      // IE browsers
      element.detachEvent("on" + action, listener);
    }
  };

  /**
   * Cancels the event if it is cancelable, without stopping further propagation of the event.
   */
  exports.preventDefault = function (event) {
    if (!event) event = window.event;

    if (event.preventDefault) {
      event.preventDefault(); // non-IE browsers
    } else {
        event.returnValue = false; // IE browsers
      }
  };

  /**
   * Get HTML element which is the target of the event
   * @param {Event} event
   * @return {Element} target element
   */
  exports.getTarget = function (event) {
    // code from http://www.quirksmode.org/js/events_properties.html
    if (!event) {
      event = window.event;
    }

    var target;

    if (event.target) {
      target = event.target;
    } else if (event.srcElement) {
      target = event.srcElement;
    }

    if (target.nodeType != undefined && target.nodeType == 3) {
      // defeat Safari bug
      target = target.parentNode;
    }

    return target;
  };

  /**
   * Check if given element contains given parent somewhere in the DOM tree
   * @param {Element} element
   * @param {Element} parent
   */
  exports.hasParent = function (element, parent) {
    var e = element;

    while (e) {
      if (e === parent) {
        return true;
      }
      e = e.parentNode;
    }

    return false;
  };

  exports.option = {};

  /**
   * Convert a value into a boolean
   * @param {Boolean | function | undefined} value
   * @param {Boolean} [defaultValue]
   * @returns {Boolean} bool
   */
  exports.option.asBoolean = function (value, defaultValue) {
    if (typeof value == 'function') {
      value = value();
    }

    if (value != null) {
      return value != false;
    }

    return defaultValue || null;
  };

  /**
   * Convert a value into a number
   * @param {Boolean | function | undefined} value
   * @param {Number} [defaultValue]
   * @returns {Number} number
   */
  exports.option.asNumber = function (value, defaultValue) {
    if (typeof value == 'function') {
      value = value();
    }

    if (value != null) {
      return Number(value) || defaultValue || null;
    }

    return defaultValue || null;
  };

  /**
   * Convert a value into a string
   * @param {String | function | undefined} value
   * @param {String} [defaultValue]
   * @returns {String} str
   */
  exports.option.asString = function (value, defaultValue) {
    if (typeof value == 'function') {
      value = value();
    }

    if (value != null) {
      return String(value);
    }

    return defaultValue || null;
  };

  /**
   * Convert a size or location into a string with pixels or a percentage
   * @param {String | Number | function | undefined} value
   * @param {String} [defaultValue]
   * @returns {String} size
   */
  exports.option.asSize = function (value, defaultValue) {
    if (typeof value == 'function') {
      value = value();
    }

    if (exports.isString(value)) {
      return value;
    } else if (exports.isNumber(value)) {
      return value + 'px';
    } else {
      return defaultValue || null;
    }
  };

  /**
   * Convert a value into a DOM element
   * @param {HTMLElement | function | undefined} value
   * @param {HTMLElement} [defaultValue]
   * @returns {HTMLElement | null} dom
   */
  exports.option.asElement = function (value, defaultValue) {
    if (typeof value == 'function') {
      value = value();
    }

    return value || defaultValue || null;
  };

  /**
   * http://stackoverflow.com/questions/5623838/rgb-to-hex-and-hex-to-rgb
   *
   * @param {String} hex
   * @returns {{r: *, g: *, b: *}} | 255 range
   */
  exports.hexToRGB = function (hex) {
    // Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
    var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
    hex = hex.replace(shorthandRegex, function (m, r, g, b) {
      return r + r + g + g + b + b;
    });
    var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
    return result ? {
      r: parseInt(result[1], 16),
      g: parseInt(result[2], 16),
      b: parseInt(result[3], 16)
    } : null;
  };

  /**
   * This function takes color in hex format or rgb() or rgba() format and overrides the opacity. Returns rgba() string.
   * @param color
   * @param opacity
   * @returns {*}
   */
  exports.overrideOpacity = function (color, opacity) {
    if (color.indexOf("rgba") != -1) {
      return color;
    } else if (color.indexOf("rgb") != -1) {
      var rgb = color.substr(color.indexOf("(") + 1).replace(")", "").split(",");
      return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + opacity + ")";
    } else {
      var rgb = exports.hexToRGB(color);
      if (rgb == null) {
        return color;
      } else {
        return "rgba(" + rgb.r + "," + rgb.g + "," + rgb.b + "," + opacity + ")";
      }
    }
  };

  /**
   *
   * @param red     0 -- 255
   * @param green   0 -- 255
   * @param blue    0 -- 255
   * @returns {string}
   * @constructor
   */
  exports.RGBToHex = function (red, green, blue) {
    return "#" + ((1 << 24) + (red << 16) + (green << 8) + blue).toString(16).slice(1);
  };

  /**
   * Parse a color property into an object with border, background, and
   * highlight colors
   * @param {Object | String} color
   * @return {Object} colorObject
   */
  exports.parseColor = function (color) {
    var c;
    if (exports.isString(color) === true) {
      if (exports.isValidRGB(color) === true) {
        var rgb = color.substr(4).substr(0, color.length - 5).split(',').map(function (value) {
          return parseInt(value);
        });
        color = exports.RGBToHex(rgb[0], rgb[1], rgb[2]);
      }
      if (exports.isValidHex(color) === true) {
        var hsv = exports.hexToHSV(color);
        var lighterColorHSV = { h: hsv.h, s: hsv.s * 0.8, v: Math.min(1, hsv.v * 1.02) };
        var darkerColorHSV = { h: hsv.h, s: Math.min(1, hsv.s * 1.25), v: hsv.v * 0.8 };
        var darkerColorHex = exports.HSVToHex(darkerColorHSV.h, darkerColorHSV.s, darkerColorHSV.v);
        var lighterColorHex = exports.HSVToHex(lighterColorHSV.h, lighterColorHSV.s, lighterColorHSV.v);
        c = {
          background: color,
          border: darkerColorHex,
          highlight: {
            background: lighterColorHex,
            border: darkerColorHex
          },
          hover: {
            background: lighterColorHex,
            border: darkerColorHex
          }
        };
      } else {
        c = {
          background: color,
          border: color,
          highlight: {
            background: color,
            border: color
          },
          hover: {
            background: color,
            border: color
          }
        };
      }
    } else {
      c = {};
      c.background = color.background || undefined;
      c.border = color.border || undefined;

      if (exports.isString(color.highlight)) {
        c.highlight = {
          border: color.highlight,
          background: color.highlight
        };
      } else {
        c.highlight = {};
        c.highlight.background = color.highlight && color.highlight.background || undefined;
        c.highlight.border = color.highlight && color.highlight.border || undefined;
      }

      if (exports.isString(color.hover)) {
        c.hover = {
          border: color.hover,
          background: color.hover
        };
      } else {
        c.hover = {};
        c.hover.background = color.hover && color.hover.background || undefined;
        c.hover.border = color.hover && color.hover.border || undefined;
      }
    }

    return c;
  };

  /**
   * http://www.javascripter.net/faq/rgb2hsv.htm
   *
   * @param red
   * @param green
   * @param blue
   * @returns {*}
   * @constructor
   */
  exports.RGBToHSV = function (red, green, blue) {
    red = red / 255;green = green / 255;blue = blue / 255;
    var minRGB = Math.min(red, Math.min(green, blue));
    var maxRGB = Math.max(red, Math.max(green, blue));

    // Black-gray-white
    if (minRGB == maxRGB) {
      return { h: 0, s: 0, v: minRGB };
    }

    // Colors other than black-gray-white:
    var d = red == minRGB ? green - blue : blue == minRGB ? red - green : blue - red;
    var h = red == minRGB ? 3 : blue == minRGB ? 1 : 5;
    var hue = 60 * (h - d / (maxRGB - minRGB)) / 360;
    var saturation = (maxRGB - minRGB) / maxRGB;
    var value = maxRGB;
    return { h: hue, s: saturation, v: value };
  };

  var cssUtil = {
    // split a string with css styles into an object with key/values
    split: function split(cssText) {
      var styles = {};

      cssText.split(';').forEach(function (style) {
        if (style.trim() != '') {
          var parts = style.split(':');
          var key = parts[0].trim();
          var value = parts[1].trim();
          styles[key] = value;
        }
      });

      return styles;
    },

    // build a css text string from an object with key/values
    join: function join(styles) {
      return Object.keys(styles).map(function (key) {
        return key + ': ' + styles[key];
      }).join('; ');
    }
  };

  /**
   * Append a string with css styles to an element
   * @param {Element} element
   * @param {String} cssText
   */
  exports.addCssText = function (element, cssText) {
    var currentStyles = cssUtil.split(element.style.cssText);
    var newStyles = cssUtil.split(cssText);
    var styles = exports.extend(currentStyles, newStyles);

    element.style.cssText = cssUtil.join(styles);
  };

  /**
   * Remove a string with css styles from an element
   * @param {Element} element
   * @param {String} cssText
   */
  exports.removeCssText = function (element, cssText) {
    var styles = cssUtil.split(element.style.cssText);
    var removeStyles = cssUtil.split(cssText);

    for (var key in removeStyles) {
      if (removeStyles.hasOwnProperty(key)) {
        delete styles[key];
      }
    }

    element.style.cssText = cssUtil.join(styles);
  };

  /**
   * https://gist.github.com/mjijackson/5311256
   * @param h
   * @param s
   * @param v
   * @returns {{r: number, g: number, b: number}}
   * @constructor
   */
  exports.HSVToRGB = function (h, s, v) {
    var r, g, b;

    var i = Math.floor(h * 6);
    var f = h * 6 - i;
    var p = v * (1 - s);
    var q = v * (1 - f * s);
    var t = v * (1 - (1 - f) * s);

    switch (i % 6) {
      case 0:
        r = v, g = t, b = p;break;
      case 1:
        r = q, g = v, b = p;break;
      case 2:
        r = p, g = v, b = t;break;
      case 3:
        r = p, g = q, b = v;break;
      case 4:
        r = t, g = p, b = v;break;
      case 5:
        r = v, g = p, b = q;break;
    }

    return { r: Math.floor(r * 255), g: Math.floor(g * 255), b: Math.floor(b * 255) };
  };

  exports.HSVToHex = function (h, s, v) {
    var rgb = exports.HSVToRGB(h, s, v);
    return exports.RGBToHex(rgb.r, rgb.g, rgb.b);
  };

  exports.hexToHSV = function (hex) {
    var rgb = exports.hexToRGB(hex);
    return exports.RGBToHSV(rgb.r, rgb.g, rgb.b);
  };

  exports.isValidHex = function (hex) {
    var isOk = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(hex);
    return isOk;
  };

  exports.isValidRGB = function (rgb) {
    rgb = rgb.replace(" ", "");
    var isOk = /rgb\((\d{1,3}),(\d{1,3}),(\d{1,3})\)/i.test(rgb);
    return isOk;
  };
  exports.isValidRGBA = function (rgba) {
    rgba = rgba.replace(" ", "");
    var isOk = /rgba\((\d{1,3}),(\d{1,3}),(\d{1,3}),(.{1,3})\)/i.test(rgba);
    return isOk;
  };

  /**
   * This recursively redirects the prototype of JSON objects to the referenceObject
   * This is used for default options.
   *
   * @param referenceObject
   * @returns {*}
   */
  exports.selectiveBridgeObject = function (fields, referenceObject) {
    if (typeof referenceObject == "object") {
      var objectTo = Object.create(referenceObject);
      for (var i = 0; i < fields.length; i++) {
        if (referenceObject.hasOwnProperty(fields[i])) {
          if (typeof referenceObject[fields[i]] == "object") {
            objectTo[fields[i]] = exports.bridgeObject(referenceObject[fields[i]]);
          }
        }
      }
      return objectTo;
    } else {
      return null;
    }
  };

  /**
   * This recursively redirects the prototype of JSON objects to the referenceObject
   * This is used for default options.
   *
   * @param referenceObject
   * @returns {*}
   */
  exports.bridgeObject = function (referenceObject) {
    if (typeof referenceObject == "object") {
      var objectTo = Object.create(referenceObject);
      for (var i in referenceObject) {
        if (referenceObject.hasOwnProperty(i)) {
          if (typeof referenceObject[i] == "object") {
            objectTo[i] = exports.bridgeObject(referenceObject[i]);
          }
        }
      }
      return objectTo;
    } else {
      return null;
    }
  };

  /**
   * This method provides a stable sort implementation, very fast for presorted data
   *
   * @param a the array
   * @param a order comparator
   * @returns {the array}
   */
  exports.insertSort = function (a, compare) {
    for (var i = 0; i < a.length; i++) {
      var k = a[i];
      for (var j = i; j > 0 && compare(k, a[j - 1]) < 0; j--) {
        a[j] = a[j - 1];
      }
      a[j] = k;
    }
    return a;
  };

  /**
   * this is used to set the options of subobjects in the options object. A requirement of these subobjects
   * is that they have an 'enabled' element which is optional for the user but mandatory for the program.
   *
   * @param [object] mergeTarget | this is either this.options or the options used for the groups.
   * @param [object] options     | options
   * @param [String] option      | this is the option key in the options argument
   */
  exports.mergeOptions = function (mergeTarget, options, option) {
    var allowDeletion = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];
    var globalOptions = arguments.length <= 4 || arguments[4] === undefined ? {} : arguments[4];

    if (options[option] === null) {
      mergeTarget[option] = Object.create(globalOptions[option]);
    } else {
      if (options[option] !== undefined) {
        if (typeof options[option] === 'boolean') {
          mergeTarget[option].enabled = options[option];
        } else {
          if (options[option].enabled === undefined) {
            mergeTarget[option].enabled = true;
          }
          for (var prop in options[option]) {
            if (options[option].hasOwnProperty(prop)) {
              mergeTarget[option][prop] = options[option][prop];
            }
          }
        }
      }
    }
  };

  /**
   * This function does a binary search for a visible item in a sorted list. If we find a visible item, the code that uses
   * this function will then iterate in both directions over this sorted list to find all visible items.
   *
   * @param {Item[]} orderedItems       | Items ordered by start
   * @param {function} comparator       | -1 is lower, 0 is equal, 1 is higher
   * @param {String} field
   * @param {String} field2
   * @returns {number}
   * @private
   */
  exports.binarySearchCustom = function (orderedItems, comparator, field, field2) {
    var maxIterations = 10000;
    var iteration = 0;
    var low = 0;
    var high = orderedItems.length - 1;

    while (low <= high && iteration < maxIterations) {
      var middle = Math.floor((low + high) / 2);

      var item = orderedItems[middle];
      var value = field2 === undefined ? item[field] : item[field][field2];

      var searchResult = comparator(value);
      if (searchResult == 0) {
        // jihaa, found a visible item!
        return middle;
      } else if (searchResult == -1) {
        // it is too small --> increase low
        low = middle + 1;
      } else {
        // it is too big --> decrease high
        high = middle - 1;
      }

      iteration++;
    }

    return -1;
  };

  /**
   * This function does a binary search for a specific value in a sorted array. If it does not exist but is in between of
   * two values, we return either the one before or the one after, depending on user input
   * If it is found, we return the index, else -1.
   *
   * @param {Array} orderedItems
   * @param {{start: number, end: number}} target
   * @param {String} field
   * @param {String} sidePreference   'before' or 'after'
   * @param {function} comparator an optional comparator, returning -1,0,1 for <,==,>.
   * @returns {number}
   * @private
   */
  exports.binarySearchValue = function (orderedItems, target, field, sidePreference, comparator) {
    var maxIterations = 10000;
    var iteration = 0;
    var low = 0;
    var high = orderedItems.length - 1;
    var prevValue, value, nextValue, middle;

    var comparator = comparator != undefined ? comparator : function (a, b) {
      return a == b ? 0 : a < b ? -1 : 1;
    };

    while (low <= high && iteration < maxIterations) {
      // get a new guess
      middle = Math.floor(0.5 * (high + low));
      prevValue = orderedItems[Math.max(0, middle - 1)][field];
      value = orderedItems[middle][field];
      nextValue = orderedItems[Math.min(orderedItems.length - 1, middle + 1)][field];

      if (comparator(value, target) == 0) {
        // we found the target
        return middle;
      } else if (comparator(prevValue, target) < 0 && comparator(value, target) > 0) {
        // target is in between of the previous and the current
        return sidePreference == 'before' ? Math.max(0, middle - 1) : middle;
      } else if (comparator(value, target) < 0 && comparator(nextValue, target) > 0) {
        // target is in between of the current and the next
        return sidePreference == 'before' ? middle : Math.min(orderedItems.length - 1, middle + 1);
      } else {
        // didnt find the target, we need to change our boundaries.
        if (comparator(value, target) < 0) {
          // it is too small --> increase low
          low = middle + 1;
        } else {
          // it is too big --> decrease high
          high = middle - 1;
        }
      }
      iteration++;
    }

    // didnt find anything. Return -1.
    return -1;
  };

  /*
   * Easing Functions - inspired from http://gizma.com/easing/
   * only considering the t value for the range [0, 1] => [0, 1]
   * https://gist.github.com/gre/1650294
   */
  exports.easingFunctions = {
    // no easing, no acceleration
    linear: function linear(t) {
      return t;
    },
    // accelerating from zero velocity
    easeInQuad: function easeInQuad(t) {
      return t * t;
    },
    // decelerating to zero velocity
    easeOutQuad: function easeOutQuad(t) {
      return t * (2 - t);
    },
    // acceleration until halfway, then deceleration
    easeInOutQuad: function easeInOutQuad(t) {
      return t < .5 ? 2 * t * t : -1 + (4 - 2 * t) * t;
    },
    // accelerating from zero velocity
    easeInCubic: function easeInCubic(t) {
      return t * t * t;
    },
    // decelerating to zero velocity
    easeOutCubic: function easeOutCubic(t) {
      return --t * t * t + 1;
    },
    // acceleration until halfway, then deceleration
    easeInOutCubic: function easeInOutCubic(t) {
      return t < .5 ? 4 * t * t * t : (t - 1) * (2 * t - 2) * (2 * t - 2) + 1;
    },
    // accelerating from zero velocity
    easeInQuart: function easeInQuart(t) {
      return t * t * t * t;
    },
    // decelerating to zero velocity
    easeOutQuart: function easeOutQuart(t) {
      return 1 - --t * t * t * t;
    },
    // acceleration until halfway, then deceleration
    easeInOutQuart: function easeInOutQuart(t) {
      return t < .5 ? 8 * t * t * t * t : 1 - 8 * --t * t * t * t;
    },
    // accelerating from zero velocity
    easeInQuint: function easeInQuint(t) {
      return t * t * t * t * t;
    },
    // decelerating to zero velocity
    easeOutQuint: function easeOutQuint(t) {
      return 1 + --t * t * t * t * t;
    },
    // acceleration until halfway, then deceleration
    easeInOutQuint: function easeInOutQuint(t) {
      return t < .5 ? 16 * t * t * t * t * t : 1 + 16 * --t * t * t * t * t;
    }
  };

/***/ },
/* 2 */
/***/ function(module, exports, __webpack_require__) {

  // first check if moment.js is already loaded in the browser window, if so,
  // use this instance. Else, load via commonjs.
  'use strict';

  module.exports = typeof window !== 'undefined' && window['moment'] || __webpack_require__(3);

/***/ },
/* 3 */
/***/ function(module, exports, __webpack_require__) {

  /* WEBPACK VAR INJECTION */(function(module) {//! moment.js
  //! version : 2.11.2
  //! authors : Tim Wood, Iskren Chernev, Moment.js contributors
  //! license : MIT
  //! momentjs.com

  ;(function (global, factory) {
       true ? module.exports = factory() :
      typeof define === 'function' && define.amd ? define(factory) :
      global.moment = factory()
  }(this, function () { 'use strict';

      var hookCallback;

      function utils_hooks__hooks () {
          return hookCallback.apply(null, arguments);
      }

      // This is done to register the method called with moment()
      // without creating circular dependencies.
      function setHookCallback (callback) {
          hookCallback = callback;
      }

      function isArray(input) {
          return Object.prototype.toString.call(input) === '[object Array]';
      }

      function isDate(input) {
          return input instanceof Date || Object.prototype.toString.call(input) === '[object Date]';
      }

      function map(arr, fn) {
          var res = [], i;
          for (i = 0; i < arr.length; ++i) {
              res.push(fn(arr[i], i));
          }
          return res;
      }

      function hasOwnProp(a, b) {
          return Object.prototype.hasOwnProperty.call(a, b);
      }

      function extend(a, b) {
          for (var i in b) {
              if (hasOwnProp(b, i)) {
                  a[i] = b[i];
              }
          }

          if (hasOwnProp(b, 'toString')) {
              a.toString = b.toString;
          }

          if (hasOwnProp(b, 'valueOf')) {
              a.valueOf = b.valueOf;
          }

          return a;
      }

      function create_utc__createUTC (input, format, locale, strict) {
          return createLocalOrUTC(input, format, locale, strict, true).utc();
      }

      function defaultParsingFlags() {
          // We need to deep clone this object.
          return {
              empty           : false,
              unusedTokens    : [],
              unusedInput     : [],
              overflow        : -2,
              charsLeftOver   : 0,
              nullInput       : false,
              invalidMonth    : null,
              invalidFormat   : false,
              userInvalidated : false,
              iso             : false
          };
      }

      function getParsingFlags(m) {
          if (m._pf == null) {
              m._pf = defaultParsingFlags();
          }
          return m._pf;
      }

      function valid__isValid(m) {
          if (m._isValid == null) {
              var flags = getParsingFlags(m);
              m._isValid = !isNaN(m._d.getTime()) &&
                  flags.overflow < 0 &&
                  !flags.empty &&
                  !flags.invalidMonth &&
                  !flags.invalidWeekday &&
                  !flags.nullInput &&
                  !flags.invalidFormat &&
                  !flags.userInvalidated;

              if (m._strict) {
                  m._isValid = m._isValid &&
                      flags.charsLeftOver === 0 &&
                      flags.unusedTokens.length === 0 &&
                      flags.bigHour === undefined;
              }
          }
          return m._isValid;
      }

      function valid__createInvalid (flags) {
          var m = create_utc__createUTC(NaN);
          if (flags != null) {
              extend(getParsingFlags(m), flags);
          }
          else {
              getParsingFlags(m).userInvalidated = true;
          }

          return m;
      }

      function isUndefined(input) {
          return input === void 0;
      }

      // Plugins that add properties should also add the key here (null value),
      // so we can properly clone ourselves.
      var momentProperties = utils_hooks__hooks.momentProperties = [];

      function copyConfig(to, from) {
          var i, prop, val;

          if (!isUndefined(from._isAMomentObject)) {
              to._isAMomentObject = from._isAMomentObject;
          }
          if (!isUndefined(from._i)) {
              to._i = from._i;
          }
          if (!isUndefined(from._f)) {
              to._f = from._f;
          }
          if (!isUndefined(from._l)) {
              to._l = from._l;
          }
          if (!isUndefined(from._strict)) {
              to._strict = from._strict;
          }
          if (!isUndefined(from._tzm)) {
              to._tzm = from._tzm;
          }
          if (!isUndefined(from._isUTC)) {
              to._isUTC = from._isUTC;
          }
          if (!isUndefined(from._offset)) {
              to._offset = from._offset;
          }
          if (!isUndefined(from._pf)) {
              to._pf = getParsingFlags(from);
          }
          if (!isUndefined(from._locale)) {
              to._locale = from._locale;
          }

          if (momentProperties.length > 0) {
              for (i in momentProperties) {
                  prop = momentProperties[i];
                  val = from[prop];
                  if (!isUndefined(val)) {
                      to[prop] = val;
                  }
              }
          }

          return to;
      }

      var updateInProgress = false;

      // Moment prototype object
      function Moment(config) {
          copyConfig(this, config);
          this._d = new Date(config._d != null ? config._d.getTime() : NaN);
          // Prevent infinite loop in case updateOffset creates new moment
          // objects.
          if (updateInProgress === false) {
              updateInProgress = true;
              utils_hooks__hooks.updateOffset(this);
              updateInProgress = false;
          }
      }

      function isMoment (obj) {
          return obj instanceof Moment || (obj != null && obj._isAMomentObject != null);
      }

      function absFloor (number) {
          if (number < 0) {
              return Math.ceil(number);
          } else {
              return Math.floor(number);
          }
      }

      function toInt(argumentForCoercion) {
          var coercedNumber = +argumentForCoercion,
              value = 0;

          if (coercedNumber !== 0 && isFinite(coercedNumber)) {
              value = absFloor(coercedNumber);
          }

          return value;
      }

      // compare two arrays, return the number of differences
      function compareArrays(array1, array2, dontConvert) {
          var len = Math.min(array1.length, array2.length),
              lengthDiff = Math.abs(array1.length - array2.length),
              diffs = 0,
              i;
          for (i = 0; i < len; i++) {
              if ((dontConvert && array1[i] !== array2[i]) ||
                  (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
                  diffs++;
              }
          }
          return diffs + lengthDiff;
      }

      function Locale() {
      }

      // internal storage for locale config files
      var locales = {};
      var globalLocale;

      function normalizeLocale(key) {
          return key ? key.toLowerCase().replace('_', '-') : key;
      }

      // pick the locale from the array
      // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
      // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
      function chooseLocale(names) {
          var i = 0, j, next, locale, split;

          while (i < names.length) {
              split = normalizeLocale(names[i]).split('-');
              j = split.length;
              next = normalizeLocale(names[i + 1]);
              next = next ? next.split('-') : null;
              while (j > 0) {
                  locale = loadLocale(split.slice(0, j).join('-'));
                  if (locale) {
                      return locale;
                  }
                  if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
                      //the next array item is better than a shallower substring of this one
                      break;
                  }
                  j--;
              }
              i++;
          }
          return null;
      }

      function loadLocale(name) {
          var oldLocale = null;
          // TODO: Find a better way to register and load all the locales in Node
          if (!locales[name] && (typeof module !== 'undefined') &&
                  module && module.exports) {
              try {
                  oldLocale = globalLocale._abbr;
                  !(function webpackMissingModule() { var e = new Error("Cannot find module \"./locale\""); e.code = 'MODULE_NOT_FOUND'; throw e; }());
                  // because defineLocale currently also sets the global locale, we
                  // want to undo that for lazy loaded locales
                  locale_locales__getSetGlobalLocale(oldLocale);
              } catch (e) { }
          }
          return locales[name];
      }

      // This function will load locale and then set the global locale.  If
      // no arguments are passed in, it will simply return the current global
      // locale key.
      function locale_locales__getSetGlobalLocale (key, values) {
          var data;
          if (key) {
              if (isUndefined(values)) {
                  data = locale_locales__getLocale(key);
              }
              else {
                  data = defineLocale(key, values);
              }

              if (data) {
                  // moment.duration._locale = moment._locale = data;
                  globalLocale = data;
              }
          }

          return globalLocale._abbr;
      }

      function defineLocale (name, values) {
          if (values !== null) {
              values.abbr = name;
              locales[name] = locales[name] || new Locale();
              locales[name].set(values);

              // backwards compat for now: also set the locale
              locale_locales__getSetGlobalLocale(name);

              return locales[name];
          } else {
              // useful for testing
              delete locales[name];
              return null;
          }
      }

      // returns locale data
      function locale_locales__getLocale (key) {
          var locale;

          if (key && key._locale && key._locale._abbr) {
              key = key._locale._abbr;
          }

          if (!key) {
              return globalLocale;
          }

          if (!isArray(key)) {
              //short-circuit everything else
              locale = loadLocale(key);
              if (locale) {
                  return locale;
              }
              key = [key];
          }

          return chooseLocale(key);
      }

      var aliases = {};

      function addUnitAlias (unit, shorthand) {
          var lowerCase = unit.toLowerCase();
          aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
      }

      function normalizeUnits(units) {
          return typeof units === 'string' ? aliases[units] || aliases[units.toLowerCase()] : undefined;
      }

      function normalizeObjectUnits(inputObject) {
          var normalizedInput = {},
              normalizedProp,
              prop;

          for (prop in inputObject) {
              if (hasOwnProp(inputObject, prop)) {
                  normalizedProp = normalizeUnits(prop);
                  if (normalizedProp) {
                      normalizedInput[normalizedProp] = inputObject[prop];
                  }
              }
          }

          return normalizedInput;
      }

      function isFunction(input) {
          return input instanceof Function || Object.prototype.toString.call(input) === '[object Function]';
      }

      function makeGetSet (unit, keepTime) {
          return function (value) {
              if (value != null) {
                  get_set__set(this, unit, value);
                  utils_hooks__hooks.updateOffset(this, keepTime);
                  return this;
              } else {
                  return get_set__get(this, unit);
              }
          };
      }

      function get_set__get (mom, unit) {
          return mom.isValid() ?
              mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]() : NaN;
      }

      function get_set__set (mom, unit, value) {
          if (mom.isValid()) {
              mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
          }
      }

      // MOMENTS

      function getSet (units, value) {
          var unit;
          if (typeof units === 'object') {
              for (unit in units) {
                  this.set(unit, units[unit]);
              }
          } else {
              units = normalizeUnits(units);
              if (isFunction(this[units])) {
                  return this[units](value);
              }
          }
          return this;
      }

      function zeroFill(number, targetLength, forceSign) {
          var absNumber = '' + Math.abs(number),
              zerosToFill = targetLength - absNumber.length,
              sign = number >= 0;
          return (sign ? (forceSign ? '+' : '') : '-') +
              Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) + absNumber;
      }

      var formattingTokens = /(\[[^\[]*\])|(\\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Qo?|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g;

      var localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g;

      var formatFunctions = {};

      var formatTokenFunctions = {};

      // token:    'M'
      // padded:   ['MM', 2]
      // ordinal:  'Mo'
      // callback: function () { this.month() + 1 }
      function addFormatToken (token, padded, ordinal, callback) {
          var func = callback;
          if (typeof callback === 'string') {
              func = function () {
                  return this[callback]();
              };
          }
          if (token) {
              formatTokenFunctions[token] = func;
          }
          if (padded) {
              formatTokenFunctions[padded[0]] = function () {
                  return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
              };
          }
          if (ordinal) {
              formatTokenFunctions[ordinal] = function () {
                  return this.localeData().ordinal(func.apply(this, arguments), token);
              };
          }
      }

      function removeFormattingTokens(input) {
          if (input.match(/\[[\s\S]/)) {
              return input.replace(/^\[|\]$/g, '');
          }
          return input.replace(/\\/g, '');
      }

      function makeFormatFunction(format) {
          var array = format.match(formattingTokens), i, length;

          for (i = 0, length = array.length; i < length; i++) {
              if (formatTokenFunctions[array[i]]) {
                  array[i] = formatTokenFunctions[array[i]];
              } else {
                  array[i] = removeFormattingTokens(array[i]);
              }
          }

          return function (mom) {
              var output = '';
              for (i = 0; i < length; i++) {
                  output += array[i] instanceof Function ? array[i].call(mom, format) : array[i];
              }
              return output;
          };
      }

      // format date using native date object
      function formatMoment(m, format) {
          if (!m.isValid()) {
              return m.localeData().invalidDate();
          }

          format = expandFormat(format, m.localeData());
          formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format);

          return formatFunctions[format](m);
      }

      function expandFormat(format, locale) {
          var i = 5;

          function replaceLongDateFormatTokens(input) {
              return locale.longDateFormat(input) || input;
          }

          localFormattingTokens.lastIndex = 0;
          while (i >= 0 && localFormattingTokens.test(format)) {
              format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
              localFormattingTokens.lastIndex = 0;
              i -= 1;
          }

          return format;
      }

      var match1         = /\d/;            //       0 - 9
      var match2         = /\d\d/;          //      00 - 99
      var match3         = /\d{3}/;         //     000 - 999
      var match4         = /\d{4}/;         //    0000 - 9999
      var match6         = /[+-]?\d{6}/;    // -999999 - 999999
      var match1to2      = /\d\d?/;         //       0 - 99
      var match3to4      = /\d\d\d\d?/;     //     999 - 9999
      var match5to6      = /\d\d\d\d\d\d?/; //   99999 - 999999
      var match1to3      = /\d{1,3}/;       //       0 - 999
      var match1to4      = /\d{1,4}/;       //       0 - 9999
      var match1to6      = /[+-]?\d{1,6}/;  // -999999 - 999999

      var matchUnsigned  = /\d+/;           //       0 - inf
      var matchSigned    = /[+-]?\d+/;      //    -inf - inf

      var matchOffset    = /Z|[+-]\d\d:?\d\d/gi; // +00:00 -00:00 +0000 -0000 or Z
      var matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi; // +00 -00 +00:00 -00:00 +0000 -0000 or Z

      var matchTimestamp = /[+-]?\d+(\.\d{1,3})?/; // 123456789 123456789.123

      // any word (or two) characters or numbers including two/three word month in arabic.
      // includes scottish gaelic two word and hyphenated months
      var matchWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i;


      var regexes = {};

      function addRegexToken (token, regex, strictRegex) {
          regexes[token] = isFunction(regex) ? regex : function (isStrict, localeData) {
              return (isStrict && strictRegex) ? strictRegex : regex;
          };
      }

      function getParseRegexForToken (token, config) {
          if (!hasOwnProp(regexes, token)) {
              return new RegExp(unescapeFormat(token));
          }

          return regexes[token](config._strict, config._locale);
      }

      // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
      function unescapeFormat(s) {
          return regexEscape(s.replace('\\', '').replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
              return p1 || p2 || p3 || p4;
          }));
      }

      function regexEscape(s) {
          return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
      }

      var tokens = {};

      function addParseToken (token, callback) {
          var i, func = callback;
          if (typeof token === 'string') {
              token = [token];
          }
          if (typeof callback === 'number') {
              func = function (input, array) {
                  array[callback] = toInt(input);
              };
          }
          for (i = 0; i < token.length; i++) {
              tokens[token[i]] = func;
          }
      }

      function addWeekParseToken (token, callback) {
          addParseToken(token, function (input, array, config, token) {
              config._w = config._w || {};
              callback(input, config._w, config, token);
          });
      }

      function addTimeToArrayFromToken(token, input, config) {
          if (input != null && hasOwnProp(tokens, token)) {
              tokens[token](input, config._a, config, token);
          }
      }

      var YEAR = 0;
      var MONTH = 1;
      var DATE = 2;
      var HOUR = 3;
      var MINUTE = 4;
      var SECOND = 5;
      var MILLISECOND = 6;
      var WEEK = 7;
      var WEEKDAY = 8;

      function daysInMonth(year, month) {
          return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();
      }

      // FORMATTING

      addFormatToken('M', ['MM', 2], 'Mo', function () {
          return this.month() + 1;
      });

      addFormatToken('MMM', 0, 0, function (format) {
          return this.localeData().monthsShort(this, format);
      });

      addFormatToken('MMMM', 0, 0, function (format) {
          return this.localeData().months(this, format);
      });

      // ALIASES

      addUnitAlias('month', 'M');

      // PARSING

      addRegexToken('M',    match1to2);
      addRegexToken('MM',   match1to2, match2);
      addRegexToken('MMM',  function (isStrict, locale) {
          return locale.monthsShortRegex(isStrict);
      });
      addRegexToken('MMMM', function (isStrict, locale) {
          return locale.monthsRegex(isStrict);
      });

      addParseToken(['M', 'MM'], function (input, array) {
          array[MONTH] = toInt(input) - 1;
      });

      addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
          var month = config._locale.monthsParse(input, token, config._strict);
          // if we didn't find a month name, mark the date as invalid.
          if (month != null) {
              array[MONTH] = month;
          } else {
              getParsingFlags(config).invalidMonth = input;
          }
      });

      // LOCALES

      var MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s+)+MMMM?/;
      var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
      function localeMonths (m, format) {
          return isArray(this._months) ? this._months[m.month()] :
              this._months[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
      }

      var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
      function localeMonthsShort (m, format) {
          return isArray(this._monthsShort) ? this._monthsShort[m.month()] :
              this._monthsShort[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
      }

      function localeMonthsParse (monthName, format, strict) {
          var i, mom, regex;

          if (!this._monthsParse) {
              this._monthsParse = [];
              this._longMonthsParse = [];
              this._shortMonthsParse = [];
          }

          for (i = 0; i < 12; i++) {
              // make the regex if we don't have it already
              mom = create_utc__createUTC([2000, i]);
              if (strict && !this._longMonthsParse[i]) {
                  this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
                  this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
              }
              if (!strict && !this._monthsParse[i]) {
                  regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
                  this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
              }
              // test the regex
              if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
                  return i;
              } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
                  return i;
              } else if (!strict && this._monthsParse[i].test(monthName)) {
                  return i;
              }
          }
      }

      // MOMENTS

      function setMonth (mom, value) {
          var dayOfMonth;

          if (!mom.isValid()) {
              // No op
              return mom;
          }

          // TODO: Move this out of here!
          if (typeof value === 'string') {
              value = mom.localeData().monthsParse(value);
              // TODO: Another silent failure?
              if (typeof value !== 'number') {
                  return mom;
              }
          }

          dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
          mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
          return mom;
      }

      function getSetMonth (value) {
          if (value != null) {
              setMonth(this, value);
              utils_hooks__hooks.updateOffset(this, true);
              return this;
          } else {
              return get_set__get(this, 'Month');
          }
      }

      function getDaysInMonth () {
          return daysInMonth(this.year(), this.month());
      }

      var defaultMonthsShortRegex = matchWord;
      function monthsShortRegex (isStrict) {
          if (this._monthsParseExact) {
              if (!hasOwnProp(this, '_monthsRegex')) {
                  computeMonthsParse.call(this);
              }
              if (isStrict) {
                  return this._monthsShortStrictRegex;
              } else {
                  return this._monthsShortRegex;
              }
          } else {
              return this._monthsShortStrictRegex && isStrict ?
                  this._monthsShortStrictRegex : this._monthsShortRegex;
          }
      }

      var defaultMonthsRegex = matchWord;
      function monthsRegex (isStrict) {
          if (this._monthsParseExact) {
              if (!hasOwnProp(this, '_monthsRegex')) {
                  computeMonthsParse.call(this);
              }
              if (isStrict) {
                  return this._monthsStrictRegex;
              } else {
                  return this._monthsRegex;
              }
          } else {
              return this._monthsStrictRegex && isStrict ?
                  this._monthsStrictRegex : this._monthsRegex;
          }
      }

      function computeMonthsParse () {
          function cmpLenRev(a, b) {
              return b.length - a.length;
          }

          var shortPieces = [], longPieces = [], mixedPieces = [],
              i, mom;
          for (i = 0; i < 12; i++) {
              // make the regex if we don't have it already
              mom = create_utc__createUTC([2000, i]);
              shortPieces.push(this.monthsShort(mom, ''));
              longPieces.push(this.months(mom, ''));
              mixedPieces.push(this.months(mom, ''));
              mixedPieces.push(this.monthsShort(mom, ''));
          }
          // Sorting makes sure if one month (or abbr) is a prefix of another it
          // will match the longer piece.
          shortPieces.sort(cmpLenRev);
          longPieces.sort(cmpLenRev);
          mixedPieces.sort(cmpLenRev);
          for (i = 0; i < 12; i++) {
              shortPieces[i] = regexEscape(shortPieces[i]);
              longPieces[i] = regexEscape(longPieces[i]);
              mixedPieces[i] = regexEscape(mixedPieces[i]);
          }

          this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
          this._monthsShortRegex = this._monthsRegex;
          this._monthsStrictRegex = new RegExp('^(' + longPieces.join('|') + ')$', 'i');
          this._monthsShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')$', 'i');
      }

      function checkOverflow (m) {
          var overflow;
          var a = m._a;

          if (a && getParsingFlags(m).overflow === -2) {
              overflow =
                  a[MONTH]       < 0 || a[MONTH]       > 11  ? MONTH :
                  a[DATE]        < 1 || a[DATE]        > daysInMonth(a[YEAR], a[MONTH]) ? DATE :
                  a[HOUR]        < 0 || a[HOUR]        > 24 || (a[HOUR] === 24 && (a[MINUTE] !== 0 || a[SECOND] !== 0 || a[MILLISECOND] !== 0)) ? HOUR :
                  a[MINUTE]      < 0 || a[MINUTE]      > 59  ? MINUTE :
                  a[SECOND]      < 0 || a[SECOND]      > 59  ? SECOND :
                  a[MILLISECOND] < 0 || a[MILLISECOND] > 999 ? MILLISECOND :
                  -1;

              if (getParsingFlags(m)._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
                  overflow = DATE;
              }
              if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
                  overflow = WEEK;
              }
              if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
                  overflow = WEEKDAY;
              }

              getParsingFlags(m).overflow = overflow;
          }

          return m;
      }

      function warn(msg) {
          if (utils_hooks__hooks.suppressDeprecationWarnings === false &&
                  (typeof console !==  'undefined') && console.warn) {
              console.warn('Deprecation warning: ' + msg);
          }
      }

      function deprecate(msg, fn) {
          var firstTime = true;

          return extend(function () {
              if (firstTime) {
                  warn(msg + '\nArguments: ' + Array.prototype.slice.call(arguments).join(', ') + '\n' + (new Error()).stack);
                  firstTime = false;
              }
              return fn.apply(this, arguments);
          }, fn);
      }

      var deprecations = {};

      function deprecateSimple(name, msg) {
          if (!deprecations[name]) {
              warn(msg);
              deprecations[name] = true;
          }
      }

      utils_hooks__hooks.suppressDeprecationWarnings = false;

      // iso 8601 regex
      // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
      var extendedIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?/;
      var basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?/;

      var tzRegex = /Z|[+-]\d\d(?::?\d\d)?/;

      var isoDates = [
          ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
          ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
          ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
          ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
          ['YYYY-DDD', /\d{4}-\d{3}/],
          ['YYYY-MM', /\d{4}-\d\d/, false],
          ['YYYYYYMMDD', /[+-]\d{10}/],
          ['YYYYMMDD', /\d{8}/],
          // YYYYMM is NOT allowed by the standard
          ['GGGG[W]WWE', /\d{4}W\d{3}/],
          ['GGGG[W]WW', /\d{4}W\d{2}/, false],
          ['YYYYDDD', /\d{7}/]
      ];

      // iso time formats and regexes
      var isoTimes = [
          ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
          ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
          ['HH:mm:ss', /\d\d:\d\d:\d\d/],
          ['HH:mm', /\d\d:\d\d/],
          ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
          ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
          ['HHmmss', /\d\d\d\d\d\d/],
          ['HHmm', /\d\d\d\d/],
          ['HH', /\d\d/]
      ];

      var aspNetJsonRegex = /^\/?Date\((\-?\d+)/i;

      // date from iso format
      function configFromISO(config) {
          var i, l,
              string = config._i,
              match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
              allowTime, dateFormat, timeFormat, tzFormat;

          if (match) {
              getParsingFlags(config).iso = true;

              for (i = 0, l = isoDates.length; i < l; i++) {
                  if (isoDates[i][1].exec(match[1])) {
                      dateFormat = isoDates[i][0];
                      allowTime = isoDates[i][2] !== false;
                      break;
                  }
              }
              if (dateFormat == null) {
                  config._isValid = false;
                  return;
              }
              if (match[3]) {
                  for (i = 0, l = isoTimes.length; i < l; i++) {
                      if (isoTimes[i][1].exec(match[3])) {
                          // match[2] should be 'T' or space
                          timeFormat = (match[2] || ' ') + isoTimes[i][0];
                          break;
                      }
                  }
                  if (timeFormat == null) {
                      config._isValid = false;
                      return;
                  }
              }
              if (!allowTime && timeFormat != null) {
                  config._isValid = false;
                  return;
              }
              if (match[4]) {
                  if (tzRegex.exec(match[4])) {
                      tzFormat = 'Z';
                  } else {
                      config._isValid = false;
                      return;
                  }
              }
              config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
              configFromStringAndFormat(config);
          } else {
              config._isValid = false;
          }
      }

      // date from iso format or fallback
      function configFromString(config) {
          var matched = aspNetJsonRegex.exec(config._i);

          if (matched !== null) {
              config._d = new Date(+matched[1]);
              return;
          }

          configFromISO(config);
          if (config._isValid === false) {
              delete config._isValid;
              utils_hooks__hooks.createFromInputFallback(config);
          }
      }

      utils_hooks__hooks.createFromInputFallback = deprecate(
          'moment construction falls back to js Date. This is ' +
          'discouraged and will be removed in upcoming major ' +
          'release. Please refer to ' +
          'https://github.com/moment/moment/issues/1407 for more info.',
          function (config) {
              config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
          }
      );

      function createDate (y, m, d, h, M, s, ms) {
          //can't just apply() to create a date:
          //http://stackoverflow.com/questions/181348/instantiating-a-javascript-object-by-calling-prototype-constructor-apply
          var date = new Date(y, m, d, h, M, s, ms);

          //the date constructor remaps years 0-99 to 1900-1999
          if (y < 100 && y >= 0 && isFinite(date.getFullYear())) {
              date.setFullYear(y);
          }
          return date;
      }

      function createUTCDate (y) {
          var date = new Date(Date.UTC.apply(null, arguments));

          //the Date.UTC function remaps years 0-99 to 1900-1999
          if (y < 100 && y >= 0 && isFinite(date.getUTCFullYear())) {
              date.setUTCFullYear(y);
          }
          return date;
      }

      // FORMATTING

      addFormatToken('Y', 0, 0, function () {
          var y = this.year();
          return y <= 9999 ? '' + y : '+' + y;
      });

      addFormatToken(0, ['YY', 2], 0, function () {
          return this.year() % 100;
      });

      addFormatToken(0, ['YYYY',   4],       0, 'year');
      addFormatToken(0, ['YYYYY',  5],       0, 'year');
      addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');

      // ALIASES

      addUnitAlias('year', 'y');

      // PARSING

      addRegexToken('Y',      matchSigned);
      addRegexToken('YY',     match1to2, match2);
      addRegexToken('YYYY',   match1to4, match4);
      addRegexToken('YYYYY',  match1to6, match6);
      addRegexToken('YYYYYY', match1to6, match6);

      addParseToken(['YYYYY', 'YYYYYY'], YEAR);
      addParseToken('YYYY', function (input, array) {
          array[YEAR] = input.length === 2 ? utils_hooks__hooks.parseTwoDigitYear(input) : toInt(input);
      });
      addParseToken('YY', function (input, array) {
          array[YEAR] = utils_hooks__hooks.parseTwoDigitYear(input);
      });
      addParseToken('Y', function (input, array) {
          array[YEAR] = parseInt(input, 10);
      });

      // HELPERS

      function daysInYear(year) {
          return isLeapYear(year) ? 366 : 365;
      }

      function isLeapYear(year) {
          return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
      }

      // HOOKS

      utils_hooks__hooks.parseTwoDigitYear = function (input) {
          return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
      };

      // MOMENTS

      var getSetYear = makeGetSet('FullYear', false);

      function getIsLeapYear () {
          return isLeapYear(this.year());
      }

      // start-of-first-week - start-of-year
      function firstWeekOffset(year, dow, doy) {
          var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
              fwd = 7 + dow - doy,
              // first-week day local weekday -- which local weekday is fwd
              fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;

          return -fwdlw + fwd - 1;
      }

      //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
      function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
          var localWeekday = (7 + weekday - dow) % 7,
              weekOffset = firstWeekOffset(year, dow, doy),
              dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
              resYear, resDayOfYear;

          if (dayOfYear <= 0) {
              resYear = year - 1;
              resDayOfYear = daysInYear(resYear) + dayOfYear;
          } else if (dayOfYear > daysInYear(year)) {
              resYear = year + 1;
              resDayOfYear = dayOfYear - daysInYear(year);
          } else {
              resYear = year;
              resDayOfYear = dayOfYear;
          }

          return {
              year: resYear,
              dayOfYear: resDayOfYear
          };
      }

      function weekOfYear(mom, dow, doy) {
          var weekOffset = firstWeekOffset(mom.year(), dow, doy),
              week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
              resWeek, resYear;

          if (week < 1) {
              resYear = mom.year() - 1;
              resWeek = week + weeksInYear(resYear, dow, doy);
          } else if (week > weeksInYear(mom.year(), dow, doy)) {
              resWeek = week - weeksInYear(mom.year(), dow, doy);
              resYear = mom.year() + 1;
          } else {
              resYear = mom.year();
              resWeek = week;
          }

          return {
              week: resWeek,
              year: resYear
          };
      }

      function weeksInYear(year, dow, doy) {
          var weekOffset = firstWeekOffset(year, dow, doy),
              weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
          return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
      }

      // Pick the first defined of two or three arguments.
      function defaults(a, b, c) {
          if (a != null) {
              return a;
          }
          if (b != null) {
              return b;
          }
          return c;
      }

      function currentDateArray(config) {
          // hooks is actually the exported moment object
          var nowValue = new Date(utils_hooks__hooks.now());
          if (config._useUTC) {
              return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
          }
          return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
      }

      // convert an array to a date.
      // the array should mirror the parameters below
      // note: all values past the year are optional and will default to the lowest possible value.
      // [year, month, day , hour, minute, second, millisecond]
      function configFromArray (config) {
          var i, date, input = [], currentDate, yearToUse;

          if (config._d) {
              return;
          }

          currentDate = currentDateArray(config);

          //compute day of the year from weeks and weekdays
          if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
              dayOfYearFromWeekInfo(config);
          }

          //if the day of the year is set, figure out what it is
          if (config._dayOfYear) {
              yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);

              if (config._dayOfYear > daysInYear(yearToUse)) {
                  getParsingFlags(config)._overflowDayOfYear = true;
              }

              date = createUTCDate(yearToUse, 0, config._dayOfYear);
              config._a[MONTH] = date.getUTCMonth();
              config._a[DATE] = date.getUTCDate();
          }

          // Default to current date.
          // * if no year, month, day of month are given, default to today
          // * if day of month is given, default month and year
          // * if month is given, default only year
          // * if year is given, don't default anything
          for (i = 0; i < 3 && config._a[i] == null; ++i) {
              config._a[i] = input[i] = currentDate[i];
          }

          // Zero out whatever was not defaulted, including time
          for (; i < 7; i++) {
              config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
          }

          // Check for 24:00:00.000
          if (config._a[HOUR] === 24 &&
                  config._a[MINUTE] === 0 &&
                  config._a[SECOND] === 0 &&
                  config._a[MILLISECOND] === 0) {
              config._nextDay = true;
              config._a[HOUR] = 0;
          }

          config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
          // Apply timezone offset from input. The actual utcOffset can be changed
          // with parseZone.
          if (config._tzm != null) {
              config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
          }

          if (config._nextDay) {
              config._a[HOUR] = 24;
          }
      }

      function dayOfYearFromWeekInfo(config) {
          var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow;

          w = config._w;
          if (w.GG != null || w.W != null || w.E != null) {
              dow = 1;
              doy = 4;

              // TODO: We need to take the current isoWeekYear, but that depends on
              // how we interpret now (local, utc, fixed offset). So create
              // a now version of current config (take local/utc/offset flags, and
              // create now).
              weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(local__createLocal(), 1, 4).year);
              week = defaults(w.W, 1);
              weekday = defaults(w.E, 1);
              if (weekday < 1 || weekday > 7) {
                  weekdayOverflow = true;
              }
          } else {
              dow = config._locale._week.dow;
              doy = config._locale._week.doy;

              weekYear = defaults(w.gg, config._a[YEAR], weekOfYear(local__createLocal(), dow, doy).year);
              week = defaults(w.w, 1);

              if (w.d != null) {
                  // weekday -- low day numbers are considered next week
                  weekday = w.d;
                  if (weekday < 0 || weekday > 6) {
                      weekdayOverflow = true;
                  }
              } else if (w.e != null) {
                  // local weekday -- counting starts from begining of week
                  weekday = w.e + dow;
                  if (w.e < 0 || w.e > 6) {
                      weekdayOverflow = true;
                  }
              } else {
                  // default to begining of week
                  weekday = dow;
              }
          }
          if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
              getParsingFlags(config)._overflowWeeks = true;
          } else if (weekdayOverflow != null) {
              getParsingFlags(config)._overflowWeekday = true;
          } else {
              temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
              config._a[YEAR] = temp.year;
              config._dayOfYear = temp.dayOfYear;
          }
      }

      // constant that refers to the ISO standard
      utils_hooks__hooks.ISO_8601 = function () {};

      // date from string and format string
      function configFromStringAndFormat(config) {
          // TODO: Move this to another part of the creation flow to prevent circular deps
          if (config._f === utils_hooks__hooks.ISO_8601) {
              configFromISO(config);
              return;
          }

          config._a = [];
          getParsingFlags(config).empty = true;

          // This array is used to make a Date, either with `new Date` or `Date.UTC`
          var string = '' + config._i,
              i, parsedInput, tokens, token, skipped,
              stringLength = string.length,
              totalParsedInputLength = 0;

          tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];

          for (i = 0; i < tokens.length; i++) {
              token = tokens[i];
              parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
              // console.log('token', token, 'parsedInput', parsedInput,
              //         'regex', getParseRegexForToken(token, config));
              if (parsedInput) {
                  skipped = string.substr(0, string.indexOf(parsedInput));
                  if (skipped.length > 0) {
                      getParsingFlags(config).unusedInput.push(skipped);
                  }
                  string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
                  totalParsedInputLength += parsedInput.length;
              }
              // don't parse if it's not a known token
              if (formatTokenFunctions[token]) {
                  if (parsedInput) {
                      getParsingFlags(config).empty = false;
                  }
                  else {
                      getParsingFlags(config).unusedTokens.push(token);
                  }
                  addTimeToArrayFromToken(token, parsedInput, config);
              }
              else if (config._strict && !parsedInput) {
                  getParsingFlags(config).unusedTokens.push(token);
              }
          }

          // add remaining unparsed input length to the string
          getParsingFlags(config).charsLeftOver = stringLength - totalParsedInputLength;
          if (string.length > 0) {
              getParsingFlags(config).unusedInput.push(string);
          }

          // clear _12h flag if hour is <= 12
          if (getParsingFlags(config).bigHour === true &&
                  config._a[HOUR] <= 12 &&
                  config._a[HOUR] > 0) {
              getParsingFlags(config).bigHour = undefined;
          }
          // handle meridiem
          config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR], config._meridiem);

          configFromArray(config);
          checkOverflow(config);
      }


      function meridiemFixWrap (locale, hour, meridiem) {
          var isPm;

          if (meridiem == null) {
              // nothing to do
              return hour;
          }
          if (locale.meridiemHour != null) {
              return locale.meridiemHour(hour, meridiem);
          } else if (locale.isPM != null) {
              // Fallback
              isPm = locale.isPM(meridiem);
              if (isPm && hour < 12) {
                  hour += 12;
              }
              if (!isPm && hour === 12) {
                  hour = 0;
              }
              return hour;
          } else {
              // this is not supposed to happen
              return hour;
          }
      }

      // date from string and array of format strings
      function configFromStringAndArray(config) {
          var tempConfig,
              bestMoment,

              scoreToBeat,
              i,
              currentScore;

          if (config._f.length === 0) {
              getParsingFlags(config).invalidFormat = true;
              config._d = new Date(NaN);
              return;
          }

          for (i = 0; i < config._f.length; i++) {
              currentScore = 0;
              tempConfig = copyConfig({}, config);
              if (config._useUTC != null) {
                  tempConfig._useUTC = config._useUTC;
              }
              tempConfig._f = config._f[i];
              configFromStringAndFormat(tempConfig);

              if (!valid__isValid(tempConfig)) {
                  continue;
              }

              // if there is any input that was not parsed add a penalty for that format
              currentScore += getParsingFlags(tempConfig).charsLeftOver;

              //or tokens
              currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;

              getParsingFlags(tempConfig).score = currentScore;

              if (scoreToBeat == null || currentScore < scoreToBeat) {
                  scoreToBeat = currentScore;
                  bestMoment = tempConfig;
              }
          }

          extend(config, bestMoment || tempConfig);
      }

      function configFromObject(config) {
          if (config._d) {
              return;
          }

          var i = normalizeObjectUnits(config._i);
          config._a = map([i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond], function (obj) {
              return obj && parseInt(obj, 10);
          });

          configFromArray(config);
      }

      function createFromConfig (config) {
          var res = new Moment(checkOverflow(prepareConfig(config)));
          if (res._nextDay) {
              // Adding is smart enough around DST
              res.add(1, 'd');
              res._nextDay = undefined;
          }

          return res;
      }

      function prepareConfig (config) {
          var input = config._i,
              format = config._f;

          config._locale = config._locale || locale_locales__getLocale(config._l);

          if (input === null || (format === undefined && input === '')) {
              return valid__createInvalid({nullInput: true});
          }

          if (typeof input === 'string') {
              config._i = input = config._locale.preparse(input);
          }

          if (isMoment(input)) {
              return new Moment(checkOverflow(input));
          } else if (isArray(format)) {
              configFromStringAndArray(config);
          } else if (format) {
              configFromStringAndFormat(config);
          } else if (isDate(input)) {
              config._d = input;
          } else {
              configFromInput(config);
          }

          if (!valid__isValid(config)) {
              config._d = null;
          }

          return config;
      }

      function configFromInput(config) {
          var input = config._i;
          if (input === undefined) {
              config._d = new Date(utils_hooks__hooks.now());
          } else if (isDate(input)) {
              config._d = new Date(+input);
          } else if (typeof input === 'string') {
              configFromString(config);
          } else if (isArray(input)) {
              config._a = map(input.slice(0), function (obj) {
                  return parseInt(obj, 10);
              });
              configFromArray(config);
          } else if (typeof(input) === 'object') {
              configFromObject(config);
          } else if (typeof(input) === 'number') {
              // from milliseconds
              config._d = new Date(input);
          } else {
              utils_hooks__hooks.createFromInputFallback(config);
          }
      }

      function createLocalOrUTC (input, format, locale, strict, isUTC) {
          var c = {};

          if (typeof(locale) === 'boolean') {
              strict = locale;
              locale = undefined;
          }
          // object construction must be done this way.
          // https://github.com/moment/moment/issues/1423
          c._isAMomentObject = true;
          c._useUTC = c._isUTC = isUTC;
          c._l = locale;
          c._i = input;
          c._f = format;
          c._strict = strict;

          return createFromConfig(c);
      }

      function local__createLocal (input, format, locale, strict) {
          return createLocalOrUTC(input, format, locale, strict, false);
      }

      var prototypeMin = deprecate(
           'moment().min is deprecated, use moment.min instead. https://github.com/moment/moment/issues/1548',
           function () {
               var other = local__createLocal.apply(null, arguments);
               if (this.isValid() && other.isValid()) {
                   return other < this ? this : other;
               } else {
                   return valid__createInvalid();
               }
           }
       );

      var prototypeMax = deprecate(
          'moment().max is deprecated, use moment.max instead. https://github.com/moment/moment/issues/1548',
          function () {
              var other = local__createLocal.apply(null, arguments);
              if (this.isValid() && other.isValid()) {
                  return other > this ? this : other;
              } else {
                  return valid__createInvalid();
              }
          }
      );

      // Pick a moment m from moments so that m[fn](other) is true for all
      // other. This relies on the function fn to be transitive.
      //
      // moments should either be an array of moment objects or an array, whose
      // first element is an array of moment objects.
      function pickBy(fn, moments) {
          var res, i;
          if (moments.length === 1 && isArray(moments[0])) {
              moments = moments[0];
          }
          if (!moments.length) {
              return local__createLocal();
          }
          res = moments[0];
          for (i = 1; i < moments.length; ++i) {
              if (!moments[i].isValid() || moments[i][fn](res)) {
                  res = moments[i];
              }
          }
          return res;
      }

      // TODO: Use [].sort instead?
      function min () {
          var args = [].slice.call(arguments, 0);

          return pickBy('isBefore', args);
      }

      function max () {
          var args = [].slice.call(arguments, 0);

          return pickBy('isAfter', args);
      }

      var now = function () {
          return Date.now ? Date.now() : +(new Date());
      };

      function Duration (duration) {
          var normalizedInput = normalizeObjectUnits(duration),
              years = normalizedInput.year || 0,
              quarters = normalizedInput.quarter || 0,
              months = normalizedInput.month || 0,
              weeks = normalizedInput.week || 0,
              days = normalizedInput.day || 0,
              hours = normalizedInput.hour || 0,
              minutes = normalizedInput.minute || 0,
              seconds = normalizedInput.second || 0,
              milliseconds = normalizedInput.millisecond || 0;

          // representation for dateAddRemove
          this._milliseconds = +milliseconds +
              seconds * 1e3 + // 1000
              minutes * 6e4 + // 1000 * 60
              hours * 36e5; // 1000 * 60 * 60
          // Because of dateAddRemove treats 24 hours as different from a
          // day when working around DST, we need to store them separately
          this._days = +days +
              weeks * 7;
          // It is impossible translate months into days without knowing
          // which months you are are talking about, so we have to store
          // it separately.
          this._months = +months +
              quarters * 3 +
              years * 12;

          this._data = {};

          this._locale = locale_locales__getLocale();

          this._bubble();
      }

      function isDuration (obj) {
          return obj instanceof Duration;
      }

      // FORMATTING

      function offset (token, separator) {
          addFormatToken(token, 0, 0, function () {
              var offset = this.utcOffset();
              var sign = '+';
              if (offset < 0) {
                  offset = -offset;
                  sign = '-';
              }
              return sign + zeroFill(~~(offset / 60), 2) + separator + zeroFill(~~(offset) % 60, 2);
          });
      }

      offset('Z', ':');
      offset('ZZ', '');

      // PARSING

      addRegexToken('Z',  matchShortOffset);
      addRegexToken('ZZ', matchShortOffset);
      addParseToken(['Z', 'ZZ'], function (input, array, config) {
          config._useUTC = true;
          config._tzm = offsetFromString(matchShortOffset, input);
      });

      // HELPERS

      // timezone chunker
      // '+10:00' > ['10',  '00']
      // '-1530'  > ['-15', '30']
      var chunkOffset = /([\+\-]|\d\d)/gi;

      function offsetFromString(matcher, string) {
          var matches = ((string || '').match(matcher) || []);
          var chunk   = matches[matches.length - 1] || [];
          var parts   = (chunk + '').match(chunkOffset) || ['-', 0, 0];
          var minutes = +(parts[1] * 60) + toInt(parts[2]);

          return parts[0] === '+' ? minutes : -minutes;
      }

      // Return a moment from input, that is local/utc/zone equivalent to model.
      function cloneWithOffset(input, model) {
          var res, diff;
          if (model._isUTC) {
              res = model.clone();
              diff = (isMoment(input) || isDate(input) ? +input : +local__createLocal(input)) - (+res);
              // Use low-level api, because this fn is low-level api.
              res._d.setTime(+res._d + diff);
              utils_hooks__hooks.updateOffset(res, false);
              return res;
          } else {
              return local__createLocal(input).local();
          }
      }

      function getDateOffset (m) {
          // On Firefox.24 Date#getTimezoneOffset returns a floating point.
          // https://github.com/moment/moment/pull/1871
          return -Math.round(m._d.getTimezoneOffset() / 15) * 15;
      }

      // HOOKS

      // This function will be called whenever a moment is mutated.
      // It is intended to keep the offset in sync with the timezone.
      utils_hooks__hooks.updateOffset = function () {};

      // MOMENTS

      // keepLocalTime = true means only change the timezone, without
      // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
      // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
      // +0200, so we adjust the time as needed, to be valid.
      //
      // Keeping the time actually adds/subtracts (one hour)
      // from the actual represented time. That is why we call updateOffset
      // a second time. In case it wants us to change the offset again
      // _changeInProgress == true case, then we have to adjust, because
      // there is no such time in the given timezone.
      function getSetOffset (input, keepLocalTime) {
          var offset = this._offset || 0,
              localAdjust;
          if (!this.isValid()) {
              return input != null ? this : NaN;
          }
          if (input != null) {
              if (typeof input === 'string') {
                  input = offsetFromString(matchShortOffset, input);
              } else if (Math.abs(input) < 16) {
                  input = input * 60;
              }
              if (!this._isUTC && keepLocalTime) {
                  localAdjust = getDateOffset(this);
              }
              this._offset = input;
              this._isUTC = true;
              if (localAdjust != null) {
                  this.add(localAdjust, 'm');
              }
              if (offset !== input) {
                  if (!keepLocalTime || this._changeInProgress) {
                      add_subtract__addSubtract(this, create__createDuration(input - offset, 'm'), 1, false);
                  } else if (!this._changeInProgress) {
                      this._changeInProgress = true;
                      utils_hooks__hooks.updateOffset(this, true);
                      this._changeInProgress = null;
                  }
              }
              return this;
          } else {
              return this._isUTC ? offset : getDateOffset(this);
          }
      }

      function getSetZone (input, keepLocalTime) {
          if (input != null) {
              if (typeof input !== 'string') {
                  input = -input;
              }

              this.utcOffset(input, keepLocalTime);

              return this;
          } else {
              return -this.utcOffset();
          }
      }

      function setOffsetToUTC (keepLocalTime) {
          return this.utcOffset(0, keepLocalTime);
      }

      function setOffsetToLocal (keepLocalTime) {
          if (this._isUTC) {
              this.utcOffset(0, keepLocalTime);
              this._isUTC = false;

              if (keepLocalTime) {
                  this.subtract(getDateOffset(this), 'm');
              }
          }
          return this;
      }

      function setOffsetToParsedOffset () {
          if (this._tzm) {
              this.utcOffset(this._tzm);
          } else if (typeof this._i === 'string') {
              this.utcOffset(offsetFromString(matchOffset, this._i));
          }
          return this;
      }

      function hasAlignedHourOffset (input) {
          if (!this.isValid()) {
              return false;
          }
          input = input ? local__createLocal(input).utcOffset() : 0;

          return (this.utcOffset() - input) % 60 === 0;
      }

      function isDaylightSavingTime () {
          return (
              this.utcOffset() > this.clone().month(0).utcOffset() ||
              this.utcOffset() > this.clone().month(5).utcOffset()
          );
      }

      function isDaylightSavingTimeShifted () {
          if (!isUndefined(this._isDSTShifted)) {
              return this._isDSTShifted;
          }

          var c = {};

          copyConfig(c, this);
          c = prepareConfig(c);

          if (c._a) {
              var other = c._isUTC ? create_utc__createUTC(c._a) : local__createLocal(c._a);
              this._isDSTShifted = this.isValid() &&
                  compareArrays(c._a, other.toArray()) > 0;
          } else {
              this._isDSTShifted = false;
          }

          return this._isDSTShifted;
      }

      function isLocal () {
          return this.isValid() ? !this._isUTC : false;
      }

      function isUtcOffset () {
          return this.isValid() ? this._isUTC : false;
      }

      function isUtc () {
          return this.isValid() ? this._isUTC && this._offset === 0 : false;
      }

      // ASP.NET json date format regex
      var aspNetRegex = /^(\-)?(?:(\d*)[. ])?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?\d*)?$/;

      // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
      // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
      var isoRegex = /^(-)?P(?:(?:([0-9,.]*)Y)?(?:([0-9,.]*)M)?(?:([0-9,.]*)D)?(?:T(?:([0-9,.]*)H)?(?:([0-9,.]*)M)?(?:([0-9,.]*)S)?)?|([0-9,.]*)W)$/;

      function create__createDuration (input, key) {
          var duration = input,
              // matching against regexp is expensive, do it on demand
              match = null,
              sign,
              ret,
              diffRes;

          if (isDuration(input)) {
              duration = {
                  ms : input._milliseconds,
                  d  : input._days,
                  M  : input._months
              };
          } else if (typeof input === 'number') {
              duration = {};
              if (key) {
                  duration[key] = input;
              } else {
                  duration.milliseconds = input;
              }
          } else if (!!(match = aspNetRegex.exec(input))) {
              sign = (match[1] === '-') ? -1 : 1;
              duration = {
                  y  : 0,
                  d  : toInt(match[DATE])        * sign,
                  h  : toInt(match[HOUR])        * sign,
                  m  : toInt(match[MINUTE])      * sign,
                  s  : toInt(match[SECOND])      * sign,
                  ms : toInt(match[MILLISECOND]) * sign
              };
          } else if (!!(match = isoRegex.exec(input))) {
              sign = (match[1] === '-') ? -1 : 1;
              duration = {
                  y : parseIso(match[2], sign),
                  M : parseIso(match[3], sign),
                  d : parseIso(match[4], sign),
                  h : parseIso(match[5], sign),
                  m : parseIso(match[6], sign),
                  s : parseIso(match[7], sign),
                  w : parseIso(match[8], sign)
              };
          } else if (duration == null) {// checks for null or undefined
              duration = {};
          } else if (typeof duration === 'object' && ('from' in duration || 'to' in duration)) {
              diffRes = momentsDifference(local__createLocal(duration.from), local__createLocal(duration.to));

              duration = {};
              duration.ms = diffRes.milliseconds;
              duration.M = diffRes.months;
          }

          ret = new Duration(duration);

          if (isDuration(input) && hasOwnProp(input, '_locale')) {
              ret._locale = input._locale;
          }

          return ret;
      }

      create__createDuration.fn = Duration.prototype;

      function parseIso (inp, sign) {
          // We'd normally use ~~inp for this, but unfortunately it also
          // converts floats to ints.
          // inp may be undefined, so careful calling replace on it.
          var res = inp && parseFloat(inp.replace(',', '.'));
          // apply sign while we're at it
          return (isNaN(res) ? 0 : res) * sign;
      }

      function positiveMomentsDifference(base, other) {
          var res = {milliseconds: 0, months: 0};

          res.months = other.month() - base.month() +
              (other.year() - base.year()) * 12;
          if (base.clone().add(res.months, 'M').isAfter(other)) {
              --res.months;
          }

          res.milliseconds = +other - +(base.clone().add(res.months, 'M'));

          return res;
      }

      function momentsDifference(base, other) {
          var res;
          if (!(base.isValid() && other.isValid())) {
              return {milliseconds: 0, months: 0};
          }

          other = cloneWithOffset(other, base);
          if (base.isBefore(other)) {
              res = positiveMomentsDifference(base, other);
          } else {
              res = positiveMomentsDifference(other, base);
              res.milliseconds = -res.milliseconds;
              res.months = -res.months;
          }

          return res;
      }

      // TODO: remove 'name' arg after deprecation is removed
      function createAdder(direction, name) {
          return function (val, period) {
              var dur, tmp;
              //invert the arguments, but complain about it
              if (period !== null && !isNaN(+period)) {
                  deprecateSimple(name, 'moment().' + name  + '(period, number) is deprecated. Please use moment().' + name + '(number, period).');
                  tmp = val; val = period; period = tmp;
              }

              val = typeof val === 'string' ? +val : val;
              dur = create__createDuration(val, period);
              add_subtract__addSubtract(this, dur, direction);
              return this;
          };
      }

      function add_subtract__addSubtract (mom, duration, isAdding, updateOffset) {
          var milliseconds = duration._milliseconds,
              days = duration._days,
              months = duration._months;

          if (!mom.isValid()) {
              // No op
              return;
          }

          updateOffset = updateOffset == null ? true : updateOffset;

          if (milliseconds) {
              mom._d.setTime(+mom._d + milliseconds * isAdding);
          }
          if (days) {
              get_set__set(mom, 'Date', get_set__get(mom, 'Date') + days * isAdding);
          }
          if (months) {
              setMonth(mom, get_set__get(mom, 'Month') + months * isAdding);
          }
          if (updateOffset) {
              utils_hooks__hooks.updateOffset(mom, days || months);
          }
      }

      var add_subtract__add      = createAdder(1, 'add');
      var add_subtract__subtract = createAdder(-1, 'subtract');

      function moment_calendar__calendar (time, formats) {
          // We want to compare the start of today, vs this.
          // Getting start-of-today depends on whether we're local/utc/offset or not.
          var now = time || local__createLocal(),
              sod = cloneWithOffset(now, this).startOf('day'),
              diff = this.diff(sod, 'days', true),
              format = diff < -6 ? 'sameElse' :
                  diff < -1 ? 'lastWeek' :
                  diff < 0 ? 'lastDay' :
                  diff < 1 ? 'sameDay' :
                  diff < 2 ? 'nextDay' :
                  diff < 7 ? 'nextWeek' : 'sameElse';

          var output = formats && (isFunction(formats[format]) ? formats[format]() : formats[format]);

          return this.format(output || this.localeData().calendar(format, this, local__createLocal(now)));
      }

      function clone () {
          return new Moment(this);
      }

      function isAfter (input, units) {
          var localInput = isMoment(input) ? input : local__createLocal(input);
          if (!(this.isValid() && localInput.isValid())) {
              return false;
          }
          units = normalizeUnits(!isUndefined(units) ? units : 'millisecond');
          if (units === 'millisecond') {
              return +this > +localInput;
          } else {
              return +localInput < +this.clone().startOf(units);
          }
      }

      function isBefore (input, units) {
          var localInput = isMoment(input) ? input : local__createLocal(input);
          if (!(this.isValid() && localInput.isValid())) {
              return false;
          }
          units = normalizeUnits(!isUndefined(units) ? units : 'millisecond');
          if (units === 'millisecond') {
              return +this < +localInput;
          } else {
              return +this.clone().endOf(units) < +localInput;
          }
      }

      function isBetween (from, to, units) {
          return this.isAfter(from, units) && this.isBefore(to, units);
      }

      function isSame (input, units) {
          var localInput = isMoment(input) ? input : local__createLocal(input),
              inputMs;
          if (!(this.isValid() && localInput.isValid())) {
              return false;
          }
          units = normalizeUnits(units || 'millisecond');
          if (units === 'millisecond') {
              return +this === +localInput;
          } else {
              inputMs = +localInput;
              return +(this.clone().startOf(units)) <= inputMs && inputMs <= +(this.clone().endOf(units));
          }
      }

      function isSameOrAfter (input, units) {
          return this.isSame(input, units) || this.isAfter(input,units);
      }

      function isSameOrBefore (input, units) {
          return this.isSame(input, units) || this.isBefore(input,units);
      }

      function diff (input, units, asFloat) {
          var that,
              zoneDelta,
              delta, output;

          if (!this.isValid()) {
              return NaN;
          }

          that = cloneWithOffset(input, this);

          if (!that.isValid()) {
              return NaN;
          }

          zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;

          units = normalizeUnits(units);

          if (units === 'year' || units === 'month' || units === 'quarter') {
              output = monthDiff(this, that);
              if (units === 'quarter') {
                  output = output / 3;
              } else if (units === 'year') {
                  output = output / 12;
              }
          } else {
              delta = this - that;
              output = units === 'second' ? delta / 1e3 : // 1000
                  units === 'minute' ? delta / 6e4 : // 1000 * 60
                  units === 'hour' ? delta / 36e5 : // 1000 * 60 * 60
                  units === 'day' ? (delta - zoneDelta) / 864e5 : // 1000 * 60 * 60 * 24, negate dst
                  units === 'week' ? (delta - zoneDelta) / 6048e5 : // 1000 * 60 * 60 * 24 * 7, negate dst
                  delta;
          }
          return asFloat ? output : absFloor(output);
      }

      function monthDiff (a, b) {
          // difference in months
          var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
              // b is in (anchor - 1 month, anchor + 1 month)
              anchor = a.clone().add(wholeMonthDiff, 'months'),
              anchor2, adjust;

          if (b - anchor < 0) {
              anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
              // linear across the month
              adjust = (b - anchor) / (anchor - anchor2);
          } else {
              anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
              // linear across the month
              adjust = (b - anchor) / (anchor2 - anchor);
          }

          return -(wholeMonthDiff + adjust);
      }

      utils_hooks__hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';

      function toString () {
          return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
      }

      function moment_format__toISOString () {
          var m = this.clone().utc();
          if (0 < m.year() && m.year() <= 9999) {
              if (isFunction(Date.prototype.toISOString)) {
                  // native implementation is ~50x faster, use it when we can
                  return this.toDate().toISOString();
              } else {
                  return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
              }
          } else {
              return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
          }
      }

      function format (inputString) {
          var output = formatMoment(this, inputString || utils_hooks__hooks.defaultFormat);
          return this.localeData().postformat(output);
      }

      function from (time, withoutSuffix) {
          if (this.isValid() &&
                  ((isMoment(time) && time.isValid()) ||
                   local__createLocal(time).isValid())) {
              return create__createDuration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
          } else {
              return this.localeData().invalidDate();
          }
      }

      function fromNow (withoutSuffix) {
          return this.from(local__createLocal(), withoutSuffix);
      }

      function to (time, withoutSuffix) {
          if (this.isValid() &&
                  ((isMoment(time) && time.isValid()) ||
                   local__createLocal(time).isValid())) {
              return create__createDuration({from: this, to: time}).locale(this.locale()).humanize(!withoutSuffix);
          } else {
              return this.localeData().invalidDate();
          }
      }

      function toNow (withoutSuffix) {
          return this.to(local__createLocal(), withoutSuffix);
      }

      // If passed a locale key, it will set the locale for this
      // instance.  Otherwise, it will return the locale configuration
      // variables for this instance.
      function locale (key) {
          var newLocaleData;

          if (key === undefined) {
              return this._locale._abbr;
          } else {
              newLocaleData = locale_locales__getLocale(key);
              if (newLocaleData != null) {
                  this._locale = newLocaleData;
              }
              return this;
          }
      }

      var lang = deprecate(
          'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
          function (key) {
              if (key === undefined) {
                  return this.localeData();
              } else {
                  return this.locale(key);
              }
          }
      );

      function localeData () {
          return this._locale;
      }

      function startOf (units) {
          units = normalizeUnits(units);
          // the following switch intentionally omits break keywords
          // to utilize falling through the cases.
          switch (units) {
          case 'year':
              this.month(0);
              /* falls through */
          case 'quarter':
          case 'month':
              this.date(1);
              /* falls through */
          case 'week':
          case 'isoWeek':
          case 'day':
              this.hours(0);
              /* falls through */
          case 'hour':
              this.minutes(0);
              /* falls through */
          case 'minute':
              this.seconds(0);
              /* falls through */
          case 'second':
              this.milliseconds(0);
          }

          // weeks are a special case
          if (units === 'week') {
              this.weekday(0);
          }
          if (units === 'isoWeek') {
              this.isoWeekday(1);
          }

          // quarters are also special
          if (units === 'quarter') {
              this.month(Math.floor(this.month() / 3) * 3);
          }

          return this;
      }

      function endOf (units) {
          units = normalizeUnits(units);
          if (units === undefined || units === 'millisecond') {
              return this;
          }
          return this.startOf(units).add(1, (units === 'isoWeek' ? 'week' : units)).subtract(1, 'ms');
      }

      function to_type__valueOf () {
          return +this._d - ((this._offset || 0) * 60000);
      }

      function unix () {
          return Math.floor(+this / 1000);
      }

      function toDate () {
          return this._offset ? new Date(+this) : this._d;
      }

      function toArray () {
          var m = this;
          return [m.year(), m.month(), m.date(), m.hour(), m.minute(), m.second(), m.millisecond()];
      }

      function toObject () {
          var m = this;
          return {
              years: m.year(),
              months: m.month(),
              date: m.date(),
              hours: m.hours(),
              minutes: m.minutes(),
              seconds: m.seconds(),
              milliseconds: m.milliseconds()
          };
      }

      function toJSON () {
          // JSON.stringify(new Date(NaN)) === 'null'
          return this.isValid() ? this.toISOString() : 'null';
      }

      function moment_valid__isValid () {
          return valid__isValid(this);
      }

      function parsingFlags () {
          return extend({}, getParsingFlags(this));
      }

      function invalidAt () {
          return getParsingFlags(this).overflow;
      }

      function creationData() {
          return {
              input: this._i,
              format: this._f,
              locale: this._locale,
              isUTC: this._isUTC,
              strict: this._strict
          };
      }

      // FORMATTING

      addFormatToken(0, ['gg', 2], 0, function () {
          return this.weekYear() % 100;
      });

      addFormatToken(0, ['GG', 2], 0, function () {
          return this.isoWeekYear() % 100;
      });

      function addWeekYearFormatToken (token, getter) {
          addFormatToken(0, [token, token.length], 0, getter);
      }

      addWeekYearFormatToken('gggg',     'weekYear');
      addWeekYearFormatToken('ggggg',    'weekYear');
      addWeekYearFormatToken('GGGG',  'isoWeekYear');
      addWeekYearFormatToken('GGGGG', 'isoWeekYear');

      // ALIASES

      addUnitAlias('weekYear', 'gg');
      addUnitAlias('isoWeekYear', 'GG');

      // PARSING

      addRegexToken('G',      matchSigned);
      addRegexToken('g',      matchSigned);
      addRegexToken('GG',     match1to2, match2);
      addRegexToken('gg',     match1to2, match2);
      addRegexToken('GGGG',   match1to4, match4);
      addRegexToken('gggg',   match1to4, match4);
      addRegexToken('GGGGG',  match1to6, match6);
      addRegexToken('ggggg',  match1to6, match6);

      addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
          week[token.substr(0, 2)] = toInt(input);
      });

      addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
          week[token] = utils_hooks__hooks.parseTwoDigitYear(input);
      });

      // MOMENTS

      function getSetWeekYear (input) {
          return getSetWeekYearHelper.call(this,
                  input,
                  this.week(),
                  this.weekday(),
                  this.localeData()._week.dow,
                  this.localeData()._week.doy);
      }

      function getSetISOWeekYear (input) {
          return getSetWeekYearHelper.call(this,
                  input, this.isoWeek(), this.isoWeekday(), 1, 4);
      }

      function getISOWeeksInYear () {
          return weeksInYear(this.year(), 1, 4);
      }

      function getWeeksInYear () {
          var weekInfo = this.localeData()._week;
          return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
      }

      function getSetWeekYearHelper(input, week, weekday, dow, doy) {
          var weeksTarget;
          if (input == null) {
              return weekOfYear(this, dow, doy).year;
          } else {
              weeksTarget = weeksInYear(input, dow, doy);
              if (week > weeksTarget) {
                  week = weeksTarget;
              }
              return setWeekAll.call(this, input, week, weekday, dow, doy);
          }
      }

      function setWeekAll(weekYear, week, weekday, dow, doy) {
          var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
              date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);

          // console.log("got", weekYear, week, weekday, "set", date.toISOString());
          this.year(date.getUTCFullYear());
          this.month(date.getUTCMonth());
          this.date(date.getUTCDate());
          return this;
      }

      // FORMATTING

      addFormatToken('Q', 0, 'Qo', 'quarter');

      // ALIASES

      addUnitAlias('quarter', 'Q');

      // PARSING

      addRegexToken('Q', match1);
      addParseToken('Q', function (input, array) {
          array[MONTH] = (toInt(input) - 1) * 3;
      });

      // MOMENTS

      function getSetQuarter (input) {
          return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
      }

      // FORMATTING

      addFormatToken('w', ['ww', 2], 'wo', 'week');
      addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');

      // ALIASES

      addUnitAlias('week', 'w');
      addUnitAlias('isoWeek', 'W');

      // PARSING

      addRegexToken('w',  match1to2);
      addRegexToken('ww', match1to2, match2);
      addRegexToken('W',  match1to2);
      addRegexToken('WW', match1to2, match2);

      addWeekParseToken(['w', 'ww', 'W', 'WW'], function (input, week, config, token) {
          week[token.substr(0, 1)] = toInt(input);
      });

      // HELPERS

      // LOCALES

      function localeWeek (mom) {
          return weekOfYear(mom, this._week.dow, this._week.doy).week;
      }

      var defaultLocaleWeek = {
          dow : 0, // Sunday is the first day of the week.
          doy : 6  // The week that contains Jan 1st is the first week of the year.
      };

      function localeFirstDayOfWeek () {
          return this._week.dow;
      }

      function localeFirstDayOfYear () {
          return this._week.doy;
      }

      // MOMENTS

      function getSetWeek (input) {
          var week = this.localeData().week(this);
          return input == null ? week : this.add((input - week) * 7, 'd');
      }

      function getSetISOWeek (input) {
          var week = weekOfYear(this, 1, 4).week;
          return input == null ? week : this.add((input - week) * 7, 'd');
      }

      // FORMATTING

      addFormatToken('D', ['DD', 2], 'Do', 'date');

      // ALIASES

      addUnitAlias('date', 'D');

      // PARSING

      addRegexToken('D',  match1to2);
      addRegexToken('DD', match1to2, match2);
      addRegexToken('Do', function (isStrict, locale) {
          return isStrict ? locale._ordinalParse : locale._ordinalParseLenient;
      });

      addParseToken(['D', 'DD'], DATE);
      addParseToken('Do', function (input, array) {
          array[DATE] = toInt(input.match(match1to2)[0], 10);
      });

      // MOMENTS

      var getSetDayOfMonth = makeGetSet('Date', true);

      // FORMATTING

      addFormatToken('d', 0, 'do', 'day');

      addFormatToken('dd', 0, 0, function (format) {
          return this.localeData().weekdaysMin(this, format);
      });

      addFormatToken('ddd', 0, 0, function (format) {
          return this.localeData().weekdaysShort(this, format);
      });

      addFormatToken('dddd', 0, 0, function (format) {
          return this.localeData().weekdays(this, format);
      });

      addFormatToken('e', 0, 0, 'weekday');
      addFormatToken('E', 0, 0, 'isoWeekday');

      // ALIASES

      addUnitAlias('day', 'd');
      addUnitAlias('weekday', 'e');
      addUnitAlias('isoWeekday', 'E');

      // PARSING

      addRegexToken('d',    match1to2);
      addRegexToken('e',    match1to2);
      addRegexToken('E',    match1to2);
      addRegexToken('dd',   matchWord);
      addRegexToken('ddd',  matchWord);
      addRegexToken('dddd', matchWord);

      addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
          var weekday = config._locale.weekdaysParse(input, token, config._strict);
          // if we didn't get a weekday name, mark the date as invalid
          if (weekday != null) {
              week.d = weekday;
          } else {
              getParsingFlags(config).invalidWeekday = input;
          }
      });

      addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
          week[token] = toInt(input);
      });

      // HELPERS

      function parseWeekday(input, locale) {
          if (typeof input !== 'string') {
              return input;
          }

          if (!isNaN(input)) {
              return parseInt(input, 10);
          }

          input = locale.weekdaysParse(input);
          if (typeof input === 'number') {
              return input;
          }

          return null;
      }

      // LOCALES

      var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
      function localeWeekdays (m, format) {
          return isArray(this._weekdays) ? this._weekdays[m.day()] :
              this._weekdays[this._weekdays.isFormat.test(format) ? 'format' : 'standalone'][m.day()];
      }

      var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
      function localeWeekdaysShort (m) {
          return this._weekdaysShort[m.day()];
      }

      var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
      function localeWeekdaysMin (m) {
          return this._weekdaysMin[m.day()];
      }

      function localeWeekdaysParse (weekdayName, format, strict) {
          var i, mom, regex;

          if (!this._weekdaysParse) {
              this._weekdaysParse = [];
              this._minWeekdaysParse = [];
              this._shortWeekdaysParse = [];
              this._fullWeekdaysParse = [];
          }

          for (i = 0; i < 7; i++) {
              // make the regex if we don't have it already

              mom = local__createLocal([2000, 1]).day(i);
              if (strict && !this._fullWeekdaysParse[i]) {
                  this._fullWeekdaysParse[i] = new RegExp('^' + this.weekdays(mom, '').replace('.', '\.?') + '$', 'i');
                  this._shortWeekdaysParse[i] = new RegExp('^' + this.weekdaysShort(mom, '').replace('.', '\.?') + '$', 'i');
                  this._minWeekdaysParse[i] = new RegExp('^' + this.weekdaysMin(mom, '').replace('.', '\.?') + '$', 'i');
              }
              if (!this._weekdaysParse[i]) {
                  regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
                  this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
              }
              // test the regex
              if (strict && format === 'dddd' && this._fullWeekdaysParse[i].test(weekdayName)) {
                  return i;
              } else if (strict && format === 'ddd' && this._shortWeekdaysParse[i].test(weekdayName)) {
                  return i;
              } else if (strict && format === 'dd' && this._minWeekdaysParse[i].test(weekdayName)) {
                  return i;
              } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
                  return i;
              }
          }
      }

      // MOMENTS

      function getSetDayOfWeek (input) {
          if (!this.isValid()) {
              return input != null ? this : NaN;
          }
          var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
          if (input != null) {
              input = parseWeekday(input, this.localeData());
              return this.add(input - day, 'd');
          } else {
              return day;
          }
      }

      function getSetLocaleDayOfWeek (input) {
          if (!this.isValid()) {
              return input != null ? this : NaN;
          }
          var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
          return input == null ? weekday : this.add(input - weekday, 'd');
      }

      function getSetISODayOfWeek (input) {
          if (!this.isValid()) {
              return input != null ? this : NaN;
          }
          // behaves the same as moment#day except
          // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
          // as a setter, sunday should belong to the previous week.
          return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
      }

      // FORMATTING

      addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');

      // ALIASES

      addUnitAlias('dayOfYear', 'DDD');

      // PARSING

      addRegexToken('DDD',  match1to3);
      addRegexToken('DDDD', match3);
      addParseToken(['DDD', 'DDDD'], function (input, array, config) {
          config._dayOfYear = toInt(input);
      });

      // HELPERS

      // MOMENTS

      function getSetDayOfYear (input) {
          var dayOfYear = Math.round((this.clone().startOf('day') - this.clone().startOf('year')) / 864e5) + 1;
          return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
      }

      // FORMATTING

      function hFormat() {
          return this.hours() % 12 || 12;
      }

      addFormatToken('H', ['HH', 2], 0, 'hour');
      addFormatToken('h', ['hh', 2], 0, hFormat);

      addFormatToken('hmm', 0, 0, function () {
          return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
      });

      addFormatToken('hmmss', 0, 0, function () {
          return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2) +
              zeroFill(this.seconds(), 2);
      });

      addFormatToken('Hmm', 0, 0, function () {
          return '' + this.hours() + zeroFill(this.minutes(), 2);
      });

      addFormatToken('Hmmss', 0, 0, function () {
          return '' + this.hours() + zeroFill(this.minutes(), 2) +
              zeroFill(this.seconds(), 2);
      });

      function meridiem (token, lowercase) {
          addFormatToken(token, 0, 0, function () {
              return this.localeData().meridiem(this.hours(), this.minutes(), lowercase);
          });
      }

      meridiem('a', true);
      meridiem('A', false);

      // ALIASES

      addUnitAlias('hour', 'h');

      // PARSING

      function matchMeridiem (isStrict, locale) {
          return locale._meridiemParse;
      }

      addRegexToken('a',  matchMeridiem);
      addRegexToken('A',  matchMeridiem);
      addRegexToken('H',  match1to2);
      addRegexToken('h',  match1to2);
      addRegexToken('HH', match1to2, match2);
      addRegexToken('hh', match1to2, match2);

      addRegexToken('hmm', match3to4);
      addRegexToken('hmmss', match5to6);
      addRegexToken('Hmm', match3to4);
      addRegexToken('Hmmss', match5to6);

      addParseToken(['H', 'HH'], HOUR);
      addParseToken(['a', 'A'], function (input, array, config) {
          config._isPm = config._locale.isPM(input);
          config._meridiem = input;
      });
      addParseToken(['h', 'hh'], function (input, array, config) {
          array[HOUR] = toInt(input);
          getParsingFlags(config).bigHour = true;
      });
      addParseToken('hmm', function (input, array, config) {
          var pos = input.length - 2;
          array[HOUR] = toInt(input.substr(0, pos));
          array[MINUTE] = toInt(input.substr(pos));
          getParsingFlags(config).bigHour = true;
      });
      addParseToken('hmmss', function (input, array, config) {
          var pos1 = input.length - 4;
          var pos2 = input.length - 2;
          array[HOUR] = toInt(input.substr(0, pos1));
          array[MINUTE] = toInt(input.substr(pos1, 2));
          array[SECOND] = toInt(input.substr(pos2));
          getParsingFlags(config).bigHour = true;
      });
      addParseToken('Hmm', function (input, array, config) {
          var pos = input.length - 2;
          array[HOUR] = toInt(input.substr(0, pos));
          array[MINUTE] = toInt(input.substr(pos));
      });
      addParseToken('Hmmss', function (input, array, config) {
          var pos1 = input.length - 4;
          var pos2 = input.length - 2;
          array[HOUR] = toInt(input.substr(0, pos1));
          array[MINUTE] = toInt(input.substr(pos1, 2));
          array[SECOND] = toInt(input.substr(pos2));
      });

      // LOCALES

      function localeIsPM (input) {
          // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
          // Using charAt should be more compatible.
          return ((input + '').toLowerCase().charAt(0) === 'p');
      }

      var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i;
      function localeMeridiem (hours, minutes, isLower) {
          if (hours > 11) {
              return isLower ? 'pm' : 'PM';
          } else {
              return isLower ? 'am' : 'AM';
          }
      }


      // MOMENTS

      // Setting the hour should keep the time, because the user explicitly
      // specified which hour he wants. So trying to maintain the same hour (in
      // a new timezone) makes sense. Adding/subtracting hours does not follow
      // this rule.
      var getSetHour = makeGetSet('Hours', true);

      // FORMATTING

      addFormatToken('m', ['mm', 2], 0, 'minute');

      // ALIASES

      addUnitAlias('minute', 'm');

      // PARSING

      addRegexToken('m',  match1to2);
      addRegexToken('mm', match1to2, match2);
      addParseToken(['m', 'mm'], MINUTE);

      // MOMENTS

      var getSetMinute = makeGetSet('Minutes', false);

      // FORMATTING

      addFormatToken('s', ['ss', 2], 0, 'second');

      // ALIASES

      addUnitAlias('second', 's');

      // PARSING

      addRegexToken('s',  match1to2);
      addRegexToken('ss', match1to2, match2);
      addParseToken(['s', 'ss'], SECOND);

      // MOMENTS

      var getSetSecond = makeGetSet('Seconds', false);

      // FORMATTING

      addFormatToken('S', 0, 0, function () {
          return ~~(this.millisecond() / 100);
      });

      addFormatToken(0, ['SS', 2], 0, function () {
          return ~~(this.millisecond() / 10);
      });

      addFormatToken(0, ['SSS', 3], 0, 'millisecond');
      addFormatToken(0, ['SSSS', 4], 0, function () {
          return this.millisecond() * 10;
      });
      addFormatToken(0, ['SSSSS', 5], 0, function () {
          return this.millisecond() * 100;
      });
      addFormatToken(0, ['SSSSSS', 6], 0, function () {
          return this.millisecond() * 1000;
      });
      addFormatToken(0, ['SSSSSSS', 7], 0, function () {
          return this.millisecond() * 10000;
      });
      addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
          return this.millisecond() * 100000;
      });
      addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
          return this.millisecond() * 1000000;
      });


      // ALIASES

      addUnitAlias('millisecond', 'ms');

      // PARSING

      addRegexToken('S',    match1to3, match1);
      addRegexToken('SS',   match1to3, match2);
      addRegexToken('SSS',  match1to3, match3);

      var token;
      for (token = 'SSSS'; token.length <= 9; token += 'S') {
          addRegexToken(token, matchUnsigned);
      }

      function parseMs(input, array) {
          array[MILLISECOND] = toInt(('0.' + input) * 1000);
      }

      for (token = 'S'; token.length <= 9; token += 'S') {
          addParseToken(token, parseMs);
      }
      // MOMENTS

      var getSetMillisecond = makeGetSet('Milliseconds', false);

      // FORMATTING

      addFormatToken('z',  0, 0, 'zoneAbbr');
      addFormatToken('zz', 0, 0, 'zoneName');

      // MOMENTS

      function getZoneAbbr () {
          return this._isUTC ? 'UTC' : '';
      }

      function getZoneName () {
          return this._isUTC ? 'Coordinated Universal Time' : '';
      }

      var momentPrototype__proto = Moment.prototype;

      momentPrototype__proto.add               = add_subtract__add;
      momentPrototype__proto.calendar          = moment_calendar__calendar;
      momentPrototype__proto.clone             = clone;
      momentPrototype__proto.diff              = diff;
      momentPrototype__proto.endOf             = endOf;
      momentPrototype__proto.format            = format;
      momentPrototype__proto.from              = from;
      momentPrototype__proto.fromNow           = fromNow;
      momentPrototype__proto.to                = to;
      momentPrototype__proto.toNow             = toNow;
      momentPrototype__proto.get               = getSet;
      momentPrototype__proto.invalidAt         = invalidAt;
      momentPrototype__proto.isAfter           = isAfter;
      momentPrototype__proto.isBefore          = isBefore;
      momentPrototype__proto.isBetween         = isBetween;
      momentPrototype__proto.isSame            = isSame;
      momentPrototype__proto.isSameOrAfter     = isSameOrAfter;
      momentPrototype__proto.isSameOrBefore    = isSameOrBefore;
      momentPrototype__proto.isValid           = moment_valid__isValid;
      momentPrototype__proto.lang              = lang;
      momentPrototype__proto.locale            = locale;
      momentPrototype__proto.localeData        = localeData;
      momentPrototype__proto.max               = prototypeMax;
      momentPrototype__proto.min               = prototypeMin;
      momentPrototype__proto.parsingFlags      = parsingFlags;
      momentPrototype__proto.set               = getSet;
      momentPrototype__proto.startOf           = startOf;
      momentPrototype__proto.subtract          = add_subtract__subtract;
      momentPrototype__proto.toArray           = toArray;
      momentPrototype__proto.toObject          = toObject;
      momentPrototype__proto.toDate            = toDate;
      momentPrototype__proto.toISOString       = moment_format__toISOString;
      momentPrototype__proto.toJSON            = toJSON;
      momentPrototype__proto.toString          = toString;
      momentPrototype__proto.unix              = unix;
      momentPrototype__proto.valueOf           = to_type__valueOf;
      momentPrototype__proto.creationData      = creationData;

      // Year
      momentPrototype__proto.year       = getSetYear;
      momentPrototype__proto.isLeapYear = getIsLeapYear;

      // Week Year
      momentPrototype__proto.weekYear    = getSetWeekYear;
      momentPrototype__proto.isoWeekYear = getSetISOWeekYear;

      // Quarter
      momentPrototype__proto.quarter = momentPrototype__proto.quarters = getSetQuarter;

      // Month
      momentPrototype__proto.month       = getSetMonth;
      momentPrototype__proto.daysInMonth = getDaysInMonth;

      // Week
      momentPrototype__proto.week           = momentPrototype__proto.weeks        = getSetWeek;
      momentPrototype__proto.isoWeek        = momentPrototype__proto.isoWeeks     = getSetISOWeek;
      momentPrototype__proto.weeksInYear    = getWeeksInYear;
      momentPrototype__proto.isoWeeksInYear = getISOWeeksInYear;

      // Day
      momentPrototype__proto.date       = getSetDayOfMonth;
      momentPrototype__proto.day        = momentPrototype__proto.days             = getSetDayOfWeek;
      momentPrototype__proto.weekday    = getSetLocaleDayOfWeek;
      momentPrototype__proto.isoWeekday = getSetISODayOfWeek;
      momentPrototype__proto.dayOfYear  = getSetDayOfYear;

      // Hour
      momentPrototype__proto.hour = momentPrototype__proto.hours = getSetHour;

      // Minute
      momentPrototype__proto.minute = momentPrototype__proto.minutes = getSetMinute;

      // Second
      momentPrototype__proto.second = momentPrototype__proto.seconds = getSetSecond;

      // Millisecond
      momentPrototype__proto.millisecond = momentPrototype__proto.milliseconds = getSetMillisecond;

      // Offset
      momentPrototype__proto.utcOffset            = getSetOffset;
      momentPrototype__proto.utc                  = setOffsetToUTC;
      momentPrototype__proto.local                = setOffsetToLocal;
      momentPrototype__proto.parseZone            = setOffsetToParsedOffset;
      momentPrototype__proto.hasAlignedHourOffset = hasAlignedHourOffset;
      momentPrototype__proto.isDST                = isDaylightSavingTime;
      momentPrototype__proto.isDSTShifted         = isDaylightSavingTimeShifted;
      momentPrototype__proto.isLocal              = isLocal;
      momentPrototype__proto.isUtcOffset          = isUtcOffset;
      momentPrototype__proto.isUtc                = isUtc;
      momentPrototype__proto.isUTC                = isUtc;

      // Timezone
      momentPrototype__proto.zoneAbbr = getZoneAbbr;
      momentPrototype__proto.zoneName = getZoneName;

      // Deprecations
      momentPrototype__proto.dates  = deprecate('dates accessor is deprecated. Use date instead.', getSetDayOfMonth);
      momentPrototype__proto.months = deprecate('months accessor is deprecated. Use month instead', getSetMonth);
      momentPrototype__proto.years  = deprecate('years accessor is deprecated. Use year instead', getSetYear);
      momentPrototype__proto.zone   = deprecate('moment().zone is deprecated, use moment().utcOffset instead. https://github.com/moment/moment/issues/1779', getSetZone);

      var momentPrototype = momentPrototype__proto;

      function moment__createUnix (input) {
          return local__createLocal(input * 1000);
      }

      function moment__createInZone () {
          return local__createLocal.apply(null, arguments).parseZone();
      }

      var defaultCalendar = {
          sameDay : '[Today at] LT',
          nextDay : '[Tomorrow at] LT',
          nextWeek : 'dddd [at] LT',
          lastDay : '[Yesterday at] LT',
          lastWeek : '[Last] dddd [at] LT',
          sameElse : 'L'
      };

      function locale_calendar__calendar (key, mom, now) {
          var output = this._calendar[key];
          return isFunction(output) ? output.call(mom, now) : output;
      }

      var defaultLongDateFormat = {
          LTS  : 'h:mm:ss A',
          LT   : 'h:mm A',
          L    : 'MM/DD/YYYY',
          LL   : 'MMMM D, YYYY',
          LLL  : 'MMMM D, YYYY h:mm A',
          LLLL : 'dddd, MMMM D, YYYY h:mm A'
      };

      function longDateFormat (key) {
          var format = this._longDateFormat[key],
              formatUpper = this._longDateFormat[key.toUpperCase()];

          if (format || !formatUpper) {
              return format;
          }

          this._longDateFormat[key] = formatUpper.replace(/MMMM|MM|DD|dddd/g, function (val) {
              return val.slice(1);
          });

          return this._longDateFormat[key];
      }

      var defaultInvalidDate = 'Invalid date';

      function invalidDate () {
          return this._invalidDate;
      }

      var defaultOrdinal = '%d';
      var defaultOrdinalParse = /\d{1,2}/;

      function ordinal (number) {
          return this._ordinal.replace('%d', number);
      }

      function preParsePostFormat (string) {
          return string;
      }

      var defaultRelativeTime = {
          future : 'in %s',
          past   : '%s ago',
          s  : 'a few seconds',
          m  : 'a minute',
          mm : '%d minutes',
          h  : 'an hour',
          hh : '%d hours',
          d  : 'a day',
          dd : '%d days',
          M  : 'a month',
          MM : '%d months',
          y  : 'a year',
          yy : '%d years'
      };

      function relative__relativeTime (number, withoutSuffix, string, isFuture) {
          var output = this._relativeTime[string];
          return (isFunction(output)) ?
              output(number, withoutSuffix, string, isFuture) :
              output.replace(/%d/i, number);
      }

      function pastFuture (diff, output) {
          var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
          return isFunction(format) ? format(output) : format.replace(/%s/i, output);
      }

      function locale_set__set (config) {
          var prop, i;
          for (i in config) {
              prop = config[i];
              if (isFunction(prop)) {
                  this[i] = prop;
              } else {
                  this['_' + i] = prop;
              }
          }
          // Lenient ordinal parsing accepts just a number in addition to
          // number + (possibly) stuff coming from _ordinalParseLenient.
          this._ordinalParseLenient = new RegExp(this._ordinalParse.source + '|' + (/\d{1,2}/).source);
      }

      var prototype__proto = Locale.prototype;

      prototype__proto._calendar       = defaultCalendar;
      prototype__proto.calendar        = locale_calendar__calendar;
      prototype__proto._longDateFormat = defaultLongDateFormat;
      prototype__proto.longDateFormat  = longDateFormat;
      prototype__proto._invalidDate    = defaultInvalidDate;
      prototype__proto.invalidDate     = invalidDate;
      prototype__proto._ordinal        = defaultOrdinal;
      prototype__proto.ordinal         = ordinal;
      prototype__proto._ordinalParse   = defaultOrdinalParse;
      prototype__proto.preparse        = preParsePostFormat;
      prototype__proto.postformat      = preParsePostFormat;
      prototype__proto._relativeTime   = defaultRelativeTime;
      prototype__proto.relativeTime    = relative__relativeTime;
      prototype__proto.pastFuture      = pastFuture;
      prototype__proto.set             = locale_set__set;

      // Month
      prototype__proto.months            =        localeMonths;
      prototype__proto._months           = defaultLocaleMonths;
      prototype__proto.monthsShort       =        localeMonthsShort;
      prototype__proto._monthsShort      = defaultLocaleMonthsShort;
      prototype__proto.monthsParse       =        localeMonthsParse;
      prototype__proto._monthsRegex      = defaultMonthsRegex;
      prototype__proto.monthsRegex       = monthsRegex;
      prototype__proto._monthsShortRegex = defaultMonthsShortRegex;
      prototype__proto.monthsShortRegex  = monthsShortRegex;

      // Week
      prototype__proto.week = localeWeek;
      prototype__proto._week = defaultLocaleWeek;
      prototype__proto.firstDayOfYear = localeFirstDayOfYear;
      prototype__proto.firstDayOfWeek = localeFirstDayOfWeek;

      // Day of Week
      prototype__proto.weekdays       =        localeWeekdays;
      prototype__proto._weekdays      = defaultLocaleWeekdays;
      prototype__proto.weekdaysMin    =        localeWeekdaysMin;
      prototype__proto._weekdaysMin   = defaultLocaleWeekdaysMin;
      prototype__proto.weekdaysShort  =        localeWeekdaysShort;
      prototype__proto._weekdaysShort = defaultLocaleWeekdaysShort;
      prototype__proto.weekdaysParse  =        localeWeekdaysParse;

      // Hours
      prototype__proto.isPM = localeIsPM;
      prototype__proto._meridiemParse = defaultLocaleMeridiemParse;
      prototype__proto.meridiem = localeMeridiem;

      function lists__get (format, index, field, setter) {
          var locale = locale_locales__getLocale();
          var utc = create_utc__createUTC().set(setter, index);
          return locale[field](utc, format);
      }

      function list (format, index, field, count, setter) {
          if (typeof format === 'number') {
              index = format;
              format = undefined;
          }

          format = format || '';

          if (index != null) {
              return lists__get(format, index, field, setter);
          }

          var i;
          var out = [];
          for (i = 0; i < count; i++) {
              out[i] = lists__get(format, i, field, setter);
          }
          return out;
      }

      function lists__listMonths (format, index) {
          return list(format, index, 'months', 12, 'month');
      }

      function lists__listMonthsShort (format, index) {
          return list(format, index, 'monthsShort', 12, 'month');
      }

      function lists__listWeekdays (format, index) {
          return list(format, index, 'weekdays', 7, 'day');
      }

      function lists__listWeekdaysShort (format, index) {
          return list(format, index, 'weekdaysShort', 7, 'day');
      }

      function lists__listWeekdaysMin (format, index) {
          return list(format, index, 'weekdaysMin', 7, 'day');
      }

      locale_locales__getSetGlobalLocale('en', {
          ordinalParse: /\d{1,2}(th|st|nd|rd)/,
          ordinal : function (number) {
              var b = number % 10,
                  output = (toInt(number % 100 / 10) === 1) ? 'th' :
                  (b === 1) ? 'st' :
                  (b === 2) ? 'nd' :
                  (b === 3) ? 'rd' : 'th';
              return number + output;
          }
      });

      // Side effect imports
      utils_hooks__hooks.lang = deprecate('moment.lang is deprecated. Use moment.locale instead.', locale_locales__getSetGlobalLocale);
      utils_hooks__hooks.langData = deprecate('moment.langData is deprecated. Use moment.localeData instead.', locale_locales__getLocale);

      var mathAbs = Math.abs;

      function duration_abs__abs () {
          var data           = this._data;

          this._milliseconds = mathAbs(this._milliseconds);
          this._days         = mathAbs(this._days);
          this._months       = mathAbs(this._months);

          data.milliseconds  = mathAbs(data.milliseconds);
          data.seconds       = mathAbs(data.seconds);
          data.minutes       = mathAbs(data.minutes);
          data.hours         = mathAbs(data.hours);
          data.months        = mathAbs(data.months);
          data.years         = mathAbs(data.years);

          return this;
      }

      function duration_add_subtract__addSubtract (duration, input, value, direction) {
          var other = create__createDuration(input, value);

          duration._milliseconds += direction * other._milliseconds;
          duration._days         += direction * other._days;
          duration._months       += direction * other._months;

          return duration._bubble();
      }

      // supports only 2.0-style add(1, 's') or add(duration)
      function duration_add_subtract__add (input, value) {
          return duration_add_subtract__addSubtract(this, input, value, 1);
      }

      // supports only 2.0-style subtract(1, 's') or subtract(duration)
      function duration_add_subtract__subtract (input, value) {
          return duration_add_subtract__addSubtract(this, input, value, -1);
      }

      function absCeil (number) {
          if (number < 0) {
              return Math.floor(number);
          } else {
              return Math.ceil(number);
          }
      }

      function bubble () {
          var milliseconds = this._milliseconds;
          var days         = this._days;
          var months       = this._months;
          var data         = this._data;
          var seconds, minutes, hours, years, monthsFromDays;

          // if we have a mix of positive and negative values, bubble down first
          // check: https://github.com/moment/moment/issues/2166
          if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
                  (milliseconds <= 0 && days <= 0 && months <= 0))) {
              milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
              days = 0;
              months = 0;
          }

          // The following code bubbles up values, see the tests for
          // examples of what that means.
          data.milliseconds = milliseconds % 1000;

          seconds           = absFloor(milliseconds / 1000);
          data.seconds      = seconds % 60;

          minutes           = absFloor(seconds / 60);
          data.minutes      = minutes % 60;

          hours             = absFloor(minutes / 60);
          data.hours        = hours % 24;

          days += absFloor(hours / 24);

          // convert days to months
          monthsFromDays = absFloor(daysToMonths(days));
          months += monthsFromDays;
          days -= absCeil(monthsToDays(monthsFromDays));

          // 12 months -> 1 year
          years = absFloor(months / 12);
          months %= 12;

          data.days   = days;
          data.months = months;
          data.years  = years;

          return this;
      }

      function daysToMonths (days) {
          // 400 years have 146097 days (taking into account leap year rules)
          // 400 years have 12 months === 4800
          return days * 4800 / 146097;
      }

      function monthsToDays (months) {
          // the reverse of daysToMonths
          return months * 146097 / 4800;
      }

      function as (units) {
          var days;
          var months;
          var milliseconds = this._milliseconds;

          units = normalizeUnits(units);

          if (units === 'month' || units === 'year') {
              days   = this._days   + milliseconds / 864e5;
              months = this._months + daysToMonths(days);
              return units === 'month' ? months : months / 12;
          } else {
              // handle milliseconds separately because of floating point math errors (issue #1867)
              days = this._days + Math.round(monthsToDays(this._months));
              switch (units) {
                  case 'week'   : return days / 7     + milliseconds / 6048e5;
                  case 'day'    : return days         + milliseconds / 864e5;
                  case 'hour'   : return days * 24    + milliseconds / 36e5;
                  case 'minute' : return days * 1440  + milliseconds / 6e4;
                  case 'second' : return days * 86400 + milliseconds / 1000;
                  // Math.floor prevents floating point math errors here
                  case 'millisecond': return Math.floor(days * 864e5) + milliseconds;
                  default: throw new Error('Unknown unit ' + units);
              }
          }
      }

      // TODO: Use this.as('ms')?
      function duration_as__valueOf () {
          return (
              this._milliseconds +
              this._days * 864e5 +
              (this._months % 12) * 2592e6 +
              toInt(this._months / 12) * 31536e6
          );
      }

      function makeAs (alias) {
          return function () {
              return this.as(alias);
          };
      }

      var asMilliseconds = makeAs('ms');
      var asSeconds      = makeAs('s');
      var asMinutes      = makeAs('m');
      var asHours        = makeAs('h');
      var asDays         = makeAs('d');
      var asWeeks        = makeAs('w');
      var asMonths       = makeAs('M');
      var asYears        = makeAs('y');

      function duration_get__get (units) {
          units = normalizeUnits(units);
          return this[units + 's']();
      }

      function makeGetter(name) {
          return function () {
              return this._data[name];
          };
      }

      var milliseconds = makeGetter('milliseconds');
      var seconds      = makeGetter('seconds');
      var minutes      = makeGetter('minutes');
      var hours        = makeGetter('hours');
      var days         = makeGetter('days');
      var months       = makeGetter('months');
      var years        = makeGetter('years');

      function weeks () {
          return absFloor(this.days() / 7);
      }

      var round = Math.round;
      var thresholds = {
          s: 45,  // seconds to minute
          m: 45,  // minutes to hour
          h: 22,  // hours to day
          d: 26,  // days to month
          M: 11   // months to year
      };

      // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
      function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
          return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
      }

      function duration_humanize__relativeTime (posNegDuration, withoutSuffix, locale) {
          var duration = create__createDuration(posNegDuration).abs();
          var seconds  = round(duration.as('s'));
          var minutes  = round(duration.as('m'));
          var hours    = round(duration.as('h'));
          var days     = round(duration.as('d'));
          var months   = round(duration.as('M'));
          var years    = round(duration.as('y'));

          var a = seconds < thresholds.s && ['s', seconds]  ||
                  minutes <= 1           && ['m']           ||
                  minutes < thresholds.m && ['mm', minutes] ||
                  hours   <= 1           && ['h']           ||
                  hours   < thresholds.h && ['hh', hours]   ||
                  days    <= 1           && ['d']           ||
                  days    < thresholds.d && ['dd', days]    ||
                  months  <= 1           && ['M']           ||
                  months  < thresholds.M && ['MM', months]  ||
                  years   <= 1           && ['y']           || ['yy', years];

          a[2] = withoutSuffix;
          a[3] = +posNegDuration > 0;
          a[4] = locale;
          return substituteTimeAgo.apply(null, a);
      }

      // This function allows you to set a threshold for relative time strings
      function duration_humanize__getSetRelativeTimeThreshold (threshold, limit) {
          if (thresholds[threshold] === undefined) {
              return false;
          }
          if (limit === undefined) {
              return thresholds[threshold];
          }
          thresholds[threshold] = limit;
          return true;
      }

      function humanize (withSuffix) {
          var locale = this.localeData();
          var output = duration_humanize__relativeTime(this, !withSuffix, locale);

          if (withSuffix) {
              output = locale.pastFuture(+this, output);
          }

          return locale.postformat(output);
      }

      var iso_string__abs = Math.abs;

      function iso_string__toISOString() {
          // for ISO strings we do not use the normal bubbling rules:
          //  * milliseconds bubble up until they become hours
          //  * days do not bubble at all
          //  * months bubble up until they become years
          // This is because there is no context-free conversion between hours and days
          // (think of clock changes)
          // and also not between days and months (28-31 days per month)
          var seconds = iso_string__abs(this._milliseconds) / 1000;
          var days         = iso_string__abs(this._days);
          var months       = iso_string__abs(this._months);
          var minutes, hours, years;

          // 3600 seconds -> 60 minutes -> 1 hour
          minutes           = absFloor(seconds / 60);
          hours             = absFloor(minutes / 60);
          seconds %= 60;
          minutes %= 60;

          // 12 months -> 1 year
          years  = absFloor(months / 12);
          months %= 12;


          // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
          var Y = years;
          var M = months;
          var D = days;
          var h = hours;
          var m = minutes;
          var s = seconds;
          var total = this.asSeconds();

          if (!total) {
              // this is the same as C#'s (Noda) and python (isodate)...
              // but not other JS (goog.date)
              return 'P0D';
          }

          return (total < 0 ? '-' : '') +
              'P' +
              (Y ? Y + 'Y' : '') +
              (M ? M + 'M' : '') +
              (D ? D + 'D' : '') +
              ((h || m || s) ? 'T' : '') +
              (h ? h + 'H' : '') +
              (m ? m + 'M' : '') +
              (s ? s + 'S' : '');
      }

      var duration_prototype__proto = Duration.prototype;

      duration_prototype__proto.abs            = duration_abs__abs;
      duration_prototype__proto.add            = duration_add_subtract__add;
      duration_prototype__proto.subtract       = duration_add_subtract__subtract;
      duration_prototype__proto.as             = as;
      duration_prototype__proto.asMilliseconds = asMilliseconds;
      duration_prototype__proto.asSeconds      = asSeconds;
      duration_prototype__proto.asMinutes      = asMinutes;
      duration_prototype__proto.asHours        = asHours;
      duration_prototype__proto.asDays         = asDays;
      duration_prototype__proto.asWeeks        = asWeeks;
      duration_prototype__proto.asMonths       = asMonths;
      duration_prototype__proto.asYears        = asYears;
      duration_prototype__proto.valueOf        = duration_as__valueOf;
      duration_prototype__proto._bubble        = bubble;
      duration_prototype__proto.get            = duration_get__get;
      duration_prototype__proto.milliseconds   = milliseconds;
      duration_prototype__proto.seconds        = seconds;
      duration_prototype__proto.minutes        = minutes;
      duration_prototype__proto.hours          = hours;
      duration_prototype__proto.days           = days;
      duration_prototype__proto.weeks          = weeks;
      duration_prototype__proto.months         = months;
      duration_prototype__proto.years          = years;
      duration_prototype__proto.humanize       = humanize;
      duration_prototype__proto.toISOString    = iso_string__toISOString;
      duration_prototype__proto.toString       = iso_string__toISOString;
      duration_prototype__proto.toJSON         = iso_string__toISOString;
      duration_prototype__proto.locale         = locale;
      duration_prototype__proto.localeData     = localeData;

      // Deprecations
      duration_prototype__proto.toIsoString = deprecate('toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)', iso_string__toISOString);
      duration_prototype__proto.lang = lang;

      // Side effect imports

      // FORMATTING

      addFormatToken('X', 0, 0, 'unix');
      addFormatToken('x', 0, 0, 'valueOf');

      // PARSING

      addRegexToken('x', matchSigned);
      addRegexToken('X', matchTimestamp);
      addParseToken('X', function (input, array, config) {
          config._d = new Date(parseFloat(input, 10) * 1000);
      });
      addParseToken('x', function (input, array, config) {
          config._d = new Date(toInt(input));
      });

      // Side effect imports


      utils_hooks__hooks.version = '2.11.2';

      setHookCallback(local__createLocal);

      utils_hooks__hooks.fn                    = momentPrototype;
      utils_hooks__hooks.min                   = min;
      utils_hooks__hooks.max                   = max;
      utils_hooks__hooks.now                   = now;
      utils_hooks__hooks.utc                   = create_utc__createUTC;
      utils_hooks__hooks.unix                  = moment__createUnix;
      utils_hooks__hooks.months                = lists__listMonths;
      utils_hooks__hooks.isDate                = isDate;
      utils_hooks__hooks.locale                = locale_locales__getSetGlobalLocale;
      utils_hooks__hooks.invalid               = valid__createInvalid;
      utils_hooks__hooks.duration              = create__createDuration;
      utils_hooks__hooks.isMoment              = isMoment;
      utils_hooks__hooks.weekdays              = lists__listWeekdays;
      utils_hooks__hooks.parseZone             = moment__createInZone;
      utils_hooks__hooks.localeData            = locale_locales__getLocale;
      utils_hooks__hooks.isDuration            = isDuration;
      utils_hooks__hooks.monthsShort           = lists__listMonthsShort;
      utils_hooks__hooks.weekdaysMin           = lists__listWeekdaysMin;
      utils_hooks__hooks.defineLocale          = defineLocale;
      utils_hooks__hooks.weekdaysShort         = lists__listWeekdaysShort;
      utils_hooks__hooks.normalizeUnits        = normalizeUnits;
      utils_hooks__hooks.relativeTimeThreshold = duration_humanize__getSetRelativeTimeThreshold;
      utils_hooks__hooks.prototype             = momentPrototype;

      var _moment = utils_hooks__hooks;

      return _moment;

  }));
  /* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(4)(module)))

/***/ },
/* 4 */
/***/ function(module, exports) {

  module.exports = function(module) {
  	if(!module.webpackPolyfill) {
  		module.deprecate = function() {};
  		module.paths = [];
  		// module.parent = undefined by default
  		module.children = [];
  		module.webpackPolyfill = 1;
  	}
  	return module;
  }


/***/ },
/* 5 */
/***/ function(module, exports) {

  function webpackContext(req) {
  	throw new Error("Cannot find module '" + req + "'.");
  }
  webpackContext.keys = function() { return []; };
  webpackContext.resolve = webpackContext;
  module.exports = webpackContext;
  webpackContext.id = 5;


/***/ },
/* 6 */
/***/ function(module, exports) {

  /* WEBPACK VAR INJECTION */(function(global) {'use strict';

  var _rng;

  var globalVar = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : null;

  if (globalVar && globalVar.crypto && crypto.getRandomValues) {
    // WHATWG crypto-based RNG - http://wiki.whatwg.org/wiki/Crypto
    // Moderately fast, high quality
    var _rnds8 = new Uint8Array(16);
    _rng = function whatwgRNG() {
      crypto.getRandomValues(_rnds8);
      return _rnds8;
    };
  }

  if (!_rng) {
    // Math.random()-based (RNG)
    //
    // If all else fails, use Math.random().  It's fast, but is of unspecified
    // quality.
    var _rnds = new Array(16);
    _rng = function () {
      for (var i = 0, r; i < 16; i++) {
        if ((i & 0x03) === 0) r = Math.random() * 0x100000000;
        _rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
      }

      return _rnds;
    };
  }

  //     uuid.js
  //
  //     Copyright (c) 2010-2012 Robert Kieffer
  //     MIT License - http://opensource.org/licenses/mit-license.php

  // Unique ID creation requires a high quality random # generator.  We feature
  // detect to determine the best RNG source, normalizing to a function that
  // returns 128-bits of randomness, since that's what's usually required

  //var _rng = require('./rng');

  // Maps for number <-> hex string conversion
  var _byteToHex = [];
  var _hexToByte = {};
  for (var i = 0; i < 256; i++) {
    _byteToHex[i] = (i + 0x100).toString(16).substr(1);
    _hexToByte[_byteToHex[i]] = i;
  }

  // **`parse()` - Parse a UUID into it's component bytes**
  function parse(s, buf, offset) {
    var i = buf && offset || 0,
        ii = 0;

    buf = buf || [];
    s.toLowerCase().replace(/[0-9a-f]{2}/g, function (oct) {
      if (ii < 16) {
        // Don't overflow!
        buf[i + ii++] = _hexToByte[oct];
      }
    });

    // Zero out remaining bytes if string was short
    while (ii < 16) {
      buf[i + ii++] = 0;
    }

    return buf;
  }

  // **`unparse()` - Convert UUID byte array (ala parse()) into a string**
  function unparse(buf, offset) {
    var i = offset || 0,
        bth = _byteToHex;
    return bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]];
  }

  // **`v1()` - Generate time-based UUID**
  //
  // Inspired by https://github.com/LiosK/UUID.js
  // and http://docs.python.org/library/uuid.html

  // random #'s we need to init node and clockseq
  var _seedBytes = _rng();

  // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
  var _nodeId = [_seedBytes[0] | 0x01, _seedBytes[1], _seedBytes[2], _seedBytes[3], _seedBytes[4], _seedBytes[5]];

  // Per 4.2.2, randomize (14 bit) clockseq
  var _clockseq = (_seedBytes[6] << 8 | _seedBytes[7]) & 0x3fff;

  // Previous uuid creation time
  var _lastMSecs = 0,
      _lastNSecs = 0;

  // See https://github.com/broofa/node-uuid for API details
  function v1(options, buf, offset) {
    var i = buf && offset || 0;
    var b = buf || [];

    options = options || {};

    var clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq;

    // UUID timestamps are 100 nano-second units since the Gregorian epoch,
    // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
    // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
    // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
    var msecs = options.msecs !== undefined ? options.msecs : new Date().getTime();

    // Per 4.2.1.2, use count of uuid's generated during the current clock
    // cycle to simulate higher resolution clock
    var nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1;

    // Time since last uuid creation (in msecs)
    var dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 10000;

    // Per 4.2.1.2, Bump clockseq on clock regression
    if (dt < 0 && options.clockseq === undefined) {
      clockseq = clockseq + 1 & 0x3fff;
    }

    // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
    // time interval
    if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {
      nsecs = 0;
    }

    // Per 4.2.1.2 Throw error if too many uuids are requested
    if (nsecs >= 10000) {
      throw new Error('uuid.v1(): Can\'t create more than 10M uuids/sec');
    }

    _lastMSecs = msecs;
    _lastNSecs = nsecs;
    _clockseq = clockseq;

    // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
    msecs += 12219292800000;

    // `time_low`
    var tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
    b[i++] = tl >>> 24 & 0xff;
    b[i++] = tl >>> 16 & 0xff;
    b[i++] = tl >>> 8 & 0xff;
    b[i++] = tl & 0xff;

    // `time_mid`
    var tmh = msecs / 0x100000000 * 10000 & 0xfffffff;
    b[i++] = tmh >>> 8 & 0xff;
    b[i++] = tmh & 0xff;

    // `time_high_and_version`
    b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
    b[i++] = tmh >>> 16 & 0xff;

    // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
    b[i++] = clockseq >>> 8 | 0x80;

    // `clock_seq_low`
    b[i++] = clockseq & 0xff;

    // `node`
    var node = options.node || _nodeId;
    for (var n = 0; n < 6; n++) {
      b[i + n] = node[n];
    }

    return buf ? buf : unparse(b);
  }

  // **`v4()` - Generate random UUID**

  // See https://github.com/broofa/node-uuid for API details
  function v4(options, buf, offset) {
    // Deprecated - 'format' argument, as supported in v1.2
    var i = buf && offset || 0;

    if (typeof options == 'string') {
      buf = options == 'binary' ? new Array(16) : null;
      options = null;
    }
    options = options || {};

    var rnds = options.random || (options.rng || _rng)();

    // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
    rnds[6] = rnds[6] & 0x0f | 0x40;
    rnds[8] = rnds[8] & 0x3f | 0x80;

    // Copy bytes to buffer, if provided
    if (buf) {
      for (var ii = 0; ii < 16; ii++) {
        buf[i + ii] = rnds[ii];
      }
    }

    return buf || unparse(rnds);
  }

  // Export public API
  var uuid = v4;
  uuid.v1 = v1;
  uuid.v4 = v4;
  uuid.parse = parse;
  uuid.unparse = unparse;

  module.exports = uuid;
  /* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))

/***/ },
/* 7 */
/***/ function(module, exports) {

  // DOM utility methods

  /**
   * this prepares the JSON container for allocating SVG elements
   * @param JSONcontainer
   * @private
   */
  'use strict';

  exports.prepareElements = function (JSONcontainer) {
    // cleanup the redundant svgElements;
    for (var elementType in JSONcontainer) {
      if (JSONcontainer.hasOwnProperty(elementType)) {
        JSONcontainer[elementType].redundant = JSONcontainer[elementType].used;
        JSONcontainer[elementType].used = [];
      }
    }
  };

  /**
   * this cleans up all the unused SVG elements. By asking for the parentNode, we only need to supply the JSON container from
   * which to remove the redundant elements.
   *
   * @param JSONcontainer
   * @private
   */
  exports.cleanupElements = function (JSONcontainer) {
    // cleanup the redundant svgElements;
    for (var elementType in JSONcontainer) {
      if (JSONcontainer.hasOwnProperty(elementType)) {
        if (JSONcontainer[elementType].redundant) {
          for (var i = 0; i < JSONcontainer[elementType].redundant.length; i++) {
            JSONcontainer[elementType].redundant[i].parentNode.removeChild(JSONcontainer[elementType].redundant[i]);
          }
          JSONcontainer[elementType].redundant = [];
        }
      }
    }
  };

  /**
   * Ensures that all elements are removed first up so they can be recreated cleanly
   * @param JSONcontainer
   */
  exports.resetElements = function (JSONcontainer) {
    exports.prepareElements(JSONcontainer);
    exports.cleanupElements(JSONcontainer);
    exports.prepareElements(JSONcontainer);
  };

  /**
   * Allocate or generate an SVG element if needed. Store a reference to it in the JSON container and draw it in the svgContainer
   * the JSON container and the SVG container have to be supplied so other svg containers (like the legend) can use this.
   *
   * @param elementType
   * @param JSONcontainer
   * @param svgContainer
   * @returns {*}
   * @private
   */
  exports.getSVGElement = function (elementType, JSONcontainer, svgContainer) {
    var element;
    // allocate SVG element, if it doesnt yet exist, create one.
    if (JSONcontainer.hasOwnProperty(elementType)) {
      // this element has been created before
      // check if there is an redundant element
      if (JSONcontainer[elementType].redundant.length > 0) {
        element = JSONcontainer[elementType].redundant[0];
        JSONcontainer[elementType].redundant.shift();
      } else {
        // create a new element and add it to the SVG
        element = document.createElementNS('http://www.w3.org/2000/svg', elementType);
        svgContainer.appendChild(element);
      }
    } else {
      // create a new element and add it to the SVG, also create a new object in the svgElements to keep track of it.
      element = document.createElementNS('http://www.w3.org/2000/svg', elementType);
      JSONcontainer[elementType] = { used: [], redundant: [] };
      svgContainer.appendChild(element);
    }
    JSONcontainer[elementType].used.push(element);
    return element;
  };

  /**
   * Allocate or generate an SVG element if needed. Store a reference to it in the JSON container and draw it in the svgContainer
   * the JSON container and the SVG container have to be supplied so other svg containers (like the legend) can use this.
   *
   * @param elementType
   * @param JSONcontainer
   * @param DOMContainer
   * @returns {*}
   * @private
   */
  exports.getDOMElement = function (elementType, JSONcontainer, DOMContainer, insertBefore) {
    var element;
    // allocate DOM element, if it doesnt yet exist, create one.
    if (JSONcontainer.hasOwnProperty(elementType)) {
      // this element has been created before
      // check if there is an redundant element
      if (JSONcontainer[elementType].redundant.length > 0) {
        element = JSONcontainer[elementType].redundant[0];
        JSONcontainer[elementType].redundant.shift();
      } else {
        // create a new element and add it to the SVG
        element = document.createElement(elementType);
        if (insertBefore !== undefined) {
          DOMContainer.insertBefore(element, insertBefore);
        } else {
          DOMContainer.appendChild(element);
        }
      }
    } else {
      // create a new element and add it to the SVG, also create a new object in the svgElements to keep track of it.
      element = document.createElement(elementType);
      JSONcontainer[elementType] = { used: [], redundant: [] };
      if (insertBefore !== undefined) {
        DOMContainer.insertBefore(element, insertBefore);
      } else {
        DOMContainer.appendChild(element);
      }
    }
    JSONcontainer[elementType].used.push(element);
    return element;
  };

  /**
   * Draw a point object. This is a separate function because it can also be called by the legend.
   * The reason the JSONcontainer and the target SVG svgContainer have to be supplied is so the legend can use these functions
   * as well.
   *
   * @param x
   * @param y
   * @param groupTemplate: A template containing the necessary information to draw the datapoint e.g., {style: 'circle', size: 5, className: 'className' }
   * @param JSONcontainer
   * @param svgContainer
   * @param labelObj
   * @returns {*}
   */
  exports.drawPoint = function (x, y, groupTemplate, JSONcontainer, svgContainer, labelObj) {
    var point;
    if (groupTemplate.style == 'circle') {
      point = exports.getSVGElement('circle', JSONcontainer, svgContainer);
      point.setAttributeNS(null, "cx", x);
      point.setAttributeNS(null, "cy", y);
      point.setAttributeNS(null, "r", 0.5 * groupTemplate.size);
    } else {
      point = exports.getSVGElement('rect', JSONcontainer, svgContainer);
      point.setAttributeNS(null, "x", x - 0.5 * groupTemplate.size);
      point.setAttributeNS(null, "y", y - 0.5 * groupTemplate.size);
      point.setAttributeNS(null, "width", groupTemplate.size);
      point.setAttributeNS(null, "height", groupTemplate.size);
    }

    if (groupTemplate.styles !== undefined) {
      point.setAttributeNS(null, "style", groupTemplate.styles);
    }
    point.setAttributeNS(null, "class", groupTemplate.className + " vis-point");
    //handle label

    if (labelObj) {
      var label = exports.getSVGElement('text', JSONcontainer, svgContainer);
      if (labelObj.xOffset) {
        x = x + labelObj.xOffset;
      }

      if (labelObj.yOffset) {
        y = y + labelObj.yOffset;
      }
      if (labelObj.content) {
        label.textContent = labelObj.content;
      }

      if (labelObj.className) {
        label.setAttributeNS(null, "class", labelObj.className + " vis-label");
      }
      label.setAttributeNS(null, "x", x);
      label.setAttributeNS(null, "y", y);
    }

    return point;
  };

  /**
   * draw a bar SVG element centered on the X coordinate
   *
   * @param x
   * @param y
   * @param className
   */
  exports.drawBar = function (x, y, width, height, className, JSONcontainer, svgContainer, style) {
    if (height != 0) {
      if (height < 0) {
        height *= -1;
        y -= height;
      }
      var rect = exports.getSVGElement('rect', JSONcontainer, svgContainer);
      rect.setAttributeNS(null, "x", x - 0.5 * width);
      rect.setAttributeNS(null, "y", y);
      rect.setAttributeNS(null, "width", width);
      rect.setAttributeNS(null, "height", height);
      rect.setAttributeNS(null, "class", className);
      if (style) {
        rect.setAttributeNS(null, "style", style);
      }
    }
  };

/***/ },
/* 8 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var Queue = __webpack_require__(9);

  /**
   * DataSet
   *
   * Usage:
   *     var dataSet = new DataSet({
   *         fieldId: '_id',
   *         type: {
   *             // ...
   *         }
   *     });
   *
   *     dataSet.add(item);
   *     dataSet.add(data);
   *     dataSet.update(item);
   *     dataSet.update(data);
   *     dataSet.remove(id);
   *     dataSet.remove(ids);
   *     var data = dataSet.get();
   *     var data = dataSet.get(id);
   *     var data = dataSet.get(ids);
   *     var data = dataSet.get(ids, options, data);
   *     dataSet.clear();
   *
   * A data set can:
   * - add/remove/update data
   * - gives triggers upon changes in the data
   * - can  import/export data in various data formats
   *
   * @param {Array} [data]    Optional array with initial data
   * @param {Object} [options]   Available options:
   *                             {String} fieldId Field name of the id in the
   *                                              items, 'id' by default.
   *                             {Object.<String, String} type
   *                                              A map with field names as key,
   *                                              and the field type as value.
   *                             {Object} queue   Queue changes to the DataSet,
   *                                              flush them all at once.
   *                                              Queue options:
   *                                              - {number} delay  Delay in ms, null by default
   *                                              - {number} max    Maximum number of entries in the queue, Infinity by default
   * @constructor DataSet
   */
  // TODO: add a DataSet constructor DataSet(data, options)
  function DataSet(data, options) {
    // correctly read optional arguments
    if (data && !Array.isArray(data)) {
      options = data;
      data = null;
    }

    this._options = options || {};
    this._data = {}; // map with data indexed by id
    this.length = 0; // number of items in the DataSet
    this._fieldId = this._options.fieldId || 'id'; // name of the field containing id
    this._type = {}; // internal field types (NOTE: this can differ from this._options.type)

    // all variants of a Date are internally stored as Date, so we can convert
    // from everything to everything (also from ISODate to Number for example)
    if (this._options.type) {
      var fields = Object.keys(this._options.type);
      for (var i = 0, len = fields.length; i < len; i++) {
        var field = fields[i];
        var value = this._options.type[field];
        if (value == 'Date' || value == 'ISODate' || value == 'ASPDate') {
          this._type[field] = 'Date';
        } else {
          this._type[field] = value;
        }
      }
    }

    // TODO: deprecated since version 1.1.1 (or 2.0.0?)
    if (this._options.convert) {
      throw new Error('Option "convert" is deprecated. Use "type" instead.');
    }

    this._subscribers = {}; // event subscribers

    // add initial data when provided
    if (data) {
      this.add(data);
    }

    this.setOptions(options);
  }

  /**
   * @param {Object} [options]   Available options:
   *                             {Object} queue   Queue changes to the DataSet,
   *                                              flush them all at once.
   *                                              Queue options:
   *                                              - {number} delay  Delay in ms, null by default
   *                                              - {number} max    Maximum number of entries in the queue, Infinity by default
   * @param options
   */
  DataSet.prototype.setOptions = function (options) {
    if (options && options.queue !== undefined) {
      if (options.queue === false) {
        // delete queue if loaded
        if (this._queue) {
          this._queue.destroy();
          delete this._queue;
        }
      } else {
        // create queue and update its options
        if (!this._queue) {
          this._queue = Queue.extend(this, {
            replace: ['add', 'update', 'remove']
          });
        }

        if (typeof options.queue === 'object') {
          this._queue.setOptions(options.queue);
        }
      }
    }
  };

  /**
   * Subscribe to an event, add an event listener
   * @param {String} event        Event name. Available events: 'put', 'update',
   *                              'remove'
   * @param {function} callback   Callback method. Called with three parameters:
   *                                  {String} event
   *                                  {Object | null} params
   *                                  {String | Number} senderId
   */
  DataSet.prototype.on = function (event, callback) {
    var subscribers = this._subscribers[event];
    if (!subscribers) {
      subscribers = [];
      this._subscribers[event] = subscribers;
    }

    subscribers.push({
      callback: callback
    });
  };

  // TODO: remove this deprecated function some day (replaced with `on` since version 0.5, deprecated since v4.0)
  DataSet.prototype.subscribe = function () {
    throw new Error('DataSet.subscribe is deprecated. Use DataSet.on instead.');
  };

  /**
   * Unsubscribe from an event, remove an event listener
   * @param {String} event
   * @param {function} callback
   */
  DataSet.prototype.off = function (event, callback) {
    var subscribers = this._subscribers[event];
    if (subscribers) {
      this._subscribers[event] = subscribers.filter(function (listener) {
        return listener.callback != callback;
      });
    }
  };

  // TODO: remove this deprecated function some day (replaced with `on` since version 0.5, deprecated since v4.0)
  DataSet.prototype.unsubscribe = function () {
    throw new Error('DataSet.unsubscribe is deprecated. Use DataSet.off instead.');
  };

  /**
   * Trigger an event
   * @param {String} event
   * @param {Object | null} params
   * @param {String} [senderId]       Optional id of the sender.
   * @private
   */
  DataSet.prototype._trigger = function (event, params, senderId) {
    if (event == '*') {
      throw new Error('Cannot trigger event *');
    }

    var subscribers = [];
    if (event in this._subscribers) {
      subscribers = subscribers.concat(this._subscribers[event]);
    }
    if ('*' in this._subscribers) {
      subscribers = subscribers.concat(this._subscribers['*']);
    }

    for (var i = 0, len = subscribers.length; i < len; i++) {
      var subscriber = subscribers[i];
      if (subscriber.callback) {
        subscriber.callback(event, params, senderId || null);
      }
    }
  };

  /**
   * Add data.
   * Adding an item will fail when there already is an item with the same id.
   * @param {Object | Array} data
   * @param {String} [senderId] Optional sender id
   * @return {Array} addedIds      Array with the ids of the added items
   */
  DataSet.prototype.add = function (data, senderId) {
    var addedIds = [],
        id,
        me = this;

    if (Array.isArray(data)) {
      // Array
      for (var i = 0, len = data.length; i < len; i++) {
        id = me._addItem(data[i]);
        addedIds.push(id);
      }
    } else if (data instanceof Object) {
      // Single item
      id = me._addItem(data);
      addedIds.push(id);
    } else {
      throw new Error('Unknown dataType');
    }

    if (addedIds.length) {
      this._trigger('add', { items: addedIds }, senderId);
    }

    return addedIds;
  };

  /**
   * Update existing items. When an item does not exist, it will be created
   * @param {Object | Array} data
   * @param {String} [senderId] Optional sender id
   * @return {Array} updatedIds     The ids of the added or updated items
   */
  DataSet.prototype.update = function (data, senderId) {
    var addedIds = [];
    var updatedIds = [];
    var oldData = [];
    var updatedData = [];
    var me = this;
    var fieldId = me._fieldId;

    var addOrUpdate = function addOrUpdate(item) {
      var id = item[fieldId];
      if (me._data[id]) {
        var oldItem = util.extend({}, me._data[id]);
        // update item
        id = me._updateItem(item);
        updatedIds.push(id);
        updatedData.push(item);
        oldData.push(oldItem);
      } else {
        // add new item
        id = me._addItem(item);
        addedIds.push(id);
      }
    };

    if (Array.isArray(data)) {
      // Array
      for (var i = 0, len = data.length; i < len; i++) {
        if (data[i] instanceof Object) {
          addOrUpdate(data[i]);
        } else {
          console.warn('Ignoring input item, which is not an object at index ' + i);
        }
      }
    } else if (data instanceof Object) {
      // Single item
      addOrUpdate(data);
    } else {
      throw new Error('Unknown dataType');
    }

    if (addedIds.length) {
      this._trigger('add', { items: addedIds }, senderId);
    }
    if (updatedIds.length) {
      var props = { items: updatedIds, oldData: oldData, data: updatedData };
      // TODO: remove deprecated property 'data' some day
      //Object.defineProperty(props, 'data', {
      //  'get': (function() {
      //    console.warn('Property data is deprecated. Use DataSet.get(ids) to retrieve the new data, use the oldData property on this object to get the old data');
      //    return updatedData;
      //  }).bind(this)
      //});
      this._trigger('update', props, senderId);
    }

    return addedIds.concat(updatedIds);
  };

  /**
   * Get a data item or multiple items.
   *
   * Usage:
   *
   *     get()
   *     get(options: Object)
   *
   *     get(id: Number | String)
   *     get(id: Number | String, options: Object)
   *
   *     get(ids: Number[] | String[])
   *     get(ids: Number[] | String[], options: Object)
   *
   * Where:
   *
   * {Number | String} id         The id of an item
   * {Number[] | String{}} ids    An array with ids of items
   * {Object} options             An Object with options. Available options:
   * {String} [returnType]        Type of data to be returned.
   *                              Can be 'Array' (default) or 'Object'.
   * {Object.<String, String>} [type]
   * {String[]} [fields]          field names to be returned
   * {function} [filter]          filter items
   * {String | function} [order]  Order the items by a field name or custom sort function.
   * @throws Error
   */
  DataSet.prototype.get = function (args) {
    var me = this;

    // parse the arguments
    var id, ids, options;
    var firstType = util.getType(arguments[0]);
    if (firstType == 'String' || firstType == 'Number') {
      // get(id [, options])
      id = arguments[0];
      options = arguments[1];
    } else if (firstType == 'Array') {
      // get(ids [, options])
      ids = arguments[0];
      options = arguments[1];
    } else {
      // get([, options])
      options = arguments[0];
    }

    // determine the return type
    var returnType;
    if (options && options.returnType) {
      var allowedValues = ['Array', 'Object'];
      returnType = allowedValues.indexOf(options.returnType) == -1 ? 'Array' : options.returnType;
    } else {
      returnType = 'Array';
    }

    // build options
    var type = options && options.type || this._options.type;
    var filter = options && options.filter;
    var items = [],
        item,
        itemIds,
        itemId,
        i,
        len;

    // convert items
    if (id != undefined) {
      // return a single item
      item = me._getItem(id, type);
      if (item && filter && !filter(item)) {
        item = null;
      }
    } else if (ids != undefined) {
      // return a subset of items
      for (i = 0, len = ids.length; i < len; i++) {
        item = me._getItem(ids[i], type);
        if (!filter || filter(item)) {
          items.push(item);
        }
      }
    } else {
      // return all items
      itemIds = Object.keys(this._data);
      for (i = 0, len = itemIds.length; i < len; i++) {
        itemId = itemIds[i];
        item = me._getItem(itemId, type);
        if (!filter || filter(item)) {
          items.push(item);
        }
      }
    }

    // order the results
    if (options && options.order && id == undefined) {
      this._sort(items, options.order);
    }

    // filter fields of the items
    if (options && options.fields) {
      var fields = options.fields;
      if (id != undefined) {
        item = this._filterFields(item, fields);
      } else {
        for (i = 0, len = items.length; i < len; i++) {
          items[i] = this._filterFields(items[i], fields);
        }
      }
    }

    // return the results
    if (returnType == 'Object') {
      var result = {},
          resultant;
      for (i = 0, len = items.length; i < len; i++) {
        resultant = items[i];
        result[resultant.id] = resultant;
      }
      return result;
    } else {
      if (id != undefined) {
        // a single item
        return item;
      } else {
        // just return our array
        return items;
      }
    }
  };

  /**
   * Get ids of all items or from a filtered set of items.
   * @param {Object} [options]    An Object with options. Available options:
   *                              {function} [filter] filter items
   *                              {String | function} [order] Order the items by
   *                                  a field name or custom sort function.
   * @return {Array} ids
   */
  DataSet.prototype.getIds = function (options) {
    var data = this._data,
        filter = options && options.filter,
        order = options && options.order,
        type = options && options.type || this._options.type,
        itemIds = Object.keys(data),
        i,
        len,
        id,
        item,
        items,
        ids = [];

    if (filter) {
      // get filtered items
      if (order) {
        // create ordered list
        items = [];
        for (i = 0, len = itemIds.length; i < len; i++) {
          id = itemIds[i];
          item = this._getItem(id, type);
          if (filter(item)) {
            items.push(item);
          }
        }

        this._sort(items, order);

        for (i = 0, len = items.length; i < len; i++) {
          ids.push(items[i][this._fieldId]);
        }
      } else {
        // create unordered list
        for (i = 0, len = itemIds.length; i < len; i++) {
          id = itemIds[i];
          item = this._getItem(id, type);
          if (filter(item)) {
            ids.push(item[this._fieldId]);
          }
        }
      }
    } else {
      // get all items
      if (order) {
        // create an ordered list
        items = [];
        for (i = 0, len = itemIds.length; i < len; i++) {
          id = itemIds[i];
          items.push(data[id]);
        }

        this._sort(items, order);

        for (i = 0, len = items.length; i < len; i++) {
          ids.push(items[i][this._fieldId]);
        }
      } else {
        // create unordered list
        for (i = 0, len = itemIds.length; i < len; i++) {
          id = itemIds[i];
          item = data[id];
          ids.push(item[this._fieldId]);
        }
      }
    }

    return ids;
  };

  /**
   * Returns the DataSet itself. Is overwritten for example by the DataView,
   * which returns the DataSet it is connected to instead.
   */
  DataSet.prototype.getDataSet = function () {
    return this;
  };

  /**
   * Execute a callback function for every item in the dataset.
   * @param {function} callback
   * @param {Object} [options]    Available options:
   *                              {Object.<String, String>} [type]
   *                              {String[]} [fields] filter fields
   *                              {function} [filter] filter items
   *                              {String | function} [order] Order the items by
   *                                  a field name or custom sort function.
   */
  DataSet.prototype.forEach = function (callback, options) {
    var filter = options && options.filter,
        type = options && options.type || this._options.type,
        data = this._data,
        itemIds = Object.keys(data),
        i,
        len,
        item,
        id;

    if (options && options.order) {
      // execute forEach on ordered list
      var items = this.get(options);

      for (i = 0, len = items.length; i < len; i++) {
        item = items[i];
        id = item[this._fieldId];
        callback(item, id);
      }
    } else {
      // unordered
      for (i = 0, len = itemIds.length; i < len; i++) {
        id = itemIds[i];
        item = this._getItem(id, type);
        if (!filter || filter(item)) {
          callback(item, id);
        }
      }
    }
  };

  /**
   * Map every item in the dataset.
   * @param {function} callback
   * @param {Object} [options]    Available options:
   *                              {Object.<String, String>} [type]
   *                              {String[]} [fields] filter fields
   *                              {function} [filter] filter items
   *                              {String | function} [order] Order the items by
   *                                  a field name or custom sort function.
   * @return {Object[]} mappedItems
   */
  DataSet.prototype.map = function (callback, options) {
    var filter = options && options.filter,
        type = options && options.type || this._options.type,
        mappedItems = [],
        data = this._data,
        itemIds = Object.keys(data),
        i,
        len,
        id,
        item;

    // convert and filter items
    for (i = 0, len = itemIds.length; i < len; i++) {
      id = itemIds[i];
      item = this._getItem(id, type);
      if (!filter || filter(item)) {
        mappedItems.push(callback(item, id));
      }
    }

    // order items
    if (options && options.order) {
      this._sort(mappedItems, options.order);
    }

    return mappedItems;
  };

  /**
   * Filter the fields of an item
   * @param {Object | null} item
   * @param {String[]} fields     Field names
   * @return {Object | null} filteredItem or null if no item is provided
   * @private
   */
  DataSet.prototype._filterFields = function (item, fields) {
    if (!item) {
      // item is null
      return item;
    }

    var filteredItem = {},
        itemFields = Object.keys(item),
        len = itemFields.length,
        i,
        field;

    if (Array.isArray(fields)) {
      for (i = 0; i < len; i++) {
        field = itemFields[i];
        if (fields.indexOf(field) != -1) {
          filteredItem[field] = item[field];
        }
      }
    } else {
      for (i = 0; i < len; i++) {
        field = itemFields[i];
        if (fields.hasOwnProperty(field)) {
          filteredItem[fields[field]] = item[field];
        }
      }
    }

    return filteredItem;
  };

  /**
   * Sort the provided array with items
   * @param {Object[]} items
   * @param {String | function} order      A field name or custom sort function.
   * @private
   */
  DataSet.prototype._sort = function (items, order) {
    if (util.isString(order)) {
      // order by provided field name
      var name = order; // field name
      items.sort(function (a, b) {
        var av = a[name];
        var bv = b[name];
        return av > bv ? 1 : av < bv ? -1 : 0;
      });
    } else if (typeof order === 'function') {
      // order by sort function
      items.sort(order);
    }
    // TODO: extend order by an Object {field:String, direction:String}
    //       where direction can be 'asc' or 'desc'
    else {
        throw new TypeError('Order must be a function or a string');
      }
  };

  /**
   * Remove an object by pointer or by id
   * @param {String | Number | Object | Array} id Object or id, or an array with
   *                                              objects or ids to be removed
   * @param {String} [senderId] Optional sender id
   * @return {Array} removedIds
   */
  DataSet.prototype.remove = function (id, senderId) {
    var removedIds = [],
        i,
        len,
        removedId;

    if (Array.isArray(id)) {
      for (i = 0, len = id.length; i < len; i++) {
        removedId = this._remove(id[i]);
        if (removedId != null) {
          removedIds.push(removedId);
        }
      }
    } else {
      removedId = this._remove(id);
      if (removedId != null) {
        removedIds.push(removedId);
      }
    }

    if (removedIds.length) {
      this._trigger('remove', { items: removedIds }, senderId);
    }

    return removedIds;
  };

  /**
   * Remove an item by its id
   * @param {Number | String | Object} id   id or item
   * @returns {Number | String | null} id
   * @private
   */
  DataSet.prototype._remove = function (id) {
    if (util.isNumber(id) || util.isString(id)) {
      if (this._data[id]) {
        delete this._data[id];
        this.length--;
        return id;
      }
    } else if (id instanceof Object) {
      var itemId = id[this._fieldId];
      if (itemId !== undefined && this._data[itemId]) {
        delete this._data[itemId];
        this.length--;
        return itemId;
      }
    }
    return null;
  };

  /**
   * Clear the data
   * @param {String} [senderId] Optional sender id
   * @return {Array} removedIds    The ids of all removed items
   */
  DataSet.prototype.clear = function (senderId) {
    var ids = Object.keys(this._data);

    this._data = {};
    this.length = 0;

    this._trigger('remove', { items: ids }, senderId);

    return ids;
  };

  /**
   * Find the item with maximum value of a specified field
   * @param {String} field
   * @return {Object | null} item  Item containing max value, or null if no items
   */
  DataSet.prototype.max = function (field) {
    var data = this._data,
        itemIds = Object.keys(data),
        max = null,
        maxField = null,
        i,
        len;

    for (i = 0, len = itemIds.length; i < len; i++) {
      var id = itemIds[i];
      var item = data[id];
      var itemField = item[field];
      if (itemField != null && (!max || itemField > maxField)) {
        max = item;
        maxField = itemField;
      }
    }

    return max;
  };

  /**
   * Find the item with minimum value of a specified field
   * @param {String} field
   * @return {Object | null} item  Item containing max value, or null if no items
   */
  DataSet.prototype.min = function (field) {
    var data = this._data,
        itemIds = Object.keys(data),
        min = null,
        minField = null,
        i,
        len;

    for (i = 0, len = itemIds.length; i < len; i++) {
      var id = itemIds[i];
      var item = data[id];
      var itemField = item[field];
      if (itemField != null && (!min || itemField < minField)) {
        min = item;
        minField = itemField;
      }
    }

    return min;
  };

  /**
   * Find all distinct values of a specified field
   * @param {String} field
   * @return {Array} values  Array containing all distinct values. If data items
   *                         do not contain the specified field are ignored.
   *                         The returned array is unordered.
   */
  DataSet.prototype.distinct = function (field) {
    var data = this._data;
    var itemIds = Object.keys(data);
    var values = [];
    var fieldType = this._options.type && this._options.type[field] || null;
    var count = 0;
    var i, j, len;

    for (i = 0, len = itemIds.length; i < len; i++) {
      var id = itemIds[i];
      var item = data[id];
      var value = item[field];
      var exists = false;
      for (j = 0; j < count; j++) {
        if (values[j] == value) {
          exists = true;
          break;
        }
      }
      if (!exists && value !== undefined) {
        values[count] = value;
        count++;
      }
    }

    if (fieldType) {
      for (i = 0, len = values.length; i < len; i++) {
        values[i] = util.convert(values[i], fieldType);
      }
    }

    return values;
  };

  /**
   * Add a single item. Will fail when an item with the same id already exists.
   * @param {Object} item
   * @return {String} id
   * @private
   */
  DataSet.prototype._addItem = function (item) {
    var id = item[this._fieldId];

    if (id != undefined) {
      // check whether this id is already taken
      if (this._data[id]) {
        // item already exists
        throw new Error('Cannot add item: item with id ' + id + ' already exists');
      }
    } else {
      // generate an id
      id = util.randomUUID();
      item[this._fieldId] = id;
    }

    var d = {},
        fields = Object.keys(item),
        i,
        len;
    for (i = 0, len = fields.length; i < len; i++) {
      var field = fields[i];
      var fieldType = this._type[field]; // type may be undefined
      d[field] = util.convert(item[field], fieldType);
    }
    this._data[id] = d;
    this.length++;

    return id;
  };

  /**
   * Get an item. Fields can be converted to a specific type
   * @param {String} id
   * @param {Object.<String, String>} [types]  field types to convert
   * @return {Object | null} item
   * @private
   */
  DataSet.prototype._getItem = function (id, types) {
    var field, value, i, len;

    // get the item from the dataset
    var raw = this._data[id];
    if (!raw) {
      return null;
    }

    // convert the items field types
    var converted = {},
        fields = Object.keys(raw);

    if (types) {
      for (i = 0, len = fields.length; i < len; i++) {
        field = fields[i];
        value = raw[field];
        converted[field] = util.convert(value, types[field]);
      }
    } else {
      // no field types specified, no converting needed
      for (i = 0, len = fields.length; i < len; i++) {
        field = fields[i];
        value = raw[field];
        converted[field] = value;
      }
    }
    return converted;
  };

  /**
   * Update a single item: merge with existing item.
   * Will fail when the item has no id, or when there does not exist an item
   * with the same id.
   * @param {Object} item
   * @return {String} id
   * @private
   */
  DataSet.prototype._updateItem = function (item) {
    var id = item[this._fieldId];
    if (id == undefined) {
      throw new Error('Cannot update item: item has no id (item: ' + JSON.stringify(item) + ')');
    }
    var d = this._data[id];
    if (!d) {
      // item doesn't exist
      throw new Error('Cannot update item: no item with id ' + id + ' found');
    }

    // merge with current item
    var fields = Object.keys(item);
    for (var i = 0, len = fields.length; i < len; i++) {
      var field = fields[i];
      var fieldType = this._type[field]; // type may be undefined
      d[field] = util.convert(item[field], fieldType);
    }

    return id;
  };

  module.exports = DataSet;

/***/ },
/* 9 */
/***/ function(module, exports) {

  /**
   * A queue
   * @param {Object} options
   *            Available options:
   *            - delay: number    When provided, the queue will be flushed
   *                               automatically after an inactivity of this delay
   *                               in milliseconds.
   *                               Default value is null.
   *            - max: number      When the queue exceeds the given maximum number
   *                               of entries, the queue is flushed automatically.
   *                               Default value of max is Infinity.
   * @constructor
   */
  'use strict';

  function Queue(options) {
    // options
    this.delay = null;
    this.max = Infinity;

    // properties
    this._queue = [];
    this._timeout = null;
    this._extended = null;

    this.setOptions(options);
  }

  /**
   * Update the configuration of the queue
   * @param {Object} options
   *            Available options:
   *            - delay: number    When provided, the queue will be flushed
   *                               automatically after an inactivity of this delay
   *                               in milliseconds.
   *                               Default value is null.
   *            - max: number      When the queue exceeds the given maximum number
   *                               of entries, the queue is flushed automatically.
   *                               Default value of max is Infinity.
   * @param options
   */
  Queue.prototype.setOptions = function (options) {
    if (options && typeof options.delay !== 'undefined') {
      this.delay = options.delay;
    }
    if (options && typeof options.max !== 'undefined') {
      this.max = options.max;
    }

    this._flushIfNeeded();
  };

  /**
   * Extend an object with queuing functionality.
   * The object will be extended with a function flush, and the methods provided
   * in options.replace will be replaced with queued ones.
   * @param {Object} object
   * @param {Object} options
   *            Available options:
   *            - replace: Array.<string>
   *                               A list with method names of the methods
   *                               on the object to be replaced with queued ones.
   *            - delay: number    When provided, the queue will be flushed
   *                               automatically after an inactivity of this delay
   *                               in milliseconds.
   *                               Default value is null.
   *            - max: number      When the queue exceeds the given maximum number
   *                               of entries, the queue is flushed automatically.
   *                               Default value of max is Infinity.
   * @return {Queue} Returns the created queue
   */
  Queue.extend = function (object, options) {
    var queue = new Queue(options);

    if (object.flush !== undefined) {
      throw new Error('Target object already has a property flush');
    }
    object.flush = function () {
      queue.flush();
    };

    var methods = [{
      name: 'flush',
      original: undefined
    }];

    if (options && options.replace) {
      for (var i = 0; i < options.replace.length; i++) {
        var name = options.replace[i];
        methods.push({
          name: name,
          original: object[name]
        });
        queue.replace(object, name);
      }
    }

    queue._extended = {
      object: object,
      methods: methods
    };

    return queue;
  };

  /**
   * Destroy the queue. The queue will first flush all queued actions, and in
   * case it has extended an object, will restore the original object.
   */
  Queue.prototype.destroy = function () {
    this.flush();

    if (this._extended) {
      var object = this._extended.object;
      var methods = this._extended.methods;
      for (var i = 0; i < methods.length; i++) {
        var method = methods[i];
        if (method.original) {
          object[method.name] = method.original;
        } else {
          delete object[method.name];
        }
      }
      this._extended = null;
    }
  };

  /**
   * Replace a method on an object with a queued version
   * @param {Object} object   Object having the method
   * @param {string} method   The method name
   */
  Queue.prototype.replace = function (object, method) {
    var me = this;
    var original = object[method];
    if (!original) {
      throw new Error('Method ' + method + ' undefined');
    }

    object[method] = function () {
      // create an Array with the arguments
      var args = [];
      for (var i = 0; i < arguments.length; i++) {
        args[i] = arguments[i];
      }

      // add this call to the queue
      me.queue({
        args: args,
        fn: original,
        context: this
      });
    };
  };

  /**
   * Queue a call
   * @param {function | {fn: function, args: Array} | {fn: function, args: Array, context: Object}} entry
   */
  Queue.prototype.queue = function (entry) {
    if (typeof entry === 'function') {
      this._queue.push({ fn: entry });
    } else {
      this._queue.push(entry);
    }

    this._flushIfNeeded();
  };

  /**
   * Check whether the queue needs to be flushed
   * @private
   */
  Queue.prototype._flushIfNeeded = function () {
    // flush when the maximum is exceeded.
    if (this._queue.length > this.max) {
      this.flush();
    }

    // flush after a period of inactivity when a delay is configured
    clearTimeout(this._timeout);
    if (this.queue.length > 0 && typeof this.delay === 'number') {
      var me = this;
      this._timeout = setTimeout(function () {
        me.flush();
      }, this.delay);
    }
  };

  /**
   * Flush all queued calls
   */
  Queue.prototype.flush = function () {
    while (this._queue.length > 0) {
      var entry = this._queue.shift();
      entry.fn.apply(entry.context || entry.fn, entry.args || []);
    }
  };

  module.exports = Queue;

/***/ },
/* 10 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);

  /**
   * DataView
   *
   * a dataview offers a filtered view on a dataset or an other dataview.
   *
   * @param {DataSet | DataView} data
   * @param {Object} [options]   Available options: see method get
   *
   * @constructor DataView
   */
  function DataView(data, options) {
    this._data = null;
    this._ids = {}; // ids of the items currently in memory (just contains a boolean true)
    this.length = 0; // number of items in the DataView
    this._options = options || {};
    this._fieldId = 'id'; // name of the field containing id
    this._subscribers = {}; // event subscribers

    var me = this;
    this.listener = function () {
      me._onEvent.apply(me, arguments);
    };

    this.setData(data);
  }

  // TODO: implement a function .config() to dynamically update things like configured filter
  // and trigger changes accordingly

  /**
   * Set a data source for the view
   * @param {DataSet | DataView} data
   */
  DataView.prototype.setData = function (data) {
    var ids, id, i, len;

    if (this._data) {
      // unsubscribe from current dataset
      if (this._data.off) {
        this._data.off('*', this.listener);
      }

      // trigger a remove of all items in memory
      ids = Object.keys(this._ids);
      this._ids = {};
      this.length = 0;
      this._trigger('remove', { items: ids });
    }

    this._data = data;

    if (this._data) {
      // update fieldId
      this._fieldId = this._options.fieldId || this._data && this._data.options && this._data.options.fieldId || 'id';

      // trigger an add of all added items
      ids = this._data.getIds({ filter: this._options && this._options.filter });
      for (i = 0, len = ids.length; i < len; i++) {
        id = ids[i];
        this._ids[id] = true;
      }
      this.length = ids.length;
      this._trigger('add', { items: ids });

      // subscribe to new dataset
      if (this._data.on) {
        this._data.on('*', this.listener);
      }
    }
  };

  /**
   * Refresh the DataView. Useful when the DataView has a filter function
   * containing a variable parameter.
   */
  DataView.prototype.refresh = function () {
    var id, i, len;
    var ids = this._data.getIds({ filter: this._options && this._options.filter });
    var oldIds = Object.keys(this._ids);
    var newIds = {};
    var added = [];
    var removed = [];

    // check for additions
    for (i = 0, len = ids.length; i < len; i++) {
      id = ids[i];
      newIds[id] = true;
      if (!this._ids[id]) {
        added.push(id);
        this._ids[id] = true;
      }
    }

    // check for removals
    for (i = 0, len = oldIds.length; i < len; i++) {
      id = oldIds[i];
      if (!newIds[id]) {
        removed.push(id);
        delete this._ids[id];
      }
    }

    this.length += added.length - removed.length;

    // trigger events
    if (added.length) {
      this._trigger('add', { items: added });
    }
    if (removed.length) {
      this._trigger('remove', { items: removed });
    }
  };

  /**
   * Get data from the data view
   *
   * Usage:
   *
   *     get()
   *     get(options: Object)
   *     get(options: Object, data: Array | DataTable)
   *
   *     get(id: Number)
   *     get(id: Number, options: Object)
   *     get(id: Number, options: Object, data: Array | DataTable)
   *
   *     get(ids: Number[])
   *     get(ids: Number[], options: Object)
   *     get(ids: Number[], options: Object, data: Array | DataTable)
   *
   * Where:
   *
   * {Number | String} id         The id of an item
   * {Number[] | String{}} ids    An array with ids of items
   * {Object} options             An Object with options. Available options:
   *                              {String} [type] Type of data to be returned. Can
   *                                              be 'DataTable' or 'Array' (default)
   *                              {Object.<String, String>} [convert]
   *                              {String[]} [fields] field names to be returned
   *                              {function} [filter] filter items
   *                              {String | function} [order] Order the items by
   *                                  a field name or custom sort function.
   * {Array | DataTable} [data]   If provided, items will be appended to this
   *                              array or table. Required in case of Google
   *                              DataTable.
   * @param args
   */
  DataView.prototype.get = function (args) {
    var me = this;

    // parse the arguments
    var ids, options, data;
    var firstType = util.getType(arguments[0]);
    if (firstType == 'String' || firstType == 'Number' || firstType == 'Array') {
      // get(id(s) [, options] [, data])
      ids = arguments[0]; // can be a single id or an array with ids
      options = arguments[1];
      data = arguments[2];
    } else {
      // get([, options] [, data])
      options = arguments[0];
      data = arguments[1];
    }

    // extend the options with the default options and provided options
    var viewOptions = util.extend({}, this._options, options);

    // create a combined filter method when needed
    if (this._options.filter && options && options.filter) {
      viewOptions.filter = function (item) {
        return me._options.filter(item) && options.filter(item);
      };
    }

    // build up the call to the linked data set
    var getArguments = [];
    if (ids != undefined) {
      getArguments.push(ids);
    }
    getArguments.push(viewOptions);
    getArguments.push(data);

    return this._data && this._data.get.apply(this._data, getArguments);
  };

  /**
   * Get ids of all items or from a filtered set of items.
   * @param {Object} [options]    An Object with options. Available options:
   *                              {function} [filter] filter items
   *                              {String | function} [order] Order the items by
   *                                  a field name or custom sort function.
   * @return {Array} ids
   */
  DataView.prototype.getIds = function (options) {
    var ids;

    if (this._data) {
      var defaultFilter = this._options.filter;
      var filter;

      if (options && options.filter) {
        if (defaultFilter) {
          filter = function (item) {
            return defaultFilter(item) && options.filter(item);
          };
        } else {
          filter = options.filter;
        }
      } else {
        filter = defaultFilter;
      }

      ids = this._data.getIds({
        filter: filter,
        order: options && options.order
      });
    } else {
      ids = [];
    }

    return ids;
  };

  /**
   * Map every item in the dataset.
   * @param {function} callback
   * @param {Object} [options]    Available options:
   *                              {Object.<String, String>} [type]
   *                              {String[]} [fields] filter fields
   *                              {function} [filter] filter items
   *                              {String | function} [order] Order the items by
   *                                  a field name or custom sort function.
   * @return {Object[]} mappedItems
   */
  DataView.prototype.map = function (callback, options) {
    var mappedItems = [];
    if (this._data) {
      var defaultFilter = this._options.filter;
      var filter;

      if (options && options.filter) {
        if (defaultFilter) {
          filter = function (item) {
            return defaultFilter(item) && options.filter(item);
          };
        } else {
          filter = options.filter;
        }
      } else {
        filter = defaultFilter;
      }

      mappedItems = this._data.map(callback, {
        filter: filter,
        order: options && options.order
      });
    } else {
      mappedItems = [];
    }

    return mappedItems;
  };

  /**
   * Get the DataSet to which this DataView is connected. In case there is a chain
   * of multiple DataViews, the root DataSet of this chain is returned.
   * @return {DataSet} dataSet
   */
  DataView.prototype.getDataSet = function () {
    var dataSet = this;
    while (dataSet instanceof DataView) {
      dataSet = dataSet._data;
    }
    return dataSet || null;
  };

  /**
   * Event listener. Will propagate all events from the connected data set to
   * the subscribers of the DataView, but will filter the items and only trigger
   * when there are changes in the filtered data set.
   * @param {String} event
   * @param {Object | null} params
   * @param {String} senderId
   * @private
   */
  DataView.prototype._onEvent = function (event, params, senderId) {
    var i, len, id, item;
    var ids = params && params.items;
    var data = this._data;
    var updatedData = [];
    var added = [];
    var updated = [];
    var removed = [];

    if (ids && data) {
      switch (event) {
        case 'add':
          // filter the ids of the added items
          for (i = 0, len = ids.length; i < len; i++) {
            id = ids[i];
            item = this.get(id);
            if (item) {
              this._ids[id] = true;
              added.push(id);
            }
          }

          break;

        case 'update':
          // determine the event from the views viewpoint: an updated
          // item can be added, updated, or removed from this view.
          for (i = 0, len = ids.length; i < len; i++) {
            id = ids[i];
            item = this.get(id);

            if (item) {
              if (this._ids[id]) {
                updated.push(id);
                updatedData.push(params.data[i]);
              } else {
                this._ids[id] = true;
                added.push(id);
              }
            } else {
              if (this._ids[id]) {
                delete this._ids[id];
                removed.push(id);
              } else {
                // nothing interesting for me :-(
              }
            }
          }

          break;

        case 'remove':
          // filter the ids of the removed items
          for (i = 0, len = ids.length; i < len; i++) {
            id = ids[i];
            if (this._ids[id]) {
              delete this._ids[id];
              removed.push(id);
            }
          }

          break;
      }

      this.length += added.length - removed.length;

      if (added.length) {
        this._trigger('add', { items: added }, senderId);
      }
      if (updated.length) {
        this._trigger('update', { items: updated, data: updatedData }, senderId);
      }
      if (removed.length) {
        this._trigger('remove', { items: removed }, senderId);
      }
    }
  };

  // copy subscription functionality from DataSet
  DataView.prototype.on = DataSet.prototype.on;
  DataView.prototype.off = DataSet.prototype.off;
  DataView.prototype._trigger = DataSet.prototype._trigger;

  // TODO: make these functions deprecated (replaced with `on` and `off` since version 0.5)
  DataView.prototype.subscribe = DataView.prototype.on;
  DataView.prototype.unsubscribe = DataView.prototype.off;

  module.exports = DataView;

/***/ },
/* 11 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Emitter = __webpack_require__(12);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var util = __webpack_require__(1);
  var Point3d = __webpack_require__(13);
  var Point2d = __webpack_require__(14);
  var Camera = __webpack_require__(15);
  var Filter = __webpack_require__(16);
  var Slider = __webpack_require__(17);
  var StepNumber = __webpack_require__(18);

  /**
   * @constructor Graph3d
   * Graph3d displays data in 3d.
   *
   * Graph3d is developed in javascript as a Google Visualization Chart.
   *
   * @param {Element} container   The DOM element in which the Graph3d will
   *                              be created. Normally a div element.
   * @param {DataSet | DataView | Array} [data]
   * @param {Object} [options]
   */
  function Graph3d(container, data, options) {
    if (!(this instanceof Graph3d)) {
      throw new SyntaxError('Constructor must be called with the new operator');
    }

    // create variables and set default values
    this.containerElement = container;
    this.width = '400px';
    this.height = '400px';
    this.margin = 10; // px
    this.defaultXCenter = '55%';
    this.defaultYCenter = '50%';

    this.xLabel = 'x';
    this.yLabel = 'y';
    this.zLabel = 'z';

    var passValueFn = function passValueFn(v) {
      return v;
    };
    this.xValueLabel = passValueFn;
    this.yValueLabel = passValueFn;
    this.zValueLabel = passValueFn;

    this.filterLabel = 'time';
    this.legendLabel = 'value';

    this.style = Graph3d.STYLE.DOT;
    this.showPerspective = true;
    this.showGrid = true;
    this.keepAspectRatio = true;
    this.showShadow = false;
    this.showGrayBottom = false; // TODO: this does not work correctly
    this.showTooltip = false;
    this.verticalRatio = 0.5; // 0.1 to 1.0, where 1.0 results in a 'cube'

    this.animationInterval = 1000; // milliseconds
    this.animationPreload = false;

    this.camera = new Camera();
    this.camera.setArmRotation(1.0, 0.5);
    this.camera.setArmLength(1.7);
    this.eye = new Point3d(0, 0, -1); // TODO: set eye.z about 3/4 of the width of the window?

    this.dataTable = null; // The original data table
    this.dataPoints = null; // The table with point objects

    // the column indexes
    this.colX = undefined;
    this.colY = undefined;
    this.colZ = undefined;
    this.colValue = undefined;
    this.colFilter = undefined;

    this.xMin = 0;
    this.xStep = undefined; // auto by default
    this.xMax = 1;
    this.yMin = 0;
    this.yStep = undefined; // auto by default
    this.yMax = 1;
    this.zMin = 0;
    this.zStep = undefined; // auto by default
    this.zMax = 1;
    this.valueMin = 0;
    this.valueMax = 1;
    this.xBarWidth = 1;
    this.yBarWidth = 1;
    // TODO: customize axis range

    // colors
    this.axisColor = '#4D4D4D';
    this.gridColor = '#D3D3D3';
    this.dataColor = {
      fill: '#7DC1FF',
      stroke: '#3267D2',
      strokeWidth: 1 // px
    };

    this.dotSizeRatio = 0.02; // size of the dots as a fraction of the graph width

    // create a frame and canvas
    this.create();

    // apply options (also when undefined)
    this.setOptions(options);

    // apply data
    if (data) {
      this.setData(data);
    }
  }

  // Extend Graph3d with an Emitter mixin
  Emitter(Graph3d.prototype);

  /**
   * Calculate the scaling values, dependent on the range in x, y, and z direction
   */
  Graph3d.prototype._setScale = function () {
    this.scale = new Point3d(1 / (this.xMax - this.xMin), 1 / (this.yMax - this.yMin), 1 / (this.zMax - this.zMin));

    // keep aspect ration between x and y scale if desired
    if (this.keepAspectRatio) {
      if (this.scale.x < this.scale.y) {
        //noinspection JSSuspiciousNameCombination
        this.scale.y = this.scale.x;
      } else {
        //noinspection JSSuspiciousNameCombination
        this.scale.x = this.scale.y;
      }
    }

    // scale the vertical axis
    this.scale.z *= this.verticalRatio;
    // TODO: can this be automated? verticalRatio?

    // determine scale for (optional) value
    this.scale.value = 1 / (this.valueMax - this.valueMin);

    // position the camera arm
    var xCenter = (this.xMax + this.xMin) / 2 * this.scale.x;
    var yCenter = (this.yMax + this.yMin) / 2 * this.scale.y;
    var zCenter = (this.zMax + this.zMin) / 2 * this.scale.z;
    this.camera.setArmLocation(xCenter, yCenter, zCenter);
  };

  /**
   * Convert a 3D location to a 2D location on screen
   * http://en.wikipedia.org/wiki/3D_projection
   * @param {Point3d} point3d   A 3D point with parameters x, y, z
   * @return {Point2d} point2d  A 2D point with parameters x, y
   */
  Graph3d.prototype._convert3Dto2D = function (point3d) {
    var translation = this._convertPointToTranslation(point3d);
    return this._convertTranslationToScreen(translation);
  };

  /**
   * Convert a 3D location its translation seen from the camera
   * http://en.wikipedia.org/wiki/3D_projection
   * @param {Point3d} point3d    A 3D point with parameters x, y, z
   * @return {Point3d} translation A 3D point with parameters x, y, z This is
   *                   the translation of the point, seen from the
   *                   camera
   */
  Graph3d.prototype._convertPointToTranslation = function (point3d) {
    var ax = point3d.x * this.scale.x,
        ay = point3d.y * this.scale.y,
        az = point3d.z * this.scale.z,
        cx = this.camera.getCameraLocation().x,
        cy = this.camera.getCameraLocation().y,
        cz = this.camera.getCameraLocation().z,

    // calculate angles
    sinTx = Math.sin(this.camera.getCameraRotation().x),
        cosTx = Math.cos(this.camera.getCameraRotation().x),
        sinTy = Math.sin(this.camera.getCameraRotation().y),
        cosTy = Math.cos(this.camera.getCameraRotation().y),
        sinTz = Math.sin(this.camera.getCameraRotation().z),
        cosTz = Math.cos(this.camera.getCameraRotation().z),

    // calculate translation
    dx = cosTy * (sinTz * (ay - cy) + cosTz * (ax - cx)) - sinTy * (az - cz),
        dy = sinTx * (cosTy * (az - cz) + sinTy * (sinTz * (ay - cy) + cosTz * (ax - cx))) + cosTx * (cosTz * (ay - cy) - sinTz * (ax - cx)),
        dz = cosTx * (cosTy * (az - cz) + sinTy * (sinTz * (ay - cy) + cosTz * (ax - cx))) - sinTx * (cosTz * (ay - cy) - sinTz * (ax - cx));

    return new Point3d(dx, dy, dz);
  };

  /**
   * Convert a translation point to a point on the screen
   * @param {Point3d} translation   A 3D point with parameters x, y, z This is
   *                    the translation of the point, seen from the
   *                    camera
   * @return {Point2d} point2d    A 2D point with parameters x, y
   */
  Graph3d.prototype._convertTranslationToScreen = function (translation) {
    var ex = this.eye.x,
        ey = this.eye.y,
        ez = this.eye.z,
        dx = translation.x,
        dy = translation.y,
        dz = translation.z;

    // calculate position on screen from translation
    var bx;
    var by;
    if (this.showPerspective) {
      bx = (dx - ex) * (ez / dz);
      by = (dy - ey) * (ez / dz);
    } else {
      bx = dx * -(ez / this.camera.getArmLength());
      by = dy * -(ez / this.camera.getArmLength());
    }

    // shift and scale the point to the center of the screen
    // use the width of the graph to scale both horizontally and vertically.
    return new Point2d(this.xcenter + bx * this.frame.canvas.clientWidth, this.ycenter - by * this.frame.canvas.clientWidth);
  };

  /**
   * Set the background styling for the graph
   * @param {string | {fill: string, stroke: string, strokeWidth: string}} backgroundColor
   */
  Graph3d.prototype._setBackgroundColor = function (backgroundColor) {
    var fill = 'white';
    var stroke = 'gray';
    var strokeWidth = 1;

    if (typeof backgroundColor === 'string') {
      fill = backgroundColor;
      stroke = 'none';
      strokeWidth = 0;
    } else if (typeof backgroundColor === 'object') {
      if (backgroundColor.fill !== undefined) fill = backgroundColor.fill;
      if (backgroundColor.stroke !== undefined) stroke = backgroundColor.stroke;
      if (backgroundColor.strokeWidth !== undefined) strokeWidth = backgroundColor.strokeWidth;
    } else if (backgroundColor === undefined) {
      // use use defaults
    } else {
        throw 'Unsupported type of backgroundColor';
      }

    this.frame.style.backgroundColor = fill;
    this.frame.style.borderColor = stroke;
    this.frame.style.borderWidth = strokeWidth + 'px';
    this.frame.style.borderStyle = 'solid';
  };

  /// enumerate the available styles
  Graph3d.STYLE = {
    BAR: 0,
    BARCOLOR: 1,
    BARSIZE: 2,
    DOT: 3,
    DOTLINE: 4,
    DOTCOLOR: 5,
    DOTSIZE: 6,
    GRID: 7,
    LINE: 8,
    SURFACE: 9
  };

  /**
   * Retrieve the style index from given styleName
   * @param {string} styleName  Style name such as 'dot', 'grid', 'dot-line'
   * @return {Number} styleNumber Enumeration value representing the style, or -1
   *                when not found
   */
  Graph3d.prototype._getStyleNumber = function (styleName) {
    switch (styleName) {
      case 'dot':
        return Graph3d.STYLE.DOT;
      case 'dot-line':
        return Graph3d.STYLE.DOTLINE;
      case 'dot-color':
        return Graph3d.STYLE.DOTCOLOR;
      case 'dot-size':
        return Graph3d.STYLE.DOTSIZE;
      case 'line':
        return Graph3d.STYLE.LINE;
      case 'grid':
        return Graph3d.STYLE.GRID;
      case 'surface':
        return Graph3d.STYLE.SURFACE;
      case 'bar':
        return Graph3d.STYLE.BAR;
      case 'bar-color':
        return Graph3d.STYLE.BARCOLOR;
      case 'bar-size':
        return Graph3d.STYLE.BARSIZE;
    }

    return -1;
  };

  /**
   * Determine the indexes of the data columns, based on the given style and data
   * @param {DataSet} data
   * @param {Number}  style
   */
  Graph3d.prototype._determineColumnIndexes = function (data, style) {
    if (this.style === Graph3d.STYLE.DOT || this.style === Graph3d.STYLE.DOTLINE || this.style === Graph3d.STYLE.LINE || this.style === Graph3d.STYLE.GRID || this.style === Graph3d.STYLE.SURFACE || this.style === Graph3d.STYLE.BAR) {
      // 3 columns expected, and optionally a 4th with filter values
      this.colX = 0;
      this.colY = 1;
      this.colZ = 2;
      this.colValue = undefined;

      if (data.getNumberOfColumns() > 3) {
        this.colFilter = 3;
      }
    } else if (this.style === Graph3d.STYLE.DOTCOLOR || this.style === Graph3d.STYLE.DOTSIZE || this.style === Graph3d.STYLE.BARCOLOR || this.style === Graph3d.STYLE.BARSIZE) {
      // 4 columns expected, and optionally a 5th with filter values
      this.colX = 0;
      this.colY = 1;
      this.colZ = 2;
      this.colValue = 3;

      if (data.getNumberOfColumns() > 4) {
        this.colFilter = 4;
      }
    } else {
      throw 'Unknown style "' + this.style + '"';
    }
  };

  Graph3d.prototype.getNumberOfRows = function (data) {
    return data.length;
  };

  Graph3d.prototype.getNumberOfColumns = function (data) {
    var counter = 0;
    for (var column in data[0]) {
      if (data[0].hasOwnProperty(column)) {
        counter++;
      }
    }
    return counter;
  };

  Graph3d.prototype.getDistinctValues = function (data, column) {
    var distinctValues = [];
    for (var i = 0; i < data.length; i++) {
      if (distinctValues.indexOf(data[i][column]) == -1) {
        distinctValues.push(data[i][column]);
      }
    }
    return distinctValues;
  };

  Graph3d.prototype.getColumnRange = function (data, column) {
    var minMax = { min: data[0][column], max: data[0][column] };
    for (var i = 0; i < data.length; i++) {
      if (minMax.min > data[i][column]) {
        minMax.min = data[i][column];
      }
      if (minMax.max < data[i][column]) {
        minMax.max = data[i][column];
      }
    }
    return minMax;
  };

  /**
   * Initialize the data from the data table. Calculate minimum and maximum values
   * and column index values
   * @param {Array | DataSet | DataView} rawData   The data containing the items for the Graph.
   * @param {Number}     style   Style Number
   */
  Graph3d.prototype._dataInitialize = function (rawData, style) {
    var me = this;

    // unsubscribe from the dataTable
    if (this.dataSet) {
      this.dataSet.off('*', this._onChange);
    }

    if (rawData === undefined) return;

    if (Array.isArray(rawData)) {
      rawData = new DataSet(rawData);
    }

    var data;
    if (rawData instanceof DataSet || rawData instanceof DataView) {
      data = rawData.get();
    } else {
      throw new Error('Array, DataSet, or DataView expected');
    }

    if (data.length == 0) return;

    this.dataSet = rawData;
    this.dataTable = data;

    // subscribe to changes in the dataset
    this._onChange = function () {
      me.setData(me.dataSet);
    };
    this.dataSet.on('*', this._onChange);

    // _determineColumnIndexes
    // getNumberOfRows (points)
    // getNumberOfColumns (x,y,z,v,t,t1,t2...)
    // getDistinctValues (unique values?)
    // getColumnRange

    // determine the location of x,y,z,value,filter columns
    this.colX = 'x';
    this.colY = 'y';
    this.colZ = 'z';
    this.colValue = 'style';
    this.colFilter = 'filter';

    // check if a filter column is provided
    if (data[0].hasOwnProperty('filter')) {
      if (this.dataFilter === undefined) {
        this.dataFilter = new Filter(rawData, this.colFilter, this);
        this.dataFilter.setOnLoadCallback(function () {
          me.redraw();
        });
      }
    }

    var withBars = this.style == Graph3d.STYLE.BAR || this.style == Graph3d.STYLE.BARCOLOR || this.style == Graph3d.STYLE.BARSIZE;

    // determine barWidth from data
    if (withBars) {
      if (this.defaultXBarWidth !== undefined) {
        this.xBarWidth = this.defaultXBarWidth;
      } else {
        var dataX = this.getDistinctValues(data, this.colX);
        this.xBarWidth = dataX[1] - dataX[0] || 1;
      }

      if (this.defaultYBarWidth !== undefined) {
        this.yBarWidth = this.defaultYBarWidth;
      } else {
        var dataY = this.getDistinctValues(data, this.colY);
        this.yBarWidth = dataY[1] - dataY[0] || 1;
      }
    }

    // calculate minimums and maximums
    var xRange = this.getColumnRange(data, this.colX);
    if (withBars) {
      xRange.min -= this.xBarWidth / 2;
      xRange.max += this.xBarWidth / 2;
    }
    this.xMin = this.defaultXMin !== undefined ? this.defaultXMin : xRange.min;
    this.xMax = this.defaultXMax !== undefined ? this.defaultXMax : xRange.max;
    if (this.xMax <= this.xMin) this.xMax = this.xMin + 1;
    this.xStep = this.defaultXStep !== undefined ? this.defaultXStep : (this.xMax - this.xMin) / 5;

    var yRange = this.getColumnRange(data, this.colY);
    if (withBars) {
      yRange.min -= this.yBarWidth / 2;
      yRange.max += this.yBarWidth / 2;
    }
    this.yMin = this.defaultYMin !== undefined ? this.defaultYMin : yRange.min;
    this.yMax = this.defaultYMax !== undefined ? this.defaultYMax : yRange.max;
    if (this.yMax <= this.yMin) this.yMax = this.yMin + 1;
    this.yStep = this.defaultYStep !== undefined ? this.defaultYStep : (this.yMax - this.yMin) / 5;

    var zRange = this.getColumnRange(data, this.colZ);
    this.zMin = this.defaultZMin !== undefined ? this.defaultZMin : zRange.min;
    this.zMax = this.defaultZMax !== undefined ? this.defaultZMax : zRange.max;
    if (this.zMax <= this.zMin) this.zMax = this.zMin + 1;
    this.zStep = this.defaultZStep !== undefined ? this.defaultZStep : (this.zMax - this.zMin) / 5;

    if (this.colValue !== undefined) {
      var valueRange = this.getColumnRange(data, this.colValue);
      this.valueMin = this.defaultValueMin !== undefined ? this.defaultValueMin : valueRange.min;
      this.valueMax = this.defaultValueMax !== undefined ? this.defaultValueMax : valueRange.max;
      if (this.valueMax <= this.valueMin) this.valueMax = this.valueMin + 1;
    }

    // set the scale dependent on the ranges.
    this._setScale();
  };

  /**
   * Filter the data based on the current filter
   * @param {Array} data
   * @return {Array} dataPoints   Array with point objects which can be drawn on screen
   */
  Graph3d.prototype._getDataPoints = function (data) {
    // TODO: store the created matrix dataPoints in the filters instead of reloading each time
    var x, y, i, z, obj, point;

    var dataPoints = [];

    if (this.style === Graph3d.STYLE.GRID || this.style === Graph3d.STYLE.SURFACE) {
      // copy all values from the google data table to a matrix
      // the provided values are supposed to form a grid of (x,y) positions

      // create two lists with all present x and y values
      var dataX = [];
      var dataY = [];
      for (i = 0; i < this.getNumberOfRows(data); i++) {
        x = data[i][this.colX] || 0;
        y = data[i][this.colY] || 0;

        if (dataX.indexOf(x) === -1) {
          dataX.push(x);
        }
        if (dataY.indexOf(y) === -1) {
          dataY.push(y);
        }
      }

      var sortNumber = function sortNumber(a, b) {
        return a - b;
      };
      dataX.sort(sortNumber);
      dataY.sort(sortNumber);

      // create a grid, a 2d matrix, with all values.
      var dataMatrix = []; // temporary data matrix
      for (i = 0; i < data.length; i++) {
        x = data[i][this.colX] || 0;
        y = data[i][this.colY] || 0;
        z = data[i][this.colZ] || 0;

        var xIndex = dataX.indexOf(x); // TODO: implement Array().indexOf() for Internet Explorer
        var yIndex = dataY.indexOf(y);

        if (dataMatrix[xIndex] === undefined) {
          dataMatrix[xIndex] = [];
        }

        var point3d = new Point3d();
        point3d.x = x;
        point3d.y = y;
        point3d.z = z;

        obj = {};
        obj.point = point3d;
        obj.trans = undefined;
        obj.screen = undefined;
        obj.bottom = new Point3d(x, y, this.zMin);

        dataMatrix[xIndex][yIndex] = obj;

        dataPoints.push(obj);
      }

      // fill in the pointers to the neighbors.
      for (x = 0; x < dataMatrix.length; x++) {
        for (y = 0; y < dataMatrix[x].length; y++) {
          if (dataMatrix[x][y]) {
            dataMatrix[x][y].pointRight = x < dataMatrix.length - 1 ? dataMatrix[x + 1][y] : undefined;
            dataMatrix[x][y].pointTop = y < dataMatrix[x].length - 1 ? dataMatrix[x][y + 1] : undefined;
            dataMatrix[x][y].pointCross = x < dataMatrix.length - 1 && y < dataMatrix[x].length - 1 ? dataMatrix[x + 1][y + 1] : undefined;
          }
        }
      }
    } else {
      // 'dot', 'dot-line', etc.
      // copy all values from the google data table to a list with Point3d objects
      for (i = 0; i < data.length; i++) {
        point = new Point3d();
        point.x = data[i][this.colX] || 0;
        point.y = data[i][this.colY] || 0;
        point.z = data[i][this.colZ] || 0;

        if (this.colValue !== undefined) {
          point.value = data[i][this.colValue] || 0;
        }

        obj = {};
        obj.point = point;
        obj.bottom = new Point3d(point.x, point.y, this.zMin);
        obj.trans = undefined;
        obj.screen = undefined;

        dataPoints.push(obj);
      }
    }

    return dataPoints;
  };

  /**
   * Create the main frame for the Graph3d.
   * This function is executed once when a Graph3d object is created. The frame
   * contains a canvas, and this canvas contains all objects like the axis and
   * nodes.
   */
  Graph3d.prototype.create = function () {
    // remove all elements from the container element.
    while (this.containerElement.hasChildNodes()) {
      this.containerElement.removeChild(this.containerElement.firstChild);
    }

    this.frame = document.createElement('div');
    this.frame.style.position = 'relative';
    this.frame.style.overflow = 'hidden';

    // create the graph canvas (HTML canvas element)
    this.frame.canvas = document.createElement('canvas');
    this.frame.canvas.style.position = 'relative';
    this.frame.appendChild(this.frame.canvas);
    //if (!this.frame.canvas.getContext) {
    {
      var noCanvas = document.createElement('DIV');
      noCanvas.style.color = 'red';
      noCanvas.style.fontWeight = 'bold';
      noCanvas.style.padding = '10px';
      noCanvas.innerHTML = 'Error: your browser does not support HTML canvas';
      this.frame.canvas.appendChild(noCanvas);
    }

    this.frame.filter = document.createElement('div');
    this.frame.filter.style.position = 'absolute';
    this.frame.filter.style.bottom = '0px';
    this.frame.filter.style.left = '0px';
    this.frame.filter.style.width = '100%';
    this.frame.appendChild(this.frame.filter);

    // add event listeners to handle moving and zooming the contents
    var me = this;
    var onmousedown = function onmousedown(event) {
      me._onMouseDown(event);
    };
    var ontouchstart = function ontouchstart(event) {
      me._onTouchStart(event);
    };
    var onmousewheel = function onmousewheel(event) {
      me._onWheel(event);
    };
    var ontooltip = function ontooltip(event) {
      me._onTooltip(event);
    };
    // TODO: these events are never cleaned up... can give a 'memory leakage'

    util.addEventListener(this.frame.canvas, 'keydown', onkeydown);
    util.addEventListener(this.frame.canvas, 'mousedown', onmousedown);
    util.addEventListener(this.frame.canvas, 'touchstart', ontouchstart);
    util.addEventListener(this.frame.canvas, 'mousewheel', onmousewheel);
    util.addEventListener(this.frame.canvas, 'mousemove', ontooltip);

    // add the new graph to the container element
    this.containerElement.appendChild(this.frame);
  };

  /**
   * Set a new size for the graph
   * @param {string} width   Width in pixels or percentage (for example '800px'
   *             or '50%')
   * @param {string} height  Height in pixels or percentage  (for example '400px'
   *             or '30%')
   */
  Graph3d.prototype.setSize = function (width, height) {
    this.frame.style.width = width;
    this.frame.style.height = height;

    this._resizeCanvas();
  };

  /**
   * Resize the canvas to the current size of the frame
   */
  Graph3d.prototype._resizeCanvas = function () {
    this.frame.canvas.style.width = '100%';
    this.frame.canvas.style.height = '100%';

    this.frame.canvas.width = this.frame.canvas.clientWidth;
    this.frame.canvas.height = this.frame.canvas.clientHeight;

    // adjust with for margin
    this.frame.filter.style.width = this.frame.canvas.clientWidth - 2 * 10 + 'px';
  };

  /**
   * Start animation
   */
  Graph3d.prototype.animationStart = function () {
    if (!this.frame.filter || !this.frame.filter.slider) throw 'No animation available';

    this.frame.filter.slider.play();
  };

  /**
   * Stop animation
   */
  Graph3d.prototype.animationStop = function () {
    if (!this.frame.filter || !this.frame.filter.slider) return;

    this.frame.filter.slider.stop();
  };

  /**
   * Resize the center position based on the current values in this.defaultXCenter
   * and this.defaultYCenter (which are strings with a percentage or a value
   * in pixels). The center positions are the variables this.xCenter
   * and this.yCenter
   */
  Graph3d.prototype._resizeCenter = function () {
    // calculate the horizontal center position
    if (this.defaultXCenter.charAt(this.defaultXCenter.length - 1) === '%') {
      this.xcenter = parseFloat(this.defaultXCenter) / 100 * this.frame.canvas.clientWidth;
    } else {
      this.xcenter = parseFloat(this.defaultXCenter); // supposed to be in px
    }

    // calculate the vertical center position
    if (this.defaultYCenter.charAt(this.defaultYCenter.length - 1) === '%') {
      this.ycenter = parseFloat(this.defaultYCenter) / 100 * (this.frame.canvas.clientHeight - this.frame.filter.clientHeight);
    } else {
      this.ycenter = parseFloat(this.defaultYCenter); // supposed to be in px
    }
  };

  /**
   * Set the rotation and distance of the camera
   * @param {Object} pos   An object with the camera position. The object
   *             contains three parameters:
   *             - horizontal {Number}
   *             The horizontal rotation, between 0 and 2*PI.
   *             Optional, can be left undefined.
   *             - vertical {Number}
   *             The vertical rotation, between 0 and 0.5*PI
   *             if vertical=0.5*PI, the graph is shown from the
   *             top. Optional, can be left undefined.
   *             - distance {Number}
   *             The (normalized) distance of the camera to the
   *             center of the graph, a value between 0.71 and 5.0.
   *             Optional, can be left undefined.
   */
  Graph3d.prototype.setCameraPosition = function (pos) {
    if (pos === undefined) {
      return;
    }

    if (pos.horizontal !== undefined && pos.vertical !== undefined) {
      this.camera.setArmRotation(pos.horizontal, pos.vertical);
    }

    if (pos.distance !== undefined) {
      this.camera.setArmLength(pos.distance);
    }

    this.redraw();
  };

  /**
   * Retrieve the current camera rotation
   * @return {object}   An object with parameters horizontal, vertical, and
   *          distance
   */
  Graph3d.prototype.getCameraPosition = function () {
    var pos = this.camera.getArmRotation();
    pos.distance = this.camera.getArmLength();
    return pos;
  };

  /**
   * Load data into the 3D Graph
   */
  Graph3d.prototype._readData = function (data) {
    // read the data
    this._dataInitialize(data, this.style);

    if (this.dataFilter) {
      // apply filtering
      this.dataPoints = this.dataFilter._getDataPoints();
    } else {
      // no filtering. load all data
      this.dataPoints = this._getDataPoints(this.dataTable);
    }

    // draw the filter
    this._redrawFilter();
  };

  /**
   * Replace the dataset of the Graph3d
   * @param {Array | DataSet | DataView} data
   */
  Graph3d.prototype.setData = function (data) {
    this._readData(data);
    this.redraw();

    // start animation when option is true
    if (this.animationAutoStart && this.dataFilter) {
      this.animationStart();
    }
  };

  /**
   * Update the options. Options will be merged with current options
   * @param {Object} options
   */
  Graph3d.prototype.setOptions = function (options) {
    var cameraPosition = undefined;

    this.animationStop();

    if (options !== undefined) {
      // retrieve parameter values
      if (options.width !== undefined) this.width = options.width;
      if (options.height !== undefined) this.height = options.height;

      if (options.xCenter !== undefined) this.defaultXCenter = options.xCenter;
      if (options.yCenter !== undefined) this.defaultYCenter = options.yCenter;

      if (options.filterLabel !== undefined) this.filterLabel = options.filterLabel;
      if (options.legendLabel !== undefined) this.legendLabel = options.legendLabel;
      if (options.xLabel !== undefined) this.xLabel = options.xLabel;
      if (options.yLabel !== undefined) this.yLabel = options.yLabel;
      if (options.zLabel !== undefined) this.zLabel = options.zLabel;

      if (options.xValueLabel !== undefined) this.xValueLabel = options.xValueLabel;
      if (options.yValueLabel !== undefined) this.yValueLabel = options.yValueLabel;
      if (options.zValueLabel !== undefined) this.zValueLabel = options.zValueLabel;

      if (options.dotSizeRatio !== undefined) this.dotSizeRatio = options.dotSizeRatio;

      if (options.style !== undefined) {
        var styleNumber = this._getStyleNumber(options.style);
        if (styleNumber !== -1) {
          this.style = styleNumber;
        }
      }
      if (options.showGrid !== undefined) this.showGrid = options.showGrid;
      if (options.showPerspective !== undefined) this.showPerspective = options.showPerspective;
      if (options.showShadow !== undefined) this.showShadow = options.showShadow;
      if (options.tooltip !== undefined) this.showTooltip = options.tooltip;
      if (options.showAnimationControls !== undefined) this.showAnimationControls = options.showAnimationControls;
      if (options.keepAspectRatio !== undefined) this.keepAspectRatio = options.keepAspectRatio;
      if (options.verticalRatio !== undefined) this.verticalRatio = options.verticalRatio;

      if (options.animationInterval !== undefined) this.animationInterval = options.animationInterval;
      if (options.animationPreload !== undefined) this.animationPreload = options.animationPreload;
      if (options.animationAutoStart !== undefined) this.animationAutoStart = options.animationAutoStart;

      if (options.xBarWidth !== undefined) this.defaultXBarWidth = options.xBarWidth;
      if (options.yBarWidth !== undefined) this.defaultYBarWidth = options.yBarWidth;

      if (options.xMin !== undefined) this.defaultXMin = options.xMin;
      if (options.xStep !== undefined) this.defaultXStep = options.xStep;
      if (options.xMax !== undefined) this.defaultXMax = options.xMax;
      if (options.yMin !== undefined) this.defaultYMin = options.yMin;
      if (options.yStep !== undefined) this.defaultYStep = options.yStep;
      if (options.yMax !== undefined) this.defaultYMax = options.yMax;
      if (options.zMin !== undefined) this.defaultZMin = options.zMin;
      if (options.zStep !== undefined) this.defaultZStep = options.zStep;
      if (options.zMax !== undefined) this.defaultZMax = options.zMax;
      if (options.valueMin !== undefined) this.defaultValueMin = options.valueMin;
      if (options.valueMax !== undefined) this.defaultValueMax = options.valueMax;
      if (options.backgroundColor !== undefined) this._setBackgroundColor(options.backgroundColor);

      if (options.cameraPosition !== undefined) cameraPosition = options.cameraPosition;

      if (cameraPosition !== undefined) {
        this.camera.setArmRotation(cameraPosition.horizontal, cameraPosition.vertical);
        this.camera.setArmLength(cameraPosition.distance);
      }

      // colors
      if (options.axisColor !== undefined) this.axisColor = options.axisColor;
      if (options.gridColor !== undefined) this.gridColor = options.gridColor;
      if (options.dataColor) {
        if (typeof options.dataColor === 'string') {
          this.dataColor.fill = options.dataColor;
          this.dataColor.stroke = options.dataColor;
        } else {
          if (options.dataColor.fill) {
            this.dataColor.fill = options.dataColor.fill;
          }
          if (options.dataColor.stroke) {
            this.dataColor.stroke = options.dataColor.stroke;
          }
          if (options.dataColor.strokeWidth !== undefined) {
            this.dataColor.strokeWidth = options.dataColor.strokeWidth;
          }
        }
      }
    }

    this.setSize(this.width, this.height);

    // re-load the data
    if (this.dataTable) {
      this.setData(this.dataTable);
    }

    // start animation when option is true
    if (this.animationAutoStart && this.dataFilter) {
      this.animationStart();
    }
  };

  /**
   * Redraw the Graph.
   */
  Graph3d.prototype.redraw = function () {
    if (this.dataPoints === undefined) {
      throw 'Error: graph data not initialized';
    }

    this._resizeCanvas();
    this._resizeCenter();
    this._redrawSlider();
    this._redrawClear();
    this._redrawAxis();

    if (this.style === Graph3d.STYLE.GRID || this.style === Graph3d.STYLE.SURFACE) {
      this._redrawDataGrid();
    } else if (this.style === Graph3d.STYLE.LINE) {
      this._redrawDataLine();
    } else if (this.style === Graph3d.STYLE.BAR || this.style === Graph3d.STYLE.BARCOLOR || this.style === Graph3d.STYLE.BARSIZE) {
      this._redrawDataBar();
    } else {
      // style is DOT, DOTLINE, DOTCOLOR, DOTSIZE
      this._redrawDataDot();
    }

    this._redrawInfo();
    this._redrawLegend();
  };

  /**
   * Clear the canvas before redrawing
   */
  Graph3d.prototype._redrawClear = function () {
    var canvas = this.frame.canvas;
    var ctx = canvas.getContext('2d');

    ctx.clearRect(0, 0, canvas.width, canvas.height);
  };

  /**
   * Redraw the legend showing the colors
   */
  Graph3d.prototype._redrawLegend = function () {
    var y;

    if (this.style === Graph3d.STYLE.DOTCOLOR || this.style === Graph3d.STYLE.DOTSIZE) {

      var dotSize = this.frame.clientWidth * this.dotSizeRatio;

      var widthMin, widthMax;
      if (this.style === Graph3d.STYLE.DOTSIZE) {
        widthMin = dotSize / 2; // px
        widthMax = dotSize / 2 + dotSize * 2; // Todo: put this in one function
      } else {
          widthMin = 20; // px
          widthMax = 20; // px
        }

      var height = Math.max(this.frame.clientHeight * 0.25, 100);
      var top = this.margin;
      var right = this.frame.clientWidth - this.margin;
      var left = right - widthMax;
      var bottom = top + height;
    }

    var canvas = this.frame.canvas;
    var ctx = canvas.getContext('2d');
    ctx.lineWidth = 1;
    ctx.font = '14px arial'; // TODO: put in options

    if (this.style === Graph3d.STYLE.DOTCOLOR) {
      // draw the color bar
      var ymin = 0;
      var ymax = height; // Todo: make height customizable
      for (y = ymin; y < ymax; y++) {
        var f = (y - ymin) / (ymax - ymin);

        //var width = (dotSize / 2 + (1-f) * dotSize * 2); // Todo: put this in one function
        var hue = f * 240;
        var color = this._hsv2rgb(hue, 1, 1);

        ctx.strokeStyle = color;
        ctx.beginPath();
        ctx.moveTo(left, top + y);
        ctx.lineTo(right, top + y);
        ctx.stroke();
      }

      ctx.strokeStyle = this.axisColor;
      ctx.strokeRect(left, top, widthMax, height);
    }

    if (this.style === Graph3d.STYLE.DOTSIZE) {
      // draw border around color bar
      ctx.strokeStyle = this.axisColor;
      ctx.fillStyle = this.dataColor.fill;
      ctx.beginPath();
      ctx.moveTo(left, top);
      ctx.lineTo(right, top);
      ctx.lineTo(right - widthMax + widthMin, bottom);
      ctx.lineTo(left, bottom);
      ctx.closePath();
      ctx.fill();
      ctx.stroke();
    }

    if (this.style === Graph3d.STYLE.DOTCOLOR || this.style === Graph3d.STYLE.DOTSIZE) {
      // print values along the color bar
      var gridLineLen = 5; // px
      var step = new StepNumber(this.valueMin, this.valueMax, (this.valueMax - this.valueMin) / 5, true);
      step.start();
      if (step.getCurrent() < this.valueMin) {
        step.next();
      }
      while (!step.end()) {
        y = bottom - (step.getCurrent() - this.valueMin) / (this.valueMax - this.valueMin) * height;

        ctx.beginPath();
        ctx.moveTo(left - gridLineLen, y);
        ctx.lineTo(left, y);
        ctx.stroke();

        ctx.textAlign = 'right';
        ctx.textBaseline = 'middle';
        ctx.fillStyle = this.axisColor;
        ctx.fillText(step.getCurrent(), left - 2 * gridLineLen, y);

        step.next();
      }

      ctx.textAlign = 'right';
      ctx.textBaseline = 'top';
      var label = this.legendLabel;
      ctx.fillText(label, right, bottom + this.margin);
    }
  };

  /**
   * Redraw the filter
   */
  Graph3d.prototype._redrawFilter = function () {
    this.frame.filter.innerHTML = '';

    if (this.dataFilter) {
      var options = {
        'visible': this.showAnimationControls
      };
      var slider = new Slider(this.frame.filter, options);
      this.frame.filter.slider = slider;

      // TODO: css here is not nice here...
      this.frame.filter.style.padding = '10px';
      //this.frame.filter.style.backgroundColor = '#EFEFEF';

      slider.setValues(this.dataFilter.values);
      slider.setPlayInterval(this.animationInterval);

      // create an event handler
      var me = this;
      var onchange = function onchange() {
        var index = slider.getIndex();

        me.dataFilter.selectValue(index);
        me.dataPoints = me.dataFilter._getDataPoints();

        me.redraw();
      };
      slider.setOnChangeCallback(onchange);
    } else {
      this.frame.filter.slider = undefined;
    }
  };

  /**
   * Redraw the slider
   */
  Graph3d.prototype._redrawSlider = function () {
    if (this.frame.filter.slider !== undefined) {
      this.frame.filter.slider.redraw();
    }
  };

  /**
   * Redraw common information
   */
  Graph3d.prototype._redrawInfo = function () {
    if (this.dataFilter) {
      var canvas = this.frame.canvas;
      var ctx = canvas.getContext('2d');

      ctx.font = '14px arial'; // TODO: put in options
      ctx.lineStyle = 'gray';
      ctx.fillStyle = 'gray';
      ctx.textAlign = 'left';
      ctx.textBaseline = 'top';

      var x = this.margin;
      var y = this.margin;
      ctx.fillText(this.dataFilter.getLabel() + ': ' + this.dataFilter.getSelectedValue(), x, y);
    }
  };

  /**
   * Redraw the axis
   */
  Graph3d.prototype._redrawAxis = function () {
    var canvas = this.frame.canvas,
        ctx = canvas.getContext('2d'),
        from,
        to,
        step,
        prettyStep,
        text,
        xText,
        yText,
        zText,
        offset,
        xOffset,
        yOffset,
        xMin2d,
        xMax2d;

    // TODO: get the actual rendered style of the containerElement
    //ctx.font = this.containerElement.style.font;
    ctx.font = 24 / this.camera.getArmLength() + 'px arial';

    // calculate the length for the short grid lines
    var gridLenX = 0.025 / this.scale.x;
    var gridLenY = 0.025 / this.scale.y;
    var textMargin = 5 / this.camera.getArmLength(); // px
    var armAngle = this.camera.getArmRotation().horizontal;

    // draw x-grid lines
    ctx.lineWidth = 1;
    prettyStep = this.defaultXStep === undefined;
    step = new StepNumber(this.xMin, this.xMax, this.xStep, prettyStep);
    step.start();
    if (step.getCurrent() < this.xMin) {
      step.next();
    }
    while (!step.end()) {
      var x = step.getCurrent();

      if (this.showGrid) {
        from = this._convert3Dto2D(new Point3d(x, this.yMin, this.zMin));
        to = this._convert3Dto2D(new Point3d(x, this.yMax, this.zMin));
        ctx.strokeStyle = this.gridColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(to.x, to.y);
        ctx.stroke();
      } else {
        from = this._convert3Dto2D(new Point3d(x, this.yMin, this.zMin));
        to = this._convert3Dto2D(new Point3d(x, this.yMin + gridLenX, this.zMin));
        ctx.strokeStyle = this.axisColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(to.x, to.y);
        ctx.stroke();

        from = this._convert3Dto2D(new Point3d(x, this.yMax, this.zMin));
        to = this._convert3Dto2D(new Point3d(x, this.yMax - gridLenX, this.zMin));
        ctx.strokeStyle = this.axisColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(to.x, to.y);
        ctx.stroke();
      }

      yText = Math.cos(armAngle) > 0 ? this.yMin : this.yMax;
      text = this._convert3Dto2D(new Point3d(x, yText, this.zMin));
      if (Math.cos(armAngle * 2) > 0) {
        ctx.textAlign = 'center';
        ctx.textBaseline = 'top';
        text.y += textMargin;
      } else if (Math.sin(armAngle * 2) < 0) {
        ctx.textAlign = 'right';
        ctx.textBaseline = 'middle';
      } else {
        ctx.textAlign = 'left';
        ctx.textBaseline = 'middle';
      }
      ctx.fillStyle = this.axisColor;
      ctx.fillText('  ' + this.xValueLabel(step.getCurrent()) + '  ', text.x, text.y);

      step.next();
    }

    // draw y-grid lines
    ctx.lineWidth = 1;
    prettyStep = this.defaultYStep === undefined;
    step = new StepNumber(this.yMin, this.yMax, this.yStep, prettyStep);
    step.start();
    if (step.getCurrent() < this.yMin) {
      step.next();
    }
    while (!step.end()) {
      if (this.showGrid) {
        from = this._convert3Dto2D(new Point3d(this.xMin, step.getCurrent(), this.zMin));
        to = this._convert3Dto2D(new Point3d(this.xMax, step.getCurrent(), this.zMin));
        ctx.strokeStyle = this.gridColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(to.x, to.y);
        ctx.stroke();
      } else {
        from = this._convert3Dto2D(new Point3d(this.xMin, step.getCurrent(), this.zMin));
        to = this._convert3Dto2D(new Point3d(this.xMin + gridLenY, step.getCurrent(), this.zMin));
        ctx.strokeStyle = this.axisColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(to.x, to.y);
        ctx.stroke();

        from = this._convert3Dto2D(new Point3d(this.xMax, step.getCurrent(), this.zMin));
        to = this._convert3Dto2D(new Point3d(this.xMax - gridLenY, step.getCurrent(), this.zMin));
        ctx.strokeStyle = this.axisColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(to.x, to.y);
        ctx.stroke();
      }

      xText = Math.sin(armAngle) > 0 ? this.xMin : this.xMax;
      text = this._convert3Dto2D(new Point3d(xText, step.getCurrent(), this.zMin));
      if (Math.cos(armAngle * 2) < 0) {
        ctx.textAlign = 'center';
        ctx.textBaseline = 'top';
        text.y += textMargin;
      } else if (Math.sin(armAngle * 2) > 0) {
        ctx.textAlign = 'right';
        ctx.textBaseline = 'middle';
      } else {
        ctx.textAlign = 'left';
        ctx.textBaseline = 'middle';
      }
      ctx.fillStyle = this.axisColor;
      ctx.fillText('  ' + this.yValueLabel(step.getCurrent()) + '  ', text.x, text.y);

      step.next();
    }

    // draw z-grid lines and axis
    ctx.lineWidth = 1;
    prettyStep = this.defaultZStep === undefined;
    step = new StepNumber(this.zMin, this.zMax, this.zStep, prettyStep);
    step.start();
    if (step.getCurrent() < this.zMin) {
      step.next();
    }
    xText = Math.cos(armAngle) > 0 ? this.xMin : this.xMax;
    yText = Math.sin(armAngle) < 0 ? this.yMin : this.yMax;
    while (!step.end()) {
      // TODO: make z-grid lines really 3d?
      from = this._convert3Dto2D(new Point3d(xText, yText, step.getCurrent()));
      ctx.strokeStyle = this.axisColor;
      ctx.beginPath();
      ctx.moveTo(from.x, from.y);
      ctx.lineTo(from.x - textMargin, from.y);
      ctx.stroke();

      ctx.textAlign = 'right';
      ctx.textBaseline = 'middle';
      ctx.fillStyle = this.axisColor;
      ctx.fillText(this.zValueLabel(step.getCurrent()) + ' ', from.x - 5, from.y);

      step.next();
    }
    ctx.lineWidth = 1;
    from = this._convert3Dto2D(new Point3d(xText, yText, this.zMin));
    to = this._convert3Dto2D(new Point3d(xText, yText, this.zMax));
    ctx.strokeStyle = this.axisColor;
    ctx.beginPath();
    ctx.moveTo(from.x, from.y);
    ctx.lineTo(to.x, to.y);
    ctx.stroke();

    // draw x-axis
    ctx.lineWidth = 1;
    // line at yMin
    xMin2d = this._convert3Dto2D(new Point3d(this.xMin, this.yMin, this.zMin));
    xMax2d = this._convert3Dto2D(new Point3d(this.xMax, this.yMin, this.zMin));
    ctx.strokeStyle = this.axisColor;
    ctx.beginPath();
    ctx.moveTo(xMin2d.x, xMin2d.y);
    ctx.lineTo(xMax2d.x, xMax2d.y);
    ctx.stroke();
    // line at ymax
    xMin2d = this._convert3Dto2D(new Point3d(this.xMin, this.yMax, this.zMin));
    xMax2d = this._convert3Dto2D(new Point3d(this.xMax, this.yMax, this.zMin));
    ctx.strokeStyle = this.axisColor;
    ctx.beginPath();
    ctx.moveTo(xMin2d.x, xMin2d.y);
    ctx.lineTo(xMax2d.x, xMax2d.y);
    ctx.stroke();

    // draw y-axis
    ctx.lineWidth = 1;
    // line at xMin
    from = this._convert3Dto2D(new Point3d(this.xMin, this.yMin, this.zMin));
    to = this._convert3Dto2D(new Point3d(this.xMin, this.yMax, this.zMin));
    ctx.strokeStyle = this.axisColor;
    ctx.beginPath();
    ctx.moveTo(from.x, from.y);
    ctx.lineTo(to.x, to.y);
    ctx.stroke();
    // line at xMax
    from = this._convert3Dto2D(new Point3d(this.xMax, this.yMin, this.zMin));
    to = this._convert3Dto2D(new Point3d(this.xMax, this.yMax, this.zMin));
    ctx.strokeStyle = this.axisColor;
    ctx.beginPath();
    ctx.moveTo(from.x, from.y);
    ctx.lineTo(to.x, to.y);
    ctx.stroke();

    // draw x-label
    var xLabel = this.xLabel;
    if (xLabel.length > 0) {
      yOffset = 0.1 / this.scale.y;
      xText = (this.xMin + this.xMax) / 2;
      yText = Math.cos(armAngle) > 0 ? this.yMin - yOffset : this.yMax + yOffset;
      text = this._convert3Dto2D(new Point3d(xText, yText, this.zMin));
      if (Math.cos(armAngle * 2) > 0) {
        ctx.textAlign = 'center';
        ctx.textBaseline = 'top';
      } else if (Math.sin(armAngle * 2) < 0) {
        ctx.textAlign = 'right';
        ctx.textBaseline = 'middle';
      } else {
        ctx.textAlign = 'left';
        ctx.textBaseline = 'middle';
      }
      ctx.fillStyle = this.axisColor;
      ctx.fillText(xLabel, text.x, text.y);
    }

    // draw y-label
    var yLabel = this.yLabel;
    if (yLabel.length > 0) {
      xOffset = 0.1 / this.scale.x;
      xText = Math.sin(armAngle) > 0 ? this.xMin - xOffset : this.xMax + xOffset;
      yText = (this.yMin + this.yMax) / 2;
      text = this._convert3Dto2D(new Point3d(xText, yText, this.zMin));
      if (Math.cos(armAngle * 2) < 0) {
        ctx.textAlign = 'center';
        ctx.textBaseline = 'top';
      } else if (Math.sin(armAngle * 2) > 0) {
        ctx.textAlign = 'right';
        ctx.textBaseline = 'middle';
      } else {
        ctx.textAlign = 'left';
        ctx.textBaseline = 'middle';
      }
      ctx.fillStyle = this.axisColor;
      ctx.fillText(yLabel, text.x, text.y);
    }

    // draw z-label
    var zLabel = this.zLabel;
    if (zLabel.length > 0) {
      offset = 30; // pixels.  // TODO: relate to the max width of the values on the z axis?
      xText = Math.cos(armAngle) > 0 ? this.xMin : this.xMax;
      yText = Math.sin(armAngle) < 0 ? this.yMin : this.yMax;
      zText = (this.zMin + this.zMax) / 2;
      text = this._convert3Dto2D(new Point3d(xText, yText, zText));
      ctx.textAlign = 'right';
      ctx.textBaseline = 'middle';
      ctx.fillStyle = this.axisColor;
      ctx.fillText(zLabel, text.x - offset, text.y);
    }
  };

  /**
   * Calculate the color based on the given value.
   * @param {Number} H   Hue, a value be between 0 and 360
   * @param {Number} S   Saturation, a value between 0 and 1
   * @param {Number} V   Value, a value between 0 and 1
   */
  Graph3d.prototype._hsv2rgb = function (H, S, V) {
    var R, G, B, C, Hi, X;

    C = V * S;
    Hi = Math.floor(H / 60); // hi = 0,1,2,3,4,5
    X = C * (1 - Math.abs(H / 60 % 2 - 1));

    switch (Hi) {
      case 0:
        R = C;G = X;B = 0;break;
      case 1:
        R = X;G = C;B = 0;break;
      case 2:
        R = 0;G = C;B = X;break;
      case 3:
        R = 0;G = X;B = C;break;
      case 4:
        R = X;G = 0;B = C;break;
      case 5:
        R = C;G = 0;B = X;break;

      default:
        R = 0;G = 0;B = 0;break;
    }

    return 'RGB(' + parseInt(R * 255) + ',' + parseInt(G * 255) + ',' + parseInt(B * 255) + ')';
  };

  /**
   * Draw all datapoints as a grid
   * This function can be used when the style is 'grid'
   */
  Graph3d.prototype._redrawDataGrid = function () {
    var canvas = this.frame.canvas,
        ctx = canvas.getContext('2d'),
        point,
        right,
        top,
        cross,
        i,
        topSideVisible,
        fillStyle,
        strokeStyle,
        lineWidth,
        h,
        s,
        v,
        zAvg;

    ctx.lineJoin = 'round';
    ctx.lineCap = 'round';

    if (this.dataPoints === undefined || this.dataPoints.length <= 0) return; // TODO: throw exception?

    // calculate the translations and screen position of all points
    for (i = 0; i < this.dataPoints.length; i++) {
      var trans = this._convertPointToTranslation(this.dataPoints[i].point);
      var screen = this._convertTranslationToScreen(trans);

      this.dataPoints[i].trans = trans;
      this.dataPoints[i].screen = screen;

      // calculate the translation of the point at the bottom (needed for sorting)
      var transBottom = this._convertPointToTranslation(this.dataPoints[i].bottom);
      this.dataPoints[i].dist = this.showPerspective ? transBottom.length() : -transBottom.z;
    }

    // sort the points on depth of their (x,y) position (not on z)
    var sortDepth = function sortDepth(a, b) {
      return b.dist - a.dist;
    };
    this.dataPoints.sort(sortDepth);

    if (this.style === Graph3d.STYLE.SURFACE) {
      for (i = 0; i < this.dataPoints.length; i++) {
        point = this.dataPoints[i];
        right = this.dataPoints[i].pointRight;
        top = this.dataPoints[i].pointTop;
        cross = this.dataPoints[i].pointCross;

        if (point !== undefined && right !== undefined && top !== undefined && cross !== undefined) {

          if (this.showGrayBottom || this.showShadow) {
            // calculate the cross product of the two vectors from center
            // to left and right, in order to know whether we are looking at the
            // bottom or at the top side. We can also use the cross product
            // for calculating light intensity
            var aDiff = Point3d.subtract(cross.trans, point.trans);
            var bDiff = Point3d.subtract(top.trans, right.trans);
            var crossproduct = Point3d.crossProduct(aDiff, bDiff);
            var len = crossproduct.length();
            // FIXME: there is a bug with determining the surface side (shadow or colored)

            topSideVisible = crossproduct.z > 0;
          } else {
            topSideVisible = true;
          }

          if (topSideVisible) {
            // calculate Hue from the current value. At zMin the hue is 240, at zMax the hue is 0
            zAvg = (point.point.z + right.point.z + top.point.z + cross.point.z) / 4;
            h = (1 - (zAvg - this.zMin) * this.scale.z / this.verticalRatio) * 240;
            s = 1; // saturation

            if (this.showShadow) {
              v = Math.min(1 + crossproduct.x / len / 2, 1); // value. TODO: scale
              fillStyle = this._hsv2rgb(h, s, v);
              strokeStyle = fillStyle;
            } else {
              v = 1;
              fillStyle = this._hsv2rgb(h, s, v);
              strokeStyle = this.axisColor; // TODO: should be customizable
            }
          } else {
              fillStyle = 'gray';
              strokeStyle = this.axisColor;
            }

          ctx.lineWidth = this._getStrokeWidth(point);
          ctx.fillStyle = fillStyle;
          ctx.strokeStyle = strokeStyle;
          ctx.beginPath();
          ctx.moveTo(point.screen.x, point.screen.y);
          ctx.lineTo(right.screen.x, right.screen.y);
          ctx.lineTo(cross.screen.x, cross.screen.y);
          ctx.lineTo(top.screen.x, top.screen.y);
          ctx.closePath();
          ctx.fill();
          ctx.stroke(); // TODO: only draw stroke when strokeWidth > 0
        }
      }
    } else {
        // grid style
        for (i = 0; i < this.dataPoints.length; i++) {
          point = this.dataPoints[i];
          right = this.dataPoints[i].pointRight;
          top = this.dataPoints[i].pointTop;

          if (point !== undefined && right !== undefined) {
            // calculate Hue from the current value. At zMin the hue is 240, at zMax the hue is 0
            zAvg = (point.point.z + right.point.z) / 2;
            h = (1 - (zAvg - this.zMin) * this.scale.z / this.verticalRatio) * 240;

            ctx.lineWidth = this._getStrokeWidth(point) * 2;
            ctx.strokeStyle = this._hsv2rgb(h, 1, 1);
            ctx.beginPath();
            ctx.moveTo(point.screen.x, point.screen.y);
            ctx.lineTo(right.screen.x, right.screen.y);
            ctx.stroke();
          }

          if (point !== undefined && top !== undefined) {
            // calculate Hue from the current value. At zMin the hue is 240, at zMax the hue is 0
            zAvg = (point.point.z + top.point.z) / 2;
            h = (1 - (zAvg - this.zMin) * this.scale.z / this.verticalRatio) * 240;

            ctx.lineWidth = this._getStrokeWidth(point) * 2;
            ctx.strokeStyle = this._hsv2rgb(h, 1, 1);
            ctx.beginPath();
            ctx.moveTo(point.screen.x, point.screen.y);
            ctx.lineTo(top.screen.x, top.screen.y);
            ctx.stroke();
          }
        }
      }
  };

  Graph3d.prototype._getStrokeWidth = function (point) {
    if (point !== undefined) {
      if (this.showPerspective) {
        return 1 / -point.trans.z * this.dataColor.strokeWidth;
      } else {
        return -(this.eye.z / this.camera.getArmLength()) * this.dataColor.strokeWidth;
      }
    }

    return this.dataColor.strokeWidth;
  };

  /**
   * Draw all datapoints as dots.
   * This function can be used when the style is 'dot' or 'dot-line'
   */
  Graph3d.prototype._redrawDataDot = function () {
    var canvas = this.frame.canvas;
    var ctx = canvas.getContext('2d');
    var i;

    if (this.dataPoints === undefined || this.dataPoints.length <= 0) return; // TODO: throw exception?

    // calculate the translations of all points
    for (i = 0; i < this.dataPoints.length; i++) {
      var trans = this._convertPointToTranslation(this.dataPoints[i].point);
      var screen = this._convertTranslationToScreen(trans);
      this.dataPoints[i].trans = trans;
      this.dataPoints[i].screen = screen;

      // calculate the distance from the point at the bottom to the camera
      var transBottom = this._convertPointToTranslation(this.dataPoints[i].bottom);
      this.dataPoints[i].dist = this.showPerspective ? transBottom.length() : -transBottom.z;
    }

    // order the translated points by depth
    var sortDepth = function sortDepth(a, b) {
      return b.dist - a.dist;
    };
    this.dataPoints.sort(sortDepth);

    // draw the datapoints as colored circles
    var dotSize = this.frame.clientWidth * this.dotSizeRatio; // px
    for (i = 0; i < this.dataPoints.length; i++) {
      var point = this.dataPoints[i];

      if (this.style === Graph3d.STYLE.DOTLINE) {
        // draw a vertical line from the bottom to the graph value
        //var from = this._convert3Dto2D(new Point3d(point.point.x, point.point.y, this.zMin));
        var from = this._convert3Dto2D(point.bottom);
        ctx.lineWidth = 1;
        ctx.strokeStyle = this.gridColor;
        ctx.beginPath();
        ctx.moveTo(from.x, from.y);
        ctx.lineTo(point.screen.x, point.screen.y);
        ctx.stroke();
      }

      // calculate radius for the circle
      var size;
      if (this.style === Graph3d.STYLE.DOTSIZE) {
        size = dotSize / 2 + 2 * dotSize * (point.point.value - this.valueMin) / (this.valueMax - this.valueMin);
      } else {
        size = dotSize;
      }

      var radius;
      if (this.showPerspective) {
        radius = size / -point.trans.z;
      } else {
        radius = size * -(this.eye.z / this.camera.getArmLength());
      }
      if (radius < 0) {
        radius = 0;
      }

      var hue, color, borderColor;
      if (this.style === Graph3d.STYLE.DOTCOLOR) {
        // calculate the color based on the value
        hue = (1 - (point.point.value - this.valueMin) * this.scale.value) * 240;
        color = this._hsv2rgb(hue, 1, 1);
        borderColor = this._hsv2rgb(hue, 1, 0.8);
      } else if (this.style === Graph3d.STYLE.DOTSIZE) {
        color = this.dataColor.fill;
        borderColor = this.dataColor.stroke;
      } else {
        // calculate Hue from the current value. At zMin the hue is 240, at zMax the hue is 0
        hue = (1 - (point.point.z - this.zMin) * this.scale.z / this.verticalRatio) * 240;
        color = this._hsv2rgb(hue, 1, 1);
        borderColor = this._hsv2rgb(hue, 1, 0.8);
      }

      // draw the circle
      ctx.lineWidth = this._getStrokeWidth(point);
      ctx.strokeStyle = borderColor;
      ctx.fillStyle = color;
      ctx.beginPath();
      ctx.arc(point.screen.x, point.screen.y, radius, 0, Math.PI * 2, true);
      ctx.fill();
      ctx.stroke();
    }
  };

  /**
   * Draw all datapoints as bars.
   * This function can be used when the style is 'bar', 'bar-color', or 'bar-size'
   */
  Graph3d.prototype._redrawDataBar = function () {
    var canvas = this.frame.canvas;
    var ctx = canvas.getContext('2d');
    var i, j, surface, corners;

    if (this.dataPoints === undefined || this.dataPoints.length <= 0) return; // TODO: throw exception?

    // calculate the translations of all points
    for (i = 0; i < this.dataPoints.length; i++) {
      var trans = this._convertPointToTranslation(this.dataPoints[i].point);
      var screen = this._convertTranslationToScreen(trans);
      this.dataPoints[i].trans = trans;
      this.dataPoints[i].screen = screen;

      // calculate the distance from the point at the bottom to the camera
      var transBottom = this._convertPointToTranslation(this.dataPoints[i].bottom);
      this.dataPoints[i].dist = this.showPerspective ? transBottom.length() : -transBottom.z;
    }

    // order the translated points by depth
    var sortDepth = function sortDepth(a, b) {
      return b.dist - a.dist;
    };
    this.dataPoints.sort(sortDepth);

    ctx.lineJoin = 'round';
    ctx.lineCap = 'round';

    // draw the datapoints as bars
    var xWidth = this.xBarWidth / 2;
    var yWidth = this.yBarWidth / 2;
    for (i = 0; i < this.dataPoints.length; i++) {
      var point = this.dataPoints[i];

      // determine color
      var hue, color, borderColor;
      if (this.style === Graph3d.STYLE.BARCOLOR) {
        // calculate the color based on the value
        hue = (1 - (point.point.value - this.valueMin) * this.scale.value) * 240;
        color = this._hsv2rgb(hue, 1, 1);
        borderColor = this._hsv2rgb(hue, 1, 0.8);
      } else if (this.style === Graph3d.STYLE.BARSIZE) {
        color = this.dataColor.fill;
        borderColor = this.dataColor.stroke;
      } else {
        // calculate Hue from the current value. At zMin the hue is 240, at zMax the hue is 0
        hue = (1 - (point.point.z - this.zMin) * this.scale.z / this.verticalRatio) * 240;
        color = this._hsv2rgb(hue, 1, 1);
        borderColor = this._hsv2rgb(hue, 1, 0.8);
      }

      // calculate size for the bar
      if (this.style === Graph3d.STYLE.BARSIZE) {
        xWidth = this.xBarWidth / 2 * ((point.point.value - this.valueMin) / (this.valueMax - this.valueMin) * 0.8 + 0.2);
        yWidth = this.yBarWidth / 2 * ((point.point.value - this.valueMin) / (this.valueMax - this.valueMin) * 0.8 + 0.2);
      }

      // calculate all corner points
      var me = this;
      var point3d = point.point;
      var top = [{ point: new Point3d(point3d.x - xWidth, point3d.y - yWidth, point3d.z) }, { point: new Point3d(point3d.x + xWidth, point3d.y - yWidth, point3d.z) }, { point: new Point3d(point3d.x + xWidth, point3d.y + yWidth, point3d.z) }, { point: new Point3d(point3d.x - xWidth, point3d.y + yWidth, point3d.z) }];
      var bottom = [{ point: new Point3d(point3d.x - xWidth, point3d.y - yWidth, this.zMin) }, { point: new Point3d(point3d.x + xWidth, point3d.y - yWidth, this.zMin) }, { point: new Point3d(point3d.x + xWidth, point3d.y + yWidth, this.zMin) }, { point: new Point3d(point3d.x - xWidth, point3d.y + yWidth, this.zMin) }];

      // calculate screen location of the points
      top.forEach(function (obj) {
        obj.screen = me._convert3Dto2D(obj.point);
      });
      bottom.forEach(function (obj) {
        obj.screen = me._convert3Dto2D(obj.point);
      });

      // create five sides, calculate both corner points and center points
      var surfaces = [{ corners: top, center: Point3d.avg(bottom[0].point, bottom[2].point) }, { corners: [top[0], top[1], bottom[1], bottom[0]], center: Point3d.avg(bottom[1].point, bottom[0].point) }, { corners: [top[1], top[2], bottom[2], bottom[1]], center: Point3d.avg(bottom[2].point, bottom[1].point) }, { corners: [top[2], top[3], bottom[3], bottom[2]], center: Point3d.avg(bottom[3].point, bottom[2].point) }, { corners: [top[3], top[0], bottom[0], bottom[3]], center: Point3d.avg(bottom[0].point, bottom[3].point) }];
      point.surfaces = surfaces;

      // calculate the distance of each of the surface centers to the camera
      for (j = 0; j < surfaces.length; j++) {
        surface = surfaces[j];
        var transCenter = this._convertPointToTranslation(surface.center);
        surface.dist = this.showPerspective ? transCenter.length() : -transCenter.z;
        // TODO: this dept calculation doesn't work 100% of the cases due to perspective,
        //     but the current solution is fast/simple and works in 99.9% of all cases
        //     the issue is visible in example 14, with graph.setCameraPosition({horizontal: 2.97, vertical: 0.5, distance: 0.9})
      }

      // order the surfaces by their (translated) depth
      surfaces.sort(function (a, b) {
        var diff = b.dist - a.dist;
        if (diff) return diff;

        // if equal depth, sort the top surface last
        if (a.corners === top) return 1;
        if (b.corners === top) return -1;

        // both are equal
        return 0;
      });

      // draw the ordered surfaces
      ctx.lineWidth = this._getStrokeWidth(point);
      ctx.strokeStyle = borderColor;
      ctx.fillStyle = color;
      // NOTE: we start at j=2 instead of j=0 as we don't need to draw the two surfaces at the backside
      for (j = 2; j < surfaces.length; j++) {
        surface = surfaces[j];
        corners = surface.corners;
        ctx.beginPath();
        ctx.moveTo(corners[3].screen.x, corners[3].screen.y);
        ctx.lineTo(corners[0].screen.x, corners[0].screen.y);
        ctx.lineTo(corners[1].screen.x, corners[1].screen.y);
        ctx.lineTo(corners[2].screen.x, corners[2].screen.y);
        ctx.lineTo(corners[3].screen.x, corners[3].screen.y);
        ctx.fill();
        ctx.stroke();
      }
    }
  };

  /**
   * Draw a line through all datapoints.
   * This function can be used when the style is 'line'
   */
  Graph3d.prototype._redrawDataLine = function () {
    var canvas = this.frame.canvas,
        ctx = canvas.getContext('2d'),
        point,
        i;

    if (this.dataPoints === undefined || this.dataPoints.length <= 0) return; // TODO: throw exception?

    // calculate the translations of all points
    for (i = 0; i < this.dataPoints.length; i++) {
      var trans = this._convertPointToTranslation(this.dataPoints[i].point);
      var screen = this._convertTranslationToScreen(trans);

      this.dataPoints[i].trans = trans;
      this.dataPoints[i].screen = screen;
    }

    // start the line
    if (this.dataPoints.length > 0) {
      point = this.dataPoints[0];

      ctx.lineWidth = this._getStrokeWidth(point);
      ctx.lineJoin = 'round';
      ctx.lineCap = 'round';
      ctx.strokeStyle = this.dataColor.stroke;
      ctx.beginPath();
      ctx.moveTo(point.screen.x, point.screen.y);

      // draw the datapoints as colored circles
      for (i = 1; i < this.dataPoints.length; i++) {
        point = this.dataPoints[i];
        ctx.lineTo(point.screen.x, point.screen.y);
      }

      // finish the line
      ctx.stroke();
    }
  };

  /**
   * Start a moving operation inside the provided parent element
   * @param {Event}     event     The event that occurred (required for
   *                  retrieving the  mouse position)
   */
  Graph3d.prototype._onMouseDown = function (event) {
    event = event || window.event;

    // check if mouse is still down (may be up when focus is lost for example
    // in an iframe)
    if (this.leftButtonDown) {
      this._onMouseUp(event);
    }

    // only react on left mouse button down
    this.leftButtonDown = event.which ? event.which === 1 : event.button === 1;
    if (!this.leftButtonDown && !this.touchDown) return;

    // get mouse position (different code for IE and all other browsers)
    this.startMouseX = getMouseX(event);
    this.startMouseY = getMouseY(event);

    this.startStart = new Date(this.start);
    this.startEnd = new Date(this.end);
    this.startArmRotation = this.camera.getArmRotation();

    this.frame.style.cursor = 'move';

    // add event listeners to handle moving the contents
    // we store the function onmousemove and onmouseup in the graph, so we can
    // remove the eventlisteners lateron in the function mouseUp()
    var me = this;
    this.onmousemove = function (event) {
      me._onMouseMove(event);
    };
    this.onmouseup = function (event) {
      me._onMouseUp(event);
    };
    util.addEventListener(document, 'mousemove', me.onmousemove);
    util.addEventListener(document, 'mouseup', me.onmouseup);
    util.preventDefault(event);
  };

  /**
   * Perform moving operating.
   * This function activated from within the funcion Graph.mouseDown().
   * @param {Event}   event  Well, eehh, the event
   */
  Graph3d.prototype._onMouseMove = function (event) {
    event = event || window.event;

    // calculate change in mouse position
    var diffX = parseFloat(getMouseX(event)) - this.startMouseX;
    var diffY = parseFloat(getMouseY(event)) - this.startMouseY;

    var horizontalNew = this.startArmRotation.horizontal + diffX / 200;
    var verticalNew = this.startArmRotation.vertical + diffY / 200;

    var snapAngle = 4; // degrees
    var snapValue = Math.sin(snapAngle / 360 * 2 * Math.PI);

    // snap horizontally to nice angles at 0pi, 0.5pi, 1pi, 1.5pi, etc...
    // the -0.001 is to take care that the vertical axis is always drawn at the left front corner
    if (Math.abs(Math.sin(horizontalNew)) < snapValue) {
      horizontalNew = Math.round(horizontalNew / Math.PI) * Math.PI - 0.001;
    }
    if (Math.abs(Math.cos(horizontalNew)) < snapValue) {
      horizontalNew = (Math.round(horizontalNew / Math.PI - 0.5) + 0.5) * Math.PI - 0.001;
    }

    // snap vertically to nice angles
    if (Math.abs(Math.sin(verticalNew)) < snapValue) {
      verticalNew = Math.round(verticalNew / Math.PI) * Math.PI;
    }
    if (Math.abs(Math.cos(verticalNew)) < snapValue) {
      verticalNew = (Math.round(verticalNew / Math.PI - 0.5) + 0.5) * Math.PI;
    }

    this.camera.setArmRotation(horizontalNew, verticalNew);
    this.redraw();

    // fire a cameraPositionChange event
    var parameters = this.getCameraPosition();
    this.emit('cameraPositionChange', parameters);

    util.preventDefault(event);
  };

  /**
   * Stop moving operating.
   * This function activated from within the funcion Graph.mouseDown().
   * @param {event}  event   The event
   */
  Graph3d.prototype._onMouseUp = function (event) {
    this.frame.style.cursor = 'auto';
    this.leftButtonDown = false;

    // remove event listeners here
    util.removeEventListener(document, 'mousemove', this.onmousemove);
    util.removeEventListener(document, 'mouseup', this.onmouseup);
    util.preventDefault(event);
  };

  /**
   * After having moved the mouse, a tooltip should pop up when the mouse is resting on a data point
   * @param {Event}  event   A mouse move event
   */
  Graph3d.prototype._onTooltip = function (event) {
    var delay = 300; // ms
    var boundingRect = this.frame.getBoundingClientRect();
    var mouseX = getMouseX(event) - boundingRect.left;
    var mouseY = getMouseY(event) - boundingRect.top;

    if (!this.showTooltip) {
      return;
    }

    if (this.tooltipTimeout) {
      clearTimeout(this.tooltipTimeout);
    }

    // (delayed) display of a tooltip only if no mouse button is down
    if (this.leftButtonDown) {
      this._hideTooltip();
      return;
    }

    if (this.tooltip && this.tooltip.dataPoint) {
      // tooltip is currently visible
      var dataPoint = this._dataPointFromXY(mouseX, mouseY);
      if (dataPoint !== this.tooltip.dataPoint) {
        // datapoint changed
        if (dataPoint) {
          this._showTooltip(dataPoint);
        } else {
          this._hideTooltip();
        }
      }
    } else {
      // tooltip is currently not visible
      var me = this;
      this.tooltipTimeout = setTimeout(function () {
        me.tooltipTimeout = null;

        // show a tooltip if we have a data point
        var dataPoint = me._dataPointFromXY(mouseX, mouseY);
        if (dataPoint) {
          me._showTooltip(dataPoint);
        }
      }, delay);
    }
  };

  /**
   * Event handler for touchstart event on mobile devices
   */
  Graph3d.prototype._onTouchStart = function (event) {
    this.touchDown = true;

    var me = this;
    this.ontouchmove = function (event) {
      me._onTouchMove(event);
    };
    this.ontouchend = function (event) {
      me._onTouchEnd(event);
    };
    util.addEventListener(document, 'touchmove', me.ontouchmove);
    util.addEventListener(document, 'touchend', me.ontouchend);

    this._onMouseDown(event);
  };

  /**
   * Event handler for touchmove event on mobile devices
   */
  Graph3d.prototype._onTouchMove = function (event) {
    this._onMouseMove(event);
  };

  /**
   * Event handler for touchend event on mobile devices
   */
  Graph3d.prototype._onTouchEnd = function (event) {
    this.touchDown = false;

    util.removeEventListener(document, 'touchmove', this.ontouchmove);
    util.removeEventListener(document, 'touchend', this.ontouchend);

    this._onMouseUp(event);
  };

  /**
   * Event handler for mouse wheel event, used to zoom the graph
   * Code from http://adomas.org/javascript-mouse-wheel/
   * @param {event}  event   The event
   */
  Graph3d.prototype._onWheel = function (event) {
    if (!event) /* For IE. */
      event = window.event;

    // retrieve delta
    var delta = 0;
    if (event.wheelDelta) {
      /* IE/Opera. */
      delta = event.wheelDelta / 120;
    } else if (event.detail) {
      /* Mozilla case. */
      // In Mozilla, sign of delta is different than in IE.
      // Also, delta is multiple of 3.
      delta = -event.detail / 3;
    }

    // If delta is nonzero, handle it.
    // Basically, delta is now positive if wheel was scrolled up,
    // and negative, if wheel was scrolled down.
    if (delta) {
      var oldLength = this.camera.getArmLength();
      var newLength = oldLength * (1 - delta / 10);

      this.camera.setArmLength(newLength);
      this.redraw();

      this._hideTooltip();
    }

    // fire a cameraPositionChange event
    var parameters = this.getCameraPosition();
    this.emit('cameraPositionChange', parameters);

    // Prevent default actions caused by mouse wheel.
    // That might be ugly, but we handle scrolls somehow
    // anyway, so don't bother here..
    util.preventDefault(event);
  };

  /**
   * Test whether a point lies inside given 2D triangle
   * @param {Point2d} point
   * @param {Point2d[]} triangle
   * @return {boolean} Returns true if given point lies inside or on the edge of the triangle
   * @private
   */
  Graph3d.prototype._insideTriangle = function (point, triangle) {
    var a = triangle[0],
        b = triangle[1],
        c = triangle[2];

    function sign(x) {
      return x > 0 ? 1 : x < 0 ? -1 : 0;
    }

    var as = sign((b.x - a.x) * (point.y - a.y) - (b.y - a.y) * (point.x - a.x));
    var bs = sign((c.x - b.x) * (point.y - b.y) - (c.y - b.y) * (point.x - b.x));
    var cs = sign((a.x - c.x) * (point.y - c.y) - (a.y - c.y) * (point.x - c.x));

    // each of the three signs must be either equal to each other or zero
    return (as == 0 || bs == 0 || as == bs) && (bs == 0 || cs == 0 || bs == cs) && (as == 0 || cs == 0 || as == cs);
  };

  /**
   * Find a data point close to given screen position (x, y)
   * @param {Number} x
   * @param {Number} y
   * @return {Object | null} The closest data point or null if not close to any data point
   * @private
   */
  Graph3d.prototype._dataPointFromXY = function (x, y) {
    var i,
        distMax = 100,
        // px
    dataPoint = null,
        closestDataPoint = null,
        closestDist = null,
        center = new Point2d(x, y);

    if (this.style === Graph3d.STYLE.BAR || this.style === Graph3d.STYLE.BARCOLOR || this.style === Graph3d.STYLE.BARSIZE) {
      // the data points are ordered from far away to closest
      for (i = this.dataPoints.length - 1; i >= 0; i--) {
        dataPoint = this.dataPoints[i];
        var surfaces = dataPoint.surfaces;
        if (surfaces) {
          for (var s = surfaces.length - 1; s >= 0; s--) {
            // split each surface in two triangles, and see if the center point is inside one of these
            var surface = surfaces[s];
            var corners = surface.corners;
            var triangle1 = [corners[0].screen, corners[1].screen, corners[2].screen];
            var triangle2 = [corners[2].screen, corners[3].screen, corners[0].screen];
            if (this._insideTriangle(center, triangle1) || this._insideTriangle(center, triangle2)) {
              // return immediately at the first hit
              return dataPoint;
            }
          }
        }
      }
    } else {
      // find the closest data point, using distance to the center of the point on 2d screen
      for (i = 0; i < this.dataPoints.length; i++) {
        dataPoint = this.dataPoints[i];
        var point = dataPoint.screen;
        if (point) {
          var distX = Math.abs(x - point.x);
          var distY = Math.abs(y - point.y);
          var dist = Math.sqrt(distX * distX + distY * distY);

          if ((closestDist === null || dist < closestDist) && dist < distMax) {
            closestDist = dist;
            closestDataPoint = dataPoint;
          }
        }
      }
    }

    return closestDataPoint;
  };

  /**
   * Display a tooltip for given data point
   * @param {Object} dataPoint
   * @private
   */
  Graph3d.prototype._showTooltip = function (dataPoint) {
    var content, line, dot;

    if (!this.tooltip) {
      content = document.createElement('div');
      content.style.position = 'absolute';
      content.style.padding = '10px';
      content.style.border = '1px solid #4d4d4d';
      content.style.color = '#1a1a1a';
      content.style.background = 'rgba(255,255,255,0.7)';
      content.style.borderRadius = '2px';
      content.style.boxShadow = '5px 5px 10px rgba(128,128,128,0.5)';

      line = document.createElement('div');
      line.style.position = 'absolute';
      line.style.height = '40px';
      line.style.width = '0';
      line.style.borderLeft = '1px solid #4d4d4d';

      dot = document.createElement('div');
      dot.style.position = 'absolute';
      dot.style.height = '0';
      dot.style.width = '0';
      dot.style.border = '5px solid #4d4d4d';
      dot.style.borderRadius = '5px';

      this.tooltip = {
        dataPoint: null,
        dom: {
          content: content,
          line: line,
          dot: dot
        }
      };
    } else {
      content = this.tooltip.dom.content;
      line = this.tooltip.dom.line;
      dot = this.tooltip.dom.dot;
    }

    this._hideTooltip();

    this.tooltip.dataPoint = dataPoint;
    if (typeof this.showTooltip === 'function') {
      content.innerHTML = this.showTooltip(dataPoint.point);
    } else {
      content.innerHTML = '<table>' + '<tr><td>x:</td><td>' + dataPoint.point.x + '</td></tr>' + '<tr><td>y:</td><td>' + dataPoint.point.y + '</td></tr>' + '<tr><td>z:</td><td>' + dataPoint.point.z + '</td></tr>' + '</table>';
    }

    content.style.left = '0';
    content.style.top = '0';
    this.frame.appendChild(content);
    this.frame.appendChild(line);
    this.frame.appendChild(dot);

    // calculate sizes
    var contentWidth = content.offsetWidth;
    var contentHeight = content.offsetHeight;
    var lineHeight = line.offsetHeight;
    var dotWidth = dot.offsetWidth;
    var dotHeight = dot.offsetHeight;

    var left = dataPoint.screen.x - contentWidth / 2;
    left = Math.min(Math.max(left, 10), this.frame.clientWidth - 10 - contentWidth);

    line.style.left = dataPoint.screen.x + 'px';
    line.style.top = dataPoint.screen.y - lineHeight + 'px';
    content.style.left = left + 'px';
    content.style.top = dataPoint.screen.y - lineHeight - contentHeight + 'px';
    dot.style.left = dataPoint.screen.x - dotWidth / 2 + 'px';
    dot.style.top = dataPoint.screen.y - dotHeight / 2 + 'px';
  };

  /**
   * Hide the tooltip when displayed
   * @private
   */
  Graph3d.prototype._hideTooltip = function () {
    if (this.tooltip) {
      this.tooltip.dataPoint = null;

      for (var prop in this.tooltip.dom) {
        if (this.tooltip.dom.hasOwnProperty(prop)) {
          var elem = this.tooltip.dom[prop];
          if (elem && elem.parentNode) {
            elem.parentNode.removeChild(elem);
          }
        }
      }
    }
  };

  /**--------------------------------------------------------------------------**/

  /**
   * Get the horizontal mouse position from a mouse event
   * @param {Event} event
   * @return {Number} mouse x
   */
  function getMouseX(event) {
    if ('clientX' in event) return event.clientX;
    return event.targetTouches[0] && event.targetTouches[0].clientX || 0;
  }

  /**
   * Get the vertical mouse position from a mouse event
   * @param {Event} event
   * @return {Number} mouse y
   */
  function getMouseY(event) {
    if ('clientY' in event) return event.clientY;
    return event.targetTouches[0] && event.targetTouches[0].clientY || 0;
  }

  module.exports = Graph3d;

/***/ },
/* 12 */
/***/ function(module, exports) {

  
  /**
   * Expose `Emitter`.
   */

  module.exports = Emitter;

  /**
   * Initialize a new `Emitter`.
   *
   * @api public
   */

  function Emitter(obj) {
    if (obj) return mixin(obj);
  };

  /**
   * Mixin the emitter properties.
   *
   * @param {Object} obj
   * @return {Object}
   * @api private
   */

  function mixin(obj) {
    for (var key in Emitter.prototype) {
      obj[key] = Emitter.prototype[key];
    }
    return obj;
  }

  /**
   * Listen on the given `event` with `fn`.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */

  Emitter.prototype.on =
  Emitter.prototype.addEventListener = function(event, fn){
    this._callbacks = this._callbacks || {};
    (this._callbacks[event] = this._callbacks[event] || [])
      .push(fn);
    return this;
  };

  /**
   * Adds an `event` listener that will be invoked a single
   * time then automatically removed.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */

  Emitter.prototype.once = function(event, fn){
    var self = this;
    this._callbacks = this._callbacks || {};

    function on() {
      self.off(event, on);
      fn.apply(this, arguments);
    }

    on.fn = fn;
    this.on(event, on);
    return this;
  };

  /**
   * Remove the given callback for `event` or all
   * registered callbacks.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */

  Emitter.prototype.off =
  Emitter.prototype.removeListener =
  Emitter.prototype.removeAllListeners =
  Emitter.prototype.removeEventListener = function(event, fn){
    this._callbacks = this._callbacks || {};

    // all
    if (0 == arguments.length) {
      this._callbacks = {};
      return this;
    }

    // specific event
    var callbacks = this._callbacks[event];
    if (!callbacks) return this;

    // remove all handlers
    if (1 == arguments.length) {
      delete this._callbacks[event];
      return this;
    }

    // remove specific handler
    var cb;
    for (var i = 0; i < callbacks.length; i++) {
      cb = callbacks[i];
      if (cb === fn || cb.fn === fn) {
        callbacks.splice(i, 1);
        break;
      }
    }
    return this;
  };

  /**
   * Emit `event` with the given args.
   *
   * @param {String} event
   * @param {Mixed} ...
   * @return {Emitter}
   */

  Emitter.prototype.emit = function(event){
    this._callbacks = this._callbacks || {};
    var args = [].slice.call(arguments, 1)
      , callbacks = this._callbacks[event];

    if (callbacks) {
      callbacks = callbacks.slice(0);
      for (var i = 0, len = callbacks.length; i < len; ++i) {
        callbacks[i].apply(this, args);
      }
    }

    return this;
  };

  /**
   * Return array of callbacks for `event`.
   *
   * @param {String} event
   * @return {Array}
   * @api public
   */

  Emitter.prototype.listeners = function(event){
    this._callbacks = this._callbacks || {};
    return this._callbacks[event] || [];
  };

  /**
   * Check if this emitter has `event` handlers.
   *
   * @param {String} event
   * @return {Boolean}
   * @api public
   */

  Emitter.prototype.hasListeners = function(event){
    return !! this.listeners(event).length;
  };


/***/ },
/* 13 */
/***/ function(module, exports) {

  /**
   * @prototype Point3d
   * @param {Number} [x]
   * @param {Number} [y]
   * @param {Number} [z]
   */
  "use strict";

  function Point3d(x, y, z) {
    this.x = x !== undefined ? x : 0;
    this.y = y !== undefined ? y : 0;
    this.z = z !== undefined ? z : 0;
  };

  /**
   * Subtract the two provided points, returns a-b
   * @param {Point3d} a
   * @param {Point3d} b
   * @return {Point3d} a-b
   */
  Point3d.subtract = function (a, b) {
    var sub = new Point3d();
    sub.x = a.x - b.x;
    sub.y = a.y - b.y;
    sub.z = a.z - b.z;
    return sub;
  };

  /**
   * Add the two provided points, returns a+b
   * @param {Point3d} a
   * @param {Point3d} b
   * @return {Point3d} a+b
   */
  Point3d.add = function (a, b) {
    var sum = new Point3d();
    sum.x = a.x + b.x;
    sum.y = a.y + b.y;
    sum.z = a.z + b.z;
    return sum;
  };

  /**
   * Calculate the average of two 3d points
   * @param {Point3d} a
   * @param {Point3d} b
   * @return {Point3d} The average, (a+b)/2
   */
  Point3d.avg = function (a, b) {
    return new Point3d((a.x + b.x) / 2, (a.y + b.y) / 2, (a.z + b.z) / 2);
  };

  /**
   * Calculate the cross product of the two provided points, returns axb
   * Documentation: http://en.wikipedia.org/wiki/Cross_product
   * @param {Point3d} a
   * @param {Point3d} b
   * @return {Point3d} cross product axb
   */
  Point3d.crossProduct = function (a, b) {
    var crossproduct = new Point3d();

    crossproduct.x = a.y * b.z - a.z * b.y;
    crossproduct.y = a.z * b.x - a.x * b.z;
    crossproduct.z = a.x * b.y - a.y * b.x;

    return crossproduct;
  };

  /**
   * Rtrieve the length of the vector (or the distance from this point to the origin
   * @return {Number}  length
   */
  Point3d.prototype.length = function () {
    return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
  };

  module.exports = Point3d;

/***/ },
/* 14 */
/***/ function(module, exports) {

  /**
   * @prototype Point2d
   * @param {Number} [x]
   * @param {Number} [y]
   */
  "use strict";

  function Point2d(x, y) {
    this.x = x !== undefined ? x : 0;
    this.y = y !== undefined ? y : 0;
  }

  module.exports = Point2d;

/***/ },
/* 15 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Point3d = __webpack_require__(13);

  /**
   * @class Camera
   * The camera is mounted on a (virtual) camera arm. The camera arm can rotate
   * The camera is always looking in the direction of the origin of the arm.
   * This way, the camera always rotates around one fixed point, the location
   * of the camera arm.
   *
   * Documentation:
   *   http://en.wikipedia.org/wiki/3D_projection
   */
  function Camera() {
    this.armLocation = new Point3d();
    this.armRotation = {};
    this.armRotation.horizontal = 0;
    this.armRotation.vertical = 0;
    this.armLength = 1.7;

    this.cameraLocation = new Point3d();
    this.cameraRotation = new Point3d(0.5 * Math.PI, 0, 0);

    this.calculateCameraOrientation();
  }

  /**
   * Set the location (origin) of the arm
   * @param {Number} x  Normalized value of x
   * @param {Number} y  Normalized value of y
   * @param {Number} z  Normalized value of z
   */
  Camera.prototype.setArmLocation = function (x, y, z) {
    this.armLocation.x = x;
    this.armLocation.y = y;
    this.armLocation.z = z;

    this.calculateCameraOrientation();
  };

  /**
   * Set the rotation of the camera arm
   * @param {Number} horizontal   The horizontal rotation, between 0 and 2*PI.
   *                Optional, can be left undefined.
   * @param {Number} vertical   The vertical rotation, between 0 and 0.5*PI
   *                if vertical=0.5*PI, the graph is shown from the
   *                top. Optional, can be left undefined.
   */
  Camera.prototype.setArmRotation = function (horizontal, vertical) {
    if (horizontal !== undefined) {
      this.armRotation.horizontal = horizontal;
    }

    if (vertical !== undefined) {
      this.armRotation.vertical = vertical;
      if (this.armRotation.vertical < 0) this.armRotation.vertical = 0;
      if (this.armRotation.vertical > 0.5 * Math.PI) this.armRotation.vertical = 0.5 * Math.PI;
    }

    if (horizontal !== undefined || vertical !== undefined) {
      this.calculateCameraOrientation();
    }
  };

  /**
   * Retrieve the current arm rotation
   * @return {object}   An object with parameters horizontal and vertical
   */
  Camera.prototype.getArmRotation = function () {
    var rot = {};
    rot.horizontal = this.armRotation.horizontal;
    rot.vertical = this.armRotation.vertical;

    return rot;
  };

  /**
   * Set the (normalized) length of the camera arm.
   * @param {Number} length A length between 0.71 and 5.0
   */
  Camera.prototype.setArmLength = function (length) {
    if (length === undefined) return;

    this.armLength = length;

    // Radius must be larger than the corner of the graph,
    // which has a distance of sqrt(0.5^2+0.5^2) = 0.71 from the center of the
    // graph
    if (this.armLength < 0.71) this.armLength = 0.71;
    if (this.armLength > 5.0) this.armLength = 5.0;

    this.calculateCameraOrientation();
  };

  /**
   * Retrieve the arm length
   * @return {Number} length
   */
  Camera.prototype.getArmLength = function () {
    return this.armLength;
  };

  /**
   * Retrieve the camera location
   * @return {Point3d} cameraLocation
   */
  Camera.prototype.getCameraLocation = function () {
    return this.cameraLocation;
  };

  /**
   * Retrieve the camera rotation
   * @return {Point3d} cameraRotation
   */
  Camera.prototype.getCameraRotation = function () {
    return this.cameraRotation;
  };

  /**
   * Calculate the location and rotation of the camera based on the
   * position and orientation of the camera arm
   */
  Camera.prototype.calculateCameraOrientation = function () {
    // calculate location of the camera
    this.cameraLocation.x = this.armLocation.x - this.armLength * Math.sin(this.armRotation.horizontal) * Math.cos(this.armRotation.vertical);
    this.cameraLocation.y = this.armLocation.y - this.armLength * Math.cos(this.armRotation.horizontal) * Math.cos(this.armRotation.vertical);
    this.cameraLocation.z = this.armLocation.z + this.armLength * Math.sin(this.armRotation.vertical);

    // calculate rotation of the camera
    this.cameraRotation.x = Math.PI / 2 - this.armRotation.vertical;
    this.cameraRotation.y = 0;
    this.cameraRotation.z = -this.armRotation.horizontal;
  };

  module.exports = Camera;

/***/ },
/* 16 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var DataView = __webpack_require__(10);

  /**
   * @class Filter
   *
   * @param {DataSet} data The google data table
   * @param {Number}  column             The index of the column to be filtered
   * @param {Graph} graph           The graph
   */
  function Filter(data, column, graph) {
    this.data = data;
    this.column = column;
    this.graph = graph; // the parent graph

    this.index = undefined;
    this.value = undefined;

    // read all distinct values and select the first one
    this.values = graph.getDistinctValues(data.get(), this.column);

    // sort both numeric and string values correctly
    this.values.sort(function (a, b) {
      return a > b ? 1 : a < b ? -1 : 0;
    });

    if (this.values.length > 0) {
      this.selectValue(0);
    }

    // create an array with the filtered datapoints. this will be loaded afterwards
    this.dataPoints = [];

    this.loaded = false;
    this.onLoadCallback = undefined;

    if (graph.animationPreload) {
      this.loaded = false;
      this.loadInBackground();
    } else {
      this.loaded = true;
    }
  };

  /**
   * Return the label
   * @return {string} label
   */
  Filter.prototype.isLoaded = function () {
    return this.loaded;
  };

  /**
   * Return the loaded progress
   * @return {Number} percentage between 0 and 100
   */
  Filter.prototype.getLoadedProgress = function () {
    var len = this.values.length;

    var i = 0;
    while (this.dataPoints[i]) {
      i++;
    }

    return Math.round(i / len * 100);
  };

  /**
   * Return the label
   * @return {string} label
   */
  Filter.prototype.getLabel = function () {
    return this.graph.filterLabel;
  };

  /**
   * Return the columnIndex of the filter
   * @return {Number} columnIndex
   */
  Filter.prototype.getColumn = function () {
    return this.column;
  };

  /**
   * Return the currently selected value. Returns undefined if there is no selection
   * @return {*} value
   */
  Filter.prototype.getSelectedValue = function () {
    if (this.index === undefined) return undefined;

    return this.values[this.index];
  };

  /**
   * Retrieve all values of the filter
   * @return {Array} values
   */
  Filter.prototype.getValues = function () {
    return this.values;
  };

  /**
   * Retrieve one value of the filter
   * @param {Number}  index
   * @return {*} value
   */
  Filter.prototype.getValue = function (index) {
    if (index >= this.values.length) throw 'Error: index out of range';

    return this.values[index];
  };

  /**
   * Retrieve the (filtered) dataPoints for the currently selected filter index
   * @param {Number} [index] (optional)
   * @return {Array} dataPoints
   */
  Filter.prototype._getDataPoints = function (index) {
    if (index === undefined) index = this.index;

    if (index === undefined) return [];

    var dataPoints;
    if (this.dataPoints[index]) {
      dataPoints = this.dataPoints[index];
    } else {
      var f = {};
      f.column = this.column;
      f.value = this.values[index];

      var dataView = new DataView(this.data, { filter: function filter(item) {
          return item[f.column] == f.value;
        } }).get();
      dataPoints = this.graph._getDataPoints(dataView);

      this.dataPoints[index] = dataPoints;
    }

    return dataPoints;
  };

  /**
   * Set a callback function when the filter is fully loaded.
   */
  Filter.prototype.setOnLoadCallback = function (callback) {
    this.onLoadCallback = callback;
  };

  /**
   * Add a value to the list with available values for this filter
   * No double entries will be created.
   * @param {Number} index
   */
  Filter.prototype.selectValue = function (index) {
    if (index >= this.values.length) throw 'Error: index out of range';

    this.index = index;
    this.value = this.values[index];
  };

  /**
   * Load all filtered rows in the background one by one
   * Start this method without providing an index!
   */
  Filter.prototype.loadInBackground = function (index) {
    if (index === undefined) index = 0;

    var frame = this.graph.frame;

    if (index < this.values.length) {
      var dataPointsTemp = this._getDataPoints(index);
      //this.graph.redrawInfo(); // TODO: not neat

      // create a progress box
      if (frame.progress === undefined) {
        frame.progress = document.createElement('DIV');
        frame.progress.style.position = 'absolute';
        frame.progress.style.color = 'gray';
        frame.appendChild(frame.progress);
      }
      var progress = this.getLoadedProgress();
      frame.progress.innerHTML = 'Loading animation... ' + progress + '%';
      // TODO: this is no nice solution...
      frame.progress.style.bottom = 60 + 'px'; // TODO: use height of slider
      frame.progress.style.left = 10 + 'px';

      var me = this;
      setTimeout(function () {
        me.loadInBackground(index + 1);
      }, 10);
      this.loaded = false;
    } else {
      this.loaded = true;

      // remove the progress box
      if (frame.progress !== undefined) {
        frame.removeChild(frame.progress);
        frame.progress = undefined;
      }

      if (this.onLoadCallback) this.onLoadCallback();
    }
  };

  module.exports = Filter;

/***/ },
/* 17 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);

  /**
   * @constructor Slider
   *
   * An html slider control with start/stop/prev/next buttons
   * @param {Element} container  The element where the slider will be created
   * @param {Object} options   Available options:
   *                 {boolean} visible   If true (default) the
   *                           slider is visible.
   */
  function Slider(container, options) {
    if (container === undefined) {
      throw 'Error: No container element defined';
    }
    this.container = container;
    this.visible = options && options.visible != undefined ? options.visible : true;

    if (this.visible) {
      this.frame = document.createElement('DIV');
      //this.frame.style.backgroundColor = '#E5E5E5';
      this.frame.style.width = '100%';
      this.frame.style.position = 'relative';
      this.container.appendChild(this.frame);

      this.frame.prev = document.createElement('INPUT');
      this.frame.prev.type = 'BUTTON';
      this.frame.prev.value = 'Prev';
      this.frame.appendChild(this.frame.prev);

      this.frame.play = document.createElement('INPUT');
      this.frame.play.type = 'BUTTON';
      this.frame.play.value = 'Play';
      this.frame.appendChild(this.frame.play);

      this.frame.next = document.createElement('INPUT');
      this.frame.next.type = 'BUTTON';
      this.frame.next.value = 'Next';
      this.frame.appendChild(this.frame.next);

      this.frame.bar = document.createElement('INPUT');
      this.frame.bar.type = 'BUTTON';
      this.frame.bar.style.position = 'absolute';
      this.frame.bar.style.border = '1px solid red';
      this.frame.bar.style.width = '100px';
      this.frame.bar.style.height = '6px';
      this.frame.bar.style.borderRadius = '2px';
      this.frame.bar.style.MozBorderRadius = '2px';
      this.frame.bar.style.border = '1px solid #7F7F7F';
      this.frame.bar.style.backgroundColor = '#E5E5E5';
      this.frame.appendChild(this.frame.bar);

      this.frame.slide = document.createElement('INPUT');
      this.frame.slide.type = 'BUTTON';
      this.frame.slide.style.margin = '0px';
      this.frame.slide.value = ' ';
      this.frame.slide.style.position = 'relative';
      this.frame.slide.style.left = '-100px';
      this.frame.appendChild(this.frame.slide);

      // create events
      var me = this;
      this.frame.slide.onmousedown = function (event) {
        me._onMouseDown(event);
      };
      this.frame.prev.onclick = function (event) {
        me.prev(event);
      };
      this.frame.play.onclick = function (event) {
        me.togglePlay(event);
      };
      this.frame.next.onclick = function (event) {
        me.next(event);
      };
    }

    this.onChangeCallback = undefined;

    this.values = [];
    this.index = undefined;

    this.playTimeout = undefined;
    this.playInterval = 1000; // milliseconds
    this.playLoop = true;
  }

  /**
   * Select the previous index
   */
  Slider.prototype.prev = function () {
    var index = this.getIndex();
    if (index > 0) {
      index--;
      this.setIndex(index);
    }
  };

  /**
   * Select the next index
   */
  Slider.prototype.next = function () {
    var index = this.getIndex();
    if (index < this.values.length - 1) {
      index++;
      this.setIndex(index);
    }
  };

  /**
   * Select the next index
   */
  Slider.prototype.playNext = function () {
    var start = new Date();

    var index = this.getIndex();
    if (index < this.values.length - 1) {
      index++;
      this.setIndex(index);
    } else if (this.playLoop) {
      // jump to the start
      index = 0;
      this.setIndex(index);
    }

    var end = new Date();
    var diff = end - start;

    // calculate how much time it to to set the index and to execute the callback
    // function.
    var interval = Math.max(this.playInterval - diff, 0);
    // document.title = diff // TODO: cleanup

    var me = this;
    this.playTimeout = setTimeout(function () {
      me.playNext();
    }, interval);
  };

  /**
   * Toggle start or stop playing
   */
  Slider.prototype.togglePlay = function () {
    if (this.playTimeout === undefined) {
      this.play();
    } else {
      this.stop();
    }
  };

  /**
   * Start playing
   */
  Slider.prototype.play = function () {
    // Test whether already playing
    if (this.playTimeout) return;

    this.playNext();

    if (this.frame) {
      this.frame.play.value = 'Stop';
    }
  };

  /**
   * Stop playing
   */
  Slider.prototype.stop = function () {
    clearInterval(this.playTimeout);
    this.playTimeout = undefined;

    if (this.frame) {
      this.frame.play.value = 'Play';
    }
  };

  /**
   * Set a callback function which will be triggered when the value of the
   * slider bar has changed.
   */
  Slider.prototype.setOnChangeCallback = function (callback) {
    this.onChangeCallback = callback;
  };

  /**
   * Set the interval for playing the list
   * @param {Number} interval   The interval in milliseconds
   */
  Slider.prototype.setPlayInterval = function (interval) {
    this.playInterval = interval;
  };

  /**
   * Retrieve the current play interval
   * @return {Number} interval   The interval in milliseconds
   */
  Slider.prototype.getPlayInterval = function (interval) {
    return this.playInterval;
  };

  /**
   * Set looping on or off
   * @pararm {boolean} doLoop  If true, the slider will jump to the start when
   *               the end is passed, and will jump to the end
   *               when the start is passed.
   */
  Slider.prototype.setPlayLoop = function (doLoop) {
    this.playLoop = doLoop;
  };

  /**
   * Execute the onchange callback function
   */
  Slider.prototype.onChange = function () {
    if (this.onChangeCallback !== undefined) {
      this.onChangeCallback();
    }
  };

  /**
   * redraw the slider on the correct place
   */
  Slider.prototype.redraw = function () {
    if (this.frame) {
      // resize the bar
      this.frame.bar.style.top = this.frame.clientHeight / 2 - this.frame.bar.offsetHeight / 2 + 'px';
      this.frame.bar.style.width = this.frame.clientWidth - this.frame.prev.clientWidth - this.frame.play.clientWidth - this.frame.next.clientWidth - 30 + 'px';

      // position the slider button
      var left = this.indexToLeft(this.index);
      this.frame.slide.style.left = left + 'px';
    }
  };

  /**
   * Set the list with values for the slider
   * @param {Array} values   A javascript array with values (any type)
   */
  Slider.prototype.setValues = function (values) {
    this.values = values;

    if (this.values.length > 0) this.setIndex(0);else this.index = undefined;
  };

  /**
   * Select a value by its index
   * @param {Number} index
   */
  Slider.prototype.setIndex = function (index) {
    if (index < this.values.length) {
      this.index = index;

      this.redraw();
      this.onChange();
    } else {
      throw 'Error: index out of range';
    }
  };

  /**
   * retrieve the index of the currently selected vaue
   * @return {Number} index
   */
  Slider.prototype.getIndex = function () {
    return this.index;
  };

  /**
   * retrieve the currently selected value
   * @return {*} value
   */
  Slider.prototype.get = function () {
    return this.values[this.index];
  };

  Slider.prototype._onMouseDown = function (event) {
    // only react on left mouse button down
    var leftButtonDown = event.which ? event.which === 1 : event.button === 1;
    if (!leftButtonDown) return;

    this.startClientX = event.clientX;
    this.startSlideX = parseFloat(this.frame.slide.style.left);

    this.frame.style.cursor = 'move';

    // add event listeners to handle moving the contents
    // we store the function onmousemove and onmouseup in the graph, so we can
    // remove the eventlisteners lateron in the function mouseUp()
    var me = this;
    this.onmousemove = function (event) {
      me._onMouseMove(event);
    };
    this.onmouseup = function (event) {
      me._onMouseUp(event);
    };
    util.addEventListener(document, 'mousemove', this.onmousemove);
    util.addEventListener(document, 'mouseup', this.onmouseup);
    util.preventDefault(event);
  };

  Slider.prototype.leftToIndex = function (left) {
    var width = parseFloat(this.frame.bar.style.width) - this.frame.slide.clientWidth - 10;
    var x = left - 3;

    var index = Math.round(x / width * (this.values.length - 1));
    if (index < 0) index = 0;
    if (index > this.values.length - 1) index = this.values.length - 1;

    return index;
  };

  Slider.prototype.indexToLeft = function (index) {
    var width = parseFloat(this.frame.bar.style.width) - this.frame.slide.clientWidth - 10;

    var x = index / (this.values.length - 1) * width;
    var left = x + 3;

    return left;
  };

  Slider.prototype._onMouseMove = function (event) {
    var diff = event.clientX - this.startClientX;
    var x = this.startSlideX + diff;

    var index = this.leftToIndex(x);

    this.setIndex(index);

    util.preventDefault();
  };

  Slider.prototype._onMouseUp = function (event) {
    this.frame.style.cursor = 'auto';

    // remove event listeners
    util.removeEventListener(document, 'mousemove', this.onmousemove);
    util.removeEventListener(document, 'mouseup', this.onmouseup);

    util.preventDefault();
  };

  module.exports = Slider;

/***/ },
/* 18 */
/***/ function(module, exports) {

  /**
   * @prototype StepNumber
   * The class StepNumber is an iterator for Numbers. You provide a start and end
   * value, and a best step size. StepNumber itself rounds to fixed values and
   * a finds the step that best fits the provided step.
   *
   * If prettyStep is true, the step size is chosen as close as possible to the
   * provided step, but being a round value like 1, 2, 5, 10, 20, 50, ....
   *
   * Example usage:
   *   var step = new StepNumber(0, 10, 2.5, true);
   *   step.start();
   *   while (!step.end()) {
   *   alert(step.getCurrent());
   *   step.next();
   *   }
   *
   * Version: 1.0
   *
   * @param {Number} start     The start value
   * @param {Number} end     The end value
   * @param {Number} step    Optional. Step size. Must be a positive value.
   * @param {boolean} prettyStep Optional. If true, the step size is rounded
   *               To a pretty step size (like 1, 2, 5, 10, 20, 50, ...)
   */
  "use strict";

  function StepNumber(start, end, step, prettyStep) {
    // set default values
    this._start = 0;
    this._end = 0;
    this._step = 1;
    this.prettyStep = true;
    this.precision = 5;

    this._current = 0;
    this.setRange(start, end, step, prettyStep);
  };

  /**
   * Set a new range: start, end and step.
   *
   * @param {Number} start     The start value
   * @param {Number} end     The end value
   * @param {Number} step    Optional. Step size. Must be a positive value.
   * @param {boolean} prettyStep Optional. If true, the step size is rounded
   *               To a pretty step size (like 1, 2, 5, 10, 20, 50, ...)
   */
  StepNumber.prototype.setRange = function (start, end, step, prettyStep) {
    this._start = start ? start : 0;
    this._end = end ? end : 0;

    this.setStep(step, prettyStep);
  };

  /**
   * Set a new step size
   * @param {Number} step    New step size. Must be a positive value
   * @param {boolean} prettyStep Optional. If true, the provided step is rounded
   *               to a pretty step size (like 1, 2, 5, 10, 20, 50, ...)
   */
  StepNumber.prototype.setStep = function (step, prettyStep) {
    if (step === undefined || step <= 0) return;

    if (prettyStep !== undefined) this.prettyStep = prettyStep;

    if (this.prettyStep === true) this._step = StepNumber.calculatePrettyStep(step);else this._step = step;
  };

  /**
   * Calculate a nice step size, closest to the desired step size.
   * Returns a value in one of the ranges 1*10^n, 2*10^n, or 5*10^n, where n is an
   * integer Number. For example 1, 2, 5, 10, 20, 50, etc...
   * @param {Number}  step  Desired step size
   * @return {Number}     Nice step size
   */
  StepNumber.calculatePrettyStep = function (step) {
    var log10 = function log10(x) {
      return Math.log(x) / Math.LN10;
    };

    // try three steps (multiple of 1, 2, or 5
    var step1 = Math.pow(10, Math.round(log10(step))),
        step2 = 2 * Math.pow(10, Math.round(log10(step / 2))),
        step5 = 5 * Math.pow(10, Math.round(log10(step / 5)));

    // choose the best step (closest to minimum step)
    var prettyStep = step1;
    if (Math.abs(step2 - step) <= Math.abs(prettyStep - step)) prettyStep = step2;
    if (Math.abs(step5 - step) <= Math.abs(prettyStep - step)) prettyStep = step5;

    // for safety
    if (prettyStep <= 0) {
      prettyStep = 1;
    }

    return prettyStep;
  };

  /**
   * returns the current value of the step
   * @return {Number} current value
   */
  StepNumber.prototype.getCurrent = function () {
    return parseFloat(this._current.toPrecision(this.precision));
  };

  /**
   * returns the current step size
   * @return {Number} current step size
   */
  StepNumber.prototype.getStep = function () {
    return this._step;
  };

  /**
   * Set the current value to the largest value smaller than start, which
   * is a multiple of the step size
   */
  StepNumber.prototype.start = function () {
    this._current = this._start - this._start % this._step;
  };

  /**
   * Do a step, add the step size to the current value
   */
  StepNumber.prototype.next = function () {
    this._current += this._step;
  };

  /**
   * Returns true whether the end is reached
   * @return {boolean}  True if the current value has passed the end value.
   */
  StepNumber.prototype.end = function () {
    return this._current > this._end;
  };

  module.exports = StepNumber;

/***/ },
/* 19 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Emitter = __webpack_require__(12);
  var Hammer = __webpack_require__(20);
  var moment = __webpack_require__(2);
  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var Range = __webpack_require__(23);
  var Core = __webpack_require__(27);
  var TimeAxis = __webpack_require__(38);
  var CurrentTime = __webpack_require__(43);
  var CustomTime = __webpack_require__(41);
  var ItemSet = __webpack_require__(28);

  var Configurator = __webpack_require__(44);
  var Validator = __webpack_require__(46)['default'];
  var printStyle = __webpack_require__(46).printStyle;
  var allOptions = __webpack_require__(47).allOptions;
  var configureOptions = __webpack_require__(47).configureOptions;

  /**
   * Create a timeline visualization
   * @param {HTMLElement} container
   * @param {vis.DataSet | vis.DataView | Array} [items]
   * @param {vis.DataSet | vis.DataView | Array} [groups]
   * @param {Object} [options]  See Timeline.setOptions for the available options.
   * @constructor
   * @extends Core
   */
  function Timeline(container, items, groups, options) {
    if (!(this instanceof Timeline)) {
      throw new SyntaxError('Constructor must be called with the new operator');
    }

    // if the third element is options, the forth is groups (optionally);
    if (!(Array.isArray(groups) || groups instanceof DataSet || groups instanceof DataView) && groups instanceof Object) {
      var forthArgument = options;
      options = groups;
      groups = forthArgument;
    }

    var me = this;
    this.defaultOptions = {
      start: null,
      end: null,

      autoResize: true,
      throttleRedraw: 0, // ms

      orientation: {
        axis: 'bottom', // axis orientation: 'bottom', 'top', or 'both'
        item: 'bottom' // not relevant
      },

      moment: moment,

      width: null,
      height: null,
      maxHeight: null,
      minHeight: null
    };
    this.options = util.deepExtend({}, this.defaultOptions);

    // Create the DOM, props, and emitter
    this._create(container);

    // all components listed here will be repainted automatically
    this.components = [];

    this.body = {
      dom: this.dom,
      domProps: this.props,
      emitter: {
        on: this.on.bind(this),
        off: this.off.bind(this),
        emit: this.emit.bind(this)
      },
      hiddenDates: [],
      util: {
        getScale: function getScale() {
          return me.timeAxis.step.scale;
        },
        getStep: function getStep() {
          return me.timeAxis.step.step;
        },

        toScreen: me._toScreen.bind(me),
        toGlobalScreen: me._toGlobalScreen.bind(me), // this refers to the root.width
        toTime: me._toTime.bind(me),
        toGlobalTime: me._toGlobalTime.bind(me)
      }
    };

    // range
    this.range = new Range(this.body);
    this.components.push(this.range);
    this.body.range = this.range;

    // time axis
    this.timeAxis = new TimeAxis(this.body);
    this.timeAxis2 = null; // used in case of orientation option 'both'
    this.components.push(this.timeAxis);

    // current time bar
    this.currentTime = new CurrentTime(this.body);
    this.components.push(this.currentTime);

    // item set
    this.itemSet = new ItemSet(this.body);
    this.components.push(this.itemSet);

    this.itemsData = null; // DataSet
    this.groupsData = null; // DataSet

    this.on('tap', function (event) {
      me.emit('click', me.getEventProperties(event));
    });
    this.on('doubletap', function (event) {
      me.emit('doubleClick', me.getEventProperties(event));
    });
    this.dom.root.oncontextmenu = function (event) {
      me.emit('contextmenu', me.getEventProperties(event));
    };

    //Single time autoscale/fit
    this.fitDone = false;
    this.on('changed', function () {
      if (this.itemsData == null) return;
      if (!me.fitDone) {
        me.fitDone = true;
        if (me.options.start != undefined || me.options.end != undefined) {
          if (me.options.start == undefined || me.options.end == undefined) {
            var range = me.getItemRange();
          }

          var start = me.options.start != undefined ? me.options.start : range.min;
          var end = me.options.end != undefined ? me.options.end : range.max;

          me.setWindow(start, end, { animation: false });
        } else {
          me.fit({ animation: false });
        }
      }
    });

    // apply options
    if (options) {
      this.setOptions(options);
    }

    // IMPORTANT: THIS HAPPENS BEFORE SET ITEMS!
    if (groups) {
      this.setGroups(groups);
    }

    // create itemset
    if (items) {
      this.setItems(items);
    }

    // draw for the first time
    this._redraw();
  }

  // Extend the functionality from Core
  Timeline.prototype = new Core();

  /**
   * Load a configurator
   * @return {Object}
   * @private
   */
  Timeline.prototype._createConfigurator = function () {
    return new Configurator(this, this.dom.container, configureOptions);
  };

  /**
   * Force a redraw. The size of all items will be recalculated.
   * Can be useful to manually redraw when option autoResize=false and the window
   * has been resized, or when the items CSS has been changed.
   *
   * Note: this function will be overridden on construction with a trottled version
   */
  Timeline.prototype.redraw = function () {
    this.itemSet && this.itemSet.markDirty({ refreshItems: true });
    this._redraw();
  };

  Timeline.prototype.setOptions = function (options) {
    // validate options
    var errorFound = Validator.validate(options, allOptions);
    if (errorFound === true) {
      console.log('%cErrors have been found in the supplied options object.', printStyle);
    }

    Core.prototype.setOptions.call(this, options);

    if ('type' in options) {
      if (options.type !== this.options.type) {
        this.options.type = options.type;

        // force recreation of all items
        var itemsData = this.itemsData;
        if (itemsData) {
          var selection = this.getSelection();
          this.setItems(null); // remove all
          this.setItems(itemsData); // add all
          this.setSelection(selection); // restore selection
        }
      }
    }
  };

  /**
   * Set items
   * @param {vis.DataSet | Array | null} items
   */
  Timeline.prototype.setItems = function (items) {
    // convert to type DataSet when needed
    var newDataSet;
    if (!items) {
      newDataSet = null;
    } else if (items instanceof DataSet || items instanceof DataView) {
      newDataSet = items;
    } else {
      // turn an array into a dataset
      newDataSet = new DataSet(items, {
        type: {
          start: 'Date',
          end: 'Date'
        }
      });
    }

    // set items
    this.itemsData = newDataSet;
    this.itemSet && this.itemSet.setItems(newDataSet);
  };

  /**
   * Set groups
   * @param {vis.DataSet | Array} groups
   */
  Timeline.prototype.setGroups = function (groups) {
    // convert to type DataSet when needed
    var newDataSet;
    if (!groups) {
      newDataSet = null;
    } else if (groups instanceof DataSet || groups instanceof DataView) {
      newDataSet = groups;
    } else {
      // turn an array into a dataset
      newDataSet = new DataSet(groups);
    }

    this.groupsData = newDataSet;
    this.itemSet.setGroups(newDataSet);
  };

  /**
   * Set both items and groups in one go
   * @param {{items: Array | vis.DataSet, groups: Array | vis.DataSet}} data
   */
  Timeline.prototype.setData = function (data) {
    if (data && data.groups) {
      this.setGroups(data.groups);
    }

    if (data && data.items) {
      this.setItems(data.items);
    }
  };

  /**
   * Set selected items by their id. Replaces the current selection
   * Unknown id's are silently ignored.
   * @param {string[] | string} [ids]  An array with zero or more id's of the items to be
   *                                selected. If ids is an empty array, all items will be
   *                                unselected.
   * @param {Object} [options]      Available options:
   *                                `focus: boolean`
   *                                    If true, focus will be set to the selected item(s)
   *                                `animation: boolean | {duration: number, easingFunction: string}`
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   *                                    Only applicable when option focus is true.
   */
  Timeline.prototype.setSelection = function (ids, options) {
    this.itemSet && this.itemSet.setSelection(ids);

    if (options && options.focus) {
      this.focus(ids, options);
    }
  };

  /**
   * Get the selected items by their id
   * @return {Array} ids  The ids of the selected items
   */
  Timeline.prototype.getSelection = function () {
    return this.itemSet && this.itemSet.getSelection() || [];
  };

  /**
   * Adjust the visible window such that the selected item (or multiple items)
   * are centered on screen.
   * @param {String | String[]} id     An item id or array with item ids
   * @param {Object} [options]      Available options:
   *                                `animation: boolean | {duration: number, easingFunction: string}`
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   */
  Timeline.prototype.focus = function (id, options) {
    if (!this.itemsData || id == undefined) return;

    var ids = Array.isArray(id) ? id : [id];

    // get the specified item(s)
    var itemsData = this.itemsData.getDataSet().get(ids, {
      type: {
        start: 'Date',
        end: 'Date'
      }
    });

    // calculate minimum start and maximum end of specified items
    var start = null;
    var end = null;
    itemsData.forEach(function (itemData) {
      var s = itemData.start.valueOf();
      var e = 'end' in itemData ? itemData.end.valueOf() : itemData.start.valueOf();

      if (start === null || s < start) {
        start = s;
      }

      if (end === null || e > end) {
        end = e;
      }
    });

    if (start !== null && end !== null) {
      // calculate the new middle and interval for the window
      var middle = (start + end) / 2;
      var interval = Math.max(this.range.end - this.range.start, (end - start) * 1.1);

      var animation = options && options.animation !== undefined ? options.animation : true;
      this.range.setRange(middle - interval / 2, middle + interval / 2, animation);
    }
  };

  /**
   * Set Timeline window such that it fits all items
   * @param {Object} [options]  Available options:
   *                                `animation: boolean | {duration: number, easingFunction: string}`
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   */
  Timeline.prototype.fit = function (options) {
    var animation = options && options.animation !== undefined ? options.animation : true;
    var range = this.getItemRange();
    this.range.setRange(range.min, range.max, animation);
  };

  /**
   * Determine the range of the items, taking into account their actual width
   * and a margin of 10 pixels on both sides.
   * @return {{min: Date | null, max: Date | null}}
   */
  Timeline.prototype.getItemRange = function () {
    var _this = this;

    // get a rough approximation for the range based on the items start and end dates
    var range = this.getDataRange();
    var min = range.min !== null ? range.min.valueOf() : null;
    var max = range.max !== null ? range.max.valueOf() : null;
    var minItem = null;
    var maxItem = null;

    if (min != null && max != null) {
      var interval;
      var factor;
      var lhs;
      var rhs;
      var delta;

      (function () {
        var getStart = function getStart(item) {
          return util.convert(item.data.start, 'Date').valueOf();
        };

        var getEnd = function getEnd(item) {
          var end = item.data.end != undefined ? item.data.end : item.data.start;
          return util.convert(end, 'Date').valueOf();
        }

        // calculate the date of the left side and right side of the items given
        ;

        interval = max - min;
        // ms
        if (interval <= 0) {
          interval = 10;
        }
        factor = interval / _this.props.center.width;
        util.forEach(_this.itemSet.items, (function (item) {
          item.show();
          item.repositionX();

          var start = getStart(item);
          var end = getEnd(item);

          var left = start - (item.getWidthLeft() + 10) * factor;
          var right = end + (item.getWidthRight() + 10) * factor;

          if (left < min) {
            min = left;
            minItem = item;
          }
          if (right > max) {
            max = right;
            maxItem = item;
          }
        }).bind(_this));

        if (minItem && maxItem) {
          lhs = minItem.getWidthLeft() + 10;
          rhs = maxItem.getWidthRight() + 10;
          delta = _this.props.center.width - lhs - rhs;
          // px

          if (delta > 0) {
            min = getStart(minItem) - lhs * interval / delta; // ms
            max = getEnd(maxItem) + rhs * interval / delta; // ms
          }
        }
      })();
    }

    return {
      min: min != null ? new Date(min) : null,
      max: max != null ? new Date(max) : null
    };
  };

  /**
   * Calculate the data range of the items start and end dates
   * @returns {{min: Date | null, max: Date | null}}
   */
  Timeline.prototype.getDataRange = function () {
    var min = null;
    var max = null;

    var dataset = this.itemsData && this.itemsData.getDataSet();
    if (dataset) {
      dataset.forEach(function (item) {
        var start = util.convert(item.start, 'Date').valueOf();
        var end = util.convert(item.end != undefined ? item.end : item.start, 'Date').valueOf();
        if (min === null || start < min) {
          min = start;
        }
        if (max === null || end > max) {
          max = end;
        }
      });
    }

    return {
      min: min != null ? new Date(min) : null,
      max: max != null ? new Date(max) : null
    };
  };

  /**
   * Generate Timeline related information from an event
   * @param {Event} event
   * @return {Object} An object with related information, like on which area
   *                  The event happened, whether clicked on an item, etc.
   */
  Timeline.prototype.getEventProperties = function (event) {
    var clientX = event.center ? event.center.x : event.clientX;
    var clientY = event.center ? event.center.y : event.clientY;
    var x = clientX - util.getAbsoluteLeft(this.dom.centerContainer);
    var y = clientY - util.getAbsoluteTop(this.dom.centerContainer);

    var item = this.itemSet.itemFromTarget(event);
    var group = this.itemSet.groupFromTarget(event);
    var customTime = CustomTime.customTimeFromTarget(event);

    var snap = this.itemSet.options.snap || null;
    var scale = this.body.util.getScale();
    var step = this.body.util.getStep();
    var time = this._toTime(x);
    var snappedTime = snap ? snap(time, scale, step) : time;

    var element = util.getTarget(event);
    var what = null;
    if (item != null) {
      what = 'item';
    } else if (customTime != null) {
      what = 'custom-time';
    } else if (util.hasParent(element, this.timeAxis.dom.foreground)) {
      what = 'axis';
    } else if (this.timeAxis2 && util.hasParent(element, this.timeAxis2.dom.foreground)) {
      what = 'axis';
    } else if (util.hasParent(element, this.itemSet.dom.labelSet)) {
      what = 'group-label';
    } else if (util.hasParent(element, this.currentTime.bar)) {
      what = 'current-time';
    } else if (util.hasParent(element, this.dom.center)) {
      what = 'background';
    }

    return {
      event: event,
      item: item ? item.id : null,
      group: group ? group.groupId : null,
      what: what,
      pageX: event.srcEvent ? event.srcEvent.pageX : event.pageX,
      pageY: event.srcEvent ? event.srcEvent.pageY : event.pageY,
      x: x,
      y: y,
      time: time,
      snappedTime: snappedTime
    };
  };

  module.exports = Timeline;

/***/ },
/* 20 */
/***/ function(module, exports, __webpack_require__) {

  // Only load hammer.js when in a browser environment
  // (loading hammer.js in a node.js environment gives errors)
  'use strict';

  if (typeof window !== 'undefined') {
    var propagating = __webpack_require__(21);
    var Hammer = window['Hammer'] || __webpack_require__(22);
    module.exports = propagating(Hammer, {
      preventDefault: 'mouse'
    });
  } else {
    module.exports = function () {
      throw Error('hammer.js is only available in a browser, not in node.js.');
    };
  }

/***/ },
/* 21 */
/***/ function(module, exports, __webpack_require__) {

  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;'use strict';

  (function (factory) {
    if (true) {
      // AMD. Register as an anonymous module.
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory), __WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ? (__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports === 'object') {
      // Node. Does not work with strict CommonJS, but
      // only CommonJS-like environments that support module.exports,
      // like Node.
      module.exports = factory();
    } else {
      // Browser globals (root is window)
      window.propagating = factory();
    }
  }(function () {
    var _firstTarget = null; // singleton, will contain the target element where the touch event started
    var _processing = false; // singleton, true when a touch event is being handled

    /**
     * Extend an Hammer.js instance with event propagation.
     *
     * Features:
     * - Events emitted by hammer will propagate in order from child to parent
     *   elements.
     * - Events are extended with a function `event.stopPropagation()` to stop
     *   propagation to parent elements.
     * - An option `preventDefault` to stop all default browser behavior.
     *
     * Usage:
     *   var hammer = propagatingHammer(new Hammer(element));
     *   var hammer = propagatingHammer(new Hammer(element), {preventDefault: true});
     *
     * @param {Hammer.Manager} hammer   An hammer instance.
     * @param {Object} [options]        Available options:
     *                                  - `preventDefault: true | 'mouse' | 'touch' | 'pen'`.
     *                                    Enforce preventing the default browser behavior.
     *                                    Cannot be set to `false`.
     * @return {Hammer.Manager} Returns the same hammer instance with extended
     *                          functionality
     */
    return function propagating(hammer, options) {
      var _options = options || {
        preventDefault: false
      };

      if (hammer.Manager) {
        // This looks like the Hammer constructor.
        // Overload the constructors with our own.
        var Hammer = hammer;

        var PropagatingHammer = function(element, options) {
          var o = Object.create(_options);
          if (options) Hammer.assign(o, options);
          return propagating(new Hammer(element, o), o);
        };
        Hammer.assign(PropagatingHammer, Hammer);

        PropagatingHammer.Manager = function (element, options) {
          var o = Object.create(_options);
          if (options) Hammer.assign(o, options);
          return propagating(new Hammer.Manager(element, o), o);
        };

        return PropagatingHammer;
      }

      // create a wrapper object which will override the functions
      // `on`, `off`, `destroy`, and `emit` of the hammer instance
      var wrapper = Object.create(hammer);

      // attach to DOM element
      var element = hammer.element;

      if(!element.hammer) element.hammer = [];
      element.hammer.push(wrapper);

      // register an event to catch the start of a gesture and store the
      // target in a singleton
      hammer.on('hammer.input', function (event) {
        if (_options.preventDefault === true || (_options.preventDefault === event.pointerType)) {
          event.preventDefault();
        }
        if (event.isFirst) {
          _firstTarget = event.target;
        }
      });

      /** @type {Object.<String, Array.<function>>} */
      wrapper._handlers = {};

      /**
       * Register a handler for one or multiple events
       * @param {String} events    A space separated string with events
       * @param {function} handler A callback function, called as handler(event)
       * @returns {Hammer.Manager} Returns the hammer instance
       */
      wrapper.on = function (events, handler) {
        // register the handler
        split(events).forEach(function (event) {
          var _handlers = wrapper._handlers[event];
          if (!_handlers) {
            wrapper._handlers[event] = _handlers = [];

            // register the static, propagated handler
            hammer.on(event, propagatedHandler);
          }
          _handlers.push(handler);
        });

        return wrapper;
      };

      /**
       * Unregister a handler for one or multiple events
       * @param {String} events      A space separated string with events
       * @param {function} [handler] Optional. The registered handler. If not
       *                             provided, all handlers for given events
       *                             are removed.
       * @returns {Hammer.Manager}   Returns the hammer instance
       */
      wrapper.off = function (events, handler) {
        // unregister the handler
        split(events).forEach(function (event) {
          var _handlers = wrapper._handlers[event];
          if (_handlers) {
            _handlers = handler ? _handlers.filter(function (h) {
              return h !== handler;
            }) : [];

            if (_handlers.length > 0) {
              wrapper._handlers[event] = _handlers;
            }
            else {
              // remove static, propagated handler
              hammer.off(event, propagatedHandler);
              delete wrapper._handlers[event];
            }
          }
        });

        return wrapper;
      };

      /**
       * Emit to the event listeners
       * @param {string} eventType
       * @param {Event} event
       */
      wrapper.emit = function(eventType, event) {
        _firstTarget = event.target;
        hammer.emit(eventType, event);
      };

      wrapper.destroy = function () {
        // Detach from DOM element
        var hammers = hammer.element.hammer;
        var idx = hammers.indexOf(wrapper);
        if(idx !== -1) hammers.splice(idx,1);
        if(!hammers.length) delete hammer.element.hammer;

        // clear all handlers
        wrapper._handlers = {};

        // call original hammer destroy
        hammer.destroy();
      };

      // split a string with space separated words
      function split(events) {
        return events.match(/[^ ]+/g);
      }

      /**
       * A static event handler, applying event propagation.
       * @param {Object} event
       */
      function propagatedHandler(event) {
        // let only a single hammer instance handle this event
        if (event.type !== 'hammer.input') {
          // it is possible that the same srcEvent is used with multiple hammer events,
          // we keep track on which events are handled in an object _handled
          if (!event.srcEvent._handled) {
            event.srcEvent._handled = {};
          }

          if (event.srcEvent._handled[event.type]) {
            return;
          }
          else {
            event.srcEvent._handled[event.type] = true;
          }
        }

        // attach a stopPropagation function to the event
        var stopped = false;
        event.stopPropagation = function () {
          stopped = true;
        };

        //wrap the srcEvent's stopPropagation to also stop hammer propagation:
        var srcStop = event.srcEvent.stopPropagation;
        if(typeof srcStop == "function") {
          event.srcEvent.stopPropagation = function(){
            srcStop();
            event.stopPropagation();
          }
        }

        // attach firstTarget property to the event
        event.firstTarget = _firstTarget;

        // propagate over all elements (until stopped)
        var elem = _firstTarget;
        while (elem && !stopped) {
          var elemHammer = elem.hammer;
          if(elemHammer){
            var _handlers;
            for(var k = 0; k < elemHammer.length; k++){
              _handlers = elemHammer[k]._handlers[event.type];
              if(_handlers) for (var i = 0; i < _handlers.length && !stopped; i++) {
                _handlers[i](event);
              }
            }
          }
          elem = elem.parentNode;
        }
      }

      return wrapper;
    };
  }));


/***/ },
/* 22 */
/***/ function(module, exports, __webpack_require__) {

  var __WEBPACK_AMD_DEFINE_RESULT__;/*! Hammer.JS - v2.0.6 - 2015-12-23
   * http://hammerjs.github.io/
   *
   * Copyright (c) 2015 Jorik Tangelder;
   * Licensed under the  license */
  (function(window, document, exportName, undefined) {
    'use strict';

  var VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o'];
  var TEST_ELEMENT = document.createElement('div');

  var TYPE_FUNCTION = 'function';

  var round = Math.round;
  var abs = Math.abs;
  var now = Date.now;

  /**
   * set a timeout with a given scope
   * @param {Function} fn
   * @param {Number} timeout
   * @param {Object} context
   * @returns {number}
   */
  function setTimeoutContext(fn, timeout, context) {
      return setTimeout(bindFn(fn, context), timeout);
  }

  /**
   * if the argument is an array, we want to execute the fn on each entry
   * if it aint an array we don't want to do a thing.
   * this is used by all the methods that accept a single and array argument.
   * @param {*|Array} arg
   * @param {String} fn
   * @param {Object} [context]
   * @returns {Boolean}
   */
  function invokeArrayArg(arg, fn, context) {
      if (Array.isArray(arg)) {
          each(arg, context[fn], context);
          return true;
      }
      return false;
  }

  /**
   * walk objects and arrays
   * @param {Object} obj
   * @param {Function} iterator
   * @param {Object} context
   */
  function each(obj, iterator, context) {
      var i;

      if (!obj) {
          return;
      }

      if (obj.forEach) {
          obj.forEach(iterator, context);
      } else if (obj.length !== undefined) {
          i = 0;
          while (i < obj.length) {
              iterator.call(context, obj[i], i, obj);
              i++;
          }
      } else {
          for (i in obj) {
              obj.hasOwnProperty(i) && iterator.call(context, obj[i], i, obj);
          }
      }
  }

  /**
   * wrap a method with a deprecation warning and stack trace
   * @param {Function} method
   * @param {String} name
   * @param {String} message
   * @returns {Function} A new function wrapping the supplied method.
   */
  function deprecate(method, name, message) {
      var deprecationMessage = 'DEPRECATED METHOD: ' + name + '\n' + message + ' AT \n';
      return function() {
          var e = new Error('get-stack-trace');
          var stack = e && e.stack ? e.stack.replace(/^[^\(]+?[\n$]/gm, '')
              .replace(/^\s+at\s+/gm, '')
              .replace(/^Object.<anonymous>\s*\(/gm, '{anonymous}()@') : 'Unknown Stack Trace';

          var log = window.console && (window.console.warn || window.console.log);
          if (log) {
              log.call(window.console, deprecationMessage, stack);
          }
          return method.apply(this, arguments);
      };
  }

  /**
   * extend object.
   * means that properties in dest will be overwritten by the ones in src.
   * @param {Object} target
   * @param {...Object} objects_to_assign
   * @returns {Object} target
   */
  var assign;
  if (typeof Object.assign !== 'function') {
      assign = function assign(target) {
          if (target === undefined || target === null) {
              throw new TypeError('Cannot convert undefined or null to object');
          }

          var output = Object(target);
          for (var index = 1; index < arguments.length; index++) {
              var source = arguments[index];
              if (source !== undefined && source !== null) {
                  for (var nextKey in source) {
                      if (source.hasOwnProperty(nextKey)) {
                          output[nextKey] = source[nextKey];
                      }
                  }
              }
          }
          return output;
      };
  } else {
      assign = Object.assign;
  }

  /**
   * extend object.
   * means that properties in dest will be overwritten by the ones in src.
   * @param {Object} dest
   * @param {Object} src
   * @param {Boolean=false} [merge]
   * @returns {Object} dest
   */
  var extend = deprecate(function extend(dest, src, merge) {
      var keys = Object.keys(src);
      var i = 0;
      while (i < keys.length) {
          if (!merge || (merge && dest[keys[i]] === undefined)) {
              dest[keys[i]] = src[keys[i]];
          }
          i++;
      }
      return dest;
  }, 'extend', 'Use `assign`.');

  /**
   * merge the values from src in the dest.
   * means that properties that exist in dest will not be overwritten by src
   * @param {Object} dest
   * @param {Object} src
   * @returns {Object} dest
   */
  var merge = deprecate(function merge(dest, src) {
      return extend(dest, src, true);
  }, 'merge', 'Use `assign`.');

  /**
   * simple class inheritance
   * @param {Function} child
   * @param {Function} base
   * @param {Object} [properties]
   */
  function inherit(child, base, properties) {
      var baseP = base.prototype,
          childP;

      childP = child.prototype = Object.create(baseP);
      childP.constructor = child;
      childP._super = baseP;

      if (properties) {
          assign(childP, properties);
      }
  }

  /**
   * simple function bind
   * @param {Function} fn
   * @param {Object} context
   * @returns {Function}
   */
  function bindFn(fn, context) {
      return function boundFn() {
          return fn.apply(context, arguments);
      };
  }

  /**
   * let a boolean value also be a function that must return a boolean
   * this first item in args will be used as the context
   * @param {Boolean|Function} val
   * @param {Array} [args]
   * @returns {Boolean}
   */
  function boolOrFn(val, args) {
      if (typeof val == TYPE_FUNCTION) {
          return val.apply(args ? args[0] || undefined : undefined, args);
      }
      return val;
  }

  /**
   * use the val2 when val1 is undefined
   * @param {*} val1
   * @param {*} val2
   * @returns {*}
   */
  function ifUndefined(val1, val2) {
      return (val1 === undefined) ? val2 : val1;
  }

  /**
   * addEventListener with multiple events at once
   * @param {EventTarget} target
   * @param {String} types
   * @param {Function} handler
   */
  function addEventListeners(target, types, handler) {
      each(splitStr(types), function(type) {
          target.addEventListener(type, handler, false);
      });
  }

  /**
   * removeEventListener with multiple events at once
   * @param {EventTarget} target
   * @param {String} types
   * @param {Function} handler
   */
  function removeEventListeners(target, types, handler) {
      each(splitStr(types), function(type) {
          target.removeEventListener(type, handler, false);
      });
  }

  /**
   * find if a node is in the given parent
   * @method hasParent
   * @param {HTMLElement} node
   * @param {HTMLElement} parent
   * @return {Boolean} found
   */
  function hasParent(node, parent) {
      while (node) {
          if (node == parent) {
              return true;
          }
          node = node.parentNode;
      }
      return false;
  }

  /**
   * small indexOf wrapper
   * @param {String} str
   * @param {String} find
   * @returns {Boolean} found
   */
  function inStr(str, find) {
      return str.indexOf(find) > -1;
  }

  /**
   * split string on whitespace
   * @param {String} str
   * @returns {Array} words
   */
  function splitStr(str) {
      return str.trim().split(/\s+/g);
  }

  /**
   * find if a array contains the object using indexOf or a simple polyFill
   * @param {Array} src
   * @param {String} find
   * @param {String} [findByKey]
   * @return {Boolean|Number} false when not found, or the index
   */
  function inArray(src, find, findByKey) {
      if (src.indexOf && !findByKey) {
          return src.indexOf(find);
      } else {
          var i = 0;
          while (i < src.length) {
              if ((findByKey && src[i][findByKey] == find) || (!findByKey && src[i] === find)) {
                  return i;
              }
              i++;
          }
          return -1;
      }
  }

  /**
   * convert array-like objects to real arrays
   * @param {Object} obj
   * @returns {Array}
   */
  function toArray(obj) {
      return Array.prototype.slice.call(obj, 0);
  }

  /**
   * unique array with objects based on a key (like 'id') or just by the array's value
   * @param {Array} src [{id:1},{id:2},{id:1}]
   * @param {String} [key]
   * @param {Boolean} [sort=False]
   * @returns {Array} [{id:1},{id:2}]
   */
  function uniqueArray(src, key, sort) {
      var results = [];
      var values = [];
      var i = 0;

      while (i < src.length) {
          var val = key ? src[i][key] : src[i];
          if (inArray(values, val) < 0) {
              results.push(src[i]);
          }
          values[i] = val;
          i++;
      }

      if (sort) {
          if (!key) {
              results = results.sort();
          } else {
              results = results.sort(function sortUniqueArray(a, b) {
                  return a[key] > b[key];
              });
          }
      }

      return results;
  }

  /**
   * get the prefixed property
   * @param {Object} obj
   * @param {String} property
   * @returns {String|Undefined} prefixed
   */
  function prefixed(obj, property) {
      var prefix, prop;
      var camelProp = property[0].toUpperCase() + property.slice(1);

      var i = 0;
      while (i < VENDOR_PREFIXES.length) {
          prefix = VENDOR_PREFIXES[i];
          prop = (prefix) ? prefix + camelProp : property;

          if (prop in obj) {
              return prop;
          }
          i++;
      }
      return undefined;
  }

  /**
   * get a unique id
   * @returns {number} uniqueId
   */
  var _uniqueId = 1;
  function uniqueId() {
      return _uniqueId++;
  }

  /**
   * get the window object of an element
   * @param {HTMLElement} element
   * @returns {DocumentView|Window}
   */
  function getWindowForElement(element) {
      var doc = element.ownerDocument || element;
      return (doc.defaultView || doc.parentWindow || window);
  }

  var MOBILE_REGEX = /mobile|tablet|ip(ad|hone|od)|android/i;

  var SUPPORT_TOUCH = ('ontouchstart' in window);
  var SUPPORT_POINTER_EVENTS = prefixed(window, 'PointerEvent') !== undefined;
  var SUPPORT_ONLY_TOUCH = SUPPORT_TOUCH && MOBILE_REGEX.test(navigator.userAgent);

  var INPUT_TYPE_TOUCH = 'touch';
  var INPUT_TYPE_PEN = 'pen';
  var INPUT_TYPE_MOUSE = 'mouse';
  var INPUT_TYPE_KINECT = 'kinect';

  var COMPUTE_INTERVAL = 25;

  var INPUT_START = 1;
  var INPUT_MOVE = 2;
  var INPUT_END = 4;
  var INPUT_CANCEL = 8;

  var DIRECTION_NONE = 1;
  var DIRECTION_LEFT = 2;
  var DIRECTION_RIGHT = 4;
  var DIRECTION_UP = 8;
  var DIRECTION_DOWN = 16;

  var DIRECTION_HORIZONTAL = DIRECTION_LEFT | DIRECTION_RIGHT;
  var DIRECTION_VERTICAL = DIRECTION_UP | DIRECTION_DOWN;
  var DIRECTION_ALL = DIRECTION_HORIZONTAL | DIRECTION_VERTICAL;

  var PROPS_XY = ['x', 'y'];
  var PROPS_CLIENT_XY = ['clientX', 'clientY'];

  /**
   * create new input type manager
   * @param {Manager} manager
   * @param {Function} callback
   * @returns {Input}
   * @constructor
   */
  function Input(manager, callback) {
      var self = this;
      this.manager = manager;
      this.callback = callback;
      this.element = manager.element;
      this.target = manager.options.inputTarget;

      // smaller wrapper around the handler, for the scope and the enabled state of the manager,
      // so when disabled the input events are completely bypassed.
      this.domHandler = function(ev) {
          if (boolOrFn(manager.options.enable, [manager])) {
              self.handler(ev);
          }
      };

      this.init();

  }

  Input.prototype = {
      /**
       * should handle the inputEvent data and trigger the callback
       * @virtual
       */
      handler: function() { },

      /**
       * bind the events
       */
      init: function() {
          this.evEl && addEventListeners(this.element, this.evEl, this.domHandler);
          this.evTarget && addEventListeners(this.target, this.evTarget, this.domHandler);
          this.evWin && addEventListeners(getWindowForElement(this.element), this.evWin, this.domHandler);
      },

      /**
       * unbind the events
       */
      destroy: function() {
          this.evEl && removeEventListeners(this.element, this.evEl, this.domHandler);
          this.evTarget && removeEventListeners(this.target, this.evTarget, this.domHandler);
          this.evWin && removeEventListeners(getWindowForElement(this.element), this.evWin, this.domHandler);
      }
  };

  /**
   * create new input type manager
   * called by the Manager constructor
   * @param {Hammer} manager
   * @returns {Input}
   */
  function createInputInstance(manager) {
      var Type;
      var inputClass = manager.options.inputClass;

      if (inputClass) {
          Type = inputClass;
      } else if (SUPPORT_POINTER_EVENTS) {
          Type = PointerEventInput;
      } else if (SUPPORT_ONLY_TOUCH) {
          Type = TouchInput;
      } else if (!SUPPORT_TOUCH) {
          Type = MouseInput;
      } else {
          Type = TouchMouseInput;
      }
      return new (Type)(manager, inputHandler);
  }

  /**
   * handle input events
   * @param {Manager} manager
   * @param {String} eventType
   * @param {Object} input
   */
  function inputHandler(manager, eventType, input) {
      var pointersLen = input.pointers.length;
      var changedPointersLen = input.changedPointers.length;
      var isFirst = (eventType & INPUT_START && (pointersLen - changedPointersLen === 0));
      var isFinal = (eventType & (INPUT_END | INPUT_CANCEL) && (pointersLen - changedPointersLen === 0));

      input.isFirst = !!isFirst;
      input.isFinal = !!isFinal;

      if (isFirst) {
          manager.session = {};
      }

      // source event is the normalized value of the domEvents
      // like 'touchstart, mouseup, pointerdown'
      input.eventType = eventType;

      // compute scale, rotation etc
      computeInputData(manager, input);

      // emit secret event
      manager.emit('hammer.input', input);

      manager.recognize(input);
      manager.session.prevInput = input;
  }

  /**
   * extend the data with some usable properties like scale, rotate, velocity etc
   * @param {Object} manager
   * @param {Object} input
   */
  function computeInputData(manager, input) {
      var session = manager.session;
      var pointers = input.pointers;
      var pointersLength = pointers.length;

      // store the first input to calculate the distance and direction
      if (!session.firstInput) {
          session.firstInput = simpleCloneInputData(input);
      }

      // to compute scale and rotation we need to store the multiple touches
      if (pointersLength > 1 && !session.firstMultiple) {
          session.firstMultiple = simpleCloneInputData(input);
      } else if (pointersLength === 1) {
          session.firstMultiple = false;
      }

      var firstInput = session.firstInput;
      var firstMultiple = session.firstMultiple;
      var offsetCenter = firstMultiple ? firstMultiple.center : firstInput.center;

      var center = input.center = getCenter(pointers);
      input.timeStamp = now();
      input.deltaTime = input.timeStamp - firstInput.timeStamp;

      input.angle = getAngle(offsetCenter, center);
      input.distance = getDistance(offsetCenter, center);

      computeDeltaXY(session, input);
      input.offsetDirection = getDirection(input.deltaX, input.deltaY);

      var overallVelocity = getVelocity(input.deltaTime, input.deltaX, input.deltaY);
      input.overallVelocityX = overallVelocity.x;
      input.overallVelocityY = overallVelocity.y;
      input.overallVelocity = (abs(overallVelocity.x) > abs(overallVelocity.y)) ? overallVelocity.x : overallVelocity.y;

      input.scale = firstMultiple ? getScale(firstMultiple.pointers, pointers) : 1;
      input.rotation = firstMultiple ? getRotation(firstMultiple.pointers, pointers) : 0;

      input.maxPointers = !session.prevInput ? input.pointers.length : ((input.pointers.length >
          session.prevInput.maxPointers) ? input.pointers.length : session.prevInput.maxPointers);

      computeIntervalInputData(session, input);

      // find the correct target
      var target = manager.element;
      if (hasParent(input.srcEvent.target, target)) {
          target = input.srcEvent.target;
      }
      input.target = target;
  }

  function computeDeltaXY(session, input) {
      var center = input.center;
      var offset = session.offsetDelta || {};
      var prevDelta = session.prevDelta || {};
      var prevInput = session.prevInput || {};

      if (input.eventType === INPUT_START || prevInput.eventType === INPUT_END) {
          prevDelta = session.prevDelta = {
              x: prevInput.deltaX || 0,
              y: prevInput.deltaY || 0
          };

          offset = session.offsetDelta = {
              x: center.x,
              y: center.y
          };
      }

      input.deltaX = prevDelta.x + (center.x - offset.x);
      input.deltaY = prevDelta.y + (center.y - offset.y);
  }

  /**
   * velocity is calculated every x ms
   * @param {Object} session
   * @param {Object} input
   */
  function computeIntervalInputData(session, input) {
      var last = session.lastInterval || input,
          deltaTime = input.timeStamp - last.timeStamp,
          velocity, velocityX, velocityY, direction;

      if (input.eventType != INPUT_CANCEL && (deltaTime > COMPUTE_INTERVAL || last.velocity === undefined)) {
          var deltaX = input.deltaX - last.deltaX;
          var deltaY = input.deltaY - last.deltaY;

          var v = getVelocity(deltaTime, deltaX, deltaY);
          velocityX = v.x;
          velocityY = v.y;
          velocity = (abs(v.x) > abs(v.y)) ? v.x : v.y;
          direction = getDirection(deltaX, deltaY);

          session.lastInterval = input;
      } else {
          // use latest velocity info if it doesn't overtake a minimum period
          velocity = last.velocity;
          velocityX = last.velocityX;
          velocityY = last.velocityY;
          direction = last.direction;
      }

      input.velocity = velocity;
      input.velocityX = velocityX;
      input.velocityY = velocityY;
      input.direction = direction;
  }

  /**
   * create a simple clone from the input used for storage of firstInput and firstMultiple
   * @param {Object} input
   * @returns {Object} clonedInputData
   */
  function simpleCloneInputData(input) {
      // make a simple copy of the pointers because we will get a reference if we don't
      // we only need clientXY for the calculations
      var pointers = [];
      var i = 0;
      while (i < input.pointers.length) {
          pointers[i] = {
              clientX: round(input.pointers[i].clientX),
              clientY: round(input.pointers[i].clientY)
          };
          i++;
      }

      return {
          timeStamp: now(),
          pointers: pointers,
          center: getCenter(pointers),
          deltaX: input.deltaX,
          deltaY: input.deltaY
      };
  }

  /**
   * get the center of all the pointers
   * @param {Array} pointers
   * @return {Object} center contains `x` and `y` properties
   */
  function getCenter(pointers) {
      var pointersLength = pointers.length;

      // no need to loop when only one touch
      if (pointersLength === 1) {
          return {
              x: round(pointers[0].clientX),
              y: round(pointers[0].clientY)
          };
      }

      var x = 0, y = 0, i = 0;
      while (i < pointersLength) {
          x += pointers[i].clientX;
          y += pointers[i].clientY;
          i++;
      }

      return {
          x: round(x / pointersLength),
          y: round(y / pointersLength)
      };
  }

  /**
   * calculate the velocity between two points. unit is in px per ms.
   * @param {Number} deltaTime
   * @param {Number} x
   * @param {Number} y
   * @return {Object} velocity `x` and `y`
   */
  function getVelocity(deltaTime, x, y) {
      return {
          x: x / deltaTime || 0,
          y: y / deltaTime || 0
      };
  }

  /**
   * get the direction between two points
   * @param {Number} x
   * @param {Number} y
   * @return {Number} direction
   */
  function getDirection(x, y) {
      if (x === y) {
          return DIRECTION_NONE;
      }

      if (abs(x) >= abs(y)) {
          return x < 0 ? DIRECTION_LEFT : DIRECTION_RIGHT;
      }
      return y < 0 ? DIRECTION_UP : DIRECTION_DOWN;
  }

  /**
   * calculate the absolute distance between two points
   * @param {Object} p1 {x, y}
   * @param {Object} p2 {x, y}
   * @param {Array} [props] containing x and y keys
   * @return {Number} distance
   */
  function getDistance(p1, p2, props) {
      if (!props) {
          props = PROPS_XY;
      }
      var x = p2[props[0]] - p1[props[0]],
          y = p2[props[1]] - p1[props[1]];

      return Math.sqrt((x * x) + (y * y));
  }

  /**
   * calculate the angle between two coordinates
   * @param {Object} p1
   * @param {Object} p2
   * @param {Array} [props] containing x and y keys
   * @return {Number} angle
   */
  function getAngle(p1, p2, props) {
      if (!props) {
          props = PROPS_XY;
      }
      var x = p2[props[0]] - p1[props[0]],
          y = p2[props[1]] - p1[props[1]];
      return Math.atan2(y, x) * 180 / Math.PI;
  }

  /**
   * calculate the rotation degrees between two pointersets
   * @param {Array} start array of pointers
   * @param {Array} end array of pointers
   * @return {Number} rotation
   */
  function getRotation(start, end) {
      return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY);
  }

  /**
   * calculate the scale factor between two pointersets
   * no scale is 1, and goes down to 0 when pinched together, and bigger when pinched out
   * @param {Array} start array of pointers
   * @param {Array} end array of pointers
   * @return {Number} scale
   */
  function getScale(start, end) {
      return getDistance(end[0], end[1], PROPS_CLIENT_XY) / getDistance(start[0], start[1], PROPS_CLIENT_XY);
  }

  var MOUSE_INPUT_MAP = {
      mousedown: INPUT_START,
      mousemove: INPUT_MOVE,
      mouseup: INPUT_END
  };

  var MOUSE_ELEMENT_EVENTS = 'mousedown';
  var MOUSE_WINDOW_EVENTS = 'mousemove mouseup';

  /**
   * Mouse events input
   * @constructor
   * @extends Input
   */
  function MouseInput() {
      this.evEl = MOUSE_ELEMENT_EVENTS;
      this.evWin = MOUSE_WINDOW_EVENTS;

      this.allow = true; // used by Input.TouchMouse to disable mouse events
      this.pressed = false; // mousedown state

      Input.apply(this, arguments);
  }

  inherit(MouseInput, Input, {
      /**
       * handle mouse events
       * @param {Object} ev
       */
      handler: function MEhandler(ev) {
          var eventType = MOUSE_INPUT_MAP[ev.type];

          // on start we want to have the left mouse button down
          if (eventType & INPUT_START && ev.button === 0) {
              this.pressed = true;
          }

          if (eventType & INPUT_MOVE && ev.which !== 1) {
              eventType = INPUT_END;
          }

          // mouse must be down, and mouse events are allowed (see the TouchMouse input)
          if (!this.pressed || !this.allow) {
              return;
          }

          if (eventType & INPUT_END) {
              this.pressed = false;
          }

          this.callback(this.manager, eventType, {
              pointers: [ev],
              changedPointers: [ev],
              pointerType: INPUT_TYPE_MOUSE,
              srcEvent: ev
          });
      }
  });

  var POINTER_INPUT_MAP = {
      pointerdown: INPUT_START,
      pointermove: INPUT_MOVE,
      pointerup: INPUT_END,
      pointercancel: INPUT_CANCEL,
      pointerout: INPUT_CANCEL
  };

  // in IE10 the pointer types is defined as an enum
  var IE10_POINTER_TYPE_ENUM = {
      2: INPUT_TYPE_TOUCH,
      3: INPUT_TYPE_PEN,
      4: INPUT_TYPE_MOUSE,
      5: INPUT_TYPE_KINECT // see https://twitter.com/jacobrossi/status/480596438489890816
  };

  var POINTER_ELEMENT_EVENTS = 'pointerdown';
  var POINTER_WINDOW_EVENTS = 'pointermove pointerup pointercancel';

  // IE10 has prefixed support, and case-sensitive
  if (window.MSPointerEvent && !window.PointerEvent) {
      POINTER_ELEMENT_EVENTS = 'MSPointerDown';
      POINTER_WINDOW_EVENTS = 'MSPointerMove MSPointerUp MSPointerCancel';
  }

  /**
   * Pointer events input
   * @constructor
   * @extends Input
   */
  function PointerEventInput() {
      this.evEl = POINTER_ELEMENT_EVENTS;
      this.evWin = POINTER_WINDOW_EVENTS;

      Input.apply(this, arguments);

      this.store = (this.manager.session.pointerEvents = []);
  }

  inherit(PointerEventInput, Input, {
      /**
       * handle mouse events
       * @param {Object} ev
       */
      handler: function PEhandler(ev) {
          var store = this.store;
          var removePointer = false;

          var eventTypeNormalized = ev.type.toLowerCase().replace('ms', '');
          var eventType = POINTER_INPUT_MAP[eventTypeNormalized];
          var pointerType = IE10_POINTER_TYPE_ENUM[ev.pointerType] || ev.pointerType;

          var isTouch = (pointerType == INPUT_TYPE_TOUCH);

          // get index of the event in the store
          var storeIndex = inArray(store, ev.pointerId, 'pointerId');

          // start and mouse must be down
          if (eventType & INPUT_START && (ev.button === 0 || isTouch)) {
              if (storeIndex < 0) {
                  store.push(ev);
                  storeIndex = store.length - 1;
              }
          } else if (eventType & (INPUT_END | INPUT_CANCEL)) {
              removePointer = true;
          }

          // it not found, so the pointer hasn't been down (so it's probably a hover)
          if (storeIndex < 0) {
              return;
          }

          // update the event in the store
          store[storeIndex] = ev;

          this.callback(this.manager, eventType, {
              pointers: store,
              changedPointers: [ev],
              pointerType: pointerType,
              srcEvent: ev
          });

          if (removePointer) {
              // remove from the store
              store.splice(storeIndex, 1);
          }
      }
  });

  var SINGLE_TOUCH_INPUT_MAP = {
      touchstart: INPUT_START,
      touchmove: INPUT_MOVE,
      touchend: INPUT_END,
      touchcancel: INPUT_CANCEL
  };

  var SINGLE_TOUCH_TARGET_EVENTS = 'touchstart';
  var SINGLE_TOUCH_WINDOW_EVENTS = 'touchstart touchmove touchend touchcancel';

  /**
   * Touch events input
   * @constructor
   * @extends Input
   */
  function SingleTouchInput() {
      this.evTarget = SINGLE_TOUCH_TARGET_EVENTS;
      this.evWin = SINGLE_TOUCH_WINDOW_EVENTS;
      this.started = false;

      Input.apply(this, arguments);
  }

  inherit(SingleTouchInput, Input, {
      handler: function TEhandler(ev) {
          var type = SINGLE_TOUCH_INPUT_MAP[ev.type];

          // should we handle the touch events?
          if (type === INPUT_START) {
              this.started = true;
          }

          if (!this.started) {
              return;
          }

          var touches = normalizeSingleTouches.call(this, ev, type);

          // when done, reset the started state
          if (type & (INPUT_END | INPUT_CANCEL) && touches[0].length - touches[1].length === 0) {
              this.started = false;
          }

          this.callback(this.manager, type, {
              pointers: touches[0],
              changedPointers: touches[1],
              pointerType: INPUT_TYPE_TOUCH,
              srcEvent: ev
          });
      }
  });

  /**
   * @this {TouchInput}
   * @param {Object} ev
   * @param {Number} type flag
   * @returns {undefined|Array} [all, changed]
   */
  function normalizeSingleTouches(ev, type) {
      var all = toArray(ev.touches);
      var changed = toArray(ev.changedTouches);

      if (type & (INPUT_END | INPUT_CANCEL)) {
          all = uniqueArray(all.concat(changed), 'identifier', true);
      }

      return [all, changed];
  }

  var TOUCH_INPUT_MAP = {
      touchstart: INPUT_START,
      touchmove: INPUT_MOVE,
      touchend: INPUT_END,
      touchcancel: INPUT_CANCEL
  };

  var TOUCH_TARGET_EVENTS = 'touchstart touchmove touchend touchcancel';

  /**
   * Multi-user touch events input
   * @constructor
   * @extends Input
   */
  function TouchInput() {
      this.evTarget = TOUCH_TARGET_EVENTS;
      this.targetIds = {};

      Input.apply(this, arguments);
  }

  inherit(TouchInput, Input, {
      handler: function MTEhandler(ev) {
          var type = TOUCH_INPUT_MAP[ev.type];
          var touches = getTouches.call(this, ev, type);
          if (!touches) {
              return;
          }

          this.callback(this.manager, type, {
              pointers: touches[0],
              changedPointers: touches[1],
              pointerType: INPUT_TYPE_TOUCH,
              srcEvent: ev
          });
      }
  });

  /**
   * @this {TouchInput}
   * @param {Object} ev
   * @param {Number} type flag
   * @returns {undefined|Array} [all, changed]
   */
  function getTouches(ev, type) {
      var allTouches = toArray(ev.touches);
      var targetIds = this.targetIds;

      // when there is only one touch, the process can be simplified
      if (type & (INPUT_START | INPUT_MOVE) && allTouches.length === 1) {
          targetIds[allTouches[0].identifier] = true;
          return [allTouches, allTouches];
      }

      var i,
          targetTouches,
          changedTouches = toArray(ev.changedTouches),
          changedTargetTouches = [],
          target = this.target;

      // get target touches from touches
      targetTouches = allTouches.filter(function(touch) {
          return hasParent(touch.target, target);
      });

      // collect touches
      if (type === INPUT_START) {
          i = 0;
          while (i < targetTouches.length) {
              targetIds[targetTouches[i].identifier] = true;
              i++;
          }
      }

      // filter changed touches to only contain touches that exist in the collected target ids
      i = 0;
      while (i < changedTouches.length) {
          if (targetIds[changedTouches[i].identifier]) {
              changedTargetTouches.push(changedTouches[i]);
          }

          // cleanup removed touches
          if (type & (INPUT_END | INPUT_CANCEL)) {
              delete targetIds[changedTouches[i].identifier];
          }
          i++;
      }

      if (!changedTargetTouches.length) {
          return;
      }

      return [
          // merge targetTouches with changedTargetTouches so it contains ALL touches, including 'end' and 'cancel'
          uniqueArray(targetTouches.concat(changedTargetTouches), 'identifier', true),
          changedTargetTouches
      ];
  }

  /**
   * Combined touch and mouse input
   *
   * Touch has a higher priority then mouse, and while touching no mouse events are allowed.
   * This because touch devices also emit mouse events while doing a touch.
   *
   * @constructor
   * @extends Input
   */
  function TouchMouseInput() {
      Input.apply(this, arguments);

      var handler = bindFn(this.handler, this);
      this.touch = new TouchInput(this.manager, handler);
      this.mouse = new MouseInput(this.manager, handler);
  }

  inherit(TouchMouseInput, Input, {
      /**
       * handle mouse and touch events
       * @param {Hammer} manager
       * @param {String} inputEvent
       * @param {Object} inputData
       */
      handler: function TMEhandler(manager, inputEvent, inputData) {
          var isTouch = (inputData.pointerType == INPUT_TYPE_TOUCH),
              isMouse = (inputData.pointerType == INPUT_TYPE_MOUSE);

          // when we're in a touch event, so  block all upcoming mouse events
          // most mobile browser also emit mouseevents, right after touchstart
          if (isTouch) {
              this.mouse.allow = false;
          } else if (isMouse && !this.mouse.allow) {
              return;
          }

          // reset the allowMouse when we're done
          if (inputEvent & (INPUT_END | INPUT_CANCEL)) {
              this.mouse.allow = true;
          }

          this.callback(manager, inputEvent, inputData);
      },

      /**
       * remove the event listeners
       */
      destroy: function destroy() {
          this.touch.destroy();
          this.mouse.destroy();
      }
  });

  var PREFIXED_TOUCH_ACTION = prefixed(TEST_ELEMENT.style, 'touchAction');
  var NATIVE_TOUCH_ACTION = PREFIXED_TOUCH_ACTION !== undefined;

  // magical touchAction value
  var TOUCH_ACTION_COMPUTE = 'compute';
  var TOUCH_ACTION_AUTO = 'auto';
  var TOUCH_ACTION_MANIPULATION = 'manipulation'; // not implemented
  var TOUCH_ACTION_NONE = 'none';
  var TOUCH_ACTION_PAN_X = 'pan-x';
  var TOUCH_ACTION_PAN_Y = 'pan-y';

  /**
   * Touch Action
   * sets the touchAction property or uses the js alternative
   * @param {Manager} manager
   * @param {String} value
   * @constructor
   */
  function TouchAction(manager, value) {
      this.manager = manager;
      this.set(value);
  }

  TouchAction.prototype = {
      /**
       * set the touchAction value on the element or enable the polyfill
       * @param {String} value
       */
      set: function(value) {
          // find out the touch-action by the event handlers
          if (value == TOUCH_ACTION_COMPUTE) {
              value = this.compute();
          }

          if (NATIVE_TOUCH_ACTION && this.manager.element.style) {
              this.manager.element.style[PREFIXED_TOUCH_ACTION] = value;
          }
          this.actions = value.toLowerCase().trim();
      },

      /**
       * just re-set the touchAction value
       */
      update: function() {
          this.set(this.manager.options.touchAction);
      },

      /**
       * compute the value for the touchAction property based on the recognizer's settings
       * @returns {String} value
       */
      compute: function() {
          var actions = [];
          each(this.manager.recognizers, function(recognizer) {
              if (boolOrFn(recognizer.options.enable, [recognizer])) {
                  actions = actions.concat(recognizer.getTouchAction());
              }
          });
          return cleanTouchActions(actions.join(' '));
      },

      /**
       * this method is called on each input cycle and provides the preventing of the browser behavior
       * @param {Object} input
       */
      preventDefaults: function(input) {
          // not needed with native support for the touchAction property
          if (NATIVE_TOUCH_ACTION) {
              return;
          }

          var srcEvent = input.srcEvent;
          var direction = input.offsetDirection;

          // if the touch action did prevented once this session
          if (this.manager.session.prevented) {
              srcEvent.preventDefault();
              return;
          }

          var actions = this.actions;
          var hasNone = inStr(actions, TOUCH_ACTION_NONE);
          var hasPanY = inStr(actions, TOUCH_ACTION_PAN_Y);
          var hasPanX = inStr(actions, TOUCH_ACTION_PAN_X);

          if (hasNone) {
              //do not prevent defaults if this is a tap gesture

              var isTapPointer = input.pointers.length === 1;
              var isTapMovement = input.distance < 2;
              var isTapTouchTime = input.deltaTime < 250;

              if (isTapPointer && isTapMovement && isTapTouchTime) {
                  return;
              }
          }

          if (hasPanX && hasPanY) {
              // `pan-x pan-y` means browser handles all scrolling/panning, do not prevent
              return;
          }

          if (hasNone ||
              (hasPanY && direction & DIRECTION_HORIZONTAL) ||
              (hasPanX && direction & DIRECTION_VERTICAL)) {
              return this.preventSrc(srcEvent);
          }
      },

      /**
       * call preventDefault to prevent the browser's default behavior (scrolling in most cases)
       * @param {Object} srcEvent
       */
      preventSrc: function(srcEvent) {
          this.manager.session.prevented = true;
          srcEvent.preventDefault();
      }
  };

  /**
   * when the touchActions are collected they are not a valid value, so we need to clean things up. *
   * @param {String} actions
   * @returns {*}
   */
  function cleanTouchActions(actions) {
      // none
      if (inStr(actions, TOUCH_ACTION_NONE)) {
          return TOUCH_ACTION_NONE;
      }

      var hasPanX = inStr(actions, TOUCH_ACTION_PAN_X);
      var hasPanY = inStr(actions, TOUCH_ACTION_PAN_Y);

      // if both pan-x and pan-y are set (different recognizers
      // for different directions, e.g. horizontal pan but vertical swipe?)
      // we need none (as otherwise with pan-x pan-y combined none of these
      // recognizers will work, since the browser would handle all panning
      if (hasPanX && hasPanY) {
          return TOUCH_ACTION_NONE;
      }

      // pan-x OR pan-y
      if (hasPanX || hasPanY) {
          return hasPanX ? TOUCH_ACTION_PAN_X : TOUCH_ACTION_PAN_Y;
      }

      // manipulation
      if (inStr(actions, TOUCH_ACTION_MANIPULATION)) {
          return TOUCH_ACTION_MANIPULATION;
      }

      return TOUCH_ACTION_AUTO;
  }

  /**
   * Recognizer flow explained; *
   * All recognizers have the initial state of POSSIBLE when a input session starts.
   * The definition of a input session is from the first input until the last input, with all it's movement in it. *
   * Example session for mouse-input: mousedown -> mousemove -> mouseup
   *
   * On each recognizing cycle (see Manager.recognize) the .recognize() method is executed
   * which determines with state it should be.
   *
   * If the recognizer has the state FAILED, CANCELLED or RECOGNIZED (equals ENDED), it is reset to
   * POSSIBLE to give it another change on the next cycle.
   *
   *               Possible
   *                  |
   *            +-----+---------------+
   *            |                     |
   *      +-----+-----+               |
   *      |           |               |
   *   Failed      Cancelled          |
   *                          +-------+------+
   *                          |              |
   *                      Recognized       Began
   *                                         |
   *                                      Changed
   *                                         |
   *                                  Ended/Recognized
   */
  var STATE_POSSIBLE = 1;
  var STATE_BEGAN = 2;
  var STATE_CHANGED = 4;
  var STATE_ENDED = 8;
  var STATE_RECOGNIZED = STATE_ENDED;
  var STATE_CANCELLED = 16;
  var STATE_FAILED = 32;

  /**
   * Recognizer
   * Every recognizer needs to extend from this class.
   * @constructor
   * @param {Object} options
   */
  function Recognizer(options) {
      this.options = assign({}, this.defaults, options || {});

      this.id = uniqueId();

      this.manager = null;

      // default is enable true
      this.options.enable = ifUndefined(this.options.enable, true);

      this.state = STATE_POSSIBLE;

      this.simultaneous = {};
      this.requireFail = [];
  }

  Recognizer.prototype = {
      /**
       * @virtual
       * @type {Object}
       */
      defaults: {},

      /**
       * set options
       * @param {Object} options
       * @return {Recognizer}
       */
      set: function(options) {
          assign(this.options, options);

          // also update the touchAction, in case something changed about the directions/enabled state
          this.manager && this.manager.touchAction.update();
          return this;
      },

      /**
       * recognize simultaneous with an other recognizer.
       * @param {Recognizer} otherRecognizer
       * @returns {Recognizer} this
       */
      recognizeWith: function(otherRecognizer) {
          if (invokeArrayArg(otherRecognizer, 'recognizeWith', this)) {
              return this;
          }

          var simultaneous = this.simultaneous;
          otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
          if (!simultaneous[otherRecognizer.id]) {
              simultaneous[otherRecognizer.id] = otherRecognizer;
              otherRecognizer.recognizeWith(this);
          }
          return this;
      },

      /**
       * drop the simultaneous link. it doesnt remove the link on the other recognizer.
       * @param {Recognizer} otherRecognizer
       * @returns {Recognizer} this
       */
      dropRecognizeWith: function(otherRecognizer) {
          if (invokeArrayArg(otherRecognizer, 'dropRecognizeWith', this)) {
              return this;
          }

          otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
          delete this.simultaneous[otherRecognizer.id];
          return this;
      },

      /**
       * recognizer can only run when an other is failing
       * @param {Recognizer} otherRecognizer
       * @returns {Recognizer} this
       */
      requireFailure: function(otherRecognizer) {
          if (invokeArrayArg(otherRecognizer, 'requireFailure', this)) {
              return this;
          }

          var requireFail = this.requireFail;
          otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
          if (inArray(requireFail, otherRecognizer) === -1) {
              requireFail.push(otherRecognizer);
              otherRecognizer.requireFailure(this);
          }
          return this;
      },

      /**
       * drop the requireFailure link. it does not remove the link on the other recognizer.
       * @param {Recognizer} otherRecognizer
       * @returns {Recognizer} this
       */
      dropRequireFailure: function(otherRecognizer) {
          if (invokeArrayArg(otherRecognizer, 'dropRequireFailure', this)) {
              return this;
          }

          otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
          var index = inArray(this.requireFail, otherRecognizer);
          if (index > -1) {
              this.requireFail.splice(index, 1);
          }
          return this;
      },

      /**
       * has require failures boolean
       * @returns {boolean}
       */
      hasRequireFailures: function() {
          return this.requireFail.length > 0;
      },

      /**
       * if the recognizer can recognize simultaneous with an other recognizer
       * @param {Recognizer} otherRecognizer
       * @returns {Boolean}
       */
      canRecognizeWith: function(otherRecognizer) {
          return !!this.simultaneous[otherRecognizer.id];
      },

      /**
       * You should use `tryEmit` instead of `emit` directly to check
       * that all the needed recognizers has failed before emitting.
       * @param {Object} input
       */
      emit: function(input) {
          var self = this;
          var state = this.state;

          function emit(event) {
              self.manager.emit(event, input);
          }

          // 'panstart' and 'panmove'
          if (state < STATE_ENDED) {
              emit(self.options.event + stateStr(state));
          }

          emit(self.options.event); // simple 'eventName' events

          if (input.additionalEvent) { // additional event(panleft, panright, pinchin, pinchout...)
              emit(input.additionalEvent);
          }

          // panend and pancancel
          if (state >= STATE_ENDED) {
              emit(self.options.event + stateStr(state));
          }
      },

      /**
       * Check that all the require failure recognizers has failed,
       * if true, it emits a gesture event,
       * otherwise, setup the state to FAILED.
       * @param {Object} input
       */
      tryEmit: function(input) {
          if (this.canEmit()) {
              return this.emit(input);
          }
          // it's failing anyway
          this.state = STATE_FAILED;
      },

      /**
       * can we emit?
       * @returns {boolean}
       */
      canEmit: function() {
          var i = 0;
          while (i < this.requireFail.length) {
              if (!(this.requireFail[i].state & (STATE_FAILED | STATE_POSSIBLE))) {
                  return false;
              }
              i++;
          }
          return true;
      },

      /**
       * update the recognizer
       * @param {Object} inputData
       */
      recognize: function(inputData) {
          // make a new copy of the inputData
          // so we can change the inputData without messing up the other recognizers
          var inputDataClone = assign({}, inputData);

          // is is enabled and allow recognizing?
          if (!boolOrFn(this.options.enable, [this, inputDataClone])) {
              this.reset();
              this.state = STATE_FAILED;
              return;
          }

          // reset when we've reached the end
          if (this.state & (STATE_RECOGNIZED | STATE_CANCELLED | STATE_FAILED)) {
              this.state = STATE_POSSIBLE;
          }

          this.state = this.process(inputDataClone);

          // the recognizer has recognized a gesture
          // so trigger an event
          if (this.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED | STATE_CANCELLED)) {
              this.tryEmit(inputDataClone);
          }
      },

      /**
       * return the state of the recognizer
       * the actual recognizing happens in this method
       * @virtual
       * @param {Object} inputData
       * @returns {Const} STATE
       */
      process: function(inputData) { }, // jshint ignore:line

      /**
       * return the preferred touch-action
       * @virtual
       * @returns {Array}
       */
      getTouchAction: function() { },

      /**
       * called when the gesture isn't allowed to recognize
       * like when another is being recognized or it is disabled
       * @virtual
       */
      reset: function() { }
  };

  /**
   * get a usable string, used as event postfix
   * @param {Const} state
   * @returns {String} state
   */
  function stateStr(state) {
      if (state & STATE_CANCELLED) {
          return 'cancel';
      } else if (state & STATE_ENDED) {
          return 'end';
      } else if (state & STATE_CHANGED) {
          return 'move';
      } else if (state & STATE_BEGAN) {
          return 'start';
      }
      return '';
  }

  /**
   * direction cons to string
   * @param {Const} direction
   * @returns {String}
   */
  function directionStr(direction) {
      if (direction == DIRECTION_DOWN) {
          return 'down';
      } else if (direction == DIRECTION_UP) {
          return 'up';
      } else if (direction == DIRECTION_LEFT) {
          return 'left';
      } else if (direction == DIRECTION_RIGHT) {
          return 'right';
      }
      return '';
  }

  /**
   * get a recognizer by name if it is bound to a manager
   * @param {Recognizer|String} otherRecognizer
   * @param {Recognizer} recognizer
   * @returns {Recognizer}
   */
  function getRecognizerByNameIfManager(otherRecognizer, recognizer) {
      var manager = recognizer.manager;
      if (manager) {
          return manager.get(otherRecognizer);
      }
      return otherRecognizer;
  }

  /**
   * This recognizer is just used as a base for the simple attribute recognizers.
   * @constructor
   * @extends Recognizer
   */
  function AttrRecognizer() {
      Recognizer.apply(this, arguments);
  }

  inherit(AttrRecognizer, Recognizer, {
      /**
       * @namespace
       * @memberof AttrRecognizer
       */
      defaults: {
          /**
           * @type {Number}
           * @default 1
           */
          pointers: 1
      },

      /**
       * Used to check if it the recognizer receives valid input, like input.distance > 10.
       * @memberof AttrRecognizer
       * @param {Object} input
       * @returns {Boolean} recognized
       */
      attrTest: function(input) {
          var optionPointers = this.options.pointers;
          return optionPointers === 0 || input.pointers.length === optionPointers;
      },

      /**
       * Process the input and return the state for the recognizer
       * @memberof AttrRecognizer
       * @param {Object} input
       * @returns {*} State
       */
      process: function(input) {
          var state = this.state;
          var eventType = input.eventType;

          var isRecognized = state & (STATE_BEGAN | STATE_CHANGED);
          var isValid = this.attrTest(input);

          // on cancel input and we've recognized before, return STATE_CANCELLED
          if (isRecognized && (eventType & INPUT_CANCEL || !isValid)) {
              return state | STATE_CANCELLED;
          } else if (isRecognized || isValid) {
              if (eventType & INPUT_END) {
                  return state | STATE_ENDED;
              } else if (!(state & STATE_BEGAN)) {
                  return STATE_BEGAN;
              }
              return state | STATE_CHANGED;
          }
          return STATE_FAILED;
      }
  });

  /**
   * Pan
   * Recognized when the pointer is down and moved in the allowed direction.
   * @constructor
   * @extends AttrRecognizer
   */
  function PanRecognizer() {
      AttrRecognizer.apply(this, arguments);

      this.pX = null;
      this.pY = null;
  }

  inherit(PanRecognizer, AttrRecognizer, {
      /**
       * @namespace
       * @memberof PanRecognizer
       */
      defaults: {
          event: 'pan',
          threshold: 10,
          pointers: 1,
          direction: DIRECTION_ALL
      },

      getTouchAction: function() {
          var direction = this.options.direction;
          var actions = [];
          if (direction & DIRECTION_HORIZONTAL) {
              actions.push(TOUCH_ACTION_PAN_Y);
          }
          if (direction & DIRECTION_VERTICAL) {
              actions.push(TOUCH_ACTION_PAN_X);
          }
          return actions;
      },

      directionTest: function(input) {
          var options = this.options;
          var hasMoved = true;
          var distance = input.distance;
          var direction = input.direction;
          var x = input.deltaX;
          var y = input.deltaY;

          // lock to axis?
          if (!(direction & options.direction)) {
              if (options.direction & DIRECTION_HORIZONTAL) {
                  direction = (x === 0) ? DIRECTION_NONE : (x < 0) ? DIRECTION_LEFT : DIRECTION_RIGHT;
                  hasMoved = x != this.pX;
                  distance = Math.abs(input.deltaX);
              } else {
                  direction = (y === 0) ? DIRECTION_NONE : (y < 0) ? DIRECTION_UP : DIRECTION_DOWN;
                  hasMoved = y != this.pY;
                  distance = Math.abs(input.deltaY);
              }
          }
          input.direction = direction;
          return hasMoved && distance > options.threshold && direction & options.direction;
      },

      attrTest: function(input) {
          return AttrRecognizer.prototype.attrTest.call(this, input) &&
              (this.state & STATE_BEGAN || (!(this.state & STATE_BEGAN) && this.directionTest(input)));
      },

      emit: function(input) {

          this.pX = input.deltaX;
          this.pY = input.deltaY;

          var direction = directionStr(input.direction);

          if (direction) {
              input.additionalEvent = this.options.event + direction;
          }
          this._super.emit.call(this, input);
      }
  });

  /**
   * Pinch
   * Recognized when two or more pointers are moving toward (zoom-in) or away from each other (zoom-out).
   * @constructor
   * @extends AttrRecognizer
   */
  function PinchRecognizer() {
      AttrRecognizer.apply(this, arguments);
  }

  inherit(PinchRecognizer, AttrRecognizer, {
      /**
       * @namespace
       * @memberof PinchRecognizer
       */
      defaults: {
          event: 'pinch',
          threshold: 0,
          pointers: 2
      },

      getTouchAction: function() {
          return [TOUCH_ACTION_NONE];
      },

      attrTest: function(input) {
          return this._super.attrTest.call(this, input) &&
              (Math.abs(input.scale - 1) > this.options.threshold || this.state & STATE_BEGAN);
      },

      emit: function(input) {
          if (input.scale !== 1) {
              var inOut = input.scale < 1 ? 'in' : 'out';
              input.additionalEvent = this.options.event + inOut;
          }
          this._super.emit.call(this, input);
      }
  });

  /**
   * Press
   * Recognized when the pointer is down for x ms without any movement.
   * @constructor
   * @extends Recognizer
   */
  function PressRecognizer() {
      Recognizer.apply(this, arguments);

      this._timer = null;
      this._input = null;
  }

  inherit(PressRecognizer, Recognizer, {
      /**
       * @namespace
       * @memberof PressRecognizer
       */
      defaults: {
          event: 'press',
          pointers: 1,
          time: 251, // minimal time of the pointer to be pressed
          threshold: 9 // a minimal movement is ok, but keep it low
      },

      getTouchAction: function() {
          return [TOUCH_ACTION_AUTO];
      },

      process: function(input) {
          var options = this.options;
          var validPointers = input.pointers.length === options.pointers;
          var validMovement = input.distance < options.threshold;
          var validTime = input.deltaTime > options.time;

          this._input = input;

          // we only allow little movement
          // and we've reached an end event, so a tap is possible
          if (!validMovement || !validPointers || (input.eventType & (INPUT_END | INPUT_CANCEL) && !validTime)) {
              this.reset();
          } else if (input.eventType & INPUT_START) {
              this.reset();
              this._timer = setTimeoutContext(function() {
                  this.state = STATE_RECOGNIZED;
                  this.tryEmit();
              }, options.time, this);
          } else if (input.eventType & INPUT_END) {
              return STATE_RECOGNIZED;
          }
          return STATE_FAILED;
      },

      reset: function() {
          clearTimeout(this._timer);
      },

      emit: function(input) {
          if (this.state !== STATE_RECOGNIZED) {
              return;
          }

          if (input && (input.eventType & INPUT_END)) {
              this.manager.emit(this.options.event + 'up', input);
          } else {
              this._input.timeStamp = now();
              this.manager.emit(this.options.event, this._input);
          }
      }
  });

  /**
   * Rotate
   * Recognized when two or more pointer are moving in a circular motion.
   * @constructor
   * @extends AttrRecognizer
   */
  function RotateRecognizer() {
      AttrRecognizer.apply(this, arguments);
  }

  inherit(RotateRecognizer, AttrRecognizer, {
      /**
       * @namespace
       * @memberof RotateRecognizer
       */
      defaults: {
          event: 'rotate',
          threshold: 0,
          pointers: 2
      },

      getTouchAction: function() {
          return [TOUCH_ACTION_NONE];
      },

      attrTest: function(input) {
          return this._super.attrTest.call(this, input) &&
              (Math.abs(input.rotation) > this.options.threshold || this.state & STATE_BEGAN);
      }
  });

  /**
   * Swipe
   * Recognized when the pointer is moving fast (velocity), with enough distance in the allowed direction.
   * @constructor
   * @extends AttrRecognizer
   */
  function SwipeRecognizer() {
      AttrRecognizer.apply(this, arguments);
  }

  inherit(SwipeRecognizer, AttrRecognizer, {
      /**
       * @namespace
       * @memberof SwipeRecognizer
       */
      defaults: {
          event: 'swipe',
          threshold: 10,
          velocity: 0.3,
          direction: DIRECTION_HORIZONTAL | DIRECTION_VERTICAL,
          pointers: 1
      },

      getTouchAction: function() {
          return PanRecognizer.prototype.getTouchAction.call(this);
      },

      attrTest: function(input) {
          var direction = this.options.direction;
          var velocity;

          if (direction & (DIRECTION_HORIZONTAL | DIRECTION_VERTICAL)) {
              velocity = input.overallVelocity;
          } else if (direction & DIRECTION_HORIZONTAL) {
              velocity = input.overallVelocityX;
          } else if (direction & DIRECTION_VERTICAL) {
              velocity = input.overallVelocityY;
          }

          return this._super.attrTest.call(this, input) &&
              direction & input.offsetDirection &&
              input.distance > this.options.threshold &&
              input.maxPointers == this.options.pointers &&
              abs(velocity) > this.options.velocity && input.eventType & INPUT_END;
      },

      emit: function(input) {
          var direction = directionStr(input.offsetDirection);
          if (direction) {
              this.manager.emit(this.options.event + direction, input);
          }

          this.manager.emit(this.options.event, input);
      }
  });

  /**
   * A tap is ecognized when the pointer is doing a small tap/click. Multiple taps are recognized if they occur
   * between the given interval and position. The delay option can be used to recognize multi-taps without firing
   * a single tap.
   *
   * The eventData from the emitted event contains the property `tapCount`, which contains the amount of
   * multi-taps being recognized.
   * @constructor
   * @extends Recognizer
   */
  function TapRecognizer() {
      Recognizer.apply(this, arguments);

      // previous time and center,
      // used for tap counting
      this.pTime = false;
      this.pCenter = false;

      this._timer = null;
      this._input = null;
      this.count = 0;
  }

  inherit(TapRecognizer, Recognizer, {
      /**
       * @namespace
       * @memberof PinchRecognizer
       */
      defaults: {
          event: 'tap',
          pointers: 1,
          taps: 1,
          interval: 300, // max time between the multi-tap taps
          time: 250, // max time of the pointer to be down (like finger on the screen)
          threshold: 9, // a minimal movement is ok, but keep it low
          posThreshold: 10 // a multi-tap can be a bit off the initial position
      },

      getTouchAction: function() {
          return [TOUCH_ACTION_MANIPULATION];
      },

      process: function(input) {
          var options = this.options;

          var validPointers = input.pointers.length === options.pointers;
          var validMovement = input.distance < options.threshold;
          var validTouchTime = input.deltaTime < options.time;

          this.reset();

          if ((input.eventType & INPUT_START) && (this.count === 0)) {
              return this.failTimeout();
          }

          // we only allow little movement
          // and we've reached an end event, so a tap is possible
          if (validMovement && validTouchTime && validPointers) {
              if (input.eventType != INPUT_END) {
                  return this.failTimeout();
              }

              var validInterval = this.pTime ? (input.timeStamp - this.pTime < options.interval) : true;
              var validMultiTap = !this.pCenter || getDistance(this.pCenter, input.center) < options.posThreshold;

              this.pTime = input.timeStamp;
              this.pCenter = input.center;

              if (!validMultiTap || !validInterval) {
                  this.count = 1;
              } else {
                  this.count += 1;
              }

              this._input = input;

              // if tap count matches we have recognized it,
              // else it has began recognizing...
              var tapCount = this.count % options.taps;
              if (tapCount === 0) {
                  // no failing requirements, immediately trigger the tap event
                  // or wait as long as the multitap interval to trigger
                  if (!this.hasRequireFailures()) {
                      return STATE_RECOGNIZED;
                  } else {
                      this._timer = setTimeoutContext(function() {
                          this.state = STATE_RECOGNIZED;
                          this.tryEmit();
                      }, options.interval, this);
                      return STATE_BEGAN;
                  }
              }
          }
          return STATE_FAILED;
      },

      failTimeout: function() {
          this._timer = setTimeoutContext(function() {
              this.state = STATE_FAILED;
          }, this.options.interval, this);
          return STATE_FAILED;
      },

      reset: function() {
          clearTimeout(this._timer);
      },

      emit: function() {
          if (this.state == STATE_RECOGNIZED) {
              this._input.tapCount = this.count;
              this.manager.emit(this.options.event, this._input);
          }
      }
  });

  /**
   * Simple way to create a manager with a default set of recognizers.
   * @param {HTMLElement} element
   * @param {Object} [options]
   * @constructor
   */
  function Hammer(element, options) {
      options = options || {};
      options.recognizers = ifUndefined(options.recognizers, Hammer.defaults.preset);
      return new Manager(element, options);
  }

  /**
   * @const {string}
   */
  Hammer.VERSION = '2.0.6';

  /**
   * default settings
   * @namespace
   */
  Hammer.defaults = {
      /**
       * set if DOM events are being triggered.
       * But this is slower and unused by simple implementations, so disabled by default.
       * @type {Boolean}
       * @default false
       */
      domEvents: false,

      /**
       * The value for the touchAction property/fallback.
       * When set to `compute` it will magically set the correct value based on the added recognizers.
       * @type {String}
       * @default compute
       */
      touchAction: TOUCH_ACTION_COMPUTE,

      /**
       * @type {Boolean}
       * @default true
       */
      enable: true,

      /**
       * EXPERIMENTAL FEATURE -- can be removed/changed
       * Change the parent input target element.
       * If Null, then it is being set the to main element.
       * @type {Null|EventTarget}
       * @default null
       */
      inputTarget: null,

      /**
       * force an input class
       * @type {Null|Function}
       * @default null
       */
      inputClass: null,

      /**
       * Default recognizer setup when calling `Hammer()`
       * When creating a new Manager these will be skipped.
       * @type {Array}
       */
      preset: [
          // RecognizerClass, options, [recognizeWith, ...], [requireFailure, ...]
          [RotateRecognizer, {enable: false}],
          [PinchRecognizer, {enable: false}, ['rotate']],
          [SwipeRecognizer, {direction: DIRECTION_HORIZONTAL}],
          [PanRecognizer, {direction: DIRECTION_HORIZONTAL}, ['swipe']],
          [TapRecognizer],
          [TapRecognizer, {event: 'doubletap', taps: 2}, ['tap']],
          [PressRecognizer]
      ],

      /**
       * Some CSS properties can be used to improve the working of Hammer.
       * Add them to this method and they will be set when creating a new Manager.
       * @namespace
       */
      cssProps: {
          /**
           * Disables text selection to improve the dragging gesture. Mainly for desktop browsers.
           * @type {String}
           * @default 'none'
           */
          userSelect: 'none',

          /**
           * Disable the Windows Phone grippers when pressing an element.
           * @type {String}
           * @default 'none'
           */
          touchSelect: 'none',

          /**
           * Disables the default callout shown when you touch and hold a touch target.
           * On iOS, when you touch and hold a touch target such as a link, Safari displays
           * a callout containing information about the link. This property allows you to disable that callout.
           * @type {String}
           * @default 'none'
           */
          touchCallout: 'none',

          /**
           * Specifies whether zooming is enabled. Used by IE10>
           * @type {String}
           * @default 'none'
           */
          contentZooming: 'none',

          /**
           * Specifies that an entire element should be draggable instead of its contents. Mainly for desktop browsers.
           * @type {String}
           * @default 'none'
           */
          userDrag: 'none',

          /**
           * Overrides the highlight color shown when the user taps a link or a JavaScript
           * clickable element in iOS. This property obeys the alpha value, if specified.
           * @type {String}
           * @default 'rgba(0,0,0,0)'
           */
          tapHighlightColor: 'rgba(0,0,0,0)'
      }
  };

  var STOP = 1;
  var FORCED_STOP = 2;

  /**
   * Manager
   * @param {HTMLElement} element
   * @param {Object} [options]
   * @constructor
   */
  function Manager(element, options) {
      this.options = assign({}, Hammer.defaults, options || {});

      this.options.inputTarget = this.options.inputTarget || element;

      this.handlers = {};
      this.session = {};
      this.recognizers = [];

      this.element = element;
      this.input = createInputInstance(this);
      this.touchAction = new TouchAction(this, this.options.touchAction);

      toggleCssProps(this, true);

      each(this.options.recognizers, function(item) {
          var recognizer = this.add(new (item[0])(item[1]));
          item[2] && recognizer.recognizeWith(item[2]);
          item[3] && recognizer.requireFailure(item[3]);
      }, this);
  }

  Manager.prototype = {
      /**
       * set options
       * @param {Object} options
       * @returns {Manager}
       */
      set: function(options) {
          assign(this.options, options);

          // Options that need a little more setup
          if (options.touchAction) {
              this.touchAction.update();
          }
          if (options.inputTarget) {
              // Clean up existing event listeners and reinitialize
              this.input.destroy();
              this.input.target = options.inputTarget;
              this.input.init();
          }
          return this;
      },

      /**
       * stop recognizing for this session.
       * This session will be discarded, when a new [input]start event is fired.
       * When forced, the recognizer cycle is stopped immediately.
       * @param {Boolean} [force]
       */
      stop: function(force) {
          this.session.stopped = force ? FORCED_STOP : STOP;
      },

      /**
       * run the recognizers!
       * called by the inputHandler function on every movement of the pointers (touches)
       * it walks through all the recognizers and tries to detect the gesture that is being made
       * @param {Object} inputData
       */
      recognize: function(inputData) {
          var session = this.session;
          if (session.stopped) {
              return;
          }

          // run the touch-action polyfill
          this.touchAction.preventDefaults(inputData);

          var recognizer;
          var recognizers = this.recognizers;

          // this holds the recognizer that is being recognized.
          // so the recognizer's state needs to be BEGAN, CHANGED, ENDED or RECOGNIZED
          // if no recognizer is detecting a thing, it is set to `null`
          var curRecognizer = session.curRecognizer;

          // reset when the last recognizer is recognized
          // or when we're in a new session
          if (!curRecognizer || (curRecognizer && curRecognizer.state & STATE_RECOGNIZED)) {
              curRecognizer = session.curRecognizer = null;
          }

          var i = 0;
          while (i < recognizers.length) {
              recognizer = recognizers[i];

              // find out if we are allowed try to recognize the input for this one.
              // 1.   allow if the session is NOT forced stopped (see the .stop() method)
              // 2.   allow if we still haven't recognized a gesture in this session, or the this recognizer is the one
              //      that is being recognized.
              // 3.   allow if the recognizer is allowed to run simultaneous with the current recognized recognizer.
              //      this can be setup with the `recognizeWith()` method on the recognizer.
              if (session.stopped !== FORCED_STOP && ( // 1
                      !curRecognizer || recognizer == curRecognizer || // 2
                      recognizer.canRecognizeWith(curRecognizer))) { // 3
                  recognizer.recognize(inputData);
              } else {
                  recognizer.reset();
              }

              // if the recognizer has been recognizing the input as a valid gesture, we want to store this one as the
              // current active recognizer. but only if we don't already have an active recognizer
              if (!curRecognizer && recognizer.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED)) {
                  curRecognizer = session.curRecognizer = recognizer;
              }
              i++;
          }
      },

      /**
       * get a recognizer by its event name.
       * @param {Recognizer|String} recognizer
       * @returns {Recognizer|Null}
       */
      get: function(recognizer) {
          if (recognizer instanceof Recognizer) {
              return recognizer;
          }

          var recognizers = this.recognizers;
          for (var i = 0; i < recognizers.length; i++) {
              if (recognizers[i].options.event == recognizer) {
                  return recognizers[i];
              }
          }
          return null;
      },

      /**
       * add a recognizer to the manager
       * existing recognizers with the same event name will be removed
       * @param {Recognizer} recognizer
       * @returns {Recognizer|Manager}
       */
      add: function(recognizer) {
          if (invokeArrayArg(recognizer, 'add', this)) {
              return this;
          }

          // remove existing
          var existing = this.get(recognizer.options.event);
          if (existing) {
              this.remove(existing);
          }

          this.recognizers.push(recognizer);
          recognizer.manager = this;

          this.touchAction.update();
          return recognizer;
      },

      /**
       * remove a recognizer by name or instance
       * @param {Recognizer|String} recognizer
       * @returns {Manager}
       */
      remove: function(recognizer) {
          if (invokeArrayArg(recognizer, 'remove', this)) {
              return this;
          }

          recognizer = this.get(recognizer);

          // let's make sure this recognizer exists
          if (recognizer) {
              var recognizers = this.recognizers;
              var index = inArray(recognizers, recognizer);

              if (index !== -1) {
                  recognizers.splice(index, 1);
                  this.touchAction.update();
              }
          }

          return this;
      },

      /**
       * bind event
       * @param {String} events
       * @param {Function} handler
       * @returns {EventEmitter} this
       */
      on: function(events, handler) {
          var handlers = this.handlers;
          each(splitStr(events), function(event) {
              handlers[event] = handlers[event] || [];
              handlers[event].push(handler);
          });
          return this;
      },

      /**
       * unbind event, leave emit blank to remove all handlers
       * @param {String} events
       * @param {Function} [handler]
       * @returns {EventEmitter} this
       */
      off: function(events, handler) {
          var handlers = this.handlers;
          each(splitStr(events), function(event) {
              if (!handler) {
                  delete handlers[event];
              } else {
                  handlers[event] && handlers[event].splice(inArray(handlers[event], handler), 1);
              }
          });
          return this;
      },

      /**
       * emit event to the listeners
       * @param {String} event
       * @param {Object} data
       */
      emit: function(event, data) {
          // we also want to trigger dom events
          if (this.options.domEvents) {
              triggerDomEvent(event, data);
          }

          // no handlers, so skip it all
          var handlers = this.handlers[event] && this.handlers[event].slice();
          if (!handlers || !handlers.length) {
              return;
          }

          data.type = event;
          data.preventDefault = function() {
              data.srcEvent.preventDefault();
          };

          var i = 0;
          while (i < handlers.length) {
              handlers[i](data);
              i++;
          }
      },

      /**
       * destroy the manager and unbinds all events
       * it doesn't unbind dom events, that is the user own responsibility
       */
      destroy: function() {
          this.element && toggleCssProps(this, false);

          this.handlers = {};
          this.session = {};
          this.input.destroy();
          this.element = null;
      }
  };

  /**
   * add/remove the css properties as defined in manager.options.cssProps
   * @param {Manager} manager
   * @param {Boolean} add
   */
  function toggleCssProps(manager, add) {
      var element = manager.element;
      if (!element.style) {
          return;
      }
      each(manager.options.cssProps, function(value, name) {
          element.style[prefixed(element.style, name)] = add ? value : '';
      });
  }

  /**
   * trigger dom event
   * @param {String} event
   * @param {Object} data
   */
  function triggerDomEvent(event, data) {
      var gestureEvent = document.createEvent('Event');
      gestureEvent.initEvent(event, true, true);
      gestureEvent.gesture = data;
      data.target.dispatchEvent(gestureEvent);
  }

  assign(Hammer, {
      INPUT_START: INPUT_START,
      INPUT_MOVE: INPUT_MOVE,
      INPUT_END: INPUT_END,
      INPUT_CANCEL: INPUT_CANCEL,

      STATE_POSSIBLE: STATE_POSSIBLE,
      STATE_BEGAN: STATE_BEGAN,
      STATE_CHANGED: STATE_CHANGED,
      STATE_ENDED: STATE_ENDED,
      STATE_RECOGNIZED: STATE_RECOGNIZED,
      STATE_CANCELLED: STATE_CANCELLED,
      STATE_FAILED: STATE_FAILED,

      DIRECTION_NONE: DIRECTION_NONE,
      DIRECTION_LEFT: DIRECTION_LEFT,
      DIRECTION_RIGHT: DIRECTION_RIGHT,
      DIRECTION_UP: DIRECTION_UP,
      DIRECTION_DOWN: DIRECTION_DOWN,
      DIRECTION_HORIZONTAL: DIRECTION_HORIZONTAL,
      DIRECTION_VERTICAL: DIRECTION_VERTICAL,
      DIRECTION_ALL: DIRECTION_ALL,

      Manager: Manager,
      Input: Input,
      TouchAction: TouchAction,

      TouchInput: TouchInput,
      MouseInput: MouseInput,
      PointerEventInput: PointerEventInput,
      TouchMouseInput: TouchMouseInput,
      SingleTouchInput: SingleTouchInput,

      Recognizer: Recognizer,
      AttrRecognizer: AttrRecognizer,
      Tap: TapRecognizer,
      Pan: PanRecognizer,
      Swipe: SwipeRecognizer,
      Pinch: PinchRecognizer,
      Rotate: RotateRecognizer,
      Press: PressRecognizer,

      on: addEventListeners,
      off: removeEventListeners,
      each: each,
      merge: merge,
      extend: extend,
      assign: assign,
      inherit: inherit,
      bindFn: bindFn,
      prefixed: prefixed
  });

  // this prevents errors when Hammer is loaded in the presence of an AMD
  //  style loader but by script tag, not by the loader.
  var freeGlobal = (typeof window !== 'undefined' ? window : (typeof self !== 'undefined' ? self : {})); // jshint ignore:line
  freeGlobal.Hammer = Hammer;

  if (true) {
      !(__WEBPACK_AMD_DEFINE_RESULT__ = function() {
          return Hammer;
      }.call(exports, __webpack_require__, exports, module), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  } else if (typeof module != 'undefined' && module.exports) {
      module.exports = Hammer;
  } else {
      window[exportName] = Hammer;
  }

  })(window, document, 'Hammer');


/***/ },
/* 23 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var hammerUtil = __webpack_require__(24);
  var moment = __webpack_require__(2);
  var Component = __webpack_require__(25);
  var DateUtil = __webpack_require__(26);

  /**
   * @constructor Range
   * A Range controls a numeric range with a start and end value.
   * The Range adjusts the range based on mouse events or programmatic changes,
   * and triggers events when the range is changing or has been changed.
   * @param {{dom: Object, domProps: Object, emitter: Emitter}} body
   * @param {Object} [options]    See description at Range.setOptions
   */
  function Range(body, options) {
    var now = moment().hours(0).minutes(0).seconds(0).milliseconds(0);
    this.start = now.clone().add(-3, 'days').valueOf(); // Number
    this.end = now.clone().add(4, 'days').valueOf(); // Number

    this.body = body;
    this.deltaDifference = 0;
    this.scaleOffset = 0;
    this.startToFront = false;
    this.endToFront = true;

    // default options
    this.defaultOptions = {
      start: null,
      end: null,
      moment: moment,
      direction: 'horizontal', // 'horizontal' or 'vertical'
      moveable: true,
      zoomable: true,
      min: null,
      max: null,
      zoomMin: 10, // milliseconds
      zoomMax: 1000 * 60 * 60 * 24 * 365 * 10000 // milliseconds
    };
    this.options = util.extend({}, this.defaultOptions);

    this.props = {
      touch: {}
    };
    this.animationTimer = null;

    // drag listeners for dragging
    this.body.emitter.on('panstart', this._onDragStart.bind(this));
    this.body.emitter.on('panmove', this._onDrag.bind(this));
    this.body.emitter.on('panend', this._onDragEnd.bind(this));

    // mouse wheel for zooming
    this.body.emitter.on('mousewheel', this._onMouseWheel.bind(this));

    // pinch to zoom
    this.body.emitter.on('touch', this._onTouch.bind(this));
    this.body.emitter.on('pinch', this._onPinch.bind(this));

    this.setOptions(options);
  }

  Range.prototype = new Component();

  /**
   * Set options for the range controller
   * @param {Object} options      Available options:
   *                              {Number | Date | String} start  Start date for the range
   *                              {Number | Date | String} end    End date for the range
   *                              {Number} min    Minimum value for start
   *                              {Number} max    Maximum value for end
   *                              {Number} zoomMin    Set a minimum value for
   *                                                  (end - start).
   *                              {Number} zoomMax    Set a maximum value for
   *                                                  (end - start).
   *                              {Boolean} moveable Enable moving of the range
   *                                                 by dragging. True by default
   *                              {Boolean} zoomable Enable zooming of the range
   *                                                 by pinching/scrolling. True by default
   */
  Range.prototype.setOptions = function (options) {
    if (options) {
      // copy the options that we know
      var fields = ['direction', 'min', 'max', 'zoomMin', 'zoomMax', 'moveable', 'zoomable', 'moment', 'activate', 'hiddenDates', 'zoomKey'];
      util.selectiveExtend(fields, this.options, options);

      if ('start' in options || 'end' in options) {
        // apply a new range. both start and end are optional
        this.setRange(options.start, options.end);
      }
    }
  };

  /**
   * Test whether direction has a valid value
   * @param {String} direction    'horizontal' or 'vertical'
   */
  function validateDirection(direction) {
    if (direction != 'horizontal' && direction != 'vertical') {
      throw new TypeError('Unknown direction "' + direction + '". ' + 'Choose "horizontal" or "vertical".');
    }
  }

  /**
   * Set a new start and end range
   * @param {Date | Number | String} [start]
   * @param {Date | Number | String} [end]
   * @param {boolean | {duration: number, easingFunction: string}} [animation=false]
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   * @param {Boolean} [byUser=false]
   *
   */
  Range.prototype.setRange = function (start, end, animation, byUser) {
    if (byUser !== true) {
      byUser = false;
    }
    var finalStart = start != undefined ? util.convert(start, 'Date').valueOf() : null;
    var finalEnd = end != undefined ? util.convert(end, 'Date').valueOf() : null;
    this._cancelAnimation();

    if (animation) {
      // true or an Object
      var me = this;
      var initStart = this.start;
      var initEnd = this.end;
      var duration = typeof animation === 'object' && 'duration' in animation ? animation.duration : 500;
      var easingName = typeof animation === 'object' && 'easingFunction' in animation ? animation.easingFunction : 'easeInOutQuad';
      var easingFunction = util.easingFunctions[easingName];
      if (!easingFunction) {
        throw new Error('Unknown easing function ' + JSON.stringify(easingName) + '. ' + 'Choose from: ' + Object.keys(util.easingFunctions).join(', '));
      }

      var initTime = new Date().valueOf();
      var anyChanged = false;

      var next = function next() {
        if (!me.props.touch.dragging) {
          var now = new Date().valueOf();
          var time = now - initTime;
          var ease = easingFunction(time / duration);
          var done = time > duration;
          var s = done || finalStart === null ? finalStart : initStart + (finalStart - initStart) * ease;
          var e = done || finalEnd === null ? finalEnd : initEnd + (finalEnd - initEnd) * ease;

          changed = me._applyRange(s, e);
          DateUtil.updateHiddenDates(me.options.moment, me.body, me.options.hiddenDates);
          anyChanged = anyChanged || changed;
          if (changed) {
            me.body.emitter.emit('rangechange', { start: new Date(me.start), end: new Date(me.end), byUser: byUser });
          }

          if (done) {
            if (anyChanged) {
              me.body.emitter.emit('rangechanged', { start: new Date(me.start), end: new Date(me.end), byUser: byUser });
            }
          } else {
            // animate with as high as possible frame rate, leave 20 ms in between
            // each to prevent the browser from blocking
            me.animationTimer = setTimeout(next, 20);
          }
        }
      };

      return next();
    } else {
      var changed = this._applyRange(finalStart, finalEnd);
      DateUtil.updateHiddenDates(this.options.moment, this.body, this.options.hiddenDates);
      if (changed) {
        var params = { start: new Date(this.start), end: new Date(this.end), byUser: byUser };
        this.body.emitter.emit('rangechange', params);
        this.body.emitter.emit('rangechanged', params);
      }
    }
  };

  /**
   * Stop an animation
   * @private
   */
  Range.prototype._cancelAnimation = function () {
    if (this.animationTimer) {
      clearTimeout(this.animationTimer);
      this.animationTimer = null;
    }
  };

  /**
   * Set a new start and end range. This method is the same as setRange, but
   * does not trigger a range change and range changed event, and it returns
   * true when the range is changed
   * @param {Number} [start]
   * @param {Number} [end]
   * @return {Boolean} changed
   * @private
   */
  Range.prototype._applyRange = function (start, end) {
    var newStart = start != null ? util.convert(start, 'Date').valueOf() : this.start,
        newEnd = end != null ? util.convert(end, 'Date').valueOf() : this.end,
        max = this.options.max != null ? util.convert(this.options.max, 'Date').valueOf() : null,
        min = this.options.min != null ? util.convert(this.options.min, 'Date').valueOf() : null,
        diff;

    // check for valid number
    if (isNaN(newStart) || newStart === null) {
      throw new Error('Invalid start "' + start + '"');
    }
    if (isNaN(newEnd) || newEnd === null) {
      throw new Error('Invalid end "' + end + '"');
    }

    // prevent start < end
    if (newEnd < newStart) {
      newEnd = newStart;
    }

    // prevent start < min
    if (min !== null) {
      if (newStart < min) {
        diff = min - newStart;
        newStart += diff;
        newEnd += diff;

        // prevent end > max
        if (max != null) {
          if (newEnd > max) {
            newEnd = max;
          }
        }
      }
    }

    // prevent end > max
    if (max !== null) {
      if (newEnd > max) {
        diff = newEnd - max;
        newStart -= diff;
        newEnd -= diff;

        // prevent start < min
        if (min != null) {
          if (newStart < min) {
            newStart = min;
          }
        }
      }
    }

    // prevent (end-start) < zoomMin
    if (this.options.zoomMin !== null) {
      var zoomMin = parseFloat(this.options.zoomMin);
      if (zoomMin < 0) {
        zoomMin = 0;
      }
      if (newEnd - newStart < zoomMin) {
        if (this.end - this.start === zoomMin && newStart > this.start && newEnd < this.end) {
          // ignore this action, we are already zoomed to the minimum
          newStart = this.start;
          newEnd = this.end;
        } else {
          // zoom to the minimum
          diff = zoomMin - (newEnd - newStart);
          newStart -= diff / 2;
          newEnd += diff / 2;
        }
      }
    }

    // prevent (end-start) > zoomMax
    if (this.options.zoomMax !== null) {
      var zoomMax = parseFloat(this.options.zoomMax);
      if (zoomMax < 0) {
        zoomMax = 0;
      }

      if (newEnd - newStart > zoomMax) {
        if (this.end - this.start === zoomMax && newStart < this.start && newEnd > this.end) {
          // ignore this action, we are already zoomed to the maximum
          newStart = this.start;
          newEnd = this.end;
        } else {
          // zoom to the maximum
          diff = newEnd - newStart - zoomMax;
          newStart += diff / 2;
          newEnd -= diff / 2;
        }
      }
    }

    var changed = this.start != newStart || this.end != newEnd;

    // if the new range does NOT overlap with the old range, emit checkRangedItems to avoid not showing ranged items (ranged meaning has end time, not necessarily of type Range)
    if (!(newStart >= this.start && newStart <= this.end || newEnd >= this.start && newEnd <= this.end) && !(this.start >= newStart && this.start <= newEnd || this.end >= newStart && this.end <= newEnd)) {
      this.body.emitter.emit('checkRangedItems');
    }

    this.start = newStart;
    this.end = newEnd;
    return changed;
  };

  /**
   * Retrieve the current range.
   * @return {Object} An object with start and end properties
   */
  Range.prototype.getRange = function () {
    return {
      start: this.start,
      end: this.end
    };
  };

  /**
   * Calculate the conversion offset and scale for current range, based on
   * the provided width
   * @param {Number} width
   * @returns {{offset: number, scale: number}} conversion
   */
  Range.prototype.conversion = function (width, totalHidden) {
    return Range.conversion(this.start, this.end, width, totalHidden);
  };

  /**
   * Static method to calculate the conversion offset and scale for a range,
   * based on the provided start, end, and width
   * @param {Number} start
   * @param {Number} end
   * @param {Number} width
   * @returns {{offset: number, scale: number}} conversion
   */
  Range.conversion = function (start, end, width, totalHidden) {
    if (totalHidden === undefined) {
      totalHidden = 0;
    }
    if (width != 0 && end - start != 0) {
      return {
        offset: start,
        scale: width / (end - start - totalHidden)
      };
    } else {
      return {
        offset: 0,
        scale: 1
      };
    }
  };

  /**
   * Start dragging horizontally or vertically
   * @param {Event} event
   * @private
   */
  Range.prototype._onDragStart = function (event) {
    this.deltaDifference = 0;
    this.previousDelta = 0;

    // only allow dragging when configured as movable
    if (!this.options.moveable) return;

    // only start dragging when the mouse is inside the current range
    if (!this._isInsideRange(event)) return;

    // refuse to drag when we where pinching to prevent the timeline make a jump
    // when releasing the fingers in opposite order from the touch screen
    if (!this.props.touch.allowDragging) return;

    this.props.touch.start = this.start;
    this.props.touch.end = this.end;
    this.props.touch.dragging = true;

    if (this.body.dom.root) {
      this.body.dom.root.style.cursor = 'move';
    }
  };

  /**
   * Perform dragging operation
   * @param {Event} event
   * @private
   */
  Range.prototype._onDrag = function (event) {
    if (!this.props.touch.dragging) return;

    // only allow dragging when configured as movable
    if (!this.options.moveable) return;

    // TODO: this may be redundant in hammerjs2
    // refuse to drag when we where pinching to prevent the timeline make a jump
    // when releasing the fingers in opposite order from the touch screen
    if (!this.props.touch.allowDragging) return;

    var direction = this.options.direction;
    validateDirection(direction);
    var delta = direction == 'horizontal' ? event.deltaX : event.deltaY;
    delta -= this.deltaDifference;
    var interval = this.props.touch.end - this.props.touch.start;

    // normalize dragging speed if cutout is in between.
    var duration = DateUtil.getHiddenDurationBetween(this.body.hiddenDates, this.start, this.end);
    interval -= duration;

    var width = direction == 'horizontal' ? this.body.domProps.center.width : this.body.domProps.center.height;
    var diffRange = -delta / width * interval;
    var newStart = this.props.touch.start + diffRange;
    var newEnd = this.props.touch.end + diffRange;

    // snapping times away from hidden zones
    var safeStart = DateUtil.snapAwayFromHidden(this.body.hiddenDates, newStart, this.previousDelta - delta, true);
    var safeEnd = DateUtil.snapAwayFromHidden(this.body.hiddenDates, newEnd, this.previousDelta - delta, true);
    if (safeStart != newStart || safeEnd != newEnd) {
      this.deltaDifference += delta;
      this.props.touch.start = safeStart;
      this.props.touch.end = safeEnd;
      this._onDrag(event);
      return;
    }

    this.previousDelta = delta;
    this._applyRange(newStart, newEnd);

    var startDate = new Date(this.start);
    var endDate = new Date(this.end);

    // fire a rangechange event
    this.body.emitter.emit('rangechange', {
      start: startDate,
      end: endDate,
      byUser: true
    });
  };

  /**
   * Stop dragging operation
   * @param {event} event
   * @private
   */
  Range.prototype._onDragEnd = function (event) {
    if (!this.props.touch.dragging) return;

    // only allow dragging when configured as movable
    if (!this.options.moveable) return;

    // TODO: this may be redundant in hammerjs2
    // refuse to drag when we where pinching to prevent the timeline make a jump
    // when releasing the fingers in opposite order from the touch screen
    if (!this.props.touch.allowDragging) return;

    this.props.touch.dragging = false;
    if (this.body.dom.root) {
      this.body.dom.root.style.cursor = 'auto';
    }

    // fire a rangechanged event
    this.body.emitter.emit('rangechanged', {
      start: new Date(this.start),
      end: new Date(this.end),
      byUser: true
    });
  };

  /**
   * Event handler for mouse wheel event, used to zoom
   * Code from http://adomas.org/javascript-mouse-wheel/
   * @param {Event} event
   * @private
   */
  Range.prototype._onMouseWheel = function (event) {
    // only allow zooming when configured as zoomable and moveable
    if (!(this.options.zoomable && this.options.moveable)) return;

    // only zoom when the mouse is inside the current range
    if (!this._isInsideRange(event)) return;

    // only zoom when the according key is pressed and the zoomKey option is set
    if (this.options.zoomKey && !event[this.options.zoomKey]) return;

    // retrieve delta
    var delta = 0;
    if (event.wheelDelta) {
      /* IE/Opera. */
      delta = event.wheelDelta / 120;
    } else if (event.detail) {
      /* Mozilla case. */
      // In Mozilla, sign of delta is different than in IE.
      // Also, delta is multiple of 3.
      delta = -event.detail / 3;
    }

    // If delta is nonzero, handle it.
    // Basically, delta is now positive if wheel was scrolled up,
    // and negative, if wheel was scrolled down.
    if (delta) {
      // perform the zoom action. Delta is normally 1 or -1

      // adjust a negative delta such that zooming in with delta 0.1
      // equals zooming out with a delta -0.1
      var scale;
      if (delta < 0) {
        scale = 1 - delta / 5;
      } else {
        scale = 1 / (1 + delta / 5);
      }

      // calculate center, the date to zoom around
      var pointer = getPointer({ x: event.clientX, y: event.clientY }, this.body.dom.center);
      var pointerDate = this._pointerToDate(pointer);

      this.zoom(scale, pointerDate, delta);
    }

    // Prevent default actions caused by mouse wheel
    // (else the page and timeline both zoom and scroll)
    event.preventDefault();
  };

  /**
   * Start of a touch gesture
   * @private
   */
  Range.prototype._onTouch = function (event) {
    this.props.touch.start = this.start;
    this.props.touch.end = this.end;
    this.props.touch.allowDragging = true;
    this.props.touch.center = null;
    this.scaleOffset = 0;
    this.deltaDifference = 0;
  };

  /**
   * Handle pinch event
   * @param {Event} event
   * @private
   */
  Range.prototype._onPinch = function (event) {
    // only allow zooming when configured as zoomable and moveable
    if (!(this.options.zoomable && this.options.moveable)) return;

    this.props.touch.allowDragging = false;

    if (!this.props.touch.center) {
      this.props.touch.center = getPointer(event.center, this.body.dom.center);
    }

    var scale = 1 / (event.scale + this.scaleOffset);
    var centerDate = this._pointerToDate(this.props.touch.center);

    var hiddenDuration = DateUtil.getHiddenDurationBetween(this.body.hiddenDates, this.start, this.end);
    var hiddenDurationBefore = DateUtil.getHiddenDurationBefore(this.options.moment, this.body.hiddenDates, this, centerDate);
    var hiddenDurationAfter = hiddenDuration - hiddenDurationBefore;

    // calculate new start and end
    var newStart = centerDate - hiddenDurationBefore + (this.props.touch.start - (centerDate - hiddenDurationBefore)) * scale;
    var newEnd = centerDate + hiddenDurationAfter + (this.props.touch.end - (centerDate + hiddenDurationAfter)) * scale;

    // snapping times away from hidden zones
    this.startToFront = 1 - scale <= 0; // used to do the right auto correction with periodic hidden times
    this.endToFront = scale - 1 <= 0; // used to do the right auto correction with periodic hidden times

    var safeStart = DateUtil.snapAwayFromHidden(this.body.hiddenDates, newStart, 1 - scale, true);
    var safeEnd = DateUtil.snapAwayFromHidden(this.body.hiddenDates, newEnd, scale - 1, true);
    if (safeStart != newStart || safeEnd != newEnd) {
      this.props.touch.start = safeStart;
      this.props.touch.end = safeEnd;
      this.scaleOffset = 1 - event.scale;
      newStart = safeStart;
      newEnd = safeEnd;
    }

    this.setRange(newStart, newEnd, false, true);

    this.startToFront = false; // revert to default
    this.endToFront = true; // revert to default
  };

  /**
   * Test whether the mouse from a mouse event is inside the visible window,
   * between the current start and end date
   * @param {Object} event
   * @return {boolean} Returns true when inside the visible window
   * @private
   */
  Range.prototype._isInsideRange = function (event) {
    // calculate the time where the mouse is, check whether inside
    // and no scroll action should happen.
    var clientX = event.center ? event.center.x : event.clientX;
    var x = clientX - util.getAbsoluteLeft(this.body.dom.centerContainer);
    var time = this.body.util.toTime(x);

    return time >= this.start && time <= this.end;
  };

  /**
   * Helper function to calculate the center date for zooming
   * @param {{x: Number, y: Number}} pointer
   * @return {number} date
   * @private
   */
  Range.prototype._pointerToDate = function (pointer) {
    var conversion;
    var direction = this.options.direction;

    validateDirection(direction);

    if (direction == 'horizontal') {
      return this.body.util.toTime(pointer.x).valueOf();
    } else {
      var height = this.body.domProps.center.height;
      conversion = this.conversion(height);
      return pointer.y / conversion.scale + conversion.offset;
    }
  };

  /**
   * Get the pointer location relative to the location of the dom element
   * @param {{x: Number, y: Number}} touch
   * @param {Element} element   HTML DOM element
   * @return {{x: Number, y: Number}} pointer
   * @private
   */
  function getPointer(touch, element) {
    return {
      x: touch.x - util.getAbsoluteLeft(element),
      y: touch.y - util.getAbsoluteTop(element)
    };
  }

  /**
   * Zoom the range the given scale in or out. Start and end date will
   * be adjusted, and the timeline will be redrawn. You can optionally give a
   * date around which to zoom.
   * For example, try scale = 0.9 or 1.1
   * @param {Number} scale      Scaling factor. Values above 1 will zoom out,
   *                            values below 1 will zoom in.
   * @param {Number} [center]   Value representing a date around which will
   *                            be zoomed.
   */
  Range.prototype.zoom = function (scale, center, delta) {
    // if centerDate is not provided, take it half between start Date and end Date
    if (center == null) {
      center = (this.start + this.end) / 2;
    }

    var hiddenDuration = DateUtil.getHiddenDurationBetween(this.body.hiddenDates, this.start, this.end);
    var hiddenDurationBefore = DateUtil.getHiddenDurationBefore(this.options.moment, this.body.hiddenDates, this, center);
    var hiddenDurationAfter = hiddenDuration - hiddenDurationBefore;

    // calculate new start and end
    var newStart = center - hiddenDurationBefore + (this.start - (center - hiddenDurationBefore)) * scale;
    var newEnd = center + hiddenDurationAfter + (this.end - (center + hiddenDurationAfter)) * scale;

    // snapping times away from hidden zones
    this.startToFront = delta > 0 ? false : true; // used to do the right autocorrection with periodic hidden times
    this.endToFront = -delta > 0 ? false : true; // used to do the right autocorrection with periodic hidden times
    var safeStart = DateUtil.snapAwayFromHidden(this.body.hiddenDates, newStart, delta, true);
    var safeEnd = DateUtil.snapAwayFromHidden(this.body.hiddenDates, newEnd, -delta, true);
    if (safeStart != newStart || safeEnd != newEnd) {
      newStart = safeStart;
      newEnd = safeEnd;
    }

    this.setRange(newStart, newEnd, false, true);

    this.startToFront = false; // revert to default
    this.endToFront = true; // revert to default
  };

  /**
   * Move the range with a given delta to the left or right. Start and end
   * value will be adjusted. For example, try delta = 0.1 or -0.1
   * @param {Number}  delta     Moving amount. Positive value will move right,
   *                            negative value will move left
   */
  Range.prototype.move = function (delta) {
    // zoom start Date and end Date relative to the centerDate
    var diff = this.end - this.start;

    // apply new values
    var newStart = this.start + diff * delta;
    var newEnd = this.end + diff * delta;

    // TODO: reckon with min and max range

    this.start = newStart;
    this.end = newEnd;
  };

  /**
   * Move the range to a new center point
   * @param {Number} moveTo      New center point of the range
   */
  Range.prototype.moveTo = function (moveTo) {
    var center = (this.start + this.end) / 2;

    var diff = center - moveTo;

    // calculate new start and end
    var newStart = this.start - diff;
    var newEnd = this.end - diff;

    this.setRange(newStart, newEnd);
  };

  module.exports = Range;

/***/ },
/* 24 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Hammer = __webpack_require__(20);

  /**
   * Register a touch event, taking place before a gesture
   * @param {Hammer} hammer       A hammer instance
   * @param {function} callback   Callback, called as callback(event)
   */
  exports.onTouch = function (hammer, callback) {
    callback.inputHandler = function (event) {
      if (event.isFirst) {
        callback(event);
      }
    };

    hammer.on('hammer.input', callback.inputHandler);
  };

  /**
   * Register a release event, taking place after a gesture
   * @param {Hammer} hammer       A hammer instance
   * @param {function} callback   Callback, called as callback(event)
   */
  exports.onRelease = function (hammer, callback) {
    callback.inputHandler = function (event) {
      if (event.isFinal) {
        callback(event);
      }
    };

    return hammer.on('hammer.input', callback.inputHandler);
  };

  /**
   * Unregister a touch event, taking place before a gesture
   * @param {Hammer} hammer       A hammer instance
   * @param {function} callback   Callback, called as callback(event)
   */
  exports.offTouch = function (hammer, callback) {
    hammer.off('hammer.input', callback.inputHandler);
  };

  /**
   * Unregister a release event, taking place before a gesture
   * @param {Hammer} hammer       A hammer instance
   * @param {function} callback   Callback, called as callback(event)
   */
  exports.offRelease = exports.offTouch;

/***/ },
/* 25 */
/***/ function(module, exports) {

  /**
   * Prototype for visual components
   * @param {{dom: Object, domProps: Object, emitter: Emitter, range: Range}} [body]
   * @param {Object} [options]
   */
  "use strict";

  function Component(body, options) {
    this.options = null;
    this.props = null;
  }

  /**
   * Set options for the component. The new options will be merged into the
   * current options.
   * @param {Object} options
   */
  Component.prototype.setOptions = function (options) {
    if (options) {
      util.extend(this.options, options);
    }
  };

  /**
   * Repaint the component
   * @return {boolean} Returns true if the component is resized
   */
  Component.prototype.redraw = function () {
    // should be implemented by the component
    return false;
  };

  /**
   * Destroy the component. Cleanup DOM and event listeners
   */
  Component.prototype.destroy = function () {
    // should be implemented by the component
  };

  /**
   * Test whether the component is resized since the last time _isResized() was
   * called.
   * @return {Boolean} Returns true if the component is resized
   * @protected
   */
  Component.prototype._isResized = function () {
    var resized = this.props._previousWidth !== this.props.width || this.props._previousHeight !== this.props.height;

    this.props._previousWidth = this.props.width;
    this.props._previousHeight = this.props.height;

    return resized;
  };

  module.exports = Component;

/***/ },
/* 26 */
/***/ function(module, exports) {

  
  /**
   * used in Core to convert the options into a volatile variable
   * 
   * @param {function} moment
   * @param {Object} body
   * @param {Array | Object} hiddenDates
   */
  "use strict";

  exports.convertHiddenOptions = function (moment, body, hiddenDates) {
    if (hiddenDates && !Array.isArray(hiddenDates)) {
      return exports.convertHiddenOptions(moment, body, [hiddenDates]);
    }

    body.hiddenDates = [];
    if (hiddenDates) {
      if (Array.isArray(hiddenDates) == true) {
        for (var i = 0; i < hiddenDates.length; i++) {
          if (hiddenDates[i].repeat === undefined) {
            var dateItem = {};
            dateItem.start = moment(hiddenDates[i].start).toDate().valueOf();
            dateItem.end = moment(hiddenDates[i].end).toDate().valueOf();
            body.hiddenDates.push(dateItem);
          }
        }
        body.hiddenDates.sort(function (a, b) {
          return a.start - b.start;
        }); // sort by start time
      }
    }
  };

  /**
   * create new entrees for the repeating hidden dates
   * @param {function} moment
   * @param {Object} body
   * @param {Array | Object} hiddenDates
   */
  exports.updateHiddenDates = function (moment, body, hiddenDates) {
    if (hiddenDates && !Array.isArray(hiddenDates)) {
      return exports.updateHiddenDates(moment, body, [hiddenDates]);
    }

    if (hiddenDates && body.domProps.centerContainer.width !== undefined) {
      exports.convertHiddenOptions(moment, body, hiddenDates);

      var start = moment(body.range.start);
      var end = moment(body.range.end);

      var totalRange = body.range.end - body.range.start;
      var pixelTime = totalRange / body.domProps.centerContainer.width;

      for (var i = 0; i < hiddenDates.length; i++) {
        if (hiddenDates[i].repeat !== undefined) {
          var startDate = moment(hiddenDates[i].start);
          var endDate = moment(hiddenDates[i].end);

          if (startDate._d == "Invalid Date") {
            throw new Error("Supplied start date is not valid: " + hiddenDates[i].start);
          }
          if (endDate._d == "Invalid Date") {
            throw new Error("Supplied end date is not valid: " + hiddenDates[i].end);
          }

          var duration = endDate - startDate;
          if (duration >= 4 * pixelTime) {

            var offset = 0;
            var runUntil = end.clone();
            switch (hiddenDates[i].repeat) {
              case "daily":
                // case of time
                if (startDate.day() != endDate.day()) {
                  offset = 1;
                }
                startDate.dayOfYear(start.dayOfYear());
                startDate.year(start.year());
                startDate.subtract(7, 'days');

                endDate.dayOfYear(start.dayOfYear());
                endDate.year(start.year());
                endDate.subtract(7 - offset, 'days');

                runUntil.add(1, 'weeks');
                break;
              case "weekly":
                var dayOffset = endDate.diff(startDate, 'days');
                var day = startDate.day();

                // set the start date to the range.start
                startDate.date(start.date());
                startDate.month(start.month());
                startDate.year(start.year());
                endDate = startDate.clone();

                // force
                startDate.day(day);
                endDate.day(day);
                endDate.add(dayOffset, 'days');

                startDate.subtract(1, 'weeks');
                endDate.subtract(1, 'weeks');

                runUntil.add(1, 'weeks');
                break;
              case "monthly":
                if (startDate.month() != endDate.month()) {
                  offset = 1;
                }
                startDate.month(start.month());
                startDate.year(start.year());
                startDate.subtract(1, 'months');

                endDate.month(start.month());
                endDate.year(start.year());
                endDate.subtract(1, 'months');
                endDate.add(offset, 'months');

                runUntil.add(1, 'months');
                break;
              case "yearly":
                if (startDate.year() != endDate.year()) {
                  offset = 1;
                }
                startDate.year(start.year());
                startDate.subtract(1, 'years');
                endDate.year(start.year());
                endDate.subtract(1, 'years');
                endDate.add(offset, 'years');

                runUntil.add(1, 'years');
                break;
              default:
                console.log("Wrong repeat format, allowed are: daily, weekly, monthly, yearly. Given:", hiddenDates[i].repeat);
                return;
            }
            while (startDate < runUntil) {
              body.hiddenDates.push({ start: startDate.valueOf(), end: endDate.valueOf() });
              switch (hiddenDates[i].repeat) {
                case "daily":
                  startDate.add(1, 'days');
                  endDate.add(1, 'days');
                  break;
                case "weekly":
                  startDate.add(1, 'weeks');
                  endDate.add(1, 'weeks');
                  break;
                case "monthly":
                  startDate.add(1, 'months');
                  endDate.add(1, 'months');
                  break;
                case "yearly":
                  startDate.add(1, 'y');
                  endDate.add(1, 'y');
                  break;
                default:
                  console.log("Wrong repeat format, allowed are: daily, weekly, monthly, yearly. Given:", hiddenDates[i].repeat);
                  return;
              }
            }
            body.hiddenDates.push({ start: startDate.valueOf(), end: endDate.valueOf() });
          }
        }
      }
      // remove duplicates, merge where possible
      exports.removeDuplicates(body);
      // ensure the new positions are not on hidden dates
      var startHidden = exports.isHidden(body.range.start, body.hiddenDates);
      var endHidden = exports.isHidden(body.range.end, body.hiddenDates);
      var rangeStart = body.range.start;
      var rangeEnd = body.range.end;
      if (startHidden.hidden == true) {
        rangeStart = body.range.startToFront == true ? startHidden.startDate - 1 : startHidden.endDate + 1;
      }
      if (endHidden.hidden == true) {
        rangeEnd = body.range.endToFront == true ? endHidden.startDate - 1 : endHidden.endDate + 1;
      }
      if (startHidden.hidden == true || endHidden.hidden == true) {
        body.range._applyRange(rangeStart, rangeEnd);
      }
    }
  };

  /**
   * remove duplicates from the hidden dates list. Duplicates are evil. They mess everything up.
   * Scales with N^2
   * @param body
   */
  exports.removeDuplicates = function (body) {
    var hiddenDates = body.hiddenDates;
    var safeDates = [];
    for (var i = 0; i < hiddenDates.length; i++) {
      for (var j = 0; j < hiddenDates.length; j++) {
        if (i != j && hiddenDates[j].remove != true && hiddenDates[i].remove != true) {
          // j inside i
          if (hiddenDates[j].start >= hiddenDates[i].start && hiddenDates[j].end <= hiddenDates[i].end) {
            hiddenDates[j].remove = true;
          }
          // j start inside i
          else if (hiddenDates[j].start >= hiddenDates[i].start && hiddenDates[j].start <= hiddenDates[i].end) {
              hiddenDates[i].end = hiddenDates[j].end;
              hiddenDates[j].remove = true;
            }
            // j end inside i
            else if (hiddenDates[j].end >= hiddenDates[i].start && hiddenDates[j].end <= hiddenDates[i].end) {
                hiddenDates[i].start = hiddenDates[j].start;
                hiddenDates[j].remove = true;
              }
        }
      }
    }

    for (var i = 0; i < hiddenDates.length; i++) {
      if (hiddenDates[i].remove !== true) {
        safeDates.push(hiddenDates[i]);
      }
    }

    body.hiddenDates = safeDates;
    body.hiddenDates.sort(function (a, b) {
      return a.start - b.start;
    }); // sort by start time
  };

  exports.printDates = function (dates) {
    for (var i = 0; i < dates.length; i++) {
      console.log(i, new Date(dates[i].start), new Date(dates[i].end), dates[i].start, dates[i].end, dates[i].remove);
    }
  };

  /**
   * Used in TimeStep to avoid the hidden times.
   * @param {function} moment
   * @param {TimeStep} timeStep
   * @param previousTime
   */
  exports.stepOverHiddenDates = function (moment, timeStep, previousTime) {
    var stepInHidden = false;
    var currentValue = timeStep.current.valueOf();
    for (var i = 0; i < timeStep.hiddenDates.length; i++) {
      var startDate = timeStep.hiddenDates[i].start;
      var endDate = timeStep.hiddenDates[i].end;
      if (currentValue >= startDate && currentValue < endDate) {
        stepInHidden = true;
        break;
      }
    }

    if (stepInHidden == true && currentValue < timeStep._end.valueOf() && currentValue != previousTime) {
      var prevValue = moment(previousTime);
      var newValue = moment(endDate);
      //check if the next step should be major
      if (prevValue.year() != newValue.year()) {
        timeStep.switchedYear = true;
      } else if (prevValue.month() != newValue.month()) {
        timeStep.switchedMonth = true;
      } else if (prevValue.dayOfYear() != newValue.dayOfYear()) {
        timeStep.switchedDay = true;
      }

      timeStep.current = newValue;
    }
  };

  ///**
  // * Used in TimeStep to avoid the hidden times.
  // * @param timeStep
  // * @param previousTime
  // */
  //exports.checkFirstStep = function(timeStep) {
  //  var stepInHidden = false;
  //  var currentValue = timeStep.current.valueOf();
  //  for (var i = 0; i < timeStep.hiddenDates.length; i++) {
  //    var startDate = timeStep.hiddenDates[i].start;
  //    var endDate = timeStep.hiddenDates[i].end;
  //    if (currentValue >= startDate && currentValue < endDate) {
  //      stepInHidden = true;
  //      break;
  //    }
  //  }
  //
  //  if (stepInHidden == true && currentValue <= timeStep._end.valueOf()) {
  //    var newValue = moment(endDate);
  //    timeStep.current = newValue.toDate();
  //  }
  //};

  /**
   * replaces the Core toScreen methods
   * @param Core
   * @param time
   * @param width
   * @returns {number}
   */
  exports.toScreen = function (Core, time, width) {
    if (Core.body.hiddenDates.length == 0) {
      var conversion = Core.range.conversion(width);
      return (time.valueOf() - conversion.offset) * conversion.scale;
    } else {
      var hidden = exports.isHidden(time, Core.body.hiddenDates);
      if (hidden.hidden == true) {
        time = hidden.startDate;
      }

      var duration = exports.getHiddenDurationBetween(Core.body.hiddenDates, Core.range.start, Core.range.end);
      time = exports.correctTimeForHidden(Core.options.moment, Core.body.hiddenDates, Core.range, time);

      var conversion = Core.range.conversion(width, duration);
      return (time.valueOf() - conversion.offset) * conversion.scale;
    }
  };

  /**
   * Replaces the core toTime methods
   * @param body
   * @param range
   * @param x
   * @param width
   * @returns {Date}
   */
  exports.toTime = function (Core, x, width) {
    if (Core.body.hiddenDates.length == 0) {
      var conversion = Core.range.conversion(width);
      return new Date(x / conversion.scale + conversion.offset);
    } else {
      var hiddenDuration = exports.getHiddenDurationBetween(Core.body.hiddenDates, Core.range.start, Core.range.end);
      var totalDuration = Core.range.end - Core.range.start - hiddenDuration;
      var partialDuration = totalDuration * x / width;
      var accumulatedHiddenDuration = exports.getAccumulatedHiddenDuration(Core.body.hiddenDates, Core.range, partialDuration);

      var newTime = new Date(accumulatedHiddenDuration + partialDuration + Core.range.start);
      return newTime;
    }
  };

  /**
   * Support function
   *
   * @param hiddenDates
   * @param range
   * @returns {number}
   */
  exports.getHiddenDurationBetween = function (hiddenDates, start, end) {
    var duration = 0;
    for (var i = 0; i < hiddenDates.length; i++) {
      var startDate = hiddenDates[i].start;
      var endDate = hiddenDates[i].end;
      // if time after the cutout, and the
      if (startDate >= start && endDate < end) {
        duration += endDate - startDate;
      }
    }
    return duration;
  };

  /**
   * Support function
   * @param moment
   * @param hiddenDates
   * @param range
   * @param time
   * @returns {{duration: number, time: *, offset: number}}
   */
  exports.correctTimeForHidden = function (moment, hiddenDates, range, time) {
    time = moment(time).toDate().valueOf();
    time -= exports.getHiddenDurationBefore(moment, hiddenDates, range, time);
    return time;
  };

  exports.getHiddenDurationBefore = function (moment, hiddenDates, range, time) {
    var timeOffset = 0;
    time = moment(time).toDate().valueOf();

    for (var i = 0; i < hiddenDates.length; i++) {
      var startDate = hiddenDates[i].start;
      var endDate = hiddenDates[i].end;
      // if time after the cutout, and the
      if (startDate >= range.start && endDate < range.end) {
        if (time >= endDate) {
          timeOffset += endDate - startDate;
        }
      }
    }
    return timeOffset;
  };

  /**
   * sum the duration from start to finish, including the hidden duration,
   * until the required amount has been reached, return the accumulated hidden duration
   * @param hiddenDates
   * @param range
   * @param time
   * @returns {{duration: number, time: *, offset: number}}
   */
  exports.getAccumulatedHiddenDuration = function (hiddenDates, range, requiredDuration) {
    var hiddenDuration = 0;
    var duration = 0;
    var previousPoint = range.start;
    //exports.printDates(hiddenDates)
    for (var i = 0; i < hiddenDates.length; i++) {
      var startDate = hiddenDates[i].start;
      var endDate = hiddenDates[i].end;
      // if time after the cutout, and the
      if (startDate >= range.start && endDate < range.end) {
        duration += startDate - previousPoint;
        previousPoint = endDate;
        if (duration >= requiredDuration) {
          break;
        } else {
          hiddenDuration += endDate - startDate;
        }
      }
    }

    return hiddenDuration;
  };

  /**
   * used to step over to either side of a hidden block. Correction is disabled on tablets, might be set to true
   * @param hiddenDates
   * @param time
   * @param direction
   * @param correctionEnabled
   * @returns {*}
   */
  exports.snapAwayFromHidden = function (hiddenDates, time, direction, correctionEnabled) {
    var isHidden = exports.isHidden(time, hiddenDates);
    if (isHidden.hidden == true) {
      if (direction < 0) {
        if (correctionEnabled == true) {
          return isHidden.startDate - (isHidden.endDate - time) - 1;
        } else {
          return isHidden.startDate - 1;
        }
      } else {
        if (correctionEnabled == true) {
          return isHidden.endDate + (time - isHidden.startDate) + 1;
        } else {
          return isHidden.endDate + 1;
        }
      }
    } else {
      return time;
    }
  };

  /**
   * Check if a time is hidden
   *
   * @param time
   * @param hiddenDates
   * @returns {{hidden: boolean, startDate: Window.start, endDate: *}}
   */
  exports.isHidden = function (time, hiddenDates) {
    for (var i = 0; i < hiddenDates.length; i++) {
      var startDate = hiddenDates[i].start;
      var endDate = hiddenDates[i].end;

      if (time >= startDate && time < endDate) {
        // if the start is entering a hidden zone
        return { hidden: true, startDate: startDate, endDate: endDate };
        break;
      }
    }
    return { hidden: false, startDate: startDate, endDate: endDate };
  };

/***/ },
/* 27 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Emitter = __webpack_require__(12);
  var Hammer = __webpack_require__(20);
  var hammerUtil = __webpack_require__(24);
  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var Range = __webpack_require__(23);
  var ItemSet = __webpack_require__(28);
  var TimeAxis = __webpack_require__(38);
  var Activator = __webpack_require__(39);
  var DateUtil = __webpack_require__(26);
  var CustomTime = __webpack_require__(41);

  /**
   * Create a timeline visualization
   * @constructor
   */
  function Core() {}

  // turn Core into an event emitter
  Emitter(Core.prototype);

  /**
   * Create the main DOM for the Core: a root panel containing left, right,
   * top, bottom, content, and background panel.
   * @param {Element} container  The container element where the Core will
   *                             be attached.
   * @protected
   */
  Core.prototype._create = function (container) {
    this.dom = {};

    this.dom.container = container;

    this.dom.root = document.createElement('div');
    this.dom.background = document.createElement('div');
    this.dom.backgroundVertical = document.createElement('div');
    this.dom.backgroundHorizontal = document.createElement('div');
    this.dom.centerContainer = document.createElement('div');
    this.dom.leftContainer = document.createElement('div');
    this.dom.rightContainer = document.createElement('div');
    this.dom.center = document.createElement('div');
    this.dom.left = document.createElement('div');
    this.dom.right = document.createElement('div');
    this.dom.top = document.createElement('div');
    this.dom.bottom = document.createElement('div');
    this.dom.shadowTop = document.createElement('div');
    this.dom.shadowBottom = document.createElement('div');
    this.dom.shadowTopLeft = document.createElement('div');
    this.dom.shadowBottomLeft = document.createElement('div');
    this.dom.shadowTopRight = document.createElement('div');
    this.dom.shadowBottomRight = document.createElement('div');

    this.dom.root.className = 'vis-timeline';
    this.dom.background.className = 'vis-panel vis-background';
    this.dom.backgroundVertical.className = 'vis-panel vis-background vis-vertical';
    this.dom.backgroundHorizontal.className = 'vis-panel vis-background vis-horizontal';
    this.dom.centerContainer.className = 'vis-panel vis-center';
    this.dom.leftContainer.className = 'vis-panel vis-left';
    this.dom.rightContainer.className = 'vis-panel vis-right';
    this.dom.top.className = 'vis-panel vis-top';
    this.dom.bottom.className = 'vis-panel vis-bottom';
    this.dom.left.className = 'vis-content';
    this.dom.center.className = 'vis-content';
    this.dom.right.className = 'vis-content';
    this.dom.shadowTop.className = 'vis-shadow vis-top';
    this.dom.shadowBottom.className = 'vis-shadow vis-bottom';
    this.dom.shadowTopLeft.className = 'vis-shadow vis-top';
    this.dom.shadowBottomLeft.className = 'vis-shadow vis-bottom';
    this.dom.shadowTopRight.className = 'vis-shadow vis-top';
    this.dom.shadowBottomRight.className = 'vis-shadow vis-bottom';

    this.dom.root.appendChild(this.dom.background);
    this.dom.root.appendChild(this.dom.backgroundVertical);
    this.dom.root.appendChild(this.dom.backgroundHorizontal);
    this.dom.root.appendChild(this.dom.centerContainer);
    this.dom.root.appendChild(this.dom.leftContainer);
    this.dom.root.appendChild(this.dom.rightContainer);
    this.dom.root.appendChild(this.dom.top);
    this.dom.root.appendChild(this.dom.bottom);

    this.dom.centerContainer.appendChild(this.dom.center);
    this.dom.leftContainer.appendChild(this.dom.left);
    this.dom.rightContainer.appendChild(this.dom.right);

    this.dom.centerContainer.appendChild(this.dom.shadowTop);
    this.dom.centerContainer.appendChild(this.dom.shadowBottom);
    this.dom.leftContainer.appendChild(this.dom.shadowTopLeft);
    this.dom.leftContainer.appendChild(this.dom.shadowBottomLeft);
    this.dom.rightContainer.appendChild(this.dom.shadowTopRight);
    this.dom.rightContainer.appendChild(this.dom.shadowBottomRight);

    this.on('rangechange', (function () {
      if (this.initialDrawDone === true) {
        this._redraw(); // this allows overriding the _redraw method
      }
    }).bind(this));
    this.on('touch', this._onTouch.bind(this));
    this.on('pan', this._onDrag.bind(this));

    var me = this;
    this.on('_change', function (properties) {
      if (properties && properties.queue == true) {
        // redraw once on next tick
        if (!me._redrawTimer) {
          me._redrawTimer = setTimeout(function () {
            me._redrawTimer = null;
            me._redraw();
          }, 0);
        }
      } else {
        // redraw immediately
        me._redraw();
      }
    });

    // create event listeners for all interesting events, these events will be
    // emitted via emitter
    this.hammer = new Hammer(this.dom.root);
    this.hammer.get('pinch').set({ enable: true });
    this.hammer.get('pan').set({ threshold: 5, direction: 30 }); // 30 is ALL_DIRECTIONS in hammer.
    this.listeners = {};

    var events = ['tap', 'doubletap', 'press', 'pinch', 'pan', 'panstart', 'panmove', 'panend'
    // TODO: cleanup
    //'touch', 'pinch',
    //'tap', 'doubletap', 'hold',
    //'dragstart', 'drag', 'dragend',
    //'mousewheel', 'DOMMouseScroll' // DOMMouseScroll is needed for Firefox
    ];
    events.forEach(function (type) {
      var listener = function listener(event) {
        if (me.isActive()) {
          me.emit(type, event);
        }
      };
      me.hammer.on(type, listener);
      me.listeners[type] = listener;
    });

    // emulate a touch event (emitted before the start of a pan, pinch, tap, or press)
    hammerUtil.onTouch(this.hammer, (function (event) {
      me.emit('touch', event);
    }).bind(this));

    // emulate a release event (emitted after a pan, pinch, tap, or press)
    hammerUtil.onRelease(this.hammer, (function (event) {
      me.emit('release', event);
    }).bind(this));

    function onMouseWheel(event) {
      if (me.isActive()) {
        me.emit('mousewheel', event);
      }
    }
    this.dom.root.addEventListener('mousewheel', onMouseWheel);
    this.dom.root.addEventListener('DOMMouseScroll', onMouseWheel);

    // size properties of each of the panels
    this.props = {
      root: {},
      background: {},
      centerContainer: {},
      leftContainer: {},
      rightContainer: {},
      center: {},
      left: {},
      right: {},
      top: {},
      bottom: {},
      border: {},
      scrollTop: 0,
      scrollTopMin: 0
    };

    this.customTimes = [];

    // store state information needed for touch events
    this.touch = {};

    this.redrawCount = 0;
    this.initialDrawDone = false;

    // attach the root panel to the provided container
    if (!container) throw new Error('No container provided');
    container.appendChild(this.dom.root);
  };

  /**
   * Set options. Options will be passed to all components loaded in the Timeline.
   * @param {Object} [options]
   *                           {String} orientation
   *                              Vertical orientation for the Timeline,
   *                              can be 'bottom' (default) or 'top'.
   *                           {String | Number} width
   *                              Width for the timeline, a number in pixels or
   *                              a css string like '1000px' or '75%'. '100%' by default.
   *                           {String | Number} height
   *                              Fixed height for the Timeline, a number in pixels or
   *                              a css string like '400px' or '75%'. If undefined,
   *                              The Timeline will automatically size such that
   *                              its contents fit.
   *                           {String | Number} minHeight
   *                              Minimum height for the Timeline, a number in pixels or
   *                              a css string like '400px' or '75%'.
   *                           {String | Number} maxHeight
   *                              Maximum height for the Timeline, a number in pixels or
   *                              a css string like '400px' or '75%'.
   *                           {Number | Date | String} start
   *                              Start date for the visible window
   *                           {Number | Date | String} end
   *                              End date for the visible window
   */
  Core.prototype.setOptions = function (options) {
    if (options) {
      // copy the known options
      var fields = ['width', 'height', 'minHeight', 'maxHeight', 'autoResize', 'start', 'end', 'clickToUse', 'dataAttributes', 'hiddenDates', 'locale', 'locales', 'moment', 'throttleRedraw'];
      util.selectiveExtend(fields, this.options, options);

      this.options.orientation = { item: undefined, axis: undefined };
      if ('orientation' in options) {
        if (typeof options.orientation === 'string') {
          this.options.orientation = {
            item: options.orientation,
            axis: options.orientation
          };
        } else if (typeof options.orientation === 'object') {
          if ('item' in options.orientation) {
            this.options.orientation.item = options.orientation.item;
          }
          if ('axis' in options.orientation) {
            this.options.orientation.axis = options.orientation.axis;
          }
        }
      }

      if (this.options.orientation.axis === 'both') {
        if (!this.timeAxis2) {
          var timeAxis2 = this.timeAxis2 = new TimeAxis(this.body);
          timeAxis2.setOptions = function (options) {
            var _options = options ? util.extend({}, options) : {};
            _options.orientation = 'top'; // override the orientation option, always top
            TimeAxis.prototype.setOptions.call(timeAxis2, _options);
          };
          this.components.push(timeAxis2);
        }
      } else {
        if (this.timeAxis2) {
          var index = this.components.indexOf(this.timeAxis2);
          if (index !== -1) {
            this.components.splice(index, 1);
          }
          this.timeAxis2.destroy();
          this.timeAxis2 = null;
        }
      }

      // if the graph2d's drawPoints is a function delegate the callback to the onRender property
      if (typeof options.drawPoints == 'function') {
        options.drawPoints = {
          onRender: options.drawPoints
        };
      }

      if ('hiddenDates' in this.options) {
        DateUtil.convertHiddenOptions(this.options.moment, this.body, this.options.hiddenDates);
      }

      if ('clickToUse' in options) {
        if (options.clickToUse) {
          if (!this.activator) {
            this.activator = new Activator(this.dom.root);
          }
        } else {
          if (this.activator) {
            this.activator.destroy();
            delete this.activator;
          }
        }
      }

      if ('showCustomTime' in options) {
        throw new Error('Option `showCustomTime` is deprecated. Create a custom time bar via timeline.addCustomTime(time [, id])');
      }

      // enable/disable autoResize
      this._initAutoResize();
    }

    // propagate options to all components
    this.components.forEach(function (component) {
      return component.setOptions(options);
    });

    // enable/disable configure
    if ('configure' in options) {
      if (!this.configurator) {
        this.configurator = this._createConfigurator();
      }

      this.configurator.setOptions(options.configure);

      // collect the settings of all components, and pass them to the configuration system
      var appliedOptions = util.deepExtend({}, this.options);
      this.components.forEach(function (component) {
        util.deepExtend(appliedOptions, component.options);
      });
      this.configurator.setModuleOptions({ global: appliedOptions });
    }

    // override redraw with a throttled version
    if (!this._origRedraw) {
      this._origRedraw = this._redraw.bind(this);
      this._redraw = util.throttle(this._origRedraw, this.options.throttleRedraw);
    } else {
      // Not the initial run: redraw everything
      this._redraw();
    }
  };

  /**
   * Returns true when the Timeline is active.
   * @returns {boolean}
   */
  Core.prototype.isActive = function () {
    return !this.activator || this.activator.active;
  };

  /**
   * Destroy the Core, clean up all DOM elements and event listeners.
   */
  Core.prototype.destroy = function () {
    // unbind datasets
    this.setItems(null);
    this.setGroups(null);

    // remove all event listeners
    this.off();

    // stop checking for changed size
    this._stopAutoResize();

    // remove from DOM
    if (this.dom.root.parentNode) {
      this.dom.root.parentNode.removeChild(this.dom.root);
    }
    this.dom = null;

    // remove Activator
    if (this.activator) {
      this.activator.destroy();
      delete this.activator;
    }

    // cleanup hammer touch events
    for (var event in this.listeners) {
      if (this.listeners.hasOwnProperty(event)) {
        delete this.listeners[event];
      }
    }
    this.listeners = null;
    this.hammer = null;

    // give all components the opportunity to cleanup
    this.components.forEach(function (component) {
      return component.destroy();
    });

    this.body = null;
  };

  /**
   * Set a custom time bar
   * @param {Date} time
   * @param {number} [id=undefined] Optional id of the custom time bar to be adjusted.
   */
  Core.prototype.setCustomTime = function (time, id) {
    var customTimes = this.customTimes.filter(function (component) {
      return id === component.options.id;
    });

    if (customTimes.length === 0) {
      throw new Error('No custom time bar found with id ' + JSON.stringify(id));
    }

    if (customTimes.length > 0) {
      customTimes[0].setCustomTime(time);
    }
  };

  /**
   * Retrieve the current custom time.
   * @param {number} [id=undefined]    Id of the custom time bar.
   * @return {Date | undefined} customTime
   */
  Core.prototype.getCustomTime = function (id) {
    var customTimes = this.customTimes.filter(function (component) {
      return component.options.id === id;
    });

    if (customTimes.length === 0) {
      throw new Error('No custom time bar found with id ' + JSON.stringify(id));
    }
    return customTimes[0].getCustomTime();
  };

  /**
   * Set a custom title for the custom time bar.
   * @param {String} [title] Custom title
   * @param {number} [id=undefined]    Id of the custom time bar.
   */
  Core.prototype.setCustomTimeTitle = function (title, id) {
    var customTimes = this.customTimes.filter(function (component) {
      return component.options.id === id;
    });

    if (customTimes.length === 0) {
      throw new Error('No custom time bar found with id ' + JSON.stringify(id));
    }
    if (customTimes.length > 0) {
      return customTimes[0].setCustomTitle(title);
    }
  };

  /**
   * Retrieve meta information from an event.
   * Should be overridden by classes extending Core
   * @param {Event} event
   * @return {Object} An object with related information.
   */
  Core.prototype.getEventProperties = function (event) {
    return { event: event };
  };

  /**
   * Add custom vertical bar
   * @param {Date | String | Number} [time]  A Date, unix timestamp, or
   *                                         ISO date string. Time point where
   *                                         the new bar should be placed.
   *                                         If not provided, `new Date()` will
   *                                         be used.
   * @param {Number | String} [id=undefined] Id of the new bar. Optional
   * @return {Number | String}               Returns the id of the new bar
   */
  Core.prototype.addCustomTime = function (time, id) {
    var timestamp = time !== undefined ? util.convert(time, 'Date').valueOf() : new Date();

    var exists = this.customTimes.some(function (customTime) {
      return customTime.options.id === id;
    });
    if (exists) {
      throw new Error('A custom time with id ' + JSON.stringify(id) + ' already exists');
    }

    var customTime = new CustomTime(this.body, util.extend({}, this.options, {
      time: timestamp,
      id: id
    }));

    this.customTimes.push(customTime);
    this.components.push(customTime);
    this._redraw();

    return id;
  };

  /**
   * Remove previously added custom bar
   * @param {int} id ID of the custom bar to be removed
   * @return {boolean} True if the bar exists and is removed, false otherwise
   */
  Core.prototype.removeCustomTime = function (id) {
    var customTimes = this.customTimes.filter(function (bar) {
      return bar.options.id === id;
    });

    if (customTimes.length === 0) {
      throw new Error('No custom time bar found with id ' + JSON.stringify(id));
    }

    customTimes.forEach((function (customTime) {
      this.customTimes.splice(this.customTimes.indexOf(customTime), 1);
      this.components.splice(this.components.indexOf(customTime), 1);
      customTime.destroy();
    }).bind(this));
  };

  /**
   * Get the id's of the currently visible items.
   * @returns {Array} The ids of the visible items
   */
  Core.prototype.getVisibleItems = function () {
    return this.itemSet && this.itemSet.getVisibleItems() || [];
  };

  /**
   * Set Core window such that it fits all items
   * @param {Object} [options]  Available options:
   *                                `animation: boolean | {duration: number, easingFunction: string}`
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   */
  Core.prototype.fit = function (options) {
    var range = this.getDataRange();

    // skip range set if there is no min and max date
    if (range.min === null && range.max === null) {
      return;
    }

    // apply a margin of 1% left and right of the data
    var interval = range.max - range.min;
    var min = new Date(range.min.valueOf() - interval * 0.01);
    var max = new Date(range.max.valueOf() + interval * 0.01);

    var animation = options && options.animation !== undefined ? options.animation : true;
    this.range.setRange(min, max, animation);
  };

  /**
   * Calculate the data range of the items start and end dates
   * @returns {{min: Date | null, max: Date | null}}
   * @protected
   */
  Core.prototype.getDataRange = function () {
    // must be implemented by Timeline and Graph2d
    throw new Error('Cannot invoke abstract method getDataRange');
  };

  /**
   * Set the visible window. Both parameters are optional, you can change only
   * start or only end. Syntax:
   *
   *     TimeLine.setWindow(start, end)
   *     TimeLine.setWindow(start, end, options)
   *     TimeLine.setWindow(range)
   *
   * Where start and end can be a Date, number, or string, and range is an
   * object with properties start and end.
   *
   * @param {Date | Number | String | Object} [start] Start date of visible window
   * @param {Date | Number | String} [end]            End date of visible window
   * @param {Object} [options]  Available options:
   *                                `animation: boolean | {duration: number, easingFunction: string}`
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   */
  Core.prototype.setWindow = function (start, end, options) {
    var animation;
    if (arguments.length == 1) {
      var range = arguments[0];
      animation = range.animation !== undefined ? range.animation : true;
      this.range.setRange(range.start, range.end, animation);
    } else {
      animation = options && options.animation !== undefined ? options.animation : true;
      this.range.setRange(start, end, animation);
    }
  };

  /**
   * Move the window such that given time is centered on screen.
   * @param {Date | Number | String} time
   * @param {Object} [options]  Available options:
   *                                `animation: boolean | {duration: number, easingFunction: string}`
   *                                    If true (default), the range is animated
   *                                    smoothly to the new window. An object can be
   *                                    provided to specify duration and easing function.
   *                                    Default duration is 500 ms, and default easing
   *                                    function is 'easeInOutQuad'.
   */
  Core.prototype.moveTo = function (time, options) {
    var interval = this.range.end - this.range.start;
    var t = util.convert(time, 'Date').valueOf();

    var start = t - interval / 2;
    var end = t + interval / 2;
    var animation = options && options.animation !== undefined ? options.animation : true;

    this.range.setRange(start, end, animation);
  };

  /**
   * Get the visible window
   * @return {{start: Date, end: Date}}   Visible range
   */
  Core.prototype.getWindow = function () {
    var range = this.range.getRange();
    return {
      start: new Date(range.start),
      end: new Date(range.end)
    };
  };

  /**
   * Force a redraw. Can be overridden by implementations of Core
   *
   * Note: this function will be overridden on construction with a trottled version
   */
  Core.prototype.redraw = function () {
    this._redraw();
  };

  /**
   * Redraw for internal use. Redraws all components. See also the public
   * method redraw.
   * @protected
   */
  Core.prototype._redraw = function () {
    this.redrawCount++;
    var resized = false;
    var options = this.options;
    var props = this.props;
    var dom = this.dom;

    if (!dom || !dom.container || dom.container.clientWidth == 0) return; // when destroyed, or invisible

    DateUtil.updateHiddenDates(this.options.moment, this.body, this.options.hiddenDates);

    // update class names
    if (options.orientation == 'top') {
      util.addClassName(dom.root, 'vis-top');
      util.removeClassName(dom.root, 'vis-bottom');
    } else {
      util.removeClassName(dom.root, 'vis-top');
      util.addClassName(dom.root, 'vis-bottom');
    }

    // update root width and height options
    dom.root.style.maxHeight = util.option.asSize(options.maxHeight, '');
    dom.root.style.minHeight = util.option.asSize(options.minHeight, '');
    dom.root.style.width = util.option.asSize(options.width, '');

    // calculate border widths
    props.border.left = (dom.centerContainer.offsetWidth - dom.centerContainer.clientWidth) / 2;
    props.border.right = props.border.left;
    props.border.top = (dom.centerContainer.offsetHeight - dom.centerContainer.clientHeight) / 2;
    props.border.bottom = props.border.top;
    var borderRootHeight = dom.root.offsetHeight - dom.root.clientHeight;
    var borderRootWidth = dom.root.offsetWidth - dom.root.clientWidth;

    // workaround for a bug in IE: the clientWidth of an element with
    // a height:0px and overflow:hidden is not calculated and always has value 0
    if (dom.centerContainer.clientHeight === 0) {
      props.border.left = props.border.top;
      props.border.right = props.border.left;
    }
    if (dom.root.clientHeight === 0) {
      borderRootWidth = borderRootHeight;
    }

    // calculate the heights. If any of the side panels is empty, we set the height to
    // minus the border width, such that the border will be invisible
    props.center.height = dom.center.offsetHeight;
    props.left.height = dom.left.offsetHeight;
    props.right.height = dom.right.offsetHeight;
    props.top.height = dom.top.clientHeight || -props.border.top;
    props.bottom.height = dom.bottom.clientHeight || -props.border.bottom;

    // TODO: compensate borders when any of the panels is empty.

    // apply auto height
    // TODO: only calculate autoHeight when needed (else we cause an extra reflow/repaint of the DOM)
    var contentHeight = Math.max(props.left.height, props.center.height, props.right.height);
    var autoHeight = props.top.height + contentHeight + props.bottom.height + borderRootHeight + props.border.top + props.border.bottom;
    dom.root.style.height = util.option.asSize(options.height, autoHeight + 'px');

    // calculate heights of the content panels
    props.root.height = dom.root.offsetHeight;
    props.background.height = props.root.height - borderRootHeight;
    var containerHeight = props.root.height - props.top.height - props.bottom.height - borderRootHeight;
    props.centerContainer.height = containerHeight;
    props.leftContainer.height = containerHeight;
    props.rightContainer.height = props.leftContainer.height;

    // calculate the widths of the panels
    props.root.width = dom.root.offsetWidth;
    props.background.width = props.root.width - borderRootWidth;
    props.left.width = dom.leftContainer.clientWidth || -props.border.left;
    props.leftContainer.width = props.left.width;
    props.right.width = dom.rightContainer.clientWidth || -props.border.right;
    props.rightContainer.width = props.right.width;
    var centerWidth = props.root.width - props.left.width - props.right.width - borderRootWidth;
    props.center.width = centerWidth;
    props.centerContainer.width = centerWidth;
    props.top.width = centerWidth;
    props.bottom.width = centerWidth;

    // resize the panels
    dom.background.style.height = props.background.height + 'px';
    dom.backgroundVertical.style.height = props.background.height + 'px';
    dom.backgroundHorizontal.style.height = props.centerContainer.height + 'px';
    dom.centerContainer.style.height = props.centerContainer.height + 'px';
    dom.leftContainer.style.height = props.leftContainer.height + 'px';
    dom.rightContainer.style.height = props.rightContainer.height + 'px';

    dom.background.style.width = props.background.width + 'px';
    dom.backgroundVertical.style.width = props.centerContainer.width + 'px';
    dom.backgroundHorizontal.style.width = props.background.width + 'px';
    dom.centerContainer.style.width = props.center.width + 'px';
    dom.top.style.width = props.top.width + 'px';
    dom.bottom.style.width = props.bottom.width + 'px';

    // reposition the panels
    dom.background.style.left = '0';
    dom.background.style.top = '0';
    dom.backgroundVertical.style.left = props.left.width + props.border.left + 'px';
    dom.backgroundVertical.style.top = '0';
    dom.backgroundHorizontal.style.left = '0';
    dom.backgroundHorizontal.style.top = props.top.height + 'px';
    dom.centerContainer.style.left = props.left.width + 'px';
    dom.centerContainer.style.top = props.top.height + 'px';
    dom.leftContainer.style.left = '0';
    dom.leftContainer.style.top = props.top.height + 'px';
    dom.rightContainer.style.left = props.left.width + props.center.width + 'px';
    dom.rightContainer.style.top = props.top.height + 'px';
    dom.top.style.left = props.left.width + 'px';
    dom.top.style.top = '0';
    dom.bottom.style.left = props.left.width + 'px';
    dom.bottom.style.top = props.top.height + props.centerContainer.height + 'px';

    // update the scrollTop, feasible range for the offset can be changed
    // when the height of the Core or of the contents of the center changed
    this._updateScrollTop();

    // reposition the scrollable contents
    var offset = this.props.scrollTop;
    if (options.orientation.item != 'top') {
      offset += Math.max(this.props.centerContainer.height - this.props.center.height - this.props.border.top - this.props.border.bottom, 0);
    }
    dom.center.style.left = '0';
    dom.center.style.top = offset + 'px';
    dom.left.style.left = '0';
    dom.left.style.top = offset + 'px';
    dom.right.style.left = '0';
    dom.right.style.top = offset + 'px';

    // show shadows when vertical scrolling is available
    var visibilityTop = this.props.scrollTop == 0 ? 'hidden' : '';
    var visibilityBottom = this.props.scrollTop == this.props.scrollTopMin ? 'hidden' : '';
    dom.shadowTop.style.visibility = visibilityTop;
    dom.shadowBottom.style.visibility = visibilityBottom;
    dom.shadowTopLeft.style.visibility = visibilityTop;
    dom.shadowBottomLeft.style.visibility = visibilityBottom;
    dom.shadowTopRight.style.visibility = visibilityTop;
    dom.shadowBottomRight.style.visibility = visibilityBottom;

    // redraw all components
    this.components.forEach(function (component) {
      resized = component.redraw() || resized;
    });
    var MAX_REDRAW = 5;
    if (resized) {
      if (this.redrawCount < MAX_REDRAW) {
        this.body.emitter.emit('_change');
        return;
      } else {
        console.log('WARNING: infinite loop in redraw?');
      }
    } else {
      this.redrawCount = 0;
    }
    this.initialDrawDone = true;

    //Emit public 'changed' event for UI updates, see issue #1592
    this.body.emitter.emit("changed");
  };

  // TODO: deprecated since version 1.1.0, remove some day
  Core.prototype.repaint = function () {
    throw new Error('Function repaint is deprecated. Use redraw instead.');
  };

  /**
   * Set a current time. This can be used for example to ensure that a client's
   * time is synchronized with a shared server time.
   * Only applicable when option `showCurrentTime` is true.
   * @param {Date | String | Number} time     A Date, unix timestamp, or
   *                                          ISO date string.
   */
  Core.prototype.setCurrentTime = function (time) {
    if (!this.currentTime) {
      throw new Error('Option showCurrentTime must be true');
    }

    this.currentTime.setCurrentTime(time);
  };

  /**
   * Get the current time.
   * Only applicable when option `showCurrentTime` is true.
   * @return {Date} Returns the current time.
   */
  Core.prototype.getCurrentTime = function () {
    if (!this.currentTime) {
      throw new Error('Option showCurrentTime must be true');
    }

    return this.currentTime.getCurrentTime();
  };

  /**
   * Convert a position on screen (pixels) to a datetime
   * @param {int}     x    Position on the screen in pixels
   * @return {Date}   time The datetime the corresponds with given position x
   * @protected
   */
  // TODO: move this function to Range
  Core.prototype._toTime = function (x) {
    return DateUtil.toTime(this, x, this.props.center.width);
  };

  /**
   * Convert a position on the global screen (pixels) to a datetime
   * @param {int}     x    Position on the screen in pixels
   * @return {Date}   time The datetime the corresponds with given position x
   * @protected
   */
  // TODO: move this function to Range
  Core.prototype._toGlobalTime = function (x) {
    return DateUtil.toTime(this, x, this.props.root.width);
    //var conversion = this.range.conversion(this.props.root.width);
    //return new Date(x / conversion.scale + conversion.offset);
  };

  /**
   * Convert a datetime (Date object) into a position on the screen
   * @param {Date}   time A date
   * @return {int}   x    The position on the screen in pixels which corresponds
   *                      with the given date.
   * @protected
   */
  // TODO: move this function to Range
  Core.prototype._toScreen = function (time) {
    return DateUtil.toScreen(this, time, this.props.center.width);
  };

  /**
   * Convert a datetime (Date object) into a position on the root
   * This is used to get the pixel density estimate for the screen, not the center panel
   * @param {Date}   time A date
   * @return {int}   x    The position on root in pixels which corresponds
   *                      with the given date.
   * @protected
   */
  // TODO: move this function to Range
  Core.prototype._toGlobalScreen = function (time) {
    return DateUtil.toScreen(this, time, this.props.root.width);
    //var conversion = this.range.conversion(this.props.root.width);
    //return (time.valueOf() - conversion.offset) * conversion.scale;
  };

  /**
   * Initialize watching when option autoResize is true
   * @private
   */
  Core.prototype._initAutoResize = function () {
    if (this.options.autoResize == true) {
      this._startAutoResize();
    } else {
      this._stopAutoResize();
    }
  };

  /**
   * Watch for changes in the size of the container. On resize, the Panel will
   * automatically redraw itself.
   * @private
   */
  Core.prototype._startAutoResize = function () {
    var me = this;

    this._stopAutoResize();

    this._onResize = function () {
      if (me.options.autoResize != true) {
        // stop watching when the option autoResize is changed to false
        me._stopAutoResize();
        return;
      }

      if (me.dom.root) {
        // check whether the frame is resized
        // Note: we compare offsetWidth here, not clientWidth. For some reason,
        // IE does not restore the clientWidth from 0 to the actual width after
        // changing the timeline's container display style from none to visible
        if (me.dom.root.offsetWidth != me.props.lastWidth || me.dom.root.offsetHeight != me.props.lastHeight) {
          me.props.lastWidth = me.dom.root.offsetWidth;
          me.props.lastHeight = me.dom.root.offsetHeight;

          me.body.emitter.emit('_change');
        }
      }
    };

    // add event listener to window resize
    util.addEventListener(window, 'resize', this._onResize);

    //Prevent initial unnecessary redraw
    if (me.dom.root) {
      me.props.lastWidth = me.dom.root.offsetWidth;
      me.props.lastHeight = me.dom.root.offsetHeight;
    }

    this.watchTimer = setInterval(this._onResize, 1000);
  };

  /**
   * Stop watching for a resize of the frame.
   * @private
   */
  Core.prototype._stopAutoResize = function () {
    if (this.watchTimer) {
      clearInterval(this.watchTimer);
      this.watchTimer = undefined;
    }

    // remove event listener on window.resize
    if (this._onResize) {
      util.removeEventListener(window, 'resize', this._onResize);
      this._onResize = null;
    }
  };

  /**
   * Start moving the timeline vertically
   * @param {Event} event
   * @private
   */
  Core.prototype._onTouch = function (event) {
    this.touch.allowDragging = true;
    this.touch.initialScrollTop = this.props.scrollTop;
  };

  /**
   * Start moving the timeline vertically
   * @param {Event} event
   * @private
   */
  Core.prototype._onPinch = function (event) {
    this.touch.allowDragging = false;
  };

  /**
   * Move the timeline vertically
   * @param {Event} event
   * @private
   */
  Core.prototype._onDrag = function (event) {
    // refuse to drag when we where pinching to prevent the timeline make a jump
    // when releasing the fingers in opposite order from the touch screen
    if (!this.touch.allowDragging) return;

    var delta = event.deltaY;

    var oldScrollTop = this._getScrollTop();
    var newScrollTop = this._setScrollTop(this.touch.initialScrollTop + delta);

    if (newScrollTop != oldScrollTop) {
      this.emit("verticalDrag");
    }
  };

  /**
   * Apply a scrollTop
   * @param {Number} scrollTop
   * @returns {Number} scrollTop  Returns the applied scrollTop
   * @private
   */
  Core.prototype._setScrollTop = function (scrollTop) {
    this.props.scrollTop = scrollTop;
    this._updateScrollTop();
    return this.props.scrollTop;
  };

  /**
   * Update the current scrollTop when the height of  the containers has been changed
   * @returns {Number} scrollTop  Returns the applied scrollTop
   * @private
   */
  Core.prototype._updateScrollTop = function () {
    // recalculate the scrollTopMin
    var scrollTopMin = Math.min(this.props.centerContainer.height - this.props.center.height, 0); // is negative or zero
    if (scrollTopMin != this.props.scrollTopMin) {
      // in case of bottom orientation, change the scrollTop such that the contents
      // do not move relative to the time axis at the bottom
      if (this.options.orientation.item != 'top') {
        this.props.scrollTop += scrollTopMin - this.props.scrollTopMin;
      }
      this.props.scrollTopMin = scrollTopMin;
    }

    // limit the scrollTop to the feasible scroll range
    if (this.props.scrollTop > 0) this.props.scrollTop = 0;
    if (this.props.scrollTop < scrollTopMin) this.props.scrollTop = scrollTopMin;

    return this.props.scrollTop;
  };

  /**
   * Get the current scrollTop
   * @returns {number} scrollTop
   * @private
   */
  Core.prototype._getScrollTop = function () {
    return this.props.scrollTop;
  };

  /**
   * Load a configurator
   * @return {Object}
   * @private
   */
  Core.prototype._createConfigurator = function () {
    throw new Error('Cannot invoke abstract method _createConfigurator');
  };

  module.exports = Core;

/***/ },
/* 28 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Hammer = __webpack_require__(20);
  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var TimeStep = __webpack_require__(29);
  var Component = __webpack_require__(25);
  var Group = __webpack_require__(30);
  var BackgroundGroup = __webpack_require__(34);
  var BoxItem = __webpack_require__(35);
  var PointItem = __webpack_require__(36);
  var RangeItem = __webpack_require__(32);
  var BackgroundItem = __webpack_require__(37);

  var UNGROUPED = '__ungrouped__'; // reserved group id for ungrouped items
  var BACKGROUND = '__background__'; // reserved group id for background items without group

  /**
   * An ItemSet holds a set of items and ranges which can be displayed in a
   * range. The width is determined by the parent of the ItemSet, and the height
   * is determined by the size of the items.
   * @param {{dom: Object, domProps: Object, emitter: Emitter, range: Range}} body
   * @param {Object} [options]      See ItemSet.setOptions for the available options.
   * @constructor ItemSet
   * @extends Component
   */
  function ItemSet(body, options) {
    this.body = body;

    this.defaultOptions = {
      type: null, // 'box', 'point', 'range', 'background'
      orientation: {
        item: 'bottom' // item orientation: 'top' or 'bottom'
      },
      align: 'auto', // alignment of box items
      stack: true,
      groupOrderSwap: function groupOrderSwap(fromGroup, toGroup, groups) {
        var targetOrder = toGroup.order;
        toGroup.order = fromGroup.order;
        fromGroup.order = targetOrder;
      },
      groupOrder: 'order',

      selectable: true,
      multiselect: false,
      itemsAlwaysDraggable: false,

      editable: {
        updateTime: false,
        updateGroup: false,
        add: false,
        remove: false
      },

      groupEditable: {
        order: false,
        add: false,
        remove: false
      },

      snap: TimeStep.snap,

      onAdd: function onAdd(item, callback) {
        callback(item);
      },
      onUpdate: function onUpdate(item, callback) {
        callback(item);
      },
      onMove: function onMove(item, callback) {
        callback(item);
      },
      onRemove: function onRemove(item, callback) {
        callback(item);
      },
      onMoving: function onMoving(item, callback) {
        callback(item);
      },
      onAddGroup: function onAddGroup(item, callback) {
        callback(item);
      },
      onMoveGroup: function onMoveGroup(item, callback) {
        callback(item);
      },
      onRemoveGroup: function onRemoveGroup(item, callback) {
        callback(item);
      },

      margin: {
        item: {
          horizontal: 10,
          vertical: 10
        },
        axis: 20
      }
    };

    // options is shared by this ItemSet and all its items
    this.options = util.extend({}, this.defaultOptions);

    // options for getting items from the DataSet with the correct type
    this.itemOptions = {
      type: { start: 'Date', end: 'Date' }
    };

    this.conversion = {
      toScreen: body.util.toScreen,
      toTime: body.util.toTime
    };
    this.dom = {};
    this.props = {};
    this.hammer = null;

    var me = this;
    this.itemsData = null; // DataSet
    this.groupsData = null; // DataSet

    // listeners for the DataSet of the items
    this.itemListeners = {
      'add': function add(event, params, senderId) {
        me._onAdd(params.items);
      },
      'update': function update(event, params, senderId) {
        me._onUpdate(params.items);
      },
      'remove': function remove(event, params, senderId) {
        me._onRemove(params.items);
      }
    };

    // listeners for the DataSet of the groups
    this.groupListeners = {
      'add': function add(event, params, senderId) {
        me._onAddGroups(params.items);
      },
      'update': function update(event, params, senderId) {
        me._onUpdateGroups(params.items);
      },
      'remove': function remove(event, params, senderId) {
        me._onRemoveGroups(params.items);
      }
    };

    this.items = {}; // object with an Item for every data item
    this.groups = {}; // Group object for every group
    this.groupIds = [];

    this.selection = []; // list with the ids of all selected nodes
    this.stackDirty = true; // if true, all items will be restacked on next redraw

    this.touchParams = {}; // stores properties while dragging
    this.groupTouchParams = {};
    // create the HTML DOM

    this._create();

    this.setOptions(options);
  }

  ItemSet.prototype = new Component();

  // available item types will be registered here
  ItemSet.types = {
    background: BackgroundItem,
    box: BoxItem,
    range: RangeItem,
    point: PointItem
  };

  /**
   * Create the HTML DOM for the ItemSet
   */
  ItemSet.prototype._create = function () {
    var frame = document.createElement('div');
    frame.className = 'vis-itemset';
    frame['timeline-itemset'] = this;
    this.dom.frame = frame;

    // create background panel
    var background = document.createElement('div');
    background.className = 'vis-background';
    frame.appendChild(background);
    this.dom.background = background;

    // create foreground panel
    var foreground = document.createElement('div');
    foreground.className = 'vis-foreground';
    frame.appendChild(foreground);
    this.dom.foreground = foreground;

    // create axis panel
    var axis = document.createElement('div');
    axis.className = 'vis-axis';
    this.dom.axis = axis;

    // create labelset
    var labelSet = document.createElement('div');
    labelSet.className = 'vis-labelset';
    this.dom.labelSet = labelSet;

    // create ungrouped Group
    this._updateUngrouped();

    // create background Group
    var backgroundGroup = new BackgroundGroup(BACKGROUND, null, this);
    backgroundGroup.show();
    this.groups[BACKGROUND] = backgroundGroup;

    // attach event listeners
    // Note: we bind to the centerContainer for the case where the height
    //       of the center container is larger than of the ItemSet, so we
    //       can click in the empty area to create a new item or deselect an item.
    this.hammer = new Hammer(this.body.dom.centerContainer);

    // drag items when selected
    this.hammer.on('hammer.input', (function (event) {
      if (event.isFirst) {
        this._onTouch(event);
      }
    }).bind(this));
    this.hammer.on('panstart', this._onDragStart.bind(this));
    this.hammer.on('panmove', this._onDrag.bind(this));
    this.hammer.on('panend', this._onDragEnd.bind(this));
    this.hammer.get('pan').set({ threshold: 5, direction: 30 }); // 30 is ALL_DIRECTIONS in hammer.

    // single select (or unselect) when tapping an item
    this.hammer.on('tap', this._onSelectItem.bind(this));

    // multi select when holding mouse/touch, or on ctrl+click
    this.hammer.on('press', this._onMultiSelectItem.bind(this));

    // add item on doubletap
    this.hammer.on('doubletap', this._onAddItem.bind(this));

    this.groupHammer = new Hammer(this.body.dom.leftContainer);
    this.groupHammer.on('panstart', this._onGroupDragStart.bind(this));
    this.groupHammer.on('panmove', this._onGroupDrag.bind(this));
    this.groupHammer.on('panend', this._onGroupDragEnd.bind(this));
    this.groupHammer.get('pan').set({ threshold: 5, direction: 30 });

    // attach to the DOM
    this.show();
  };

  /**
   * Set options for the ItemSet. Existing options will be extended/overwritten.
   * @param {Object} [options] The following options are available:
   *                           {String} type
   *                              Default type for the items. Choose from 'box'
   *                              (default), 'point', 'range', or 'background'.
   *                              The default style can be overwritten by
   *                              individual items.
   *                           {String} align
   *                              Alignment for the items, only applicable for
   *                              BoxItem. Choose 'center' (default), 'left', or
   *                              'right'.
   *                           {String} orientation.item
   *                              Orientation of the item set. Choose 'top' or
   *                              'bottom' (default).
   *                           {Function} groupOrder
   *                              A sorting function for ordering groups
   *                           {Boolean} stack
   *                              If true (default), items will be stacked on
   *                              top of each other.
   *                           {Number} margin.axis
   *                              Margin between the axis and the items in pixels.
   *                              Default is 20.
   *                           {Number} margin.item.horizontal
   *                              Horizontal margin between items in pixels.
   *                              Default is 10.
   *                           {Number} margin.item.vertical
   *                              Vertical Margin between items in pixels.
   *                              Default is 10.
   *                           {Number} margin.item
   *                              Margin between items in pixels in both horizontal
   *                              and vertical direction. Default is 10.
   *                           {Number} margin
   *                              Set margin for both axis and items in pixels.
   *                           {Boolean} selectable
   *                              If true (default), items can be selected.
   *                           {Boolean} multiselect
   *                              If true, multiple items can be selected.
   *                              False by default.
   *                           {Boolean} editable
   *                              Set all editable options to true or false
   *                           {Boolean} editable.updateTime
   *                              Allow dragging an item to an other moment in time
   *                           {Boolean} editable.updateGroup
   *                              Allow dragging an item to an other group
   *                           {Boolean} editable.add
   *                              Allow creating new items on double tap
   *                           {Boolean} editable.remove
   *                              Allow removing items by clicking the delete button
   *                              top right of a selected item.
   *                           {Function(item: Item, callback: Function)} onAdd
   *                              Callback function triggered when an item is about to be added:
   *                              when the user double taps an empty space in the Timeline.
   *                           {Function(item: Item, callback: Function)} onUpdate
   *                              Callback function fired when an item is about to be updated.
   *                              This function typically has to show a dialog where the user
   *                              change the item. If not implemented, nothing happens.
   *                           {Function(item: Item, callback: Function)} onMove
   *                              Fired when an item has been moved. If not implemented,
   *                              the move action will be accepted.
   *                           {Function(item: Item, callback: Function)} onRemove
   *                              Fired when an item is about to be deleted.
   *                              If not implemented, the item will be always removed.
   */
  ItemSet.prototype.setOptions = function (options) {
    if (options) {
      // copy all options that we know
      var fields = ['type', 'align', 'order', 'stack', 'selectable', 'multiselect', 'itemsAlwaysDraggable', 'multiselectPerGroup', 'groupOrder', 'dataAttributes', 'template', 'groupTemplate', 'hide', 'snap', 'groupOrderSwap'];
      util.selectiveExtend(fields, this.options, options);

      if ('orientation' in options) {
        if (typeof options.orientation === 'string') {
          this.options.orientation.item = options.orientation === 'top' ? 'top' : 'bottom';
        } else if (typeof options.orientation === 'object' && 'item' in options.orientation) {
          this.options.orientation.item = options.orientation.item;
        }
      }

      if ('margin' in options) {
        if (typeof options.margin === 'number') {
          this.options.margin.axis = options.margin;
          this.options.margin.item.horizontal = options.margin;
          this.options.margin.item.vertical = options.margin;
        } else if (typeof options.margin === 'object') {
          util.selectiveExtend(['axis'], this.options.margin, options.margin);
          if ('item' in options.margin) {
            if (typeof options.margin.item === 'number') {
              this.options.margin.item.horizontal = options.margin.item;
              this.options.margin.item.vertical = options.margin.item;
            } else if (typeof options.margin.item === 'object') {
              util.selectiveExtend(['horizontal', 'vertical'], this.options.margin.item, options.margin.item);
            }
          }
        }
      }

      if ('editable' in options) {
        if (typeof options.editable === 'boolean') {
          this.options.editable.updateTime = options.editable;
          this.options.editable.updateGroup = options.editable;
          this.options.editable.add = options.editable;
          this.options.editable.remove = options.editable;
        } else if (typeof options.editable === 'object') {
          util.selectiveExtend(['updateTime', 'updateGroup', 'add', 'remove'], this.options.editable, options.editable);
        }
      }

      if ('groupEditable' in options) {
        if (typeof options.groupEditable === 'boolean') {
          this.options.groupEditable.order = options.groupEditable;
          this.options.groupEditable.add = options.groupEditable;
          this.options.groupEditable.remove = options.groupEditable;
        } else if (typeof options.groupEditable === 'object') {
          util.selectiveExtend(['order', 'add', 'remove'], this.options.groupEditable, options.groupEditable);
        }
      }

      // callback functions
      var addCallback = (function (name) {
        var fn = options[name];
        if (fn) {
          if (!(fn instanceof Function)) {
            throw new Error('option ' + name + ' must be a function ' + name + '(item, callback)');
          }
          this.options[name] = fn;
        }
      }).bind(this);
      ['onAdd', 'onUpdate', 'onRemove', 'onMove', 'onMoving', 'onAddGroup', 'onMoveGroup', 'onRemoveGroup'].forEach(addCallback);

      // force the itemSet to refresh: options like orientation and margins may be changed
      this.markDirty();
    }
  };

  /**
   * Mark the ItemSet dirty so it will refresh everything with next redraw.
   * Optionally, all items can be marked as dirty and be refreshed.
   * @param {{refreshItems: boolean}} [options]
   */
  ItemSet.prototype.markDirty = function (options) {
    this.groupIds = [];
    this.stackDirty = true;

    if (options && options.refreshItems) {
      util.forEach(this.items, function (item) {
        item.dirty = true;
        if (item.displayed) item.redraw();
      });
    }
  };

  /**
   * Destroy the ItemSet
   */
  ItemSet.prototype.destroy = function () {
    this.hide();
    this.setItems(null);
    this.setGroups(null);

    this.hammer = null;

    this.body = null;
    this.conversion = null;
  };

  /**
   * Hide the component from the DOM
   */
  ItemSet.prototype.hide = function () {
    // remove the frame containing the items
    if (this.dom.frame.parentNode) {
      this.dom.frame.parentNode.removeChild(this.dom.frame);
    }

    // remove the axis with dots
    if (this.dom.axis.parentNode) {
      this.dom.axis.parentNode.removeChild(this.dom.axis);
    }

    // remove the labelset containing all group labels
    if (this.dom.labelSet.parentNode) {
      this.dom.labelSet.parentNode.removeChild(this.dom.labelSet);
    }
  };

  /**
   * Show the component in the DOM (when not already visible).
   * @return {Boolean} changed
   */
  ItemSet.prototype.show = function () {
    // show frame containing the items
    if (!this.dom.frame.parentNode) {
      this.body.dom.center.appendChild(this.dom.frame);
    }

    // show axis with dots
    if (!this.dom.axis.parentNode) {
      this.body.dom.backgroundVertical.appendChild(this.dom.axis);
    }

    // show labelset containing labels
    if (!this.dom.labelSet.parentNode) {
      this.body.dom.left.appendChild(this.dom.labelSet);
    }
  };

  /**
   * Set selected items by their id. Replaces the current selection
   * Unknown id's are silently ignored.
   * @param {string[] | string} [ids] An array with zero or more id's of the items to be
   *                                  selected, or a single item id. If ids is undefined
   *                                  or an empty array, all items will be unselected.
   */
  ItemSet.prototype.setSelection = function (ids) {
    var i, ii, id, item;

    if (ids == undefined) ids = [];
    if (!Array.isArray(ids)) ids = [ids];

    // unselect currently selected items
    for (i = 0, ii = this.selection.length; i < ii; i++) {
      id = this.selection[i];
      item = this.items[id];
      if (item) item.unselect();
    }

    // select items
    this.selection = [];
    for (i = 0, ii = ids.length; i < ii; i++) {
      id = ids[i];
      item = this.items[id];
      if (item) {
        this.selection.push(id);
        item.select();
      }
    }
  };

  /**
   * Get the selected items by their id
   * @return {Array} ids  The ids of the selected items
   */
  ItemSet.prototype.getSelection = function () {
    return this.selection.concat([]);
  };

  /**
   * Get the id's of the currently visible items.
   * @returns {Array} The ids of the visible items
   */
  ItemSet.prototype.getVisibleItems = function () {
    var range = this.body.range.getRange();
    var left = this.body.util.toScreen(range.start);
    var right = this.body.util.toScreen(range.end);

    var ids = [];
    for (var groupId in this.groups) {
      if (this.groups.hasOwnProperty(groupId)) {
        var group = this.groups[groupId];
        var rawVisibleItems = group.visibleItems;

        // filter the "raw" set with visibleItems into a set which is really
        // visible by pixels
        for (var i = 0; i < rawVisibleItems.length; i++) {
          var item = rawVisibleItems[i];
          // TODO: also check whether visible vertically
          if (item.left < right && item.left + item.width > left) {
            ids.push(item.id);
          }
        }
      }
    }

    return ids;
  };

  /**
   * Deselect a selected item
   * @param {String | Number} id
   * @private
   */
  ItemSet.prototype._deselect = function (id) {
    var selection = this.selection;
    for (var i = 0, ii = selection.length; i < ii; i++) {
      if (selection[i] == id) {
        // non-strict comparison!
        selection.splice(i, 1);
        break;
      }
    }
  };

  /**
   * Repaint the component
   * @return {boolean} Returns true if the component is resized
   */
  ItemSet.prototype.redraw = function () {
    var margin = this.options.margin,
        range = this.body.range,
        asSize = util.option.asSize,
        options = this.options,
        orientation = options.orientation.item,
        resized = false,
        frame = this.dom.frame;

    // recalculate absolute position (before redrawing groups)
    this.props.top = this.body.domProps.top.height + this.body.domProps.border.top;
    this.props.left = this.body.domProps.left.width + this.body.domProps.border.left;

    // update class name
    frame.className = 'vis-itemset';

    // reorder the groups (if needed)
    resized = this._orderGroups() || resized;

    // check whether zoomed (in that case we need to re-stack everything)
    // TODO: would be nicer to get this as a trigger from Range
    var visibleInterval = range.end - range.start;
    var zoomed = visibleInterval != this.lastVisibleInterval || this.props.width != this.props.lastWidth;
    if (zoomed) this.stackDirty = true;
    this.lastVisibleInterval = visibleInterval;
    this.props.lastWidth = this.props.width;

    var restack = this.stackDirty;
    var firstGroup = this._firstGroup();
    var firstMargin = {
      item: margin.item,
      axis: margin.axis
    };
    var nonFirstMargin = {
      item: margin.item,
      axis: margin.item.vertical / 2
    };
    var height = 0;
    var minHeight = margin.axis + margin.item.vertical;

    // redraw the background group
    this.groups[BACKGROUND].redraw(range, nonFirstMargin, restack);

    // redraw all regular groups
    util.forEach(this.groups, function (group) {
      var groupMargin = group == firstGroup ? firstMargin : nonFirstMargin;
      var groupResized = group.redraw(range, groupMargin, restack);
      resized = groupResized || resized;
      height += group.height;
    });
    height = Math.max(height, minHeight);
    this.stackDirty = false;

    // update frame height
    frame.style.height = asSize(height);

    // calculate actual size
    this.props.width = frame.offsetWidth;
    this.props.height = height;

    // reposition axis
    this.dom.axis.style.top = asSize(orientation == 'top' ? this.body.domProps.top.height + this.body.domProps.border.top : this.body.domProps.top.height + this.body.domProps.centerContainer.height);
    this.dom.axis.style.left = '0';

    // check if this component is resized
    resized = this._isResized() || resized;

    return resized;
  };

  /**
   * Get the first group, aligned with the axis
   * @return {Group | null} firstGroup
   * @private
   */
  ItemSet.prototype._firstGroup = function () {
    var firstGroupIndex = this.options.orientation.item == 'top' ? 0 : this.groupIds.length - 1;
    var firstGroupId = this.groupIds[firstGroupIndex];
    var firstGroup = this.groups[firstGroupId] || this.groups[UNGROUPED];

    return firstGroup || null;
  };

  /**
   * Create or delete the group holding all ungrouped items. This group is used when
   * there are no groups specified.
   * @protected
   */
  ItemSet.prototype._updateUngrouped = function () {
    var ungrouped = this.groups[UNGROUPED];
    var background = this.groups[BACKGROUND];
    var item, itemId;

    if (this.groupsData) {
      // remove the group holding all ungrouped items
      if (ungrouped) {
        ungrouped.hide();
        delete this.groups[UNGROUPED];

        for (itemId in this.items) {
          if (this.items.hasOwnProperty(itemId)) {
            item = this.items[itemId];
            item.parent && item.parent.remove(item);
            var groupId = this._getGroupId(item.data);
            var group = this.groups[groupId];
            group && group.add(item) || item.hide();
          }
        }
      }
    } else {
      // create a group holding all (unfiltered) items
      if (!ungrouped) {
        var id = null;
        var data = null;
        ungrouped = new Group(id, data, this);
        this.groups[UNGROUPED] = ungrouped;

        for (itemId in this.items) {
          if (this.items.hasOwnProperty(itemId)) {
            item = this.items[itemId];
            ungrouped.add(item);
          }
        }

        ungrouped.show();
      }
    }
  };

  /**
   * Get the element for the labelset
   * @return {HTMLElement} labelSet
   */
  ItemSet.prototype.getLabelSet = function () {
    return this.dom.labelSet;
  };

  /**
   * Set items
   * @param {vis.DataSet | null} items
   */
  ItemSet.prototype.setItems = function (items) {
    var me = this,
        ids,
        oldItemsData = this.itemsData;

    // replace the dataset
    if (!items) {
      this.itemsData = null;
    } else if (items instanceof DataSet || items instanceof DataView) {
      this.itemsData = items;
    } else {
      throw new TypeError('Data must be an instance of DataSet or DataView');
    }

    if (oldItemsData) {
      // unsubscribe from old dataset
      util.forEach(this.itemListeners, function (callback, event) {
        oldItemsData.off(event, callback);
      });

      // remove all drawn items
      ids = oldItemsData.getIds();
      this._onRemove(ids);
    }

    if (this.itemsData) {
      // subscribe to new dataset
      var id = this.id;
      util.forEach(this.itemListeners, function (callback, event) {
        me.itemsData.on(event, callback, id);
      });

      // add all new items
      ids = this.itemsData.getIds();
      this._onAdd(ids);

      // update the group holding all ungrouped items
      this._updateUngrouped();
    }

    this.body.emitter.emit('_change', { queue: true });
  };

  /**
   * Get the current items
   * @returns {vis.DataSet | null}
   */
  ItemSet.prototype.getItems = function () {
    return this.itemsData;
  };

  /**
   * Set groups
   * @param {vis.DataSet} groups
   */
  ItemSet.prototype.setGroups = function (groups) {
    var me = this,
        ids;

    // unsubscribe from current dataset
    if (this.groupsData) {
      util.forEach(this.groupListeners, function (callback, event) {
        me.groupsData.off(event, callback);
      });

      // remove all drawn groups
      ids = this.groupsData.getIds();
      this.groupsData = null;
      this._onRemoveGroups(ids); // note: this will cause a redraw
    }

    // replace the dataset
    if (!groups) {
      this.groupsData = null;
    } else if (groups instanceof DataSet || groups instanceof DataView) {
      this.groupsData = groups;
    } else {
      throw new TypeError('Data must be an instance of DataSet or DataView');
    }

    if (this.groupsData) {
      // subscribe to new dataset
      var id = this.id;
      util.forEach(this.groupListeners, function (callback, event) {
        me.groupsData.on(event, callback, id);
      });

      // draw all ms
      ids = this.groupsData.getIds();
      this._onAddGroups(ids);
    }

    // update the group holding all ungrouped items
    this._updateUngrouped();

    // update the order of all items in each group
    this._order();

    this.body.emitter.emit('_change', { queue: true });
  };

  /**
   * Get the current groups
   * @returns {vis.DataSet | null} groups
   */
  ItemSet.prototype.getGroups = function () {
    return this.groupsData;
  };

  /**
   * Remove an item by its id
   * @param {String | Number} id
   */
  ItemSet.prototype.removeItem = function (id) {
    var item = this.itemsData.get(id),
        dataset = this.itemsData.getDataSet();

    if (item) {
      // confirm deletion
      this.options.onRemove(item, function (item) {
        if (item) {
          // remove by id here, it is possible that an item has no id defined
          // itself, so better not delete by the item itself
          dataset.remove(id);
        }
      });
    }
  };

  /**
   * Get the time of an item based on it's data and options.type
   * @param {Object} itemData
   * @returns {string} Returns the type
   * @private
   */
  ItemSet.prototype._getType = function (itemData) {
    return itemData.type || this.options.type || (itemData.end ? 'range' : 'box');
  };

  /**
   * Get the group id for an item
   * @param {Object} itemData
   * @returns {string} Returns the groupId
   * @private
   */
  ItemSet.prototype._getGroupId = function (itemData) {
    var type = this._getType(itemData);
    if (type == 'background' && itemData.group == undefined) {
      return BACKGROUND;
    } else {
      return this.groupsData ? itemData.group : UNGROUPED;
    }
  };

  /**
   * Handle updated items
   * @param {Number[]} ids
   * @protected
   */
  ItemSet.prototype._onUpdate = function (ids) {
    var me = this;

    ids.forEach((function (id) {
      var itemData = me.itemsData.get(id, me.itemOptions);
      var item = me.items[id];
      var type = me._getType(itemData);

      var constructor = ItemSet.types[type];
      var selected;

      if (item) {
        // update item
        if (!constructor || !(item instanceof constructor)) {
          // item type has changed, delete the item and recreate it
          selected = item.selected; // preserve selection of this item
          me._removeItem(item);
          item = null;
        } else {
          me._updateItem(item, itemData);
        }
      }

      if (!item) {
        // create item
        if (constructor) {
          item = new constructor(itemData, me.conversion, me.options);
          item.id = id; // TODO: not so nice setting id afterwards
          me._addItem(item);
          if (selected) {
            this.selection.push(id);
            item.select();
          }
        } else if (type == 'rangeoverflow') {
          // TODO: deprecated since version 2.1.0 (or 3.0.0?). cleanup some day
          throw new TypeError('Item type "rangeoverflow" is deprecated. Use css styling instead: ' + '.vis-item.vis-range .vis-item-content {overflow: visible;}');
        } else {
          throw new TypeError('Unknown item type "' + type + '"');
        }
      }
    }).bind(this));

    this._order();
    this.stackDirty = true; // force re-stacking of all items next redraw
    this.body.emitter.emit('_change', { queue: true });
  };

  /**
   * Handle added items
   * @param {Number[]} ids
   * @protected
   */
  ItemSet.prototype._onAdd = ItemSet.prototype._onUpdate;

  /**
   * Handle removed items
   * @param {Number[]} ids
   * @protected
   */
  ItemSet.prototype._onRemove = function (ids) {
    var count = 0;
    var me = this;
    ids.forEach(function (id) {
      var item = me.items[id];
      if (item) {
        count++;
        me._removeItem(item);
      }
    });

    if (count) {
      // update order
      this._order();
      this.stackDirty = true; // force re-stacking of all items next redraw
      this.body.emitter.emit('_change', { queue: true });
    }
  };

  /**
   * Update the order of item in all groups
   * @private
   */
  ItemSet.prototype._order = function () {
    // reorder the items in all groups
    // TODO: optimization: only reorder groups affected by the changed items
    util.forEach(this.groups, function (group) {
      group.order();
    });
  };

  /**
   * Handle updated groups
   * @param {Number[]} ids
   * @private
   */
  ItemSet.prototype._onUpdateGroups = function (ids) {
    this._onAddGroups(ids);
  };

  /**
   * Handle changed groups (added or updated)
   * @param {Number[]} ids
   * @private
   */
  ItemSet.prototype._onAddGroups = function (ids) {
    var me = this;

    ids.forEach(function (id) {
      var groupData = me.groupsData.get(id);
      var group = me.groups[id];

      if (!group) {
        // check for reserved ids
        if (id == UNGROUPED || id == BACKGROUND) {
          throw new Error('Illegal group id. ' + id + ' is a reserved id.');
        }

        var groupOptions = Object.create(me.options);
        util.extend(groupOptions, {
          height: null
        });

        group = new Group(id, groupData, me);
        me.groups[id] = group;

        // add items with this groupId to the new group
        for (var itemId in me.items) {
          if (me.items.hasOwnProperty(itemId)) {
            var item = me.items[itemId];
            if (item.data.group == id) {
              group.add(item);
            }
          }
        }

        group.order();
        group.show();
      } else {
        // update group
        group.setData(groupData);
      }
    });

    this.body.emitter.emit('_change', { queue: true });
  };

  /**
   * Handle removed groups
   * @param {Number[]} ids
   * @private
   */
  ItemSet.prototype._onRemoveGroups = function (ids) {
    var groups = this.groups;
    ids.forEach(function (id) {
      var group = groups[id];

      if (group) {
        group.hide();
        delete groups[id];
      }
    });

    this.markDirty();

    this.body.emitter.emit('_change', { queue: true });
  };

  /**
   * Reorder the groups if needed
   * @return {boolean} changed
   * @private
   */
  ItemSet.prototype._orderGroups = function () {
    if (this.groupsData) {
      // reorder the groups
      var groupIds = this.groupsData.getIds({
        order: this.options.groupOrder
      });

      var changed = !util.equalArray(groupIds, this.groupIds);
      if (changed) {
        // hide all groups, removes them from the DOM
        var groups = this.groups;
        groupIds.forEach(function (groupId) {
          groups[groupId].hide();
        });

        // show the groups again, attach them to the DOM in correct order
        groupIds.forEach(function (groupId) {
          groups[groupId].show();
        });

        this.groupIds = groupIds;
      }

      return changed;
    } else {
      return false;
    }
  };

  /**
   * Add a new item
   * @param {Item} item
   * @private
   */
  ItemSet.prototype._addItem = function (item) {
    this.items[item.id] = item;

    // add to group
    var groupId = this._getGroupId(item.data);
    var group = this.groups[groupId];
    if (group) group.add(item);
  };

  /**
   * Update an existing item
   * @param {Item} item
   * @param {Object} itemData
   * @private
   */
  ItemSet.prototype._updateItem = function (item, itemData) {
    var oldGroupId = item.data.group;
    var oldSubGroupId = item.data.subgroup;

    // update the items data (will redraw the item when displayed)
    item.setData(itemData);

    // update group
    if (oldGroupId != item.data.group || oldSubGroupId != item.data.subgroup) {
      var oldGroup = this.groups[oldGroupId];
      if (oldGroup) oldGroup.remove(item);

      var groupId = this._getGroupId(item.data);
      var group = this.groups[groupId];
      if (group) group.add(item);
    }
  };

  /**
   * Delete an item from the ItemSet: remove it from the DOM, from the map
   * with items, and from the map with visible items, and from the selection
   * @param {Item} item
   * @private
   */
  ItemSet.prototype._removeItem = function (item) {
    // remove from DOM
    item.hide();

    // remove from items
    delete this.items[item.id];

    // remove from selection
    var index = this.selection.indexOf(item.id);
    if (index != -1) this.selection.splice(index, 1);

    // remove from group
    item.parent && item.parent.remove(item);
  };

  /**
   * Create an array containing all items being a range (having an end date)
   * @param array
   * @returns {Array}
   * @private
   */
  ItemSet.prototype._constructByEndArray = function (array) {
    var endArray = [];

    for (var i = 0; i < array.length; i++) {
      if (array[i] instanceof RangeItem) {
        endArray.push(array[i]);
      }
    }
    return endArray;
  };

  /**
   * Register the clicked item on touch, before dragStart is initiated.
   *
   * dragStart is initiated from a mousemove event, AFTER the mouse/touch is
   * already moving. Therefore, the mouse/touch can sometimes be above an other
   * DOM element than the item itself.
   *
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onTouch = function (event) {
    // store the touched item, used in _onDragStart
    this.touchParams.item = this.itemFromTarget(event);
    this.touchParams.dragLeftItem = event.target.dragLeftItem || false;
    this.touchParams.dragRightItem = event.target.dragRightItem || false;
    this.touchParams.itemProps = null;
  };

  /**
   * Given an group id, returns the index it has.
   *
   * @param {Number} groupID
   * @private
   */
  ItemSet.prototype._getGroupIndex = function (groupId) {
    for (var i = 0; i < this.groupIds.length; i++) {
      if (groupId == this.groupIds[i]) return i;
    }
  };

  /**
   * Start dragging the selected events
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onDragStart = function (event) {
    var item = this.touchParams.item || null;
    var me = this;
    var props;

    if (item && (item.selected || this.options.itemsAlwaysDraggable)) {

      if (!this.options.editable.updateTime && !this.options.editable.updateGroup && !item.editable) {
        return;
      }

      // override options.editable
      if (item.editable === false) {
        return;
      }

      var dragLeftItem = this.touchParams.dragLeftItem;
      var dragRightItem = this.touchParams.dragRightItem;

      if (dragLeftItem) {
        props = {
          item: dragLeftItem,
          initialX: event.center.x,
          dragLeft: true,
          data: this._cloneItemData(item.data)
        };

        this.touchParams.itemProps = [props];
      } else if (dragRightItem) {
        props = {
          item: dragRightItem,
          initialX: event.center.x,
          dragRight: true,
          data: this._cloneItemData(item.data)
        };

        this.touchParams.itemProps = [props];
      } else {
        this.touchParams.selectedItem = item;

        var baseGroupIndex = this._getGroupIndex(item.data.group);

        var itemsToDrag = this.options.itemsAlwaysDraggable && !item.selected ? [item.id] : this.getSelection();

        this.touchParams.itemProps = itemsToDrag.map((function (id) {
          var item = me.items[id];
          var groupIndex = me._getGroupIndex(item.data.group);
          return {
            item: item,
            initialX: event.center.x,
            groupOffset: baseGroupIndex - groupIndex,
            data: this._cloneItemData(item.data)
          };
        }).bind(this));
      }

      event.stopPropagation();
    } else if (this.options.editable.add && (event.srcEvent.ctrlKey || event.srcEvent.metaKey)) {
      // create a new range item when dragging with ctrl key down
      this._onDragStartAddItem(event);
    }
  };

  /**
   * Start creating a new range item by dragging.
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onDragStartAddItem = function (event) {
    var snap = this.options.snap || null;
    var xAbs = util.getAbsoluteLeft(this.dom.frame);
    var x = event.center.x - xAbs - 10; // minus 10 to compensate for the drag starting as soon as you've moved 10px
    var time = this.body.util.toTime(x);
    var scale = this.body.util.getScale();
    var step = this.body.util.getStep();
    var start = snap ? snap(time, scale, step) : time;
    var end = start;

    var itemData = {
      type: 'range',
      start: start,
      end: end,
      content: 'new item'
    };

    var id = util.randomUUID();
    itemData[this.itemsData._fieldId] = id;

    var group = this.groupFromTarget(event);
    if (group) {
      itemData.group = group.groupId;
    }

    var newItem = new RangeItem(itemData, this.conversion, this.options);
    newItem.id = id; // TODO: not so nice setting id afterwards
    newItem.data = this._cloneItemData(itemData);
    this._addItem(newItem);

    var props = {
      item: newItem,
      dragRight: true,
      initialX: event.center.x,
      data: newItem.data
    };
    this.touchParams.itemProps = [props];

    event.stopPropagation();
  };

  /**
   * Drag selected items
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onDrag = function (event) {
    if (this.touchParams.itemProps) {
      event.stopPropagation();

      var me = this;
      var snap = this.options.snap || null;
      var xOffset = this.body.dom.root.offsetLeft + this.body.domProps.left.width;
      var scale = this.body.util.getScale();
      var step = this.body.util.getStep();

      //only calculate the new group for the item that's actually dragged
      var selectedItem = this.touchParams.selectedItem;
      var updateGroupAllowed = me.options.editable.updateGroup;
      var newGroupBase = null;
      if (updateGroupAllowed && selectedItem) {
        if (selectedItem.data.group != undefined) {
          // drag from one group to another
          var group = me.groupFromTarget(event);
          if (group) {
            //we know the offset for all items, so the new group for all items
            //will be relative to this one.
            newGroupBase = this._getGroupIndex(group.groupId);
          }
        }
      }

      // move
      this.touchParams.itemProps.forEach((function (props) {
        var current = me.body.util.toTime(event.center.x - xOffset);
        var initial = me.body.util.toTime(props.initialX - xOffset);
        var offset = current - initial; // ms

        var itemData = this._cloneItemData(props.item.data); // clone the data
        if (props.item.editable === false) {
          return;
        }

        var updateTimeAllowed = me.options.editable.updateTime || props.item.editable === true;

        if (updateTimeAllowed) {
          if (props.dragLeft) {
            // drag left side of a range item
            if (itemData.start != undefined) {
              var initialStart = util.convert(props.data.start, 'Date');
              var start = new Date(initialStart.valueOf() + offset);
              // TODO: pass a Moment instead of a Date to snap(). (Breaking change)
              itemData.start = snap ? snap(start, scale, step) : start;
            }
          } else if (props.dragRight) {
            // drag right side of a range item
            if (itemData.end != undefined) {
              var initialEnd = util.convert(props.data.end, 'Date');
              var end = new Date(initialEnd.valueOf() + offset);
              // TODO: pass a Moment instead of a Date to snap(). (Breaking change)
              itemData.end = snap ? snap(end, scale, step) : end;
            }
          } else {
            // drag both start and end
            if (itemData.start != undefined) {
              var initialStart = util.convert(props.data.start, 'Date').valueOf();
              var start = new Date(initialStart + offset);

              if (itemData.end != undefined) {
                var initialEnd = util.convert(props.data.end, 'Date');
                var duration = initialEnd.valueOf() - initialStart.valueOf();

                // TODO: pass a Moment instead of a Date to snap(). (Breaking change)
                itemData.start = snap ? snap(start, scale, step) : start;
                itemData.end = new Date(itemData.start.valueOf() + duration);
              } else {
                // TODO: pass a Moment instead of a Date to snap(). (Breaking change)
                itemData.start = snap ? snap(start, scale, step) : start;
              }
            }
          }
        }

        var updateGroupAllowed = me.options.editable.updateGroup || props.item.editable === true;

        if (updateGroupAllowed && !props.dragLeft && !props.dragRight && newGroupBase != null) {
          if (itemData.group != undefined) {
            var newOffset = newGroupBase - props.groupOffset;

            //make sure we stay in bounds
            newOffset = Math.max(0, newOffset);
            newOffset = Math.min(me.groupIds.length - 1, newOffset);

            itemData.group = me.groupIds[newOffset];
          }
        }

        // confirm moving the item
        itemData = this._cloneItemData(itemData); // convert start and end to the correct type
        me.options.onMoving(itemData, (function (itemData) {
          if (itemData) {
            props.item.setData(this._cloneItemData(itemData, 'Date'));
          }
        }).bind(this));
      }).bind(this));

      this.stackDirty = true; // force re-stacking of all items next redraw
      this.body.emitter.emit('_change');
    }
  };

  /**
   * Move an item to another group
   * @param {Item} item
   * @param {String | Number} groupId
   * @private
   */
  ItemSet.prototype._moveToGroup = function (item, groupId) {
    var group = this.groups[groupId];
    if (group && group.groupId != item.data.group) {
      var oldGroup = item.parent;
      oldGroup.remove(item);
      oldGroup.order();
      group.add(item);
      group.order();

      item.data.group = group.groupId;
    }
  };

  /**
   * End of dragging selected items
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onDragEnd = function (event) {
    if (this.touchParams.itemProps) {
      event.stopPropagation();

      var me = this;
      var dataset = this.itemsData.getDataSet();
      var itemProps = this.touchParams.itemProps;
      this.touchParams.itemProps = null;

      itemProps.forEach((function (props) {
        var id = props.item.id;
        var exists = me.itemsData.get(id, me.itemOptions) != null;

        if (!exists) {
          // add a new item
          me.options.onAdd(props.item.data, function (itemData) {
            me._removeItem(props.item); // remove temporary item
            if (itemData) {
              me.itemsData.getDataSet().add(itemData);
            }

            // force re-stacking of all items next redraw
            me.stackDirty = true;
            me.body.emitter.emit('_change');
          });
        } else {
          // update existing item
          var itemData = this._cloneItemData(props.item.data); // convert start and end to the correct type
          me.options.onMove(itemData, function (itemData) {
            if (itemData) {
              // apply changes
              itemData[dataset._fieldId] = id; // ensure the item contains its id (can be undefined)
              dataset.update(itemData);
            } else {
              // restore original values
              props.item.setData(props.data);

              me.stackDirty = true; // force re-stacking of all items next redraw
              me.body.emitter.emit('_change');
            }
          });
        }
      }).bind(this));
    }
  };

  ItemSet.prototype._onGroupDragStart = function (event) {
    if (this.options.groupEditable.order) {
      this.groupTouchParams.group = this.groupFromTarget(event);

      if (this.groupTouchParams.group) {
        event.stopPropagation();

        this.groupTouchParams.originalOrder = this.groupsData.getIds({
          order: this.options.groupOrder
        });
      }
    }
  };

  ItemSet.prototype._onGroupDrag = function (event) {
    if (this.options.groupEditable.order && this.groupTouchParams.group) {
      event.stopPropagation();

      // drag from one group to another
      var group = this.groupFromTarget(event);

      // try to avoid toggling when groups differ in height
      if (group && group.height != this.groupTouchParams.group.height) {
        var movingUp = group.top < this.groupTouchParams.group.top;
        var clientY = event.center ? event.center.y : event.clientY;
        var targetGroupTop = util.getAbsoluteTop(group.dom.foreground);
        var draggedGroupHeight = this.groupTouchParams.group.height;
        if (movingUp) {
          // skip swapping the groups when the dragged group is not below clientY afterwards
          if (targetGroupTop + draggedGroupHeight < clientY) {
            return;
          }
        } else {
          var targetGroupHeight = group.height;
          // skip swapping the groups when the dragged group is not below clientY afterwards
          if (targetGroupTop + targetGroupHeight - draggedGroupHeight > clientY) {
            return;
          }
        }
      }

      if (group && group != this.groupTouchParams.group) {
        var groupsData = this.groupsData;
        var targetGroup = groupsData.get(group.groupId);
        var draggedGroup = groupsData.get(this.groupTouchParams.group.groupId);

        // switch groups
        if (draggedGroup && targetGroup) {
          this.options.groupOrderSwap(draggedGroup, targetGroup, this.groupsData);
          this.groupsData.update(draggedGroup);
          this.groupsData.update(targetGroup);
        }

        // fetch current order of groups
        var newOrder = this.groupsData.getIds({
          order: this.options.groupOrder
        });

        // in case of changes since _onGroupDragStart
        if (!util.equalArray(newOrder, this.groupTouchParams.originalOrder)) {
          var groupsData = this.groupsData;
          var origOrder = this.groupTouchParams.originalOrder;
          var draggedId = this.groupTouchParams.group.groupId;
          var numGroups = Math.min(origOrder.length, newOrder.length);
          var curPos = 0;
          var newOffset = 0;
          var orgOffset = 0;
          while (curPos < numGroups) {
            // as long as the groups are where they should be step down along the groups order
            while (curPos + newOffset < numGroups && curPos + orgOffset < numGroups && newOrder[curPos + newOffset] == origOrder[curPos + orgOffset]) {
              curPos++;
            }

            // all ok
            if (curPos + newOffset >= numGroups) {
              break;
            }

            // not all ok
            // if dragged group was move upwards everything below should have an offset
            if (newOrder[curPos + newOffset] == draggedId) {
              newOffset = 1;
              continue;
            }
            // if dragged group was move downwards everything above should have an offset
            else if (origOrder[curPos + orgOffset] == draggedId) {
                orgOffset = 1;
                continue;
              }
              // found a group (apart from dragged group) that has the wrong position -> switch with the
              // group at the position where other one should be, fix index arrays and continue
              else {
                  var slippedPosition = newOrder.indexOf(origOrder[curPos + orgOffset]);
                  var switchGroup = groupsData.get(newOrder[curPos + newOffset]);
                  var shouldBeGroup = groupsData.get(origOrder[curPos + orgOffset]);
                  this.options.groupOrderSwap(switchGroup, shouldBeGroup, groupsData);
                  groupsData.update(switchGroup);
                  groupsData.update(shouldBeGroup);

                  var switchGroupId = newOrder[curPos + newOffset];
                  newOrder[curPos + newOffset] = origOrder[curPos + orgOffset];
                  newOrder[slippedPosition] = switchGroupId;

                  curPos++;
                }
          }
        }
      }
    }
  };

  ItemSet.prototype._onGroupDragEnd = function (event) {
    if (this.options.groupEditable.order && this.groupTouchParams.group) {
      event.stopPropagation();

      // update existing group
      var me = this;
      var id = me.groupTouchParams.group.groupId;
      var dataset = me.groupsData.getDataSet();
      var groupData = util.extend({}, dataset.get(id)); // clone the data
      me.options.onMoveGroup(groupData, function (groupData) {
        if (groupData) {
          // apply changes
          groupData[dataset._fieldId] = id; // ensure the group contains its id (can be undefined)
          dataset.update(groupData);
        } else {

          // fetch current order of groups
          var newOrder = dataset.getIds({
            order: me.options.groupOrder
          });

          // restore original order
          if (!util.equalArray(newOrder, me.groupTouchParams.originalOrder)) {
            var origOrder = me.groupTouchParams.originalOrder;
            var numGroups = Math.min(origOrder.length, newOrder.length);
            var curPos = 0;
            while (curPos < numGroups) {
              // as long as the groups are where they should be step down along the groups order
              while (curPos < numGroups && newOrder[curPos] == origOrder[curPos]) {
                curPos++;
              }

              // all ok
              if (curPos >= numGroups) {
                break;
              }

              // found a group that has the wrong position -> switch with the
              // group at the position where other one should be, fix index arrays and continue
              var slippedPosition = newOrder.indexOf(origOrder[curPos]);
              var switchGroup = dataset.get(newOrder[curPos]);
              var shouldBeGroup = dataset.get(origOrder[curPos]);
              me.options.groupOrderSwap(switchGroup, shouldBeGroup, dataset);
              groupsData.update(switchGroup);
              groupsData.update(shouldBeGroup);

              var switchGroupId = newOrder[curPos];
              newOrder[curPos] = origOrder[curPos];
              newOrder[slippedPosition] = switchGroupId;

              curPos++;
            }
          }
        }
      });

      me.body.emitter.emit('groupDragged', { groupId: id });
    }
  };

  /**
   * Handle selecting/deselecting an item when tapping it
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onSelectItem = function (event) {
    if (!this.options.selectable) return;

    var ctrlKey = event.srcEvent && (event.srcEvent.ctrlKey || event.srcEvent.metaKey);
    var shiftKey = event.srcEvent && event.srcEvent.shiftKey;
    if (ctrlKey || shiftKey) {
      this._onMultiSelectItem(event);
      return;
    }

    var oldSelection = this.getSelection();

    var item = this.itemFromTarget(event);
    var selection = item ? [item.id] : [];
    this.setSelection(selection);

    var newSelection = this.getSelection();

    // emit a select event,
    // except when old selection is empty and new selection is still empty
    if (newSelection.length > 0 || oldSelection.length > 0) {
      this.body.emitter.emit('select', {
        items: newSelection,
        event: event
      });
    }
  };

  /**
   * Handle creation and updates of an item on double tap
   * @param event
   * @private
   */
  ItemSet.prototype._onAddItem = function (event) {
    if (!this.options.selectable) return;
    if (!this.options.editable.add) return;

    var me = this;
    var snap = this.options.snap || null;
    var item = this.itemFromTarget(event);

    if (item) {
      // update item

      // execute async handler to update the item (or cancel it)
      var itemData = me.itemsData.get(item.id); // get a clone of the data from the dataset
      this.options.onUpdate(itemData, function (itemData) {
        if (itemData) {
          me.itemsData.getDataSet().update(itemData);
        }
      });
    } else {
      // add item
      var xAbs = util.getAbsoluteLeft(this.dom.frame);
      var x = event.center.x - xAbs;
      var start = this.body.util.toTime(x);
      var scale = this.body.util.getScale();
      var step = this.body.util.getStep();

      var newItemData = {
        start: snap ? snap(start, scale, step) : start,
        content: 'new item'
      };

      // when default type is a range, add a default end date to the new item
      if (this.options.type === 'range') {
        var end = this.body.util.toTime(x + this.props.width / 5);
        newItemData.end = snap ? snap(end, scale, step) : end;
      }

      newItemData[this.itemsData._fieldId] = util.randomUUID();

      var group = this.groupFromTarget(event);
      if (group) {
        newItemData.group = group.groupId;
      }

      // execute async handler to customize (or cancel) adding an item
      newItemData = this._cloneItemData(newItemData); // convert start and end to the correct type
      this.options.onAdd(newItemData, function (item) {
        if (item) {
          me.itemsData.getDataSet().add(item);
          // TODO: need to trigger a redraw?
        }
      });
    }
  };

  /**
   * Handle selecting/deselecting multiple items when holding an item
   * @param {Event} event
   * @private
   */
  ItemSet.prototype._onMultiSelectItem = function (event) {
    if (!this.options.selectable) return;

    var item = this.itemFromTarget(event);

    if (item) {
      // multi select items (if allowed)

      var selection = this.options.multiselect ? this.getSelection() // take current selection
      : []; // deselect current selection

      var shiftKey = event.srcEvent && event.srcEvent.shiftKey || false;

      if (shiftKey && this.options.multiselect) {
        // select all items between the old selection and the tapped item
        var itemGroup = this.itemsData.get(item.id).group;

        // when filtering get the group of the last selected item
        var lastSelectedGroup = undefined;
        if (this.options.multiselectPerGroup) {
          if (selection.length > 0) {
            lastSelectedGroup = this.itemsData.get(selection[0]).group;
          }
        }

        // determine the selection range
        if (!this.options.multiselectPerGroup || lastSelectedGroup == undefined || lastSelectedGroup == itemGroup) {
          selection.push(item.id);
        }
        var range = ItemSet._getItemRange(this.itemsData.get(selection, this.itemOptions));

        if (!this.options.multiselectPerGroup || lastSelectedGroup == itemGroup) {
          // select all items within the selection range
          selection = [];
          for (var id in this.items) {
            if (this.items.hasOwnProperty(id)) {
              var _item = this.items[id];
              var start = _item.data.start;
              var end = _item.data.end !== undefined ? _item.data.end : start;

              if (start >= range.min && end <= range.max && (!this.options.multiselectPerGroup || lastSelectedGroup == this.itemsData.get(_item.id).group) && !(_item instanceof BackgroundItem)) {
                selection.push(_item.id); // do not use id but item.id, id itself is stringified
              }
            }
          }
        }
      } else {
          // add/remove this item from the current selection
          var index = selection.indexOf(item.id);
          if (index == -1) {
            // item is not yet selected -> select it
            selection.push(item.id);
          } else {
            // item is already selected -> deselect it
            selection.splice(index, 1);
          }
        }

      this.setSelection(selection);

      this.body.emitter.emit('select', {
        items: this.getSelection(),
        event: event
      });
    }
  };

  /**
   * Calculate the time range of a list of items
   * @param {Array.<Object>} itemsData
   * @return {{min: Date, max: Date}} Returns the range of the provided items
   * @private
   */
  ItemSet._getItemRange = function (itemsData) {
    var max = null;
    var min = null;

    itemsData.forEach(function (data) {
      if (min == null || data.start < min) {
        min = data.start;
      }

      if (data.end != undefined) {
        if (max == null || data.end > max) {
          max = data.end;
        }
      } else {
        if (max == null || data.start > max) {
          max = data.start;
        }
      }
    });

    return {
      min: min,
      max: max
    };
  };

  /**
   * Find an item from an event target:
   * searches for the attribute 'timeline-item' in the event target's element tree
   * @param {Event} event
   * @return {Item | null} item
   */
  ItemSet.prototype.itemFromTarget = function (event) {
    var target = event.target;
    while (target) {
      if (target.hasOwnProperty('timeline-item')) {
        return target['timeline-item'];
      }
      target = target.parentNode;
    }

    return null;
  };

  /**
   * Find the Group from an event target:
   * searches for the attribute 'timeline-group' in the event target's element tree
   * @param {Event} event
   * @return {Group | null} group
   */
  ItemSet.prototype.groupFromTarget = function (event) {
    var clientY = event.center ? event.center.y : event.clientY;
    for (var i = 0; i < this.groupIds.length; i++) {
      var groupId = this.groupIds[i];
      var group = this.groups[groupId];
      var foreground = group.dom.foreground;
      var top = util.getAbsoluteTop(foreground);
      if (clientY > top && clientY < top + foreground.offsetHeight) {
        return group;
      }

      if (this.options.orientation.item === 'top') {
        if (i === this.groupIds.length - 1 && clientY > top) {
          return group;
        }
      } else {
        if (i === 0 && clientY < top + foreground.offset) {
          return group;
        }
      }
    }

    return null;
  };

  /**
   * Find the ItemSet from an event target:
   * searches for the attribute 'timeline-itemset' in the event target's element tree
   * @param {Event} event
   * @return {ItemSet | null} item
   */
  ItemSet.itemSetFromTarget = function (event) {
    var target = event.target;
    while (target) {
      if (target.hasOwnProperty('timeline-itemset')) {
        return target['timeline-itemset'];
      }
      target = target.parentNode;
    }

    return null;
  };

  /**
   * Clone the data of an item, and "normalize" it: convert the start and end date
   * to the type (Date, Moment, ...) configured in the DataSet. If not configured,
   * start and end are converted to Date.
   * @param {Object} itemData, typically `item.data`
   * @param {string} [type]  Optional Date type. If not provided, the type from the DataSet is taken
   * @return {Object} The cloned object
   * @private
   */
  ItemSet.prototype._cloneItemData = function (itemData, type) {
    var clone = util.extend({}, itemData);

    if (!type) {
      // convert start and end date to the type (Date, Moment, ...) configured in the DataSet
      type = this.itemsData.getDataSet()._options.type;
    }

    if (clone.start != undefined) {
      clone.start = util.convert(clone.start, type && type.start || 'Date');
    }
    if (clone.end != undefined) {
      clone.end = util.convert(clone.end, type && type.end || 'Date');
    }

    return clone;
  };

  module.exports = ItemSet;

/***/ },
/* 29 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var moment = __webpack_require__(2);
  var DateUtil = __webpack_require__(26);
  var util = __webpack_require__(1);

  /**
   * @constructor  TimeStep
   * The class TimeStep is an iterator for dates. You provide a start date and an
   * end date. The class itself determines the best scale (step size) based on the
   * provided start Date, end Date, and minimumStep.
   *
   * If minimumStep is provided, the step size is chosen as close as possible
   * to the minimumStep but larger than minimumStep. If minimumStep is not
   * provided, the scale is set to 1 DAY.
   * The minimumStep should correspond with the onscreen size of about 6 characters
   *
   * Alternatively, you can set a scale by hand.
   * After creation, you can initialize the class by executing first(). Then you
   * can iterate from the start date to the end date via next(). You can check if
   * the end date is reached with the function hasNext(). After each step, you can
   * retrieve the current date via getCurrent().
   * The TimeStep has scales ranging from milliseconds, seconds, minutes, hours,
   * days, to years.
   *
   * Version: 1.2
   *
   * @param {Date} [start]         The start date, for example new Date(2010, 9, 21)
   *                               or new Date(2010, 9, 21, 23, 45, 00)
   * @param {Date} [end]           The end date
   * @param {Number} [minimumStep] Optional. Minimum step size in milliseconds
   */
  function TimeStep(start, end, minimumStep, hiddenDates) {
    this.moment = moment;

    // variables
    this.current = this.moment();
    this._start = this.moment();
    this._end = this.moment();

    this.autoScale = true;
    this.scale = 'day';
    this.step = 1;

    // initialize the range
    this.setRange(start, end, minimumStep);

    // hidden Dates options
    this.switchedDay = false;
    this.switchedMonth = false;
    this.switchedYear = false;
    if (Array.isArray(hiddenDates)) {
      this.hiddenDates = hiddenDates;
    } else if (hiddenDates != undefined) {
      this.hiddenDates = [hiddenDates];
    } else {
      this.hiddenDates = [];
    }

    this.format = TimeStep.FORMAT; // default formatting
  }

  // Time formatting
  TimeStep.FORMAT = {
    minorLabels: {
      millisecond: 'SSS',
      second: 's',
      minute: 'HH:mm',
      hour: 'HH:mm',
      weekday: 'ddd D',
      day: 'D',
      month: 'MMM',
      year: 'YYYY'
    },
    majorLabels: {
      millisecond: 'HH:mm:ss',
      second: 'D MMMM HH:mm',
      minute: 'ddd D MMMM',
      hour: 'ddd D MMMM',
      weekday: 'MMMM YYYY',
      day: 'MMMM YYYY',
      month: 'YYYY',
      year: ''
    }
  };

  /**
   * Set custom constructor function for moment. Can be used to set dates
   * to UTC or to set a utcOffset.
   * @param {function} moment
   */
  TimeStep.prototype.setMoment = function (moment) {
    this.moment = moment;

    // update the date properties, can have a new utcOffset
    this.current = this.moment(this.current);
    this._start = this.moment(this._start);
    this._end = this.moment(this._end);
  };

  /**
   * Set custom formatting for the minor an major labels of the TimeStep.
   * Both `minorLabels` and `majorLabels` are an Object with properties:
   * 'millisecond', 'second', 'minute', 'hour', 'weekday', 'day', 'month', 'year'.
   * @param {{minorLabels: Object, majorLabels: Object}} format
   */
  TimeStep.prototype.setFormat = function (format) {
    var defaultFormat = util.deepExtend({}, TimeStep.FORMAT);
    this.format = util.deepExtend(defaultFormat, format);
  };

  /**
   * Set a new range
   * If minimumStep is provided, the step size is chosen as close as possible
   * to the minimumStep but larger than minimumStep. If minimumStep is not
   * provided, the scale is set to 1 DAY.
   * The minimumStep should correspond with the onscreen size of about 6 characters
   * @param {Date} [start]      The start date and time.
   * @param {Date} [end]        The end date and time.
   * @param {int} [minimumStep] Optional. Minimum step size in milliseconds
   */
  TimeStep.prototype.setRange = function (start, end, minimumStep) {
    if (!(start instanceof Date) || !(end instanceof Date)) {
      throw "No legal start or end date in method setRange";
    }

    this._start = start != undefined ? this.moment(start.valueOf()) : new Date();
    this._end = end != undefined ? this.moment(end.valueOf()) : new Date();

    if (this.autoScale) {
      this.setMinimumStep(minimumStep);
    }
  };

  /**
   * Set the range iterator to the start date.
   */
  TimeStep.prototype.start = function () {
    this.current = this._start.clone();
    this.roundToMinor();
  };

  /**
   * Round the current date to the first minor date value
   * This must be executed once when the current date is set to start Date
   */
  TimeStep.prototype.roundToMinor = function () {
    // round to floor
    // IMPORTANT: we have no breaks in this switch! (this is no bug)
    // noinspection FallThroughInSwitchStatementJS
    switch (this.scale) {
      case 'year':
        this.current.year(this.step * Math.floor(this.current.year() / this.step));
        this.current.month(0);
      case 'month':
        this.current.date(1);
      case 'day': // intentional fall through
      case 'weekday':
        this.current.hours(0);
      case 'hour':
        this.current.minutes(0);
      case 'minute':
        this.current.seconds(0);
      case 'second':
        this.current.milliseconds(0);
      //case 'millisecond': // nothing to do for milliseconds
    }

    if (this.step != 1) {
      // round down to the first minor value that is a multiple of the current step size
      switch (this.scale) {
        case 'millisecond':
          this.current.subtract(this.current.milliseconds() % this.step, 'milliseconds');break;
        case 'second':
          this.current.subtract(this.current.seconds() % this.step, 'seconds');break;
        case 'minute':
          this.current.subtract(this.current.minutes() % this.step, 'minutes');break;
        case 'hour':
          this.current.subtract(this.current.hours() % this.step, 'hours');break;
        case 'weekday': // intentional fall through
        case 'day':
          this.current.subtract((this.current.date() - 1) % this.step, 'day');break;
        case 'month':
          this.current.subtract(this.current.month() % this.step, 'month');break;
        case 'year':
          this.current.subtract(this.current.year() % this.step, 'year');break;
        default:
          break;
      }
    }
  };

  /**
   * Check if the there is a next step
   * @return {boolean}  true if the current date has not passed the end date
   */
  TimeStep.prototype.hasNext = function () {
    return this.current.valueOf() <= this._end.valueOf();
  };

  /**
   * Do the next step
   */
  TimeStep.prototype.next = function () {
    var prev = this.current.valueOf();

    // Two cases, needed to prevent issues with switching daylight savings
    // (end of March and end of October)
    if (this.current.month() < 6) {
      switch (this.scale) {
        case 'millisecond':
          this.current.add(this.step, 'millisecond');break;
        case 'second':
          this.current.add(this.step, 'second');break;
        case 'minute':
          this.current.add(this.step, 'minute');break;
        case 'hour':
          this.current.add(this.step, 'hour');
          // in case of skipping an hour for daylight savings, adjust the hour again (else you get: 0h 5h 9h ... instead of 0h 4h 8h ...)
          // TODO: is this still needed now we use the function of moment.js?
          this.current.subtract(this.current.hours() % this.step, 'hour');
          break;
        case 'weekday': // intentional fall through
        case 'day':
          this.current.add(this.step, 'day');break;
        case 'month':
          this.current.add(this.step, 'month');break;
        case 'year':
          this.current.add(this.step, 'year');break;
        default:
          break;
      }
    } else {
      switch (this.scale) {
        case 'millisecond':
          this.current.add(this.step, 'millisecond');break;
        case 'second':
          this.current.add(this.step, 'second');break;
        case 'minute':
          this.current.add(this.step, 'minute');break;
        case 'hour':
          this.current.add(this.step, 'hour');break;
        case 'weekday': // intentional fall through
        case 'day':
          this.current.add(this.step, 'day');break;
        case 'month':
          this.current.add(this.step, 'month');break;
        case 'year':
          this.current.add(this.step, 'year');break;
        default:
          break;
      }
    }

    if (this.step != 1) {
      // round down to the correct major value
      switch (this.scale) {
        case 'millisecond':
          if (this.current.milliseconds() < this.step) this.current.milliseconds(0);break;
        case 'second':
          if (this.current.seconds() < this.step) this.current.seconds(0);break;
        case 'minute':
          if (this.current.minutes() < this.step) this.current.minutes(0);break;
        case 'hour':
          if (this.current.hours() < this.step) this.current.hours(0);break;
        case 'weekday': // intentional fall through
        case 'day':
          if (this.current.date() < this.step + 1) this.current.date(1);break;
        case 'month':
          if (this.current.month() < this.step) this.current.month(0);break;
        case 'year':
          break; // nothing to do for year
        default:
          break;
      }
    }

    // safety mechanism: if current time is still unchanged, move to the end
    if (this.current.valueOf() == prev) {
      this.current = this._end.clone();
    }

    DateUtil.stepOverHiddenDates(this.moment, this, prev);
  };

  /**
   * Get the current datetime
   * @return {Moment}  current The current date
   */
  TimeStep.prototype.getCurrent = function () {
    return this.current;
  };

  /**
   * Set a custom scale. Autoscaling will be disabled.
   * For example setScale('minute', 5) will result
   * in minor steps of 5 minutes, and major steps of an hour.
   *
   * @param {{scale: string, step: number}} params
   *                               An object containing two properties:
   *                               - A string 'scale'. Choose from 'millisecond', 'second',
   *                                 'minute', 'hour', 'weekday', 'day', 'month', 'year'.
   *                               - A number 'step'. A step size, by default 1.
   *                                 Choose for example 1, 2, 5, or 10.
   */
  TimeStep.prototype.setScale = function (params) {
    if (params && typeof params.scale == 'string') {
      this.scale = params.scale;
      this.step = params.step > 0 ? params.step : 1;
      this.autoScale = false;
    }
  };

  /**
   * Enable or disable autoscaling
   * @param {boolean} enable  If true, autoascaling is set true
   */
  TimeStep.prototype.setAutoScale = function (enable) {
    this.autoScale = enable;
  };

  /**
   * Automatically determine the scale that bests fits the provided minimum step
   * @param {Number} [minimumStep]  The minimum step size in milliseconds
   */
  TimeStep.prototype.setMinimumStep = function (minimumStep) {
    if (minimumStep == undefined) {
      return;
    }

    //var b = asc + ds;

    var stepYear = 1000 * 60 * 60 * 24 * 30 * 12;
    var stepMonth = 1000 * 60 * 60 * 24 * 30;
    var stepDay = 1000 * 60 * 60 * 24;
    var stepHour = 1000 * 60 * 60;
    var stepMinute = 1000 * 60;
    var stepSecond = 1000;
    var stepMillisecond = 1;

    // find the smallest step that is larger than the provided minimumStep
    if (stepYear * 1000 > minimumStep) {
      this.scale = 'year';this.step = 1000;
    }
    if (stepYear * 500 > minimumStep) {
      this.scale = 'year';this.step = 500;
    }
    if (stepYear * 100 > minimumStep) {
      this.scale = 'year';this.step = 100;
    }
    if (stepYear * 50 > minimumStep) {
      this.scale = 'year';this.step = 50;
    }
    if (stepYear * 10 > minimumStep) {
      this.scale = 'year';this.step = 10;
    }
    if (stepYear * 5 > minimumStep) {
      this.scale = 'year';this.step = 5;
    }
    if (stepYear > minimumStep) {
      this.scale = 'year';this.step = 1;
    }
    if (stepMonth * 3 > minimumStep) {
      this.scale = 'month';this.step = 3;
    }
    if (stepMonth > minimumStep) {
      this.scale = 'month';this.step = 1;
    }
    if (stepDay * 5 > minimumStep) {
      this.scale = 'day';this.step = 5;
    }
    if (stepDay * 2 > minimumStep) {
      this.scale = 'day';this.step = 2;
    }
    if (stepDay > minimumStep) {
      this.scale = 'day';this.step = 1;
    }
    if (stepDay / 2 > minimumStep) {
      this.scale = 'weekday';this.step = 1;
    }
    if (stepHour * 4 > minimumStep) {
      this.scale = 'hour';this.step = 4;
    }
    if (stepHour > minimumStep) {
      this.scale = 'hour';this.step = 1;
    }
    if (stepMinute * 15 > minimumStep) {
      this.scale = 'minute';this.step = 15;
    }
    if (stepMinute * 10 > minimumStep) {
      this.scale = 'minute';this.step = 10;
    }
    if (stepMinute * 5 > minimumStep) {
      this.scale = 'minute';this.step = 5;
    }
    if (stepMinute > minimumStep) {
      this.scale = 'minute';this.step = 1;
    }
    if (stepSecond * 15 > minimumStep) {
      this.scale = 'second';this.step = 15;
    }
    if (stepSecond * 10 > minimumStep) {
      this.scale = 'second';this.step = 10;
    }
    if (stepSecond * 5 > minimumStep) {
      this.scale = 'second';this.step = 5;
    }
    if (stepSecond > minimumStep) {
      this.scale = 'second';this.step = 1;
    }
    if (stepMillisecond * 200 > minimumStep) {
      this.scale = 'millisecond';this.step = 200;
    }
    if (stepMillisecond * 100 > minimumStep) {
      this.scale = 'millisecond';this.step = 100;
    }
    if (stepMillisecond * 50 > minimumStep) {
      this.scale = 'millisecond';this.step = 50;
    }
    if (stepMillisecond * 10 > minimumStep) {
      this.scale = 'millisecond';this.step = 10;
    }
    if (stepMillisecond * 5 > minimumStep) {
      this.scale = 'millisecond';this.step = 5;
    }
    if (stepMillisecond > minimumStep) {
      this.scale = 'millisecond';this.step = 1;
    }
  };

  /**
   * Snap a date to a rounded value.
   * The snap intervals are dependent on the current scale and step.
   * Static function
   * @param {Date} date    the date to be snapped.
   * @param {string} scale Current scale, can be 'millisecond', 'second',
   *                       'minute', 'hour', 'weekday, 'day', 'month', 'year'.
   * @param {number} step  Current step (1, 2, 4, 5, ...
   * @return {Date} snappedDate
   */
  TimeStep.snap = function (date, scale, step) {
    var clone = moment(date);

    if (scale == 'year') {
      var year = clone.year() + Math.round(clone.month() / 12);
      clone.year(Math.round(year / step) * step);
      clone.month(0);
      clone.date(0);
      clone.hours(0);
      clone.minutes(0);
      clone.seconds(0);
      clone.milliseconds(0);
    } else if (scale == 'month') {
      if (clone.date() > 15) {
        clone.date(1);
        clone.add(1, 'month');
        // important: first set Date to 1, after that change the month.
      } else {
          clone.date(1);
        }

      clone.hours(0);
      clone.minutes(0);
      clone.seconds(0);
      clone.milliseconds(0);
    } else if (scale == 'day') {
      //noinspection FallthroughInSwitchStatementJS
      switch (step) {
        case 5:
        case 2:
          clone.hours(Math.round(clone.hours() / 24) * 24);break;
        default:
          clone.hours(Math.round(clone.hours() / 12) * 12);break;
      }
      clone.minutes(0);
      clone.seconds(0);
      clone.milliseconds(0);
    } else if (scale == 'weekday') {
      //noinspection FallthroughInSwitchStatementJS
      switch (step) {
        case 5:
        case 2:
          clone.hours(Math.round(clone.hours() / 12) * 12);break;
        default:
          clone.hours(Math.round(clone.hours() / 6) * 6);break;
      }
      clone.minutes(0);
      clone.seconds(0);
      clone.milliseconds(0);
    } else if (scale == 'hour') {
      switch (step) {
        case 4:
          clone.minutes(Math.round(clone.minutes() / 60) * 60);break;
        default:
          clone.minutes(Math.round(clone.minutes() / 30) * 30);break;
      }
      clone.seconds(0);
      clone.milliseconds(0);
    } else if (scale == 'minute') {
      //noinspection FallthroughInSwitchStatementJS
      switch (step) {
        case 15:
        case 10:
          clone.minutes(Math.round(clone.minutes() / 5) * 5);
          clone.seconds(0);
          break;
        case 5:
          clone.seconds(Math.round(clone.seconds() / 60) * 60);break;
        default:
          clone.seconds(Math.round(clone.seconds() / 30) * 30);break;
      }
      clone.milliseconds(0);
    } else if (scale == 'second') {
      //noinspection FallthroughInSwitchStatementJS
      switch (step) {
        case 15:
        case 10:
          clone.seconds(Math.round(clone.seconds() / 5) * 5);
          clone.milliseconds(0);
          break;
        case 5:
          clone.milliseconds(Math.round(clone.milliseconds() / 1000) * 1000);break;
        default:
          clone.milliseconds(Math.round(clone.milliseconds() / 500) * 500);break;
      }
    } else if (scale == 'millisecond') {
      var _step = step > 5 ? step / 2 : 1;
      clone.milliseconds(Math.round(clone.milliseconds() / _step) * _step);
    }

    return clone;
  };

  /**
   * Check if the current value is a major value (for example when the step
   * is DAY, a major value is each first day of the MONTH)
   * @return {boolean} true if current date is major, else false.
   */
  TimeStep.prototype.isMajor = function () {
    if (this.switchedYear == true) {
      this.switchedYear = false;
      switch (this.scale) {
        case 'year':
        case 'month':
        case 'weekday':
        case 'day':
        case 'hour':
        case 'minute':
        case 'second':
        case 'millisecond':
          return true;
        default:
          return false;
      }
    } else if (this.switchedMonth == true) {
      this.switchedMonth = false;
      switch (this.scale) {
        case 'weekday':
        case 'day':
        case 'hour':
        case 'minute':
        case 'second':
        case 'millisecond':
          return true;
        default:
          return false;
      }
    } else if (this.switchedDay == true) {
      this.switchedDay = false;
      switch (this.scale) {
        case 'millisecond':
        case 'second':
        case 'minute':
        case 'hour':
          return true;
        default:
          return false;
      }
    }

    var date = this.moment(this.current);
    switch (this.scale) {
      case 'millisecond':
        return date.milliseconds() == 0;
      case 'second':
        return date.seconds() == 0;
      case 'minute':
        return date.hours() == 0 && date.minutes() == 0;
      case 'hour':
        return date.hours() == 0;
      case 'weekday': // intentional fall through
      case 'day':
        return date.date() == 1;
      case 'month':
        return date.month() == 0;
      case 'year':
        return false;
      default:
        return false;
    }
  };

  /**
   * Returns formatted text for the minor axislabel, depending on the current
   * date and the scale. For example when scale is MINUTE, the current time is
   * formatted as "hh:mm".
   * @param {Date} [date] custom date. if not provided, current date is taken
   */
  TimeStep.prototype.getLabelMinor = function (date) {
    if (date == undefined) {
      date = this.current;
    }

    var format = this.format.minorLabels[this.scale];
    return format && format.length > 0 ? this.moment(date).format(format) : '';
  };

  /**
   * Returns formatted text for the major axis label, depending on the current
   * date and the scale. For example when scale is MINUTE, the major scale is
   * hours, and the hour will be formatted as "hh".
   * @param {Date} [date] custom date. if not provided, current date is taken
   */
  TimeStep.prototype.getLabelMajor = function (date) {
    if (date == undefined) {
      date = this.current;
    }

    var format = this.format.majorLabels[this.scale];
    return format && format.length > 0 ? this.moment(date).format(format) : '';
  };

  TimeStep.prototype.getClassName = function () {
    var _moment = this.moment;
    var m = this.moment(this.current);
    var current = m.locale ? m.locale('en') : m.lang('en'); // old versions of moment have .lang() function
    var step = this.step;

    function even(value) {
      return value / step % 2 == 0 ? ' vis-even' : ' vis-odd';
    }

    function today(date) {
      if (date.isSame(new Date(), 'day')) {
        return ' vis-today';
      }
      if (date.isSame(_moment().add(1, 'day'), 'day')) {
        return ' vis-tomorrow';
      }
      if (date.isSame(_moment().add(-1, 'day'), 'day')) {
        return ' vis-yesterday';
      }
      return '';
    }

    function currentWeek(date) {
      return date.isSame(new Date(), 'week') ? ' vis-current-week' : '';
    }

    function currentMonth(date) {
      return date.isSame(new Date(), 'month') ? ' vis-current-month' : '';
    }

    function currentYear(date) {
      return date.isSame(new Date(), 'year') ? ' vis-current-year' : '';
    }

    switch (this.scale) {
      case 'millisecond':
        return even(current.milliseconds()).trim();

      case 'second':
        return even(current.seconds()).trim();

      case 'minute':
        return even(current.minutes()).trim();

      case 'hour':
        var hours = current.hours();
        if (this.step == 4) {
          hours = hours + '-h' + (hours + 4);
        }
        return 'vis-h' + hours + today(current) + even(current.hours());

      case 'weekday':
        return 'vis-' + current.format('dddd').toLowerCase() + today(current) + currentWeek(current) + even(current.date());

      case 'day':
        var day = current.date();
        var month = current.format('MMMM').toLowerCase();
        return 'vis-day' + day + ' vis-' + month + currentMonth(current) + even(day - 1);

      case 'month':
        return 'vis-' + current.format('MMMM').toLowerCase() + currentMonth(current) + even(current.month());

      case 'year':
        var year = current.year();
        return 'vis-year' + year + currentYear(current) + even(year);

      default:
        return '';
    }
  };

  module.exports = TimeStep;

/***/ },
/* 30 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var stack = __webpack_require__(31);
  var RangeItem = __webpack_require__(32);

  /**
   * @constructor Group
   * @param {Number | String} groupId
   * @param {Object} data
   * @param {ItemSet} itemSet
   */
  function Group(groupId, data, itemSet) {
    this.groupId = groupId;
    this.subgroups = {};
    this.subgroupIndex = 0;
    this.subgroupOrderer = data && data.subgroupOrder;
    this.itemSet = itemSet;

    this.dom = {};
    this.props = {
      label: {
        width: 0,
        height: 0
      }
    };
    this.className = null;

    this.items = {}; // items filtered by groupId of this group
    this.visibleItems = []; // items currently visible in window
    this.orderedItems = {
      byStart: [],
      byEnd: []
    };
    this.checkRangedItems = false; // needed to refresh the ranged items if the window is programatically changed with NO overlap.
    var me = this;
    this.itemSet.body.emitter.on("checkRangedItems", function () {
      me.checkRangedItems = true;
    });

    this._create();

    this.setData(data);
  }

  /**
   * Create DOM elements for the group
   * @private
   */
  Group.prototype._create = function () {
    var label = document.createElement('div');
    if (this.itemSet.options.groupEditable.order) {
      label.className = 'vis-label draggable';
    } else {
      label.className = 'vis-label';
    }
    this.dom.label = label;

    var inner = document.createElement('div');
    inner.className = 'vis-inner';
    label.appendChild(inner);
    this.dom.inner = inner;

    var foreground = document.createElement('div');
    foreground.className = 'vis-group';
    foreground['timeline-group'] = this;
    this.dom.foreground = foreground;

    this.dom.background = document.createElement('div');
    this.dom.background.className = 'vis-group';

    this.dom.axis = document.createElement('div');
    this.dom.axis.className = 'vis-group';

    // create a hidden marker to detect when the Timelines container is attached
    // to the DOM, or the style of a parent of the Timeline is changed from
    // display:none is changed to visible.
    this.dom.marker = document.createElement('div');
    this.dom.marker.style.visibility = 'hidden';
    this.dom.marker.innerHTML = '?';
    this.dom.background.appendChild(this.dom.marker);
  };

  /**
   * Set the group data for this group
   * @param {Object} data   Group data, can contain properties content and className
   */
  Group.prototype.setData = function (data) {
    // update contents
    var content;
    if (this.itemSet.options && this.itemSet.options.groupTemplate) {
      content = this.itemSet.options.groupTemplate(data);
    } else {
      content = data && data.content;
    }

    if (content instanceof Element) {
      this.dom.inner.appendChild(content);
      while (this.dom.inner.firstChild) {
        this.dom.inner.removeChild(this.dom.inner.firstChild);
      }
      this.dom.inner.appendChild(content);
    } else if (content !== undefined && content !== null) {
      this.dom.inner.innerHTML = content;
    } else {
      this.dom.inner.innerHTML = this.groupId || ''; // groupId can be null
    }

    // update title
    this.dom.label.title = data && data.title || '';

    if (!this.dom.inner.firstChild) {
      util.addClassName(this.dom.inner, 'vis-hidden');
    } else {
      util.removeClassName(this.dom.inner, 'vis-hidden');
    }

    // update className
    var className = data && data.className || null;
    if (className != this.className) {
      if (this.className) {
        util.removeClassName(this.dom.label, this.className);
        util.removeClassName(this.dom.foreground, this.className);
        util.removeClassName(this.dom.background, this.className);
        util.removeClassName(this.dom.axis, this.className);
      }
      util.addClassName(this.dom.label, className);
      util.addClassName(this.dom.foreground, className);
      util.addClassName(this.dom.background, className);
      util.addClassName(this.dom.axis, className);
      this.className = className;
    }

    // update style
    if (this.style) {
      util.removeCssText(this.dom.label, this.style);
      this.style = null;
    }
    if (data && data.style) {
      util.addCssText(this.dom.label, data.style);
      this.style = data.style;
    }
  };

  /**
   * Get the width of the group label
   * @return {number} width
   */
  Group.prototype.getLabelWidth = function () {
    return this.props.label.width;
  };

  /**
   * Repaint this group
   * @param {{start: number, end: number}} range
   * @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
   * @param {boolean} [restack=false]  Force restacking of all items
   * @return {boolean} Returns true if the group is resized
   */
  Group.prototype.redraw = function (range, margin, restack) {
    var resized = false;

    // force recalculation of the height of the items when the marker height changed
    // (due to the Timeline being attached to the DOM or changed from display:none to visible)
    var markerHeight = this.dom.marker.clientHeight;
    if (markerHeight != this.lastMarkerHeight) {
      this.lastMarkerHeight = markerHeight;

      util.forEach(this.items, function (item) {
        item.dirty = true;
        if (item.displayed) item.redraw();
      });

      restack = true;
    }

    // recalculate the height of the subgroups
    this._calculateSubGroupHeights();

    // reposition visible items vertically
    if (typeof this.itemSet.options.order === 'function') {
      // a custom order function

      if (restack) {
        // brute force restack of all items

        // show all items
        var me = this;
        var limitSize = false;
        util.forEach(this.items, function (item) {
          if (!item.displayed) {
            item.redraw();
            me.visibleItems.push(item);
          }
          item.repositionX(limitSize);
        });

        // order all items and force a restacking
        var customOrderedItems = this.orderedItems.byStart.slice().sort(function (a, b) {
          return me.itemSet.options.order(a.data, b.data);
        });
        stack.stack(customOrderedItems, margin, true /* restack=true */);
      }

      this.visibleItems = this._updateVisibleItems(this.orderedItems, this.visibleItems, range);
    } else {
      // no custom order function, lazy stacking
      this.visibleItems = this._updateVisibleItems(this.orderedItems, this.visibleItems, range);

      if (this.itemSet.options.stack) {
        // TODO: ugly way to access options...
        stack.stack(this.visibleItems, margin, restack);
      } else {
        // no stacking
        stack.nostack(this.visibleItems, margin, this.subgroups);
      }
    }

    // recalculate the height of the group
    var height = this._calculateHeight(margin);

    // calculate actual size and position
    var foreground = this.dom.foreground;
    this.top = foreground.offsetTop;
    this.left = foreground.offsetLeft;
    this.width = foreground.offsetWidth;
    resized = util.updateProperty(this, 'height', height) || resized;

    // recalculate size of label
    resized = util.updateProperty(this.props.label, 'width', this.dom.inner.clientWidth) || resized;
    resized = util.updateProperty(this.props.label, 'height', this.dom.inner.clientHeight) || resized;

    // apply new height
    this.dom.background.style.height = height + 'px';
    this.dom.foreground.style.height = height + 'px';
    this.dom.label.style.height = height + 'px';

    // update vertical position of items after they are re-stacked and the height of the group is calculated
    for (var i = 0, ii = this.visibleItems.length; i < ii; i++) {
      var item = this.visibleItems[i];
      item.repositionY(margin);
    }

    return resized;
  };

  /**
   * recalculate the height of the subgroups
   * @private
   */
  Group.prototype._calculateSubGroupHeights = function () {
    if (Object.keys(this.subgroups).length > 0) {
      var me = this;

      this.resetSubgroups();

      util.forEach(this.visibleItems, function (item) {
        if (item.data.subgroup !== undefined) {
          me.subgroups[item.data.subgroup].height = Math.max(me.subgroups[item.data.subgroup].height, item.height);
          me.subgroups[item.data.subgroup].visible = true;
        }
      });
    }
  };

  /**
   * recalculate the height of the group
   * @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
   * @returns {number} Returns the height
   * @private
   */
  Group.prototype._calculateHeight = function (margin) {
    // recalculate the height of the group
    var height;
    var visibleItems = this.visibleItems;
    if (visibleItems.length > 0) {
      var min = visibleItems[0].top;
      var max = visibleItems[0].top + visibleItems[0].height;
      util.forEach(visibleItems, function (item) {
        min = Math.min(min, item.top);
        max = Math.max(max, item.top + item.height);
      });
      if (min > margin.axis) {
        // there is an empty gap between the lowest item and the axis
        var offset = min - margin.axis;
        max -= offset;
        util.forEach(visibleItems, function (item) {
          item.top -= offset;
        });
      }
      height = max + margin.item.vertical / 2;
    } else {
      height = 0;
    }
    height = Math.max(height, this.props.label.height);

    return height;
  };

  /**
   * Show this group: attach to the DOM
   */
  Group.prototype.show = function () {
    if (!this.dom.label.parentNode) {
      this.itemSet.dom.labelSet.appendChild(this.dom.label);
    }

    if (!this.dom.foreground.parentNode) {
      this.itemSet.dom.foreground.appendChild(this.dom.foreground);
    }

    if (!this.dom.background.parentNode) {
      this.itemSet.dom.background.appendChild(this.dom.background);
    }

    if (!this.dom.axis.parentNode) {
      this.itemSet.dom.axis.appendChild(this.dom.axis);
    }
  };

  /**
   * Hide this group: remove from the DOM
   */
  Group.prototype.hide = function () {
    var label = this.dom.label;
    if (label.parentNode) {
      label.parentNode.removeChild(label);
    }

    var foreground = this.dom.foreground;
    if (foreground.parentNode) {
      foreground.parentNode.removeChild(foreground);
    }

    var background = this.dom.background;
    if (background.parentNode) {
      background.parentNode.removeChild(background);
    }

    var axis = this.dom.axis;
    if (axis.parentNode) {
      axis.parentNode.removeChild(axis);
    }
  };

  /**
   * Add an item to the group
   * @param {Item} item
   */
  Group.prototype.add = function (item) {
    this.items[item.id] = item;
    item.setParent(this);

    // add to
    if (item.data.subgroup !== undefined) {
      if (this.subgroups[item.data.subgroup] === undefined) {
        this.subgroups[item.data.subgroup] = { height: 0, visible: false, index: this.subgroupIndex, items: [] };
        this.subgroupIndex++;
      }
      this.subgroups[item.data.subgroup].items.push(item);
    }
    this.orderSubgroups();

    if (this.visibleItems.indexOf(item) == -1) {
      var range = this.itemSet.body.range; // TODO: not nice accessing the range like this
      this._checkIfVisible(item, this.visibleItems, range);
    }
  };

  Group.prototype.orderSubgroups = function () {
    if (this.subgroupOrderer !== undefined) {
      var sortArray = [];
      if (typeof this.subgroupOrderer == 'string') {
        for (var subgroup in this.subgroups) {
          sortArray.push({ subgroup: subgroup, sortField: this.subgroups[subgroup].items[0].data[this.subgroupOrderer] });
        }
        sortArray.sort(function (a, b) {
          return a.sortField - b.sortField;
        });
      } else if (typeof this.subgroupOrderer == 'function') {
        for (var subgroup in this.subgroups) {
          sortArray.push(this.subgroups[subgroup].items[0].data);
        }
        sortArray.sort(this.subgroupOrderer);
      }

      if (sortArray.length > 0) {
        for (var i = 0; i < sortArray.length; i++) {
          this.subgroups[sortArray[i].subgroup].index = i;
        }
      }
    }
  };

  Group.prototype.resetSubgroups = function () {
    for (var subgroup in this.subgroups) {
      if (this.subgroups.hasOwnProperty(subgroup)) {
        this.subgroups[subgroup].visible = false;
      }
    }
  };

  /**
   * Remove an item from the group
   * @param {Item} item
   */
  Group.prototype.remove = function (item) {
    delete this.items[item.id];
    item.setParent(null);

    // remove from visible items
    var index = this.visibleItems.indexOf(item);
    if (index != -1) this.visibleItems.splice(index, 1);

    if (item.data.subgroup !== undefined) {
      var subgroup = this.subgroups[item.data.subgroup];
      if (subgroup) {
        var itemIndex = subgroup.items.indexOf(item);
        subgroup.items.splice(itemIndex, 1);
        if (!subgroup.items.length) {
          delete this.subgroups[item.data.subgroup];
          this.subgroupIndex--;
        }
        this.orderSubgroups();
      }
    }
  };

  /**
   * Remove an item from the corresponding DataSet
   * @param {Item} item
   */
  Group.prototype.removeFromDataSet = function (item) {
    this.itemSet.removeItem(item.id);
  };

  /**
   * Reorder the items
   */
  Group.prototype.order = function () {
    var array = util.toArray(this.items);
    var startArray = [];
    var endArray = [];

    for (var i = 0; i < array.length; i++) {
      if (array[i].data.end !== undefined) {
        endArray.push(array[i]);
      }
      startArray.push(array[i]);
    }
    this.orderedItems = {
      byStart: startArray,
      byEnd: endArray
    };

    stack.orderByStart(this.orderedItems.byStart);
    stack.orderByEnd(this.orderedItems.byEnd);
  };

  /**
   * Update the visible items
   * @param {{byStart: Item[], byEnd: Item[]}} orderedItems   All items ordered by start date and by end date
   * @param {Item[]} visibleItems                             The previously visible items.
   * @param {{start: number, end: number}} range              Visible range
   * @return {Item[]} visibleItems                            The new visible items.
   * @private
   */
  Group.prototype._updateVisibleItems = function (orderedItems, oldVisibleItems, range) {
    var visibleItems = [];
    var visibleItemsLookup = {}; // we keep this to quickly look up if an item already exists in the list without using indexOf on visibleItems
    var interval = (range.end - range.start) / 4;
    var lowerBound = range.start - interval;
    var upperBound = range.end + interval;
    var item, i;

    // this function is used to do the binary search.
    var searchFunction = function searchFunction(value) {
      if (value < lowerBound) {
        return -1;
      } else if (value <= upperBound) {
        return 0;
      } else {
        return 1;
      }
    };

    // first check if the items that were in view previously are still in view.
    // IMPORTANT: this handles the case for the items with startdate before the window and enddate after the window!
    // also cleans up invisible items.
    if (oldVisibleItems.length > 0) {
      for (i = 0; i < oldVisibleItems.length; i++) {
        this._checkIfVisibleWithReference(oldVisibleItems[i], visibleItems, visibleItemsLookup, range);
      }
    }

    // we do a binary search for the items that have only start values.
    var initialPosByStart = util.binarySearchCustom(orderedItems.byStart, searchFunction, 'data', 'start');

    // trace the visible items from the inital start pos both ways until an invisible item is found, we only look at the start values.
    this._traceVisible(initialPosByStart, orderedItems.byStart, visibleItems, visibleItemsLookup, function (item) {
      return item.data.start < lowerBound || item.data.start > upperBound;
    });

    // if the window has changed programmatically without overlapping the old window, the ranged items with start < lowerBound and end > upperbound are not shown.
    // We therefore have to brute force check all items in the byEnd list
    if (this.checkRangedItems == true) {
      this.checkRangedItems = false;
      for (i = 0; i < orderedItems.byEnd.length; i++) {
        this._checkIfVisibleWithReference(orderedItems.byEnd[i], visibleItems, visibleItemsLookup, range);
      }
    } else {
      // we do a binary search for the items that have defined end times.
      var initialPosByEnd = util.binarySearchCustom(orderedItems.byEnd, searchFunction, 'data', 'end');

      // trace the visible items from the inital start pos both ways until an invisible item is found, we only look at the end values.
      this._traceVisible(initialPosByEnd, orderedItems.byEnd, visibleItems, visibleItemsLookup, function (item) {
        return item.data.end < lowerBound || item.data.end > upperBound;
      });
    }

    // finally, we reposition all the visible items.
    for (i = 0; i < visibleItems.length; i++) {
      item = visibleItems[i];
      if (!item.displayed) item.show();
      // reposition item horizontally
      item.repositionX();
    }

    // debug
    //console.log("new line")
    //if (this.groupId == null) {
    //  for (i = 0; i < orderedItems.byStart.length; i++) {
    //    item = orderedItems.byStart[i].data;
    //    console.log('start',i,initialPosByStart, item.start.valueOf(), item.content, item.start >= lowerBound && item.start <= upperBound,i == initialPosByStart ? "<------------------- HEREEEE" : "")
    //  }
    //  for (i = 0; i < orderedItems.byEnd.length; i++) {
    //    item = orderedItems.byEnd[i].data;
    //    console.log('rangeEnd',i,initialPosByEnd, item.end.valueOf(), item.content, item.end >= range.start && item.end <= range.end,i == initialPosByEnd ? "<------------------- HEREEEE" : "")
    //  }
    //}

    return visibleItems;
  };

  Group.prototype._traceVisible = function (initialPos, items, visibleItems, visibleItemsLookup, breakCondition) {
    var item;
    var i;

    if (initialPos != -1) {
      for (i = initialPos; i >= 0; i--) {
        item = items[i];
        if (breakCondition(item)) {
          break;
        } else {
          if (visibleItemsLookup[item.id] === undefined) {
            visibleItemsLookup[item.id] = true;
            visibleItems.push(item);
          }
        }
      }

      for (i = initialPos + 1; i < items.length; i++) {
        item = items[i];
        if (breakCondition(item)) {
          break;
        } else {
          if (visibleItemsLookup[item.id] === undefined) {
            visibleItemsLookup[item.id] = true;
            visibleItems.push(item);
          }
        }
      }
    }
  };

  /**
   * this function is very similar to the _checkIfInvisible() but it does not
   * return booleans, hides the item if it should not be seen and always adds to
   * the visibleItems.
   * this one is for brute forcing and hiding.
   *
   * @param {Item} item
   * @param {Array} visibleItems
   * @param {{start:number, end:number}} range
   * @private
   */
  Group.prototype._checkIfVisible = function (item, visibleItems, range) {
    if (item.isVisible(range)) {
      if (!item.displayed) item.show();
      // reposition item horizontally
      item.repositionX();
      visibleItems.push(item);
    } else {
      if (item.displayed) item.hide();
    }
  };

  /**
   * this function is very similar to the _checkIfInvisible() but it does not
   * return booleans, hides the item if it should not be seen and always adds to
   * the visibleItems.
   * this one is for brute forcing and hiding.
   *
   * @param {Item} item
   * @param {Array} visibleItems
   * @param {{start:number, end:number}} range
   * @private
   */
  Group.prototype._checkIfVisibleWithReference = function (item, visibleItems, visibleItemsLookup, range) {
    if (item.isVisible(range)) {
      if (visibleItemsLookup[item.id] === undefined) {
        visibleItemsLookup[item.id] = true;
        visibleItems.push(item);
      }
    } else {
      if (item.displayed) item.hide();
    }
  };

  module.exports = Group;

/***/ },
/* 31 */
/***/ function(module, exports) {

  // Utility functions for ordering and stacking of items
  'use strict';

  var EPSILON = 0.001; // used when checking collisions, to prevent round-off errors

  /**
   * Order items by their start data
   * @param {Item[]} items
   */
  exports.orderByStart = function (items) {
    items.sort(function (a, b) {
      return a.data.start - b.data.start;
    });
  };

  /**
   * Order items by their end date. If they have no end date, their start date
   * is used.
   * @param {Item[]} items
   */
  exports.orderByEnd = function (items) {
    items.sort(function (a, b) {
      var aTime = 'end' in a.data ? a.data.end : a.data.start,
          bTime = 'end' in b.data ? b.data.end : b.data.start;

      return aTime - bTime;
    });
  };

  /**
   * Adjust vertical positions of the items such that they don't overlap each
   * other.
   * @param {Item[]} items
   *            All visible items
   * @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
   *            Margins between items and between items and the axis.
   * @param {boolean} [force=false]
   *            If true, all items will be repositioned. If false (default), only
   *            items having a top===null will be re-stacked
   */
  exports.stack = function (items, margin, force) {
    var i, iMax;

    if (force) {
      // reset top position of all items
      for (i = 0, iMax = items.length; i < iMax; i++) {
        items[i].top = null;
      }
    }

    // calculate new, non-overlapping positions
    for (i = 0, iMax = items.length; i < iMax; i++) {
      var item = items[i];
      if (item.stack && item.top === null) {
        // initialize top position
        item.top = margin.axis;

        do {
          // TODO: optimize checking for overlap. when there is a gap without items,
          //       you only need to check for items from the next item on, not from zero
          var collidingItem = null;
          for (var j = 0, jj = items.length; j < jj; j++) {
            var other = items[j];
            if (other.top !== null && other !== item && other.stack && exports.collision(item, other, margin.item)) {
              collidingItem = other;
              break;
            }
          }

          if (collidingItem != null) {
            // There is a collision. Reposition the items above the colliding element
            item.top = collidingItem.top + collidingItem.height + margin.item.vertical;
          }
        } while (collidingItem);
      }
    }
  };

  /**
   * Adjust vertical positions of the items without stacking them
   * @param {Item[]} items
   *            All visible items
   * @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
   *            Margins between items and between items and the axis.
   */
  exports.nostack = function (items, margin, subgroups) {
    var i, iMax, newTop;

    // reset top position of all items
    for (i = 0, iMax = items.length; i < iMax; i++) {
      if (items[i].data.subgroup !== undefined) {
        newTop = margin.axis;
        for (var subgroup in subgroups) {
          if (subgroups.hasOwnProperty(subgroup)) {
            if (subgroups[subgroup].visible == true && subgroups[subgroup].index < subgroups[items[i].data.subgroup].index) {
              newTop += subgroups[subgroup].height + margin.item.vertical;
            }
          }
        }
        items[i].top = newTop;
      } else {
        items[i].top = margin.axis;
      }
    }
  };

  /**
   * Test if the two provided items collide
   * The items must have parameters left, width, top, and height.
   * @param {Item} a          The first item
   * @param {Item} b          The second item
   * @param {{horizontal: number, vertical: number}} margin
   *                          An object containing a horizontal and vertical
   *                          minimum required margin.
   * @return {boolean}        true if a and b collide, else false
   */
  exports.collision = function (a, b, margin) {
    return a.left - margin.horizontal + EPSILON < b.left + b.width && a.left + a.width + margin.horizontal - EPSILON > b.left && a.top - margin.vertical + EPSILON < b.top + b.height && a.top + a.height + margin.vertical - EPSILON > b.top;
  };

/***/ },
/* 32 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Hammer = __webpack_require__(20);
  var Item = __webpack_require__(33);

  /**
   * @constructor RangeItem
   * @extends Item
   * @param {Object} data             Object containing parameters start, end
   *                                  content, className.
   * @param {{toScreen: function, toTime: function}} conversion
   *                                  Conversion functions from time to screen and vice versa
   * @param {Object} [options]        Configuration options
   *                                  // TODO: describe options
   */
  function RangeItem(data, conversion, options) {
    this.props = {
      content: {
        width: 0
      }
    };
    this.overflow = false; // if contents can overflow (css styling), this flag is set to true

    // validate data
    if (data) {
      if (data.start == undefined) {
        throw new Error('Property "start" missing in item ' + data.id);
      }
      if (data.end == undefined) {
        throw new Error('Property "end" missing in item ' + data.id);
      }
    }

    Item.call(this, data, conversion, options);
  }

  RangeItem.prototype = new Item(null, null, null);

  RangeItem.prototype.baseClassName = 'vis-item vis-range';

  /**
   * Check whether this item is visible inside given range
   * @returns {{start: Number, end: Number}} range with a timestamp for start and end
   * @returns {boolean} True if visible
   */
  RangeItem.prototype.isVisible = function (range) {
    // determine visibility
    return this.data.start < range.end && this.data.end > range.start;
  };

  /**
   * Repaint the item
   */
  RangeItem.prototype.redraw = function () {
    var dom = this.dom;
    if (!dom) {
      // create DOM
      this.dom = {};
      dom = this.dom;

      // background box
      dom.box = document.createElement('div');
      // className is updated in redraw()

      // frame box (to prevent the item contents from overflowing
      dom.frame = document.createElement('div');
      dom.frame.className = 'vis-item-overflow';
      dom.box.appendChild(dom.frame);

      // contents box
      dom.content = document.createElement('div');
      dom.content.className = 'vis-item-content';
      dom.frame.appendChild(dom.content);

      // attach this item as attribute
      dom.box['timeline-item'] = this;

      this.dirty = true;
    }

    // append DOM to parent DOM
    if (!this.parent) {
      throw new Error('Cannot redraw item: no parent attached');
    }
    if (!dom.box.parentNode) {
      var foreground = this.parent.dom.foreground;
      if (!foreground) {
        throw new Error('Cannot redraw item: parent has no foreground container element');
      }
      foreground.appendChild(dom.box);
    }
    this.displayed = true;

    // Update DOM when item is marked dirty. An item is marked dirty when:
    // - the item is not yet rendered
    // - the item's data is changed
    // - the item is selected/deselected
    if (this.dirty) {
      this._updateContents(this.dom.content);
      this._updateTitle(this.dom.box);
      this._updateDataAttributes(this.dom.box);
      this._updateStyle(this.dom.box);

      var editable = (this.options.editable.updateTime || this.options.editable.updateGroup || this.editable === true) && this.editable !== false;

      // update class
      var className = (this.data.className ? ' ' + this.data.className : '') + (this.selected ? ' vis-selected' : '') + (editable ? ' vis-editable' : ' vis-readonly');
      dom.box.className = this.baseClassName + className;

      // determine from css whether this box has overflow
      this.overflow = window.getComputedStyle(dom.frame).overflow !== 'hidden';

      // recalculate size
      // turn off max-width to be able to calculate the real width
      // this causes an extra browser repaint/reflow, but so be it
      this.dom.content.style.maxWidth = 'none';
      this.props.content.width = this.dom.content.offsetWidth;
      this.height = this.dom.box.offsetHeight;
      this.dom.content.style.maxWidth = '';

      this.dirty = false;
    }

    this._repaintDeleteButton(dom.box);
    this._repaintDragLeft();
    this._repaintDragRight();
  };

  /**
   * Show the item in the DOM (when not already visible). The items DOM will
   * be created when needed.
   */
  RangeItem.prototype.show = function () {
    if (!this.displayed) {
      this.redraw();
    }
  };

  /**
   * Hide the item from the DOM (when visible)
   * @return {Boolean} changed
   */
  RangeItem.prototype.hide = function () {
    if (this.displayed) {
      var box = this.dom.box;

      if (box.parentNode) {
        box.parentNode.removeChild(box);
      }

      this.displayed = false;
    }
  };

  /**
   * Reposition the item horizontally
   * @param {boolean} [limitSize=true] If true (default), the width of the range
   *                                   item will be limited, as the browser cannot
   *                                   display very wide divs. This means though
   *                                   that the applied left and width may
   *                                   not correspond to the ranges start and end
   * @Override
   */
  RangeItem.prototype.repositionX = function (limitSize) {
    var parentWidth = this.parent.width;
    var start = this.conversion.toScreen(this.data.start);
    var end = this.conversion.toScreen(this.data.end);
    var contentLeft;
    var contentWidth;

    // limit the width of the range, as browsers cannot draw very wide divs
    if (limitSize === undefined || limitSize === true) {
      if (start < -parentWidth) {
        start = -parentWidth;
      }
      if (end > 2 * parentWidth) {
        end = 2 * parentWidth;
      }
    }
    var boxWidth = Math.max(end - start, 1);

    if (this.overflow) {
      this.left = start;
      this.width = boxWidth + this.props.content.width;
      contentWidth = this.props.content.width;

      // Note: The calculation of width is an optimistic calculation, giving
      //       a width which will not change when moving the Timeline
      //       So no re-stacking needed, which is nicer for the eye;
    } else {
        this.left = start;
        this.width = boxWidth;
        contentWidth = Math.min(end - start, this.props.content.width);
      }

    this.dom.box.style.left = this.left + 'px';
    this.dom.box.style.width = boxWidth + 'px';

    switch (this.options.align) {
      case 'left':
        this.dom.content.style.left = '0';
        break;

      case 'right':
        this.dom.content.style.left = Math.max(boxWidth - contentWidth, 0) + 'px';
        break;

      case 'center':
        this.dom.content.style.left = Math.max((boxWidth - contentWidth) / 2, 0) + 'px';
        break;

      default:
        // 'auto'
        // when range exceeds left of the window, position the contents at the left of the visible area
        if (this.overflow) {
          if (end > 0) {
            contentLeft = Math.max(-start, 0);
          } else {
            contentLeft = -contentWidth; // ensure it's not visible anymore
          }
        } else {
            if (start < 0) {
              contentLeft = -start;
            } else {
              contentLeft = 0;
            }
          }
        this.dom.content.style.left = contentLeft + 'px';
    }
  };

  /**
   * Reposition the item vertically
   * @Override
   */
  RangeItem.prototype.repositionY = function () {
    var orientation = this.options.orientation.item;
    var box = this.dom.box;

    if (orientation == 'top') {
      box.style.top = this.top + 'px';
    } else {
      box.style.top = this.parent.height - this.top - this.height + 'px';
    }
  };

  /**
   * Repaint a drag area on the left side of the range when the range is selected
   * @protected
   */
  RangeItem.prototype._repaintDragLeft = function () {
    if (this.selected && this.options.editable.updateTime && !this.dom.dragLeft) {
      // create and show drag area
      var dragLeft = document.createElement('div');
      dragLeft.className = 'vis-drag-left';
      dragLeft.dragLeftItem = this;

      this.dom.box.appendChild(dragLeft);
      this.dom.dragLeft = dragLeft;
    } else if (!this.selected && this.dom.dragLeft) {
      // delete drag area
      if (this.dom.dragLeft.parentNode) {
        this.dom.dragLeft.parentNode.removeChild(this.dom.dragLeft);
      }
      this.dom.dragLeft = null;
    }
  };

  /**
   * Repaint a drag area on the right side of the range when the range is selected
   * @protected
   */
  RangeItem.prototype._repaintDragRight = function () {
    if (this.selected && this.options.editable.updateTime && !this.dom.dragRight) {
      // create and show drag area
      var dragRight = document.createElement('div');
      dragRight.className = 'vis-drag-right';
      dragRight.dragRightItem = this;

      this.dom.box.appendChild(dragRight);
      this.dom.dragRight = dragRight;
    } else if (!this.selected && this.dom.dragRight) {
      // delete drag area
      if (this.dom.dragRight.parentNode) {
        this.dom.dragRight.parentNode.removeChild(this.dom.dragRight);
      }
      this.dom.dragRight = null;
    }
  };

  module.exports = RangeItem;

/***/ },
/* 33 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Hammer = __webpack_require__(20);
  var util = __webpack_require__(1);

  /**
   * @constructor Item
   * @param {Object} data             Object containing (optional) parameters type,
   *                                  start, end, content, group, className.
   * @param {{toScreen: function, toTime: function}} conversion
   *                                  Conversion functions from time to screen and vice versa
   * @param {Object} options          Configuration options
   *                                  // TODO: describe available options
   */
  function Item(data, conversion, options) {
    this.id = null;
    this.parent = null;
    this.data = data;
    this.dom = null;
    this.conversion = conversion || {};
    this.options = options || {};

    this.selected = false;
    this.displayed = false;
    this.dirty = true;

    this.top = null;
    this.left = null;
    this.width = null;
    this.height = null;

    this.editable = null;
    if (this.data && this.data.hasOwnProperty('editable') && typeof this.data.editable === 'boolean') {
      this.editable = data.editable;
    }
  }

  Item.prototype.stack = true;

  /**
   * Select current item
   */
  Item.prototype.select = function () {
    this.selected = true;
    this.dirty = true;
    if (this.displayed) this.redraw();
  };

  /**
   * Unselect current item
   */
  Item.prototype.unselect = function () {
    this.selected = false;
    this.dirty = true;
    if (this.displayed) this.redraw();
  };

  /**
   * Set data for the item. Existing data will be updated. The id should not
   * be changed. When the item is displayed, it will be redrawn immediately.
   * @param {Object} data
   */
  Item.prototype.setData = function (data) {
    var groupChanged = data.group != undefined && this.data.group != data.group;
    if (groupChanged) {
      this.parent.itemSet._moveToGroup(this, data.group);
    }

    if (data.hasOwnProperty('editable') && typeof data.editable === 'boolean') {
      this.editable = data.editable;
    }

    this.data = data;
    this.dirty = true;
    if (this.displayed) this.redraw();
  };

  /**
   * Set a parent for the item
   * @param {ItemSet | Group} parent
   */
  Item.prototype.setParent = function (parent) {
    if (this.displayed) {
      this.hide();
      this.parent = parent;
      if (this.parent) {
        this.show();
      }
    } else {
      this.parent = parent;
    }
  };

  /**
   * Check whether this item is visible inside given range
   * @returns {{start: Number, end: Number}} range with a timestamp for start and end
   * @returns {boolean} True if visible
   */
  Item.prototype.isVisible = function (range) {
    // Should be implemented by Item implementations
    return false;
  };

  /**
   * Show the Item in the DOM (when not already visible)
   * @return {Boolean} changed
   */
  Item.prototype.show = function () {
    return false;
  };

  /**
   * Hide the Item from the DOM (when visible)
   * @return {Boolean} changed
   */
  Item.prototype.hide = function () {
    return false;
  };

  /**
   * Repaint the item
   */
  Item.prototype.redraw = function () {
    // should be implemented by the item
  };

  /**
   * Reposition the Item horizontally
   */
  Item.prototype.repositionX = function () {
    // should be implemented by the item
  };

  /**
   * Reposition the Item vertically
   */
  Item.prototype.repositionY = function () {
    // should be implemented by the item
  };

  /**
   * Repaint a delete button on the top right of the item when the item is selected
   * @param {HTMLElement} anchor
   * @protected
   */
  Item.prototype._repaintDeleteButton = function (anchor) {
    var editable = (this.options.editable.remove || this.data.editable === true) && this.data.editable !== false;

    if (this.selected && editable && !this.dom.deleteButton) {
      // create and show button
      var me = this;

      var deleteButton = document.createElement('div');
      deleteButton.className = 'vis-delete';
      deleteButton.title = 'Delete this item';

      // TODO: be able to destroy the delete button
      new Hammer(deleteButton).on('tap', function (event) {
        event.stopPropagation();
        me.parent.removeFromDataSet(me);
      });

      anchor.appendChild(deleteButton);
      this.dom.deleteButton = deleteButton;
    } else if (!this.selected && this.dom.deleteButton) {
      // remove button
      if (this.dom.deleteButton.parentNode) {
        this.dom.deleteButton.parentNode.removeChild(this.dom.deleteButton);
      }
      this.dom.deleteButton = null;
    }
  };

  /**
   * Set HTML contents for the item
   * @param {Element} element   HTML element to fill with the contents
   * @private
   */
  Item.prototype._updateContents = function (element) {
    var content;
    if (this.options.template) {
      var itemData = this.parent.itemSet.itemsData.get(this.id); // get a clone of the data from the dataset
      content = this.options.template(itemData);
    } else {
      content = this.data.content;
    }

    var changed = this._contentToString(this.content) !== this._contentToString(content);
    if (changed) {
      // only replace the content when changed
      if (content instanceof Element) {
        element.innerHTML = '';
        element.appendChild(content);
      } else if (content != undefined) {
        element.innerHTML = content;
      } else {
        if (!(this.data.type == 'background' && this.data.content === undefined)) {
          throw new Error('Property "content" missing in item ' + this.id);
        }
      }

      this.content = content;
    }
  };

  /**
   * Set HTML contents for the item
   * @param {Element} element   HTML element to fill with the contents
   * @private
   */
  Item.prototype._updateTitle = function (element) {
    if (this.data.title != null) {
      element.title = this.data.title || '';
    } else {
      element.removeAttribute('vis-title');
    }
  };

  /**
   * Process dataAttributes timeline option and set as data- attributes on dom.content
   * @param {Element} element   HTML element to which the attributes will be attached
   * @private
   */
  Item.prototype._updateDataAttributes = function (element) {
    if (this.options.dataAttributes && this.options.dataAttributes.length > 0) {
      var attributes = [];

      if (Array.isArray(this.options.dataAttributes)) {
        attributes = this.options.dataAttributes;
      } else if (this.options.dataAttributes == 'all') {
        attributes = Object.keys(this.data);
      } else {
        return;
      }

      for (var i = 0; i < attributes.length; i++) {
        var name = attributes[i];
        var value = this.data[name];

        if (value != null) {
          element.setAttribute('data-' + name, value);
        } else {
          element.removeAttribute('data-' + name);
        }
      }
    }
  };

  /**
   * Update custom styles of the element
   * @param element
   * @private
   */
  Item.prototype._updateStyle = function (element) {
    // remove old styles
    if (this.style) {
      util.removeCssText(element, this.style);
      this.style = null;
    }

    // append new styles
    if (this.data.style) {
      util.addCssText(element, this.data.style);
      this.style = this.data.style;
    }
  };

  /**
   * Stringify the items contents
   * @param {string | Element | undefined} content
   * @returns {string | undefined}
   * @private
   */
  Item.prototype._contentToString = function (content) {
    if (typeof content === 'string') return content;
    if (content && 'outerHTML' in content) return content.outerHTML;
    return content;
  };

  /**
   * Return the width of the item left from its start date
   * @return {number}
   */
  Item.prototype.getWidthLeft = function () {
    return 0;
  };

  /**
   * Return the width of the item right from the max of its start and end date
   * @return {number}
   */
  Item.prototype.getWidthRight = function () {
    return 0;
  };

  module.exports = Item;

/***/ },
/* 34 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var Group = __webpack_require__(30);

  /**
   * @constructor BackgroundGroup
   * @param {Number | String} groupId
   * @param {Object} data
   * @param {ItemSet} itemSet
   */
  function BackgroundGroup(groupId, data, itemSet) {
    Group.call(this, groupId, data, itemSet);

    this.width = 0;
    this.height = 0;
    this.top = 0;
    this.left = 0;
  }

  BackgroundGroup.prototype = Object.create(Group.prototype);

  /**
   * Repaint this group
   * @param {{start: number, end: number}} range
   * @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
   * @param {boolean} [restack=false]  Force restacking of all items
   * @return {boolean} Returns true if the group is resized
   */
  BackgroundGroup.prototype.redraw = function (range, margin, restack) {
    var resized = false;

    this.visibleItems = this._updateVisibleItems(this.orderedItems, this.visibleItems, range);

    // calculate actual size
    this.width = this.dom.background.offsetWidth;

    // apply new height (just always zero for BackgroundGroup
    this.dom.background.style.height = '0';

    // update vertical position of items after they are re-stacked and the height of the group is calculated
    for (var i = 0, ii = this.visibleItems.length; i < ii; i++) {
      var item = this.visibleItems[i];
      item.repositionY(margin);
    }

    return resized;
  };

  /**
   * Show this group: attach to the DOM
   */
  BackgroundGroup.prototype.show = function () {
    if (!this.dom.background.parentNode) {
      this.itemSet.dom.background.appendChild(this.dom.background);
    }
  };

  module.exports = BackgroundGroup;

/***/ },
/* 35 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Item = __webpack_require__(33);
  var util = __webpack_require__(1);

  /**
   * @constructor BoxItem
   * @extends Item
   * @param {Object} data             Object containing parameters start
   *                                  content, className.
   * @param {{toScreen: function, toTime: function}} conversion
   *                                  Conversion functions from time to screen and vice versa
   * @param {Object} [options]        Configuration options
   *                                  // TODO: describe available options
   */
  function BoxItem(data, conversion, options) {
    this.props = {
      dot: {
        width: 0,
        height: 0
      },
      line: {
        width: 0,
        height: 0
      }
    };

    // validate data
    if (data) {
      if (data.start == undefined) {
        throw new Error('Property "start" missing in item ' + data);
      }
    }

    Item.call(this, data, conversion, options);
  }

  BoxItem.prototype = new Item(null, null, null);

  /**
   * Check whether this item is visible inside given range
   * @returns {{start: Number, end: Number}} range with a timestamp for start and end
   * @returns {boolean} True if visible
   */
  BoxItem.prototype.isVisible = function (range) {
    // determine visibility
    // TODO: account for the real width of the item. Right now we just add 1/4 to the window
    var interval = (range.end - range.start) / 4;
    return this.data.start > range.start - interval && this.data.start < range.end + interval;
  };

  /**
   * Repaint the item
   */
  BoxItem.prototype.redraw = function () {
    var dom = this.dom;
    if (!dom) {
      // create DOM
      this.dom = {};
      dom = this.dom;

      // create main box
      dom.box = document.createElement('DIV');

      // contents box (inside the background box). used for making margins
      dom.content = document.createElement('DIV');
      dom.content.className = 'vis-item-content';
      dom.box.appendChild(dom.content);

      // line to axis
      dom.line = document.createElement('DIV');
      dom.line.className = 'vis-line';

      // dot on axis
      dom.dot = document.createElement('DIV');
      dom.dot.className = 'vis-dot';

      // attach this item as attribute
      dom.box['timeline-item'] = this;

      this.dirty = true;
    }

    // append DOM to parent DOM
    if (!this.parent) {
      throw new Error('Cannot redraw item: no parent attached');
    }
    if (!dom.box.parentNode) {
      var foreground = this.parent.dom.foreground;
      if (!foreground) throw new Error('Cannot redraw item: parent has no foreground container element');
      foreground.appendChild(dom.box);
    }
    if (!dom.line.parentNode) {
      var background = this.parent.dom.background;
      if (!background) throw new Error('Cannot redraw item: parent has no background container element');
      background.appendChild(dom.line);
    }
    if (!dom.dot.parentNode) {
      var axis = this.parent.dom.axis;
      if (!background) throw new Error('Cannot redraw item: parent has no axis container element');
      axis.appendChild(dom.dot);
    }
    this.displayed = true;

    // Update DOM when item is marked dirty. An item is marked dirty when:
    // - the item is not yet rendered
    // - the item's data is changed
    // - the item is selected/deselected
    if (this.dirty) {
      this._updateContents(this.dom.content);
      this._updateTitle(this.dom.box);
      this._updateDataAttributes(this.dom.box);
      this._updateStyle(this.dom.box);

      var editable = (this.options.editable.updateTime || this.options.editable.updateGroup || this.editable === true) && this.editable !== false;

      // update class
      var className = (this.data.className ? ' ' + this.data.className : '') + (this.selected ? ' vis-selected' : '') + (editable ? ' vis-editable' : ' vis-readonly');
      dom.box.className = 'vis-item vis-box' + className;
      dom.line.className = 'vis-item vis-line' + className;
      dom.dot.className = 'vis-item vis-dot' + className;

      // recalculate size
      this.props.dot.height = dom.dot.offsetHeight;
      this.props.dot.width = dom.dot.offsetWidth;
      this.props.line.width = dom.line.offsetWidth;
      this.width = dom.box.offsetWidth;
      this.height = dom.box.offsetHeight;

      this.dirty = false;
    }

    this._repaintDeleteButton(dom.box);
  };

  /**
   * Show the item in the DOM (when not already displayed). The items DOM will
   * be created when needed.
   */
  BoxItem.prototype.show = function () {
    if (!this.displayed) {
      this.redraw();
    }
  };

  /**
   * Hide the item from the DOM (when visible)
   */
  BoxItem.prototype.hide = function () {
    if (this.displayed) {
      var dom = this.dom;

      if (dom.box.parentNode) dom.box.parentNode.removeChild(dom.box);
      if (dom.line.parentNode) dom.line.parentNode.removeChild(dom.line);
      if (dom.dot.parentNode) dom.dot.parentNode.removeChild(dom.dot);

      this.displayed = false;
    }
  };

  /**
   * Reposition the item horizontally
   * @Override
   */
  BoxItem.prototype.repositionX = function () {
    var start = this.conversion.toScreen(this.data.start);
    var align = this.options.align;
    var left;

    // calculate left position of the box
    if (align == 'right') {
      this.left = start - this.width;
    } else if (align == 'left') {
      this.left = start;
    } else {
      // default or 'center'
      this.left = start - this.width / 2;
    }

    // reposition box
    this.dom.box.style.left = this.left + 'px';

    // reposition line
    this.dom.line.style.left = start - this.props.line.width / 2 + 'px';

    // reposition dot
    this.dom.dot.style.left = start - this.props.dot.width / 2 + 'px';
  };

  /**
   * Reposition the item vertically
   * @Override
   */
  BoxItem.prototype.repositionY = function () {
    var orientation = this.options.orientation.item;
    var box = this.dom.box;
    var line = this.dom.line;
    var dot = this.dom.dot;

    if (orientation == 'top') {
      box.style.top = (this.top || 0) + 'px';

      line.style.top = '0';
      line.style.height = this.parent.top + this.top + 1 + 'px';
      line.style.bottom = '';
    } else {
      // orientation 'bottom'
      var itemSetHeight = this.parent.itemSet.props.height; // TODO: this is nasty
      var lineHeight = itemSetHeight - this.parent.top - this.parent.height + this.top;

      box.style.top = (this.parent.height - this.top - this.height || 0) + 'px';
      line.style.top = itemSetHeight - lineHeight + 'px';
      line.style.bottom = '0';
    }

    dot.style.top = -this.props.dot.height / 2 + 'px';
  };

  /**
   * Return the width of the item left from its start date
   * @return {number}
   */
  BoxItem.prototype.getWidthLeft = function () {
    return this.width / 2;
  };

  /**
   * Return the width of the item right from its start date
   * @return {number}
   */
  BoxItem.prototype.getWidthRight = function () {
    return this.width / 2;
  };

  module.exports = BoxItem;

/***/ },
/* 36 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Item = __webpack_require__(33);

  /**
   * @constructor PointItem
   * @extends Item
   * @param {Object} data             Object containing parameters start
   *                                  content, className.
   * @param {{toScreen: function, toTime: function}} conversion
   *                                  Conversion functions from time to screen and vice versa
   * @param {Object} [options]        Configuration options
   *                                  // TODO: describe available options
   */
  function PointItem(data, conversion, options) {
    this.props = {
      dot: {
        top: 0,
        width: 0,
        height: 0
      },
      content: {
        height: 0,
        marginLeft: 0
      }
    };

    // validate data
    if (data) {
      if (data.start == undefined) {
        throw new Error('Property "start" missing in item ' + data);
      }
    }

    Item.call(this, data, conversion, options);
  }

  PointItem.prototype = new Item(null, null, null);

  /**
   * Check whether this item is visible inside given range
   * @returns {{start: Number, end: Number}} range with a timestamp for start and end
   * @returns {boolean} True if visible
   */
  PointItem.prototype.isVisible = function (range) {
    // determine visibility
    // TODO: account for the real width of the item. Right now we just add 1/4 to the window
    var interval = (range.end - range.start) / 4;
    return this.data.start > range.start - interval && this.data.start < range.end + interval;
  };

  /**
   * Repaint the item
   */
  PointItem.prototype.redraw = function () {
    var dom = this.dom;
    if (!dom) {
      // create DOM
      this.dom = {};
      dom = this.dom;

      // background box
      dom.point = document.createElement('div');
      // className is updated in redraw()

      // contents box, right from the dot
      dom.content = document.createElement('div');
      dom.content.className = 'vis-item-content';
      dom.point.appendChild(dom.content);

      // dot at start
      dom.dot = document.createElement('div');
      dom.point.appendChild(dom.dot);

      // attach this item as attribute
      dom.point['timeline-item'] = this;

      this.dirty = true;
    }

    // append DOM to parent DOM
    if (!this.parent) {
      throw new Error('Cannot redraw item: no parent attached');
    }
    if (!dom.point.parentNode) {
      var foreground = this.parent.dom.foreground;
      if (!foreground) {
        throw new Error('Cannot redraw item: parent has no foreground container element');
      }
      foreground.appendChild(dom.point);
    }
    this.displayed = true;

    // Update DOM when item is marked dirty. An item is marked dirty when:
    // - the item is not yet rendered
    // - the item's data is changed
    // - the item is selected/deselected
    if (this.dirty) {
      this._updateContents(this.dom.content);
      this._updateTitle(this.dom.point);
      this._updateDataAttributes(this.dom.point);
      this._updateStyle(this.dom.point);

      var editable = (this.options.editable.updateTime || this.options.editable.updateGroup || this.editable === true) && this.editable !== false;

      // update class
      var className = (this.data.className ? ' ' + this.data.className : '') + (this.selected ? ' vis-selected' : '') + (editable ? ' vis-editable' : ' vis-readonly');
      dom.point.className = 'vis-item vis-point' + className;
      dom.dot.className = 'vis-item vis-dot' + className;

      // recalculate size of dot and contents
      this.props.dot.width = dom.dot.offsetWidth;
      this.props.dot.height = dom.dot.offsetHeight;
      this.props.content.height = dom.content.offsetHeight;

      // resize contents
      dom.content.style.marginLeft = 2 * this.props.dot.width + 'px';
      //dom.content.style.marginRight = ... + 'px'; // TODO: margin right

      // recalculate size
      this.width = dom.point.offsetWidth;
      this.height = dom.point.offsetHeight;

      // reposition the dot
      dom.dot.style.top = (this.height - this.props.dot.height) / 2 + 'px';
      dom.dot.style.left = this.props.dot.width / 2 + 'px';

      this.dirty = false;
    }

    this._repaintDeleteButton(dom.point);
  };

  /**
   * Show the item in the DOM (when not already visible). The items DOM will
   * be created when needed.
   */
  PointItem.prototype.show = function () {
    if (!this.displayed) {
      this.redraw();
    }
  };

  /**
   * Hide the item from the DOM (when visible)
   */
  PointItem.prototype.hide = function () {
    if (this.displayed) {
      if (this.dom.point.parentNode) {
        this.dom.point.parentNode.removeChild(this.dom.point);
      }

      this.displayed = false;
    }
  };

  /**
   * Reposition the item horizontally
   * @Override
   */
  PointItem.prototype.repositionX = function () {
    var start = this.conversion.toScreen(this.data.start);

    this.left = start - this.props.dot.width;

    // reposition point
    this.dom.point.style.left = this.left + 'px';
  };

  /**
   * Reposition the item vertically
   * @Override
   */
  PointItem.prototype.repositionY = function () {
    var orientation = this.options.orientation.item;
    var point = this.dom.point;

    if (orientation == 'top') {
      point.style.top = this.top + 'px';
    } else {
      point.style.top = this.parent.height - this.top - this.height + 'px';
    }
  };

  /**
   * Return the width of the item left from its start date
   * @return {number}
   */
  PointItem.prototype.getWidthLeft = function () {
    return this.props.dot.width;
  };

  /**
   * Return the width of the item right from  its start date
   * @return {number}
   */
  PointItem.prototype.getWidthRight = function () {
    return this.width - this.props.dot.width;
  };

  module.exports = PointItem;

/***/ },
/* 37 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Hammer = __webpack_require__(20);
  var Item = __webpack_require__(33);
  var BackgroundGroup = __webpack_require__(34);
  var RangeItem = __webpack_require__(32);

  /**
   * @constructor BackgroundItem
   * @extends Item
   * @param {Object} data             Object containing parameters start, end
   *                                  content, className.
   * @param {{toScreen: function, toTime: function}} conversion
   *                                  Conversion functions from time to screen and vice versa
   * @param {Object} [options]        Configuration options
   *                                  // TODO: describe options
   */
  // TODO: implement support for the BackgroundItem just having a start, then being displayed as a sort of an annotation
  function BackgroundItem(data, conversion, options) {
    this.props = {
      content: {
        width: 0
      }
    };
    this.overflow = false; // if contents can overflow (css styling), this flag is set to true

    // validate data
    if (data) {
      if (data.start == undefined) {
        throw new Error('Property "start" missing in item ' + data.id);
      }
      if (data.end == undefined) {
        throw new Error('Property "end" missing in item ' + data.id);
      }
    }

    Item.call(this, data, conversion, options);
  }

  BackgroundItem.prototype = new Item(null, null, null);

  BackgroundItem.prototype.baseClassName = 'vis-item vis-background';
  BackgroundItem.prototype.stack = false;

  /**
   * Check whether this item is visible inside given range
   * @returns {{start: Number, end: Number}} range with a timestamp for start and end
   * @returns {boolean} True if visible
   */
  BackgroundItem.prototype.isVisible = function (range) {
    // determine visibility
    return this.data.start < range.end && this.data.end > range.start;
  };

  /**
   * Repaint the item
   */
  BackgroundItem.prototype.redraw = function () {
    var dom = this.dom;
    if (!dom) {
      // create DOM
      this.dom = {};
      dom = this.dom;

      // background box
      dom.box = document.createElement('div');
      // className is updated in redraw()

      // frame box (to prevent the item contents from overflowing
      dom.frame = document.createElement('div');
      dom.frame.className = 'vis-item-overflow';
      dom.box.appendChild(dom.frame);

      // contents box
      dom.content = document.createElement('div');
      dom.content.className = 'vis-item-content';
      dom.frame.appendChild(dom.content);

      // Note: we do NOT attach this item as attribute to the DOM,
      //       such that background items cannot be selected
      //dom.box['timeline-item'] = this;

      this.dirty = true;
    }

    // append DOM to parent DOM
    if (!this.parent) {
      throw new Error('Cannot redraw item: no parent attached');
    }
    if (!dom.box.parentNode) {
      var background = this.parent.dom.background;
      if (!background) {
        throw new Error('Cannot redraw item: parent has no background container element');
      }
      background.appendChild(dom.box);
    }
    this.displayed = true;

    // Update DOM when item is marked dirty. An item is marked dirty when:
    // - the item is not yet rendered
    // - the item's data is changed
    // - the item is selected/deselected
    if (this.dirty) {
      this._updateContents(this.dom.content);
      this._updateTitle(this.dom.content);
      this._updateDataAttributes(this.dom.content);
      this._updateStyle(this.dom.box);

      // update class
      var className = (this.data.className ? ' ' + this.data.className : '') + (this.selected ? ' vis-selected' : '');
      dom.box.className = this.baseClassName + className;

      // determine from css whether this box has overflow
      this.overflow = window.getComputedStyle(dom.content).overflow !== 'hidden';

      // recalculate size
      this.props.content.width = this.dom.content.offsetWidth;
      this.height = 0; // set height zero, so this item will be ignored when stacking items

      this.dirty = false;
    }
  };

  /**
   * Show the item in the DOM (when not already visible). The items DOM will
   * be created when needed.
   */
  BackgroundItem.prototype.show = RangeItem.prototype.show;

  /**
   * Hide the item from the DOM (when visible)
   * @return {Boolean} changed
   */
  BackgroundItem.prototype.hide = RangeItem.prototype.hide;

  /**
   * Reposition the item horizontally
   * @Override
   */
  BackgroundItem.prototype.repositionX = RangeItem.prototype.repositionX;

  /**
   * Reposition the item vertically
   * @Override
   */
  BackgroundItem.prototype.repositionY = function (margin) {
    var onTop = this.options.orientation.item === 'top';
    this.dom.content.style.top = onTop ? '' : '0';
    this.dom.content.style.bottom = onTop ? '0' : '';
    var height;

    // special positioning for subgroups
    if (this.data.subgroup !== undefined) {
      // TODO: instead of calculating the top position of the subgroups here for every BackgroundItem, calculate the top of the subgroup once in Itemset

      var itemSubgroup = this.data.subgroup;
      var subgroups = this.parent.subgroups;
      var subgroupIndex = subgroups[itemSubgroup].index;
      // if the orientation is top, we need to take the difference in height into account.
      if (onTop == true) {
        // the first subgroup will have to account for the distance from the top to the first item.
        height = this.parent.subgroups[itemSubgroup].height + margin.item.vertical;
        height += subgroupIndex == 0 ? margin.axis - 0.5 * margin.item.vertical : 0;
        var newTop = this.parent.top;
        for (var subgroup in subgroups) {
          if (subgroups.hasOwnProperty(subgroup)) {
            if (subgroups[subgroup].visible == true && subgroups[subgroup].index < subgroupIndex) {
              newTop += subgroups[subgroup].height + margin.item.vertical;
            }
          }
        }

        // the others will have to be offset downwards with this same distance.
        newTop += subgroupIndex != 0 ? margin.axis - 0.5 * margin.item.vertical : 0;
        this.dom.box.style.top = newTop + 'px';
        this.dom.box.style.bottom = '';
      }
      // and when the orientation is bottom:
      else {
          var newTop = this.parent.top;
          var totalHeight = 0;
          for (var subgroup in subgroups) {
            if (subgroups.hasOwnProperty(subgroup)) {
              if (subgroups[subgroup].visible == true) {
                var newHeight = subgroups[subgroup].height + margin.item.vertical;
                totalHeight += newHeight;
                if (subgroups[subgroup].index > subgroupIndex) {
                  newTop += newHeight;
                }
              }
            }
          }
          height = this.parent.subgroups[itemSubgroup].height + margin.item.vertical;
          this.dom.box.style.top = this.parent.height - totalHeight + newTop + 'px';
          this.dom.box.style.bottom = '';
        }
    }
    // and in the case of no subgroups:
    else {
        // we want backgrounds with groups to only show in groups.
        if (this.parent instanceof BackgroundGroup) {
          // if the item is not in a group:
          height = Math.max(this.parent.height, this.parent.itemSet.body.domProps.center.height, this.parent.itemSet.body.domProps.centerContainer.height);
          this.dom.box.style.top = onTop ? '0' : '';
          this.dom.box.style.bottom = onTop ? '' : '0';
        } else {
          height = this.parent.height;
          // same alignment for items when orientation is top or bottom
          this.dom.box.style.top = this.parent.top + 'px';
          this.dom.box.style.bottom = '';
        }
      }
    this.dom.box.style.height = height + 'px';
  };

  module.exports = BackgroundItem;

/***/ },
/* 38 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var Component = __webpack_require__(25);
  var TimeStep = __webpack_require__(29);
  var DateUtil = __webpack_require__(26);
  var moment = __webpack_require__(2);

  /**
   * A horizontal time axis
   * @param {{dom: Object, domProps: Object, emitter: Emitter, range: Range}} body
   * @param {Object} [options]        See TimeAxis.setOptions for the available
   *                                  options.
   * @constructor TimeAxis
   * @extends Component
   */
  function TimeAxis(body, options) {
    this.dom = {
      foreground: null,
      lines: [],
      majorTexts: [],
      minorTexts: [],
      redundant: {
        lines: [],
        majorTexts: [],
        minorTexts: []
      }
    };
    this.props = {
      range: {
        start: 0,
        end: 0,
        minimumStep: 0
      },
      lineTop: 0
    };

    this.defaultOptions = {
      orientation: {
        axis: 'bottom'
      }, // axis orientation: 'top' or 'bottom'
      showMinorLabels: true,
      showMajorLabels: true,
      maxMinorChars: 7,
      format: TimeStep.FORMAT,
      moment: moment,
      timeAxis: null
    };
    this.options = util.extend({}, this.defaultOptions);

    this.body = body;

    // create the HTML DOM
    this._create();

    this.setOptions(options);
  }

  TimeAxis.prototype = new Component();

  /**
   * Set options for the TimeAxis.
   * Parameters will be merged in current options.
   * @param {Object} options  Available options:
   *                          {string} [orientation.axis]
   *                          {boolean} [showMinorLabels]
   *                          {boolean} [showMajorLabels]
   */
  TimeAxis.prototype.setOptions = function (options) {
    if (options) {
      // copy all options that we know
      util.selectiveExtend(['showMinorLabels', 'showMajorLabels', 'maxMinorChars', 'hiddenDates', 'timeAxis', 'moment'], this.options, options);

      // deep copy the format options
      util.selectiveDeepExtend(['format'], this.options, options);

      if ('orientation' in options) {
        if (typeof options.orientation === 'string') {
          this.options.orientation.axis = options.orientation;
        } else if (typeof options.orientation === 'object' && 'axis' in options.orientation) {
          this.options.orientation.axis = options.orientation.axis;
        }
      }

      // apply locale to moment.js
      // TODO: not so nice, this is applied globally to moment.js
      if ('locale' in options) {
        if (typeof moment.locale === 'function') {
          // moment.js 2.8.1+
          moment.locale(options.locale);
        } else {
          moment.lang(options.locale);
        }
      }
    }
  };

  /**
   * Create the HTML DOM for the TimeAxis
   */
  TimeAxis.prototype._create = function () {
    this.dom.foreground = document.createElement('div');
    this.dom.background = document.createElement('div');

    this.dom.foreground.className = 'vis-time-axis vis-foreground';
    this.dom.background.className = 'vis-time-axis vis-background';
  };

  /**
   * Destroy the TimeAxis
   */
  TimeAxis.prototype.destroy = function () {
    // remove from DOM
    if (this.dom.foreground.parentNode) {
      this.dom.foreground.parentNode.removeChild(this.dom.foreground);
    }
    if (this.dom.background.parentNode) {
      this.dom.background.parentNode.removeChild(this.dom.background);
    }

    this.body = null;
  };

  /**
   * Repaint the component
   * @return {boolean} Returns true if the component is resized
   */
  TimeAxis.prototype.redraw = function () {
    var props = this.props;
    var foreground = this.dom.foreground;
    var background = this.dom.background;

    // determine the correct parent DOM element (depending on option orientation)
    var parent = this.options.orientation.axis == 'top' ? this.body.dom.top : this.body.dom.bottom;
    var parentChanged = foreground.parentNode !== parent;

    // calculate character width and height
    this._calculateCharSize();

    // TODO: recalculate sizes only needed when parent is resized or options is changed
    var showMinorLabels = this.options.showMinorLabels && this.options.orientation.axis !== 'none';
    var showMajorLabels = this.options.showMajorLabels && this.options.orientation.axis !== 'none';

    // determine the width and height of the elemens for the axis
    props.minorLabelHeight = showMinorLabels ? props.minorCharHeight : 0;
    props.majorLabelHeight = showMajorLabels ? props.majorCharHeight : 0;
    props.height = props.minorLabelHeight + props.majorLabelHeight;
    props.width = foreground.offsetWidth;

    props.minorLineHeight = this.body.domProps.root.height - props.majorLabelHeight - (this.options.orientation.axis == 'top' ? this.body.domProps.bottom.height : this.body.domProps.top.height);
    props.minorLineWidth = 1; // TODO: really calculate width
    props.majorLineHeight = props.minorLineHeight + props.majorLabelHeight;
    props.majorLineWidth = 1; // TODO: really calculate width

    //  take foreground and background offline while updating (is almost twice as fast)
    var foregroundNextSibling = foreground.nextSibling;
    var backgroundNextSibling = background.nextSibling;
    foreground.parentNode && foreground.parentNode.removeChild(foreground);
    background.parentNode && background.parentNode.removeChild(background);

    foreground.style.height = this.props.height + 'px';

    this._repaintLabels();

    // put DOM online again (at the same place)
    if (foregroundNextSibling) {
      parent.insertBefore(foreground, foregroundNextSibling);
    } else {
      parent.appendChild(foreground);
    }
    if (backgroundNextSibling) {
      this.body.dom.backgroundVertical.insertBefore(background, backgroundNextSibling);
    } else {
      this.body.dom.backgroundVertical.appendChild(background);
    }

    return this._isResized() || parentChanged;
  };

  /**
   * Repaint major and minor text labels and vertical grid lines
   * @private
   */
  TimeAxis.prototype._repaintLabels = function () {
    var orientation = this.options.orientation.axis;

    // calculate range and step (step such that we have space for 7 characters per label)
    var start = util.convert(this.body.range.start, 'Number');
    var end = util.convert(this.body.range.end, 'Number');
    var timeLabelsize = this.body.util.toTime((this.props.minorCharWidth || 10) * this.options.maxMinorChars).valueOf();
    var minimumStep = timeLabelsize - DateUtil.getHiddenDurationBefore(this.options.moment, this.body.hiddenDates, this.body.range, timeLabelsize);
    minimumStep -= this.body.util.toTime(0).valueOf();

    var step = new TimeStep(new Date(start), new Date(end), minimumStep, this.body.hiddenDates);
    step.setMoment(this.options.moment);
    if (this.options.format) {
      step.setFormat(this.options.format);
    }
    if (this.options.timeAxis) {
      step.setScale(this.options.timeAxis);
    }
    this.step = step;

    // Move all DOM elements to a "redundant" list, where they
    // can be picked for re-use, and clear the lists with lines and texts.
    // At the end of the function _repaintLabels, left over elements will be cleaned up
    var dom = this.dom;
    dom.redundant.lines = dom.lines;
    dom.redundant.majorTexts = dom.majorTexts;
    dom.redundant.minorTexts = dom.minorTexts;
    dom.lines = [];
    dom.majorTexts = [];
    dom.minorTexts = [];

    var current;
    var next;
    var x;
    var xNext;
    var isMajor, nextIsMajor;
    var width = 0,
        prevWidth;
    var line;
    var labelMinor;
    var xFirstMajorLabel = undefined;
    var count = 0;
    var MAX = 1000;
    var className;

    step.start();
    next = step.getCurrent();
    xNext = this.body.util.toScreen(next);
    while (step.hasNext() && count < MAX) {
      count++;

      isMajor = step.isMajor();
      className = step.getClassName();
      labelMinor = step.getLabelMinor();

      current = next;
      x = xNext;

      step.next();
      next = step.getCurrent();
      nextIsMajor = step.isMajor();
      xNext = this.body.util.toScreen(next);

      prevWidth = width;
      width = xNext - x;
      var showMinorGrid = width >= prevWidth * 0.4; // prevent displaying of the 31th of the month on a scale of 5 days

      if (this.options.showMinorLabels && showMinorGrid) {
        var label = this._repaintMinorText(x, labelMinor, orientation, className);
        label.style.width = width + 'px'; // set width to prevent overflow
      }

      if (isMajor && this.options.showMajorLabels) {
        if (x > 0) {
          if (xFirstMajorLabel == undefined) {
            xFirstMajorLabel = x;
          }
          label = this._repaintMajorText(x, step.getLabelMajor(), orientation, className);
        }
        line = this._repaintMajorLine(x, width, orientation, className);
      } else {
        // minor line
        if (showMinorGrid) {
          line = this._repaintMinorLine(x, width, orientation, className);
        } else {
          if (line) {
            // adjust the width of the previous grid
            line.style.width = parseInt(line.style.width) + width + 'px';
          }
        }
      }
    }

    if (count === MAX && !warnedForOverflow) {
      console.warn('Something is wrong with the Timeline scale. Limited drawing of grid lines to ' + MAX + ' lines.');
      warnedForOverflow = true;
    }

    // create a major label on the left when needed
    if (this.options.showMajorLabels) {
      var leftTime = this.body.util.toTime(0),
          leftText = step.getLabelMajor(leftTime),
          widthText = leftText.length * (this.props.majorCharWidth || 10) + 10; // upper bound estimation

      if (xFirstMajorLabel == undefined || widthText < xFirstMajorLabel) {
        this._repaintMajorText(0, leftText, orientation, className);
      }
    }

    // Cleanup leftover DOM elements from the redundant list
    util.forEach(this.dom.redundant, function (arr) {
      while (arr.length) {
        var elem = arr.pop();
        if (elem && elem.parentNode) {
          elem.parentNode.removeChild(elem);
        }
      }
    });
  };

  /**
   * Create a minor label for the axis at position x
   * @param {Number} x
   * @param {String} text
   * @param {String} orientation   "top" or "bottom" (default)
   * @param {String} className
   * @return {Element} Returns the HTML element of the created label
   * @private
   */
  TimeAxis.prototype._repaintMinorText = function (x, text, orientation, className) {
    // reuse redundant label
    var label = this.dom.redundant.minorTexts.shift();

    if (!label) {
      // create new label
      var content = document.createTextNode('');
      label = document.createElement('div');
      label.appendChild(content);
      this.dom.foreground.appendChild(label);
    }
    this.dom.minorTexts.push(label);

    label.childNodes[0].nodeValue = text;

    label.style.top = orientation == 'top' ? this.props.majorLabelHeight + 'px' : '0';
    label.style.left = x + 'px';
    label.className = 'vis-text vis-minor ' + className;
    //label.title = title;  // TODO: this is a heavy operation

    return label;
  };

  /**
   * Create a Major label for the axis at position x
   * @param {Number} x
   * @param {String} text
   * @param {String} orientation   "top" or "bottom" (default)
   * @param {String} className
   * @return {Element} Returns the HTML element of the created label
   * @private
   */
  TimeAxis.prototype._repaintMajorText = function (x, text, orientation, className) {
    // reuse redundant label
    var label = this.dom.redundant.majorTexts.shift();

    if (!label) {
      // create label
      var content = document.createTextNode(text);
      label = document.createElement('div');
      label.appendChild(content);
      this.dom.foreground.appendChild(label);
    }
    this.dom.majorTexts.push(label);

    label.childNodes[0].nodeValue = text;
    label.className = 'vis-text vis-major ' + className;
    //label.title = title; // TODO: this is a heavy operation

    label.style.top = orientation == 'top' ? '0' : this.props.minorLabelHeight + 'px';
    label.style.left = x + 'px';

    return label;
  };

  /**
   * Create a minor line for the axis at position x
   * @param {Number} x
   * @param {Number} width
   * @param {String} orientation   "top" or "bottom" (default)
   * @param {String} className
   * @return {Element} Returns the created line
   * @private
   */
  TimeAxis.prototype._repaintMinorLine = function (x, width, orientation, className) {
    // reuse redundant line
    var line = this.dom.redundant.lines.shift();
    if (!line) {
      // create vertical line
      line = document.createElement('div');
      this.dom.background.appendChild(line);
    }
    this.dom.lines.push(line);

    var props = this.props;
    if (orientation == 'top') {
      line.style.top = props.majorLabelHeight + 'px';
    } else {
      line.style.top = this.body.domProps.top.height + 'px';
    }
    line.style.height = props.minorLineHeight + 'px';
    line.style.left = x - props.minorLineWidth / 2 + 'px';
    line.style.width = width + 'px';

    line.className = 'vis-grid vis-vertical vis-minor ' + className;

    return line;
  };

  /**
   * Create a Major line for the axis at position x
   * @param {Number} x
   * @param {Number} width
   * @param {String} orientation   "top" or "bottom" (default)
   * @param {String} className
   * @return {Element} Returns the created line
   * @private
   */
  TimeAxis.prototype._repaintMajorLine = function (x, width, orientation, className) {
    // reuse redundant line
    var line = this.dom.redundant.lines.shift();
    if (!line) {
      // create vertical line
      line = document.createElement('div');
      this.dom.background.appendChild(line);
    }
    this.dom.lines.push(line);

    var props = this.props;
    if (orientation == 'top') {
      line.style.top = '0';
    } else {
      line.style.top = this.body.domProps.top.height + 'px';
    }
    line.style.left = x - props.majorLineWidth / 2 + 'px';
    line.style.height = props.majorLineHeight + 'px';
    line.style.width = width + 'px';

    line.className = 'vis-grid vis-vertical vis-major ' + className;

    return line;
  };

  /**
   * Determine the size of text on the axis (both major and minor axis).
   * The size is calculated only once and then cached in this.props.
   * @private
   */
  TimeAxis.prototype._calculateCharSize = function () {
    // Note: We calculate char size with every redraw. Size may change, for
    // example when any of the timelines parents had display:none for example.

    // determine the char width and height on the minor axis
    if (!this.dom.measureCharMinor) {
      this.dom.measureCharMinor = document.createElement('DIV');
      this.dom.measureCharMinor.className = 'vis-text vis-minor vis-measure';
      this.dom.measureCharMinor.style.position = 'absolute';

      this.dom.measureCharMinor.appendChild(document.createTextNode('0'));
      this.dom.foreground.appendChild(this.dom.measureCharMinor);
    }
    this.props.minorCharHeight = this.dom.measureCharMinor.clientHeight;
    this.props.minorCharWidth = this.dom.measureCharMinor.clientWidth;

    // determine the char width and height on the major axis
    if (!this.dom.measureCharMajor) {
      this.dom.measureCharMajor = document.createElement('DIV');
      this.dom.measureCharMajor.className = 'vis-text vis-major vis-measure';
      this.dom.measureCharMajor.style.position = 'absolute';

      this.dom.measureCharMajor.appendChild(document.createTextNode('0'));
      this.dom.foreground.appendChild(this.dom.measureCharMajor);
    }
    this.props.majorCharHeight = this.dom.measureCharMajor.clientHeight;
    this.props.majorCharWidth = this.dom.measureCharMajor.clientWidth;
  };

  var warnedForOverflow = false;

  module.exports = TimeAxis;

/***/ },
/* 39 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var keycharm = __webpack_require__(40);
  var Emitter = __webpack_require__(12);
  var Hammer = __webpack_require__(20);
  var util = __webpack_require__(1);

  /**
   * Turn an element into an clickToUse element.
   * When not active, the element has a transparent overlay. When the overlay is
   * clicked, the mode is changed to active.
   * When active, the element is displayed with a blue border around it, and
   * the interactive contents of the element can be used. When clicked outside
   * the element, the elements mode is changed to inactive.
   * @param {Element} container
   * @constructor
   */
  function Activator(container) {
    this.active = false;

    this.dom = {
      container: container
    };

    this.dom.overlay = document.createElement('div');
    this.dom.overlay.className = 'vis-overlay';

    this.dom.container.appendChild(this.dom.overlay);

    this.hammer = Hammer(this.dom.overlay);
    this.hammer.on('tap', this._onTapOverlay.bind(this));

    // block all touch events (except tap)
    var me = this;
    var events = ['tap', 'doubletap', 'press', 'pinch', 'pan', 'panstart', 'panmove', 'panend'];
    events.forEach(function (event) {
      me.hammer.on(event, function (event) {
        event.stopPropagation();
      });
    });

    // attach a click event to the window, in order to deactivate when clicking outside the timeline
    if (document && document.body) {
      this.onClick = function (event) {
        if (!_hasParent(event.target, container)) {
          me.deactivate();
        }
      };
      document.body.addEventListener('click', this.onClick);
    }

    if (this.keycharm !== undefined) {
      this.keycharm.destroy();
    }
    this.keycharm = keycharm();

    // keycharm listener only bounded when active)
    this.escListener = this.deactivate.bind(this);
  }

  // turn into an event emitter
  Emitter(Activator.prototype);

  // The currently active activator
  Activator.current = null;

  /**
   * Destroy the activator. Cleans up all created DOM and event listeners
   */
  Activator.prototype.destroy = function () {
    this.deactivate();

    // remove dom
    this.dom.overlay.parentNode.removeChild(this.dom.overlay);

    // remove global event listener
    if (this.onClick) {
      document.body.removeEventListener('click', this.onClick);
    }

    // cleanup hammer instances
    this.hammer.destroy();
    this.hammer = null;
    // FIXME: cleaning up hammer instances doesn't work (Timeline not removed from memory)
  };

  /**
   * Activate the element
   * Overlay is hidden, element is decorated with a blue shadow border
   */
  Activator.prototype.activate = function () {
    // we allow only one active activator at a time
    if (Activator.current) {
      Activator.current.deactivate();
    }
    Activator.current = this;

    this.active = true;
    this.dom.overlay.style.display = 'none';
    util.addClassName(this.dom.container, 'vis-active');

    this.emit('change');
    this.emit('activate');

    // ugly hack: bind ESC after emitting the events, as the Network rebinds all
    // keyboard events on a 'change' event
    this.keycharm.bind('esc', this.escListener);
  };

  /**
   * Deactivate the element
   * Overlay is displayed on top of the element
   */
  Activator.prototype.deactivate = function () {
    this.active = false;
    this.dom.overlay.style.display = '';
    util.removeClassName(this.dom.container, 'vis-active');
    this.keycharm.unbind('esc', this.escListener);

    this.emit('change');
    this.emit('deactivate');
  };

  /**
   * Handle a tap event: activate the container
   * @param event
   * @private
   */
  Activator.prototype._onTapOverlay = function (event) {
    // activate the container
    this.activate();
    event.stopPropagation();
  };

  /**
   * Test whether the element has the requested parent element somewhere in
   * its chain of parent nodes.
   * @param {HTMLElement} element
   * @param {HTMLElement} parent
   * @returns {boolean} Returns true when the parent is found somewhere in the
   *                    chain of parent nodes.
   * @private
   */
  function _hasParent(element, parent) {
    while (element) {
      if (element === parent) {
        return true;
      }
      element = element.parentNode;
    }
    return false;
  }

  module.exports = Activator;

/***/ },
/* 40 */
/***/ function(module, exports, __webpack_require__) {

  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;"use strict";
  /**
   * Created by Alex on 11/6/2014.
   */

  // https://github.com/umdjs/umd/blob/master/returnExports.js#L40-L60
  // if the module has no dependencies, the above pattern can be simplified to
  (function (root, factory) {
    if (true) {
      // AMD. Register as an anonymous module.
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory), __WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ? (__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports === 'object') {
      // Node. Does not work with strict CommonJS, but
      // only CommonJS-like environments that support module.exports,
      // like Node.
      module.exports = factory();
    } else {
      // Browser globals (root is window)
      root.keycharm = factory();
    }
  }(this, function () {

    function keycharm(options) {
      var preventDefault = options && options.preventDefault || false;

      var container = options && options.container || window;

      var _exportFunctions = {};
      var _bound = {keydown:{}, keyup:{}};
      var _keys = {};
      var i;

      // a - z
      for (i = 97; i <= 122; i++) {_keys[String.fromCharCode(i)] = {code:65 + (i - 97), shift: false};}
      // A - Z
      for (i = 65; i <= 90; i++) {_keys[String.fromCharCode(i)] = {code:i, shift: true};}
      // 0 - 9
      for (i = 0;  i <= 9;   i++) {_keys['' + i] = {code:48 + i, shift: false};}
      // F1 - F12
      for (i = 1;  i <= 12;   i++) {_keys['F' + i] = {code:111 + i, shift: false};}
      // num0 - num9
      for (i = 0;  i <= 9;   i++) {_keys['num' + i] = {code:96 + i, shift: false};}

      // numpad misc
      _keys['num*'] = {code:106, shift: false};
      _keys['num+'] = {code:107, shift: false};
      _keys['num-'] = {code:109, shift: false};
      _keys['num/'] = {code:111, shift: false};
      _keys['num.'] = {code:110, shift: false};
      // arrows
      _keys['left']  = {code:37, shift: false};
      _keys['up']    = {code:38, shift: false};
      _keys['right'] = {code:39, shift: false};
      _keys['down']  = {code:40, shift: false};
      // extra keys
      _keys['space'] = {code:32, shift: false};
      _keys['enter'] = {code:13, shift: false};
      _keys['shift'] = {code:16, shift: undefined};
      _keys['esc']   = {code:27, shift: false};
      _keys['backspace'] = {code:8, shift: false};
      _keys['tab']       = {code:9, shift: false};
      _keys['ctrl']      = {code:17, shift: false};
      _keys['alt']       = {code:18, shift: false};
      _keys['delete']    = {code:46, shift: false};
      _keys['pageup']    = {code:33, shift: false};
      _keys['pagedown']  = {code:34, shift: false};
      // symbols
      _keys['=']     = {code:187, shift: false};
      _keys['-']     = {code:189, shift: false};
      _keys[']']     = {code:221, shift: false};
      _keys['[']     = {code:219, shift: false};



      var down = function(event) {handleEvent(event,'keydown');};
      var up = function(event) {handleEvent(event,'keyup');};

      // handle the actualy bound key with the event
      var handleEvent = function(event,type) {
        if (_bound[type][event.keyCode] !== undefined) {
          var bound = _bound[type][event.keyCode];
          for (var i = 0; i < bound.length; i++) {
            if (bound[i].shift === undefined) {
              bound[i].fn(event);
            }
            else if (bound[i].shift == true && event.shiftKey == true) {
              bound[i].fn(event);
            }
            else if (bound[i].shift == false && event.shiftKey == false) {
              bound[i].fn(event);
            }
          }

          if (preventDefault == true) {
            event.preventDefault();
          }
        }
      };

      // bind a key to a callback
      _exportFunctions.bind = function(key, callback, type) {
        if (type === undefined) {
          type = 'keydown';
        }
        if (_keys[key] === undefined) {
          throw new Error("unsupported key: " + key);
        }
        if (_bound[type][_keys[key].code] === undefined) {
          _bound[type][_keys[key].code] = [];
        }
        _bound[type][_keys[key].code].push({fn:callback, shift:_keys[key].shift});
      };


      // bind all keys to a call back (demo purposes)
      _exportFunctions.bindAll = function(callback, type) {
        if (type === undefined) {
          type = 'keydown';
        }
        for (var key in _keys) {
          if (_keys.hasOwnProperty(key)) {
            _exportFunctions.bind(key,callback,type);
          }
        }
      };

      // get the key label from an event
      _exportFunctions.getKey = function(event) {
        for (var key in _keys) {
          if (_keys.hasOwnProperty(key)) {
            if (event.shiftKey == true && _keys[key].shift == true && event.keyCode == _keys[key].code) {
              return key;
            }
            else if (event.shiftKey == false && _keys[key].shift == false && event.keyCode == _keys[key].code) {
              return key;
            }
            else if (event.keyCode == _keys[key].code && key == 'shift') {
              return key;
            }
          }
        }
        return "unknown key, currently not supported";
      };

      // unbind either a specific callback from a key or all of them (by leaving callback undefined)
      _exportFunctions.unbind = function(key, callback, type) {
        if (type === undefined) {
          type = 'keydown';
        }
        if (_keys[key] === undefined) {
          throw new Error("unsupported key: " + key);
        }
        if (callback !== undefined) {
          var newBindings = [];
          var bound = _bound[type][_keys[key].code];
          if (bound !== undefined) {
            for (var i = 0; i < bound.length; i++) {
              if (!(bound[i].fn == callback && bound[i].shift == _keys[key].shift)) {
                newBindings.push(_bound[type][_keys[key].code][i]);
              }
            }
          }
          _bound[type][_keys[key].code] = newBindings;
        }
        else {
          _bound[type][_keys[key].code] = [];
        }
      };

      // reset all bound variables.
      _exportFunctions.reset = function() {
        _bound = {keydown:{}, keyup:{}};
      };

      // unbind all listeners and reset all variables.
      _exportFunctions.destroy = function() {
        _bound = {keydown:{}, keyup:{}};
        container.removeEventListener('keydown', down, true);
        container.removeEventListener('keyup', up, true);
      };

      // create listeners.
      container.addEventListener('keydown',down,true);
      container.addEventListener('keyup',up,true);

      // return the public functions.
      return _exportFunctions;
    }

    return keycharm;
  }));




/***/ },
/* 41 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Hammer = __webpack_require__(20);
  var util = __webpack_require__(1);
  var Component = __webpack_require__(25);
  var moment = __webpack_require__(2);
  var locales = __webpack_require__(42);

  /**
   * A custom time bar
   * @param {{range: Range, dom: Object}} body
   * @param {Object} [options]        Available parameters:
   *                                  {number | string} id
   *                                  {string} locales
   *                                  {string} locale
   * @constructor CustomTime
   * @extends Component
   */

  function CustomTime(body, options) {
    this.body = body;

    // default options
    this.defaultOptions = {
      moment: moment,
      locales: locales,
      locale: 'en',
      id: undefined,
      title: undefined
    };
    this.options = util.extend({}, this.defaultOptions);

    if (options && options.time) {
      this.customTime = options.time;
    } else {
      this.customTime = new Date();
    }

    this.eventParams = {}; // stores state parameters while dragging the bar

    this.setOptions(options);

    // create the DOM
    this._create();
  }

  CustomTime.prototype = new Component();

  /**
   * Set options for the component. Options will be merged in current options.
   * @param {Object} options  Available parameters:
   *                                  {number | string} id
   *                                  {string} locales
   *                                  {string} locale
   */
  CustomTime.prototype.setOptions = function (options) {
    if (options) {
      // copy all options that we know
      util.selectiveExtend(['moment', 'locale', 'locales', 'id'], this.options, options);
    }
  };

  /**
   * Create the DOM for the custom time
   * @private
   */
  CustomTime.prototype._create = function () {
    var bar = document.createElement('div');
    bar['custom-time'] = this;
    bar.className = 'vis-custom-time ' + (this.options.id || '');
    bar.style.position = 'absolute';
    bar.style.top = '0px';
    bar.style.height = '100%';
    this.bar = bar;

    var drag = document.createElement('div');
    drag.style.position = 'relative';
    drag.style.top = '0px';
    drag.style.left = '-10px';
    drag.style.height = '100%';
    drag.style.width = '20px';
    bar.appendChild(drag);

    // attach event listeners
    this.hammer = new Hammer(drag);
    this.hammer.on('panstart', this._onDragStart.bind(this));
    this.hammer.on('panmove', this._onDrag.bind(this));
    this.hammer.on('panend', this._onDragEnd.bind(this));
    this.hammer.get('pan').set({ threshold: 5, direction: 30 }); // 30 is ALL_DIRECTIONS in hammer.
  };

  /**
   * Destroy the CustomTime bar
   */
  CustomTime.prototype.destroy = function () {
    this.hide();

    this.hammer.destroy();
    this.hammer = null;

    this.body = null;
  };

  /**
   * Repaint the component
   * @return {boolean} Returns true if the component is resized
   */
  CustomTime.prototype.redraw = function () {
    var parent = this.body.dom.backgroundVertical;
    if (this.bar.parentNode != parent) {
      // attach to the dom
      if (this.bar.parentNode) {
        this.bar.parentNode.removeChild(this.bar);
      }
      parent.appendChild(this.bar);
    }

    var x = this.body.util.toScreen(this.customTime);

    var locale = this.options.locales[this.options.locale];
    if (!locale) {
      if (!this.warned) {
        console.log('WARNING: options.locales[\'' + this.options.locale + '\'] not found. See http://visjs.org/docs/timeline.html#Localization');
        this.warned = true;
      }
      locale = this.options.locales['en']; // fall back on english when not available
    }

    var title = this.options.title;
    // To hide the title completely use empty string ''.
    if (title === undefined) {
      title = locale.time + ': ' + this.options.moment(this.customTime).format('dddd, MMMM Do YYYY, H:mm:ss');
      title = title.charAt(0).toUpperCase() + title.substring(1);
    }

    this.bar.style.left = x + 'px';
    this.bar.title = title;

    return false;
  };

  /**
   * Remove the CustomTime from the DOM
   */
  CustomTime.prototype.hide = function () {
    // remove the line from the DOM
    if (this.bar.parentNode) {
      this.bar.parentNode.removeChild(this.bar);
    }
  };

  /**
   * Set custom time.
   * @param {Date | number | string} time
   */
  CustomTime.prototype.setCustomTime = function (time) {
    this.customTime = util.convert(time, 'Date');
    this.redraw();
  };

  /**
   * Retrieve the current custom time.
   * @return {Date} customTime
   */
  CustomTime.prototype.getCustomTime = function () {
    return new Date(this.customTime.valueOf());
  };

  /**
    * Set custom title.
    * @param {Date | number | string} title
    */
  CustomTime.prototype.setCustomTitle = function (title) {
    this.options.title = title;
  };

  /**
   * Start moving horizontally
   * @param {Event} event
   * @private
   */
  CustomTime.prototype._onDragStart = function (event) {
    this.eventParams.dragging = true;
    this.eventParams.customTime = this.customTime;

    event.stopPropagation();
  };

  /**
   * Perform moving operating.
   * @param {Event} event
   * @private
   */
  CustomTime.prototype._onDrag = function (event) {
    if (!this.eventParams.dragging) return;

    var x = this.body.util.toScreen(this.eventParams.customTime) + event.deltaX;
    var time = this.body.util.toTime(x);

    this.setCustomTime(time);

    // fire a timechange event
    this.body.emitter.emit('timechange', {
      id: this.options.id,
      time: new Date(this.customTime.valueOf())
    });

    event.stopPropagation();
  };

  /**
   * Stop moving operating.
   * @param {Event} event
   * @private
   */
  CustomTime.prototype._onDragEnd = function (event) {
    if (!this.eventParams.dragging) return;

    // fire a timechanged event
    this.body.emitter.emit('timechanged', {
      id: this.options.id,
      time: new Date(this.customTime.valueOf())
    });

    event.stopPropagation();
  };

  /**
   * Find a custom time from an event target:
   * searches for the attribute 'custom-time' in the event target's element tree
   * @param {Event} event
   * @return {CustomTime | null} customTime
   */
  CustomTime.customTimeFromTarget = function (event) {
    var target = event.target;
    while (target) {
      if (target.hasOwnProperty('custom-time')) {
        return target['custom-time'];
      }
      target = target.parentNode;
    }

    return null;
  };

  module.exports = CustomTime;

/***/ },
/* 42 */
/***/ function(module, exports) {

  // English
  'use strict';

  exports['en'] = {
    current: 'current',
    time: 'time'
  };
  exports['en_EN'] = exports['en'];
  exports['en_US'] = exports['en'];

  // Dutch
  exports['nl'] = {
    current: 'huidige',
    time: 'tijd'
  };
  exports['nl_NL'] = exports['nl'];
  exports['nl_BE'] = exports['nl'];

/***/ },
/* 43 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var Component = __webpack_require__(25);
  var moment = __webpack_require__(2);
  var locales = __webpack_require__(42);

  /**
   * A current time bar
   * @param {{range: Range, dom: Object, domProps: Object}} body
   * @param {Object} [options]        Available parameters:
   *                                  {Boolean} [showCurrentTime]
   * @constructor CurrentTime
   * @extends Component
   */
  function CurrentTime(body, options) {
    this.body = body;

    // default options
    this.defaultOptions = {
      showCurrentTime: true,

      moment: moment,
      locales: locales,
      locale: 'en'
    };
    this.options = util.extend({}, this.defaultOptions);
    this.offset = 0;

    this._create();

    this.setOptions(options);
  }

  CurrentTime.prototype = new Component();

  /**
   * Create the HTML DOM for the current time bar
   * @private
   */
  CurrentTime.prototype._create = function () {
    var bar = document.createElement('div');
    bar.className = 'vis-current-time';
    bar.style.position = 'absolute';
    bar.style.top = '0px';
    bar.style.height = '100%';

    this.bar = bar;
  };

  /**
   * Destroy the CurrentTime bar
   */
  CurrentTime.prototype.destroy = function () {
    this.options.showCurrentTime = false;
    this.redraw(); // will remove the bar from the DOM and stop refreshing

    this.body = null;
  };

  /**
   * Set options for the component. Options will be merged in current options.
   * @param {Object} options  Available parameters:
   *                          {boolean} [showCurrentTime]
   */
  CurrentTime.prototype.setOptions = function (options) {
    if (options) {
      // copy all options that we know
      util.selectiveExtend(['showCurrentTime', 'moment', 'locale', 'locales'], this.options, options);
    }
  };

  /**
   * Repaint the component
   * @return {boolean} Returns true if the component is resized
   */
  CurrentTime.prototype.redraw = function () {
    if (this.options.showCurrentTime) {
      var parent = this.body.dom.backgroundVertical;
      if (this.bar.parentNode != parent) {
        // attach to the dom
        if (this.bar.parentNode) {
          this.bar.parentNode.removeChild(this.bar);
        }
        parent.appendChild(this.bar);

        this.start();
      }

      var now = this.options.moment(new Date().valueOf() + this.offset);
      var x = this.body.util.toScreen(now);

      var locale = this.options.locales[this.options.locale];
      if (!locale) {
        if (!this.warned) {
          console.log('WARNING: options.locales[\'' + this.options.locale + '\'] not found. See http://visjs.org/docs/timeline/#Localization');
          this.warned = true;
        }
        locale = this.options.locales['en']; // fall back on english when not available
      }
      var title = locale.current + ' ' + locale.time + ': ' + now.format('dddd, MMMM Do YYYY, H:mm:ss');
      title = title.charAt(0).toUpperCase() + title.substring(1);

      this.bar.style.left = x + 'px';
      this.bar.title = title;
    } else {
      // remove the line from the DOM
      if (this.bar.parentNode) {
        this.bar.parentNode.removeChild(this.bar);
      }
      this.stop();
    }

    return false;
  };

  /**
   * Start auto refreshing the current time bar
   */
  CurrentTime.prototype.start = function () {
    var me = this;

    function update() {
      me.stop();

      // determine interval to refresh
      var scale = me.body.range.conversion(me.body.domProps.center.width).scale;
      var interval = 1 / scale / 10;
      if (interval < 30) interval = 30;
      if (interval > 1000) interval = 1000;

      me.redraw();

      // start a renderTimer to adjust for the new time
      me.currentTimeTimer = setTimeout(update, interval);
    }

    update();
  };

  /**
   * Stop auto refreshing the current time bar
   */
  CurrentTime.prototype.stop = function () {
    if (this.currentTimeTimer !== undefined) {
      clearTimeout(this.currentTimeTimer);
      delete this.currentTimeTimer;
    }
  };

  /**
   * Set a current time. This can be used for example to ensure that a client's
   * time is synchronized with a shared server time.
   * @param {Date | String | Number} time     A Date, unix timestamp, or
   *                                          ISO date string.
   */
  CurrentTime.prototype.setCurrentTime = function (time) {
    var t = util.convert(time, 'Date').valueOf();
    var now = new Date().valueOf();
    this.offset = t - now;
    this.redraw();
  };

  /**
   * Get the current time.
   * @return {Date} Returns the current time.
   */
  CurrentTime.prototype.getCurrentTime = function () {
    return new Date(new Date().valueOf() + this.offset);
  };

  module.exports = CurrentTime;

/***/ },
/* 44 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _ColorPicker = __webpack_require__(45);

  var _ColorPicker2 = _interopRequireDefault(_ColorPicker);

  /**
   * The way this works is for all properties of this.possible options, you can supply the property name in any form to list the options.
   * Boolean options are recognised as Boolean
   * Number options should be written as array: [default value, min value, max value, stepsize]
   * Colors should be written as array: ['color', '#ffffff']
   * Strings with should be written as array: [option1, option2, option3, ..]
   *
   * The options are matched with their counterparts in each of the modules and the values used in the configuration are
   *
   * @param parentModule        | the location where parentModule.setOptions() can be called
   * @param defaultContainer    | the default container of the module
   * @param configureOptions    | the fully configured and predefined options set found in allOptions.js
   * @param pixelRatio          | canvas pixel ratio
   */
  var util = __webpack_require__(1);

  var Configurator = (function () {
    function Configurator(parentModule, defaultContainer, configureOptions) {
      var pixelRatio = arguments.length <= 3 || arguments[3] === undefined ? 1 : arguments[3];

      _classCallCheck(this, Configurator);

      this.parent = parentModule;
      this.changedOptions = [];
      this.container = defaultContainer;
      this.allowCreation = false;

      this.options = {};
      this.initialized = false;
      this.popupCounter = 0;
      this.defaultOptions = {
        enabled: false,
        filter: true,
        container: undefined,
        showButton: true
      };
      util.extend(this.options, this.defaultOptions);

      this.configureOptions = configureOptions;
      this.moduleOptions = {};
      this.domElements = [];
      this.popupDiv = {};
      this.popupLimit = 5;
      this.popupHistory = {};
      this.colorPicker = new _ColorPicker2['default'](pixelRatio);
      this.wrapper = undefined;
    }

    /**
     * refresh all options.
     * Because all modules parse their options by themselves, we just use their options. We copy them here.
     *
     * @param options
     */

    _createClass(Configurator, [{
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          // reset the popup history because the indices may have been changed.
          this.popupHistory = {};
          this._removePopup();

          var enabled = true;
          if (typeof options === 'string') {
            this.options.filter = options;
          } else if (options instanceof Array) {
            this.options.filter = options.join();
          } else if (typeof options === 'object') {
            if (options.container !== undefined) {
              this.options.container = options.container;
            }
            if (options.filter !== undefined) {
              this.options.filter = options.filter;
            }
            if (options.showButton !== undefined) {
              this.options.showButton = options.showButton;
            }
            if (options.enabled !== undefined) {
              enabled = options.enabled;
            }
          } else if (typeof options === 'boolean') {
            this.options.filter = true;
            enabled = options;
          } else if (typeof options === 'function') {
            this.options.filter = options;
            enabled = true;
          }
          if (this.options.filter === false) {
            enabled = false;
          }

          this.options.enabled = enabled;
        }
        this._clean();
      }
    }, {
      key: 'setModuleOptions',
      value: function setModuleOptions(moduleOptions) {
        this.moduleOptions = moduleOptions;
        if (this.options.enabled === true) {
          this._clean();
          if (this.options.container !== undefined) {
            this.container = this.options.container;
          }
          this._create();
        }
      }

      /**
       * Create all DOM elements
       * @private
       */
    }, {
      key: '_create',
      value: function _create() {
        var _this = this;

        this._clean();
        this.changedOptions = [];

        var filter = this.options.filter;
        var counter = 0;
        var show = false;
        for (var option in this.configureOptions) {
          if (this.configureOptions.hasOwnProperty(option)) {
            this.allowCreation = false;
            show = false;
            if (typeof filter === 'function') {
              show = filter(option, []);
              show = show || this._handleObject(this.configureOptions[option], [option], true);
            } else if (filter === true || filter.indexOf(option) !== -1) {
              show = true;
            }

            if (show !== false) {
              this.allowCreation = true;

              // linebreak between categories
              if (counter > 0) {
                this._makeItem([]);
              }
              // a header for the category
              this._makeHeader(option);

              // get the sub options
              this._handleObject(this.configureOptions[option], [option]);
            }
            counter++;
          }
        }

        if (this.options.showButton === true) {
          (function () {
            var generateButton = document.createElement('div');
            generateButton.className = 'vis-configuration vis-config-button';
            generateButton.innerHTML = 'generate options';
            generateButton.onclick = function () {
              _this._printOptions();
            };
            generateButton.onmouseover = function () {
              generateButton.className = 'vis-configuration vis-config-button hover';
            };
            generateButton.onmouseout = function () {
              generateButton.className = 'vis-configuration vis-config-button';
            };

            _this.optionsContainer = document.createElement('div');
            _this.optionsContainer.className = 'vis-configuration vis-config-option-container';

            _this.domElements.push(_this.optionsContainer);
            _this.domElements.push(generateButton);
          })();
        }

        this._push();
        //~ this.colorPicker.insertTo(this.container);
      }

      /**
       * draw all DOM elements on the screen
       * @private
       */
    }, {
      key: '_push',
      value: function _push() {
        this.wrapper = document.createElement('div');
        this.wrapper.className = 'vis-configuration-wrapper';
        this.container.appendChild(this.wrapper);
        for (var i = 0; i < this.domElements.length; i++) {
          this.wrapper.appendChild(this.domElements[i]);
        }

        this._showPopupIfNeeded();
      }

      /**
       * delete all DOM elements
       * @private
       */
    }, {
      key: '_clean',
      value: function _clean() {
        for (var i = 0; i < this.domElements.length; i++) {
          this.wrapper.removeChild(this.domElements[i]);
        }

        if (this.wrapper !== undefined) {
          this.container.removeChild(this.wrapper);
          this.wrapper = undefined;
        }
        this.domElements = [];

        this._removePopup();
      }

      /**
       * get the value from the actualOptions if it exists
       * @param {array} path    | where to look for the actual option
       * @returns {*}
       * @private
       */
    }, {
      key: '_getValue',
      value: function _getValue(path) {
        var base = this.moduleOptions;
        for (var i = 0; i < path.length; i++) {
          if (base[path[i]] !== undefined) {
            base = base[path[i]];
          } else {
            base = undefined;
            break;
          }
        }
        return base;
      }

      /**
       * all option elements are wrapped in an item
       * @param path
       * @param domElements
       * @private
       */
    }, {
      key: '_makeItem',
      value: function _makeItem(path) {
        var _arguments = arguments,
            _this2 = this;

        if (this.allowCreation === true) {
          var _len, domElements, _key;

          var _ret2 = (function () {
            var item = document.createElement('div');
            item.className = 'vis-configuration vis-config-item vis-config-s' + path.length;

            for (_len = _arguments.length, domElements = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
              domElements[_key - 1] = _arguments[_key];
            }

            domElements.forEach(function (element) {
              item.appendChild(element);
            });
            _this2.domElements.push(item);
            return {
              v: _this2.domElements.length
            };
          })();

          if (typeof _ret2 === 'object') return _ret2.v;
        }
        return 0;
      }

      /**
       * header for major subjects
       * @param name
       * @private
       */
    }, {
      key: '_makeHeader',
      value: function _makeHeader(name) {
        var div = document.createElement('div');
        div.className = 'vis-configuration vis-config-header';
        div.innerHTML = name;
        this._makeItem([], div);
      }

      /**
       * make a label, if it is an object label, it gets different styling.
       * @param name
       * @param path
       * @param objectLabel
       * @returns {HTMLElement}
       * @private
       */
    }, {
      key: '_makeLabel',
      value: function _makeLabel(name, path) {
        var objectLabel = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

        var div = document.createElement('div');
        div.className = 'vis-configuration vis-config-label vis-config-s' + path.length;
        if (objectLabel === true) {
          div.innerHTML = '<i><b>' + name + ':</b></i>';
        } else {
          div.innerHTML = name + ':';
        }
        return div;
      }

      /**
       * make a dropdown list for multiple possible string optoins
       * @param arr
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_makeDropdown',
      value: function _makeDropdown(arr, value, path) {
        var select = document.createElement('select');
        select.className = 'vis-configuration vis-config-select';
        var selectedValue = 0;
        if (value !== undefined) {
          if (arr.indexOf(value) !== -1) {
            selectedValue = arr.indexOf(value);
          }
        }

        for (var i = 0; i < arr.length; i++) {
          var option = document.createElement('option');
          option.value = arr[i];
          if (i === selectedValue) {
            option.selected = 'selected';
          }
          option.innerHTML = arr[i];
          select.appendChild(option);
        }

        var me = this;
        select.onchange = function () {
          me._update(this.value, path);
        };

        var label = this._makeLabel(path[path.length - 1], path);
        this._makeItem(path, label, select);
      }

      /**
       * make a range object for numeric options
       * @param arr
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_makeRange',
      value: function _makeRange(arr, value, path) {
        var defaultValue = arr[0];
        var min = arr[1];
        var max = arr[2];
        var step = arr[3];
        var range = document.createElement('input');
        range.className = 'vis-configuration vis-config-range';
        try {
          range.type = 'range'; // not supported on IE9
          range.min = min;
          range.max = max;
        } catch (err) {}
        range.step = step;

        // set up the popup settings in case they are needed.
        var popupString = '';
        var popupValue = 0;

        if (value !== undefined) {
          var factor = 1.20;
          if (value < 0 && value * factor < min) {
            range.min = Math.ceil(value * factor);
            popupValue = range.min;
            popupString = 'range increased';
          } else if (value / factor < min) {
            range.min = Math.ceil(value / factor);
            popupValue = range.min;
            popupString = 'range increased';
          }
          if (value * factor > max && max !== 1) {
            range.max = Math.ceil(value * factor);
            popupValue = range.max;
            popupString = 'range increased';
          }
          range.value = value;
        } else {
          range.value = defaultValue;
        }

        var input = document.createElement('input');
        input.className = 'vis-configuration vis-config-rangeinput';
        input.value = range.value;

        var me = this;
        range.onchange = function () {
          input.value = this.value;me._update(Number(this.value), path);
        };
        range.oninput = function () {
          input.value = this.value;
        };

        var label = this._makeLabel(path[path.length - 1], path);
        var itemIndex = this._makeItem(path, label, range, input);

        // if a popup is needed AND it has not been shown for this value, show it.
        if (popupString !== '' && this.popupHistory[itemIndex] !== popupValue) {
          this.popupHistory[itemIndex] = popupValue;
          this._setupPopup(popupString, itemIndex);
        }
      }

      /**
       * prepare the popup
       * @param string
       * @param index
       * @private
       */
    }, {
      key: '_setupPopup',
      value: function _setupPopup(string, index) {
        var _this3 = this;

        if (this.initialized === true && this.allowCreation === true && this.popupCounter < this.popupLimit) {
          var div = document.createElement("div");
          div.id = "vis-configuration-popup";
          div.className = "vis-configuration-popup";
          div.innerHTML = string;
          div.onclick = function () {
            _this3._removePopup();
          };
          this.popupCounter += 1;
          this.popupDiv = { html: div, index: index };
        }
      }

      /**
       * remove the popup from the dom
       * @private
       */
    }, {
      key: '_removePopup',
      value: function _removePopup() {
        if (this.popupDiv.html !== undefined) {
          this.popupDiv.html.parentNode.removeChild(this.popupDiv.html);
          clearTimeout(this.popupDiv.hideTimeout);
          clearTimeout(this.popupDiv.deleteTimeout);
          this.popupDiv = {};
        }
      }

      /**
       * Show the popup if it is needed.
       * @private
       */
    }, {
      key: '_showPopupIfNeeded',
      value: function _showPopupIfNeeded() {
        var _this4 = this;

        if (this.popupDiv.html !== undefined) {
          var correspondingElement = this.domElements[this.popupDiv.index];
          var rect = correspondingElement.getBoundingClientRect();
          this.popupDiv.html.style.left = rect.left + "px";
          this.popupDiv.html.style.top = rect.top - 30 + "px"; // 30 is the height;
          document.body.appendChild(this.popupDiv.html);
          this.popupDiv.hideTimeout = setTimeout(function () {
            _this4.popupDiv.html.style.opacity = 0;
          }, 1500);
          this.popupDiv.deleteTimeout = setTimeout(function () {
            _this4._removePopup();
          }, 1800);
        }
      }

      /**
       * make a checkbox for boolean options.
       * @param defaultValue
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_makeCheckbox',
      value: function _makeCheckbox(defaultValue, value, path) {
        var checkbox = document.createElement('input');
        checkbox.type = 'checkbox';
        checkbox.className = 'vis-configuration vis-config-checkbox';
        checkbox.checked = defaultValue;
        if (value !== undefined) {
          checkbox.checked = value;
          if (value !== defaultValue) {
            if (typeof defaultValue === 'object') {
              if (value !== defaultValue.enabled) {
                this.changedOptions.push({ path: path, value: value });
              }
            } else {
              this.changedOptions.push({ path: path, value: value });
            }
          }
        }

        var me = this;
        checkbox.onchange = function () {
          me._update(this.checked, path);
        };

        var label = this._makeLabel(path[path.length - 1], path);
        this._makeItem(path, label, checkbox);
      }

      /**
       * make a text input field for string options.
       * @param defaultValue
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_makeTextInput',
      value: function _makeTextInput(defaultValue, value, path) {
        var checkbox = document.createElement('input');
        checkbox.type = 'text';
        checkbox.className = 'vis-configuration vis-config-text';
        checkbox.value = value;
        if (value !== defaultValue) {
          this.changedOptions.push({ path: path, value: value });
        }

        var me = this;
        checkbox.onchange = function () {
          me._update(this.value, path);
        };

        var label = this._makeLabel(path[path.length - 1], path);
        this._makeItem(path, label, checkbox);
      }

      /**
       * make a color field with a color picker for color fields
       * @param arr
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_makeColorField',
      value: function _makeColorField(arr, value, path) {
        var _this5 = this;

        var defaultColor = arr[1];
        var div = document.createElement('div');
        value = value === undefined ? defaultColor : value;

        if (value !== 'none') {
          div.className = 'vis-configuration vis-config-colorBlock';
          div.style.backgroundColor = value;
        } else {
          div.className = 'vis-configuration vis-config-colorBlock none';
        }

        value = value === undefined ? defaultColor : value;
        div.onclick = function () {
          _this5._showColorPicker(value, div, path);
        };

        var label = this._makeLabel(path[path.length - 1], path);
        this._makeItem(path, label, div);
      }

      /**
       * used by the color buttons to call the color picker.
       * @param event
       * @param value
       * @param div
       * @param path
       * @private
       */
    }, {
      key: '_showColorPicker',
      value: function _showColorPicker(value, div, path) {
        var _this6 = this;

        // clear the callback from this div
        div.onclick = function () {};

        this.colorPicker.insertTo(div);
        this.colorPicker.show();

        this.colorPicker.setColor(value);
        this.colorPicker.setUpdateCallback(function (color) {
          var colorString = 'rgba(' + color.r + ',' + color.g + ',' + color.b + ',' + color.a + ')';
          div.style.backgroundColor = colorString;
          _this6._update(colorString, path);
        });

        // on close of the colorpicker, restore the callback.
        this.colorPicker.setCloseCallback(function () {
          div.onclick = function () {
            _this6._showColorPicker(value, div, path);
          };
        });
      }

      /**
       * parse an object and draw the correct items
       * @param obj
       * @param path
       * @private
       */
    }, {
      key: '_handleObject',
      value: function _handleObject(obj) {
        var path = arguments.length <= 1 || arguments[1] === undefined ? [] : arguments[1];
        var checkOnly = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

        var show = false;
        var filter = this.options.filter;
        var visibleInSet = false;
        for (var subObj in obj) {
          if (obj.hasOwnProperty(subObj)) {
            show = true;
            var item = obj[subObj];
            var newPath = util.copyAndExtendArray(path, subObj);
            if (typeof filter === 'function') {
              show = filter(subObj, path);

              // if needed we must go deeper into the object.
              if (show === false) {
                if (!(item instanceof Array) && typeof item !== 'string' && typeof item !== 'boolean' && item instanceof Object) {
                  this.allowCreation = false;
                  show = this._handleObject(item, newPath, true);
                  this.allowCreation = checkOnly === false;
                }
              }
            }

            if (show !== false) {
              visibleInSet = true;
              var value = this._getValue(newPath);

              if (item instanceof Array) {
                this._handleArray(item, value, newPath);
              } else if (typeof item === 'string') {
                this._makeTextInput(item, value, newPath);
              } else if (typeof item === 'boolean') {
                this._makeCheckbox(item, value, newPath);
              } else if (item instanceof Object) {
                // collapse the physics options that are not enabled
                var draw = true;
                if (path.indexOf('physics') !== -1) {
                  if (this.moduleOptions.physics.solver !== subObj) {
                    draw = false;
                  }
                }

                if (draw === true) {
                  // initially collapse options with an disabled enabled option.
                  if (item.enabled !== undefined) {
                    var enabledPath = util.copyAndExtendArray(newPath, 'enabled');
                    var enabledValue = this._getValue(enabledPath);
                    if (enabledValue === true) {
                      var label = this._makeLabel(subObj, newPath, true);
                      this._makeItem(newPath, label);
                      visibleInSet = this._handleObject(item, newPath) || visibleInSet;
                    } else {
                      this._makeCheckbox(item, enabledValue, newPath);
                    }
                  } else {
                    var label = this._makeLabel(subObj, newPath, true);
                    this._makeItem(newPath, label);
                    visibleInSet = this._handleObject(item, newPath) || visibleInSet;
                  }
                }
              } else {
                console.error('dont know how to handle', item, subObj, newPath);
              }
            }
          }
        }
        return visibleInSet;
      }

      /**
       * handle the array type of option
       * @param optionName
       * @param arr
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_handleArray',
      value: function _handleArray(arr, value, path) {
        if (typeof arr[0] === 'string' && arr[0] === 'color') {
          this._makeColorField(arr, value, path);
          if (arr[1] !== value) {
            this.changedOptions.push({ path: path, value: value });
          }
        } else if (typeof arr[0] === 'string') {
          this._makeDropdown(arr, value, path);
          if (arr[0] !== value) {
            this.changedOptions.push({ path: path, value: value });
          }
        } else if (typeof arr[0] === 'number') {
          this._makeRange(arr, value, path);
          if (arr[0] !== value) {
            this.changedOptions.push({ path: path, value: Number(value) });
          }
        }
      }

      /**
       * called to update the network with the new settings.
       * @param value
       * @param path
       * @private
       */
    }, {
      key: '_update',
      value: function _update(value, path) {
        var options = this._constructOptions(value, path);

        if (this.parent.body && this.parent.body.emitter && this.parent.body.emitter.emit) {
          this.parent.body.emitter.emit("configChange", options);
        }
        this.initialized = true;
        this.parent.setOptions(options);
      }
    }, {
      key: '_constructOptions',
      value: function _constructOptions(value, path) {
        var optionsObj = arguments.length <= 2 || arguments[2] === undefined ? {} : arguments[2];

        var pointer = optionsObj;

        // when dropdown boxes can be string or boolean, we typecast it into correct types
        value = value === 'true' ? true : value;
        value = value === 'false' ? false : value;

        for (var i = 0; i < path.length; i++) {
          if (path[i] !== 'global') {
            if (pointer[path[i]] === undefined) {
              pointer[path[i]] = {};
            }
            if (i !== path.length - 1) {
              pointer = pointer[path[i]];
            } else {
              pointer[path[i]] = value;
            }
          }
        }
        return optionsObj;
      }
    }, {
      key: '_printOptions',
      value: function _printOptions() {
        var options = this.getOptions();
        this.optionsContainer.innerHTML = '<pre>var options = ' + JSON.stringify(options, null, 2) + '</pre>';
      }
    }, {
      key: 'getOptions',
      value: function getOptions() {
        var options = {};
        for (var i = 0; i < this.changedOptions.length; i++) {
          this._constructOptions(this.changedOptions[i].value, this.changedOptions[i].path, options);
        }
        return options;
      }
    }]);

    return Configurator;
  })();

  exports['default'] = Configurator;
  module.exports = exports['default'];

/***/ },
/* 45 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var Hammer = __webpack_require__(20);
  var hammerUtil = __webpack_require__(24);
  var util = __webpack_require__(1);

  var ColorPicker = (function () {
    function ColorPicker() {
      var pixelRatio = arguments.length <= 0 || arguments[0] === undefined ? 1 : arguments[0];

      _classCallCheck(this, ColorPicker);

      this.pixelRatio = pixelRatio;
      this.generated = false;
      this.centerCoordinates = { x: 289 / 2, y: 289 / 2 };
      this.r = 289 * 0.49;
      this.color = { r: 255, g: 255, b: 255, a: 1.0 };
      this.hueCircle = undefined;
      this.initialColor = { r: 255, g: 255, b: 255, a: 1.0 };
      this.previousColor = undefined;
      this.applied = false;

      // bound by
      this.updateCallback = function () {};
      this.closeCallback = function () {};

      // create all DOM elements
      this._create();
    }

    /**
     * this inserts the colorPicker into a div from the DOM
     * @param container
     */

    _createClass(ColorPicker, [{
      key: 'insertTo',
      value: function insertTo(container) {
        if (this.hammer !== undefined) {
          this.hammer.destroy();
          this.hammer = undefined;
        }
        this.container = container;
        this.container.appendChild(this.frame);
        this._bindHammer();

        this._setSize();
      }

      /**
       * the callback is executed on apply and save. Bind it to the application
       * @param callback
       */
    }, {
      key: 'setUpdateCallback',
      value: function setUpdateCallback(callback) {
        if (typeof callback === 'function') {
          this.updateCallback = callback;
        } else {
          throw new Error("Function attempted to set as colorPicker update callback is not a function.");
        }
      }

      /**
       * the callback is executed on apply and save. Bind it to the application
       * @param callback
       */
    }, {
      key: 'setCloseCallback',
      value: function setCloseCallback(callback) {
        if (typeof callback === 'function') {
          this.closeCallback = callback;
        } else {
          throw new Error("Function attempted to set as colorPicker closing callback is not a function.");
        }
      }
    }, {
      key: '_isColorString',
      value: function _isColorString(color) {
        var htmlColors = { black: '#000000', navy: '#000080', darkblue: '#00008B', mediumblue: '#0000CD', blue: '#0000FF', darkgreen: '#006400', green: '#008000', teal: '#008080', darkcyan: '#008B8B', deepskyblue: '#00BFFF', darkturquoise: '#00CED1', mediumspringgreen: '#00FA9A', lime: '#00FF00', springgreen: '#00FF7F', aqua: '#00FFFF', cyan: '#00FFFF', midnightblue: '#191970', dodgerblue: '#1E90FF', lightseagreen: '#20B2AA', forestgreen: '#228B22', seagreen: '#2E8B57', darkslategray: '#2F4F4F', limegreen: '#32CD32', mediumseagreen: '#3CB371', turquoise: '#40E0D0', royalblue: '#4169E1', steelblue: '#4682B4', darkslateblue: '#483D8B', mediumturquoise: '#48D1CC', indigo: '#4B0082', darkolivegreen: '#556B2F', cadetblue: '#5F9EA0', cornflowerblue: '#6495ED', mediumaquamarine: '#66CDAA', dimgray: '#696969', slateblue: '#6A5ACD', olivedrab: '#6B8E23', slategray: '#708090', lightslategray: '#778899', mediumslateblue: '#7B68EE', lawngreen: '#7CFC00', chartreuse: '#7FFF00', aquamarine: '#7FFFD4', maroon: '#800000', purple: '#800080', olive: '#808000', gray: '#808080', skyblue: '#87CEEB', lightskyblue: '#87CEFA', blueviolet: '#8A2BE2', darkred: '#8B0000', darkmagenta: '#8B008B', saddlebrown: '#8B4513', darkseagreen: '#8FBC8F', lightgreen: '#90EE90', mediumpurple: '#9370D8', darkviolet: '#9400D3', palegreen: '#98FB98', darkorchid: '#9932CC', yellowgreen: '#9ACD32', sienna: '#A0522D', brown: '#A52A2A', darkgray: '#A9A9A9', lightblue: '#ADD8E6', greenyellow: '#ADFF2F', paleturquoise: '#AFEEEE', lightsteelblue: '#B0C4DE', powderblue: '#B0E0E6', firebrick: '#B22222', darkgoldenrod: '#B8860B', mediumorchid: '#BA55D3', rosybrown: '#BC8F8F', darkkhaki: '#BDB76B', silver: '#C0C0C0', mediumvioletred: '#C71585', indianred: '#CD5C5C', peru: '#CD853F', chocolate: '#D2691E', tan: '#D2B48C', lightgrey: '#D3D3D3', palevioletred: '#D87093', thistle: '#D8BFD8', orchid: '#DA70D6', goldenrod: '#DAA520', crimson: '#DC143C', gainsboro: '#DCDCDC', plum: '#DDA0DD', burlywood: '#DEB887', lightcyan: '#E0FFFF', lavender: '#E6E6FA', darksalmon: '#E9967A', violet: '#EE82EE', palegoldenrod: '#EEE8AA', lightcoral: '#F08080', khaki: '#F0E68C', aliceblue: '#F0F8FF', honeydew: '#F0FFF0', azure: '#F0FFFF', sandybrown: '#F4A460', wheat: '#F5DEB3', beige: '#F5F5DC', whitesmoke: '#F5F5F5', mintcream: '#F5FFFA', ghostwhite: '#F8F8FF', salmon: '#FA8072', antiquewhite: '#FAEBD7', linen: '#FAF0E6', lightgoldenrodyellow: '#FAFAD2', oldlace: '#FDF5E6', red: '#FF0000', fuchsia: '#FF00FF', magenta: '#FF00FF', deeppink: '#FF1493', orangered: '#FF4500', tomato: '#FF6347', hotpink: '#FF69B4', coral: '#FF7F50', darkorange: '#FF8C00', lightsalmon: '#FFA07A', orange: '#FFA500', lightpink: '#FFB6C1', pink: '#FFC0CB', gold: '#FFD700', peachpuff: '#FFDAB9', navajowhite: '#FFDEAD', moccasin: '#FFE4B5', bisque: '#FFE4C4', mistyrose: '#FFE4E1', blanchedalmond: '#FFEBCD', papayawhip: '#FFEFD5', lavenderblush: '#FFF0F5', seashell: '#FFF5EE', cornsilk: '#FFF8DC', lemonchiffon: '#FFFACD', floralwhite: '#FFFAF0', snow: '#FFFAFA', yellow: '#FFFF00', lightyellow: '#FFFFE0', ivory: '#FFFFF0', white: '#FFFFFF' };
        if (typeof color === 'string') {
          return htmlColors[color];
        }
      }

      /**
       * Set the color of the colorPicker
       * Supported formats:
       * 'red'                   --> HTML color string
       * '#ffffff'               --> hex string
       * 'rbg(255,255,255)'      --> rgb string
       * 'rgba(255,255,255,1.0)' --> rgba string
       * {r:255,g:255,b:255}     --> rgb object
       * {r:255,g:255,b:255,a:1.0} --> rgba object
       * @param color
       * @param setInitial
       */
    }, {
      key: 'setColor',
      value: function setColor(color) {
        var setInitial = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        if (color === 'none') {
          return;
        }

        var rgba = undefined;

        // if a html color shorthand is used, convert to hex
        var htmlColor = this._isColorString(color);
        if (htmlColor !== undefined) {
          color = htmlColor;
        }

        // check format
        if (util.isString(color) === true) {
          if (util.isValidRGB(color) === true) {
            var rgbaArray = color.substr(4).substr(0, color.length - 5).split(',');
            rgba = { r: rgbaArray[0], g: rgbaArray[1], b: rgbaArray[2], a: 1.0 };
          } else if (util.isValidRGBA(color) === true) {
            var rgbaArray = color.substr(5).substr(0, color.length - 6).split(',');
            rgba = { r: rgbaArray[0], g: rgbaArray[1], b: rgbaArray[2], a: rgbaArray[3] };
          } else if (util.isValidHex(color) === true) {
            var rgbObj = util.hexToRGB(color);
            rgba = { r: rgbObj.r, g: rgbObj.g, b: rgbObj.b, a: 1.0 };
          }
        } else {
          if (color instanceof Object) {
            if (color.r !== undefined && color.g !== undefined && color.b !== undefined) {
              var alpha = color.a !== undefined ? color.a : '1.0';
              rgba = { r: color.r, g: color.g, b: color.b, a: alpha };
            }
          }
        }

        // set color
        if (rgba === undefined) {
          throw new Error("Unknown color passed to the colorPicker. Supported are strings: rgb, hex, rgba. Object: rgb ({r:r,g:g,b:b,[a:a]}). Supplied: " + JSON.stringify(color));
        } else {
          this._setColor(rgba, setInitial);
        }
      }

      /**
       * this shows the color picker.
       * The hue circle is constructed once and stored.
       */
    }, {
      key: 'show',
      value: function show() {
        if (this.closeCallback !== undefined) {
          this.closeCallback();
          this.closeCallback = undefined;
        }

        this.applied = false;
        this.frame.style.display = 'block';
        this._generateHueCircle();
      }

      // ------------------------------------------ PRIVATE ----------------------------- //

      /**
       * Hide the picker. Is called by the cancel button.
       * Optional boolean to store the previous color for easy access later on.
       * @param storePrevious
       * @private
       */
    }, {
      key: '_hide',
      value: function _hide() {
        var _this = this;

        var storePrevious = arguments.length <= 0 || arguments[0] === undefined ? true : arguments[0];

        // store the previous color for next time;
        if (storePrevious === true) {
          this.previousColor = util.extend({}, this.color);
        }

        if (this.applied === true) {
          this.updateCallback(this.initialColor);
        }

        this.frame.style.display = 'none';

        // call the closing callback, restoring the onclick method.
        // this is in a setTimeout because it will trigger the show again before the click is done.
        setTimeout(function () {
          if (_this.closeCallback !== undefined) {
            _this.closeCallback();
            _this.closeCallback = undefined;
          }
        }, 0);
      }

      /**
       * bound to the save button. Saves and hides.
       * @private
       */
    }, {
      key: '_save',
      value: function _save() {
        this.updateCallback(this.color);
        this.applied = false;
        this._hide();
      }

      /**
       * Bound to apply button. Saves but does not close. Is undone by the cancel button.
       * @private
       */
    }, {
      key: '_apply',
      value: function _apply() {
        this.applied = true;
        this.updateCallback(this.color);
        this._updatePicker(this.color);
      }

      /**
       * load the color from the previous session.
       * @private
       */
    }, {
      key: '_loadLast',
      value: function _loadLast() {
        if (this.previousColor !== undefined) {
          this.setColor(this.previousColor, false);
        } else {
          alert("There is no last color to load...");
        }
      }

      /**
       * set the color, place the picker
       * @param rgba
       * @param setInitial
       * @private
       */
    }, {
      key: '_setColor',
      value: function _setColor(rgba) {
        var setInitial = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        // store the initial color
        if (setInitial === true) {
          this.initialColor = util.extend({}, rgba);
        }

        this.color = rgba;
        var hsv = util.RGBToHSV(rgba.r, rgba.g, rgba.b);

        var angleConvert = 2 * Math.PI;
        var radius = this.r * hsv.s;
        var x = this.centerCoordinates.x + radius * Math.sin(angleConvert * hsv.h);
        var y = this.centerCoordinates.y + radius * Math.cos(angleConvert * hsv.h);

        this.colorPickerSelector.style.left = x - 0.5 * this.colorPickerSelector.clientWidth + 'px';
        this.colorPickerSelector.style.top = y - 0.5 * this.colorPickerSelector.clientHeight + 'px';

        this._updatePicker(rgba);
      }

      /**
       * bound to opacity control
       * @param value
       * @private
       */
    }, {
      key: '_setOpacity',
      value: function _setOpacity(value) {
        this.color.a = value / 100;
        this._updatePicker(this.color);
      }

      /**
       * bound to brightness control
       * @param value
       * @private
       */
    }, {
      key: '_setBrightness',
      value: function _setBrightness(value) {
        var hsv = util.RGBToHSV(this.color.r, this.color.g, this.color.b);
        hsv.v = value / 100;
        var rgba = util.HSVToRGB(hsv.h, hsv.s, hsv.v);
        rgba['a'] = this.color.a;
        this.color = rgba;
        this._updatePicker();
      }

      /**
       * update the color picker. A black circle overlays the hue circle to mimic the brightness decreasing.
       * @param rgba
       * @private
       */
    }, {
      key: '_updatePicker',
      value: function _updatePicker() {
        var rgba = arguments.length <= 0 || arguments[0] === undefined ? this.color : arguments[0];

        var hsv = util.RGBToHSV(rgba.r, rgba.g, rgba.b);
        var ctx = this.colorPickerCanvas.getContext('2d');
        if (this.pixelRation === undefined) {
          this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);
        }
        ctx.setTransform(this.pixelRatio, 0, 0, this.pixelRatio, 0, 0);

        // clear the canvas
        var w = this.colorPickerCanvas.clientWidth;
        var h = this.colorPickerCanvas.clientHeight;
        ctx.clearRect(0, 0, w, h);

        ctx.putImageData(this.hueCircle, 0, 0);
        ctx.fillStyle = 'rgba(0,0,0,' + (1 - hsv.v) + ')';
        ctx.circle(this.centerCoordinates.x, this.centerCoordinates.y, this.r);
        ctx.fill();

        this.brightnessRange.value = 100 * hsv.v;
        this.opacityRange.value = 100 * rgba.a;

        this.initialColorDiv.style.backgroundColor = 'rgba(' + this.initialColor.r + ',' + this.initialColor.g + ',' + this.initialColor.b + ',' + this.initialColor.a + ')';
        this.newColorDiv.style.backgroundColor = 'rgba(' + this.color.r + ',' + this.color.g + ',' + this.color.b + ',' + this.color.a + ')';
      }

      /**
       * used by create to set the size of the canvas.
       * @private
       */
    }, {
      key: '_setSize',
      value: function _setSize() {
        this.colorPickerCanvas.style.width = '100%';
        this.colorPickerCanvas.style.height = '100%';

        this.colorPickerCanvas.width = 289 * this.pixelRatio;
        this.colorPickerCanvas.height = 289 * this.pixelRatio;
      }

      /**
       * create all dom elements
       * TODO: cleanup, lots of similar dom elements
       * @private
       */
    }, {
      key: '_create',
      value: function _create() {
        this.frame = document.createElement('div');
        this.frame.className = 'vis-color-picker';

        this.colorPickerDiv = document.createElement('div');
        this.colorPickerSelector = document.createElement('div');
        this.colorPickerSelector.className = 'vis-selector';
        this.colorPickerDiv.appendChild(this.colorPickerSelector);

        this.colorPickerCanvas = document.createElement('canvas');
        this.colorPickerDiv.appendChild(this.colorPickerCanvas);

        if (!this.colorPickerCanvas.getContext) {
          var noCanvas = document.createElement('DIV');
          noCanvas.style.color = 'red';
          noCanvas.style.fontWeight = 'bold';
          noCanvas.style.padding = '10px';
          noCanvas.innerHTML = 'Error: your browser does not support HTML canvas';
          this.colorPickerCanvas.appendChild(noCanvas);
        } else {
          var ctx = this.colorPickerCanvas.getContext("2d");
          this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);

          this.colorPickerCanvas.getContext("2d").setTransform(this.pixelRatio, 0, 0, this.pixelRatio, 0, 0);
        }

        this.colorPickerDiv.className = 'vis-color';

        this.opacityDiv = document.createElement('div');
        this.opacityDiv.className = 'vis-opacity';

        this.brightnessDiv = document.createElement('div');
        this.brightnessDiv.className = 'vis-brightness';

        this.arrowDiv = document.createElement('div');
        this.arrowDiv.className = 'vis-arrow';

        this.opacityRange = document.createElement('input');
        try {
          this.opacityRange.type = 'range'; // Not supported on IE9
          this.opacityRange.min = '0';
          this.opacityRange.max = '100';
        } catch (err) {}
        this.opacityRange.value = '100';
        this.opacityRange.className = 'vis-range';

        this.brightnessRange = document.createElement('input');
        try {
          this.brightnessRange.type = 'range'; // Not supported on IE9
          this.brightnessRange.min = '0';
          this.brightnessRange.max = '100';
        } catch (err) {}
        this.brightnessRange.value = '100';
        this.brightnessRange.className = 'vis-range';

        this.opacityDiv.appendChild(this.opacityRange);
        this.brightnessDiv.appendChild(this.brightnessRange);

        var me = this;
        this.opacityRange.onchange = function () {
          me._setOpacity(this.value);
        };
        this.opacityRange.oninput = function () {
          me._setOpacity(this.value);
        };
        this.brightnessRange.onchange = function () {
          me._setBrightness(this.value);
        };
        this.brightnessRange.oninput = function () {
          me._setBrightness(this.value);
        };

        this.brightnessLabel = document.createElement("div");
        this.brightnessLabel.className = "vis-label vis-brightness";
        this.brightnessLabel.innerHTML = 'brightness:';

        this.opacityLabel = document.createElement("div");
        this.opacityLabel.className = "vis-label vis-opacity";
        this.opacityLabel.innerHTML = 'opacity:';

        this.newColorDiv = document.createElement("div");
        this.newColorDiv.className = "vis-new-color";
        this.newColorDiv.innerHTML = 'new';

        this.initialColorDiv = document.createElement("div");
        this.initialColorDiv.className = "vis-initial-color";
        this.initialColorDiv.innerHTML = 'initial';

        this.cancelButton = document.createElement("div");
        this.cancelButton.className = "vis-button vis-cancel";
        this.cancelButton.innerHTML = 'cancel';
        this.cancelButton.onclick = this._hide.bind(this, false);

        this.applyButton = document.createElement("div");
        this.applyButton.className = "vis-button vis-apply";
        this.applyButton.innerHTML = 'apply';
        this.applyButton.onclick = this._apply.bind(this);

        this.saveButton = document.createElement("div");
        this.saveButton.className = "vis-button vis-save";
        this.saveButton.innerHTML = 'save';
        this.saveButton.onclick = this._save.bind(this);

        this.loadButton = document.createElement("div");
        this.loadButton.className = "vis-button vis-load";
        this.loadButton.innerHTML = 'load last';
        this.loadButton.onclick = this._loadLast.bind(this);

        this.frame.appendChild(this.colorPickerDiv);
        this.frame.appendChild(this.arrowDiv);
        this.frame.appendChild(this.brightnessLabel);
        this.frame.appendChild(this.brightnessDiv);
        this.frame.appendChild(this.opacityLabel);
        this.frame.appendChild(this.opacityDiv);
        this.frame.appendChild(this.newColorDiv);
        this.frame.appendChild(this.initialColorDiv);

        this.frame.appendChild(this.cancelButton);
        this.frame.appendChild(this.applyButton);
        this.frame.appendChild(this.saveButton);
        this.frame.appendChild(this.loadButton);
      }

      /**
       * bind hammer to the color picker
       * @private
       */
    }, {
      key: '_bindHammer',
      value: function _bindHammer() {
        var _this2 = this;

        this.drag = {};
        this.pinch = {};
        this.hammer = new Hammer(this.colorPickerCanvas);
        this.hammer.get('pinch').set({ enable: true });

        hammerUtil.onTouch(this.hammer, function (event) {
          _this2._moveSelector(event);
        });
        this.hammer.on('tap', function (event) {
          _this2._moveSelector(event);
        });
        this.hammer.on('panstart', function (event) {
          _this2._moveSelector(event);
        });
        this.hammer.on('panmove', function (event) {
          _this2._moveSelector(event);
        });
        this.hammer.on('panend', function (event) {
          _this2._moveSelector(event);
        });
      }

      /**
       * generate the hue circle. This is relatively heavy (200ms) and is done only once on the first time it is shown.
       * @private
       */
    }, {
      key: '_generateHueCircle',
      value: function _generateHueCircle() {
        if (this.generated === false) {
          var ctx = this.colorPickerCanvas.getContext('2d');
          if (this.pixelRation === undefined) {
            this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);
          }
          ctx.setTransform(this.pixelRatio, 0, 0, this.pixelRatio, 0, 0);

          // clear the canvas
          var w = this.colorPickerCanvas.clientWidth;
          var h = this.colorPickerCanvas.clientHeight;
          ctx.clearRect(0, 0, w, h);

          // draw hue circle
          var x = undefined,
              y = undefined,
              hue = undefined,
              sat = undefined;
          this.centerCoordinates = { x: w * 0.5, y: h * 0.5 };
          this.r = 0.49 * w;
          var angleConvert = 2 * Math.PI / 360;
          var hfac = 1 / 360;
          var sfac = 1 / this.r;
          var rgb = undefined;
          for (hue = 0; hue < 360; hue++) {
            for (sat = 0; sat < this.r; sat++) {
              x = this.centerCoordinates.x + sat * Math.sin(angleConvert * hue);
              y = this.centerCoordinates.y + sat * Math.cos(angleConvert * hue);
              rgb = util.HSVToRGB(hue * hfac, sat * sfac, 1);
              ctx.fillStyle = 'rgb(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ')';
              ctx.fillRect(x - 0.5, y - 0.5, 2, 2);
            }
          }
          ctx.strokeStyle = 'rgba(0,0,0,1)';
          ctx.circle(this.centerCoordinates.x, this.centerCoordinates.y, this.r);
          ctx.stroke();

          this.hueCircle = ctx.getImageData(0, 0, w, h);
        }
        this.generated = true;
      }

      /**
       * move the selector. This is called by hammer functions.
       *
       * @param event
       * @private
       */
    }, {
      key: '_moveSelector',
      value: function _moveSelector(event) {
        var rect = this.colorPickerDiv.getBoundingClientRect();
        var left = event.center.x - rect.left;
        var top = event.center.y - rect.top;

        var centerY = 0.5 * this.colorPickerDiv.clientHeight;
        var centerX = 0.5 * this.colorPickerDiv.clientWidth;

        var x = left - centerX;
        var y = top - centerY;

        var angle = Math.atan2(x, y);
        var radius = 0.98 * Math.min(Math.sqrt(x * x + y * y), centerX);

        var newTop = Math.cos(angle) * radius + centerY;
        var newLeft = Math.sin(angle) * radius + centerX;

        this.colorPickerSelector.style.top = newTop - 0.5 * this.colorPickerSelector.clientHeight + 'px';
        this.colorPickerSelector.style.left = newLeft - 0.5 * this.colorPickerSelector.clientWidth + 'px';

        // set color
        var h = angle / (2 * Math.PI);
        h = h < 0 ? h + 1 : h;
        var s = radius / this.r;
        var hsv = util.RGBToHSV(this.color.r, this.color.g, this.color.b);
        hsv.h = h;
        hsv.s = s;
        var rgba = util.HSVToRGB(hsv.h, hsv.s, hsv.v);
        rgba['a'] = this.color.a;
        this.color = rgba;

        // update previews
        this.initialColorDiv.style.backgroundColor = 'rgba(' + this.initialColor.r + ',' + this.initialColor.g + ',' + this.initialColor.b + ',' + this.initialColor.a + ')';
        this.newColorDiv.style.backgroundColor = 'rgba(' + this.color.r + ',' + this.color.g + ',' + this.color.b + ',' + this.color.a + ')';
      }
    }]);

    return ColorPicker;
  })();

  exports['default'] = ColorPicker;
  module.exports = exports['default'];

/***/ },
/* 46 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var util = __webpack_require__(1);

  var errorFound = false;
  var allOptions = undefined;
  var printStyle = 'background: #FFeeee; color: #dd0000';
  /**
   *  Used to validate options.
   */

  var Validator = (function () {
    function Validator() {
      _classCallCheck(this, Validator);
    }

    /**
     * Main function to be called
     * @param options
     * @param subObject
     * @returns {boolean}
     */

    _createClass(Validator, null, [{
      key: 'validate',
      value: function validate(options, referenceOptions, subObject) {
        errorFound = false;
        allOptions = referenceOptions;
        var usedOptions = referenceOptions;
        if (subObject !== undefined) {
          usedOptions = referenceOptions[subObject];
        }
        Validator.parse(options, usedOptions, []);
        return errorFound;
      }

      /**
       * Will traverse an object recursively and check every value
       * @param options
       * @param referenceOptions
       * @param path
       */
    }, {
      key: 'parse',
      value: function parse(options, referenceOptions, path) {
        for (var option in options) {
          if (options.hasOwnProperty(option)) {
            Validator.check(option, options, referenceOptions, path);
          }
        }
      }

      /**
       * Check every value. If the value is an object, call the parse function on that object.
       * @param option
       * @param options
       * @param referenceOptions
       * @param path
       */
    }, {
      key: 'check',
      value: function check(option, options, referenceOptions, path) {
        if (referenceOptions[option] === undefined && referenceOptions.__any__ === undefined) {
          Validator.getSuggestion(option, referenceOptions, path);
        } else if (referenceOptions[option] === undefined && referenceOptions.__any__ !== undefined) {
          // __any__ is a wildcard. Any value is accepted and will be further analysed by reference.
          if (Validator.getType(options[option]) === 'object' && referenceOptions['__any__'].__type__ !== undefined) {
            // if the any subgroup is not a predefined object int he configurator we do not look deeper into the object.
            Validator.checkFields(option, options, referenceOptions, '__any__', referenceOptions['__any__'].__type__, path);
          } else {
            Validator.checkFields(option, options, referenceOptions, '__any__', referenceOptions['__any__'], path);
          }
        } else {
          // Since all options in the reference are objects, we can check whether they are supposed to be object to look for the __type__ field.
          if (referenceOptions[option].__type__ !== undefined) {
            // if this should be an object, we check if the correct type has been supplied to account for shorthand options.
            Validator.checkFields(option, options, referenceOptions, option, referenceOptions[option].__type__, path);
          } else {
            Validator.checkFields(option, options, referenceOptions, option, referenceOptions[option], path);
          }
        }
      }

      /**
       *
       * @param {String}  option     | the option property
       * @param {Object}  options    | The supplied options object
       * @param {Object}  referenceOptions    | The reference options containing all options and their allowed formats
       * @param {String}  referenceOption     | Usually this is the same as option, except when handling an __any__ tag.
       * @param {String}  refOptionType       | This is the type object from the reference options
       * @param {Array}   path      | where in the object is the option
       */
    }, {
      key: 'checkFields',
      value: function checkFields(option, options, referenceOptions, referenceOption, refOptionObj, path) {
        var optionType = Validator.getType(options[option]);
        var refOptionType = refOptionObj[optionType];
        if (refOptionType !== undefined) {
          // if the type is correct, we check if it is supposed to be one of a few select values
          if (Validator.getType(refOptionType) === 'array') {
            if (refOptionType.indexOf(options[option]) === -1) {
              console.log('%cInvalid option detected in "' + option + '".' + ' Allowed values are:' + Validator.print(refOptionType) + ' not "' + options[option] + '". ' + Validator.printLocation(path, option), printStyle);
              errorFound = true;
            } else if (optionType === 'object' && referenceOption !== "__any__") {
              path = util.copyAndExtendArray(path, option);
              Validator.parse(options[option], referenceOptions[referenceOption], path);
            }
          } else if (optionType === 'object' && referenceOption !== "__any__") {
            path = util.copyAndExtendArray(path, option);
            Validator.parse(options[option], referenceOptions[referenceOption], path);
          }
        } else if (refOptionObj['any'] === undefined) {
          // type of the field is incorrect and the field cannot be any
          console.log('%cInvalid type received for "' + option + '". Expected: ' + Validator.print(Object.keys(refOptionObj)) + '. Received [' + optionType + '] "' + options[option] + '"' + Validator.printLocation(path, option), printStyle);
          errorFound = true;
        }
      }
    }, {
      key: 'getType',
      value: function getType(object) {
        var type = typeof object;

        if (type === 'object') {
          if (object === null) {
            return 'null';
          }
          if (object instanceof Boolean) {
            return 'boolean';
          }
          if (object instanceof Number) {
            return 'number';
          }
          if (object instanceof String) {
            return 'string';
          }
          if (Array.isArray(object)) {
            return 'array';
          }
          if (object instanceof Date) {
            return 'date';
          }
          if (object.nodeType !== undefined) {
            return 'dom';
          }
          if (object._isAMomentObject === true) {
            return 'moment';
          }
          return 'object';
        } else if (type === 'number') {
          return 'number';
        } else if (type === 'boolean') {
          return 'boolean';
        } else if (type === 'string') {
          return 'string';
        } else if (type === undefined) {
          return 'undefined';
        }
        return type;
      }
    }, {
      key: 'getSuggestion',
      value: function getSuggestion(option, options, path) {
        var localSearch = Validator.findInOptions(option, options, path, false);
        var globalSearch = Validator.findInOptions(option, allOptions, [], true);

        var localSearchThreshold = 8;
        var globalSearchThreshold = 4;

        if (localSearch.indexMatch !== undefined) {
          console.log('%cUnknown option detected: "' + option + '" in ' + Validator.printLocation(localSearch.path, option, '') + 'Perhaps it was incomplete? Did you mean: "' + localSearch.indexMatch + '"?\n\n', printStyle);
        } else if (globalSearch.distance <= globalSearchThreshold && localSearch.distance > globalSearch.distance) {
          console.log('%cUnknown option detected: "' + option + '" in ' + Validator.printLocation(localSearch.path, option, '') + 'Perhaps it was misplaced? Matching option found at: ' + Validator.printLocation(globalSearch.path, globalSearch.closestMatch, ''), printStyle);
        } else if (localSearch.distance <= localSearchThreshold) {
          console.log('%cUnknown option detected: "' + option + '". Did you mean "' + localSearch.closestMatch + '"?' + Validator.printLocation(localSearch.path, option), printStyle);
        } else {
          console.log('%cUnknown option detected: "' + option + '". Did you mean one of these: ' + Validator.print(Object.keys(options)) + Validator.printLocation(path, option), printStyle);
        }

        errorFound = true;
      }

      /**
       * traverse the options in search for a match.
       * @param option
       * @param options
       * @param path
       * @param recursive
       * @returns {{closestMatch: string, path: Array, distance: number}}
       */
    }, {
      key: 'findInOptions',
      value: function findInOptions(option, options, path) {
        var recursive = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];

        var min = 1e9;
        var closestMatch = '';
        var closestMatchPath = [];
        var lowerCaseOption = option.toLowerCase();
        var indexMatch = undefined;
        for (var op in options) {
          var distance = undefined;
          if (options[op].__type__ !== undefined && recursive === true) {
            var result = Validator.findInOptions(option, options[op], util.copyAndExtendArray(path, op));
            if (min > result.distance) {
              closestMatch = result.closestMatch;
              closestMatchPath = result.path;
              min = result.distance;
              indexMatch = result.indexMatch;
            }
          } else {
            if (op.toLowerCase().indexOf(lowerCaseOption) !== -1) {
              indexMatch = op;
            }
            distance = Validator.levenshteinDistance(option, op);
            if (min > distance) {
              closestMatch = op;
              closestMatchPath = util.copyArray(path);
              min = distance;
            }
          }
        }
        return { closestMatch: closestMatch, path: closestMatchPath, distance: min, indexMatch: indexMatch };
      }
    }, {
      key: 'printLocation',
      value: function printLocation(path, option) {
        var prefix = arguments.length <= 2 || arguments[2] === undefined ? 'Problem value found at: \n' : arguments[2];

        var str = '\n\n' + prefix + 'options = {\n';
        for (var i = 0; i < path.length; i++) {
          for (var j = 0; j < i + 1; j++) {
            str += '  ';
          }
          str += path[i] + ': {\n';
        }
        for (var j = 0; j < path.length + 1; j++) {
          str += '  ';
        }
        str += option + '\n';
        for (var i = 0; i < path.length + 1; i++) {
          for (var j = 0; j < path.length - i; j++) {
            str += '  ';
          }
          str += '}\n';
        }
        return str + '\n\n';
      }
    }, {
      key: 'print',
      value: function print(options) {
        return JSON.stringify(options).replace(/(\")|(\[)|(\])|(,"__type__")/g, "").replace(/(\,)/g, ', ');
      }

      // Compute the edit distance between the two given strings
      // http://en.wikibooks.org/wiki/Algorithm_Implementation/Strings/Levenshtein_distance#JavaScript
      /*
       Copyright (c) 2011 Andrei Mackenzie
        Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
        The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
        THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
       */
    }, {
      key: 'levenshteinDistance',
      value: function levenshteinDistance(a, b) {
        if (a.length === 0) return b.length;
        if (b.length === 0) return a.length;

        var matrix = [];

        // increment along the first column of each row
        var i;
        for (i = 0; i <= b.length; i++) {
          matrix[i] = [i];
        }

        // increment each column in the first row
        var j;
        for (j = 0; j <= a.length; j++) {
          matrix[0][j] = j;
        }

        // Fill in the rest of the matrix
        for (i = 1; i <= b.length; i++) {
          for (j = 1; j <= a.length; j++) {
            if (b.charAt(i - 1) == a.charAt(j - 1)) {
              matrix[i][j] = matrix[i - 1][j - 1];
            } else {
              matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, // substitution
              Math.min(matrix[i][j - 1] + 1, // insertion
              matrix[i - 1][j] + 1)); // deletion
            }
          }
        }

        return matrix[b.length][a.length];
      }
    }]);

    return Validator;
  })();

  exports['default'] = Validator;
  exports.printStyle = printStyle;

/***/ },
/* 47 */
/***/ function(module, exports) {

  /**
   * This object contains all possible options. It will check if the types are correct, if required if the option is one
   * of the allowed values.
   *
   * __any__ means that the name of the property does not matter.
   * __type__ is a required field for all objects and contains the allowed types of all objects
   */
  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });
  var string = 'string';
  var boolean = 'boolean';
  var number = 'number';
  var array = 'array';
  var date = 'date';
  var object = 'object'; // should only be in a __type__ property
  var dom = 'dom';
  var moment = 'moment';
  var any = 'any';

  var allOptions = {
    configure: {
      enabled: { boolean: boolean },
      filter: { boolean: boolean, 'function': 'function' },
      container: { dom: dom },
      __type__: { object: object, boolean: boolean, 'function': 'function' }
    },

    //globals :
    align: { string: string },
    autoResize: { boolean: boolean },
    throttleRedraw: { number: number },
    clickToUse: { boolean: boolean },
    dataAttributes: { string: string, array: array },
    editable: {
      add: { boolean: boolean, 'undefined': 'undefined' },
      remove: { boolean: boolean, 'undefined': 'undefined' },
      updateGroup: { boolean: boolean, 'undefined': 'undefined' },
      updateTime: { boolean: boolean, 'undefined': 'undefined' },
      __type__: { boolean: boolean, object: object }
    },
    end: { number: number, date: date, string: string, moment: moment },
    format: {
      minorLabels: {
        millisecond: { string: string, 'undefined': 'undefined' },
        second: { string: string, 'undefined': 'undefined' },
        minute: { string: string, 'undefined': 'undefined' },
        hour: { string: string, 'undefined': 'undefined' },
        weekday: { string: string, 'undefined': 'undefined' },
        day: { string: string, 'undefined': 'undefined' },
        month: { string: string, 'undefined': 'undefined' },
        year: { string: string, 'undefined': 'undefined' },
        __type__: { object: object }
      },
      majorLabels: {
        millisecond: { string: string, 'undefined': 'undefined' },
        second: { string: string, 'undefined': 'undefined' },
        minute: { string: string, 'undefined': 'undefined' },
        hour: { string: string, 'undefined': 'undefined' },
        weekday: { string: string, 'undefined': 'undefined' },
        day: { string: string, 'undefined': 'undefined' },
        month: { string: string, 'undefined': 'undefined' },
        year: { string: string, 'undefined': 'undefined' },
        __type__: { object: object }
      },
      __type__: { object: object }
    },
    moment: { 'function': 'function' },
    groupOrder: { string: string, 'function': 'function' },
    groupEditable: {
      add: { boolean: boolean, 'undefined': 'undefined' },
      remove: { boolean: boolean, 'undefined': 'undefined' },
      order: { boolean: boolean, 'undefined': 'undefined' },
      __type__: { boolean: boolean, object: object }
    },
    groupOrderSwap: { 'function': 'function' },
    height: { string: string, number: number },
    hiddenDates: {
      start: { date: date, number: number, string: string, moment: moment },
      end: { date: date, number: number, string: string, moment: moment },
      repeat: { string: string },
      __type__: { object: object, array: array }
    },
    itemsAlwaysDraggable: { boolean: boolean },
    locale: { string: string },
    locales: {
      __any__: { any: any },
      __type__: { object: object }
    },
    margin: {
      axis: { number: number },
      item: {
        horizontal: { number: number, 'undefined': 'undefined' },
        vertical: { number: number, 'undefined': 'undefined' },
        __type__: { object: object, number: number }
      },
      __type__: { object: object, number: number }
    },
    max: { date: date, number: number, string: string, moment: moment },
    maxHeight: { number: number, string: string },
    maxMinorChars: { number: number },
    min: { date: date, number: number, string: string, moment: moment },
    minHeight: { number: number, string: string },
    moveable: { boolean: boolean },
    multiselect: { boolean: boolean },
    multiselectPerGroup: { boolean: boolean },
    onAdd: { 'function': 'function' },
    onUpdate: { 'function': 'function' },
    onMove: { 'function': 'function' },
    onMoving: { 'function': 'function' },
    onRemove: { 'function': 'function' },
    onAddGroup: { 'function': 'function' },
    onMoveGroup: { 'function': 'function' },
    onRemoveGroup: { 'function': 'function' },
    order: { 'function': 'function' },
    orientation: {
      axis: { string: string, 'undefined': 'undefined' },
      item: { string: string, 'undefined': 'undefined' },
      __type__: { string: string, object: object }
    },
    selectable: { boolean: boolean },
    showCurrentTime: { boolean: boolean },
    showMajorLabels: { boolean: boolean },
    showMinorLabels: { boolean: boolean },
    stack: { boolean: boolean },
    snap: { 'function': 'function', 'null': 'null' },
    start: { date: date, number: number, string: string, moment: moment },
    template: { 'function': 'function' },
    groupTemplate: { 'function': 'function' },
    timeAxis: {
      scale: { string: string, 'undefined': 'undefined' },
      step: { number: number, 'undefined': 'undefined' },
      __type__: { object: object }
    },
    type: { string: string },
    width: { string: string, number: number },
    zoomable: { boolean: boolean },
    zoomKey: { string: ['ctrlKey', 'altKey', 'metaKey', ''] },
    zoomMax: { number: number },
    zoomMin: { number: number },

    __type__: { object: object }
  };

  var configureOptions = {
    global: {
      align: ['center', 'left', 'right'],
      autoResize: true,
      throttleRedraw: [10, 0, 1000, 10],
      clickToUse: false,
      // dataAttributes: ['all'], // FIXME: can be 'all' or string[]
      editable: {
        add: false,
        remove: false,
        updateGroup: false,
        updateTime: false
      },
      end: '',
      format: {
        minorLabels: {
          millisecond: 'SSS',
          second: 's',
          minute: 'HH:mm',
          hour: 'HH:mm',
          weekday: 'ddd D',
          day: 'D',
          month: 'MMM',
          year: 'YYYY'
        },
        majorLabels: {
          millisecond: 'HH:mm:ss',
          second: 'D MMMM HH:mm',
          minute: 'ddd D MMMM',
          hour: 'ddd D MMMM',
          weekday: 'MMMM YYYY',
          day: 'MMMM YYYY',
          month: 'YYYY',
          year: ''
        }
      },

      //groupOrder: {string, 'function': 'function'},
      groupsDraggable: false,
      height: '',
      //hiddenDates: {object, array},
      locale: '',
      margin: {
        axis: [20, 0, 100, 1],
        item: {
          horizontal: [10, 0, 100, 1],
          vertical: [10, 0, 100, 1]
        }
      },
      max: '',
      maxHeight: '',
      maxMinorChars: [7, 0, 20, 1],
      min: '',
      minHeight: '',
      moveable: false,
      multiselect: false,
      multiselectPerGroup: false,
      //onAdd: {'function': 'function'},
      //onUpdate: {'function': 'function'},
      //onMove: {'function': 'function'},
      //onMoving: {'function': 'function'},
      //onRename: {'function': 'function'},
      //order: {'function': 'function'},
      orientation: {
        axis: ['both', 'bottom', 'top'],
        item: ['bottom', 'top']
      },
      selectable: true,
      showCurrentTime: false,
      showMajorLabels: true,
      showMinorLabels: true,
      stack: true,
      //snap: {'function': 'function', nada},
      start: '',
      //template: {'function': 'function'},
      //timeAxis: {
      //  scale: ['millisecond', 'second', 'minute', 'hour', 'weekday', 'day', 'month', 'year'],
      //  step: [1, 1, 10, 1]
      //},
      type: ['box', 'point', 'range', 'background'],
      width: '100%',
      zoomable: true,
      zoomKey: ['ctrlKey', 'altKey', 'metaKey', ''],
      zoomMax: [315360000000000, 10, 315360000000000, 1],
      zoomMin: [10, 10, 315360000000000, 1]
    }
  };

  exports.allOptions = allOptions;
  exports.configureOptions = configureOptions;

/***/ },
/* 48 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var Emitter = __webpack_require__(12);
  var Hammer = __webpack_require__(20);
  var moment = __webpack_require__(2);
  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var Range = __webpack_require__(23);
  var Core = __webpack_require__(27);
  var TimeAxis = __webpack_require__(38);
  var CurrentTime = __webpack_require__(43);
  var CustomTime = __webpack_require__(41);
  var LineGraph = __webpack_require__(49);

  var Configurator = __webpack_require__(44);
  var Validator = __webpack_require__(46)['default'];
  var printStyle = __webpack_require__(46).printStyle;
  var allOptions = __webpack_require__(57).allOptions;
  var configureOptions = __webpack_require__(57).configureOptions;

  /**
   * Create a timeline visualization
   * @param {HTMLElement} container
   * @param {vis.DataSet | Array} [items]
   * @param {Object} [options]  See Graph2d.setOptions for the available options.
   * @constructor
   * @extends Core
   */
  function Graph2d(container, items, groups, options) {
    // if the third element is options, the forth is groups (optionally);
    if (!(Array.isArray(groups) || groups instanceof DataSet || groups instanceof DataView) && groups instanceof Object) {
      var forthArgument = options;
      options = groups;
      groups = forthArgument;
    }

    var me = this;
    this.defaultOptions = {
      start: null,
      end: null,

      autoResize: true,

      orientation: {
        axis: 'bottom', // axis orientation: 'bottom', 'top', or 'both'
        item: 'bottom' // not relevant for Graph2d
      },

      moment: moment,

      width: null,
      height: null,
      maxHeight: null,
      minHeight: null
    };
    this.options = util.deepExtend({}, this.defaultOptions);

    // Create the DOM, props, and emitter
    this._create(container);

    // all components listed here will be repainted automatically
    this.components = [];

    this.body = {
      dom: this.dom,
      domProps: this.props,
      emitter: {
        on: this.on.bind(this),
        off: this.off.bind(this),
        emit: this.emit.bind(this)
      },
      hiddenDates: [],
      util: {
        toScreen: me._toScreen.bind(me),
        toGlobalScreen: me._toGlobalScreen.bind(me), // this refers to the root.width
        toTime: me._toTime.bind(me),
        toGlobalTime: me._toGlobalTime.bind(me)
      }
    };

    // range
    this.range = new Range(this.body);
    this.components.push(this.range);
    this.body.range = this.range;

    // time axis
    this.timeAxis = new TimeAxis(this.body);
    this.components.push(this.timeAxis);
    //this.body.util.snap = this.timeAxis.snap.bind(this.timeAxis);

    // current time bar
    this.currentTime = new CurrentTime(this.body);
    this.components.push(this.currentTime);

    // item set
    this.linegraph = new LineGraph(this.body);

    this.components.push(this.linegraph);

    this.itemsData = null; // DataSet
    this.groupsData = null; // DataSet

    this.on('tap', function (event) {
      me.emit('click', me.getEventProperties(event));
    });
    this.on('doubletap', function (event) {
      me.emit('doubleClick', me.getEventProperties(event));
    });
    this.dom.root.oncontextmenu = function (event) {
      me.emit('contextmenu', me.getEventProperties(event));
    };

    // apply options
    if (options) {
      this.setOptions(options);
    }

    // IMPORTANT: THIS HAPPENS BEFORE SET ITEMS!
    if (groups) {
      this.setGroups(groups);
    }

    // create itemset
    if (items) {
      this.setItems(items);
    }

    // draw for the first time
    this._redraw();
  }

  // Extend the functionality from Core
  Graph2d.prototype = new Core();

  Graph2d.prototype.setOptions = function (options) {
    // validate options
    var errorFound = Validator.validate(options, allOptions);
    if (errorFound === true) {
      console.log('%cErrors have been found in the supplied options object.', printStyle);
    }

    Core.prototype.setOptions.call(this, options);
  };

  /**
   * Set items
   * @param {vis.DataSet | Array | null} items
   */
  Graph2d.prototype.setItems = function (items) {
    var initialLoad = this.itemsData == null;

    // convert to type DataSet when needed
    var newDataSet;
    if (!items) {
      newDataSet = null;
    } else if (items instanceof DataSet || items instanceof DataView) {
      newDataSet = items;
    } else {
      // turn an array into a dataset
      newDataSet = new DataSet(items, {
        type: {
          start: 'Date',
          end: 'Date'
        }
      });
    }

    // set items
    this.itemsData = newDataSet;
    this.linegraph && this.linegraph.setItems(newDataSet);

    if (initialLoad) {
      if (this.options.start != undefined || this.options.end != undefined) {
        var start = this.options.start != undefined ? this.options.start : null;
        var end = this.options.end != undefined ? this.options.end : null;
        this.setWindow(start, end, { animation: false });
      } else {
        this.fit({ animation: false });
      }
    }
  };

  /**
   * Set groups
   * @param {vis.DataSet | Array} groups
   */
  Graph2d.prototype.setGroups = function (groups) {
    // convert to type DataSet when needed
    var newDataSet;
    if (!groups) {
      newDataSet = null;
    } else if (groups instanceof DataSet || groups instanceof DataView) {
      newDataSet = groups;
    } else {
      // turn an array into a dataset
      newDataSet = new DataSet(groups);
    }

    this.groupsData = newDataSet;
    this.linegraph.setGroups(newDataSet);
  };

  /**
   * Returns an object containing an SVG element with the icon of the group (size determined by iconWidth and iconHeight), the label of the group (content) and the yAxisOrientation of the group (left or right).
   * @param groupId
   * @param width
   * @param height
   */
  Graph2d.prototype.getLegend = function (groupId, width, height) {
    if (width === undefined) {
      width = 15;
    }
    if (height === undefined) {
      height = 15;
    }
    if (this.linegraph.groups[groupId] !== undefined) {
      return this.linegraph.groups[groupId].getLegend(width, height);
    } else {
      return "cannot find group:'" + groupId + "'";
    }
  };

  /**
   * This checks if the visible option of the supplied group (by ID) is true or false.
   * @param groupId
   * @returns {*}
   */
  Graph2d.prototype.isGroupVisible = function (groupId) {
    if (this.linegraph.groups[groupId] !== undefined) {
      return this.linegraph.groups[groupId].visible && (this.linegraph.options.groups.visibility[groupId] === undefined || this.linegraph.options.groups.visibility[groupId] == true);
    } else {
      return false;
    }
  };

  /**
   * Get the data range of the item set.
   * @returns {{min: Date, max: Date}} range  A range with a start and end Date.
   *                                          When no minimum is found, min==null
   *                                          When no maximum is found, max==null
   */
  Graph2d.prototype.getDataRange = function () {
    var min = null;
    var max = null;

    // calculate min from start filed
    for (var groupId in this.linegraph.groups) {
      if (this.linegraph.groups.hasOwnProperty(groupId)) {
        if (this.linegraph.groups[groupId].visible == true) {
          for (var i = 0; i < this.linegraph.groups[groupId].itemsData.length; i++) {
            var item = this.linegraph.groups[groupId].itemsData[i];
            var value = util.convert(item.x, 'Date').valueOf();
            min = min == null ? value : min > value ? value : min;
            max = max == null ? value : max < value ? value : max;
          }
        }
      }
    }

    return {
      min: min != null ? new Date(min) : null,
      max: max != null ? new Date(max) : null
    };
  };

  /**
   * Generate Timeline related information from an event
   * @param {Event} event
   * @return {Object} An object with related information, like on which area
   *                  The event happened, whether clicked on an item, etc.
   */
  Graph2d.prototype.getEventProperties = function (event) {
    var clientX = event.center ? event.center.x : event.clientX;
    var clientY = event.center ? event.center.y : event.clientY;
    var x = clientX - util.getAbsoluteLeft(this.dom.centerContainer);
    var y = clientY - util.getAbsoluteTop(this.dom.centerContainer);
    var time = this._toTime(x);

    var customTime = CustomTime.customTimeFromTarget(event);

    var element = util.getTarget(event);
    var what = null;
    if (util.hasParent(element, this.timeAxis.dom.foreground)) {
      what = 'axis';
    } else if (this.timeAxis2 && util.hasParent(element, this.timeAxis2.dom.foreground)) {
      what = 'axis';
    } else if (util.hasParent(element, this.linegraph.yAxisLeft.dom.frame)) {
      what = 'data-axis';
    } else if (util.hasParent(element, this.linegraph.yAxisRight.dom.frame)) {
      what = 'data-axis';
    } else if (util.hasParent(element, this.linegraph.legendLeft.dom.frame)) {
      what = 'legend';
    } else if (util.hasParent(element, this.linegraph.legendRight.dom.frame)) {
      what = 'legend';
    } else if (customTime != null) {
      what = 'custom-time';
    } else if (util.hasParent(element, this.currentTime.bar)) {
      what = 'current-time';
    } else if (util.hasParent(element, this.dom.center)) {
      what = 'background';
    }

    var value = [];
    var yAxisLeft = this.linegraph.yAxisLeft;
    var yAxisRight = this.linegraph.yAxisRight;
    if (!yAxisLeft.hidden) {
      value.push(yAxisLeft.screenToValue(y));
    }
    if (!yAxisRight.hidden) {
      value.push(yAxisRight.screenToValue(y));
    }

    return {
      event: event,
      what: what,
      pageX: event.srcEvent ? event.srcEvent.pageX : event.pageX,
      pageY: event.srcEvent ? event.srcEvent.pageY : event.pageY,
      x: x,
      y: y,
      time: time,
      value: value
    };
  };

  /**
   * Load a configurator
   * @return {Object}
   * @private
   */
  Graph2d.prototype._createConfigurator = function () {
    return new Configurator(this, this.dom.container, configureOptions);
  };

  module.exports = Graph2d;

/***/ },
/* 49 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var DOMutil = __webpack_require__(7);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var Component = __webpack_require__(25);
  var DataAxis = __webpack_require__(50);
  var GraphGroup = __webpack_require__(52);
  var Legend = __webpack_require__(56);
  var Bars = __webpack_require__(53);
  var Lines = __webpack_require__(55);
  var Points = __webpack_require__(54);

  var UNGROUPED = '__ungrouped__'; // reserved group id for ungrouped items

  /**
   * This is the constructor of the LineGraph. It requires a Timeline body and options.
   *
   * @param body
   * @param options
   * @constructor
   */
  function LineGraph(body, options) {
    this.id = util.randomUUID();
    this.body = body;

    this.defaultOptions = {
      yAxisOrientation: 'left',
      defaultGroup: 'default',
      sort: true,
      sampling: true,
      stack: false,
      graphHeight: '400px',
      shaded: {
        enabled: false,
        orientation: 'bottom' // top, bottom, zero
      },
      style: 'line', // line, bar
      barChart: {
        width: 50,
        sideBySide: false,
        align: 'center' // left, center, right
      },
      interpolation: {
        enabled: true,
        parametrization: 'centripetal', // uniform (alpha = 0.0), chordal (alpha = 1.0), centripetal (alpha = 0.5)
        alpha: 0.5
      },
      drawPoints: {
        enabled: true,
        size: 6,
        style: 'square' // square, circle
      },
      dataAxis: {}, //Defaults are done on DataAxis level
      legend: {}, //Defaults are done on Legend level
      groups: {
        visibility: {}
      }
    };

    // options is shared by this lineGraph and all its items
    this.options = util.extend({}, this.defaultOptions);
    this.dom = {};
    this.props = {};
    this.hammer = null;
    this.groups = {};
    this.abortedGraphUpdate = false;
    this.updateSVGheight = false;
    this.updateSVGheightOnResize = false;
    this.forceGraphUpdate = true;

    var me = this;
    this.itemsData = null; // DataSet
    this.groupsData = null; // DataSet

    // listeners for the DataSet of the items
    this.itemListeners = {
      'add': function add(event, params, senderId) {
        me._onAdd(params.items);
      },
      'update': function update(event, params, senderId) {
        me._onUpdate(params.items);
      },
      'remove': function remove(event, params, senderId) {
        me._onRemove(params.items);
      }
    };

    // listeners for the DataSet of the groups
    this.groupListeners = {
      'add': function add(event, params, senderId) {
        me._onAddGroups(params.items);
      },
      'update': function update(event, params, senderId) {
        me._onUpdateGroups(params.items);
      },
      'remove': function remove(event, params, senderId) {
        me._onRemoveGroups(params.items);
      }
    };

    this.items = {}; // object with an Item for every data item
    this.selection = []; // list with the ids of all selected nodes
    this.lastStart = this.body.range.start;
    this.touchParams = {}; // stores properties while dragging

    this.svgElements = {};
    this.setOptions(options);
    this.groupsUsingDefaultStyles = [0];
    this.body.emitter.on('rangechanged', function () {
      me.lastStart = me.body.range.start;
      me.svg.style.left = util.option.asSize(-me.props.width);

      me.forceGraphUpdate = true;
      //Is this local redraw necessary? (Core also does a change event!)
      me.redraw.call(me);
    });

    // create the HTML DOM
    this._create();
    this.framework = { svg: this.svg, svgElements: this.svgElements, options: this.options, groups: this.groups };
  }

  LineGraph.prototype = new Component();

  /**
   * Create the HTML DOM for the ItemSet
   */
  LineGraph.prototype._create = function () {
    var frame = document.createElement('div');
    frame.className = 'vis-line-graph';
    this.dom.frame = frame;

    // create svg element for graph drawing.
    this.svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
    this.svg.style.position = 'relative';
    this.svg.style.height = ('' + this.options.graphHeight).replace('px', '') + 'px';
    this.svg.style.display = 'block';
    frame.appendChild(this.svg);

    // data axis
    this.options.dataAxis.orientation = 'left';
    this.yAxisLeft = new DataAxis(this.body, this.options.dataAxis, this.svg, this.options.groups);

    this.options.dataAxis.orientation = 'right';
    this.yAxisRight = new DataAxis(this.body, this.options.dataAxis, this.svg, this.options.groups);
    delete this.options.dataAxis.orientation;

    // legends
    this.legendLeft = new Legend(this.body, this.options.legend, 'left', this.options.groups);
    this.legendRight = new Legend(this.body, this.options.legend, 'right', this.options.groups);

    this.show();
  };

  /**
   * set the options of the LineGraph. the mergeOptions is used for subObjects that have an enabled element.
   * @param {object} options
   */
  LineGraph.prototype.setOptions = function (options) {
    if (options) {
      var fields = ['sampling', 'defaultGroup', 'stack', 'height', 'graphHeight', 'yAxisOrientation', 'style', 'barChart', 'dataAxis', 'sort', 'groups'];
      if (options.graphHeight === undefined && options.height !== undefined) {
        this.updateSVGheight = true;
        this.updateSVGheightOnResize = true;
      } else if (this.body.domProps.centerContainer.height !== undefined && options.graphHeight !== undefined) {
        if (parseInt((options.graphHeight + '').replace("px", '')) < this.body.domProps.centerContainer.height) {
          this.updateSVGheight = true;
        }
      }
      util.selectiveDeepExtend(fields, this.options, options);
      util.mergeOptions(this.options, options, 'interpolation');
      util.mergeOptions(this.options, options, 'drawPoints');
      util.mergeOptions(this.options, options, 'shaded');
      util.mergeOptions(this.options, options, 'legend');

      if (options.interpolation) {
        if (typeof options.interpolation == 'object') {
          if (options.interpolation.parametrization) {
            if (options.interpolation.parametrization == 'uniform') {
              this.options.interpolation.alpha = 0;
            } else if (options.interpolation.parametrization == 'chordal') {
              this.options.interpolation.alpha = 1.0;
            } else {
              this.options.interpolation.parametrization = 'centripetal';
              this.options.interpolation.alpha = 0.5;
            }
          }
        }
      }

      if (this.yAxisLeft) {
        if (options.dataAxis !== undefined) {
          this.yAxisLeft.setOptions(this.options.dataAxis);
          this.yAxisRight.setOptions(this.options.dataAxis);
        }
      }

      if (this.legendLeft) {
        if (options.legend !== undefined) {
          this.legendLeft.setOptions(this.options.legend);
          this.legendRight.setOptions(this.options.legend);
        }
      }

      if (this.groups.hasOwnProperty(UNGROUPED)) {
        this.groups[UNGROUPED].setOptions(options);
      }
    }

    // this is used to redraw the graph if the visibility of the groups is changed.
    if (this.dom.frame) {
      //not on initial run?
      this.forceGraphUpdate = true;
      this.body.emitter.emit("_change", { queue: true });
    }
  };

  /**
   * Hide the component from the DOM
   */
  LineGraph.prototype.hide = function () {
    // remove the frame containing the items
    if (this.dom.frame.parentNode) {
      this.dom.frame.parentNode.removeChild(this.dom.frame);
    }
  };

  /**
   * Show the component in the DOM (when not already visible).
   * @return {Boolean} changed
   */
  LineGraph.prototype.show = function () {
    // show frame containing the items
    if (!this.dom.frame.parentNode) {
      this.body.dom.center.appendChild(this.dom.frame);
    }
  };

  /**
   * Set items
   * @param {vis.DataSet | null} items
   */
  LineGraph.prototype.setItems = function (items) {
    var me = this,
        ids,
        oldItemsData = this.itemsData;

    // replace the dataset
    if (!items) {
      this.itemsData = null;
    } else if (items instanceof DataSet || items instanceof DataView) {
      this.itemsData = items;
    } else {
      throw new TypeError('Data must be an instance of DataSet or DataView');
    }

    if (oldItemsData) {
      // unsubscribe from old dataset
      util.forEach(this.itemListeners, function (callback, event) {
        oldItemsData.off(event, callback);
      });

      // remove all drawn items
      ids = oldItemsData.getIds();
      this._onRemove(ids);
    }

    if (this.itemsData) {
      // subscribe to new dataset
      var id = this.id;
      util.forEach(this.itemListeners, function (callback, event) {
        me.itemsData.on(event, callback, id);
      });

      // add all new items
      ids = this.itemsData.getIds();
      this._onAdd(ids);
    }
  };

  /**
   * Set groups
   * @param {vis.DataSet} groups
   */
  LineGraph.prototype.setGroups = function (groups) {
    var me = this;
    var ids;

    // unsubscribe from current dataset
    if (this.groupsData) {
      util.forEach(this.groupListeners, function (callback, event) {
        me.groupsData.off(event, callback);
      });

      // remove all drawn groups
      ids = this.groupsData.getIds();
      this.groupsData = null;
      for (var i = 0; i < ids.length; i++) {
        this._removeGroup(ids[i]);
      }
    }

    // replace the dataset
    if (!groups) {
      this.groupsData = null;
    } else if (groups instanceof DataSet || groups instanceof DataView) {
      this.groupsData = groups;
    } else {
      throw new TypeError('Data must be an instance of DataSet or DataView');
    }

    if (this.groupsData) {
      // subscribe to new dataset
      var id = this.id;
      util.forEach(this.groupListeners, function (callback, event) {
        me.groupsData.on(event, callback, id);
      });

      // draw all ms
      ids = this.groupsData.getIds();
      this._onAddGroups(ids);
    }
  };

  LineGraph.prototype._onUpdate = function (ids) {
    this._updateAllGroupData();
  };
  LineGraph.prototype._onAdd = function (ids) {
    this._onUpdate(ids);
  };
  LineGraph.prototype._onRemove = function (ids) {
    this._onUpdate(ids);
  };
  LineGraph.prototype._onUpdateGroups = function (groupIds) {
    this._updateAllGroupData();
  };
  LineGraph.prototype._onAddGroups = function (groupIds) {
    this._onUpdateGroups(groupIds);
  };

  /**
   * this cleans the group out off the legends and the dataaxis, updates the ungrouped and updates the graph
   * @param {Array} groupIds
   * @private
   */
  LineGraph.prototype._onRemoveGroups = function (groupIds) {
    for (var i = 0; i < groupIds.length; i++) {
      this._removeGroup(groupIds[i]);
    }
    this.forceGraphUpdate = true;
    this.body.emitter.emit("_change", { queue: true });
  };

  /**
   * this cleans the group out off the legends and the dataaxis
   * @param groupId
   * @private
   */
  LineGraph.prototype._removeGroup = function (groupId) {
    if (this.groups.hasOwnProperty(groupId)) {
      if (this.groups[groupId].options.yAxisOrientation == 'right') {
        this.yAxisRight.removeGroup(groupId);
        this.legendRight.removeGroup(groupId);
        this.legendRight.redraw();
      } else {
        this.yAxisLeft.removeGroup(groupId);
        this.legendLeft.removeGroup(groupId);
        this.legendLeft.redraw();
      }
      delete this.groups[groupId];
    }
  };

  /**
   * update a group object with the group dataset entree
   *
   * @param group
   * @param groupId
   * @private
   */
  LineGraph.prototype._updateGroup = function (group, groupId) {
    if (!this.groups.hasOwnProperty(groupId)) {
      this.groups[groupId] = new GraphGroup(group, groupId, this.options, this.groupsUsingDefaultStyles);
      if (this.groups[groupId].options.yAxisOrientation == 'right') {
        this.yAxisRight.addGroup(groupId, this.groups[groupId]);
        this.legendRight.addGroup(groupId, this.groups[groupId]);
      } else {
        this.yAxisLeft.addGroup(groupId, this.groups[groupId]);
        this.legendLeft.addGroup(groupId, this.groups[groupId]);
      }
    } else {
      this.groups[groupId].update(group);
      if (this.groups[groupId].options.yAxisOrientation == 'right') {
        this.yAxisRight.updateGroup(groupId, this.groups[groupId]);
        this.legendRight.updateGroup(groupId, this.groups[groupId]);
        //If yAxisOrientation changed, clean out the group from the other axis.
        this.yAxisLeft.removeGroup(groupId);
        this.legendLeft.removeGroup(groupId);
      } else {
        this.yAxisLeft.updateGroup(groupId, this.groups[groupId]);
        this.legendLeft.updateGroup(groupId, this.groups[groupId]);
        //If yAxisOrientation changed, clean out the group from the other axis.
        this.yAxisRight.removeGroup(groupId);
        this.legendRight.removeGroup(groupId);
      }
    }
    this.legendLeft.redraw();
    this.legendRight.redraw();
  };

  /**
   * this updates all groups, it is used when there is an update the the itemset.
   *
   * @private
   */
  LineGraph.prototype._updateAllGroupData = function () {
    if (this.itemsData != null) {
      var groupsContent = {};
      var items = this.itemsData.get();
      //pre-Determine array sizes, for more efficient memory claim
      var groupCounts = {};
      for (var i = 0; i < items.length; i++) {
        var item = items[i];
        var groupId = item.group;
        if (groupId === null || groupId === undefined) {
          groupId = UNGROUPED;
        }
        groupCounts.hasOwnProperty(groupId) ? groupCounts[groupId]++ : groupCounts[groupId] = 1;
      }
      //Now insert data into the arrays.
      for (var i = 0; i < items.length; i++) {
        var item = items[i];
        var groupId = item.group;
        if (groupId === null || groupId === undefined) {
          groupId = UNGROUPED;
        }
        if (!groupsContent.hasOwnProperty(groupId)) {
          groupsContent[groupId] = new Array(groupCounts[groupId]);
        }
        //Copy data (because of unmodifiable DataView input.
        var extended = util.bridgeObject(item);
        extended.x = util.convert(item.x, 'Date');
        extended.orginalY = item.y; //real Y
        extended.y = Number(item.y);

        var index = groupsContent[groupId].length - groupCounts[groupId]--;
        groupsContent[groupId][index] = extended;
      }

      //Make sure all groups are present, to allow removal of old groups
      for (var groupId in this.groups) {
        if (this.groups.hasOwnProperty(groupId)) {
          if (!groupsContent.hasOwnProperty(groupId)) {
            groupsContent[groupId] = new Array(0);
          }
        }
      }

      //Update legendas, style and axis
      for (var groupId in groupsContent) {
        if (groupsContent.hasOwnProperty(groupId)) {
          if (groupsContent[groupId].length == 0) {
            if (this.groups.hasOwnProperty(groupId)) {
              this._removeGroup(groupId);
            }
          } else {
            var group = undefined;
            if (this.groupsData != undefined) {
              group = this.groupsData.get(groupId);
            }
            if (group == undefined) {
              group = { id: groupId, content: this.options.defaultGroup + groupId };
            }
            this._updateGroup(group, groupId);
            this.groups[groupId].setItems(groupsContent[groupId]);
          }
        }
      }
      this.forceGraphUpdate = true;
      this.body.emitter.emit("_change", { queue: true });
    }
  };

  /**
   * Redraw the component, mandatory function
   * @return {boolean} Returns true if the component is resized
   */
  LineGraph.prototype.redraw = function () {
    var resized = false;

    // calculate actual size and position
    this.props.width = this.dom.frame.offsetWidth;
    this.props.height = this.body.domProps.centerContainer.height - this.body.domProps.border.top - this.body.domProps.border.bottom;

    // check if this component is resized
    resized = this._isResized() || resized;

    // check whether zoomed (in that case we need to re-stack everything)
    var visibleInterval = this.body.range.end - this.body.range.start;
    var zoomed = visibleInterval != this.lastVisibleInterval;
    this.lastVisibleInterval = visibleInterval;

    // the svg element is three times as big as the width, this allows for fully dragging left and right
    // without reloading the graph. the controls for this are bound to events in the constructor
    if (resized == true) {
      this.svg.style.width = util.option.asSize(3 * this.props.width);
      this.svg.style.left = util.option.asSize(-this.props.width);

      // if the height of the graph is set as proportional, change the height of the svg
      if ((this.options.height + '').indexOf("%") != -1 || this.updateSVGheightOnResize == true) {
        this.updateSVGheight = true;
      }
    }

    // update the height of the graph on each redraw of the graph.
    if (this.updateSVGheight == true) {
      if (this.options.graphHeight != this.props.height + 'px') {
        this.options.graphHeight = this.props.height + 'px';
        this.svg.style.height = this.props.height + 'px';
      }
      this.updateSVGheight = false;
    } else {
      this.svg.style.height = ('' + this.options.graphHeight).replace('px', '') + 'px';
    }

    // zoomed is here to ensure that animations are shown correctly.
    if (resized == true || zoomed == true || this.abortedGraphUpdate == true || this.forceGraphUpdate == true) {
      resized = this._updateGraph() || resized;
      this.forceGraphUpdate = false;
    } else {
      // move the whole svg while dragging
      if (this.lastStart != 0) {
        var offset = this.body.range.start - this.lastStart;
        var range = this.body.range.end - this.body.range.start;
        if (this.props.width != 0) {
          var rangePerPixelInv = this.props.width / range;
          var xOffset = offset * rangePerPixelInv;
          this.svg.style.left = -this.props.width - xOffset + 'px';
        }
      }
    }
    this.legendLeft.redraw();
    this.legendRight.redraw();
    return resized;
  };

  LineGraph.prototype._getSortedGroupIds = function () {
    // getting group Ids
    var grouplist = [];
    for (var groupId in this.groups) {
      if (this.groups.hasOwnProperty(groupId)) {
        var group = this.groups[groupId];
        if (group.visible == true && (this.options.groups.visibility[groupId] === undefined || this.options.groups.visibility[groupId] == true)) {
          grouplist.push({ id: groupId, zIndex: group.options.zIndex });
        }
      }
    }
    util.insertSort(grouplist, function (a, b) {
      var az = a.zIndex;
      var bz = b.zIndex;
      if (az === undefined) az = 0;
      if (bz === undefined) bz = 0;
      return az == bz ? 0 : az < bz ? -1 : 1;
    });
    var groupIds = new Array(grouplist.length);
    for (var i = 0; i < grouplist.length; i++) {
      groupIds[i] = grouplist[i].id;
    }
    return groupIds;
  };

  /**
   * Update and redraw the graph.
   *
   */
  LineGraph.prototype._updateGraph = function () {
    // reset the svg elements
    DOMutil.prepareElements(this.svgElements);
    if (this.props.width != 0 && this.itemsData != null) {
      var group, i;
      var groupRanges = {};
      var changeCalled = false;
      // this is the range of the SVG canvas
      var minDate = this.body.util.toGlobalTime(-this.body.domProps.root.width);
      var maxDate = this.body.util.toGlobalTime(2 * this.body.domProps.root.width);

      // getting group Ids
      var groupIds = this._getSortedGroupIds();
      if (groupIds.length > 0) {
        var groupsData = {};

        // fill groups data, this only loads the data we require based on the timewindow
        this._getRelevantData(groupIds, groupsData, minDate, maxDate);

        // apply sampling, if disabled, it will pass through this function.
        this._applySampling(groupIds, groupsData);

        // we transform the X coordinates to detect collisions
        for (i = 0; i < groupIds.length; i++) {
          this._convertXcoordinates(groupsData[groupIds[i]]);
        }

        // now all needed data has been collected we start the processing.
        this._getYRanges(groupIds, groupsData, groupRanges);

        // update the Y axis first, we use this data to draw at the correct Y points
        changeCalled = this._updateYAxis(groupIds, groupRanges);

        //  at changeCalled, abort this update cycle as the graph needs another update with new Width input from the Redraw container.
        //  Cleanup SVG elements on abort.
        if (changeCalled == true) {
          DOMutil.cleanupElements(this.svgElements);
          this.abortedGraphUpdate = true;
          return true;
        }
        this.abortedGraphUpdate = false;

        // With the yAxis scaled correctly, use this to get the Y values of the points.
        var below = undefined;
        for (i = 0; i < groupIds.length; i++) {
          group = this.groups[groupIds[i]];
          if (this.options.stack === true && this.options.style === 'line') {
            if (group.options.excludeFromStacking == undefined || !group.options.excludeFromStacking) {
              if (below != undefined) {
                this._stack(groupsData[group.id], groupsData[below.id]);
                if (group.options.shaded.enabled == true && group.options.shaded.orientation !== "group") {
                  if (group.options.shaded.orientation == "top" && below.options.shaded.orientation !== "group") {
                    below.options.shaded.orientation = "group";
                    below.options.shaded.groupId = group.id;
                  } else {
                    group.options.shaded.orientation = "group";
                    group.options.shaded.groupId = below.id;
                  }
                }
              }
              below = group;
            }
          }
          this._convertYcoordinates(groupsData[groupIds[i]], group);
        }

        //Precalculate paths and draw shading if appropriate. This will make sure the shading is always behind any lines.
        var paths = {};
        for (i = 0; i < groupIds.length; i++) {
          group = this.groups[groupIds[i]];
          if (group.options.style === 'line' && group.options.shaded.enabled == true) {
            var dataset = groupsData[groupIds[i]];
            if (dataset == null || dataset.length == 0) {
              continue;
            }
            if (!paths.hasOwnProperty(groupIds[i])) {
              paths[groupIds[i]] = Lines.calcPath(dataset, group);
            }
            if (group.options.shaded.orientation === "group") {
              var subGroupId = group.options.shaded.groupId;
              if (groupIds.indexOf(subGroupId) === -1) {
                console.log(group.id + ": Unknown shading group target given:" + subGroupId);
                continue;
              }
              if (!paths.hasOwnProperty(subGroupId)) {
                paths[subGroupId] = Lines.calcPath(groupsData[subGroupId], this.groups[subGroupId]);
              }
              Lines.drawShading(paths[groupIds[i]], group, paths[subGroupId], this.framework);
            } else {
              Lines.drawShading(paths[groupIds[i]], group, undefined, this.framework);
            }
          }
        }

        // draw the groups, calculating paths if still necessary.
        Bars.draw(groupIds, groupsData, this.framework);
        for (i = 0; i < groupIds.length; i++) {
          group = this.groups[groupIds[i]];
          if (groupsData[groupIds[i]].length > 0) {
            switch (group.options.style) {
              case "line":
                if (!paths.hasOwnProperty(groupIds[i])) {
                  paths[groupIds[i]] = Lines.calcPath(groupsData[groupIds[i]], group);
                }
                Lines.draw(paths[groupIds[i]], group, this.framework);
              //explicit no break;
              case "point":
              //explicit no break;
              case "points":
                if (group.options.style == "point" || group.options.style == "points" || group.options.drawPoints.enabled == true) {
                  Points.draw(groupsData[groupIds[i]], group, this.framework);
                }
                break;
              case "bar":
              // bar needs to be drawn enmasse
              //explicit no break
              default:
              //do nothing...
            }
          }
        }
      }
    }

    // cleanup unused svg elements
    DOMutil.cleanupElements(this.svgElements);
    return false;
  };

  LineGraph.prototype._stack = function (data, subData) {
    var index, dx, dy, subPrevPoint, subNextPoint;
    index = 0;
    // for each data point we look for a matching on in the set below
    for (var j = 0; j < data.length; j++) {
      subPrevPoint = undefined;
      subNextPoint = undefined;
      // we look for time matches or a before-after point
      for (var k = index; k < subData.length; k++) {
        // if times match exactly
        if (subData[k].x === data[j].x) {
          subPrevPoint = subData[k];
          subNextPoint = subData[k];
          index = k;
          break;
        } else if (subData[k].x > data[j].x) {
          // overshoot
          subNextPoint = subData[k];
          if (k == 0) {
            subPrevPoint = subNextPoint;
          } else {
            subPrevPoint = subData[k - 1];
          }
          index = k;
          break;
        }
      }
      // in case the last data point has been used, we assume it stays like this.
      if (subNextPoint === undefined) {
        subPrevPoint = subData[subData.length - 1];
        subNextPoint = subData[subData.length - 1];
      }
      // linear interpolation
      dx = subNextPoint.x - subPrevPoint.x;
      dy = subNextPoint.y - subPrevPoint.y;
      if (dx == 0) {
        data[j].y = data[j].orginalY + subNextPoint.y;
      } else {
        data[j].y = data[j].orginalY + dy / dx * (data[j].x - subPrevPoint.x) + subPrevPoint.y; // ax + b where b is data[j].y
      }
    }
  };

  /**
   * first select and preprocess the data from the datasets.
   * the groups have their preselection of data, we now loop over this data to see
   * what data we need to draw. Sorted data is much faster.
   * more optimization is possible by doing the sampling before and using the binary search
   * to find the end date to determine the increment.
   *
   * @param {array}  groupIds
   * @param {object} groupsData
   * @param {date}   minDate
   * @param {date}   maxDate
   * @private
   */
  LineGraph.prototype._getRelevantData = function (groupIds, groupsData, minDate, maxDate) {
    var group, i, j, item;
    if (groupIds.length > 0) {
      for (i = 0; i < groupIds.length; i++) {
        group = this.groups[groupIds[i]];
        var itemsData = group.getItems();
        // optimization for sorted data
        if (group.options.sort == true) {
          var dateComparator = function dateComparator(a, b) {
            return a.getTime() == b.getTime() ? 0 : a < b ? -1 : 1;
          };
          var first = Math.max(0, util.binarySearchValue(itemsData, minDate, 'x', 'before', dateComparator));
          var last = Math.min(itemsData.length, util.binarySearchValue(itemsData, maxDate, 'x', 'after', dateComparator) + 1);
          if (last <= 0) {
            last = itemsData.length;
          }
          var dataContainer = new Array(last - first);
          for (j = first; j < last; j++) {
            item = group.itemsData[j];
            dataContainer[j - first] = item;
          }
          groupsData[groupIds[i]] = dataContainer;
        } else {
          // If unsorted data, all data is relevant, just returning entire structure
          groupsData[groupIds[i]] = group.itemsData;
        }
      }
    }
  };

  /**
   *
   * @param groupIds
   * @param groupsData
   * @private
   */
  LineGraph.prototype._applySampling = function (groupIds, groupsData) {
    var group;
    if (groupIds.length > 0) {
      for (var i = 0; i < groupIds.length; i++) {
        group = this.groups[groupIds[i]];
        if (group.options.sampling == true) {
          var dataContainer = groupsData[groupIds[i]];
          if (dataContainer.length > 0) {
            var increment = 1;
            var amountOfPoints = dataContainer.length;

            // the global screen is used because changing the width of the yAxis may affect the increment, resulting in an endless loop
            // of width changing of the yAxis.
            var xDistance = this.body.util.toGlobalScreen(dataContainer[dataContainer.length - 1].x) - this.body.util.toGlobalScreen(dataContainer[0].x);
            var pointsPerPixel = amountOfPoints / xDistance;
            increment = Math.min(Math.ceil(0.2 * amountOfPoints), Math.max(1, Math.round(pointsPerPixel)));

            var sampledData = new Array(amountOfPoints);
            for (var j = 0; j < amountOfPoints; j += increment) {
              var idx = Math.round(j / increment);
              sampledData[idx] = dataContainer[j];
            }
            groupsData[groupIds[i]] = sampledData.splice(0, Math.round(amountOfPoints / increment));
          }
        }
      }
    }
  };

  /**
   *
   *
   * @param {array}  groupIds
   * @param {object} groupsData
   * @param {object} groupRanges  | this is being filled here
   * @private
   */
  LineGraph.prototype._getYRanges = function (groupIds, groupsData, groupRanges) {
    var groupData, group, i;
    var combinedDataLeft = [];
    var combinedDataRight = [];
    var options;
    if (groupIds.length > 0) {
      for (i = 0; i < groupIds.length; i++) {
        groupData = groupsData[groupIds[i]];
        options = this.groups[groupIds[i]].options;
        if (groupData.length > 0) {
          group = this.groups[groupIds[i]];
          // if bar graphs are stacked, their range need to be handled differently and accumulated over all groups.
          if (options.stack === true && options.style === 'bar') {
            if (options.yAxisOrientation === 'left') {
              combinedDataLeft = combinedDataLeft.concat(group.getItems());
            } else {
              combinedDataRight = combinedDataRight.concat(group.getItems());
            }
          } else {
            groupRanges[groupIds[i]] = group.getYRange(groupData, groupIds[i]);
          }
        }
      }

      // if bar graphs are stacked, their range need to be handled differently and accumulated over all groups.
      Bars.getStackedYRange(combinedDataLeft, groupRanges, groupIds, '__barStackLeft', 'left');
      Bars.getStackedYRange(combinedDataRight, groupRanges, groupIds, '__barStackRight', 'right');
    }
  };

  /**
   * this sets the Y ranges for the Y axis. It also determines which of the axis should be shown or hidden.
   * @param {Array} groupIds
   * @param {Object} groupRanges
   * @private
   */
  LineGraph.prototype._updateYAxis = function (groupIds, groupRanges) {
    var resized = false;
    var yAxisLeftUsed = false;
    var yAxisRightUsed = false;
    var minLeft = 1e9,
        minRight = 1e9,
        maxLeft = -1e9,
        maxRight = -1e9,
        minVal,
        maxVal;
    // if groups are present
    if (groupIds.length > 0) {
      // this is here to make sure that if there are no items in the axis but there are groups, that there is no infinite draw/redraw loop.
      for (var i = 0; i < groupIds.length; i++) {
        var group = this.groups[groupIds[i]];
        if (group && group.options.yAxisOrientation != 'right') {
          yAxisLeftUsed = true;
          minLeft = 1e9;
          maxLeft = -1e9;
        } else if (group && group.options.yAxisOrientation) {
          yAxisRightUsed = true;
          minRight = 1e9;
          maxRight = -1e9;
        }
      }

      // if there are items:
      for (var i = 0; i < groupIds.length; i++) {
        if (groupRanges.hasOwnProperty(groupIds[i])) {
          if (groupRanges[groupIds[i]].ignore !== true) {
            minVal = groupRanges[groupIds[i]].min;
            maxVal = groupRanges[groupIds[i]].max;

            if (groupRanges[groupIds[i]].yAxisOrientation != 'right') {
              yAxisLeftUsed = true;
              minLeft = minLeft > minVal ? minVal : minLeft;
              maxLeft = maxLeft < maxVal ? maxVal : maxLeft;
            } else {
              yAxisRightUsed = true;
              minRight = minRight > minVal ? minVal : minRight;
              maxRight = maxRight < maxVal ? maxVal : maxRight;
            }
          }
        }
      }

      if (yAxisLeftUsed == true) {
        this.yAxisLeft.setRange(minLeft, maxLeft);
      }
      if (yAxisRightUsed == true) {
        this.yAxisRight.setRange(minRight, maxRight);
      }
    }
    resized = this._toggleAxisVisiblity(yAxisLeftUsed, this.yAxisLeft) || resized;
    resized = this._toggleAxisVisiblity(yAxisRightUsed, this.yAxisRight) || resized;

    if (yAxisRightUsed == true && yAxisLeftUsed == true) {
      this.yAxisLeft.drawIcons = true;
      this.yAxisRight.drawIcons = true;
    } else {
      this.yAxisLeft.drawIcons = false;
      this.yAxisRight.drawIcons = false;
    }
    this.yAxisRight.master = !yAxisLeftUsed;
    this.yAxisRight.masterAxis = this.yAxisLeft;

    if (this.yAxisRight.master == false) {
      if (yAxisRightUsed == true) {
        this.yAxisLeft.lineOffset = this.yAxisRight.width;
      } else {
        this.yAxisLeft.lineOffset = 0;
      }

      resized = this.yAxisLeft.redraw() || resized;
      resized = this.yAxisRight.redraw() || resized;
    } else {
      resized = this.yAxisRight.redraw() || resized;
    }

    // clean the accumulated lists
    var tempGroups = ['__barStackLeft', '__barStackRight', '__lineStackLeft', '__lineStackRight'];
    for (var i = 0; i < tempGroups.length; i++) {
      if (groupIds.indexOf(tempGroups[i]) != -1) {
        groupIds.splice(groupIds.indexOf(tempGroups[i]), 1);
      }
    }

    return resized;
  };

  /**
   * This shows or hides the Y axis if needed. If there is a change, the changed event is emitted by the updateYAxis function
   *
   * @param {boolean} axisUsed
   * @returns {boolean}
   * @private
   * @param axis
   */
  LineGraph.prototype._toggleAxisVisiblity = function (axisUsed, axis) {
    var changed = false;
    if (axisUsed == false) {
      if (axis.dom.frame.parentNode && axis.hidden == false) {
        axis.hide();
        changed = true;
      }
    } else {
      if (!axis.dom.frame.parentNode && axis.hidden == true) {
        axis.show();
        changed = true;
      }
    }
    return changed;
  };

  /**
   * This uses the DataAxis object to generate the correct X coordinate on the SVG window. It uses the
   * util function toScreen to get the x coordinate from the timestamp. It also pre-filters the data and get the minMax ranges for
   * the yAxis.
   *
   * @param datapoints
   * @returns {Array}
   * @private
   */
  LineGraph.prototype._convertXcoordinates = function (datapoints) {
    var toScreen = this.body.util.toScreen;
    for (var i = 0; i < datapoints.length; i++) {
      datapoints[i].screen_x = toScreen(datapoints[i].x) + this.props.width;
      datapoints[i].screen_y = datapoints[i].y; //starting point for range calculations
    }
  };

  /**
   * This uses the DataAxis object to generate the correct X coordinate on the SVG window. It uses the
   * util function toScreen to get the x coordinate from the timestamp. It also pre-filters the data and get the minMax ranges for
   * the yAxis.
   *
   * @param datapoints
   * @param group
   * @returns {Array}
   * @private
   */
  LineGraph.prototype._convertYcoordinates = function (datapoints, group) {
    var axis = this.yAxisLeft;
    var svgHeight = Number(this.svg.style.height.replace('px', ''));
    if (group.options.yAxisOrientation == 'right') {
      axis = this.yAxisRight;
    }
    for (var i = 0; i < datapoints.length; i++) {
      datapoints[i].screen_y = Math.round(axis.convertValue(datapoints[i].y));
    }
    group.setZeroPosition(Math.min(svgHeight, axis.convertValue(0)));
  };

  module.exports = LineGraph;

/***/ },
/* 50 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var DOMutil = __webpack_require__(7);
  var Component = __webpack_require__(25);
  var DataScale = __webpack_require__(51);
  /**
   * A horizontal time axis
   * @param {Object} [options]        See DataAxis.setOptions for the available
   *                                  options.
   * @constructor DataAxis
   * @extends Component
   * @param body
   */
  function DataAxis(body, options, svg, linegraphOptions) {
    this.id = util.randomUUID();
    this.body = body;

    this.defaultOptions = {
      orientation: 'left', // supported: 'left', 'right'
      showMinorLabels: true,
      showMajorLabels: true,
      icons: false,
      majorLinesOffset: 7,
      minorLinesOffset: 4,
      labelOffsetX: 10,
      labelOffsetY: 2,
      iconWidth: 20,
      width: '40px',
      visible: true,
      alignZeros: true,
      left: {
        range: { min: undefined, max: undefined },
        format: function format(value) {
          return '' + Number.parseFloat(value.toPrecision(3));
        },
        title: { text: undefined, style: undefined }
      },
      right: {
        range: { min: undefined, max: undefined },
        format: function format(value) {
          return '' + Number.parseFloat(value.toPrecision(3));
        },
        title: { text: undefined, style: undefined }
      }
    };

    this.linegraphOptions = linegraphOptions;
    this.linegraphSVG = svg;
    this.props = {};
    this.DOMelements = { // dynamic elements
      lines: {},
      labels: {},
      title: {}
    };

    this.dom = {};
    this.scale = undefined;
    this.range = { start: 0, end: 0 };

    this.options = util.extend({}, this.defaultOptions);
    this.conversionFactor = 1;

    this.setOptions(options);
    this.width = Number(('' + this.options.width).replace("px", ""));
    this.minWidth = this.width;
    this.height = this.linegraphSVG.getBoundingClientRect().height;
    this.hidden = false;

    this.stepPixels = 25;
    this.zeroCrossing = -1;
    this.amountOfSteps = -1;

    this.lineOffset = 0;
    this.master = true;
    this.masterAxis = null;
    this.svgElements = {};
    this.iconsRemoved = false;

    this.groups = {};
    this.amountOfGroups = 0;

    // create the HTML DOM
    this._create();
    this.framework = { svg: this.svg, svgElements: this.svgElements, options: this.options, groups: this.groups };

    var me = this;
    this.body.emitter.on("verticalDrag", function () {
      me.dom.lineContainer.style.top = me.body.domProps.scrollTop + 'px';
    });
  }

  DataAxis.prototype = new Component();

  DataAxis.prototype.addGroup = function (label, graphOptions) {
    if (!this.groups.hasOwnProperty(label)) {
      this.groups[label] = graphOptions;
    }
    this.amountOfGroups += 1;
  };

  DataAxis.prototype.updateGroup = function (label, graphOptions) {
    if (!this.groups.hasOwnProperty(label)) {
      this.amountOfGroups += 1;
    }
    this.groups[label] = graphOptions;
  };

  DataAxis.prototype.removeGroup = function (label) {
    if (this.groups.hasOwnProperty(label)) {
      delete this.groups[label];
      this.amountOfGroups -= 1;
    }
  };

  DataAxis.prototype.setOptions = function (options) {
    if (options) {
      var redraw = false;
      if (this.options.orientation != options.orientation && options.orientation !== undefined) {
        redraw = true;
      }
      var fields = ['orientation', 'showMinorLabels', 'showMajorLabels', 'icons', 'majorLinesOffset', 'minorLinesOffset', 'labelOffsetX', 'labelOffsetY', 'iconWidth', 'width', 'visible', 'left', 'right', 'alignZeros'];
      util.selectiveDeepExtend(fields, this.options, options);

      this.minWidth = Number(('' + this.options.width).replace("px", ""));
      if (redraw === true && this.dom.frame) {
        this.hide();
        this.show();
      }
    }
  };

  /**
   * Create the HTML DOM for the DataAxis
   */
  DataAxis.prototype._create = function () {
    this.dom.frame = document.createElement('div');
    this.dom.frame.style.width = this.options.width;
    this.dom.frame.style.height = this.height;

    this.dom.lineContainer = document.createElement('div');
    this.dom.lineContainer.style.width = '100%';
    this.dom.lineContainer.style.height = this.height;
    this.dom.lineContainer.style.position = 'relative';

    // create svg element for graph drawing.
    this.svg = document.createElementNS('http://www.w3.org/2000/svg', "svg");
    this.svg.style.position = "absolute";
    this.svg.style.top = '0px';
    this.svg.style.height = '100%';
    this.svg.style.width = '100%';
    this.svg.style.display = "block";
    this.dom.frame.appendChild(this.svg);
  };

  DataAxis.prototype._redrawGroupIcons = function () {
    DOMutil.prepareElements(this.svgElements);

    var x;
    var iconWidth = this.options.iconWidth;
    var iconHeight = 15;
    var iconOffset = 4;
    var y = iconOffset + 0.5 * iconHeight;

    if (this.options.orientation === 'left') {
      x = iconOffset;
    } else {
      x = this.width - iconWidth - iconOffset;
    }

    var groupArray = Object.keys(this.groups);
    groupArray.sort(function (a, b) {
      return a < b ? -1 : 1;
    });

    for (var i = 0; i < groupArray.length; i++) {
      var groupId = groupArray[i];
      if (this.groups[groupId].visible === true && (this.linegraphOptions.visibility[groupId] === undefined || this.linegraphOptions.visibility[groupId] === true)) {
        this.groups[groupId].getLegend(iconWidth, iconHeight, this.framework, x, y);
        y += iconHeight + iconOffset;
      }
    }

    DOMutil.cleanupElements(this.svgElements);
    this.iconsRemoved = false;
  };

  DataAxis.prototype._cleanupIcons = function () {
    if (this.iconsRemoved === false) {
      DOMutil.prepareElements(this.svgElements);
      DOMutil.cleanupElements(this.svgElements);
      this.iconsRemoved = true;
    }
  };

  /**
   * Create the HTML DOM for the DataAxis
   */
  DataAxis.prototype.show = function () {
    this.hidden = false;
    if (!this.dom.frame.parentNode) {
      if (this.options.orientation === 'left') {
        this.body.dom.left.appendChild(this.dom.frame);
      } else {
        this.body.dom.right.appendChild(this.dom.frame);
      }
    }

    if (!this.dom.lineContainer.parentNode) {
      this.body.dom.backgroundHorizontal.appendChild(this.dom.lineContainer);
    }
  };

  /**
   * Create the HTML DOM for the DataAxis
   */
  DataAxis.prototype.hide = function () {
    this.hidden = true;
    if (this.dom.frame.parentNode) {
      this.dom.frame.parentNode.removeChild(this.dom.frame);
    }

    if (this.dom.lineContainer.parentNode) {
      this.dom.lineContainer.parentNode.removeChild(this.dom.lineContainer);
    }
  };

  /**
   * Set a range (start and end)
   * @param end
   * @param start
   * @param end
   */
  DataAxis.prototype.setRange = function (start, end) {
    this.range.start = start;
    this.range.end = end;
  };

  /**
   * Repaint the component
   * @return {boolean} Returns true if the component is resized
   */
  DataAxis.prototype.redraw = function () {
    var resized = false;
    var activeGroups = 0;

    // Make sure the line container adheres to the vertical scrolling.
    this.dom.lineContainer.style.top = this.body.domProps.scrollTop + 'px';

    for (var groupId in this.groups) {
      if (this.groups.hasOwnProperty(groupId)) {
        if (this.groups[groupId].visible === true && (this.linegraphOptions.visibility[groupId] === undefined || this.linegraphOptions.visibility[groupId] === true)) {
          activeGroups++;
        }
      }
    }
    if (this.amountOfGroups === 0 || activeGroups === 0) {
      this.hide();
    } else {
      this.show();
      this.height = Number(this.linegraphSVG.style.height.replace("px", ""));

      // svg offsetheight did not work in firefox and explorer...
      this.dom.lineContainer.style.height = this.height + 'px';
      this.width = this.options.visible === true ? Number(('' + this.options.width).replace("px", "")) : 0;

      var props = this.props;
      var frame = this.dom.frame;

      // update classname
      frame.className = 'vis-data-axis';

      // calculate character width and height
      this._calculateCharSize();

      var orientation = this.options.orientation;
      var showMinorLabels = this.options.showMinorLabels;
      var showMajorLabels = this.options.showMajorLabels;

      // determine the width and height of the elements for the axis
      props.minorLabelHeight = showMinorLabels ? props.minorCharHeight : 0;
      props.majorLabelHeight = showMajorLabels ? props.majorCharHeight : 0;

      props.minorLineWidth = this.body.dom.backgroundHorizontal.offsetWidth - this.lineOffset - this.width + 2 * this.options.minorLinesOffset;
      props.minorLineHeight = 1;
      props.majorLineWidth = this.body.dom.backgroundHorizontal.offsetWidth - this.lineOffset - this.width + 2 * this.options.majorLinesOffset;
      props.majorLineHeight = 1;

      //  take frame offline while updating (is almost twice as fast)
      if (orientation === 'left') {
        frame.style.top = '0';
        frame.style.left = '0';
        frame.style.bottom = '';
        frame.style.width = this.width + 'px';
        frame.style.height = this.height + "px";
        this.props.width = this.body.domProps.left.width;
        this.props.height = this.body.domProps.left.height;
      } else {
        // right
        frame.style.top = '';
        frame.style.bottom = '0';
        frame.style.left = '0';
        frame.style.width = this.width + 'px';
        frame.style.height = this.height + "px";
        this.props.width = this.body.domProps.right.width;
        this.props.height = this.body.domProps.right.height;
      }

      resized = this._redrawLabels();
      resized = this._isResized() || resized;

      if (this.options.icons === true) {
        this._redrawGroupIcons();
      } else {
        this._cleanupIcons();
      }

      this._redrawTitle(orientation);
    }
    return resized;
  };

  /**
   * Repaint major and minor text labels and vertical grid lines
   * @private
   */
  DataAxis.prototype._redrawLabels = function () {
    var _this = this;

    var resized = false;
    DOMutil.prepareElements(this.DOMelements.lines);
    DOMutil.prepareElements(this.DOMelements.labels);
    var orientation = this.options['orientation'];
    var customRange = this.options[orientation].range != undefined ? this.options[orientation].range : {};

    //Override range with manual options:
    var autoScaleEnd = true;
    if (customRange.max != undefined) {
      this.range.end = customRange.max;
      autoScaleEnd = false;
    }
    var autoScaleStart = true;
    if (customRange.min != undefined) {
      this.range.start = customRange.min;
      autoScaleStart = false;
    }

    this.scale = new DataScale(this.range.start, this.range.end, autoScaleStart, autoScaleEnd, this.dom.frame.offsetHeight, this.props.majorCharHeight, this.options.alignZeros, this.options[orientation].format);

    if (this.master === false && this.masterAxis != undefined) {
      this.scale.followScale(this.masterAxis.scale);
    }

    //Is updated in side-effect of _redrawLabel():
    this.maxLabelSize = 0;

    var lines = this.scale.getLines();
    lines.forEach(function (line) {
      var y = line.y;
      var isMajor = line.major;
      if (_this.options['showMinorLabels'] && isMajor === false) {
        _this._redrawLabel(y - 2, line.val, orientation, 'vis-y-axis vis-minor', _this.props.minorCharHeight);
      }
      if (isMajor) {
        if (y >= 0) {
          _this._redrawLabel(y - 2, line.val, orientation, 'vis-y-axis vis-major', _this.props.majorCharHeight);
        }
      }
      if (_this.master === true) {
        if (isMajor) {
          _this._redrawLine(y, orientation, 'vis-grid vis-horizontal vis-major', _this.options.majorLinesOffset, _this.props.majorLineWidth);
        } else {
          _this._redrawLine(y, orientation, 'vis-grid vis-horizontal vis-minor', _this.options.minorLinesOffset, _this.props.minorLineWidth);
        }
      }
    });

    // Note that title is rotated, so we're using the height, not width!
    var titleWidth = 0;
    if (this.options[orientation].title !== undefined && this.options[orientation].title.text !== undefined) {
      titleWidth = this.props.titleCharHeight;
    }
    var offset = this.options.icons === true ? Math.max(this.options.iconWidth, titleWidth) + this.options.labelOffsetX + 15 : titleWidth + this.options.labelOffsetX + 15;

    // this will resize the yAxis to accommodate the labels.
    if (this.maxLabelSize > this.width - offset && this.options.visible === true) {
      this.width = this.maxLabelSize + offset;
      this.options.width = this.width + "px";
      DOMutil.cleanupElements(this.DOMelements.lines);
      DOMutil.cleanupElements(this.DOMelements.labels);
      this.redraw();
      resized = true;
    }
    // this will resize the yAxis if it is too big for the labels.
    else if (this.maxLabelSize < this.width - offset && this.options.visible === true && this.width > this.minWidth) {
        this.width = Math.max(this.minWidth, this.maxLabelSize + offset);
        this.options.width = this.width + "px";
        DOMutil.cleanupElements(this.DOMelements.lines);
        DOMutil.cleanupElements(this.DOMelements.labels);
        this.redraw();
        resized = true;
      } else {
        DOMutil.cleanupElements(this.DOMelements.lines);
        DOMutil.cleanupElements(this.DOMelements.labels);
        resized = false;
      }

    return resized;
  };

  DataAxis.prototype.convertValue = function (value) {
    return this.scale.convertValue(value);
  };

  DataAxis.prototype.screenToValue = function (x) {
    return this.scale.screenToValue(x);
  };

  /**
   * Create a label for the axis at position x
   * @private
   * @param y
   * @param text
   * @param orientation
   * @param className
   * @param characterHeight
   */
  DataAxis.prototype._redrawLabel = function (y, text, orientation, className, characterHeight) {
    // reuse redundant label
    var label = DOMutil.getDOMElement('div', this.DOMelements.labels, this.dom.frame); //this.dom.redundant.labels.shift();
    label.className = className;
    label.innerHTML = text;
    if (orientation === 'left') {
      label.style.left = '-' + this.options.labelOffsetX + 'px';
      label.style.textAlign = "right";
    } else {
      label.style.right = '-' + this.options.labelOffsetX + 'px';
      label.style.textAlign = "left";
    }

    label.style.top = y - 0.5 * characterHeight + this.options.labelOffsetY + 'px';

    text += '';

    var largestWidth = Math.max(this.props.majorCharWidth, this.props.minorCharWidth);
    if (this.maxLabelSize < text.length * largestWidth) {
      this.maxLabelSize = text.length * largestWidth;
    }
  };

  /**
   * Create a minor line for the axis at position y
   * @param y
   * @param orientation
   * @param className
   * @param offset
   * @param width
   */
  DataAxis.prototype._redrawLine = function (y, orientation, className, offset, width) {
    if (this.master === true) {
      var line = DOMutil.getDOMElement('div', this.DOMelements.lines, this.dom.lineContainer); //this.dom.redundant.lines.shift();
      line.className = className;
      line.innerHTML = '';

      if (orientation === 'left') {
        line.style.left = this.width - offset + 'px';
      } else {
        line.style.right = this.width - offset + 'px';
      }

      line.style.width = width + 'px';
      line.style.top = y + 'px';
    }
  };

  /**
   * Create a title for the axis
   * @private
   * @param orientation
   */
  DataAxis.prototype._redrawTitle = function (orientation) {
    DOMutil.prepareElements(this.DOMelements.title);

    // Check if the title is defined for this axes
    if (this.options[orientation].title !== undefined && this.options[orientation].title.text !== undefined) {
      var title = DOMutil.getDOMElement('div', this.DOMelements.title, this.dom.frame);
      title.className = 'vis-y-axis vis-title vis-' + orientation;
      title.innerHTML = this.options[orientation].title.text;

      // Add style - if provided
      if (this.options[orientation].title.style !== undefined) {
        util.addCssText(title, this.options[orientation].title.style);
      }

      if (orientation === 'left') {
        title.style.left = this.props.titleCharHeight + 'px';
      } else {
        title.style.right = this.props.titleCharHeight + 'px';
      }

      title.style.width = this.height + 'px';
    }

    // we need to clean up in case we did not use all elements.
    DOMutil.cleanupElements(this.DOMelements.title);
  };

  /**
   * Determine the size of text on the axis (both major and minor axis).
   * The size is calculated only once and then cached in this.props.
   * @private
   */
  DataAxis.prototype._calculateCharSize = function () {
    // determine the char width and height on the minor axis
    if (!('minorCharHeight' in this.props)) {
      var textMinor = document.createTextNode('0');
      var measureCharMinor = document.createElement('div');
      measureCharMinor.className = 'vis-y-axis vis-minor vis-measure';
      measureCharMinor.appendChild(textMinor);
      this.dom.frame.appendChild(measureCharMinor);

      this.props.minorCharHeight = measureCharMinor.clientHeight;
      this.props.minorCharWidth = measureCharMinor.clientWidth;

      this.dom.frame.removeChild(measureCharMinor);
    }

    if (!('majorCharHeight' in this.props)) {
      var textMajor = document.createTextNode('0');
      var measureCharMajor = document.createElement('div');
      measureCharMajor.className = 'vis-y-axis vis-major vis-measure';
      measureCharMajor.appendChild(textMajor);
      this.dom.frame.appendChild(measureCharMajor);

      this.props.majorCharHeight = measureCharMajor.clientHeight;
      this.props.majorCharWidth = measureCharMajor.clientWidth;

      this.dom.frame.removeChild(measureCharMajor);
    }

    if (!('titleCharHeight' in this.props)) {
      var textTitle = document.createTextNode('0');
      var measureCharTitle = document.createElement('div');
      measureCharTitle.className = 'vis-y-axis vis-title vis-measure';
      measureCharTitle.appendChild(textTitle);
      this.dom.frame.appendChild(measureCharTitle);

      this.props.titleCharHeight = measureCharTitle.clientHeight;
      this.props.titleCharWidth = measureCharTitle.clientWidth;

      this.dom.frame.removeChild(measureCharTitle);
    }
  };

  module.exports = DataAxis;

/***/ },
/* 51 */
/***/ function(module, exports) {

  /**
   * Created by ludo on 25-1-16.
   */

  'use strict';

  function DataScale(start, end, autoScaleStart, autoScaleEnd, containerHeight, majorCharHeight) {
    var zeroAlign = arguments.length <= 6 || arguments[6] === undefined ? false : arguments[6];
    var formattingFunction = arguments.length <= 7 || arguments[7] === undefined ? false : arguments[7];

    this.majorSteps = [1, 2, 5, 10];
    this.minorSteps = [0.25, 0.5, 1, 2];
    this.customLines = null;

    this.containerHeight = containerHeight;
    this.majorCharHeight = majorCharHeight;
    this._start = start;
    this._end = end;

    this.scale = 1;
    this.minorStepIdx = -1;
    this.magnitudefactor = 1;
    this.determineScale();

    this.zeroAlign = zeroAlign;
    this.autoScaleStart = autoScaleStart;
    this.autoScaleEnd = autoScaleEnd;

    this.formattingFunction = formattingFunction;

    if (autoScaleStart || autoScaleEnd) {
      var me = this;
      var roundToMinor = function roundToMinor(value) {
        var rounded = value - value % (me.magnitudefactor * me.minorSteps[me.minorStepIdx]);
        if (value % (me.magnitudefactor * me.minorSteps[me.minorStepIdx]) > 0.5 * (me.magnitudefactor * me.minorSteps[me.minorStepIdx])) {
          return rounded + me.magnitudefactor * me.minorSteps[me.minorStepIdx];
        } else {
          return rounded;
        }
      };
      if (autoScaleStart) {
        this._start -= this.magnitudefactor * 2 * this.minorSteps[this.minorStepIdx];
        this._start = roundToMinor(this._start);
      }

      if (autoScaleEnd) {
        this._end += this.magnitudefactor * this.minorSteps[this.minorStepIdx];
        this._end = roundToMinor(this._end);
      }
      this.determineScale();
    }
  }

  DataScale.prototype.setCharHeight = function (majorCharHeight) {
    this.majorCharHeight = majorCharHeight;
  };

  DataScale.prototype.setHeight = function (containerHeight) {
    this.containerHeight = containerHeight;
  };

  DataScale.prototype.determineScale = function () {
    var range = this._end - this._start;
    this.scale = this.containerHeight / range;
    var minimumStepValue = this.majorCharHeight / this.scale;
    var orderOfMagnitude = Math.round(Math.log(range) / Math.LN10);

    this.minorStepIdx = -1;
    this.magnitudefactor = Math.pow(10, orderOfMagnitude);

    var start = 0;
    if (orderOfMagnitude < 0) {
      start = orderOfMagnitude;
    }

    var solutionFound = false;
    for (var l = start; Math.abs(l) <= Math.abs(orderOfMagnitude); l++) {
      this.magnitudefactor = Math.pow(10, l);
      for (var j = 0; j < this.minorSteps.length; j++) {
        var stepSize = this.magnitudefactor * this.minorSteps[j];
        if (stepSize >= minimumStepValue) {
          solutionFound = true;
          this.minorStepIdx = j;
          break;
        }
      }
      if (solutionFound === true) {
        break;
      }
    }
  };

  DataScale.prototype.is_major = function (value) {
    return value % (this.magnitudefactor * this.majorSteps[this.minorStepIdx]) === 0;
  };

  DataScale.prototype.getStep = function () {
    return this.magnitudefactor * this.minorSteps[this.minorStepIdx];
  };

  DataScale.prototype.getFirstMajor = function () {
    var majorStep = this.magnitudefactor * this.majorSteps[this.minorStepIdx];
    return this.convertValue(this._start + (majorStep - this._start % majorStep) % majorStep);
  };

  DataScale.prototype.formatValue = function (current) {
    var returnValue = current.toPrecision(5);
    if (typeof this.formattingFunction === 'function') {
      returnValue = this.formattingFunction(current);
    }

    if (typeof returnValue === 'number') {
      return '' + returnValue;
    } else if (typeof returnValue === 'string') {
      return returnValue;
    } else {
      return current.toPrecision(5);
    }
  };

  DataScale.prototype.getLines = function () {
    var lines = [];
    var step = this.getStep();
    var bottomOffset = (step - this._start % step) % step;
    for (var i = this._start + bottomOffset; this._end - i > 0.00001; i += step) {
      if (i != this._start) {
        //Skip the bottom line
        lines.push({ major: this.is_major(i), y: this.convertValue(i), val: this.formatValue(i) });
      }
    }
    return lines;
  };

  DataScale.prototype.followScale = function (other) {
    var oldStepIdx = this.minorStepIdx;
    var oldStart = this._start;
    var oldEnd = this._end;

    var me = this;
    var increaseMagnitude = function increaseMagnitude() {
      me.magnitudefactor *= 2;
    };
    var decreaseMagnitude = function decreaseMagnitude() {
      me.magnitudefactor /= 2;
    };

    if (other.minorStepIdx <= 1 && this.minorStepIdx <= 1 || other.minorStepIdx > 1 && this.minorStepIdx > 1) {
      //easy, no need to change stepIdx nor multiplication factor
    } else if (other.minorStepIdx < this.minorStepIdx) {
        //I'm 5, they are 4 per major.
        this.minorStepIdx = 1;
        if (oldStepIdx == 2) {
          increaseMagnitude();
        } else {
          increaseMagnitude();
          increaseMagnitude();
        }
      } else {
        //I'm 4, they are 5 per major
        this.minorStepIdx = 2;
        if (oldStepIdx == 1) {
          decreaseMagnitude();
        } else {
          decreaseMagnitude();
          decreaseMagnitude();
        }
      }

    //Get masters stats:
    var lines = other.getLines();
    var otherZero = other.convertValue(0);
    var otherStep = other.getStep() * other.scale;

    var done = false;
    var count = 0;
    //Loop until magnitude is correct for given constrains.
    while (!done && count++ < 5) {

      //Get my stats:
      this.scale = otherStep / (this.minorSteps[this.minorStepIdx] * this.magnitudefactor);
      var newRange = this.containerHeight / this.scale;

      //For the case the magnitudefactor has changed:
      this._start = oldStart;
      this._end = this._start + newRange;

      var myOriginalZero = this._end * this.scale;
      var majorStep = this.magnitudefactor * this.majorSteps[this.minorStepIdx];
      var majorOffset = this.getFirstMajor() - other.getFirstMajor();

      if (this.zeroAlign) {
        var zeroOffset = otherZero - myOriginalZero;
        this._end += zeroOffset / this.scale;
        this._start = this._end - newRange;
      } else {
        if (!this.autoScaleStart) {
          this._start += majorStep - majorOffset / this.scale;
          this._end = this._start + newRange;
        } else {
          this._start -= majorOffset / this.scale;
          this._end = this._start + newRange;
        }
      }
      if (!this.autoScaleEnd && this._end > oldEnd + 0.00001) {
        //Need to decrease magnitude to prevent scale overshoot! (end)
        decreaseMagnitude();
        done = false;
        continue;
      }
      if (!this.autoScaleStart && this._start < oldStart - 0.00001) {
        if (this.zeroAlign && oldStart >= 0) {
          console.warn("Can't adhere to given 'min' range, due to zeroalign");
        } else {
          //Need to decrease magnitude to prevent scale overshoot! (start)
          decreaseMagnitude();
          done = false;
          continue;
        }
      }
      if (this.autoScaleStart && this.autoScaleEnd && newRange < oldEnd - oldStart) {
        increaseMagnitude();
        done = false;
        continue;
      }
      done = true;
    }
  };

  DataScale.prototype.convertValue = function (value) {
    return this.containerHeight - (value - this._start) * this.scale;
  };

  DataScale.prototype.screenToValue = function (pixels) {
    return (this.containerHeight - pixels) / this.scale + this._start;
  };

  module.exports = DataScale;

/***/ },
/* 52 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var DOMutil = __webpack_require__(7);
  var Bars = __webpack_require__(53);
  var Lines = __webpack_require__(55);
  var Points = __webpack_require__(54);

  /**
   * /**
   * @param {object} group            | the object of the group from the dataset
   * @param {string} groupId          | ID of the group
   * @param {object} options          | the default options
   * @param {array} groupsUsingDefaultStyles  | this array has one entree.
   *                                            It is passed as an array so it is passed by reference.
   *                                            It enumerates through the default styles
   * @constructor
   */
  function GraphGroup(group, groupId, options, groupsUsingDefaultStyles) {
    this.id = groupId;
    var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'drawPoints', 'shaded', 'interpolation', 'zIndex', 'excludeFromStacking', 'excludeFromLegend'];
    this.options = util.selectiveBridgeObject(fields, options);
    this.usingDefaultStyle = group.className === undefined;
    this.groupsUsingDefaultStyles = groupsUsingDefaultStyles;
    this.zeroPosition = 0;
    this.update(group);
    if (this.usingDefaultStyle == true) {
      this.groupsUsingDefaultStyles[0] += 1;
    }
    this.itemsData = [];
    this.visible = group.visible === undefined ? true : group.visible;
  }

  /**
   * this loads a reference to all items in this group into this group.
   * @param {array} items
   */
  GraphGroup.prototype.setItems = function (items) {
    if (items != null) {
      this.itemsData = items;
      if (this.options.sort == true) {
        util.insertSort(this.itemsData, function (a, b) {
          return a.x > b.x ? 1 : -1;
        });
      }
    } else {
      this.itemsData = [];
    }
  };

  GraphGroup.prototype.getItems = function () {
    return this.itemsData;
  };

  /**
   * this is used for barcharts and shading, this way, we only have to calculate it once.
   * @param pos
   */
  GraphGroup.prototype.setZeroPosition = function (pos) {
    this.zeroPosition = pos;
  };

  /**
   * set the options of the graph group over the default options.
   * @param options
   */
  GraphGroup.prototype.setOptions = function (options) {
    if (options !== undefined) {
      var fields = ['sampling', 'style', 'sort', 'yAxisOrientation', 'barChart', 'zIndex', 'excludeFromStacking', 'excludeFromLegend'];
      util.selectiveDeepExtend(fields, this.options, options);

      // if the group's drawPoints is a function delegate the callback to the onRender property
      if (typeof options.drawPoints == 'function') {
        options.drawPoints = {
          onRender: options.drawPoints
        };
      }

      util.mergeOptions(this.options, options, 'interpolation');
      util.mergeOptions(this.options, options, 'drawPoints');
      util.mergeOptions(this.options, options, 'shaded');

      if (options.interpolation) {
        if (typeof options.interpolation == 'object') {
          if (options.interpolation.parametrization) {
            if (options.interpolation.parametrization == 'uniform') {
              this.options.interpolation.alpha = 0;
            } else if (options.interpolation.parametrization == 'chordal') {
              this.options.interpolation.alpha = 1.0;
            } else {
              this.options.interpolation.parametrization = 'centripetal';
              this.options.interpolation.alpha = 0.5;
            }
          }
        }
      }
    }
  };

  /**
   * this updates the current group class with the latest group dataset entree, used in _updateGroup in linegraph
   * @param group
   */
  GraphGroup.prototype.update = function (group) {
    this.group = group;
    this.content = group.content || 'graph';
    this.className = group.className || this.className || 'vis-graph-group' + this.groupsUsingDefaultStyles[0] % 10;
    this.visible = group.visible === undefined ? true : group.visible;
    this.style = group.style;
    this.setOptions(group.options);
  };

  /**
   * return the legend entree for this group.
   *
   * @param iconWidth
   * @param iconHeight
   * @returns {{icon: HTMLElement, label: (group.content|*|string), orientation: (.options.yAxisOrientation|*)}}
   */
  GraphGroup.prototype.getLegend = function (iconWidth, iconHeight, framework, x, y) {
    if (framework == undefined || framework == null) {
      var svg = document.createElementNS('http://www.w3.org/2000/svg', "svg");
      framework = { svg: svg, svgElements: {}, options: this.options, groups: [this] };
    }
    if (x == undefined || x == null) {
      x = 0;
    }
    if (y == undefined || y == null) {
      y = 0.5 * iconHeight;
    }
    switch (this.options.style) {
      case "line":
        Lines.drawIcon(this, x, y, iconWidth, iconHeight, framework);
        break;
      case "points": //explicit no break
      case "point":
        Points.drawIcon(this, x, y, iconWidth, iconHeight, framework);
        break;
      case "bar":
        Bars.drawIcon(this, x, y, iconWidth, iconHeight, framework);
        break;
    }
    return { icon: framework.svg, label: this.content, orientation: this.options.yAxisOrientation };
  };

  GraphGroup.prototype.getYRange = function (groupData) {
    var yMin = groupData[0].y;
    var yMax = groupData[0].y;
    for (var j = 0; j < groupData.length; j++) {
      yMin = yMin > groupData[j].y ? groupData[j].y : yMin;
      yMax = yMax < groupData[j].y ? groupData[j].y : yMax;
    }
    return { min: yMin, max: yMax, yAxisOrientation: this.options.yAxisOrientation };
  };

  module.exports = GraphGroup;

/***/ },
/* 53 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var DOMutil = __webpack_require__(7);
  var Points = __webpack_require__(54);

  function Bargraph(groupId, options) {}

  Bargraph.drawIcon = function (group, x, y, iconWidth, iconHeight, framework) {
    var fillHeight = iconHeight * 0.5;
    var path, fillPath;

    var outline = DOMutil.getSVGElement("rect", framework.svgElements, framework.svg);
    outline.setAttributeNS(null, "x", x);
    outline.setAttributeNS(null, "y", y - fillHeight);
    outline.setAttributeNS(null, "width", iconWidth);
    outline.setAttributeNS(null, "height", 2 * fillHeight);
    outline.setAttributeNS(null, "class", "vis-outline");

    var barWidth = Math.round(0.3 * iconWidth);
    var originalWidth = group.options.barChart.width;
    var scale = originalWidth / barWidth;
    var bar1Height = Math.round(0.4 * iconHeight);
    var bar2Height = Math.round(0.75 * iconHeight);

    var offset = Math.round((iconWidth - 2 * barWidth) / 3);

    DOMutil.drawBar(x + 0.5 * barWidth + offset, y + fillHeight - bar1Height - 1, barWidth, bar1Height, group.className + ' vis-bar', framework.svgElements, framework.svg, group.style);
    DOMutil.drawBar(x + 1.5 * barWidth + offset + 2, y + fillHeight - bar2Height - 1, barWidth, bar2Height, group.className + ' vis-bar', framework.svgElements, framework.svg, group.style);

    if (group.options.drawPoints.enabled == true) {
      var groupTemplate = {
        style: group.options.drawPoints.style,
        styles: group.options.drawPoints.styles,
        size: group.options.drawPoints.size / scale,
        className: group.className
      };
      DOMutil.drawPoint(x + 0.5 * barWidth + offset, y + fillHeight - bar1Height - 1, groupTemplate, framework.svgElements, framework.svg);
      DOMutil.drawPoint(x + 1.5 * barWidth + offset + 2, y + fillHeight - bar2Height - 1, groupTemplate, framework.svgElements, framework.svg);
    }
  };

  /**
   * draw a bar graph
   *
   * @param groupIds
   * @param processedGroupData
   */
  Bargraph.draw = function (groupIds, processedGroupData, framework) {
    var combinedData = [];
    var intersections = {};
    var coreDistance;
    var key, drawData;
    var group;
    var i, j;
    var barPoints = 0;

    // combine all barchart data
    for (i = 0; i < groupIds.length; i++) {
      group = framework.groups[groupIds[i]];
      if (group.options.style === 'bar') {
        if (group.visible === true && (framework.options.groups.visibility[groupIds[i]] === undefined || framework.options.groups.visibility[groupIds[i]] === true)) {
          for (j = 0; j < processedGroupData[groupIds[i]].length; j++) {
            combinedData.push({
              screen_x: processedGroupData[groupIds[i]][j].screen_x,
              screen_y: processedGroupData[groupIds[i]][j].screen_y,
              x: processedGroupData[groupIds[i]][j].x,
              y: processedGroupData[groupIds[i]][j].y,
              groupId: groupIds[i],
              label: processedGroupData[groupIds[i]][j].label
            });
            barPoints += 1;
          }
        }
      }
    }

    if (barPoints === 0) {
      return;
    }

    // sort by time and by group
    combinedData.sort(function (a, b) {
      if (a.screen_x === b.screen_x) {
        return a.groupId < b.groupId ? -1 : 1;
      } else {
        return a.screen_x - b.screen_x;
      }
    });

    // get intersections
    Bargraph._getDataIntersections(intersections, combinedData);

    // plot barchart
    for (i = 0; i < combinedData.length; i++) {
      group = framework.groups[combinedData[i].groupId];
      var minWidth = group.options.barChart.minWidth != undefined ? group.options.barChart.minWidth : 0.1 * group.options.barChart.width;

      key = combinedData[i].screen_x;
      var heightOffset = 0;
      if (intersections[key] === undefined) {
        if (i + 1 < combinedData.length) {
          coreDistance = Math.abs(combinedData[i + 1].screen_x - key);
        }
        drawData = Bargraph._getSafeDrawData(coreDistance, group, minWidth);
      } else {
        var nextKey = i + (intersections[key].amount - intersections[key].resolved);
        var prevKey = i - (intersections[key].resolved + 1);
        if (nextKey < combinedData.length) {
          coreDistance = Math.abs(combinedData[nextKey].screen_x - key);
        }
        drawData = Bargraph._getSafeDrawData(coreDistance, group, minWidth);
        intersections[key].resolved += 1;

        if (group.options.stack === true && group.options.excludeFromStacking !== true) {
          if (combinedData[i].screen_y < group.zeroPosition) {
            heightOffset = intersections[key].accumulatedNegative;
            intersections[key].accumulatedNegative += group.zeroPosition - combinedData[i].screen_y;
          } else {
            heightOffset = intersections[key].accumulatedPositive;
            intersections[key].accumulatedPositive += group.zeroPosition - combinedData[i].screen_y;
          }
        } else if (group.options.barChart.sideBySide === true) {
          drawData.width = drawData.width / intersections[key].amount;
          drawData.offset += intersections[key].resolved * drawData.width - 0.5 * drawData.width * (intersections[key].amount + 1);
        }
      }
      DOMutil.drawBar(combinedData[i].screen_x + drawData.offset, combinedData[i].screen_y - heightOffset, drawData.width, group.zeroPosition - combinedData[i].screen_y, group.className + ' vis-bar', framework.svgElements, framework.svg, group.style);
      // draw points
      if (group.options.drawPoints.enabled === true) {
        var pointData = {
          screen_x: combinedData[i].screen_x,
          screen_y: combinedData[i].screen_y - heightOffset,
          x: combinedData[i].x,
          y: combinedData[i].y,
          groupId: combinedData[i].groupId,
          label: combinedData[i].label
        };
        Points.draw([pointData], group, framework, drawData.offset);
        //DOMutil.drawPoint(combinedData[i].x + drawData.offset, combinedData[i].y, group, framework.svgElements, framework.svg);
      }
    }
  };

  /**
   * Fill the intersections object with counters of how many datapoints share the same x coordinates
   * @param intersections
   * @param combinedData
   * @private
   */
  Bargraph._getDataIntersections = function (intersections, combinedData) {
    // get intersections
    var coreDistance;
    for (var i = 0; i < combinedData.length; i++) {
      if (i + 1 < combinedData.length) {
        coreDistance = Math.abs(combinedData[i + 1].screen_x - combinedData[i].screen_x);
      }
      if (i > 0) {
        coreDistance = Math.min(coreDistance, Math.abs(combinedData[i - 1].screen_x - combinedData[i].screen_x));
      }
      if (coreDistance === 0) {
        if (intersections[combinedData[i].screen_x] === undefined) {
          intersections[combinedData[i].screen_x] = {
            amount: 0,
            resolved: 0,
            accumulatedPositive: 0,
            accumulatedNegative: 0
          };
        }
        intersections[combinedData[i].screen_x].amount += 1;
      }
    }
  };

  /**
   * Get the width and offset for bargraphs based on the coredistance between datapoints
   *
   * @param coreDistance
   * @param group
   * @param minWidth
   * @returns {{width: Number, offset: Number}}
   * @private
   */
  Bargraph._getSafeDrawData = function (coreDistance, group, minWidth) {
    var width, offset;
    if (coreDistance < group.options.barChart.width && coreDistance > 0) {
      width = coreDistance < minWidth ? minWidth : coreDistance;

      offset = 0; // recalculate offset with the new width;
      if (group.options.barChart.align === 'left') {
        offset -= 0.5 * coreDistance;
      } else if (group.options.barChart.align === 'right') {
        offset += 0.5 * coreDistance;
      }
    } else {
      // default settings
      width = group.options.barChart.width;
      offset = 0;
      if (group.options.barChart.align === 'left') {
        offset -= 0.5 * group.options.barChart.width;
      } else if (group.options.barChart.align === 'right') {
        offset += 0.5 * group.options.barChart.width;
      }
    }

    return { width: width, offset: offset };
  };

  Bargraph.getStackedYRange = function (combinedData, groupRanges, groupIds, groupLabel, orientation) {
    if (combinedData.length > 0) {
      // sort by time and by group
      combinedData.sort(function (a, b) {
        if (a.screen_x === b.screen_x) {
          return a.groupId < b.groupId ? -1 : 1;
        } else {
          return a.screen_x - b.screen_x;
        }
      });
      var intersections = {};

      Bargraph._getDataIntersections(intersections, combinedData);
      groupRanges[groupLabel] = Bargraph._getStackedYRange(intersections, combinedData);
      groupRanges[groupLabel].yAxisOrientation = orientation;
      groupIds.push(groupLabel);
    }
  };

  Bargraph._getStackedYRange = function (intersections, combinedData) {
    var key;
    var yMin = combinedData[0].screen_y;
    var yMax = combinedData[0].screen_y;
    for (var i = 0; i < combinedData.length; i++) {
      key = combinedData[i].screen_x;
      if (intersections[key] === undefined) {
        yMin = yMin > combinedData[i].screen_y ? combinedData[i].screen_y : yMin;
        yMax = yMax < combinedData[i].screen_y ? combinedData[i].screen_y : yMax;
      } else {
        if (combinedData[i].screen_y < 0) {
          intersections[key].accumulatedNegative += combinedData[i].screen_y;
        } else {
          intersections[key].accumulatedPositive += combinedData[i].screen_y;
        }
      }
    }
    for (var xpos in intersections) {
      if (intersections.hasOwnProperty(xpos)) {
        yMin = yMin > intersections[xpos].accumulatedNegative ? intersections[xpos].accumulatedNegative : yMin;
        yMin = yMin > intersections[xpos].accumulatedPositive ? intersections[xpos].accumulatedPositive : yMin;
        yMax = yMax < intersections[xpos].accumulatedNegative ? intersections[xpos].accumulatedNegative : yMax;
        yMax = yMax < intersections[xpos].accumulatedPositive ? intersections[xpos].accumulatedPositive : yMax;
      }
    }

    return { min: yMin, max: yMax };
  };

  module.exports = Bargraph;

/***/ },
/* 54 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var DOMutil = __webpack_require__(7);

  function Points(groupId, options) {}

  /**
   * draw the data points
   *
   * @param {Array} dataset
   * @param {Object} JSONcontainer
   * @param {Object} svg            | SVG DOM element
   * @param {GraphGroup} group
   * @param {Number} [offset]
   */
  Points.draw = function (dataset, group, framework, offset) {
    offset = offset || 0;
    var callback = getCallback(framework, group);

    for (var i = 0; i < dataset.length; i++) {
      if (!callback) {
        // draw the point the simple way.
        DOMutil.drawPoint(dataset[i].screen_x + offset, dataset[i].screen_y, getGroupTemplate(group), framework.svgElements, framework.svg, dataset[i].label);
      } else {
        var callbackResult = callback(dataset[i], group); // result might be true, false or an object
        if (callbackResult === true || typeof callbackResult === 'object') {
          DOMutil.drawPoint(dataset[i].screen_x + offset, dataset[i].screen_y, getGroupTemplate(group, callbackResult), framework.svgElements, framework.svg, dataset[i].label);
        }
      }
    }
  };

  Points.drawIcon = function (group, x, y, iconWidth, iconHeight, framework) {
    var fillHeight = iconHeight * 0.5;
    var path, fillPath;

    var outline = DOMutil.getSVGElement("rect", framework.svgElements, framework.svg);
    outline.setAttributeNS(null, "x", x);
    outline.setAttributeNS(null, "y", y - fillHeight);
    outline.setAttributeNS(null, "width", iconWidth);
    outline.setAttributeNS(null, "height", 2 * fillHeight);
    outline.setAttributeNS(null, "class", "vis-outline");

    //Don't call callback on icon
    DOMutil.drawPoint(x + 0.5 * iconWidth, y, getGroupTemplate(group), framework.svgElements, framework.svg);
  };

  function getGroupTemplate(group, callbackResult) {
    callbackResult = typeof callbackResult === 'undefined' ? {} : callbackResult;
    return {
      style: callbackResult.style || group.options.drawPoints.style,
      styles: callbackResult.styles || group.options.drawPoints.styles,
      size: callbackResult.size || group.options.drawPoints.size,
      className: callbackResult.className || group.className
    };
  }

  function getCallback(framework, group) {
    var callback = undefined;
    // check for the graph2d onRender
    if (framework.options && framework.options.drawPoints && framework.options.drawPoints.onRender && typeof framework.options.drawPoints.onRender == 'function') {
      callback = framework.options.drawPoints.onRender;
    }

    // override it with the group onRender if defined
    if (group.group.options && group.group.options.drawPoints && group.group.options.drawPoints.onRender && typeof group.group.options.drawPoints.onRender == 'function') {
      callback = group.group.options.drawPoints.onRender;
    }
    return callback;
  }

  module.exports = Points;

/***/ },
/* 55 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  var DOMutil = __webpack_require__(7);

  function Line(groupId, options) {}

  Line.calcPath = function (dataset, group) {
      if (dataset != null) {
          if (dataset.length > 0) {
              var d = [];

              // construct path from dataset
              if (group.options.interpolation.enabled == true) {
                  d = Line._catmullRom(dataset, group);
              } else {
                  d = Line._linear(dataset);
              }
              return d;
          }
      }
  };

  Line.drawIcon = function (group, x, y, iconWidth, iconHeight, framework) {
      var fillHeight = iconHeight * 0.5;
      var path, fillPath;

      var outline = DOMutil.getSVGElement("rect", framework.svgElements, framework.svg);
      outline.setAttributeNS(null, "x", x);
      outline.setAttributeNS(null, "y", y - fillHeight);
      outline.setAttributeNS(null, "width", iconWidth);
      outline.setAttributeNS(null, "height", 2 * fillHeight);
      outline.setAttributeNS(null, "class", "vis-outline");

      path = DOMutil.getSVGElement("path", framework.svgElements, framework.svg);
      path.setAttributeNS(null, "class", group.className);
      if (group.style !== undefined) {
          path.setAttributeNS(null, "style", group.style);
      }

      path.setAttributeNS(null, "d", "M" + x + "," + y + " L" + (x + iconWidth) + "," + y + "");
      if (group.options.shaded.enabled == true) {
          fillPath = DOMutil.getSVGElement("path", framework.svgElements, framework.svg);
          if (group.options.shaded.orientation == 'top') {
              fillPath.setAttributeNS(null, "d", "M" + x + ", " + (y - fillHeight) + "L" + x + "," + y + " L" + (x + iconWidth) + "," + y + " L" + (x + iconWidth) + "," + (y - fillHeight));
          } else {
              fillPath.setAttributeNS(null, "d", "M" + x + "," + y + " " + "L" + x + "," + (y + fillHeight) + " " + "L" + (x + iconWidth) + "," + (y + fillHeight) + "L" + (x + iconWidth) + "," + y);
          }
          fillPath.setAttributeNS(null, "class", group.className + " vis-icon-fill");
          if (group.options.shaded.style !== undefined && group.options.shaded.style !== "") {
              fillPath.setAttributeNS(null, "style", group.options.shaded.style);
          }
      }

      if (group.options.drawPoints.enabled == true) {
          var groupTemplate = {
              style: group.options.drawPoints.style,
              styles: group.options.drawPoints.styles,
              size: group.options.drawPoints.size,
              className: group.className
          };
          DOMutil.drawPoint(x + 0.5 * iconWidth, y, groupTemplate, framework.svgElements, framework.svg);
      }
  };

  Line.drawShading = function (pathArray, group, subPathArray, framework) {
      // append shading to the path
      if (group.options.shaded.enabled == true) {
          var svgHeight = Number(framework.svg.style.height.replace('px', ''));
          var fillPath = DOMutil.getSVGElement('path', framework.svgElements, framework.svg);
          var type = "L";
          if (group.options.interpolation.enabled == true) {
              type = "C";
          }
          var dFill;
          var zero = 0;
          if (group.options.shaded.orientation == 'top') {
              zero = 0;
          } else if (group.options.shaded.orientation == 'bottom') {
              zero = svgHeight;
          } else {
              zero = Math.min(Math.max(0, group.zeroPosition), svgHeight);
          }
          if (group.options.shaded.orientation == 'group' && subPathArray != null && subPathArray != undefined) {
              dFill = 'M' + pathArray[0][0] + "," + pathArray[0][1] + " " + this.serializePath(pathArray, type, false) + ' L' + subPathArray[subPathArray.length - 1][0] + "," + subPathArray[subPathArray.length - 1][1] + " " + this.serializePath(subPathArray, type, true) + subPathArray[0][0] + "," + subPathArray[0][1] + " Z";
          } else {
              dFill = 'M' + pathArray[0][0] + "," + pathArray[0][1] + " " + this.serializePath(pathArray, type, false) + ' V' + zero + ' H' + pathArray[0][0] + " Z";
          }

          fillPath.setAttributeNS(null, 'class', group.className + ' vis-fill');
          if (group.options.shaded.style !== undefined) {
              fillPath.setAttributeNS(null, 'style', group.options.shaded.style);
          }
          fillPath.setAttributeNS(null, 'd', dFill);
      }
  };

  /**
   * draw a line graph
   *
   * @param dataset
   * @param group
   */
  Line.draw = function (pathArray, group, framework) {
      if (pathArray != null && pathArray != undefined) {
          var path = DOMutil.getSVGElement('path', framework.svgElements, framework.svg);
          path.setAttributeNS(null, "class", group.className);
          if (group.style !== undefined) {
              path.setAttributeNS(null, "style", group.style);
          }

          var type = "L";
          if (group.options.interpolation.enabled == true) {
              type = "C";
          }
          // copy properties to path for drawing.
          path.setAttributeNS(null, 'd', 'M' + pathArray[0][0] + "," + pathArray[0][1] + " " + this.serializePath(pathArray, type, false));
      }
  };

  Line.serializePath = function (pathArray, type, inverse) {
      if (pathArray.length < 2) {
          //Too little data to create a path.
          return "";
      }
      var d = type;
      if (inverse) {
          for (var i = pathArray.length - 2; i > 0; i--) {
              d += pathArray[i][0] + "," + pathArray[i][1] + " ";
          }
      } else {
          for (var i = 1; i < pathArray.length; i++) {
              d += pathArray[i][0] + "," + pathArray[i][1] + " ";
          }
      }
      return d;
  };

  /**
   * This uses an uniform parametrization of the interpolation algorithm:
   * 'On the Parameterization of Catmull-Rom Curves' by Cem Yuksel et al.
   * @param data
   * @returns {string}
   * @private
   */
  Line._catmullRomUniform = function (data) {
      // catmull rom
      var p0, p1, p2, p3, bp1, bp2;
      var d = [];
      d.push([Math.round(data[0].screen_x), Math.round(data[0].screen_y)]);
      var normalization = 1 / 6;
      var length = data.length;
      for (var i = 0; i < length - 1; i++) {

          p0 = i == 0 ? data[0] : data[i - 1];
          p1 = data[i];
          p2 = data[i + 1];
          p3 = i + 2 < length ? data[i + 2] : p2;

          // Catmull-Rom to Cubic Bezier conversion matrix
          //    0       1       0       0
          //  -1/6      1      1/6      0
          //    0      1/6      1     -1/6
          //    0       0       1       0

          //    bp0 = { x: p1.x,                               y: p1.y };
          bp1 = {
              screen_x: (-p0.screen_x + 6 * p1.screen_x + p2.screen_x) * normalization,
              screen_y: (-p0.screen_y + 6 * p1.screen_y + p2.screen_y) * normalization
          };
          bp2 = {
              screen_x: (p1.screen_x + 6 * p2.screen_x - p3.screen_x) * normalization,
              screen_y: (p1.screen_y + 6 * p2.screen_y - p3.screen_y) * normalization
          };
          //    bp0 = { x: p2.x,                               y: p2.y };

          d.push([bp1.screen_x, bp1.screen_y]);
          d.push([bp2.screen_x, bp2.screen_y]);
          d.push([p2.screen_x, p2.screen_y]);
      }

      return d;
  };

  /**
   * This uses either the chordal or centripetal parameterization of the catmull-rom algorithm.
   * By default, the centripetal parameterization is used because this gives the nicest results.
   * These parameterizations are relatively heavy because the distance between 4 points have to be calculated.
   *
   * One optimization can be used to reuse distances since this is a sliding window approach.
   * @param data
   * @param group
   * @returns {string}
   * @private
   */
  Line._catmullRom = function (data, group) {
      var alpha = group.options.interpolation.alpha;
      if (alpha == 0 || alpha === undefined) {
          return this._catmullRomUniform(data);
      } else {
          var p0, p1, p2, p3, bp1, bp2, d1, d2, d3, A, B, N, M;
          var d3powA, d2powA, d3pow2A, d2pow2A, d1pow2A, d1powA;
          var d = [];
          d.push([Math.round(data[0].screen_x), Math.round(data[0].screen_y)]);
          var length = data.length;
          for (var i = 0; i < length - 1; i++) {

              p0 = i == 0 ? data[0] : data[i - 1];
              p1 = data[i];
              p2 = data[i + 1];
              p3 = i + 2 < length ? data[i + 2] : p2;

              d1 = Math.sqrt(Math.pow(p0.screen_x - p1.screen_x, 2) + Math.pow(p0.screen_y - p1.screen_y, 2));
              d2 = Math.sqrt(Math.pow(p1.screen_x - p2.screen_x, 2) + Math.pow(p1.screen_y - p2.screen_y, 2));
              d3 = Math.sqrt(Math.pow(p2.screen_x - p3.screen_x, 2) + Math.pow(p2.screen_y - p3.screen_y, 2));

              // Catmull-Rom to Cubic Bezier conversion matrix

              // A = 2d1^2a + 3d1^a * d2^a + d3^2a
              // B = 2d3^2a + 3d3^a * d2^a + d2^2a

              // [   0             1            0          0          ]
              // [   -d2^2a /N     A/N          d1^2a /N   0          ]
              // [   0             d3^2a /M     B/M        -d2^2a /M  ]
              // [   0             0            1          0          ]

              d3powA = Math.pow(d3, alpha);
              d3pow2A = Math.pow(d3, 2 * alpha);
              d2powA = Math.pow(d2, alpha);
              d2pow2A = Math.pow(d2, 2 * alpha);
              d1powA = Math.pow(d1, alpha);
              d1pow2A = Math.pow(d1, 2 * alpha);

              A = 2 * d1pow2A + 3 * d1powA * d2powA + d2pow2A;
              B = 2 * d3pow2A + 3 * d3powA * d2powA + d2pow2A;
              N = 3 * d1powA * (d1powA + d2powA);
              if (N > 0) {
                  N = 1 / N;
              }
              M = 3 * d3powA * (d3powA + d2powA);
              if (M > 0) {
                  M = 1 / M;
              }

              bp1 = {
                  screen_x: (-d2pow2A * p0.screen_x + A * p1.screen_x + d1pow2A * p2.screen_x) * N,
                  screen_y: (-d2pow2A * p0.screen_y + A * p1.screen_y + d1pow2A * p2.screen_y) * N
              };

              bp2 = {
                  screen_x: (d3pow2A * p1.screen_x + B * p2.screen_x - d2pow2A * p3.screen_x) * M,
                  screen_y: (d3pow2A * p1.screen_y + B * p2.screen_y - d2pow2A * p3.screen_y) * M
              };

              if (bp1.screen_x == 0 && bp1.screen_y == 0) {
                  bp1 = p1;
              }
              if (bp2.screen_x == 0 && bp2.screen_y == 0) {
                  bp2 = p2;
              }
              d.push([bp1.screen_x, bp1.screen_y]);
              d.push([bp2.screen_x, bp2.screen_y]);
              d.push([p2.screen_x, p2.screen_y]);
          }

          return d;
      }
  };

  /**
   * this generates the SVG path for a linear drawing between datapoints.
   * @param data
   * @returns {string}
   * @private
   */
  Line._linear = function (data) {
      // linear
      var d = [];
      for (var i = 0; i < data.length; i++) {
          d.push([data[i].screen_x, data[i].screen_y]);
      }
      return d;
  };

  module.exports = Line;

/***/ },
/* 56 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  var util = __webpack_require__(1);
  var DOMutil = __webpack_require__(7);
  var Component = __webpack_require__(25);

  /**
   * Legend for Graph2d
   */
  function Legend(body, options, side, linegraphOptions) {
    this.body = body;
    this.defaultOptions = {
      enabled: false,
      icons: true,
      iconSize: 20,
      iconSpacing: 6,
      left: {
        visible: true,
        position: 'top-left' // top/bottom - left,center,right
      },
      right: {
        visible: true,
        position: 'top-right' // top/bottom - left,center,right
      }
    };

    this.side = side;
    this.options = util.extend({}, this.defaultOptions);
    this.linegraphOptions = linegraphOptions;

    this.svgElements = {};
    this.dom = {};
    this.groups = {};
    this.amountOfGroups = 0;
    this._create();
    this.framework = { svg: this.svg, svgElements: this.svgElements, options: this.options, groups: this.groups };

    this.setOptions(options);
  }

  Legend.prototype = new Component();

  Legend.prototype.clear = function () {
    this.groups = {};
    this.amountOfGroups = 0;
  };

  Legend.prototype.addGroup = function (label, graphOptions) {

    // Include a group only if the group option 'excludeFromLegend: false' is not set.
    if (graphOptions.options.excludeFromLegend != true) {
      if (!this.groups.hasOwnProperty(label)) {
        this.groups[label] = graphOptions;
      }
      this.amountOfGroups += 1;
    }
  };

  Legend.prototype.updateGroup = function (label, graphOptions) {
    this.groups[label] = graphOptions;
  };

  Legend.prototype.removeGroup = function (label) {
    if (this.groups.hasOwnProperty(label)) {
      delete this.groups[label];
      this.amountOfGroups -= 1;
    }
  };

  Legend.prototype._create = function () {
    this.dom.frame = document.createElement('div');
    this.dom.frame.className = 'vis-legend';
    this.dom.frame.style.position = "absolute";
    this.dom.frame.style.top = "10px";
    this.dom.frame.style.display = "block";

    this.dom.textArea = document.createElement('div');
    this.dom.textArea.className = 'vis-legend-text';
    this.dom.textArea.style.position = "relative";
    this.dom.textArea.style.top = "0px";

    this.svg = document.createElementNS('http://www.w3.org/2000/svg', "svg");
    this.svg.style.position = 'absolute';
    this.svg.style.top = 0 + 'px';
    this.svg.style.width = this.options.iconSize + 5 + 'px';
    this.svg.style.height = '100%';

    this.dom.frame.appendChild(this.svg);
    this.dom.frame.appendChild(this.dom.textArea);
  };

  /**
   * Hide the component from the DOM
   */
  Legend.prototype.hide = function () {
    // remove the frame containing the items
    if (this.dom.frame.parentNode) {
      this.dom.frame.parentNode.removeChild(this.dom.frame);
    }
  };

  /**
   * Show the component in the DOM (when not already visible).
   * @return {Boolean} changed
   */
  Legend.prototype.show = function () {
    // show frame containing the items
    if (!this.dom.frame.parentNode) {
      this.body.dom.center.appendChild(this.dom.frame);
    }
  };

  Legend.prototype.setOptions = function (options) {
    var fields = ['enabled', 'orientation', 'icons', 'left', 'right'];
    util.selectiveDeepExtend(fields, this.options, options);
  };

  Legend.prototype.redraw = function () {
    var activeGroups = 0;
    var groupArray = Object.keys(this.groups);
    groupArray.sort(function (a, b) {
      return a < b ? -1 : 1;
    });

    for (var i = 0; i < groupArray.length; i++) {
      var groupId = groupArray[i];
      if (this.groups[groupId].visible == true && (this.linegraphOptions.visibility[groupId] === undefined || this.linegraphOptions.visibility[groupId] == true)) {
        activeGroups++;
      }
    }

    if (this.options[this.side].visible == false || this.amountOfGroups == 0 || this.options.enabled == false || activeGroups == 0) {
      this.hide();
    } else {
      this.show();
      if (this.options[this.side].position == 'top-left' || this.options[this.side].position == 'bottom-left') {
        this.dom.frame.style.left = '4px';
        this.dom.frame.style.textAlign = "left";
        this.dom.textArea.style.textAlign = "left";
        this.dom.textArea.style.left = this.options.iconSize + 15 + 'px';
        this.dom.textArea.style.right = '';
        this.svg.style.left = 0 + 'px';
        this.svg.style.right = '';
      } else {
        this.dom.frame.style.right = '4px';
        this.dom.frame.style.textAlign = "right";
        this.dom.textArea.style.textAlign = "right";
        this.dom.textArea.style.right = this.options.iconSize + 15 + 'px';
        this.dom.textArea.style.left = '';
        this.svg.style.right = 0 + 'px';
        this.svg.style.left = '';
      }

      if (this.options[this.side].position == 'top-left' || this.options[this.side].position == 'top-right') {
        this.dom.frame.style.top = 4 - Number(this.body.dom.center.style.top.replace("px", "")) + 'px';
        this.dom.frame.style.bottom = '';
      } else {
        var scrollableHeight = this.body.domProps.center.height - this.body.domProps.centerContainer.height;
        this.dom.frame.style.bottom = 4 + scrollableHeight + Number(this.body.dom.center.style.top.replace("px", "")) + 'px';
        this.dom.frame.style.top = '';
      }

      if (this.options.icons == false) {
        this.dom.frame.style.width = this.dom.textArea.offsetWidth + 10 + 'px';
        this.dom.textArea.style.right = '';
        this.dom.textArea.style.left = '';
        this.svg.style.width = '0px';
      } else {
        this.dom.frame.style.width = this.options.iconSize + 15 + this.dom.textArea.offsetWidth + 10 + 'px';
        this.drawLegendIcons();
      }

      var content = '';
      for (var i = 0; i < groupArray.length; i++) {
        var groupId = groupArray[i];
        if (this.groups[groupId].visible == true && (this.linegraphOptions.visibility[groupId] === undefined || this.linegraphOptions.visibility[groupId] == true)) {
          content += this.groups[groupId].content + '<br />';
        }
      }
      this.dom.textArea.innerHTML = content;
      this.dom.textArea.style.lineHeight = 0.75 * this.options.iconSize + this.options.iconSpacing + 'px';
    }
  };

  Legend.prototype.drawLegendIcons = function () {
    if (this.dom.frame.parentNode) {
      var groupArray = Object.keys(this.groups);
      groupArray.sort(function (a, b) {
        return a < b ? -1 : 1;
      });

      // this resets the elements so the order is maintained
      DOMutil.resetElements(this.svgElements);

      var padding = window.getComputedStyle(this.dom.frame).paddingTop;
      var iconOffset = Number(padding.replace('px', ''));
      var x = iconOffset;
      var iconWidth = this.options.iconSize;
      var iconHeight = 0.75 * this.options.iconSize;
      var y = iconOffset + 0.5 * iconHeight + 3;

      this.svg.style.width = iconWidth + 5 + iconOffset + 'px';

      for (var i = 0; i < groupArray.length; i++) {
        var groupId = groupArray[i];
        if (this.groups[groupId].visible == true && (this.linegraphOptions.visibility[groupId] === undefined || this.linegraphOptions.visibility[groupId] == true)) {
          this.groups[groupId].getLegend(iconWidth, iconHeight, this.framework, x, y);
          y += iconHeight + this.options.iconSpacing;
        }
      }
    }
  };

  module.exports = Legend;

/***/ },
/* 57 */
/***/ function(module, exports) {

  /**
   * This object contains all possible options. It will check if the types are correct, if required if the option is one
   * of the allowed values.
   *
   * __any__ means that the name of the property does not matter.
   * __type__ is a required field for all objects and contains the allowed types of all objects
   */
  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });
  var string = 'string';
  var boolean = 'boolean';
  var number = 'number';
  var array = 'array';
  var date = 'date';
  var object = 'object'; // should only be in a __type__ property
  var dom = 'dom';
  var moment = 'moment';
  var any = 'any';

  var allOptions = {
    configure: {
      enabled: { boolean: boolean },
      filter: { boolean: boolean, 'function': 'function' },
      container: { dom: dom },
      __type__: { object: object, boolean: boolean, 'function': 'function' }
    },

    //globals :
    yAxisOrientation: { string: ['left', 'right'] },
    defaultGroup: { string: string },
    sort: { boolean: boolean },
    sampling: { boolean: boolean },
    stack: { boolean: boolean },
    graphHeight: { string: string, number: number },
    shaded: {
      enabled: { boolean: boolean },
      orientation: { string: ['bottom', 'top', 'zero', 'group'] }, // top, bottom, zero, group
      groupId: { object: object },
      __type__: { boolean: boolean, object: object }
    },
    style: { string: ['line', 'bar', 'points'] }, // line, bar
    barChart: {
      width: { number: number },
      minWidth: { number: number },
      sideBySide: { boolean: boolean },
      align: { string: ['left', 'center', 'right'] },
      __type__: { object: object }
    },
    interpolation: {
      enabled: { boolean: boolean },
      parametrization: { string: ['centripetal', 'chordal', 'uniform'] }, // uniform (alpha = 0.0), chordal (alpha = 1.0), centripetal (alpha = 0.5)
      alpha: { number: number },
      __type__: { object: object, boolean: boolean }
    },
    drawPoints: {
      enabled: { boolean: boolean },
      onRender: { 'function': 'function' },
      size: { number: number },
      style: { string: ['square', 'circle'] }, // square, circle
      __type__: { object: object, boolean: boolean, 'function': 'function' }
    },
    dataAxis: {
      showMinorLabels: { boolean: boolean },
      showMajorLabels: { boolean: boolean },
      icons: { boolean: boolean },
      width: { string: string, number: number },
      visible: { boolean: boolean },
      alignZeros: { boolean: boolean },
      left: {
        range: { min: { number: number }, max: { number: number }, __type__: { object: object } },
        format: { 'function': 'function' },
        title: { text: { string: string, number: number }, style: { string: string }, __type__: { object: object } },
        __type__: { object: object }
      },
      right: {
        range: { min: { number: number }, max: { number: number }, __type__: { object: object } },
        format: { 'function': 'function' },
        title: { text: { string: string, number: number }, style: { string: string }, __type__: { object: object } },
        __type__: { object: object }
      },
      __type__: { object: object }
    },
    legend: {
      enabled: { boolean: boolean },
      icons: { boolean: boolean },
      left: {
        visible: { boolean: boolean },
        position: { string: ['top-right', 'bottom-right', 'top-left', 'bottom-left'] },
        __type__: { object: object }
      },
      right: {
        visible: { boolean: boolean },
        position: { string: ['top-right', 'bottom-right', 'top-left', 'bottom-left'] },
        __type__: { object: object }
      },
      __type__: { object: object, boolean: boolean }
    },
    groups: {
      visibility: { any: any },
      __type__: { object: object }
    },

    autoResize: { boolean: boolean },
    throttleRedraw: { number: number },
    clickToUse: { boolean: boolean },
    end: { number: number, date: date, string: string, moment: moment },
    format: {
      minorLabels: {
        millisecond: { string: string, 'undefined': 'undefined' },
        second: { string: string, 'undefined': 'undefined' },
        minute: { string: string, 'undefined': 'undefined' },
        hour: { string: string, 'undefined': 'undefined' },
        weekday: { string: string, 'undefined': 'undefined' },
        day: { string: string, 'undefined': 'undefined' },
        month: { string: string, 'undefined': 'undefined' },
        year: { string: string, 'undefined': 'undefined' },
        __type__: { object: object }
      },
      majorLabels: {
        millisecond: { string: string, 'undefined': 'undefined' },
        second: { string: string, 'undefined': 'undefined' },
        minute: { string: string, 'undefined': 'undefined' },
        hour: { string: string, 'undefined': 'undefined' },
        weekday: { string: string, 'undefined': 'undefined' },
        day: { string: string, 'undefined': 'undefined' },
        month: { string: string, 'undefined': 'undefined' },
        year: { string: string, 'undefined': 'undefined' },
        __type__: { object: object }
      },
      __type__: { object: object }
    },
    moment: { 'function': 'function' },
    height: { string: string, number: number },
    hiddenDates: {
      start: { date: date, number: number, string: string, moment: moment },
      end: { date: date, number: number, string: string, moment: moment },
      repeat: { string: string },
      __type__: { object: object, array: array }
    },
    locale: { string: string },
    locales: {
      __any__: { any: any },
      __type__: { object: object }
    },
    max: { date: date, number: number, string: string, moment: moment },
    maxHeight: { number: number, string: string },
    maxMinorChars: { number: number },
    min: { date: date, number: number, string: string, moment: moment },
    minHeight: { number: number, string: string },
    moveable: { boolean: boolean },
    multiselect: { boolean: boolean },
    orientation: { string: string },
    showCurrentTime: { boolean: boolean },
    showMajorLabels: { boolean: boolean },
    showMinorLabels: { boolean: boolean },
    start: { date: date, number: number, string: string, moment: moment },
    timeAxis: {
      scale: { string: string, 'undefined': 'undefined' },
      step: { number: number, 'undefined': 'undefined' },
      __type__: { object: object }
    },
    width: { string: string, number: number },
    zoomable: { boolean: boolean },
    zoomKey: { string: ['ctrlKey', 'altKey', 'metaKey', ''] },
    zoomMax: { number: number },
    zoomMin: { number: number },
    zIndex: { number: number },
    __type__: { object: object }
  };

  var configureOptions = {
    global: {
      //yAxisOrientation: ['left','right'], // TDOO: enable as soon as Grahp2d doesn't crash when changing this on the fly
      sort: true,
      sampling: true,
      stack: false,
      shaded: {
        enabled: false,
        orientation: ['zero', 'top', 'bottom', 'group'] // zero, top, bottom
      },
      style: ['line', 'bar', 'points'], // line, bar
      barChart: {
        width: [50, 5, 100, 5],
        minWidth: [50, 5, 100, 5],
        sideBySide: false,
        align: ['left', 'center', 'right'] // left, center, right
      },
      interpolation: {
        enabled: true,
        parametrization: ['centripetal', 'chordal', 'uniform'] // uniform (alpha = 0.0), chordal (alpha = 1.0), centripetal (alpha = 0.5)
      },
      drawPoints: {
        enabled: true,
        size: [6, 2, 30, 1],
        style: ['square', 'circle'] // square, circle
      },
      dataAxis: {
        showMinorLabels: true,
        showMajorLabels: true,
        icons: false,
        width: [40, 0, 200, 1],
        visible: true,
        alignZeros: true,
        left: {
          //range: {min:'undefined': 'undefined'ined,max:'undefined': 'undefined'ined},
          //format: function (value) {return value;},
          title: { text: '', style: '' }
        },
        right: {
          //range: {min:'undefined': 'undefined'ined,max:'undefined': 'undefined'ined},
          //format: function (value) {return value;},
          title: { text: '', style: '' }
        }
      },
      legend: {
        enabled: false,
        icons: true,
        left: {
          visible: true,
          position: ['top-right', 'bottom-right', 'top-left', 'bottom-left'] // top/bottom - left,right
        },
        right: {
          visible: true,
          position: ['top-right', 'bottom-right', 'top-left', 'bottom-left'] // top/bottom - left,right
        }
      },

      autoResize: true,
      throttleRedraw: [10, 0, 1000, 10],
      clickToUse: false,
      end: '',
      format: {
        minorLabels: {
          millisecond: 'SSS',
          second: 's',
          minute: 'HH:mm',
          hour: 'HH:mm',
          weekday: 'ddd D',
          day: 'D',
          month: 'MMM',
          year: 'YYYY'
        },
        majorLabels: {
          millisecond: 'HH:mm:ss',
          second: 'D MMMM HH:mm',
          minute: 'ddd D MMMM',
          hour: 'ddd D MMMM',
          weekday: 'MMMM YYYY',
          day: 'MMMM YYYY',
          month: 'YYYY',
          year: ''
        }
      },

      height: '',
      locale: '',
      max: '',
      maxHeight: '',
      maxMinorChars: [7, 0, 20, 1],
      min: '',
      minHeight: '',
      moveable: true,
      orientation: ['both', 'bottom', 'top'],
      showCurrentTime: false,
      showMajorLabels: true,
      showMinorLabels: true,
      start: '',
      width: '100%',
      zoomable: true,
      zoomKey: ['ctrlKey', 'altKey', 'metaKey', ''],
      zoomMax: [315360000000000, 10, 315360000000000, 1],
      zoomMin: [10, 10, 315360000000000, 1],
      zIndex: 0
    }
  };

  exports.allOptions = allOptions;
  exports.configureOptions = configureOptions;

/***/ },
/* 58 */
/***/ function(module, exports, __webpack_require__) {

  // Load custom shapes into CanvasRenderingContext2D
  'use strict';

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  var _modulesGroups = __webpack_require__(59);

  var _modulesGroups2 = _interopRequireDefault(_modulesGroups);

  var _modulesNodesHandler = __webpack_require__(60);

  var _modulesNodesHandler2 = _interopRequireDefault(_modulesNodesHandler);

  var _modulesEdgesHandler = __webpack_require__(80);

  var _modulesEdgesHandler2 = _interopRequireDefault(_modulesEdgesHandler);

  var _modulesPhysicsEngine = __webpack_require__(89);

  var _modulesPhysicsEngine2 = _interopRequireDefault(_modulesPhysicsEngine);

  var _modulesClustering = __webpack_require__(98);

  var _modulesClustering2 = _interopRequireDefault(_modulesClustering);

  var _modulesCanvasRenderer = __webpack_require__(101);

  var _modulesCanvasRenderer2 = _interopRequireDefault(_modulesCanvasRenderer);

  var _modulesCanvas = __webpack_require__(102);

  var _modulesCanvas2 = _interopRequireDefault(_modulesCanvas);

  var _modulesView = __webpack_require__(103);

  var _modulesView2 = _interopRequireDefault(_modulesView);

  var _modulesInteractionHandler = __webpack_require__(104);

  var _modulesInteractionHandler2 = _interopRequireDefault(_modulesInteractionHandler);

  var _modulesSelectionHandler = __webpack_require__(107);

  var _modulesSelectionHandler2 = _interopRequireDefault(_modulesSelectionHandler);

  var _modulesLayoutEngine = __webpack_require__(108);

  var _modulesLayoutEngine2 = _interopRequireDefault(_modulesLayoutEngine);

  var _modulesManipulationSystem = __webpack_require__(109);

  var _modulesManipulationSystem2 = _interopRequireDefault(_modulesManipulationSystem);

  var _sharedConfigurator = __webpack_require__(44);

  var _sharedConfigurator2 = _interopRequireDefault(_sharedConfigurator);

  var _sharedValidator = __webpack_require__(46);

  var _sharedValidator2 = _interopRequireDefault(_sharedValidator);

  var _optionsJs = __webpack_require__(110);

  var _modulesKamadaKawaiJs = __webpack_require__(111);

  var _modulesKamadaKawaiJs2 = _interopRequireDefault(_modulesKamadaKawaiJs);

  /**
   * @constructor Network
   * Create a network visualization, displaying nodes and edges.
   *
   * @param {Element} container   The DOM element in which the Network will
   *                                  be created. Normally a div element.
   * @param {Object} data         An object containing parameters
   *                              {Array} nodes
   *                              {Array} edges
   * @param {Object} options      Options
   */
  __webpack_require__(113);

  var Emitter = __webpack_require__(12);
  var Hammer = __webpack_require__(20);
  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);
  var dotparser = __webpack_require__(114);
  var gephiParser = __webpack_require__(115);
  var Images = __webpack_require__(116);
  var Activator = __webpack_require__(39);
  var locales = __webpack_require__(117);

  function Network(container, data, options) {
    var _this = this;

    if (!(this instanceof Network)) {
      throw new SyntaxError('Constructor must be called with the new operator');
    }

    // set constant values
    this.options = {};
    this.defaultOptions = {
      locale: 'en',
      locales: locales,
      clickToUse: false
    };
    util.extend(this.options, this.defaultOptions);

    // containers for nodes and edges
    this.body = {
      container: container,
      nodes: {},
      nodeIndices: [],
      edges: {},
      edgeIndices: [],
      emitter: {
        on: this.on.bind(this),
        off: this.off.bind(this),
        emit: this.emit.bind(this),
        once: this.once.bind(this)
      },
      eventListeners: {
        onTap: function onTap() {},
        onTouch: function onTouch() {},
        onDoubleTap: function onDoubleTap() {},
        onHold: function onHold() {},
        onDragStart: function onDragStart() {},
        onDrag: function onDrag() {},
        onDragEnd: function onDragEnd() {},
        onMouseWheel: function onMouseWheel() {},
        onPinch: function onPinch() {},
        onMouseMove: function onMouseMove() {},
        onRelease: function onRelease() {},
        onContext: function onContext() {}
      },
      data: {
        nodes: null, // A DataSet or DataView
        edges: null // A DataSet or DataView
      },
      functions: {
        createNode: function createNode() {},
        createEdge: function createEdge() {},
        getPointer: function getPointer() {}
      },
      modules: {},
      view: {
        scale: 1,
        translation: { x: 0, y: 0 }
      }
    };

    // bind the event listeners
    this.bindEventListeners();

    // setting up all modules
    this.images = new Images(function () {
      return _this.body.emitter.emit("_requestRedraw");
    }); // object with images
    this.groups = new _modulesGroups2['default'](); // object with groups
    this.canvas = new _modulesCanvas2['default'](this.body); // DOM handler
    this.selectionHandler = new _modulesSelectionHandler2['default'](this.body, this.canvas); // Selection handler
    this.interactionHandler = new _modulesInteractionHandler2['default'](this.body, this.canvas, this.selectionHandler); // Interaction handler handles all the hammer bindings (that are bound by canvas), key
    this.view = new _modulesView2['default'](this.body, this.canvas); // camera handler, does animations and zooms
    this.renderer = new _modulesCanvasRenderer2['default'](this.body, this.canvas); // renderer, starts renderloop, has events that modules can hook into
    this.physics = new _modulesPhysicsEngine2['default'](this.body); // physics engine, does all the simulations
    this.layoutEngine = new _modulesLayoutEngine2['default'](this.body); // layout engine for inital layout and hierarchical layout
    this.clustering = new _modulesClustering2['default'](this.body); // clustering api
    this.manipulation = new _modulesManipulationSystem2['default'](this.body, this.canvas, this.selectionHandler); // data manipulation system

    this.nodesHandler = new _modulesNodesHandler2['default'](this.body, this.images, this.groups, this.layoutEngine); // Handle adding, deleting and updating of nodes as well as global options
    this.edgesHandler = new _modulesEdgesHandler2['default'](this.body, this.images, this.groups); // Handle adding, deleting and updating of edges as well as global options

    this.body.modules["kamadaKawai"] = new _modulesKamadaKawaiJs2['default'](this.body, 150, 0.05); // Layouting algorithm.
    this.body.modules["clustering"] = this.clustering;

    // create the DOM elements
    this.canvas._create();

    // apply options
    this.setOptions(options);

    // load data (the disable start variable will be the same as the enabled clustering)
    this.setData(data);
  }

  // Extend Network with an Emitter mixin
  Emitter(Network.prototype);

  /**
   * Set options
   * @param {Object} options
   */
  Network.prototype.setOptions = function (options) {
    var _this2 = this;

    if (options !== undefined) {
      var errorFound = _sharedValidator2['default'].validate(options, _optionsJs.allOptions);
      if (errorFound === true) {
        console.log('%cErrors have been found in the supplied options object.', _sharedValidator.printStyle);
      }

      // copy the global fields over
      var fields = ['locale', 'locales', 'clickToUse'];
      util.selectiveDeepExtend(fields, this.options, options);

      // the hierarchical system can adapt the edges and the physics to it's own options because not all combinations work with the hierarichical system.
      options = this.layoutEngine.setOptions(options.layout, options);

      this.canvas.setOptions(options); // options for canvas are in globals

      // pass the options to the modules
      this.groups.setOptions(options.groups);
      this.nodesHandler.setOptions(options.nodes);
      this.edgesHandler.setOptions(options.edges);
      this.physics.setOptions(options.physics);
      this.manipulation.setOptions(options.manipulation, options, this.options); // manipulation uses the locales in the globals

      this.interactionHandler.setOptions(options.interaction);
      this.renderer.setOptions(options.interaction); // options for rendering are in interaction
      this.selectionHandler.setOptions(options.interaction); // options for selection are in interaction

      // reload the settings of the nodes to apply changes in groups that are not referenced by pointer.
      if (options.groups !== undefined) {
        this.body.emitter.emit("refreshNodes");
      }
      // these two do not have options at the moment, here for completeness
      //this.view.setOptions(options.view);
      //this.clustering.setOptions(options.clustering);

      if ('configure' in options) {
        if (!this.configurator) {
          this.configurator = new _sharedConfigurator2['default'](this, this.body.container, _optionsJs.configureOptions, this.canvas.pixelRatio);
        }

        this.configurator.setOptions(options.configure);
      }

      // if the configuration system is enabled, copy all options and put them into the config system
      if (this.configurator && this.configurator.options.enabled === true) {
        var networkOptions = { nodes: {}, edges: {}, layout: {}, interaction: {}, manipulation: {}, physics: {}, global: {} };
        util.deepExtend(networkOptions.nodes, this.nodesHandler.options);
        util.deepExtend(networkOptions.edges, this.edgesHandler.options);
        util.deepExtend(networkOptions.layout, this.layoutEngine.options);
        // load the selectionHandler and render default options in to the interaction group
        util.deepExtend(networkOptions.interaction, this.selectionHandler.options);
        util.deepExtend(networkOptions.interaction, this.renderer.options);

        util.deepExtend(networkOptions.interaction, this.interactionHandler.options);
        util.deepExtend(networkOptions.manipulation, this.manipulation.options);
        util.deepExtend(networkOptions.physics, this.physics.options);

        // load globals into the global object
        util.deepExtend(networkOptions.global, this.canvas.options);
        util.deepExtend(networkOptions.global, this.options);

        this.configurator.setModuleOptions(networkOptions);
      }

      // handle network global options
      if (options.clickToUse !== undefined) {
        if (options.clickToUse === true) {
          if (this.activator === undefined) {
            this.activator = new Activator(this.canvas.frame);
            this.activator.on('change', function () {
              _this2.body.emitter.emit("activate");
            });
          }
        } else {
          if (this.activator !== undefined) {
            this.activator.destroy();
            delete this.activator;
          }
          this.body.emitter.emit("activate");
        }
      } else {
        this.body.emitter.emit("activate");
      }

      this.canvas.setSize();
      // start the physics simulation. Can be safely called multiple times.
      this.body.emitter.emit("startSimulation");
    }
  };

  /**
   * Update the this.body.nodeIndices with the most recent node index list
   * @private
   */
  Network.prototype._updateVisibleIndices = function () {
    var nodes = this.body.nodes;
    var edges = this.body.edges;
    this.body.nodeIndices = [];
    this.body.edgeIndices = [];

    for (var nodeId in nodes) {
      if (nodes.hasOwnProperty(nodeId)) {
        if (nodes[nodeId].options.hidden === false) {
          this.body.nodeIndices.push(nodes[nodeId].id);
        }
      }
    }

    for (var edgeId in edges) {
      if (edges.hasOwnProperty(edgeId)) {
        if (edges[edgeId].options.hidden === false) {
          this.body.edgeIndices.push(edges[edgeId].id);
        }
      }
    }
  };

  /**
   * Bind all events
   */
  Network.prototype.bindEventListeners = function () {
    var _this3 = this;

    // this event will trigger a rebuilding of the cache everything. Used when nodes or edges have been added or removed.
    this.body.emitter.on("_dataChanged", function () {
      // update shortcut lists
      _this3._updateVisibleIndices();
      _this3.body.emitter.emit("_requestRedraw");
      // call the dataUpdated event because the only difference between the two is the updating of the indices
      _this3.body.emitter.emit("_dataUpdated");
    });

    // this is called when options of EXISTING nodes or edges have changed.
    this.body.emitter.on("_dataUpdated", function () {
      // update values
      _this3._updateValueRange(_this3.body.nodes);
      _this3._updateValueRange(_this3.body.edges);
      // start simulation (can be called safely, even if already running)
      _this3.body.emitter.emit("startSimulation");
      _this3.body.emitter.emit("_requestRedraw");
    });
  };

  /**
   * Set nodes and edges, and optionally options as well.
   *
   * @param {Object} data              Object containing parameters:
   *                                   {Array | DataSet | DataView} [nodes] Array with nodes
   *                                   {Array | DataSet | DataView} [edges] Array with edges
   *                                   {String} [dot] String containing data in DOT format
   *                                   {String} [gephi] String containing data in gephi JSON format
   *                                   {Options} [options] Object with options
   */
  Network.prototype.setData = function (data) {
    // reset the physics engine.
    this.body.emitter.emit("resetPhysics");
    this.body.emitter.emit("_resetData");

    // unselect all to ensure no selections from old data are carried over.
    this.selectionHandler.unselectAll();

    if (data && data.dot && (data.nodes || data.edges)) {
      throw new SyntaxError('Data must contain either parameter "dot" or ' + ' parameter pair "nodes" and "edges", but not both.');
    }

    // set options
    this.setOptions(data && data.options);
    // set all data
    if (data && data.dot) {
      console.log('The dot property has been depricated. Please use the static convertDot method to convert DOT into vis.network format and use the normal data format with nodes and edges. This converter is used like this: var data = vis.network.convertDot(dotString);');
      // parse DOT file
      var dotData = dotparser.DOTToGraph(data.dot);
      this.setData(dotData);
      return;
    } else if (data && data.gephi) {
      // parse DOT file
      console.log('The gephi property has been depricated. Please use the static convertGephi method to convert gephi into vis.network format and use the normal data format with nodes and edges. This converter is used like this: var data = vis.network.convertGephi(gephiJson);');
      var gephiData = gephiParser.parseGephi(data.gephi);
      this.setData(gephiData);
      return;
    } else {
      this.nodesHandler.setData(data && data.nodes, true);
      this.edgesHandler.setData(data && data.edges, true);
    }

    // emit change in data
    this.body.emitter.emit("_dataChanged");

    // emit data loaded
    this.body.emitter.emit("_dataLoaded");

    // find a stable position or start animating to a stable position
    this.body.emitter.emit("initPhysics");
  };

  /**
   * Cleans up all bindings of the network, removing it fully from the memory IF the variable is set to null after calling this function.
   * var network = new vis.Network(..);
   * network.destroy();
   * network = null;
   */
  Network.prototype.destroy = function () {
    this.body.emitter.emit("destroy");
    // clear events
    this.body.emitter.off();
    this.off();

    // delete modules
    delete this.groups;
    delete this.canvas;
    delete this.selectionHandler;
    delete this.interactionHandler;
    delete this.view;
    delete this.renderer;
    delete this.physics;
    delete this.layoutEngine;
    delete this.clustering;
    delete this.manipulation;
    delete this.nodesHandler;
    delete this.edgesHandler;
    delete this.configurator;
    delete this.images;

    for (var nodeId in this.body.nodes) {
      delete this.body.nodes[nodeId];
    }
    for (var edgeId in this.body.edges) {
      delete this.body.edges[edgeId];
    }

    // remove the container and everything inside it recursively
    util.recursiveDOMDelete(this.body.container);
  };

  /**
   * Update the values of all object in the given array according to the current
   * value range of the objects in the array.
   * @param {Object} obj    An object containing a set of Edges or Nodes
   *                        The objects must have a method getValue() and
   *                        setValueRange(min, max).
   * @private
   */
  Network.prototype._updateValueRange = function (obj) {
    var id;

    // determine the range of the objects
    var valueMin = undefined;
    var valueMax = undefined;
    var valueTotal = 0;
    for (id in obj) {
      if (obj.hasOwnProperty(id)) {
        var value = obj[id].getValue();
        if (value !== undefined) {
          valueMin = valueMin === undefined ? value : Math.min(value, valueMin);
          valueMax = valueMax === undefined ? value : Math.max(value, valueMax);
          valueTotal += value;
        }
      }
    }

    // adjust the range of all objects
    if (valueMin !== undefined && valueMax !== undefined) {
      for (id in obj) {
        if (obj.hasOwnProperty(id)) {
          obj[id].setValueRange(valueMin, valueMax, valueTotal);
        }
      }
    }
  };

  /**
   * Returns true when the Network is active.
   * @returns {boolean}
   */
  Network.prototype.isActive = function () {
    return !this.activator || this.activator.active;
  };

  Network.prototype.setSize = function () {
    return this.canvas.setSize.apply(this.canvas, arguments);
  };
  Network.prototype.canvasToDOM = function () {
    return this.canvas.canvasToDOM.apply(this.canvas, arguments);
  };
  Network.prototype.DOMtoCanvas = function () {
    return this.canvas.DOMtoCanvas.apply(this.canvas, arguments);
  };
  Network.prototype.findNode = function () {
    return this.clustering.findNode.apply(this.clustering, arguments);
  };
  Network.prototype.isCluster = function () {
    return this.clustering.isCluster.apply(this.clustering, arguments);
  };
  Network.prototype.openCluster = function () {
    return this.clustering.openCluster.apply(this.clustering, arguments);
  };
  Network.prototype.cluster = function () {
    return this.clustering.cluster.apply(this.clustering, arguments);
  };
  Network.prototype.getNodesInCluster = function () {
    return this.clustering.getNodesInCluster.apply(this.clustering, arguments);
  };
  Network.prototype.clusterByConnection = function () {
    return this.clustering.clusterByConnection.apply(this.clustering, arguments);
  };
  Network.prototype.clusterByHubsize = function () {
    return this.clustering.clusterByHubsize.apply(this.clustering, arguments);
  };
  Network.prototype.clusterOutliers = function () {
    return this.clustering.clusterOutliers.apply(this.clustering, arguments);
  };
  Network.prototype.getSeed = function () {
    return this.layoutEngine.getSeed.apply(this.layoutEngine, arguments);
  };
  Network.prototype.enableEditMode = function () {
    return this.manipulation.enableEditMode.apply(this.manipulation, arguments);
  };
  Network.prototype.disableEditMode = function () {
    return this.manipulation.disableEditMode.apply(this.manipulation, arguments);
  };
  Network.prototype.addNodeMode = function () {
    return this.manipulation.addNodeMode.apply(this.manipulation, arguments);
  };
  Network.prototype.editNode = function () {
    return this.manipulation.editNode.apply(this.manipulation, arguments);
  };
  Network.prototype.editNodeMode = function () {
    console.log("Deprecated: Please use editNode instead of editNodeMode.");return this.manipulation.editNode.apply(this.manipulation, arguments);
  };
  Network.prototype.addEdgeMode = function () {
    return this.manipulation.addEdgeMode.apply(this.manipulation, arguments);
  };
  Network.prototype.editEdgeMode = function () {
    return this.manipulation.editEdgeMode.apply(this.manipulation, arguments);
  };
  Network.prototype.deleteSelected = function () {
    return this.manipulation.deleteSelected.apply(this.manipulation, arguments);
  };
  Network.prototype.getPositions = function () {
    return this.nodesHandler.getPositions.apply(this.nodesHandler, arguments);
  };
  Network.prototype.storePositions = function () {
    return this.nodesHandler.storePositions.apply(this.nodesHandler, arguments);
  };
  Network.prototype.moveNode = function () {
    return this.nodesHandler.moveNode.apply(this.nodesHandler, arguments);
  };
  Network.prototype.getBoundingBox = function () {
    return this.nodesHandler.getBoundingBox.apply(this.nodesHandler, arguments);
  };
  Network.prototype.getConnectedNodes = function (objectId) {
    if (this.body.nodes[objectId] !== undefined) {
      return this.nodesHandler.getConnectedNodes.apply(this.nodesHandler, arguments);
    } else {
      return this.edgesHandler.getConnectedNodes.apply(this.edgesHandler, arguments);
    }
  };
  Network.prototype.getConnectedEdges = function () {
    return this.nodesHandler.getConnectedEdges.apply(this.nodesHandler, arguments);
  };
  Network.prototype.startSimulation = function () {
    return this.physics.startSimulation.apply(this.physics, arguments);
  };
  Network.prototype.stopSimulation = function () {
    return this.physics.stopSimulation.apply(this.physics, arguments);
  };
  Network.prototype.stabilize = function () {
    return this.physics.stabilize.apply(this.physics, arguments);
  };
  Network.prototype.getSelection = function () {
    return this.selectionHandler.getSelection.apply(this.selectionHandler, arguments);
  };
  Network.prototype.setSelection = function () {
    return this.selectionHandler.setSelection.apply(this.selectionHandler, arguments);
  };
  Network.prototype.getSelectedNodes = function () {
    return this.selectionHandler.getSelectedNodes.apply(this.selectionHandler, arguments);
  };
  Network.prototype.getSelectedEdges = function () {
    return this.selectionHandler.getSelectedEdges.apply(this.selectionHandler, arguments);
  };
  Network.prototype.getNodeAt = function () {
    var node = this.selectionHandler.getNodeAt.apply(this.selectionHandler, arguments);
    if (node !== undefined && node.id !== undefined) {
      return node.id;
    }
    return node;
  };
  Network.prototype.getEdgeAt = function () {
    var edge = this.selectionHandler.getEdgeAt.apply(this.selectionHandler, arguments);
    if (edge !== undefined && edge.id !== undefined) {
      return edge.id;
    }
    return edge;
  };
  Network.prototype.selectNodes = function () {
    return this.selectionHandler.selectNodes.apply(this.selectionHandler, arguments);
  };
  Network.prototype.selectEdges = function () {
    return this.selectionHandler.selectEdges.apply(this.selectionHandler, arguments);
  };
  Network.prototype.unselectAll = function () {
    this.selectionHandler.unselectAll.apply(this.selectionHandler, arguments);
    this.redraw();
  };
  Network.prototype.redraw = function () {
    return this.renderer.redraw.apply(this.renderer, arguments);
  };
  Network.prototype.getScale = function () {
    return this.view.getScale.apply(this.view, arguments);
  };
  Network.prototype.getViewPosition = function () {
    return this.view.getViewPosition.apply(this.view, arguments);
  };
  Network.prototype.fit = function () {
    return this.view.fit.apply(this.view, arguments);
  };
  Network.prototype.moveTo = function () {
    return this.view.moveTo.apply(this.view, arguments);
  };
  Network.prototype.focus = function () {
    return this.view.focus.apply(this.view, arguments);
  };
  Network.prototype.releaseNode = function () {
    return this.view.releaseNode.apply(this.view, arguments);
  };
  Network.prototype.getOptionsFromConfigurator = function () {
    var options = {};
    if (this.configurator) {
      options = this.configurator.getOptions.apply(this.configurator);
    }
    return options;
  };

  module.exports = Network;

/***/ },
/* 59 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var util = __webpack_require__(1);

  /**
   * @class Groups
   * This class can store groups and options specific for groups.
   */

  var Groups = (function () {
    function Groups() {
      _classCallCheck(this, Groups);

      this.clear();
      this.defaultIndex = 0;
      this.groupsArray = [];
      this.groupIndex = 0;

      this.defaultGroups = [{ border: "#2B7CE9", background: "#97C2FC", highlight: { border: "#2B7CE9", background: "#D2E5FF" }, hover: { border: "#2B7CE9", background: "#D2E5FF" } }, // 0: blue
      { border: "#FFA500", background: "#FFFF00", highlight: { border: "#FFA500", background: "#FFFFA3" }, hover: { border: "#FFA500", background: "#FFFFA3" } }, // 1: yellow
      { border: "#FA0A10", background: "#FB7E81", highlight: { border: "#FA0A10", background: "#FFAFB1" }, hover: { border: "#FA0A10", background: "#FFAFB1" } }, // 2: red
      { border: "#41A906", background: "#7BE141", highlight: { border: "#41A906", background: "#A1EC76" }, hover: { border: "#41A906", background: "#A1EC76" } }, // 3: green
      { border: "#E129F0", background: "#EB7DF4", highlight: { border: "#E129F0", background: "#F0B3F5" }, hover: { border: "#E129F0", background: "#F0B3F5" } }, // 4: magenta
      { border: "#7C29F0", background: "#AD85E4", highlight: { border: "#7C29F0", background: "#D3BDF0" }, hover: { border: "#7C29F0", background: "#D3BDF0" } }, // 5: purple
      { border: "#C37F00", background: "#FFA807", highlight: { border: "#C37F00", background: "#FFCA66" }, hover: { border: "#C37F00", background: "#FFCA66" } }, // 6: orange
      { border: "#4220FB", background: "#6E6EFD", highlight: { border: "#4220FB", background: "#9B9BFD" }, hover: { border: "#4220FB", background: "#9B9BFD" } }, // 7: darkblue
      { border: "#FD5A77", background: "#FFC0CB", highlight: { border: "#FD5A77", background: "#FFD1D9" }, hover: { border: "#FD5A77", background: "#FFD1D9" } }, // 8: pink
      { border: "#4AD63A", background: "#C2FABC", highlight: { border: "#4AD63A", background: "#E6FFE3" }, hover: { border: "#4AD63A", background: "#E6FFE3" } }, // 9: mint

      { border: "#990000", background: "#EE0000", highlight: { border: "#BB0000", background: "#FF3333" }, hover: { border: "#BB0000", background: "#FF3333" } }, // 10:bright red

      { border: "#FF6000", background: "#FF6000", highlight: { border: "#FF6000", background: "#FF6000" }, hover: { border: "#FF6000", background: "#FF6000" } }, // 12: real orange
      { border: "#97C2FC", background: "#2B7CE9", highlight: { border: "#D2E5FF", background: "#2B7CE9" }, hover: { border: "#D2E5FF", background: "#2B7CE9" } }, // 13: blue
      { border: "#399605", background: "#255C03", highlight: { border: "#399605", background: "#255C03" }, hover: { border: "#399605", background: "#255C03" } }, // 14: green
      { border: "#B70054", background: "#FF007E", highlight: { border: "#B70054", background: "#FF007E" }, hover: { border: "#B70054", background: "#FF007E" } }, // 15: magenta
      { border: "#AD85E4", background: "#7C29F0", highlight: { border: "#D3BDF0", background: "#7C29F0" }, hover: { border: "#D3BDF0", background: "#7C29F0" } }, // 16: purple
      { border: "#4557FA", background: "#000EA1", highlight: { border: "#6E6EFD", background: "#000EA1" }, hover: { border: "#6E6EFD", background: "#000EA1" } }, // 17: darkblue
      { border: "#FFC0CB", background: "#FD5A77", highlight: { border: "#FFD1D9", background: "#FD5A77" }, hover: { border: "#FFD1D9", background: "#FD5A77" } }, // 18: pink
      { border: "#C2FABC", background: "#74D66A", highlight: { border: "#E6FFE3", background: "#74D66A" }, hover: { border: "#E6FFE3", background: "#74D66A" } }, // 19: mint

      { border: "#EE0000", background: "#990000", highlight: { border: "#FF3333", background: "#BB0000" }, hover: { border: "#FF3333", background: "#BB0000" } } // 20:bright red
      ];

      this.options = {};
      this.defaultOptions = {
        useDefaultGroups: true
      };
      util.extend(this.options, this.defaultOptions);
    }

    _createClass(Groups, [{
      key: "setOptions",
      value: function setOptions(options) {
        var optionFields = ['useDefaultGroups'];

        if (options !== undefined) {
          for (var groupName in options) {
            if (options.hasOwnProperty(groupName)) {
              if (optionFields.indexOf(groupName) === -1) {
                var group = options[groupName];
                this.add(groupName, group);
              }
            }
          }
        }
      }

      /**
       * Clear all groups
       */
    }, {
      key: "clear",
      value: function clear() {
        this.groups = {};
        this.groupsArray = [];
      }

      /**
       * get group options of a groupname. If groupname is not found, a new group
       * is added.
       * @param {*} groupname        Can be a number, string, Date, etc.
       * @return {Object} group      The created group, containing all group options
       */
    }, {
      key: "get",
      value: function get(groupname) {
        var group = this.groups[groupname];
        if (group === undefined) {
          if (this.options.useDefaultGroups === false && this.groupsArray.length > 0) {
            // create new group
            var index = this.groupIndex % this.groupsArray.length;
            this.groupIndex++;
            group = {};
            group.color = this.groups[this.groupsArray[index]];
            this.groups[groupname] = group;
          } else {
            // create new group
            var index = this.defaultIndex % this.defaultGroups.length;
            this.defaultIndex++;
            group = {};
            group.color = this.defaultGroups[index];
            this.groups[groupname] = group;
          }
        }

        return group;
      }

      /**
       * Add a custom group style
       * @param {String} groupName
       * @param {Object} style       An object containing borderColor,
       *                             backgroundColor, etc.
       * @return {Object} group      The created group object
       */
    }, {
      key: "add",
      value: function add(groupName, style) {
        this.groups[groupName] = style;
        this.groupsArray.push(groupName);
        return style;
      }
    }]);

    return Groups;
  })();

  exports["default"] = Groups;
  module.exports = exports["default"];

/***/ },
/* 60 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _componentsNode = __webpack_require__(61);

  var _componentsNode2 = _interopRequireDefault(_componentsNode);

  var _componentsSharedLabel = __webpack_require__(62);

  var _componentsSharedLabel2 = _interopRequireDefault(_componentsSharedLabel);

  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);

  var NodesHandler = (function () {
    function NodesHandler(body, images, groups, layoutEngine) {
      var _this = this;

      _classCallCheck(this, NodesHandler);

      this.body = body;
      this.images = images;
      this.groups = groups;
      this.layoutEngine = layoutEngine;

      // create the node API in the body container
      this.body.functions.createNode = this.create.bind(this);

      this.nodesListeners = {
        add: function add(event, params) {
          _this.add(params.items);
        },
        update: function update(event, params) {
          _this.update(params.items, params.data);
        },
        remove: function remove(event, params) {
          _this.remove(params.items);
        }
      };

      this.options = {};
      this.defaultOptions = {
        borderWidth: 1,
        borderWidthSelected: 2,
        brokenImage: undefined,
        color: {
          border: '#2B7CE9',
          background: '#97C2FC',
          highlight: {
            border: '#2B7CE9',
            background: '#D2E5FF'
          },
          hover: {
            border: '#2B7CE9',
            background: '#D2E5FF'
          }
        },
        fixed: {
          x: false,
          y: false
        },
        font: {
          color: '#343434',
          size: 14, // px
          face: 'arial',
          background: 'none',
          strokeWidth: 0, // px
          strokeColor: '#ffffff',
          align: 'horizontal'
        },
        group: undefined,
        hidden: false,
        icon: {
          face: 'FontAwesome', //'FontAwesome',
          code: undefined, //'\uf007',
          size: 50, //50,
          color: '#2B7CE9' //'#aa00ff'
        },
        image: undefined, // --> URL
        label: undefined,
        labelHighlightBold: true,
        level: undefined,
        mass: 1,
        physics: true,
        scaling: {
          min: 10,
          max: 30,
          label: {
            enabled: false,
            min: 14,
            max: 30,
            maxVisible: 30,
            drawThreshold: 5
          },
          customScalingFunction: function customScalingFunction(min, max, total, value) {
            if (max === min) {
              return 0.5;
            } else {
              var scale = 1 / (max - min);
              return Math.max(0, (value - min) * scale);
            }
          }
        },
        shadow: {
          enabled: false,
          color: 'rgba(0,0,0,0.5)',
          size: 10,
          x: 5,
          y: 5
        },
        shape: 'ellipse',
        shapeProperties: {
          borderDashes: false, // only for borders
          borderRadius: 6, // only for box shape
          useImageSize: false, // only for image and circularImage shapes
          useBorderWithImage: false // only for image shape
        },
        size: 25,
        title: undefined,
        value: undefined,
        x: undefined,
        y: undefined
      };
      util.extend(this.options, this.defaultOptions);

      this.bindEventListeners();
    }

    _createClass(NodesHandler, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this2 = this;

        // refresh the nodes. Used when reverting from hierarchical layout
        this.body.emitter.on('refreshNodes', this.refresh.bind(this));
        this.body.emitter.on('refresh', this.refresh.bind(this));
        this.body.emitter.on('destroy', function () {
          util.forEach(_this2.nodesListeners, function (callback, event) {
            if (_this2.body.data.nodes) _this2.body.data.nodes.off(event, callback);
          });
          delete _this2.body.functions.createNode;
          delete _this2.nodesListeners.add;
          delete _this2.nodesListeners.update;
          delete _this2.nodesListeners.remove;
          delete _this2.nodesListeners;
        });
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          _componentsNode2['default'].parseOptions(this.options, options);

          // update the shape in all nodes
          if (options.shape !== undefined) {
            for (var nodeId in this.body.nodes) {
              if (this.body.nodes.hasOwnProperty(nodeId)) {
                this.body.nodes[nodeId].updateShape();
              }
            }
          }

          // update the font in all nodes
          if (options.font !== undefined) {
            _componentsSharedLabel2['default'].parseOptions(this.options.font, options);
            for (var nodeId in this.body.nodes) {
              if (this.body.nodes.hasOwnProperty(nodeId)) {
                this.body.nodes[nodeId].updateLabelModule();
                this.body.nodes[nodeId]._reset();
              }
            }
          }

          // update the shape size in all nodes
          if (options.size !== undefined) {
            for (var nodeId in this.body.nodes) {
              if (this.body.nodes.hasOwnProperty(nodeId)) {
                this.body.nodes[nodeId]._reset();
              }
            }
          }

          // update the state of the letiables if needed
          if (options.hidden !== undefined || options.physics !== undefined) {
            this.body.emitter.emit('_dataChanged');
          }
        }
      }

      /**
       * Set a data set with nodes for the network
       * @param {Array | DataSet | DataView} nodes         The data containing the nodes.
       * @private
       */
    }, {
      key: 'setData',
      value: function setData(nodes) {
        var _this3 = this;

        var doNotEmit = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var oldNodesData = this.body.data.nodes;

        if (nodes instanceof DataSet || nodes instanceof DataView) {
          this.body.data.nodes = nodes;
        } else if (Array.isArray(nodes)) {
          this.body.data.nodes = new DataSet();
          this.body.data.nodes.add(nodes);
        } else if (!nodes) {
          this.body.data.nodes = new DataSet();
        } else {
          throw new TypeError('Array or DataSet expected');
        }

        if (oldNodesData) {
          // unsubscribe from old dataset
          util.forEach(this.nodesListeners, function (callback, event) {
            oldNodesData.off(event, callback);
          });
        }

        // remove drawn nodes
        this.body.nodes = {};

        if (this.body.data.nodes) {
          (function () {
            // subscribe to new dataset
            var me = _this3;
            util.forEach(_this3.nodesListeners, function (callback, event) {
              me.body.data.nodes.on(event, callback);
            });

            // draw all new nodes
            var ids = _this3.body.data.nodes.getIds();
            _this3.add(ids, true);
          })();
        }

        if (doNotEmit === false) {
          this.body.emitter.emit("_dataChanged");
        }
      }

      /**
       * Add nodes
       * @param {Number[] | String[]} ids
       * @private
       */
    }, {
      key: 'add',
      value: function add(ids) {
        var doNotEmit = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var id = undefined;
        var newNodes = [];
        for (var i = 0; i < ids.length; i++) {
          id = ids[i];
          var properties = this.body.data.nodes.get(id);
          var node = this.create(properties);
          newNodes.push(node);
          this.body.nodes[id] = node; // note: this may replace an existing node
        }

        this.layoutEngine.positionInitially(newNodes);

        if (doNotEmit === false) {
          this.body.emitter.emit("_dataChanged");
        }
      }

      /**
       * Update existing nodes, or create them when not yet existing
       * @param {Number[] | String[]} ids
       * @private
       */
    }, {
      key: 'update',
      value: function update(ids, changedData) {
        var nodes = this.body.nodes;
        var dataChanged = false;
        for (var i = 0; i < ids.length; i++) {
          var id = ids[i];
          var node = nodes[id];
          var data = changedData[i];
          if (node !== undefined) {
            // update node
            dataChanged = node.setOptions(data);
          } else {
            dataChanged = true;
            // create node
            node = this.create(data);
            nodes[id] = node;
          }
        }
        if (dataChanged === true) {
          this.body.emitter.emit("_dataChanged");
        } else {
          this.body.emitter.emit("_dataUpdated");
        }
      }

      /**
       * Remove existing nodes. If nodes do not exist, the method will just ignore it.
       * @param {Number[] | String[]} ids
       * @private
       */
    }, {
      key: 'remove',
      value: function remove(ids) {
        var nodes = this.body.nodes;

        for (var i = 0; i < ids.length; i++) {
          var id = ids[i];
          delete nodes[id];
        }

        this.body.emitter.emit("_dataChanged");
      }

      /**
       * create a node
       * @param properties
       * @param constructorClass
       */
    }, {
      key: 'create',
      value: function create(properties) {
        var constructorClass = arguments.length <= 1 || arguments[1] === undefined ? _componentsNode2['default'] : arguments[1];

        return new constructorClass(properties, this.body, this.images, this.groups, this.options);
      }
    }, {
      key: 'refresh',
      value: function refresh() {
        var clearPositions = arguments.length <= 0 || arguments[0] === undefined ? false : arguments[0];

        var nodes = this.body.nodes;
        for (var nodeId in nodes) {
          var node = undefined;
          if (nodes.hasOwnProperty(nodeId)) {
            node = nodes[nodeId];
          }
          var data = this.body.data.nodes._data[nodeId];
          if (node !== undefined && data !== undefined) {
            if (clearPositions === true) {
              node.setOptions({ x: null, y: null });
            }
            node.setOptions({ fixed: false });
            node.setOptions(data);
          }
        }
      }

      /**
       * Returns the positions of the nodes.
       * @param ids  --> optional, can be array of nodeIds, can be string
       * @returns {{}}
       */
    }, {
      key: 'getPositions',
      value: function getPositions(ids) {
        var dataArray = {};
        if (ids !== undefined) {
          if (Array.isArray(ids) === true) {
            for (var i = 0; i < ids.length; i++) {
              if (this.body.nodes[ids[i]] !== undefined) {
                var node = this.body.nodes[ids[i]];
                dataArray[ids[i]] = { x: Math.round(node.x), y: Math.round(node.y) };
              }
            }
          } else {
            if (this.body.nodes[ids] !== undefined) {
              var node = this.body.nodes[ids];
              dataArray[ids] = { x: Math.round(node.x), y: Math.round(node.y) };
            }
          }
        } else {
          for (var i = 0; i < this.body.nodeIndices.length; i++) {
            var node = this.body.nodes[this.body.nodeIndices[i]];
            dataArray[this.body.nodeIndices[i]] = { x: Math.round(node.x), y: Math.round(node.y) };
          }
        }
        return dataArray;
      }

      /**
       * Load the XY positions of the nodes into the dataset.
       */
    }, {
      key: 'storePositions',
      value: function storePositions() {
        // todo: add support for clusters and hierarchical.
        var dataArray = [];
        var dataset = this.body.data.nodes.getDataSet();

        for (var nodeId in dataset._data) {
          if (dataset._data.hasOwnProperty(nodeId)) {
            var node = this.body.nodes[nodeId];
            if (dataset._data[nodeId].x != Math.round(node.x) || dataset._data[nodeId].y != Math.round(node.y)) {
              dataArray.push({ id: node.id, x: Math.round(node.x), y: Math.round(node.y) });
            }
          }
        }
        dataset.update(dataArray);
      }

      /**
       * get the bounding box of a node.
       * @param nodeId
       * @returns {j|*}
       */
    }, {
      key: 'getBoundingBox',
      value: function getBoundingBox(nodeId) {
        if (this.body.nodes[nodeId] !== undefined) {
          return this.body.nodes[nodeId].shape.boundingBox;
        }
      }

      /**
       * Get the Ids of nodes connected to this node.
       * @param nodeId
       * @returns {Array}
       */
    }, {
      key: 'getConnectedNodes',
      value: function getConnectedNodes(nodeId) {
        var nodeList = [];
        if (this.body.nodes[nodeId] !== undefined) {
          var node = this.body.nodes[nodeId];
          var nodeObj = {}; // used to quickly check if node already exists
          for (var i = 0; i < node.edges.length; i++) {
            var edge = node.edges[i];
            if (edge.toId == node.id) {
              // these are double equals since ids can be numeric or string
              if (nodeObj[edge.fromId] === undefined) {
                nodeList.push(edge.fromId);
                nodeObj[edge.fromId] = true;
              }
            } else if (edge.fromId == node.id) {
              // these are double equals since ids can be numeric or string
              if (nodeObj[edge.toId] === undefined) {
                nodeList.push(edge.toId);
                nodeObj[edge.toId] = true;
              }
            }
          }
        }
        return nodeList;
      }

      /**
       * Get the ids of the edges connected to this node.
       * @param nodeId
       * @returns {*}
       */
    }, {
      key: 'getConnectedEdges',
      value: function getConnectedEdges(nodeId) {
        var edgeList = [];
        if (this.body.nodes[nodeId] !== undefined) {
          var node = this.body.nodes[nodeId];
          for (var i = 0; i < node.edges.length; i++) {
            edgeList.push(node.edges[i].id);
          }
        } else {
          console.log("NodeId provided for getConnectedEdges does not exist. Provided: ", nodeId);
        }
        return edgeList;
      }

      /**
       * Move a node.
       * @param String nodeId
       * @param Number x
       * @param Number y
       */
    }, {
      key: 'moveNode',
      value: function moveNode(nodeId, x, y) {
        var _this4 = this;

        if (this.body.nodes[nodeId] !== undefined) {
          this.body.nodes[nodeId].x = Number(x);
          this.body.nodes[nodeId].y = Number(y);
          setTimeout(function () {
            _this4.body.emitter.emit("startSimulation");
          }, 0);
        } else {
          console.log("Node id supplied to moveNode does not exist. Provided: ", nodeId);
        }
      }
    }]);

    return NodesHandler;
  })();

  exports['default'] = NodesHandler;
  module.exports = exports['default'];

/***/ },
/* 61 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _sharedLabel = __webpack_require__(62);

  var _sharedLabel2 = _interopRequireDefault(_sharedLabel);

  var _nodesShapesBox = __webpack_require__(63);

  var _nodesShapesBox2 = _interopRequireDefault(_nodesShapesBox);

  var _nodesShapesCircle = __webpack_require__(65);

  var _nodesShapesCircle2 = _interopRequireDefault(_nodesShapesCircle);

  var _nodesShapesCircularImage = __webpack_require__(67);

  var _nodesShapesCircularImage2 = _interopRequireDefault(_nodesShapesCircularImage);

  var _nodesShapesDatabase = __webpack_require__(68);

  var _nodesShapesDatabase2 = _interopRequireDefault(_nodesShapesDatabase);

  var _nodesShapesDiamond = __webpack_require__(69);

  var _nodesShapesDiamond2 = _interopRequireDefault(_nodesShapesDiamond);

  var _nodesShapesDot = __webpack_require__(71);

  var _nodesShapesDot2 = _interopRequireDefault(_nodesShapesDot);

  var _nodesShapesEllipse = __webpack_require__(72);

  var _nodesShapesEllipse2 = _interopRequireDefault(_nodesShapesEllipse);

  var _nodesShapesIcon = __webpack_require__(73);

  var _nodesShapesIcon2 = _interopRequireDefault(_nodesShapesIcon);

  var _nodesShapesImage = __webpack_require__(74);

  var _nodesShapesImage2 = _interopRequireDefault(_nodesShapesImage);

  var _nodesShapesSquare = __webpack_require__(75);

  var _nodesShapesSquare2 = _interopRequireDefault(_nodesShapesSquare);

  var _nodesShapesStar = __webpack_require__(76);

  var _nodesShapesStar2 = _interopRequireDefault(_nodesShapesStar);

  var _nodesShapesText = __webpack_require__(77);

  var _nodesShapesText2 = _interopRequireDefault(_nodesShapesText);

  var _nodesShapesTriangle = __webpack_require__(78);

  var _nodesShapesTriangle2 = _interopRequireDefault(_nodesShapesTriangle);

  var _nodesShapesTriangleDown = __webpack_require__(79);

  var _nodesShapesTriangleDown2 = _interopRequireDefault(_nodesShapesTriangleDown);

  var _sharedValidator = __webpack_require__(46);

  var _sharedValidator2 = _interopRequireDefault(_sharedValidator);

  var util = __webpack_require__(1);

  /**
   * @class Node
   * A node. A node can be connected to other nodes via one or multiple edges.
   * @param {object} options An object containing options for the node. All
   *                            options are optional, except for the id.
   *                              {number} id     Id of the node. Required
   *                              {string} label  Text label for the node
   *                              {number} x      Horizontal position of the node
   *                              {number} y      Vertical position of the node
   *                              {string} shape  Node shape, available:
   *                                              "database", "circle", "ellipse",
   *                                              "box", "image", "text", "dot",
   *                                              "star", "triangle", "triangleDown",
   *                                              "square", "icon"
   *                              {string} image  An image url
   *                              {string} title  An title text, can be HTML
   *                              {anytype} group A group name or number
   * @param {Network.Images} imagelist    A list with images. Only needed
   *                                            when the node has an image
   * @param {Network.Groups} grouplist    A list with groups. Needed for
   *                                            retrieving group options
   * @param {Object}               constants    An object with default values for
   *                                            example for the color
   *
   */

  var Node = (function () {
    function Node(options, body, imagelist, grouplist, globalOptions) {
      _classCallCheck(this, Node);

      this.options = util.bridgeObject(globalOptions);
      this.globalOptions = globalOptions;
      this.body = body;

      this.edges = []; // all edges connected to this node

      // set defaults for the options
      this.id = undefined;
      this.imagelist = imagelist;
      this.grouplist = grouplist;

      // state options
      this.x = undefined;
      this.y = undefined;
      this.baseSize = this.options.size;
      this.baseFontSize = this.options.font.size;
      this.predefinedPosition = false; // used to check if initial fit should just take the range or approximate
      this.selected = false;
      this.hover = false;

      this.labelModule = new _sharedLabel2['default'](this.body, this.options);
      this.setOptions(options);
    }

    /**
     * Attach a edge to the node
     * @param {Edge} edge
     */

    _createClass(Node, [{
      key: 'attachEdge',
      value: function attachEdge(edge) {
        if (this.edges.indexOf(edge) === -1) {
          this.edges.push(edge);
        }
      }

      /**
       * Detach a edge from the node
       * @param {Edge} edge
       */
    }, {
      key: 'detachEdge',
      value: function detachEdge(edge) {
        var index = this.edges.indexOf(edge);
        if (index != -1) {
          this.edges.splice(index, 1);
        }
      }

      /**
       * Set or overwrite options for the node
       * @param {Object} options an object with options
       * @param {Object} constants  and object with default, global options
       */
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        var currentShape = this.options.shape;
        if (!options) {
          return;
        }
        // basic options
        if (options.id !== undefined) {
          this.id = options.id;
        }

        if (this.id === undefined) {
          throw "Node must have an id";
        }

        // set these options locally
        // clear x and y positions
        if (options.x !== undefined) {
          if (options.x === null) {
            this.x = undefined;this.predefinedPosition = false;
          } else {
            this.x = parseInt(options.x);this.predefinedPosition = true;
          }
        }
        if (options.y !== undefined) {
          if (options.y === null) {
            this.y = undefined;this.predefinedPosition = false;
          } else {
            this.y = parseInt(options.y);this.predefinedPosition = true;
          }
        }
        if (options.size !== undefined) {
          this.baseSize = options.size;
        }
        if (options.value !== undefined) {
          options.value = parseFloat(options.value);
        }

        // copy group options
        if (typeof options.group === 'number' || typeof options.group === 'string' && options.group != '') {
          var groupObj = this.grouplist.get(options.group);
          util.deepExtend(this.options, groupObj);
          // the color object needs to be completely defined. Since groups can partially overwrite the colors, we parse it again, just in case.
          this.options.color = util.parseColor(this.options.color);
        }

        // this transforms all shorthands into fully defined options
        Node.parseOptions(this.options, options, true, this.globalOptions);

        // load the images
        if (this.options.image !== undefined) {
          if (this.imagelist) {
            this.imageObj = this.imagelist.load(this.options.image, this.options.brokenImage, this.id);
          } else {
            throw "No imagelist provided";
          }
        }

        this.updateLabelModule();
        this.updateShape(currentShape);

        if (options.hidden !== undefined || options.physics !== undefined) {
          return true;
        }
        return false;
      }

      /**
       * This process all possible shorthands in the new options and makes sure that the parentOptions are fully defined.
       * Static so it can also be used by the handler.
       * @param parentOptions
       * @param newOptions
       * @param allowDeletion
       * @param globalOptions
       */
    }, {
      key: 'updateLabelModule',
      value: function updateLabelModule() {
        if (this.options.label === undefined || this.options.label === null) {
          this.options.label = '';
        }
        this.labelModule.setOptions(this.options, true);
        if (this.labelModule.baseSize !== undefined) {
          this.baseFontSize = this.labelModule.baseSize;
        }
      }
    }, {
      key: 'updateShape',
      value: function updateShape(currentShape) {
        if (currentShape === this.options.shape && this.shape) {
          this.shape.setOptions(this.options, this.imageObj);
        } else {
          // choose draw method depending on the shape
          switch (this.options.shape) {
            case 'box':
              this.shape = new _nodesShapesBox2['default'](this.options, this.body, this.labelModule);
              break;
            case 'circle':
              this.shape = new _nodesShapesCircle2['default'](this.options, this.body, this.labelModule);
              break;
            case 'circularImage':
              this.shape = new _nodesShapesCircularImage2['default'](this.options, this.body, this.labelModule, this.imageObj);
              break;
            case 'database':
              this.shape = new _nodesShapesDatabase2['default'](this.options, this.body, this.labelModule);
              break;
            case 'diamond':
              this.shape = new _nodesShapesDiamond2['default'](this.options, this.body, this.labelModule);
              break;
            case 'dot':
              this.shape = new _nodesShapesDot2['default'](this.options, this.body, this.labelModule);
              break;
            case 'ellipse':
              this.shape = new _nodesShapesEllipse2['default'](this.options, this.body, this.labelModule);
              break;
            case 'icon':
              this.shape = new _nodesShapesIcon2['default'](this.options, this.body, this.labelModule);
              break;
            case 'image':
              this.shape = new _nodesShapesImage2['default'](this.options, this.body, this.labelModule, this.imageObj);
              break;
            case 'square':
              this.shape = new _nodesShapesSquare2['default'](this.options, this.body, this.labelModule);
              break;
            case 'star':
              this.shape = new _nodesShapesStar2['default'](this.options, this.body, this.labelModule);
              break;
            case 'text':
              this.shape = new _nodesShapesText2['default'](this.options, this.body, this.labelModule);
              break;
            case 'triangle':
              this.shape = new _nodesShapesTriangle2['default'](this.options, this.body, this.labelModule);
              break;
            case 'triangleDown':
              this.shape = new _nodesShapesTriangleDown2['default'](this.options, this.body, this.labelModule);
              break;
            default:
              this.shape = new _nodesShapesEllipse2['default'](this.options, this.body, this.labelModule);
              break;
          }
        }
        this._reset();
      }

      /**
       * select this node
       */
    }, {
      key: 'select',
      value: function select() {
        this.selected = true;
        this._reset();
      }

      /**
       * unselect this node
       */
    }, {
      key: 'unselect',
      value: function unselect() {
        this.selected = false;
        this._reset();
      }

      /**
       * Reset the calculated size of the node, forces it to recalculate its size
       * @private
       */
    }, {
      key: '_reset',
      value: function _reset() {
        this.shape.width = undefined;
        this.shape.height = undefined;
      }

      /**
       * get the title of this node.
       * @return {string} title    The title of the node, or undefined when no title
       *                           has been set.
       */
    }, {
      key: 'getTitle',
      value: function getTitle() {
        return this.options.title;
      }

      /**
       * Calculate the distance to the border of the Node
       * @param {CanvasRenderingContext2D}   ctx
       * @param {Number} angle        Angle in radians
       * @returns {number} distance   Distance to the border in pixels
       */
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this.shape.distanceToBorder(ctx, angle);
      }

      /**
       * Check if this node has a fixed x and y position
       * @return {boolean}      true if fixed, false if not
       */
    }, {
      key: 'isFixed',
      value: function isFixed() {
        return this.options.fixed.x && this.options.fixed.y;
      }

      /**
       * check if this node is selecte
       * @return {boolean} selected   True if node is selected, else false
       */
    }, {
      key: 'isSelected',
      value: function isSelected() {
        return this.selected;
      }

      /**
       * Retrieve the value of the node. Can be undefined
       * @return {Number} value
       */
    }, {
      key: 'getValue',
      value: function getValue() {
        return this.options.value;
      }

      /**
       * Adjust the value range of the node. The node will adjust it's size
       * based on its value.
       * @param {Number} min
       * @param {Number} max
       */
    }, {
      key: 'setValueRange',
      value: function setValueRange(min, max, total) {
        if (this.options.value !== undefined) {
          var scale = this.options.scaling.customScalingFunction(min, max, total, this.options.value);
          var sizeDiff = this.options.scaling.max - this.options.scaling.min;
          if (this.options.scaling.label.enabled === true) {
            var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
            this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
          }
          this.options.size = this.options.scaling.min + scale * sizeDiff;
        } else {
          this.options.size = this.baseSize;
          this.options.font.size = this.baseFontSize;
        }

        this.updateLabelModule();
      }

      /**
       * Draw this node in the given canvas
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
       * @param {CanvasRenderingContext2D}   ctx
       */
    }, {
      key: 'draw',
      value: function draw(ctx) {
        this.shape.draw(ctx, this.x, this.y, this.selected, this.hover);
      }

      /**
       * Update the bounding box of the shape
       */
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(ctx) {
        this.shape.updateBoundingBox(this.x, this.y, ctx);
      }

      /**
       * Recalculate the size of this node in the given canvas
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
       * @param {CanvasRenderingContext2D}   ctx
       */
    }, {
      key: 'resize',
      value: function resize(ctx) {
        this.shape.resize(ctx, this.selected);
      }

      /**
       * Check if this object is overlapping with the provided object
       * @param {Object} obj   an object with parameters left, top, right, bottom
       * @return {boolean}     True if location is located on node
       */
    }, {
      key: 'isOverlappingWith',
      value: function isOverlappingWith(obj) {
        return this.shape.left < obj.right && this.shape.left + this.shape.width > obj.left && this.shape.top < obj.bottom && this.shape.top + this.shape.height > obj.top;
      }

      /**
       * Check if this object is overlapping with the provided object
       * @param {Object} obj   an object with parameters left, top, right, bottom
       * @return {boolean}     True if location is located on node
       */
    }, {
      key: 'isBoundingBoxOverlappingWith',
      value: function isBoundingBoxOverlappingWith(obj) {
        return this.shape.boundingBox.left < obj.right && this.shape.boundingBox.right > obj.left && this.shape.boundingBox.top < obj.bottom && this.shape.boundingBox.bottom > obj.top;
      }
    }], [{
      key: 'parseOptions',
      value: function parseOptions(parentOptions, newOptions) {
        var allowDeletion = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];
        var globalOptions = arguments.length <= 3 || arguments[3] === undefined ? {} : arguments[3];

        var fields = ['color', 'font', 'fixed', 'shadow'];
        util.selectiveNotDeepExtend(fields, parentOptions, newOptions, allowDeletion);

        // merge the shadow options into the parent.
        util.mergeOptions(parentOptions, newOptions, 'shadow', allowDeletion, globalOptions);

        // individual shape newOptions
        if (newOptions.color !== undefined && newOptions.color !== null) {
          var parsedColor = util.parseColor(newOptions.color);
          util.fillIfDefined(parentOptions.color, parsedColor);
        } else if (allowDeletion === true && newOptions.color === null) {
          parentOptions.color = util.bridgeObject(globalOptions.color); // set the object back to the global options
        }

        // handle the fixed options
        if (newOptions.fixed !== undefined && newOptions.fixed !== null) {
          if (typeof newOptions.fixed === 'boolean') {
            parentOptions.fixed.x = newOptions.fixed;
            parentOptions.fixed.y = newOptions.fixed;
          } else {
            if (newOptions.fixed.x !== undefined && typeof newOptions.fixed.x === 'boolean') {
              parentOptions.fixed.x = newOptions.fixed.x;
            }
            if (newOptions.fixed.y !== undefined && typeof newOptions.fixed.y === 'boolean') {
              parentOptions.fixed.y = newOptions.fixed.y;
            }
          }
        }

        // handle the font options
        if (newOptions.font !== undefined && newOptions.font !== null) {
          _sharedLabel2['default'].parseOptions(parentOptions.font, newOptions);
        } else if (allowDeletion === true && newOptions.font === null) {
          parentOptions.font = util.bridgeObject(globalOptions.font); // set the object back to the global options
        }

        // handle the scaling options, specifically the label part
        if (newOptions.scaling !== undefined) {
          util.mergeOptions(parentOptions.scaling, newOptions.scaling, 'label', allowDeletion, globalOptions.scaling);
        }
      }
    }]);

    return Node;
  })();

  exports['default'] = Node;
  module.exports = exports['default'];

/***/ },
/* 62 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var util = __webpack_require__(1);

  var Label = (function () {
    function Label(body, options) {
      _classCallCheck(this, Label);

      this.body = body;

      this.pointToSelf = false;
      this.baseSize = undefined;
      this.fontOptions = {};
      this.setOptions(options);
      this.size = { top: 0, left: 0, width: 0, height: 0, yLine: 0 }; // could be cached
    }

    _createClass(Label, [{
      key: 'setOptions',
      value: function setOptions(options) {
        var allowDeletion = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        this.nodeOptions = options;

        // We want to keep the font options seperated from the node options.
        // The node options have to mirror the globals when they are not overruled.
        this.fontOptions = util.deepExtend({}, options.font, true);

        if (options.label !== undefined) {
          this.labelDirty = true;
        }

        if (options.font !== undefined) {
          Label.parseOptions(this.fontOptions, options, allowDeletion);
          if (typeof options.font === 'string') {
            this.baseSize = this.fontOptions.size;
          } else if (typeof options.font === 'object') {
            if (options.font.size !== undefined) {
              this.baseSize = options.font.size;
            }
          }
        }
      }
    }, {
      key: 'draw',

      /**
       * Main function. This is called from anything that wants to draw a label.
       * @param ctx
       * @param x
       * @param y
       * @param selected
       * @param baseline
       */
      value: function draw(ctx, x, y, selected) {
        var baseline = arguments.length <= 4 || arguments[4] === undefined ? 'middle' : arguments[4];

        // if no label, return
        if (this.nodeOptions.label === undefined) return;

        // check if we have to render the label
        var viewFontSize = this.fontOptions.size * this.body.view.scale;
        if (this.nodeOptions.label && viewFontSize < this.nodeOptions.scaling.label.drawThreshold - 1) return;

        // update the size cache if required
        this.calculateLabelSize(ctx, selected, x, y, baseline);

        // create the fontfill background
        this._drawBackground(ctx);
        // draw text
        this._drawText(ctx, selected, x, y, baseline);
      }

      /**
       * Draws the label background
       * @param {CanvasRenderingContext2D} ctx
       * @private
       */
    }, {
      key: '_drawBackground',
      value: function _drawBackground(ctx) {
        if (this.fontOptions.background !== undefined && this.fontOptions.background !== "none") {
          ctx.fillStyle = this.fontOptions.background;

          var lineMargin = 2;

          switch (this.fontOptions.align) {
            case 'middle':
              ctx.fillRect(-this.size.width * 0.5, -this.size.height * 0.5, this.size.width, this.size.height);
              break;
            case 'top':
              ctx.fillRect(-this.size.width * 0.5, -(this.size.height + lineMargin), this.size.width, this.size.height);
              break;
            case 'bottom':
              ctx.fillRect(-this.size.width * 0.5, lineMargin, this.size.width, this.size.height);
              break;
            default:
              ctx.fillRect(this.size.left, this.size.top - 0.5 * lineMargin, this.size.width, this.size.height);
              break;
          }
        }
      }

      /**
       *
       * @param ctx
       * @param x
       * @param baseline
       * @private
       */
    }, {
      key: '_drawText',
      value: function _drawText(ctx, selected, x, y) {
        var baseline = arguments.length <= 4 || arguments[4] === undefined ? 'middle' : arguments[4];

        var fontSize = this.fontOptions.size;
        var viewFontSize = fontSize * this.body.view.scale;
        // this ensures that there will not be HUGE letters on screen by setting an upper limit on the visible text size (regardless of zoomLevel)
        if (viewFontSize >= this.nodeOptions.scaling.label.maxVisible) {
          fontSize = Number(this.nodeOptions.scaling.label.maxVisible) / this.body.view.scale;
        }

        var yLine = this.size.yLine;

        var _getColor2 = this._getColor(viewFontSize);

        var _getColor22 = _slicedToArray(_getColor2, 2);

        var fontColor = _getColor22[0];
        var strokeColor = _getColor22[1];

        // configure context for drawing the text

        var _setAlignment2 = this._setAlignment(ctx, x, yLine, baseline);

        var _setAlignment22 = _slicedToArray(_setAlignment2, 2);

        x = _setAlignment22[0];
        yLine = _setAlignment22[1];
        ctx.font = (selected && this.nodeOptions.labelHighlightBold ? 'bold ' : '') + fontSize + "px " + this.fontOptions.face;
        ctx.fillStyle = fontColor;
        ctx.textAlign = 'center';

        // set the strokeWidth
        if (this.fontOptions.strokeWidth > 0) {
          ctx.lineWidth = this.fontOptions.strokeWidth;
          ctx.strokeStyle = strokeColor;
          ctx.lineJoin = 'round';
        }

        // draw the text
        for (var i = 0; i < this.lineCount; i++) {
          if (this.fontOptions.strokeWidth > 0) {
            ctx.strokeText(this.lines[i], x, yLine);
          }
          ctx.fillText(this.lines[i], x, yLine);
          yLine += fontSize;
        }
      }
    }, {
      key: '_setAlignment',
      value: function _setAlignment(ctx, x, yLine, baseline) {
        // check for label alignment (for edges)
        // TODO: make alignment for nodes
        if (this.fontOptions.align !== 'horizontal' && this.pointToSelf === false) {
          x = 0;
          yLine = 0;

          var lineMargin = 2;
          if (this.fontOptions.align === 'top') {
            ctx.textBaseline = 'alphabetic';
            yLine -= 2 * lineMargin; // distance from edge, required because we use alphabetic. Alphabetic has less difference between browsers
          } else if (this.fontOptions.align === 'bottom') {
              ctx.textBaseline = 'hanging';
              yLine += 2 * lineMargin; // distance from edge, required because we use hanging. Hanging has less difference between browsers
            } else {
                ctx.textBaseline = 'middle';
              }
        } else {
          ctx.textBaseline = baseline;
        }

        return [x, yLine];
      }

      /**
       * fade in when relative scale is between threshold and threshold - 1.
       * If the relative scale would be smaller than threshold -1 the draw function would have returned before coming here.
       *
       * @param viewFontSize
       * @returns {*[]}
       * @private
       */
    }, {
      key: '_getColor',
      value: function _getColor(viewFontSize) {
        var fontColor = this.fontOptions.color || '#000000';
        var strokeColor = this.fontOptions.strokeColor || '#ffffff';
        if (viewFontSize <= this.nodeOptions.scaling.label.drawThreshold) {
          var opacity = Math.max(0, Math.min(1, 1 - (this.nodeOptions.scaling.label.drawThreshold - viewFontSize)));
          fontColor = util.overrideOpacity(fontColor, opacity);
          strokeColor = util.overrideOpacity(strokeColor, opacity);
        }
        return [fontColor, strokeColor];
      }

      /**
       *
       * @param ctx
       * @param selected
       * @returns {{width: number, height: number}}
       */
    }, {
      key: 'getTextSize',
      value: function getTextSize(ctx) {
        var selected = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var size = {
          width: this._processLabel(ctx, selected),
          height: this.fontOptions.size * this.lineCount,
          lineCount: this.lineCount
        };
        return size;
      }

      /**
       *
       * @param ctx
       * @param selected
       * @param x
       * @param y
       * @param baseline
       */
    }, {
      key: 'calculateLabelSize',
      value: function calculateLabelSize(ctx, selected) {
        var x = arguments.length <= 2 || arguments[2] === undefined ? 0 : arguments[2];
        var y = arguments.length <= 3 || arguments[3] === undefined ? 0 : arguments[3];
        var baseline = arguments.length <= 4 || arguments[4] === undefined ? 'middle' : arguments[4];

        if (this.labelDirty === true) {
          this.size.width = this._processLabel(ctx, selected);
        }
        this.size.height = this.fontOptions.size * this.lineCount;
        this.size.left = x - this.size.width * 0.5;
        this.size.top = y - this.size.height * 0.5;
        this.size.yLine = y + (1 - this.lineCount) * 0.5 * this.fontOptions.size;
        if (baseline === "hanging") {
          this.size.top += 0.5 * this.fontOptions.size;
          this.size.top += 4; // distance from node, required because we use hanging. Hanging has less difference between browsers
          this.size.yLine += 4; // distance from node
        }

        this.labelDirty = false;
      }

      /**
       * This calculates the width as well as explodes the label string and calculates the amount of lines.
       * @param ctx
       * @param selected
       * @returns {number}
       * @private
       */
    }, {
      key: '_processLabel',
      value: function _processLabel(ctx, selected) {
        var width = 0;
        var lines = [''];
        var lineCount = 0;
        if (this.nodeOptions.label !== undefined) {
          lines = String(this.nodeOptions.label).split('\n');
          lineCount = lines.length;
          ctx.font = (selected && this.nodeOptions.labelHighlightBold ? 'bold ' : '') + this.fontOptions.size + "px " + this.fontOptions.face;
          width = ctx.measureText(lines[0]).width;
          for (var i = 1; i < lineCount; i++) {
            var lineWidth = ctx.measureText(lines[i]).width;
            width = lineWidth > width ? lineWidth : width;
          }
        }
        this.lines = lines;
        this.lineCount = lineCount;

        return width;
      }
    }], [{
      key: 'parseOptions',
      value: function parseOptions(parentOptions, newOptions) {
        var allowDeletion = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

        if (typeof newOptions.font === 'string') {
          var newOptionsArray = newOptions.font.split(" ");
          parentOptions.size = newOptionsArray[0].replace("px", '');
          parentOptions.face = newOptionsArray[1];
          parentOptions.color = newOptionsArray[2];
        } else if (typeof newOptions.font === 'object') {
          util.fillIfDefined(parentOptions, newOptions.font, allowDeletion);
        }
        parentOptions.size = Number(parentOptions.size);
      }
    }]);

    return Label;
  })();

  exports['default'] = Label;
  module.exports = exports['default'];

/***/ },
/* 63 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var Box = (function (_NodeBase) {
    _inherits(Box, _NodeBase);

    function Box(options, body, labelModule) {
      _classCallCheck(this, Box);

      _get(Object.getPrototypeOf(Box.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Box, [{
      key: 'resize',
      value: function resize(ctx, selected) {
        if (this.width === undefined) {
          var margin = 5;
          var textSize = this.labelModule.getTextSize(ctx, selected);
          this.width = textSize.width + 2 * margin;
          this.height = textSize.height + 2 * margin;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize(ctx, selected);
        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        var borderWidth = this.options.borderWidth;
        var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;

        ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;
        ctx.lineWidth = selected ? selectionLineWidth : borderWidth;
        ctx.lineWidth /= this.body.view.scale;
        ctx.lineWidth = Math.min(this.width, ctx.lineWidth);

        ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;

        var borderRadius = this.options.shapeProperties.borderRadius; // only effective for box
        ctx.roundRect(this.left, this.top, this.width, this.height, borderRadius);

        // draw shadow if enabled
        this.enableShadow(ctx);
        // draw the background
        ctx.fill();
        // disable shadows for other elements.
        this.disableShadow(ctx);

        //draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
        ctx.save();
        // if borders are zero width, they will be drawn with width 1 by default. This prevents that
        if (borderWidth > 0) {
          this.enableBorderDashes(ctx);
          //draw the border
          ctx.stroke();
          //disable dashed border for other elements
          this.disableBorderDashes(ctx);
        }
        ctx.restore();

        this.updateBoundingBox(x, y, ctx, selected);
        this.labelModule.draw(ctx, x, y, selected);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y, ctx, selected) {
        this.resize(ctx, selected);
        this.left = x - this.width * 0.5;
        this.top = y - this.height * 0.5;

        var borderRadius = this.options.shapeProperties.borderRadius; // only effective for box
        this.boundingBox.left = this.left - borderRadius;
        this.boundingBox.top = this.top - borderRadius;
        this.boundingBox.bottom = this.top + this.height + borderRadius;
        this.boundingBox.right = this.left + this.width + borderRadius;
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        this.resize(ctx);
        var borderWidth = this.options.borderWidth;

        return Math.min(Math.abs(this.width / 2 / Math.cos(angle)), Math.abs(this.height / 2 / Math.sin(angle))) + borderWidth;
      }
    }]);

    return Box;
  })(_utilNodeBase2['default']);

  exports['default'] = Box;
  module.exports = exports['default'];

/***/ },
/* 64 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var NodeBase = (function () {
    function NodeBase(options, body, labelModule) {
      _classCallCheck(this, NodeBase);

      this.body = body;
      this.labelModule = labelModule;
      this.setOptions(options);
      this.top = undefined;
      this.left = undefined;
      this.height = undefined;
      this.width = undefined;
      this.radius = undefined;
      this.boundingBox = { top: 0, left: 0, right: 0, bottom: 0 };
    }

    _createClass(NodeBase, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
      }
    }, {
      key: "_distanceToBorder",
      value: function _distanceToBorder(ctx, angle) {
        var borderWidth = this.options.borderWidth;
        this.resize(ctx);
        return Math.min(Math.abs(this.width / 2 / Math.cos(angle)), Math.abs(this.height / 2 / Math.sin(angle))) + borderWidth;
      }
    }, {
      key: "enableShadow",
      value: function enableShadow(ctx) {
        if (this.options.shadow.enabled === true) {
          ctx.shadowColor = this.options.shadow.color;
          ctx.shadowBlur = this.options.shadow.size;
          ctx.shadowOffsetX = this.options.shadow.x;
          ctx.shadowOffsetY = this.options.shadow.y;
        }
      }
    }, {
      key: "disableShadow",
      value: function disableShadow(ctx) {
        if (this.options.shadow.enabled === true) {
          ctx.shadowColor = 'rgba(0,0,0,0)';
          ctx.shadowBlur = 0;
          ctx.shadowOffsetX = 0;
          ctx.shadowOffsetY = 0;
        }
      }
    }, {
      key: "enableBorderDashes",
      value: function enableBorderDashes(ctx) {
        if (this.options.shapeProperties.borderDashes !== false) {
          if (ctx.setLineDash !== undefined) {
            var dashes = this.options.shapeProperties.borderDashes;
            if (dashes === true) {
              dashes = [5, 15];
            }
            ctx.setLineDash(dashes);
          } else {
            console.warn("setLineDash is not supported in this browser. The dashed borders cannot be used.");
            this.options.shapeProperties.borderDashes = false;
          }
        }
      }
    }, {
      key: "disableBorderDashes",
      value: function disableBorderDashes(ctx) {
        if (this.options.shapeProperties.borderDashes !== false) {
          if (ctx.setLineDash !== undefined) {
            ctx.setLineDash([0]);
          } else {
            console.warn("setLineDash is not supported in this browser. The dashed borders cannot be used.");
            this.options.shapeProperties.borderDashes = false;
          }
        }
      }
    }]);

    return NodeBase;
  })();

  exports["default"] = NodeBase;
  module.exports = exports["default"];

/***/ },
/* 65 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilCircleImageBase = __webpack_require__(66);

  var _utilCircleImageBase2 = _interopRequireDefault(_utilCircleImageBase);

  var Circle = (function (_CircleImageBase) {
    _inherits(Circle, _CircleImageBase);

    function Circle(options, body, labelModule) {
      _classCallCheck(this, Circle);

      _get(Object.getPrototypeOf(Circle.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Circle, [{
      key: 'resize',
      value: function resize(ctx, selected) {
        if (this.width === undefined) {
          var margin = 5;
          var textSize = this.labelModule.getTextSize(ctx, selected);
          var diameter = Math.max(textSize.width, textSize.height) + 2 * margin;
          this.options.size = diameter / 2;

          this.width = diameter;
          this.height = diameter;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize(ctx, selected);
        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        this._drawRawCircle(ctx, x, y, selected, hover, this.options.size);

        this.boundingBox.top = y - this.options.size;
        this.boundingBox.left = x - this.options.size;
        this.boundingBox.right = x + this.options.size;
        this.boundingBox.bottom = y + this.options.size;

        this.updateBoundingBox(x, y);
        this.labelModule.draw(ctx, x, y, selected);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y) {
        this.boundingBox.top = y - this.options.size;
        this.boundingBox.left = x - this.options.size;
        this.boundingBox.right = x + this.options.size;
        this.boundingBox.bottom = y + this.options.size;
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        this.resize(ctx);
        return this.width * 0.5;
      }
    }]);

    return Circle;
  })(_utilCircleImageBase2['default']);

  exports['default'] = Circle;
  module.exports = exports['default'];

/***/ },
/* 66 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var CircleImageBase = (function (_NodeBase) {
    _inherits(CircleImageBase, _NodeBase);

    function CircleImageBase(options, body, labelModule) {
      _classCallCheck(this, CircleImageBase);

      _get(Object.getPrototypeOf(CircleImageBase.prototype), 'constructor', this).call(this, options, body, labelModule);
      this.labelOffset = 0;
      this.imageLoaded = false;
    }

    _createClass(CircleImageBase, [{
      key: 'setOptions',
      value: function setOptions(options, imageObj) {
        this.options = options;
        if (imageObj) {
          this.imageObj = imageObj;
        }
      }

      /**
       * This function resizes the image by the options size when the image has not yet loaded. If the image has loaded, we
       * force the update of the size again.
       *
       * @private
       */
    }, {
      key: '_resizeImage',
      value: function _resizeImage() {
        var force = false;
        if (!this.imageObj.width || !this.imageObj.height) {
          // undefined or 0
          this.imageLoaded = false;
        } else if (this.imageLoaded === false) {
          this.imageLoaded = true;
          force = true;
        }

        if (!this.width || !this.height || force === true) {
          // undefined or 0
          var width, height, ratio;
          if (this.imageObj.width && this.imageObj.height) {
            // not undefined or 0
            width = 0;
            height = 0;
          }
          if (this.options.shapeProperties.useImageSize === false) {
            if (this.imageObj.width > this.imageObj.height) {
              ratio = this.imageObj.width / this.imageObj.height;
              width = this.options.size * 2 * ratio || this.imageObj.width;
              height = this.options.size * 2 || this.imageObj.height;
            } else {
              if (this.imageObj.width && this.imageObj.height) {
                // not undefined or 0
                ratio = this.imageObj.height / this.imageObj.width;
              } else {
                ratio = 1;
              }
              width = this.options.size * 2;
              height = this.options.size * 2 * ratio;
            }
          } else {
            // when not using the size property, we use the image size
            width = this.imageObj.width;
            height = this.imageObj.height;
          }
          this.width = width;
          this.height = height;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: '_drawRawCircle',
      value: function _drawRawCircle(ctx, x, y, selected, hover, size) {
        var neutralborderWidth = this.options.borderWidth;
        var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
        var borderWidth = (selected ? selectionLineWidth : neutralborderWidth) / this.body.view.scale;
        ctx.lineWidth = Math.min(this.width, borderWidth);

        ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;
        ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
        ctx.circle(x, y, size);

        // draw shadow if enabled
        this.enableShadow(ctx);
        // draw the background
        ctx.fill();
        // disable shadows for other elements.
        this.disableShadow(ctx);

        //draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
        ctx.save();
        // if borders are zero width, they will be drawn with width 1 by default. This prevents that
        if (borderWidth > 0) {
          this.enableBorderDashes(ctx);
          //draw the border
          ctx.stroke();
          //disable dashed border for other elements
          this.disableBorderDashes(ctx);
        }
        ctx.restore();
      }
    }, {
      key: '_drawImageAtPosition',
      value: function _drawImageAtPosition(ctx) {
        if (this.imageObj.width != 0) {
          // draw the image
          ctx.globalAlpha = 1.0;

          // draw shadow if enabled
          this.enableShadow(ctx);

          // draw image
          ctx.drawImage(this.imageObj, this.left, this.top, this.width, this.height);

          // disable shadows for other elements.
          this.disableShadow(ctx);
        }
      }
    }, {
      key: '_drawImageLabel',
      value: function _drawImageLabel(ctx, x, y, selected) {
        var yLabel;
        var offset = 0;

        if (this.height !== undefined) {
          offset = this.height * 0.5;
          var labelDimensions = this.labelModule.getTextSize(ctx);
          if (labelDimensions.lineCount >= 1) {
            offset += labelDimensions.height / 2;
          }
        }

        yLabel = y + offset;

        if (this.options.label) {
          this.labelOffset = offset;
        }
        this.labelModule.draw(ctx, x, yLabel, selected, 'hanging');
      }
    }]);

    return CircleImageBase;
  })(_utilNodeBase2['default']);

  exports['default'] = CircleImageBase;
  module.exports = exports['default'];

/***/ },
/* 67 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilCircleImageBase = __webpack_require__(66);

  var _utilCircleImageBase2 = _interopRequireDefault(_utilCircleImageBase);

  var CircularImage = (function (_CircleImageBase) {
    _inherits(CircularImage, _CircleImageBase);

    function CircularImage(options, body, labelModule, imageObj) {
      _classCallCheck(this, CircularImage);

      _get(Object.getPrototypeOf(CircularImage.prototype), 'constructor', this).call(this, options, body, labelModule);
      this.imageObj = imageObj;
      this._swapToImageResizeWhenImageLoaded = true;
    }

    _createClass(CircularImage, [{
      key: 'resize',
      value: function resize() {
        if (this.imageObj.src === undefined || this.imageObj.width === undefined || this.imageObj.height === undefined) {
          if (!this.width) {
            var diameter = this.options.size * 2;
            this.width = diameter;
            this.height = diameter;
            this._swapToImageResizeWhenImageLoaded = true;
            this.radius = 0.5 * this.width;
          }
        } else {
          if (this._swapToImageResizeWhenImageLoaded) {
            this.width = undefined;
            this.height = undefined;
            this._swapToImageResizeWhenImageLoaded = false;
          }
          this._resizeImage();
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize();

        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        var size = Math.min(0.5 * this.height, 0.5 * this.width);

        // draw the background circle. IMPORTANT: the stroke in this method is used by the clip method below.
        this._drawRawCircle(ctx, x, y, selected, hover, size);

        // now we draw in the circle, we save so we can revert the clip operation after drawing.
        ctx.save();
        // clip is used to use the stroke in drawRawCircle as an area that we can draw in.
        ctx.clip();
        // draw the image
        this._drawImageAtPosition(ctx);
        // restore so we can again draw on the full canvas
        ctx.restore();

        this._drawImageLabel(ctx, x, y, selected);

        this.updateBoundingBox(x, y);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y) {
        this.boundingBox.top = y - this.options.size;
        this.boundingBox.left = x - this.options.size;
        this.boundingBox.right = x + this.options.size;
        this.boundingBox.bottom = y + this.options.size;
        this.boundingBox.left = Math.min(this.boundingBox.left, this.labelModule.size.left);
        this.boundingBox.right = Math.max(this.boundingBox.right, this.labelModule.size.left + this.labelModule.size.width);
        this.boundingBox.bottom = Math.max(this.boundingBox.bottom, this.boundingBox.bottom + this.labelOffset);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        this.resize(ctx);
        return this.width * 0.5;
      }
    }]);

    return CircularImage;
  })(_utilCircleImageBase2['default']);

  exports['default'] = CircularImage;
  module.exports = exports['default'];

/***/ },
/* 68 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var Database = (function (_NodeBase) {
    _inherits(Database, _NodeBase);

    function Database(options, body, labelModule) {
      _classCallCheck(this, Database);

      _get(Object.getPrototypeOf(Database.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Database, [{
      key: 'resize',
      value: function resize(ctx, selected) {
        if (this.width === undefined) {
          var margin = 5;
          var textSize = this.labelModule.getTextSize(ctx, selected);
          var size = textSize.width + 2 * margin;
          this.width = size;
          this.height = size;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize(ctx, selected);
        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        var neutralborderWidth = this.options.borderWidth;
        var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
        var borderWidth = (selected ? selectionLineWidth : neutralborderWidth) / this.body.view.scale;
        ctx.lineWidth = Math.min(this.width, borderWidth);

        ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;

        ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
        ctx.database(x - this.width / 2, y - this.height * 0.5, this.width, this.height);

        // draw shadow if enabled
        this.enableShadow(ctx);
        // draw the background
        ctx.fill();
        // disable shadows for other elements.
        this.disableShadow(ctx);

        //draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
        ctx.save();
        // if borders are zero width, they will be drawn with width 1 by default. This prevents that
        if (borderWidth > 0) {
          this.enableBorderDashes(ctx);
          //draw the border
          ctx.stroke();
          //disable dashed border for other elements
          this.disableBorderDashes(ctx);
        }
        ctx.restore();

        this.updateBoundingBox(x, y, ctx, selected);
        this.labelModule.draw(ctx, x, y, selected);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y, ctx, selected) {
        this.resize(ctx, selected);

        this.left = x - this.width * 0.5;
        this.top = y - this.height * 0.5;

        this.boundingBox.left = this.left;
        this.boundingBox.top = this.top;
        this.boundingBox.bottom = this.top + this.height;
        this.boundingBox.right = this.left + this.width;
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Database;
  })(_utilNodeBase2['default']);

  exports['default'] = Database;
  module.exports = exports['default'];

/***/ },
/* 69 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilShapeBase = __webpack_require__(70);

  var _utilShapeBase2 = _interopRequireDefault(_utilShapeBase);

  var Diamond = (function (_ShapeBase) {
    _inherits(Diamond, _ShapeBase);

    function Diamond(options, body, labelModule) {
      _classCallCheck(this, Diamond);

      _get(Object.getPrototypeOf(Diamond.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Diamond, [{
      key: 'resize',
      value: function resize(ctx) {
        this._resizeShape();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this._drawShape(ctx, 'diamond', 4, x, y, selected, hover);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Diamond;
  })(_utilShapeBase2['default']);

  exports['default'] = Diamond;
  module.exports = exports['default'];

/***/ },
/* 70 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var ShapeBase = (function (_NodeBase) {
    _inherits(ShapeBase, _NodeBase);

    function ShapeBase(options, body, labelModule) {
      _classCallCheck(this, ShapeBase);

      _get(Object.getPrototypeOf(ShapeBase.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(ShapeBase, [{
      key: '_resizeShape',
      value: function _resizeShape() {
        if (this.width === undefined) {
          var size = 2 * this.options.size;
          this.width = size;
          this.height = size;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: '_drawShape',
      value: function _drawShape(ctx, shape, sizeMultiplier, x, y, selected, hover) {
        this._resizeShape();

        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        var neutralborderWidth = this.options.borderWidth;
        var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
        var borderWidth = (selected ? selectionLineWidth : neutralborderWidth) / this.body.view.scale;
        ctx.lineWidth = Math.min(this.width, borderWidth);

        ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;
        ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
        ctx[shape](x, y, this.options.size);

        // draw shadow if enabled
        this.enableShadow(ctx);
        // draw the background
        ctx.fill();
        // disable shadows for other elements.
        this.disableShadow(ctx);

        //draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
        ctx.save();
        // if borders are zero width, they will be drawn with width 1 by default. This prevents that
        if (borderWidth > 0) {
          this.enableBorderDashes(ctx);
          //draw the border
          ctx.stroke();
          //disable dashed border for other elements
          this.disableBorderDashes(ctx);
        }
        ctx.restore();

        if (this.options.label !== undefined) {
          var yLabel = y + 0.5 * this.height + 3; // the + 3 is to offset it a bit below the node.
          this.labelModule.draw(ctx, x, yLabel, selected, 'hanging');
        }

        this.updateBoundingBox(x, y);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y) {
        this.boundingBox.top = y - this.options.size;
        this.boundingBox.left = x - this.options.size;
        this.boundingBox.right = x + this.options.size;
        this.boundingBox.bottom = y + this.options.size;

        if (this.options.label !== undefined && this.labelModule.size.width > 0) {
          this.boundingBox.left = Math.min(this.boundingBox.left, this.labelModule.size.left);
          this.boundingBox.right = Math.max(this.boundingBox.right, this.labelModule.size.left + this.labelModule.size.width);
          this.boundingBox.bottom = Math.max(this.boundingBox.bottom, this.boundingBox.bottom + this.labelModule.size.height + 3);
        }
      }
    }]);

    return ShapeBase;
  })(_utilNodeBase2['default']);

  exports['default'] = ShapeBase;
  module.exports = exports['default'];

/***/ },
/* 71 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilShapeBase = __webpack_require__(70);

  var _utilShapeBase2 = _interopRequireDefault(_utilShapeBase);

  var Dot = (function (_ShapeBase) {
    _inherits(Dot, _ShapeBase);

    function Dot(options, body, labelModule) {
      _classCallCheck(this, Dot);

      _get(Object.getPrototypeOf(Dot.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Dot, [{
      key: 'resize',
      value: function resize(ctx) {
        this._resizeShape();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this._drawShape(ctx, 'circle', 2, x, y, selected, hover);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        this.resize(ctx);
        return this.options.size;
      }
    }]);

    return Dot;
  })(_utilShapeBase2['default']);

  exports['default'] = Dot;
  module.exports = exports['default'];

/***/ },
/* 72 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var Ellipse = (function (_NodeBase) {
    _inherits(Ellipse, _NodeBase);

    function Ellipse(options, body, labelModule) {
      _classCallCheck(this, Ellipse);

      _get(Object.getPrototypeOf(Ellipse.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Ellipse, [{
      key: 'resize',
      value: function resize(ctx, selected) {
        if (this.width === undefined) {
          var textSize = this.labelModule.getTextSize(ctx, selected);

          this.width = textSize.width * 1.5;
          this.height = textSize.height * 2;
          if (this.width < this.height) {
            this.width = this.height;
          }
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize(ctx, selected);
        this.left = x - this.width * 0.5;
        this.top = y - this.height * 0.5;

        var neutralborderWidth = this.options.borderWidth;
        var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
        var borderWidth = (selected ? selectionLineWidth : neutralborderWidth) / this.body.view.scale;
        ctx.lineWidth = Math.min(this.width, borderWidth);

        ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;

        ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
        ctx.ellipse(this.left, this.top, this.width, this.height);

        // draw shadow if enabled
        this.enableShadow(ctx);
        // draw the background
        ctx.fill();
        // disable shadows for other elements.
        this.disableShadow(ctx);

        //draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
        ctx.save();

        // if borders are zero width, they will be drawn with width 1 by default. This prevents that
        if (borderWidth > 0) {
          this.enableBorderDashes(ctx);
          //draw the border
          ctx.stroke();
          //disable dashed border for other elements
          this.disableBorderDashes(ctx);
        }

        ctx.restore();

        this.updateBoundingBox(x, y, ctx, selected);
        this.labelModule.draw(ctx, x, y, selected);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y, ctx, selected) {
        this.resize(ctx, selected); // just in case

        this.left = x - this.width * 0.5;
        this.top = y - this.height * 0.5;

        this.boundingBox.left = this.left;
        this.boundingBox.top = this.top;
        this.boundingBox.bottom = this.top + this.height;
        this.boundingBox.right = this.left + this.width;
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        this.resize(ctx);
        var a = this.width * 0.5;
        var b = this.height * 0.5;
        var w = Math.sin(angle) * a;
        var h = Math.cos(angle) * b;
        return a * b / Math.sqrt(w * w + h * h);
      }
    }]);

    return Ellipse;
  })(_utilNodeBase2['default']);

  exports['default'] = Ellipse;
  module.exports = exports['default'];

/***/ },
/* 73 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var Icon = (function (_NodeBase) {
    _inherits(Icon, _NodeBase);

    function Icon(options, body, labelModule) {
      _classCallCheck(this, Icon);

      _get(Object.getPrototypeOf(Icon.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Icon, [{
      key: 'resize',
      value: function resize(ctx) {
        if (this.width === undefined) {
          var margin = 5;
          var iconSize = {
            width: Number(this.options.icon.size),
            height: Number(this.options.icon.size)
          };
          this.width = iconSize.width + 2 * margin;
          this.height = iconSize.height + 2 * margin;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize(ctx);
        this.options.icon.size = this.options.icon.size || 50;

        this.left = x - this.width * 0.5;
        this.top = y - this.height * 0.5;
        this._icon(ctx, x, y, selected);

        if (this.options.label !== undefined) {
          var iconTextSpacing = 5;
          this.labelModule.draw(ctx, x, y + this.height * 0.5 + iconTextSpacing, selected);
        }

        this.updateBoundingBox(x, y);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y) {
        this.boundingBox.top = y - this.options.icon.size * 0.5;
        this.boundingBox.left = x - this.options.icon.size * 0.5;
        this.boundingBox.right = x + this.options.icon.size * 0.5;
        this.boundingBox.bottom = y + this.options.icon.size * 0.5;

        if (this.options.label !== undefined && this.labelModule.size.width > 0) {
          var iconTextSpacing = 5;
          this.boundingBox.left = Math.min(this.boundingBox.left, this.labelModule.size.left);
          this.boundingBox.right = Math.max(this.boundingBox.right, this.labelModule.size.left + this.labelModule.size.width);
          this.boundingBox.bottom = Math.max(this.boundingBox.bottom, this.boundingBox.bottom + this.labelModule.size.height + iconTextSpacing);
        }
      }
    }, {
      key: '_icon',
      value: function _icon(ctx, x, y, selected) {
        var iconSize = Number(this.options.icon.size);

        if (this.options.icon.code !== undefined) {
          ctx.font = (selected ? "bold " : "") + iconSize + "px " + this.options.icon.face;

          // draw icon
          ctx.fillStyle = this.options.icon.color || "black";
          ctx.textAlign = "center";
          ctx.textBaseline = "middle";

          // draw shadow if enabled
          this.enableShadow(ctx);
          ctx.fillText(this.options.icon.code, x, y);

          // disable shadows for other elements.
          this.disableShadow(ctx);
        } else {
          console.error('When using the icon shape, you need to define the code in the icon options object. This can be done per node or globally.');
        }
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Icon;
  })(_utilNodeBase2['default']);

  exports['default'] = Icon;
  module.exports = exports['default'];

/***/ },
/* 74 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilCircleImageBase = __webpack_require__(66);

  var _utilCircleImageBase2 = _interopRequireDefault(_utilCircleImageBase);

  var Image = (function (_CircleImageBase) {
    _inherits(Image, _CircleImageBase);

    function Image(options, body, labelModule, imageObj) {
      _classCallCheck(this, Image);

      _get(Object.getPrototypeOf(Image.prototype), 'constructor', this).call(this, options, body, labelModule);
      this.imageObj = imageObj;
    }

    _createClass(Image, [{
      key: 'resize',
      value: function resize() {
        this._resizeImage();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize();
        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        if (this.options.shapeProperties.useBorderWithImage === true) {
          var neutralborderWidth = this.options.borderWidth;
          var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
          var borderWidth = (selected ? selectionLineWidth : neutralborderWidth) / this.body.view.scale;
          ctx.lineWidth = Math.min(this.width, borderWidth);

          ctx.beginPath();

          // setup the line properties.
          ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;

          // set a fillstyle
          ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;

          // draw a rectangle to form the border around. This rectangle is filled so the opacity of a picture (in future vis releases?) can be used to tint the image
          ctx.rect(this.left - 0.5 * ctx.lineWidth, this.top - 0.5 * ctx.lineWidth, this.width + ctx.lineWidth, this.height + ctx.lineWidth);
          ctx.fill();

          //draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
          ctx.save();
          // if borders are zero width, they will be drawn with width 1 by default. This prevents that
          if (borderWidth > 0) {
            this.enableBorderDashes(ctx);
            //draw the border
            ctx.stroke();
            //disable dashed border for other elements
            this.disableBorderDashes(ctx);
          }
          ctx.restore();

          ctx.closePath();
        }

        this._drawImageAtPosition(ctx);

        this._drawImageLabel(ctx, x, y, selected || hover);

        this.updateBoundingBox(x, y);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y) {
        this.resize();
        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        this.boundingBox.top = this.top;
        this.boundingBox.left = this.left;
        this.boundingBox.right = this.left + this.width;
        this.boundingBox.bottom = this.top + this.height;

        if (this.options.label !== undefined && this.labelModule.size.width > 0) {
          this.boundingBox.left = Math.min(this.boundingBox.left, this.labelModule.size.left);
          this.boundingBox.right = Math.max(this.boundingBox.right, this.labelModule.size.left + this.labelModule.size.width);
          this.boundingBox.bottom = Math.max(this.boundingBox.bottom, this.boundingBox.bottom + this.labelOffset);
        }
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Image;
  })(_utilCircleImageBase2['default']);

  exports['default'] = Image;
  module.exports = exports['default'];

/***/ },
/* 75 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilShapeBase = __webpack_require__(70);

  var _utilShapeBase2 = _interopRequireDefault(_utilShapeBase);

  var Square = (function (_ShapeBase) {
    _inherits(Square, _ShapeBase);

    function Square(options, body, labelModule) {
      _classCallCheck(this, Square);

      _get(Object.getPrototypeOf(Square.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Square, [{
      key: 'resize',
      value: function resize() {
        this._resizeShape();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this._drawShape(ctx, 'square', 2, x, y, selected, hover);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Square;
  })(_utilShapeBase2['default']);

  exports['default'] = Square;
  module.exports = exports['default'];

/***/ },
/* 76 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilShapeBase = __webpack_require__(70);

  var _utilShapeBase2 = _interopRequireDefault(_utilShapeBase);

  var Star = (function (_ShapeBase) {
    _inherits(Star, _ShapeBase);

    function Star(options, body, labelModule) {
      _classCallCheck(this, Star);

      _get(Object.getPrototypeOf(Star.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Star, [{
      key: 'resize',
      value: function resize(ctx) {
        this._resizeShape();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this._drawShape(ctx, 'star', 4, x, y, selected, hover);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Star;
  })(_utilShapeBase2['default']);

  exports['default'] = Star;
  module.exports = exports['default'];

/***/ },
/* 77 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilNodeBase = __webpack_require__(64);

  var _utilNodeBase2 = _interopRequireDefault(_utilNodeBase);

  var Text = (function (_NodeBase) {
    _inherits(Text, _NodeBase);

    function Text(options, body, labelModule) {
      _classCallCheck(this, Text);

      _get(Object.getPrototypeOf(Text.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Text, [{
      key: 'resize',
      value: function resize(ctx, selected) {
        if (this.width === undefined) {
          var margin = 5;
          var textSize = this.labelModule.getTextSize(ctx, selected);
          this.width = textSize.width + 2 * margin;
          this.height = textSize.height + 2 * margin;
          this.radius = 0.5 * this.width;
        }
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this.resize(ctx, selected || hover);
        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        // draw shadow if enabled
        this.enableShadow(ctx);
        this.labelModule.draw(ctx, x, y, selected || hover);

        // disable shadows for other elements.
        this.disableShadow(ctx);

        this.updateBoundingBox(x, y, ctx, selected);
      }
    }, {
      key: 'updateBoundingBox',
      value: function updateBoundingBox(x, y, ctx, selected) {
        this.resize(ctx, selected);

        this.left = x - this.width / 2;
        this.top = y - this.height / 2;

        this.boundingBox.top = this.top;
        this.boundingBox.left = this.left;
        this.boundingBox.right = this.left + this.width;
        this.boundingBox.bottom = this.top + this.height;
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Text;
  })(_utilNodeBase2['default']);

  exports['default'] = Text;
  module.exports = exports['default'];

/***/ },
/* 78 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilShapeBase = __webpack_require__(70);

  var _utilShapeBase2 = _interopRequireDefault(_utilShapeBase);

  var Triangle = (function (_ShapeBase) {
    _inherits(Triangle, _ShapeBase);

    function Triangle(options, body, labelModule) {
      _classCallCheck(this, Triangle);

      _get(Object.getPrototypeOf(Triangle.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(Triangle, [{
      key: 'resize',
      value: function resize(ctx) {
        this._resizeShape();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this._drawShape(ctx, 'triangle', 3, x, y, selected, hover);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return Triangle;
  })(_utilShapeBase2['default']);

  exports['default'] = Triangle;
  module.exports = exports['default'];

/***/ },
/* 79 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilShapeBase = __webpack_require__(70);

  var _utilShapeBase2 = _interopRequireDefault(_utilShapeBase);

  var TriangleDown = (function (_ShapeBase) {
    _inherits(TriangleDown, _ShapeBase);

    function TriangleDown(options, body, labelModule) {
      _classCallCheck(this, TriangleDown);

      _get(Object.getPrototypeOf(TriangleDown.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    _createClass(TriangleDown, [{
      key: 'resize',
      value: function resize(ctx) {
        this._resizeShape();
      }
    }, {
      key: 'draw',
      value: function draw(ctx, x, y, selected, hover) {
        this._drawShape(ctx, 'triangleDown', 3, x, y, selected, hover);
      }
    }, {
      key: 'distanceToBorder',
      value: function distanceToBorder(ctx, angle) {
        return this._distanceToBorder(ctx, angle);
      }
    }]);

    return TriangleDown;
  })(_utilShapeBase2['default']);

  exports['default'] = TriangleDown;
  module.exports = exports['default'];

/***/ },
/* 80 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _componentsEdge = __webpack_require__(81);

  var _componentsEdge2 = _interopRequireDefault(_componentsEdge);

  var _componentsSharedLabel = __webpack_require__(62);

  var _componentsSharedLabel2 = _interopRequireDefault(_componentsSharedLabel);

  var util = __webpack_require__(1);
  var DataSet = __webpack_require__(8);
  var DataView = __webpack_require__(10);

  var EdgesHandler = (function () {
    function EdgesHandler(body, images, groups) {
      var _this = this;

      _classCallCheck(this, EdgesHandler);

      this.body = body;
      this.images = images;
      this.groups = groups;

      // create the edge API in the body container
      this.body.functions.createEdge = this.create.bind(this);

      this.edgesListeners = {
        add: function add(event, params) {
          _this.add(params.items);
        },
        update: function update(event, params) {
          _this.update(params.items);
        },
        remove: function remove(event, params) {
          _this.remove(params.items);
        }
      };

      this.options = {};
      this.defaultOptions = {
        arrows: {
          to: { enabled: false, scaleFactor: 1 }, // boolean / {arrowScaleFactor:1} / {enabled: false, arrowScaleFactor:1}
          middle: { enabled: false, scaleFactor: 1 },
          from: { enabled: false, scaleFactor: 1 }
        },
        arrowStrikethrough: true,
        color: {
          color: '#848484',
          highlight: '#848484',
          hover: '#848484',
          inherit: 'from',
          opacity: 1.0
        },
        dashes: false,
        font: {
          color: '#343434',
          size: 14, // px
          face: 'arial',
          background: 'none',
          strokeWidth: 2, // px
          strokeColor: '#ffffff',
          align: 'horizontal'
        },
        hidden: false,
        hoverWidth: 1.5,
        label: undefined,
        labelHighlightBold: true,
        length: undefined,
        physics: true,
        scaling: {
          min: 1,
          max: 15,
          label: {
            enabled: true,
            min: 14,
            max: 30,
            maxVisible: 30,
            drawThreshold: 5
          },
          customScalingFunction: function customScalingFunction(min, max, total, value) {
            if (max === min) {
              return 0.5;
            } else {
              var scale = 1 / (max - min);
              return Math.max(0, (value - min) * scale);
            }
          }
        },
        selectionWidth: 1.5,
        selfReferenceSize: 20,
        shadow: {
          enabled: false,
          color: 'rgba(0,0,0,0.5)',
          size: 10,
          x: 5,
          y: 5
        },
        smooth: {
          enabled: true,
          type: "dynamic",
          forceDirection: 'none',
          roundness: 0.5
        },
        title: undefined,
        width: 1,
        value: undefined
      };

      util.extend(this.options, this.defaultOptions);

      this.bindEventListeners();
    }

    _createClass(EdgesHandler, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this2 = this;

        // this allows external modules to force all dynamic curves to turn static.
        this.body.emitter.on("_forceDisableDynamicCurves", function (type) {
          if (type === 'dynamic') {
            type = 'continuous';
          }
          var emitChange = false;
          for (var edgeId in _this2.body.edges) {
            if (_this2.body.edges.hasOwnProperty(edgeId)) {
              var edge = _this2.body.edges[edgeId];
              var edgeData = _this2.body.data.edges._data[edgeId];

              // only forcibly remove the smooth curve if the data has been set of the edge has the smooth curves defined.
              // this is because a change in the global would not affect these curves.
              if (edgeData !== undefined) {
                var edgeOptions = edgeData.smooth;
                if (edgeOptions !== undefined) {
                  if (edgeOptions.enabled === true && edgeOptions.type === 'dynamic') {
                    if (type === undefined) {
                      edge.setOptions({ smooth: false });
                    } else {
                      edge.setOptions({ smooth: { type: type } });
                    }
                    emitChange = true;
                  }
                }
              }
            }
          }
          if (emitChange === true) {
            _this2.body.emitter.emit("_dataChanged");
          }
        });

        // this is called when options of EXISTING nodes or edges have changed.
        this.body.emitter.on("_dataUpdated", function () {
          _this2.reconnectEdges();
          _this2.markAllEdgesAsDirty();
        });

        // refresh the edges. Used when reverting from hierarchical layout
        this.body.emitter.on("refreshEdges", this.refresh.bind(this));
        this.body.emitter.on("refresh", this.refresh.bind(this));
        this.body.emitter.on("destroy", function () {
          util.forEach(_this2.edgesListeners, function (callback, event) {
            if (_this2.body.data.edges) _this2.body.data.edges.off(event, callback);
          });
          delete _this2.body.functions.createEdge;
          delete _this2.edgesListeners.add;
          delete _this2.edgesListeners.update;
          delete _this2.edgesListeners.remove;
          delete _this2.edgesListeners;
        });
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          // use the parser from the Edge class to fill in all shorthand notations
          _componentsEdge2['default'].parseOptions(this.options, options);

          // handle multiple input cases for color
          if (options.color !== undefined) {
            this.markAllEdgesAsDirty();
          }

          // update smooth settings in all edges
          var dataChanged = false;
          if (options.smooth !== undefined) {
            for (var edgeId in this.body.edges) {
              if (this.body.edges.hasOwnProperty(edgeId)) {
                dataChanged = this.body.edges[edgeId].updateEdgeType() || dataChanged;
              }
            }
          }

          // update fonts in all edges
          if (options.font !== undefined) {
            // use the parser from the Label class to fill in all shorthand notations
            _componentsSharedLabel2['default'].parseOptions(this.options.font, options);
            for (var edgeId in this.body.edges) {
              if (this.body.edges.hasOwnProperty(edgeId)) {
                this.body.edges[edgeId].updateLabelModule();
              }
            }
          }

          // update the state of the variables if needed
          if (options.hidden !== undefined || options.physics !== undefined || dataChanged === true) {
            this.body.emitter.emit('_dataChanged');
          }
        }
      }

      /**
       * Load edges by reading the data table
       * @param {Array | DataSet | DataView} edges    The data containing the edges.
       * @private
       * @private
       */
    }, {
      key: 'setData',
      value: function setData(edges) {
        var _this3 = this;

        var doNotEmit = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var oldEdgesData = this.body.data.edges;

        if (edges instanceof DataSet || edges instanceof DataView) {
          this.body.data.edges = edges;
        } else if (Array.isArray(edges)) {
          this.body.data.edges = new DataSet();
          this.body.data.edges.add(edges);
        } else if (!edges) {
          this.body.data.edges = new DataSet();
        } else {
          throw new TypeError('Array or DataSet expected');
        }

        // TODO: is this null or undefined or false?
        if (oldEdgesData) {
          // unsubscribe from old dataset
          util.forEach(this.edgesListeners, function (callback, event) {
            oldEdgesData.off(event, callback);
          });
        }

        // remove drawn edges
        this.body.edges = {};

        // TODO: is this null or undefined or false?
        if (this.body.data.edges) {
          // subscribe to new dataset
          util.forEach(this.edgesListeners, function (callback, event) {
            _this3.body.data.edges.on(event, callback);
          });

          // draw all new nodes
          var ids = this.body.data.edges.getIds();
          this.add(ids, true);
        }

        if (doNotEmit === false) {
          this.body.emitter.emit("_dataChanged");
        }
      }

      /**
       * Add edges
       * @param {Number[] | String[]} ids
       * @private
       */
    }, {
      key: 'add',
      value: function add(ids) {
        var doNotEmit = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var edges = this.body.edges;
        var edgesData = this.body.data.edges;

        for (var i = 0; i < ids.length; i++) {
          var id = ids[i];

          var oldEdge = edges[id];
          if (oldEdge) {
            oldEdge.disconnect();
          }

          var data = edgesData.get(id, { "showInternalIds": true });
          edges[id] = this.create(data);
        }

        if (doNotEmit === false) {
          this.body.emitter.emit("_dataChanged");
        }
      }

      /**
       * Update existing edges, or create them when not yet existing
       * @param {Number[] | String[]} ids
       * @private
       */
    }, {
      key: 'update',
      value: function update(ids) {
        var edges = this.body.edges;
        var edgesData = this.body.data.edges;
        var dataChanged = false;
        for (var i = 0; i < ids.length; i++) {
          var id = ids[i];
          var data = edgesData.get(id);
          var edge = edges[id];
          if (edge !== undefined) {
            // update edge
            edge.disconnect();
            dataChanged = edge.setOptions(data) || dataChanged; // if a support node is added, data can be changed.
            edge.connect();
          } else {
            // create edge
            this.body.edges[id] = this.create(data);
            dataChanged = true;
          }
        }

        if (dataChanged === true) {
          this.body.emitter.emit("_dataChanged");
        } else {
          this.body.emitter.emit("_dataUpdated");
        }
      }

      /**
       * Remove existing edges. Non existing ids will be ignored
       * @param {Number[] | String[]} ids
       * @private
       */
    }, {
      key: 'remove',
      value: function remove(ids) {
        var edges = this.body.edges;
        for (var i = 0; i < ids.length; i++) {
          var id = ids[i];
          var edge = edges[id];
          if (edge !== undefined) {
            edge.cleanup();
            edge.disconnect();
            delete edges[id];
          }
        }

        this.body.emitter.emit("_dataChanged");
      }
    }, {
      key: 'refresh',
      value: function refresh() {
        var edges = this.body.edges;
        for (var edgeId in edges) {
          var edge = undefined;
          if (edges.hasOwnProperty(edgeId)) {
            edge = edges[edgeId];
          }
          var data = this.body.data.edges._data[edgeId];
          if (edge !== undefined && data !== undefined) {
            edge.setOptions(data);
          }
        }
      }
    }, {
      key: 'create',
      value: function create(properties) {
        return new _componentsEdge2['default'](properties, this.body, this.options);
      }
    }, {
      key: 'markAllEdgesAsDirty',
      value: function markAllEdgesAsDirty() {
        for (var edgeId in this.body.edges) {
          this.body.edges[edgeId].edgeType.colorDirty = true;
        }
      }

      /**
       * Reconnect all edges
       * @private
       */
    }, {
      key: 'reconnectEdges',
      value: function reconnectEdges() {
        var id;
        var nodes = this.body.nodes;
        var edges = this.body.edges;

        for (id in nodes) {
          if (nodes.hasOwnProperty(id)) {
            nodes[id].edges = [];
          }
        }

        for (id in edges) {
          if (edges.hasOwnProperty(id)) {
            var edge = edges[id];
            edge.from = null;
            edge.to = null;
            edge.connect();
          }
        }
      }
    }, {
      key: 'getConnectedNodes',
      value: function getConnectedNodes(edgeId) {
        var nodeList = [];
        if (this.body.edges[edgeId] !== undefined) {
          var edge = this.body.edges[edgeId];
          if (edge.fromId) {
            nodeList.push(edge.fromId);
          }
          if (edge.toId) {
            nodeList.push(edge.toId);
          }
        }
        return nodeList;
      }
    }]);

    return EdgesHandler;
  })();

  exports['default'] = EdgesHandler;
  module.exports = exports['default'];

/***/ },
/* 81 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _sharedLabel = __webpack_require__(62);

  var _sharedLabel2 = _interopRequireDefault(_sharedLabel);

  var _edgesCubicBezierEdge = __webpack_require__(82);

  var _edgesCubicBezierEdge2 = _interopRequireDefault(_edgesCubicBezierEdge);

  var _edgesBezierEdgeDynamic = __webpack_require__(86);

  var _edgesBezierEdgeDynamic2 = _interopRequireDefault(_edgesBezierEdgeDynamic);

  var _edgesBezierEdgeStatic = __webpack_require__(87);

  var _edgesBezierEdgeStatic2 = _interopRequireDefault(_edgesBezierEdgeStatic);

  var _edgesStraightEdge = __webpack_require__(88);

  var _edgesStraightEdge2 = _interopRequireDefault(_edgesStraightEdge);

  /**
   * @class Edge
   *
   * A edge connects two nodes
   * @param {Object} properties     Object with options. Must contain
   *                                At least options from and to.
   *                                Available options: from (number),
   *                                to (number), label (string, color (string),
   *                                width (number), style (string),
   *                                length (number), title (string)
   * @param {Network} network       A Network object, used to find and edge to
   *                                nodes.
   * @param {Object} constants      An object with default values for
   *                                example for the color
   */
  var util = __webpack_require__(1);

  var Edge = (function () {
    function Edge(options, body, globalOptions) {
      _classCallCheck(this, Edge);

      if (body === undefined) {
        throw "No body provided";
      }
      this.options = util.bridgeObject(globalOptions);
      this.globalOptions = globalOptions;
      this.body = body;

      // initialize variables
      this.id = undefined;
      this.fromId = undefined;
      this.toId = undefined;
      this.selected = false;
      this.hover = false;
      this.labelDirty = true;
      this.colorDirty = true;

      this.baseWidth = this.options.width;
      this.baseFontSize = this.options.font.size;

      this.from = undefined; // a node
      this.to = undefined; // a node

      this.edgeType = undefined;

      this.connected = false;

      this.labelModule = new _sharedLabel2['default'](this.body, this.options);

      this.setOptions(options);
    }

    /**
     * Set or overwrite options for the edge
     * @param {Object} options  an object with options
     * @param doNotEmit
     */

    _createClass(Edge, [{
      key: 'setOptions',
      value: function setOptions(options) {
        if (!options) {
          return;
        }
        this.colorDirty = true;

        Edge.parseOptions(this.options, options, true, this.globalOptions);

        if (options.id !== undefined) {
          this.id = options.id;
        }
        if (options.from !== undefined) {
          this.fromId = options.from;
        }
        if (options.to !== undefined) {
          this.toId = options.to;
        }
        if (options.title !== undefined) {
          this.title = options.title;
        }
        if (options.value !== undefined) {
          options.value = parseFloat(options.value);
        }

        // update label Module
        this.updateLabelModule();

        var dataChanged = this.updateEdgeType();

        // if anything has been updates, reset the selection width and the hover width
        this._setInteractionWidths();

        // A node is connected when it has a from and to node that both exist in the network.body.nodes.
        this.connect();

        if (options.hidden !== undefined || options.physics !== undefined) {
          dataChanged = true;
        }

        return dataChanged;
      }
    }, {
      key: 'updateLabelModule',
      // set the object back to the global options

      /**
       * update the options in the label module
       */
      value: function updateLabelModule() {
        this.labelModule.setOptions(this.options, true);
        if (this.labelModule.baseSize !== undefined) {
          this.baseFontSize = this.labelModule.baseSize;
        }
      }

      /**
       * update the edge type, set the options
       * @returns {boolean}
       */
    }, {
      key: 'updateEdgeType',
      value: function updateEdgeType() {
        var dataChanged = false;
        var changeInType = true;
        var smooth = this.options.smooth;
        if (this.edgeType !== undefined) {
          if (this.edgeType instanceof _edgesBezierEdgeDynamic2['default'] && smooth.enabled === true && smooth.type === 'dynamic') {
            changeInType = false;
          }
          if (this.edgeType instanceof _edgesCubicBezierEdge2['default'] && smooth.enabled === true && smooth.type === 'cubicBezier') {
            changeInType = false;
          }
          if (this.edgeType instanceof _edgesBezierEdgeStatic2['default'] && smooth.enabled === true && smooth.type !== 'dynamic' && smooth.type !== 'cubicBezier') {
            changeInType = false;
          }
          if (this.edgeType instanceof _edgesStraightEdge2['default'] && smooth.enabled === false) {
            changeInType = false;
          }

          if (changeInType === true) {
            dataChanged = this.cleanup();
          }
        }

        if (changeInType === true) {
          if (this.options.smooth.enabled === true) {
            if (this.options.smooth.type === 'dynamic') {
              dataChanged = true;
              this.edgeType = new _edgesBezierEdgeDynamic2['default'](this.options, this.body, this.labelModule);
            } else if (this.options.smooth.type === 'cubicBezier') {
              this.edgeType = new _edgesCubicBezierEdge2['default'](this.options, this.body, this.labelModule);
            } else {
              this.edgeType = new _edgesBezierEdgeStatic2['default'](this.options, this.body, this.labelModule);
            }
          } else {
            this.edgeType = new _edgesStraightEdge2['default'](this.options, this.body, this.labelModule);
          }
        } else {
          // if nothing changes, we just set the options.
          this.edgeType.setOptions(this.options);
        }

        return dataChanged;
      }

      /**
       * Connect an edge to its nodes
       */
    }, {
      key: 'connect',
      value: function connect() {
        this.disconnect();

        this.from = this.body.nodes[this.fromId] || undefined;
        this.to = this.body.nodes[this.toId] || undefined;
        this.connected = this.from !== undefined && this.to !== undefined;

        if (this.connected === true) {
          this.from.attachEdge(this);
          this.to.attachEdge(this);
        } else {
          if (this.from) {
            this.from.detachEdge(this);
          }
          if (this.to) {
            this.to.detachEdge(this);
          }
        }

        this.edgeType.connect();
      }

      /**
       * Disconnect an edge from its nodes
       */
    }, {
      key: 'disconnect',
      value: function disconnect() {
        if (this.from) {
          this.from.detachEdge(this);
          this.from = undefined;
        }
        if (this.to) {
          this.to.detachEdge(this);
          this.to = undefined;
        }

        this.connected = false;
      }

      /**
       * get the title of this edge.
       * @return {string} title    The title of the edge, or undefined when no title
       *                           has been set.
       */
    }, {
      key: 'getTitle',
      value: function getTitle() {
        return this.title;
      }

      /**
       * check if this node is selecte
       * @return {boolean} selected   True if node is selected, else false
       */
    }, {
      key: 'isSelected',
      value: function isSelected() {
        return this.selected;
      }

      /**
       * Retrieve the value of the edge. Can be undefined
       * @return {Number} value
       */
    }, {
      key: 'getValue',
      value: function getValue() {
        return this.options.value;
      }

      /**
       * Adjust the value range of the edge. The edge will adjust it's width
       * based on its value.
       * @param {Number} min
       * @param {Number} max
       * @param total
       */
    }, {
      key: 'setValueRange',
      value: function setValueRange(min, max, total) {
        if (this.options.value !== undefined) {
          var scale = this.options.scaling.customScalingFunction(min, max, total, this.options.value);
          var widthDiff = this.options.scaling.max - this.options.scaling.min;
          if (this.options.scaling.label.enabled === true) {
            var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
            this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
          }
          this.options.width = this.options.scaling.min + scale * widthDiff;
        } else {
          this.options.width = this.baseWidth;
          this.options.font.size = this.baseFontSize;
        }

        this._setInteractionWidths();
        this.updateLabelModule();
      }
    }, {
      key: '_setInteractionWidths',
      value: function _setInteractionWidths() {
        if (typeof this.options.hoverWidth === 'function') {
          this.edgeType.hoverWidth = this.options.hoverWidth(this.options.width);
        } else {
          this.edgeType.hoverWidth = this.options.hoverWidth + this.options.width;
        }

        if (typeof this.options.selectionWidth === 'function') {
          this.edgeType.selectionWidth = this.options.selectionWidth(this.options.width);
        } else {
          this.edgeType.selectionWidth = this.options.selectionWidth + this.options.width;
        }
      }

      /**
       * Redraw a edge
       * Draw this edge in the given canvas
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
       * @param {CanvasRenderingContext2D}   ctx
       */
    }, {
      key: 'draw',
      value: function draw(ctx) {
        // get the via node from the edge type
        var viaNode = this.edgeType.getViaNode();
        var arrowData = {};

        // restore edge targets to defaults
        this.edgeType.fromPoint = this.from;
        this.edgeType.toPoint = this.to;

        // from and to arrows give a different end point for edges. we set them here
        if (this.options.arrows.from.enabled === true) {
          arrowData.from = this.edgeType.getArrowData(ctx, 'from', viaNode, this.selected, this.hover);
          if (this.options.arrowStrikethrough === false) this.edgeType.fromPoint = arrowData.from.core;
        }
        if (this.options.arrows.to.enabled === true) {
          arrowData.to = this.edgeType.getArrowData(ctx, 'to', viaNode, this.selected, this.hover);
          if (this.options.arrowStrikethrough === false) this.edgeType.toPoint = arrowData.to.core;
        }

        // the middle arrow depends on the line, which can depend on the to and from arrows so we do this one lastly.
        if (this.options.arrows.middle.enabled === true) {
          arrowData.middle = this.edgeType.getArrowData(ctx, 'middle', viaNode, this.selected, this.hover);
        }

        // draw everything
        this.edgeType.drawLine(ctx, this.selected, this.hover, viaNode);
        this.drawArrows(ctx, arrowData);
        this.drawLabel(ctx, viaNode);
      }
    }, {
      key: 'drawArrows',
      value: function drawArrows(ctx, arrowData) {
        if (this.options.arrows.from.enabled === true) {
          this.edgeType.drawArrowHead(ctx, this.selected, this.hover, arrowData.from);
        }
        if (this.options.arrows.middle.enabled === true) {
          this.edgeType.drawArrowHead(ctx, this.selected, this.hover, arrowData.middle);
        }
        if (this.options.arrows.to.enabled === true) {
          this.edgeType.drawArrowHead(ctx, this.selected, this.hover, arrowData.to);
        }
      }
    }, {
      key: 'drawLabel',
      value: function drawLabel(ctx, viaNode) {
        if (this.options.label !== undefined) {
          // set style
          var node1 = this.from;
          var node2 = this.to;
          var selected = this.from.selected || this.to.selected || this.selected;
          if (node1.id != node2.id) {
            this.labelModule.pointToSelf = false;
            var point = this.edgeType.getPoint(0.5, viaNode);
            ctx.save();

            // if the label has to be rotated:
            if (this.options.font.align !== "horizontal") {
              this.labelModule.calculateLabelSize(ctx, selected, point.x, point.y);
              ctx.translate(point.x, this.labelModule.size.yLine);
              this._rotateForLabelAlignment(ctx);
            }

            // draw the label
            this.labelModule.draw(ctx, point.x, point.y, selected);
            ctx.restore();
          } else {
            // Ignore the orientations.
            this.labelModule.pointToSelf = true;
            var x, y;
            var radius = this.options.selfReferenceSize;
            if (node1.shape.width > node1.shape.height) {
              x = node1.x + node1.shape.width * 0.5;
              y = node1.y - radius;
            } else {
              x = node1.x + radius;
              y = node1.y - node1.shape.height * 0.5;
            }
            point = this._pointOnCircle(x, y, radius, 0.125);
            this.labelModule.draw(ctx, point.x, point.y, selected);
          }
        }
      }

      /**
       * Check if this object is overlapping with the provided object
       * @param {Object} obj   an object with parameters left, top
       * @return {boolean}     True if location is located on the edge
       */
    }, {
      key: 'isOverlappingWith',
      value: function isOverlappingWith(obj) {
        if (this.connected) {
          var distMax = 10;
          var xFrom = this.from.x;
          var yFrom = this.from.y;
          var xTo = this.to.x;
          var yTo = this.to.y;
          var xObj = obj.left;
          var yObj = obj.top;

          var dist = this.edgeType.getDistanceToEdge(xFrom, yFrom, xTo, yTo, xObj, yObj);

          return dist < distMax;
        } else {
          return false;
        }
      }

      /**
       * Rotates the canvas so the text is most readable
       * @param {CanvasRenderingContext2D} ctx
       * @private
       */
    }, {
      key: '_rotateForLabelAlignment',
      value: function _rotateForLabelAlignment(ctx) {
        var dy = this.from.y - this.to.y;
        var dx = this.from.x - this.to.x;
        var angleInDegrees = Math.atan2(dy, dx);

        // rotate so label it is readable
        if (angleInDegrees < -1 && dx < 0 || angleInDegrees > 0 && dx < 0) {
          angleInDegrees = angleInDegrees + Math.PI;
        }

        ctx.rotate(angleInDegrees);
      }

      /**
       * Get a point on a circle
       * @param {Number} x
       * @param {Number} y
       * @param {Number} radius
       * @param {Number} percentage. Value between 0 (line start) and 1 (line end)
       * @return {Object} point
       * @private
       */
    }, {
      key: '_pointOnCircle',
      value: function _pointOnCircle(x, y, radius, percentage) {
        var angle = percentage * 2 * Math.PI;
        return {
          x: x + radius * Math.cos(angle),
          y: y - radius * Math.sin(angle)
        };
      }
    }, {
      key: 'select',
      value: function select() {
        this.selected = true;
      }
    }, {
      key: 'unselect',
      value: function unselect() {
        this.selected = false;
      }

      /**
       * cleans all required things on delete
       * @returns {*}
       */
    }, {
      key: 'cleanup',
      value: function cleanup() {
        return this.edgeType.cleanup();
      }
    }], [{
      key: 'parseOptions',
      value: function parseOptions(parentOptions, newOptions) {
        var allowDeletion = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];
        var globalOptions = arguments.length <= 3 || arguments[3] === undefined ? {} : arguments[3];

        var fields = ['arrowStrikethrough', 'id', 'from', 'hidden', 'hoverWidth', 'label', 'labelHighlightBold', 'length', 'line', 'opacity', 'physics', 'scaling', 'selectionWidth', 'selfReferenceSize', 'to', 'title', 'value', 'width'];

        // only deep extend the items in the field array. These do not have shorthand.
        util.selectiveDeepExtend(fields, parentOptions, newOptions, allowDeletion);

        util.mergeOptions(parentOptions, newOptions, 'smooth', allowDeletion, globalOptions);
        util.mergeOptions(parentOptions, newOptions, 'shadow', allowDeletion, globalOptions);

        if (newOptions.dashes !== undefined && newOptions.dashes !== null) {
          parentOptions.dashes = newOptions.dashes;
        } else if (allowDeletion === true && newOptions.dashes === null) {
          parentOptions.dashes = Object.create(globalOptions.dashes); // this sets the pointer of the option back to the global option.
        }

        // set the scaling newOptions
        if (newOptions.scaling !== undefined && newOptions.scaling !== null) {
          if (newOptions.scaling.min !== undefined) {
            parentOptions.scaling.min = newOptions.scaling.min;
          }
          if (newOptions.scaling.max !== undefined) {
            parentOptions.scaling.max = newOptions.scaling.max;
          }
          util.mergeOptions(parentOptions.scaling, newOptions.scaling, 'label', allowDeletion, globalOptions.scaling);
        } else if (allowDeletion === true && newOptions.scaling === null) {
          parentOptions.scaling = Object.create(globalOptions.scaling); // this sets the pointer of the option back to the global option.
        }

        // handle multiple input cases for arrows
        if (newOptions.arrows !== undefined && newOptions.arrows !== null) {
          if (typeof newOptions.arrows === 'string') {
            var arrows = newOptions.arrows.toLowerCase();
            if (arrows.indexOf("to") != -1) {
              parentOptions.arrows.to.enabled = true;
            }
            if (arrows.indexOf("middle") != -1) {
              parentOptions.arrows.middle.enabled = true;
            }
            if (arrows.indexOf("from") != -1) {
              parentOptions.arrows.from.enabled = true;
            }
          } else if (typeof newOptions.arrows === 'object') {
            util.mergeOptions(parentOptions.arrows, newOptions.arrows, 'to', allowDeletion, globalOptions.arrows);
            util.mergeOptions(parentOptions.arrows, newOptions.arrows, 'middle', allowDeletion, globalOptions.arrows);
            util.mergeOptions(parentOptions.arrows, newOptions.arrows, 'from', allowDeletion, globalOptions.arrows);
          } else {
            throw new Error("The arrow newOptions can only be an object or a string. Refer to the documentation. You used:" + JSON.stringify(newOptions.arrows));
          }
        } else if (allowDeletion === true && newOptions.arrows === null) {
          parentOptions.arrows = Object.create(globalOptions.arrows); // this sets the pointer of the option back to the global option.
        }

        // handle multiple input cases for color
        if (newOptions.color !== undefined && newOptions.color !== null) {
          // make a copy of the parent object in case this is referring to the global one (due to object create once, then update)
          parentOptions.color = util.deepExtend({}, parentOptions.color, true);
          if (util.isString(newOptions.color)) {
            parentOptions.color.color = newOptions.color;
            parentOptions.color.highlight = newOptions.color;
            parentOptions.color.hover = newOptions.color;
            parentOptions.color.inherit = false;
          } else {
            var colorsDefined = false;
            if (newOptions.color.color !== undefined) {
              parentOptions.color.color = newOptions.color.color;colorsDefined = true;
            }
            if (newOptions.color.highlight !== undefined) {
              parentOptions.color.highlight = newOptions.color.highlight;colorsDefined = true;
            }
            if (newOptions.color.hover !== undefined) {
              parentOptions.color.hover = newOptions.color.hover;colorsDefined = true;
            }
            if (newOptions.color.inherit !== undefined) {
              parentOptions.color.inherit = newOptions.color.inherit;
            }
            if (newOptions.color.opacity !== undefined) {
              parentOptions.color.opacity = Math.min(1, Math.max(0, newOptions.color.opacity));
            }

            if (newOptions.color.inherit === undefined && colorsDefined === true) {
              parentOptions.color.inherit = false;
            }
          }
        } else if (allowDeletion === true && newOptions.color === null) {
          parentOptions.color = util.bridgeObject(globalOptions.color); // set the object back to the global options
        }

        // handle the font settings
        if (newOptions.font !== undefined && newOptions.font !== null) {
          _sharedLabel2['default'].parseOptions(parentOptions.font, newOptions);
        } else if (allowDeletion === true && newOptions.font === null) {
          parentOptions.font = util.bridgeObject(globalOptions.font);
        }
      }
    }]);

    return Edge;
  })();

  exports['default'] = Edge;
  module.exports = exports['default'];

/***/ },
/* 82 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x3, _x4, _x5) { var _again = true; _function: while (_again) { var object = _x3, property = _x4, receiver = _x5; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x3 = parent; _x4 = property; _x5 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilCubicBezierEdgeBase = __webpack_require__(83);

  var _utilCubicBezierEdgeBase2 = _interopRequireDefault(_utilCubicBezierEdgeBase);

  var CubicBezierEdge = (function (_CubicBezierEdgeBase) {
    _inherits(CubicBezierEdge, _CubicBezierEdgeBase);

    function CubicBezierEdge(options, body, labelModule) {
      _classCallCheck(this, CubicBezierEdge);

      _get(Object.getPrototypeOf(CubicBezierEdge.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    /**
     * Draw a line between two nodes
     * @param {CanvasRenderingContext2D} ctx
     * @private
     */

    _createClass(CubicBezierEdge, [{
      key: '_line',
      value: function _line(ctx, viaNodes) {
        // get the coordinates of the support points.
        var via1 = viaNodes[0];
        var via2 = viaNodes[1];

        // start drawing the line.
        ctx.beginPath();
        ctx.moveTo(this.fromPoint.x, this.fromPoint.y);

        // fallback to normal straight edges
        if (viaNodes === undefined || via1.x === undefined) {
          ctx.lineTo(this.toPoint.x, this.toPoint.y);
        } else {
          ctx.bezierCurveTo(via1.x, via1.y, via2.x, via2.y, this.toPoint.x, this.toPoint.y);
        }
        // draw shadow if enabled
        this.enableShadow(ctx);
        ctx.stroke();
        this.disableShadow(ctx);
      }
    }, {
      key: '_getViaCoordinates',
      value: function _getViaCoordinates() {
        var dx = this.from.x - this.to.x;
        var dy = this.from.y - this.to.y;

        var x1 = undefined,
            y1 = undefined,
            x2 = undefined,
            y2 = undefined;
        var roundness = this.options.smooth.roundness;

        // horizontal if x > y or if direction is forced or if direction is horizontal
        if ((Math.abs(dx) > Math.abs(dy) || this.options.smooth.forceDirection === true || this.options.smooth.forceDirection === 'horizontal') && this.options.smooth.forceDirection !== 'vertical') {
          y1 = this.from.y;
          y2 = this.to.y;
          x1 = this.from.x - roundness * dx;
          x2 = this.to.x + roundness * dx;
        } else {
          y1 = this.from.y - roundness * dy;
          y2 = this.to.y + roundness * dy;
          x1 = this.from.x;
          x2 = this.to.x;
        }

        return [{ x: x1, y: y1 }, { x: x2, y: y2 }];
      }
    }, {
      key: 'getViaNode',
      value: function getViaNode() {
        return this._getViaCoordinates();
      }
    }, {
      key: '_findBorderPosition',
      value: function _findBorderPosition(nearNode, ctx) {
        return this._findBorderPositionBezier(nearNode, ctx);
      }
    }, {
      key: '_getDistanceToEdge',
      value: function _getDistanceToEdge(x1, y1, x2, y2, x3, y3) {
        var _ref = arguments.length <= 6 || arguments[6] === undefined ? this._getViaCoordinates() : arguments[6];

        var _ref2 = _slicedToArray(_ref, 2);

        var via1 = _ref2[0];
        var via2 = _ref2[1];
        // x3,y3 is the point
        return this._getDistanceToBezierEdge(x1, y1, x2, y2, x3, y3, via1, via2);
      }

      /**
       * Combined function of pointOnLine and pointOnBezier. This gives the coordinates of a point on the line at a certain percentage of the way
       * @param percentage
       * @param via
       * @returns {{x: number, y: number}}
       * @private
       */
    }, {
      key: 'getPoint',
      value: function getPoint(percentage) {
        var _ref3 = arguments.length <= 1 || arguments[1] === undefined ? this._getViaCoordinates() : arguments[1];

        var _ref32 = _slicedToArray(_ref3, 2);

        var via1 = _ref32[0];
        var via2 = _ref32[1];

        var t = percentage;
        var vec = [];
        vec[0] = Math.pow(1 - t, 3);
        vec[1] = 3 * t * Math.pow(1 - t, 2);
        vec[2] = 3 * Math.pow(t, 2) * (1 - t);
        vec[3] = Math.pow(t, 3);
        var x = vec[0] * this.fromPoint.x + vec[1] * via1.x + vec[2] * via2.x + vec[3] * this.toPoint.x;
        var y = vec[0] * this.fromPoint.y + vec[1] * via1.y + vec[2] * via2.y + vec[3] * this.toPoint.y;

        return { x: x, y: y };
      }
    }]);

    return CubicBezierEdge;
  })(_utilCubicBezierEdgeBase2['default']);

  exports['default'] = CubicBezierEdge;
  module.exports = exports['default'];

/***/ },
/* 83 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _BezierEdgeBase2 = __webpack_require__(84);

  var _BezierEdgeBase3 = _interopRequireDefault(_BezierEdgeBase2);

  var CubicBezierEdgeBase = (function (_BezierEdgeBase) {
    _inherits(CubicBezierEdgeBase, _BezierEdgeBase);

    function CubicBezierEdgeBase(options, body, labelModule) {
      _classCallCheck(this, CubicBezierEdgeBase);

      _get(Object.getPrototypeOf(CubicBezierEdgeBase.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    /**
     * Calculate the distance between a point (x3,y3) and a line segment from
     * (x1,y1) to (x2,y2).
     * http://stackoverflow.com/questions/849211/shortest-distancae-between-a-point-and-a-line-segment
     * https://en.wikipedia.org/wiki/B%C3%A9zier_curve
     * @param {number} x1 from x
     * @param {number} y1 from y
     * @param {number} x2 to x
     * @param {number} y2 to y
     * @param {number} x3 point to check x
     * @param {number} y3 point to check y
     * @private
     */

    _createClass(CubicBezierEdgeBase, [{
      key: '_getDistanceToBezierEdge',
      value: function _getDistanceToBezierEdge(x1, y1, x2, y2, x3, y3, via1, via2) {
        // x3,y3 is the point
        var minDistance = 1e9;
        var distance = undefined;
        var i = undefined,
            t = undefined,
            x = undefined,
            y = undefined;
        var lastX = x1;
        var lastY = y1;
        var vec = [0, 0, 0, 0];
        for (i = 1; i < 10; i++) {
          t = 0.1 * i;
          vec[0] = Math.pow(1 - t, 3);
          vec[1] = 3 * t * Math.pow(1 - t, 2);
          vec[2] = 3 * Math.pow(t, 2) * (1 - t);
          vec[3] = Math.pow(t, 3);
          x = vec[0] * x1 + vec[1] * via1.x + vec[2] * via2.x + vec[3] * x2;
          y = vec[0] * y1 + vec[1] * via1.y + vec[2] * via2.y + vec[3] * y2;
          if (i > 0) {
            distance = this._getDistanceToLine(lastX, lastY, x, y, x3, y3);
            minDistance = distance < minDistance ? distance : minDistance;
          }
          lastX = x;
          lastY = y;
        }

        return minDistance;
      }
    }]);

    return CubicBezierEdgeBase;
  })(_BezierEdgeBase3['default']);

  exports['default'] = CubicBezierEdgeBase;
  module.exports = exports['default'];

/***/ },
/* 84 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x2, _x3, _x4) { var _again = true; _function: while (_again) { var object = _x2, property = _x3, receiver = _x4; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x2 = parent; _x3 = property; _x4 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _EdgeBase2 = __webpack_require__(85);

  var _EdgeBase3 = _interopRequireDefault(_EdgeBase2);

  var BezierEdgeBase = (function (_EdgeBase) {
    _inherits(BezierEdgeBase, _EdgeBase);

    function BezierEdgeBase(options, body, labelModule) {
      _classCallCheck(this, BezierEdgeBase);

      _get(Object.getPrototypeOf(BezierEdgeBase.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    /**
     * This function uses binary search to look for the point where the bezier curve crosses the border of the node.
     *
     * @param nearNode
     * @param ctx
     * @param viaNode
     * @param nearNode
     * @param ctx
     * @param viaNode
     * @param nearNode
     * @param ctx
     * @param viaNode
     */

    _createClass(BezierEdgeBase, [{
      key: '_findBorderPositionBezier',
      value: function _findBorderPositionBezier(nearNode, ctx) {
        var viaNode = arguments.length <= 2 || arguments[2] === undefined ? this._getViaCoordinates() : arguments[2];

        var maxIterations = 10;
        var iteration = 0;
        var low = 0;
        var high = 1;
        var pos, angle, distanceToBorder, distanceToPoint, difference;
        var threshold = 0.2;
        var node = this.to;
        var from = false;
        if (nearNode.id === this.from.id) {
          node = this.from;
          from = true;
        }

        while (low <= high && iteration < maxIterations) {
          var middle = (low + high) * 0.5;

          pos = this.getPoint(middle, viaNode);
          angle = Math.atan2(node.y - pos.y, node.x - pos.x);
          distanceToBorder = node.distanceToBorder(ctx, angle);
          distanceToPoint = Math.sqrt(Math.pow(pos.x - node.x, 2) + Math.pow(pos.y - node.y, 2));
          difference = distanceToBorder - distanceToPoint;
          if (Math.abs(difference) < threshold) {
            break; // found
          } else if (difference < 0) {
              // distance to nodes is larger than distance to border --> t needs to be bigger if we're looking at the to node.
              if (from === false) {
                low = middle;
              } else {
                high = middle;
              }
            } else {
              if (from === false) {
                high = middle;
              } else {
                low = middle;
              }
            }

          iteration++;
        }
        pos.t = middle;

        return pos;
      }

      /**
       * Calculate the distance between a point (x3,y3) and a line segment from
       * (x1,y1) to (x2,y2).
       * http://stackoverflow.com/questions/849211/shortest-distancae-between-a-point-and-a-line-segment
       * @param {number} x1 from x
       * @param {number} y1 from y
       * @param {number} x2 to x
       * @param {number} y2 to y
       * @param {number} x3 point to check x
       * @param {number} y3 point to check y
       * @private
       */
    }, {
      key: '_getDistanceToBezierEdge',
      value: function _getDistanceToBezierEdge(x1, y1, x2, y2, x3, y3, via) {
        // x3,y3 is the point
        var minDistance = 1e9;
        var distance = undefined;
        var i = undefined,
            t = undefined,
            x = undefined,
            y = undefined;
        var lastX = x1;
        var lastY = y1;
        for (i = 1; i < 10; i++) {
          t = 0.1 * i;
          x = Math.pow(1 - t, 2) * x1 + 2 * t * (1 - t) * via.x + Math.pow(t, 2) * x2;
          y = Math.pow(1 - t, 2) * y1 + 2 * t * (1 - t) * via.y + Math.pow(t, 2) * y2;
          if (i > 0) {
            distance = this._getDistanceToLine(lastX, lastY, x, y, x3, y3);
            minDistance = distance < minDistance ? distance : minDistance;
          }
          lastX = x;
          lastY = y;
        }

        return minDistance;
      }
    }]);

    return BezierEdgeBase;
  })(_EdgeBase3['default']);

  exports['default'] = BezierEdgeBase;
  module.exports = exports['default'];

/***/ },
/* 85 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var util = __webpack_require__(1);

  var EdgeBase = (function () {
    function EdgeBase(options, body, labelModule) {
      _classCallCheck(this, EdgeBase);

      this.body = body;
      this.labelModule = labelModule;
      this.options = {};
      this.setOptions(options);
      this.colorDirty = true;
      this.color = {};
      this.selectionWidth = 2;
      this.hoverWidth = 1.5;
      this.fromPoint = this.from;
      this.toPoint = this.to;
    }

    _createClass(EdgeBase, [{
      key: 'connect',
      value: function connect() {
        this.from = this.body.nodes[this.options.from];
        this.to = this.body.nodes[this.options.to];
      }
    }, {
      key: 'cleanup',
      value: function cleanup() {
        return false;
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        this.options = options;
        this.from = this.body.nodes[this.options.from];
        this.to = this.body.nodes[this.options.to];
        this.id = this.options.id;
      }

      /**
       * Redraw a edge as a line
       * Draw this edge in the given canvas
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
       * @param {CanvasRenderingContext2D}   ctx
       * @private
       */
    }, {
      key: 'drawLine',
      value: function drawLine(ctx, selected, hover, viaNode) {
        // set style
        ctx.strokeStyle = this.getColor(ctx, selected, hover);
        ctx.lineWidth = this.getLineWidth(selected, hover);

        if (this.options.dashes !== false) {
          this._drawDashedLine(ctx, viaNode);
        } else {
          this._drawLine(ctx, viaNode);
        }
      }
    }, {
      key: '_drawLine',
      value: function _drawLine(ctx, viaNode, fromPoint, toPoint) {
        if (this.from != this.to) {
          // draw line
          this._line(ctx, viaNode, fromPoint, toPoint);
        } else {
          var _getCircleData2 = this._getCircleData(ctx);

          var _getCircleData22 = _slicedToArray(_getCircleData2, 3);

          var x = _getCircleData22[0];
          var y = _getCircleData22[1];
          var radius = _getCircleData22[2];

          this._circle(ctx, x, y, radius);
        }
      }
    }, {
      key: '_drawDashedLine',
      value: function _drawDashedLine(ctx, viaNode, fromPoint, toPoint) {
        ctx.lineCap = 'round';
        var pattern = [5, 5];
        if (Array.isArray(this.options.dashes) === true) {
          pattern = this.options.dashes;
        }

        // only firefox and chrome support this method, else we use the legacy one.
        if (ctx.setLineDash !== undefined) {
          ctx.save();

          // set dash settings for chrome or firefox
          ctx.setLineDash(pattern);
          ctx.lineDashOffset = 0;

          // draw the line
          if (this.from != this.to) {
            // draw line
            this._line(ctx, viaNode);
          } else {
            var _getCircleData3 = this._getCircleData(ctx);

            var _getCircleData32 = _slicedToArray(_getCircleData3, 3);

            var x = _getCircleData32[0];
            var y = _getCircleData32[1];
            var radius = _getCircleData32[2];

            this._circle(ctx, x, y, radius);
          }

          // restore the dash settings.
          ctx.setLineDash([0]);
          ctx.lineDashOffset = 0;
          ctx.restore();
        } else {
          // unsupporting smooth lines
          if (this.from != this.to) {
            // draw line
            ctx.dashedLine(this.from.x, this.from.y, this.to.x, this.to.y, pattern);
          } else {
            var _getCircleData4 = this._getCircleData(ctx);

            var _getCircleData42 = _slicedToArray(_getCircleData4, 3);

            var x = _getCircleData42[0];
            var y = _getCircleData42[1];
            var radius = _getCircleData42[2];

            this._circle(ctx, x, y, radius);
          }
          // draw shadow if enabled
          this.enableShadow(ctx);

          ctx.stroke();

          // disable shadows for other elements.
          this.disableShadow(ctx);
        }
      }
    }, {
      key: 'findBorderPosition',
      value: function findBorderPosition(nearNode, ctx, options) {
        if (this.from != this.to) {
          return this._findBorderPosition(nearNode, ctx, options);
        } else {
          return this._findBorderPositionCircle(nearNode, ctx, options);
        }
      }
    }, {
      key: 'findBorderPositions',
      value: function findBorderPositions(ctx) {
        var from = {};
        var to = {};
        if (this.from != this.to) {
          from = this._findBorderPosition(this.from, ctx);
          to = this._findBorderPosition(this.to, ctx);
        } else {
          var _getCircleData5 = this._getCircleData(ctx);

          var _getCircleData52 = _slicedToArray(_getCircleData5, 3);

          var x = _getCircleData52[0];
          var y = _getCircleData52[1];
          var radius = _getCircleData52[2];

          from = this._findBorderPositionCircle(this.from, ctx, { x: x, y: y, low: 0.25, high: 0.6, direction: -1 });
          to = this._findBorderPositionCircle(this.from, ctx, { x: x, y: y, low: 0.6, high: 0.8, direction: 1 });
        }
        return { from: from, to: to };
      }
    }, {
      key: '_getCircleData',
      value: function _getCircleData(ctx) {
        var x = undefined,
            y = undefined;
        var node = this.from;
        var radius = this.options.selfReferenceSize;

        if (ctx !== undefined) {
          if (node.shape.width === undefined) {
            node.shape.resize(ctx);
          }
        }

        // get circle coordinates
        if (node.shape.width > node.shape.height) {
          x = node.x + node.shape.width * 0.5;
          y = node.y - radius;
        } else {
          x = node.x + radius;
          y = node.y - node.shape.height * 0.5;
        }
        return [x, y, radius];
      }

      /**
       * Get a point on a circle
       * @param {Number} x
       * @param {Number} y
       * @param {Number} radius
       * @param {Number} percentage. Value between 0 (line start) and 1 (line end)
       * @return {Object} point
       * @private
       */
    }, {
      key: '_pointOnCircle',
      value: function _pointOnCircle(x, y, radius, percentage) {
        var angle = percentage * 2 * Math.PI;
        return {
          x: x + radius * Math.cos(angle),
          y: y - radius * Math.sin(angle)
        };
      }

      /**
       * This function uses binary search to look for the point where the circle crosses the border of the node.
       * @param node
       * @param ctx
       * @param options
       * @returns {*}
       * @private
       */
    }, {
      key: '_findBorderPositionCircle',
      value: function _findBorderPositionCircle(node, ctx, options) {
        var x = options.x;
        var y = options.y;
        var low = options.low;
        var high = options.high;
        var direction = options.direction;

        var maxIterations = 10;
        var iteration = 0;
        var radius = this.options.selfReferenceSize;
        var pos = undefined,
            angle = undefined,
            distanceToBorder = undefined,
            distanceToPoint = undefined,
            difference = undefined;
        var threshold = 0.05;
        var middle = (low + high) * 0.5;

        while (low <= high && iteration < maxIterations) {
          middle = (low + high) * 0.5;

          pos = this._pointOnCircle(x, y, radius, middle);
          angle = Math.atan2(node.y - pos.y, node.x - pos.x);
          distanceToBorder = node.distanceToBorder(ctx, angle);
          distanceToPoint = Math.sqrt(Math.pow(pos.x - node.x, 2) + Math.pow(pos.y - node.y, 2));
          difference = distanceToBorder - distanceToPoint;
          if (Math.abs(difference) < threshold) {
            break; // found
          } else if (difference > 0) {
              // distance to nodes is larger than distance to border --> t needs to be bigger if we're looking at the to node.
              if (direction > 0) {
                low = middle;
              } else {
                high = middle;
              }
            } else {
              if (direction > 0) {
                high = middle;
              } else {
                low = middle;
              }
            }
          iteration++;
        }
        pos.t = middle;

        return pos;
      }

      /**
       * Get the line width of the edge. Depends on width and whether one of the
       * connected nodes is selected.
       * @return {Number} width
       * @private
       */
    }, {
      key: 'getLineWidth',
      value: function getLineWidth(selected, hover) {
        if (selected === true) {
          return Math.max(this.selectionWidth, 0.3 / this.body.view.scale);
        } else {
          if (hover === true) {
            return Math.max(this.hoverWidth, 0.3 / this.body.view.scale);
          } else {
            return Math.max(this.options.width, 0.3 / this.body.view.scale);
          }
        }
      }
    }, {
      key: 'getColor',
      value: function getColor(ctx, selected, hover) {
        var colorOptions = this.options.color;
        if (colorOptions.inherit !== false) {
          // when this is a loop edge, just use the 'from' method
          if (colorOptions.inherit === 'both' && this.from.id !== this.to.id) {
            var grd = ctx.createLinearGradient(this.from.x, this.from.y, this.to.x, this.to.y);
            var fromColor = undefined,
                toColor = undefined;
            fromColor = this.from.options.color.highlight.border;
            toColor = this.to.options.color.highlight.border;

            if (this.from.selected === false && this.to.selected === false) {
              fromColor = util.overrideOpacity(this.from.options.color.border, this.options.color.opacity);
              toColor = util.overrideOpacity(this.to.options.color.border, this.options.color.opacity);
            } else if (this.from.selected === true && this.to.selected === false) {
              toColor = this.to.options.color.border;
            } else if (this.from.selected === false && this.to.selected === true) {
              fromColor = this.from.options.color.border;
            }
            grd.addColorStop(0, fromColor);
            grd.addColorStop(1, toColor);

            // -------------------- this returns -------------------- //
            return grd;
          }

          if (this.colorDirty === true) {
            if (colorOptions.inherit === "to") {
              this.color.highlight = this.to.options.color.highlight.border;
              this.color.hover = this.to.options.color.hover.border;
              this.color.color = util.overrideOpacity(this.to.options.color.border, colorOptions.opacity);
            } else {
              // (this.options.color.inherit.source === "from") {
              this.color.highlight = this.from.options.color.highlight.border;
              this.color.hover = this.from.options.color.hover.border;
              this.color.color = util.overrideOpacity(this.from.options.color.border, colorOptions.opacity);
            }
          }
        } else if (this.colorDirty === true) {
          this.color.highlight = colorOptions.highlight;
          this.color.hover = colorOptions.hover;
          this.color.color = util.overrideOpacity(colorOptions.color, colorOptions.opacity);
        }

        // if color inherit is on and gradients are used, the function has already returned by now.
        this.colorDirty = false;

        if (selected === true) {
          return this.color.highlight;
        } else if (hover === true) {
          return this.color.hover;
        } else {
          return this.color.color;
        }
      }

      /**
       * Draw a line from a node to itself, a circle
       * @param {CanvasRenderingContext2D} ctx
       * @param {Number} x
       * @param {Number} y
       * @param {Number} radius
       * @private
       */
    }, {
      key: '_circle',
      value: function _circle(ctx, x, y, radius) {
        // draw shadow if enabled
        this.enableShadow(ctx);

        // draw a circle
        ctx.beginPath();
        ctx.arc(x, y, radius, 0, 2 * Math.PI, false);
        ctx.stroke();

        // disable shadows for other elements.
        this.disableShadow(ctx);
      }

      /**
       * Calculate the distance between a point (x3,y3) and a line segment from
       * (x1,y1) to (x2,y2).
       * http://stackoverflow.com/questions/849211/shortest-distancae-between-a-point-and-a-line-segment
       * @param {number} x1
       * @param {number} y1
       * @param {number} x2
       * @param {number} y2
       * @param {number} x3
       * @param {number} y3
       * @private
       */
    }, {
      key: 'getDistanceToEdge',
      value: function getDistanceToEdge(x1, y1, x2, y2, x3, y3, via) {
        // x3,y3 is the point
        var returnValue = 0;
        if (this.from != this.to) {
          returnValue = this._getDistanceToEdge(x1, y1, x2, y2, x3, y3, via);
        } else {
          var _getCircleData6 = this._getCircleData();

          var _getCircleData62 = _slicedToArray(_getCircleData6, 3);

          var x = _getCircleData62[0];
          var y = _getCircleData62[1];
          var radius = _getCircleData62[2];

          var dx = x - x3;
          var dy = y - y3;
          returnValue = Math.abs(Math.sqrt(dx * dx + dy * dy) - radius);
        }

        if (this.labelModule.size.left < x3 && this.labelModule.size.left + this.labelModule.size.width > x3 && this.labelModule.size.top < y3 && this.labelModule.size.top + this.labelModule.size.height > y3) {
          return 0;
        } else {
          return returnValue;
        }
      }
    }, {
      key: '_getDistanceToLine',
      value: function _getDistanceToLine(x1, y1, x2, y2, x3, y3) {
        var px = x2 - x1;
        var py = y2 - y1;
        var something = px * px + py * py;
        var u = ((x3 - x1) * px + (y3 - y1) * py) / something;

        if (u > 1) {
          u = 1;
        } else if (u < 0) {
          u = 0;
        }

        var x = x1 + u * px;
        var y = y1 + u * py;
        var dx = x - x3;
        var dy = y - y3;

        //# Note: If the actual distance does not matter,
        //# if you only want to compare what this function
        //# returns to other results of this function, you
        //# can just return the squared distance instead
        //# (i.e. remove the sqrt) to gain a little performance

        return Math.sqrt(dx * dx + dy * dy);
      }

      /**
       *
       * @param ctx
       * @param position
       * @param viaNode
       */
    }, {
      key: 'getArrowData',
      value: function getArrowData(ctx, position, viaNode, selected, hover) {
        // set lets
        var angle = undefined;
        var arrowPoint = undefined;
        var node1 = undefined;
        var node2 = undefined;
        var guideOffset = undefined;
        var scaleFactor = undefined;
        var lineWidth = this.getLineWidth(selected, hover);

        if (position === 'from') {
          node1 = this.from;
          node2 = this.to;
          guideOffset = 0.1;
          scaleFactor = this.options.arrows.from.scaleFactor;
        } else if (position === 'to') {
          node1 = this.to;
          node2 = this.from;
          guideOffset = -0.1;
          scaleFactor = this.options.arrows.to.scaleFactor;
        } else {
          node1 = this.to;
          node2 = this.from;
          scaleFactor = this.options.arrows.middle.scaleFactor;
        }

        // if not connected to itself
        if (node1 != node2) {
          if (position !== 'middle') {
            // draw arrow head
            if (this.options.smooth.enabled === true) {
              arrowPoint = this.findBorderPosition(node1, ctx, { via: viaNode });
              var guidePos = this.getPoint(Math.max(0.0, Math.min(1.0, arrowPoint.t + guideOffset)), viaNode);
              angle = Math.atan2(arrowPoint.y - guidePos.y, arrowPoint.x - guidePos.x);
            } else {
              angle = Math.atan2(node1.y - node2.y, node1.x - node2.x);
              arrowPoint = this.findBorderPosition(node1, ctx);
            }
          } else {
            angle = Math.atan2(node1.y - node2.y, node1.x - node2.x);
            arrowPoint = this.getPoint(0.5, viaNode); // this is 0.6 to account for the size of the arrow.
          }
        } else {
            var _getCircleData7 = this._getCircleData(ctx);

            var _getCircleData72 = _slicedToArray(_getCircleData7, 3);

            var x = _getCircleData72[0];
            var y = _getCircleData72[1];
            var radius = _getCircleData72[2];

            if (position === 'from') {
              arrowPoint = this.findBorderPosition(this.from, ctx, { x: x, y: y, low: 0.25, high: 0.6, direction: -1 });
              angle = arrowPoint.t * -2 * Math.PI + 1.5 * Math.PI + 0.1 * Math.PI;
            } else if (position === 'to') {
              arrowPoint = this.findBorderPosition(this.from, ctx, { x: x, y: y, low: 0.6, high: 1.0, direction: 1 });
              angle = arrowPoint.t * -2 * Math.PI + 1.5 * Math.PI - 1.1 * Math.PI;
            } else {
              arrowPoint = this._pointOnCircle(x, y, radius, 0.175);
              angle = 3.9269908169872414; // === 0.175 * -2 * Math.PI + 1.5 * Math.PI + 0.1 * Math.PI;
            }
          }

        var length = 15 * scaleFactor + 3 * lineWidth; // 3* lineWidth is the width of the edge.

        var xi = arrowPoint.x - length * 0.9 * Math.cos(angle);
        var yi = arrowPoint.y - length * 0.9 * Math.sin(angle);
        var arrowCore = { x: xi, y: yi };

        return { point: arrowPoint, core: arrowCore, angle: angle, length: length };
      }

      /**
       *
       * @param ctx
       * @param selected
       * @param hover
       * @param arrowData
       */
    }, {
      key: 'drawArrowHead',
      value: function drawArrowHead(ctx, selected, hover, arrowData) {
        // set style
        ctx.strokeStyle = this.getColor(ctx, selected, hover);
        ctx.fillStyle = ctx.strokeStyle;
        ctx.lineWidth = this.getLineWidth(selected, hover);

        // draw arrow at the end of the line
        ctx.arrow(arrowData.point.x, arrowData.point.y, arrowData.angle, arrowData.length);

        // draw shadow if enabled
        this.enableShadow(ctx);
        ctx.fill();
        // disable shadows for other elements.
        this.disableShadow(ctx);
      }
    }, {
      key: 'enableShadow',
      value: function enableShadow(ctx) {
        if (this.options.shadow.enabled === true) {
          ctx.shadowColor = this.options.shadow.color;
          ctx.shadowBlur = this.options.shadow.size;
          ctx.shadowOffsetX = this.options.shadow.x;
          ctx.shadowOffsetY = this.options.shadow.y;
        }
      }
    }, {
      key: 'disableShadow',
      value: function disableShadow(ctx) {
        if (this.options.shadow.enabled === true) {
          ctx.shadowColor = 'rgba(0,0,0,0)';
          ctx.shadowBlur = 0;
          ctx.shadowOffsetX = 0;
          ctx.shadowOffsetY = 0;
        }
      }
    }]);

    return EdgeBase;
  })();

  exports['default'] = EdgeBase;
  module.exports = exports['default'];

  // draw circle

/***/ },
/* 86 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x2, _x3, _x4) { var _again = true; _function: while (_again) { var object = _x2, property = _x3, receiver = _x4; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x2 = parent; _x3 = property; _x4 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilBezierEdgeBase = __webpack_require__(84);

  var _utilBezierEdgeBase2 = _interopRequireDefault(_utilBezierEdgeBase);

  var BezierEdgeDynamic = (function (_BezierEdgeBase) {
    _inherits(BezierEdgeDynamic, _BezierEdgeBase);

    function BezierEdgeDynamic(options, body, labelModule) {
      var _this = this;

      _classCallCheck(this, BezierEdgeDynamic);

      //this.via = undefined; // Here for completeness but not allowed to defined before super() is invoked.
      _get(Object.getPrototypeOf(BezierEdgeDynamic.prototype), "constructor", this).call(this, options, body, labelModule); // --> this calls the setOptions below
      this._boundFunction = function () {
        _this.positionBezierNode();
      };
      this.body.emitter.on("_repositionBezierNodes", this._boundFunction);
    }

    _createClass(BezierEdgeDynamic, [{
      key: "setOptions",
      value: function setOptions(options) {
        // check if the physics has changed.
        var physicsChange = false;
        if (this.options.physics !== options.physics) {
          physicsChange = true;
        }

        // set the options and the to and from nodes
        this.options = options;
        this.id = this.options.id;
        this.from = this.body.nodes[this.options.from];
        this.to = this.body.nodes[this.options.to];

        // setup the support node and connect
        this.setupSupportNode();
        this.connect();

        // when we change the physics state of the edge, we reposition the support node.
        if (physicsChange === true) {
          this.via.setOptions({ physics: this.options.physics });
          this.positionBezierNode();
        }
      }
    }, {
      key: "connect",
      value: function connect() {
        this.from = this.body.nodes[this.options.from];
        this.to = this.body.nodes[this.options.to];
        if (this.from === undefined || this.to === undefined || this.options.physics === false) {
          this.via.setOptions({ physics: false });
        } else {
          // fix weird behaviour where a self referencing node has physics enabled
          if (this.from.id === this.to.id) {
            this.via.setOptions({ physics: false });
          } else {
            this.via.setOptions({ physics: true });
          }
        }
      }

      /**
       * remove the support nodes
       * @returns {boolean}
       */
    }, {
      key: "cleanup",
      value: function cleanup() {
        this.body.emitter.off("_repositionBezierNodes", this._boundFunction);
        if (this.via !== undefined) {
          delete this.body.nodes[this.via.id];
          this.via = undefined;
          return true;
        }
        return false;
      }

      /**
       * Bezier curves require an anchor point to calculate the smooth flow. These points are nodes. These nodes are invisible but
       * are used for the force calculation.
       *
       * The changed data is not called, if needed, it is returned by the main edge constructor.
       * @private
       */
    }, {
      key: "setupSupportNode",
      value: function setupSupportNode() {
        if (this.via === undefined) {
          var nodeId = "edgeId:" + this.id;
          var node = this.body.functions.createNode({
            id: nodeId,
            shape: 'circle',
            physics: true,
            hidden: true
          });
          this.body.nodes[nodeId] = node;
          this.via = node;
          this.via.parentEdgeId = this.id;
          this.positionBezierNode();
        }
      }
    }, {
      key: "positionBezierNode",
      value: function positionBezierNode() {
        if (this.via !== undefined && this.from !== undefined && this.to !== undefined) {
          this.via.x = 0.5 * (this.from.x + this.to.x);
          this.via.y = 0.5 * (this.from.y + this.to.y);
        } else if (this.via !== undefined) {
          this.via.x = 0;
          this.via.y = 0;
        }
      }

      /**
       * Draw a line between two nodes
       * @param {CanvasRenderingContext2D} ctx
       * @private
       */
    }, {
      key: "_line",
      value: function _line(ctx, viaNode) {
        // draw a straight line
        ctx.beginPath();
        ctx.moveTo(this.fromPoint.x, this.fromPoint.y);
        // fallback to normal straight edges
        if (viaNode.x === undefined) {
          ctx.lineTo(this.toPoint.x, this.toPoint.y);
        } else {
          ctx.quadraticCurveTo(viaNode.x, viaNode.y, this.toPoint.x, this.toPoint.y);
        }
        // draw shadow if enabled
        this.enableShadow(ctx);
        ctx.stroke();
        this.disableShadow(ctx);
      }
    }, {
      key: "getViaNode",
      value: function getViaNode() {
        return this.via;
      }

      /**
       * Combined function of pointOnLine and pointOnBezier. This gives the coordinates of a point on the line at a certain percentage of the way
       * @param percentage
       * @param viaNode
       * @returns {{x: number, y: number}}
       * @private
       */
    }, {
      key: "getPoint",
      value: function getPoint(percentage) {
        var viaNode = arguments.length <= 1 || arguments[1] === undefined ? this.via : arguments[1];

        var t = percentage;
        var x = Math.pow(1 - t, 2) * this.fromPoint.x + 2 * t * (1 - t) * viaNode.x + Math.pow(t, 2) * this.toPoint.x;
        var y = Math.pow(1 - t, 2) * this.fromPoint.y + 2 * t * (1 - t) * viaNode.y + Math.pow(t, 2) * this.toPoint.y;

        return { x: x, y: y };
      }
    }, {
      key: "_findBorderPosition",
      value: function _findBorderPosition(nearNode, ctx) {
        return this._findBorderPositionBezier(nearNode, ctx, this.via);
      }
    }, {
      key: "_getDistanceToEdge",
      value: function _getDistanceToEdge(x1, y1, x2, y2, x3, y3) {
        // x3,y3 is the point
        return this._getDistanceToBezierEdge(x1, y1, x2, y2, x3, y3, this.via);
      }
    }]);

    return BezierEdgeDynamic;
  })(_utilBezierEdgeBase2["default"]);

  exports["default"] = BezierEdgeDynamic;
  module.exports = exports["default"];

/***/ },
/* 87 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x4, _x5, _x6) { var _again = true; _function: while (_again) { var object = _x4, property = _x5, receiver = _x6; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x4 = parent; _x5 = property; _x6 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilBezierEdgeBase = __webpack_require__(84);

  var _utilBezierEdgeBase2 = _interopRequireDefault(_utilBezierEdgeBase);

  var BezierEdgeStatic = (function (_BezierEdgeBase) {
    _inherits(BezierEdgeStatic, _BezierEdgeBase);

    function BezierEdgeStatic(options, body, labelModule) {
      _classCallCheck(this, BezierEdgeStatic);

      _get(Object.getPrototypeOf(BezierEdgeStatic.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    /**
     * Draw a line between two nodes
     * @param {CanvasRenderingContext2D} ctx
     * @private
     */

    _createClass(BezierEdgeStatic, [{
      key: '_line',
      value: function _line(ctx, viaNode) {
        // draw a straight line
        ctx.beginPath();
        ctx.moveTo(this.fromPoint.x, this.fromPoint.y);

        // fallback to normal straight edges
        if (viaNode.x === undefined) {
          ctx.lineTo(this.toPoint.x, this.toPoint.y);
        } else {
          ctx.quadraticCurveTo(viaNode.x, viaNode.y, this.toPoint.x, this.toPoint.y);
        }
        // draw shadow if enabled
        this.enableShadow(ctx);
        ctx.stroke();
        this.disableShadow(ctx);
      }
    }, {
      key: 'getViaNode',
      value: function getViaNode() {
        return this._getViaCoordinates();
      }

      /**
       * We do not use the to and fromPoints here to make the via nodes the same as edges without arrows.
       * @returns {{x: undefined, y: undefined}}
       * @private
       */
    }, {
      key: '_getViaCoordinates',
      value: function _getViaCoordinates() {
        var xVia = undefined;
        var yVia = undefined;
        var factor = this.options.smooth.roundness;
        var type = this.options.smooth.type;
        var dx = Math.abs(this.from.x - this.to.x);
        var dy = Math.abs(this.from.y - this.to.y);
        if (type === 'discrete' || type === 'diagonalCross') {
          if (Math.abs(this.from.x - this.to.x) <= Math.abs(this.from.y - this.to.y)) {
            if (this.from.y >= this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dy;
                yVia = this.from.y - factor * dy;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dy;
                yVia = this.from.y - factor * dy;
              }
            } else if (this.from.y < this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dy;
                yVia = this.from.y + factor * dy;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dy;
                yVia = this.from.y + factor * dy;
              }
            }
            if (type === "discrete") {
              xVia = dx < factor * dy ? this.from.x : xVia;
            }
          } else if (Math.abs(this.from.x - this.to.x) > Math.abs(this.from.y - this.to.y)) {
            if (this.from.y >= this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dx;
                yVia = this.from.y - factor * dx;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dx;
                yVia = this.from.y - factor * dx;
              }
            } else if (this.from.y < this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dx;
                yVia = this.from.y + factor * dx;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dx;
                yVia = this.from.y + factor * dx;
              }
            }
            if (type === "discrete") {
              yVia = dy < factor * dx ? this.from.y : yVia;
            }
          }
        } else if (type === "straightCross") {
          if (Math.abs(this.from.x - this.to.x) <= Math.abs(this.from.y - this.to.y)) {
            // up - down
            xVia = this.from.x;
            if (this.from.y < this.to.y) {
              yVia = this.to.y - (1 - factor) * dy;
            } else {
              yVia = this.to.y + (1 - factor) * dy;
            }
          } else if (Math.abs(this.from.x - this.to.x) > Math.abs(this.from.y - this.to.y)) {
            // left - right
            if (this.from.x < this.to.x) {
              xVia = this.to.x - (1 - factor) * dx;
            } else {
              xVia = this.to.x + (1 - factor) * dx;
            }
            yVia = this.from.y;
          }
        } else if (type === 'horizontal') {
          if (this.from.x < this.to.x) {
            xVia = this.to.x - (1 - factor) * dx;
          } else {
            xVia = this.to.x + (1 - factor) * dx;
          }
          yVia = this.from.y;
        } else if (type === 'vertical') {
          xVia = this.from.x;
          if (this.from.y < this.to.y) {
            yVia = this.to.y - (1 - factor) * dy;
          } else {
            yVia = this.to.y + (1 - factor) * dy;
          }
        } else if (type === 'curvedCW') {
          dx = this.to.x - this.from.x;
          dy = this.from.y - this.to.y;
          var radius = Math.sqrt(dx * dx + dy * dy);
          var pi = Math.PI;

          var originalAngle = Math.atan2(dy, dx);
          var myAngle = (originalAngle + (factor * 0.5 + 0.5) * pi) % (2 * pi);

          xVia = this.from.x + (factor * 0.5 + 0.5) * radius * Math.sin(myAngle);
          yVia = this.from.y + (factor * 0.5 + 0.5) * radius * Math.cos(myAngle);
        } else if (type === 'curvedCCW') {
          dx = this.to.x - this.from.x;
          dy = this.from.y - this.to.y;
          var radius = Math.sqrt(dx * dx + dy * dy);
          var pi = Math.PI;

          var originalAngle = Math.atan2(dy, dx);
          var myAngle = (originalAngle + (-factor * 0.5 + 0.5) * pi) % (2 * pi);

          xVia = this.from.x + (factor * 0.5 + 0.5) * radius * Math.sin(myAngle);
          yVia = this.from.y + (factor * 0.5 + 0.5) * radius * Math.cos(myAngle);
        } else {
          // continuous
          if (Math.abs(this.from.x - this.to.x) <= Math.abs(this.from.y - this.to.y)) {
            if (this.from.y >= this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dy;
                yVia = this.from.y - factor * dy;
                xVia = this.to.x < xVia ? this.to.x : xVia;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dy;
                yVia = this.from.y - factor * dy;
                xVia = this.to.x > xVia ? this.to.x : xVia;
              }
            } else if (this.from.y < this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dy;
                yVia = this.from.y + factor * dy;
                xVia = this.to.x < xVia ? this.to.x : xVia;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dy;
                yVia = this.from.y + factor * dy;
                xVia = this.to.x > xVia ? this.to.x : xVia;
              }
            }
          } else if (Math.abs(this.from.x - this.to.x) > Math.abs(this.from.y - this.to.y)) {
            if (this.from.y >= this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dx;
                yVia = this.from.y - factor * dx;
                yVia = this.to.y > yVia ? this.to.y : yVia;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dx;
                yVia = this.from.y - factor * dx;
                yVia = this.to.y > yVia ? this.to.y : yVia;
              }
            } else if (this.from.y < this.to.y) {
              if (this.from.x <= this.to.x) {
                xVia = this.from.x + factor * dx;
                yVia = this.from.y + factor * dx;
                yVia = this.to.y < yVia ? this.to.y : yVia;
              } else if (this.from.x > this.to.x) {
                xVia = this.from.x - factor * dx;
                yVia = this.from.y + factor * dx;
                yVia = this.to.y < yVia ? this.to.y : yVia;
              }
            }
          }
        }
        return { x: xVia, y: yVia };
      }
    }, {
      key: '_findBorderPosition',
      value: function _findBorderPosition(nearNode, ctx) {
        var options = arguments.length <= 2 || arguments[2] === undefined ? {} : arguments[2];

        return this._findBorderPositionBezier(nearNode, ctx, options.via);
      }
    }, {
      key: '_getDistanceToEdge',
      value: function _getDistanceToEdge(x1, y1, x2, y2, x3, y3) {
        var viaNode = arguments.length <= 6 || arguments[6] === undefined ? this._getViaCoordinates() : arguments[6];
        // x3,y3 is the point
        return this._getDistanceToBezierEdge(x1, y1, x2, y2, x3, y3, viaNode);
      }

      /**
       * Combined function of pointOnLine and pointOnBezier. This gives the coordinates of a point on the line at a certain percentage of the way
       * @param percentage
       * @param viaNode
       * @returns {{x: number, y: number}}
       * @private
       */
    }, {
      key: 'getPoint',
      value: function getPoint(percentage) {
        var viaNode = arguments.length <= 1 || arguments[1] === undefined ? this._getViaCoordinates() : arguments[1];

        var t = percentage;
        var x = Math.pow(1 - t, 2) * this.fromPoint.x + 2 * t * (1 - t) * viaNode.x + Math.pow(t, 2) * this.toPoint.x;
        var y = Math.pow(1 - t, 2) * this.fromPoint.y + 2 * t * (1 - t) * viaNode.y + Math.pow(t, 2) * this.toPoint.y;

        return { x: x, y: y };
      }
    }]);

    return BezierEdgeStatic;
  })(_utilBezierEdgeBase2['default']);

  exports['default'] = BezierEdgeStatic;
  module.exports = exports['default'];

/***/ },
/* 88 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _utilEdgeBase = __webpack_require__(85);

  var _utilEdgeBase2 = _interopRequireDefault(_utilEdgeBase);

  var StraightEdge = (function (_EdgeBase) {
    _inherits(StraightEdge, _EdgeBase);

    function StraightEdge(options, body, labelModule) {
      _classCallCheck(this, StraightEdge);

      _get(Object.getPrototypeOf(StraightEdge.prototype), 'constructor', this).call(this, options, body, labelModule);
    }

    /**
     * Draw a line between two nodes
     * @param {CanvasRenderingContext2D} ctx
     * @private
     */

    _createClass(StraightEdge, [{
      key: '_line',
      value: function _line(ctx) {
        // draw a straight line
        ctx.beginPath();
        ctx.moveTo(this.fromPoint.x, this.fromPoint.y);
        ctx.lineTo(this.toPoint.x, this.toPoint.y);
        // draw shadow if enabled
        this.enableShadow(ctx);
        ctx.stroke();
        this.disableShadow(ctx);
      }
    }, {
      key: 'getViaNode',
      value: function getViaNode() {
        return undefined;
      }

      /**
       * Combined function of pointOnLine and pointOnBezier. This gives the coordinates of a point on the line at a certain percentage of the way
       * @param percentage
       * @param via
       * @returns {{x: number, y: number}}
       * @private
       */
    }, {
      key: 'getPoint',
      value: function getPoint(percentage) {
        return {
          x: (1 - percentage) * this.fromPoint.x + percentage * this.toPoint.x,
          y: (1 - percentage) * this.fromPoint.y + percentage * this.toPoint.y
        };
      }
    }, {
      key: '_findBorderPosition',
      value: function _findBorderPosition(nearNode, ctx) {
        var node1 = this.to;
        var node2 = this.from;
        if (nearNode.id === this.from.id) {
          node1 = this.from;
          node2 = this.to;
        }

        var angle = Math.atan2(node1.y - node2.y, node1.x - node2.x);
        var dx = node1.x - node2.x;
        var dy = node1.y - node2.y;
        var edgeSegmentLength = Math.sqrt(dx * dx + dy * dy);
        var toBorderDist = nearNode.distanceToBorder(ctx, angle);
        var toBorderPoint = (edgeSegmentLength - toBorderDist) / edgeSegmentLength;

        var borderPos = {};
        borderPos.x = (1 - toBorderPoint) * node2.x + toBorderPoint * node1.x;
        borderPos.y = (1 - toBorderPoint) * node2.y + toBorderPoint * node1.y;

        return borderPos;
      }
    }, {
      key: '_getDistanceToEdge',
      value: function _getDistanceToEdge(x1, y1, x2, y2, x3, y3) {
        // x3,y3 is the point
        return this._getDistanceToLine(x1, y1, x2, y2, x3, y3);
      }
    }]);

    return StraightEdge;
  })(_utilEdgeBase2['default']);

  exports['default'] = StraightEdge;
  module.exports = exports['default'];

/***/ },
/* 89 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _componentsPhysicsBarnesHutSolver = __webpack_require__(90);

  var _componentsPhysicsBarnesHutSolver2 = _interopRequireDefault(_componentsPhysicsBarnesHutSolver);

  var _componentsPhysicsRepulsionSolver = __webpack_require__(91);

  var _componentsPhysicsRepulsionSolver2 = _interopRequireDefault(_componentsPhysicsRepulsionSolver);

  var _componentsPhysicsHierarchicalRepulsionSolver = __webpack_require__(92);

  var _componentsPhysicsHierarchicalRepulsionSolver2 = _interopRequireDefault(_componentsPhysicsHierarchicalRepulsionSolver);

  var _componentsPhysicsSpringSolver = __webpack_require__(93);

  var _componentsPhysicsSpringSolver2 = _interopRequireDefault(_componentsPhysicsSpringSolver);

  var _componentsPhysicsHierarchicalSpringSolver = __webpack_require__(94);

  var _componentsPhysicsHierarchicalSpringSolver2 = _interopRequireDefault(_componentsPhysicsHierarchicalSpringSolver);

  var _componentsPhysicsCentralGravitySolver = __webpack_require__(95);

  var _componentsPhysicsCentralGravitySolver2 = _interopRequireDefault(_componentsPhysicsCentralGravitySolver);

  var _componentsPhysicsFA2BasedRepulsionSolver = __webpack_require__(96);

  var _componentsPhysicsFA2BasedRepulsionSolver2 = _interopRequireDefault(_componentsPhysicsFA2BasedRepulsionSolver);

  var _componentsPhysicsFA2BasedCentralGravitySolver = __webpack_require__(97);

  var _componentsPhysicsFA2BasedCentralGravitySolver2 = _interopRequireDefault(_componentsPhysicsFA2BasedCentralGravitySolver);

  var util = __webpack_require__(1);

  var PhysicsEngine = (function () {
    function PhysicsEngine(body) {
      _classCallCheck(this, PhysicsEngine);

      this.body = body;
      this.physicsBody = { physicsNodeIndices: [], physicsEdgeIndices: [], forces: {}, velocities: {} };

      this.physicsEnabled = true;
      this.simulationInterval = 1000 / 60;
      this.requiresTimeout = true;
      this.previousStates = {};
      this.referenceState = {};
      this.freezeCache = {};
      this.renderTimer = undefined;

      // parameters for the adaptive timestep
      this.adaptiveTimestep = false;
      this.adaptiveTimestepEnabled = false;
      this.adaptiveCounter = 0;
      this.adaptiveInterval = 3;

      this.stabilized = false;
      this.startedStabilization = false;
      this.stabilizationIterations = 0;
      this.ready = false; // will be set to true if the stabilize

      // default options
      this.options = {};
      this.defaultOptions = {
        enabled: true,
        barnesHut: {
          theta: 0.5,
          gravitationalConstant: -2000,
          centralGravity: 0.3,
          springLength: 95,
          springConstant: 0.04,
          damping: 0.09,
          avoidOverlap: 0
        },
        forceAtlas2Based: {
          theta: 0.5,
          gravitationalConstant: -50,
          centralGravity: 0.01,
          springConstant: 0.08,
          springLength: 100,
          damping: 0.4,
          avoidOverlap: 0
        },
        repulsion: {
          centralGravity: 0.2,
          springLength: 200,
          springConstant: 0.05,
          nodeDistance: 100,
          damping: 0.09,
          avoidOverlap: 0
        },
        hierarchicalRepulsion: {
          centralGravity: 0.0,
          springLength: 100,
          springConstant: 0.01,
          nodeDistance: 120,
          damping: 0.09
        },
        maxVelocity: 50,
        minVelocity: 0.75, // px/s
        solver: 'barnesHut',
        stabilization: {
          enabled: true,
          iterations: 1000, // maximum number of iteration to stabilize
          updateInterval: 50,
          onlyDynamicEdges: false,
          fit: true
        },
        timestep: 0.5,
        adaptiveTimestep: true
      };
      util.extend(this.options, this.defaultOptions);
      this.timestep = 0.5;
      this.layoutFailed = false;

      this.bindEventListeners();
    }

    _createClass(PhysicsEngine, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this = this;

        this.body.emitter.on('initPhysics', function () {
          _this.initPhysics();
        });
        this.body.emitter.on('_layoutFailed', function () {
          _this.layoutFailed = true;
        });
        this.body.emitter.on('resetPhysics', function () {
          _this.stopSimulation();_this.ready = false;
        });
        this.body.emitter.on('disablePhysics', function () {
          _this.physicsEnabled = false;_this.stopSimulation();
        });
        this.body.emitter.on('restorePhysics', function () {
          _this.setOptions(_this.options);
          if (_this.ready === true) {
            _this.startSimulation();
          }
        });
        this.body.emitter.on('startSimulation', function () {
          if (_this.ready === true) {
            _this.startSimulation();
          }
        });
        this.body.emitter.on('stopSimulation', function () {
          _this.stopSimulation();
        });
        this.body.emitter.on('destroy', function () {
          _this.stopSimulation(false);
          _this.body.emitter.off();
        });
        // this event will trigger a rebuilding of the cache everything. Used when nodes or edges have been added or removed.
        this.body.emitter.on("_dataChanged", function () {
          // update shortcut lists
          _this.updatePhysicsData();
        });

        // debug: show forces
        // this.body.emitter.on("afterDrawing", (ctx) => {this._drawForces(ctx);});
      }

      /**
       * set the physics options
       * @param options
       */
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          if (options === false) {
            this.options.enabled = false;
            this.physicsEnabled = false;
            this.stopSimulation();
          } else {
            this.physicsEnabled = true;
            util.selectiveNotDeepExtend(['stabilization'], this.options, options);
            util.mergeOptions(this.options, options, 'stabilization');

            if (options.enabled === undefined) {
              this.options.enabled = true;
            }

            if (this.options.enabled === false) {
              this.physicsEnabled = false;
              this.stopSimulation();
            }

            // set the timestep
            this.timestep = this.options.timestep;
          }
        }
        this.init();
      }

      /**
       * configure the engine.
       */
    }, {
      key: 'init',
      value: function init() {
        var options;
        if (this.options.solver === 'forceAtlas2Based') {
          options = this.options.forceAtlas2Based;
          this.nodesSolver = new _componentsPhysicsFA2BasedRepulsionSolver2['default'](this.body, this.physicsBody, options);
          this.edgesSolver = new _componentsPhysicsSpringSolver2['default'](this.body, this.physicsBody, options);
          this.gravitySolver = new _componentsPhysicsFA2BasedCentralGravitySolver2['default'](this.body, this.physicsBody, options);
        } else if (this.options.solver === 'repulsion') {
          options = this.options.repulsion;
          this.nodesSolver = new _componentsPhysicsRepulsionSolver2['default'](this.body, this.physicsBody, options);
          this.edgesSolver = new _componentsPhysicsSpringSolver2['default'](this.body, this.physicsBody, options);
          this.gravitySolver = new _componentsPhysicsCentralGravitySolver2['default'](this.body, this.physicsBody, options);
        } else if (this.options.solver === 'hierarchicalRepulsion') {
          options = this.options.hierarchicalRepulsion;
          this.nodesSolver = new _componentsPhysicsHierarchicalRepulsionSolver2['default'](this.body, this.physicsBody, options);
          this.edgesSolver = new _componentsPhysicsHierarchicalSpringSolver2['default'](this.body, this.physicsBody, options);
          this.gravitySolver = new _componentsPhysicsCentralGravitySolver2['default'](this.body, this.physicsBody, options);
        } else {
          // barnesHut
          options = this.options.barnesHut;
          this.nodesSolver = new _componentsPhysicsBarnesHutSolver2['default'](this.body, this.physicsBody, options);
          this.edgesSolver = new _componentsPhysicsSpringSolver2['default'](this.body, this.physicsBody, options);
          this.gravitySolver = new _componentsPhysicsCentralGravitySolver2['default'](this.body, this.physicsBody, options);
        }

        this.modelOptions = options;
      }

      /**
       * initialize the engine
       */
    }, {
      key: 'initPhysics',
      value: function initPhysics() {
        if (this.physicsEnabled === true && this.options.enabled === true) {
          if (this.options.stabilization.enabled === true) {
            this.stabilize();
          } else {
            this.stabilized = false;
            this.ready = true;
            this.body.emitter.emit('fit', {}, this.layoutFailed); // if the layout failed, we use the approximation for the zoom
            this.startSimulation();
          }
        } else {
          this.ready = true;
          this.body.emitter.emit('fit');
        }
      }

      /**
       * Start the simulation
       */
    }, {
      key: 'startSimulation',
      value: function startSimulation() {
        if (this.physicsEnabled === true && this.options.enabled === true) {
          this.stabilized = false;

          // when visible, adaptivity is disabled.
          this.adaptiveTimestep = false;

          // this sets the width of all nodes initially which could be required for the avoidOverlap
          this.body.emitter.emit("_resizeNodes");
          if (this.viewFunction === undefined) {
            this.viewFunction = this.simulationStep.bind(this);
            this.body.emitter.on('initRedraw', this.viewFunction);
            this.body.emitter.emit('_startRendering');
          }
        } else {
          this.body.emitter.emit('_redraw');
        }
      }

      /**
       * Stop the simulation, force stabilization.
       */
    }, {
      key: 'stopSimulation',
      value: function stopSimulation() {
        var emit = arguments.length <= 0 || arguments[0] === undefined ? true : arguments[0];

        this.stabilized = true;
        if (emit === true) {
          this._emitStabilized();
        }
        if (this.viewFunction !== undefined) {
          this.body.emitter.off('initRedraw', this.viewFunction);
          this.viewFunction = undefined;
          if (emit === true) {
            this.body.emitter.emit('_stopRendering');
          }
        }
      }

      /**
       * The viewFunction inserts this step into each render loop. It calls the physics tick and handles the cleanup at stabilized.
       *
       */
    }, {
      key: 'simulationStep',
      value: function simulationStep() {
        // check if the physics have settled
        var startTime = Date.now();
        this.physicsTick();
        var physicsTime = Date.now() - startTime;

        // run double speed if it is a little graph
        if ((physicsTime < 0.4 * this.simulationInterval || this.runDoubleSpeed === true) && this.stabilized === false) {
          this.physicsTick();

          // this makes sure there is no jitter. The decision is taken once to run it at double speed.
          this.runDoubleSpeed = true;
        }

        if (this.stabilized === true) {
          this.stopSimulation();
        }
      }

      /**
       * trigger the stabilized event.
       * @private
       */
    }, {
      key: '_emitStabilized',
      value: function _emitStabilized() {
        var _this2 = this;

        var amountOfIterations = arguments.length <= 0 || arguments[0] === undefined ? this.stabilizationIterations : arguments[0];

        if (this.stabilizationIterations > 1 || this.startedStabilization === true) {
          setTimeout(function () {
            _this2.body.emitter.emit('stabilized', { iterations: amountOfIterations });
            _this2.startedStabilization = false;
            _this2.stabilizationIterations = 0;
          }, 0);
        }
      }

      /**
       * A single simulation step (or 'tick') in the physics simulation
       *
       * @private
       */
    }, {
      key: 'physicsTick',
      value: function physicsTick() {
        // this is here to ensure that there is no start event when the network is already stable.
        if (this.startedStabilization === false) {
          this.body.emitter.emit('startStabilizing');
          this.startedStabilization = true;
        }

        if (this.stabilized === false) {
          // adaptivity means the timestep adapts to the situation, only applicable for stabilization
          if (this.adaptiveTimestep === true && this.adaptiveTimestepEnabled === true) {
            // this is the factor for increasing the timestep on success.
            var factor = 1.2;

            // we assume the adaptive interval is
            if (this.adaptiveCounter % this.adaptiveInterval === 0) {
              // we leave the timestep stable for "interval" iterations.
              // first the big step and revert. Revert saves the reference state.
              this.timestep = 2 * this.timestep;
              this.calculateForces();
              this.moveNodes();
              this.revert();

              // now the normal step. Since this is the last step, it is the more stable one and we will take this.
              this.timestep = 0.5 * this.timestep;

              // since it's half the step, we do it twice.
              this.calculateForces();
              this.moveNodes();
              this.calculateForces();
              this.moveNodes();

              // we compare the two steps. if it is acceptable we double the step.
              if (this._evaluateStepQuality() === true) {
                this.timestep = factor * this.timestep;
              } else {
                // if not, we decrease the step to a minimum of the options timestep.
                // if the decreased timestep is smaller than the options step, we do not reset the counter
                // we assume that the options timestep is stable enough.
                if (this.timestep / factor < this.options.timestep) {
                  this.timestep = this.options.timestep;
                } else {
                  // if the timestep was larger than 2 times the option one we check the adaptivity again to ensure
                  // that large instabilities do not form.
                  this.adaptiveCounter = -1; // check again next iteration
                  this.timestep = Math.max(this.options.timestep, this.timestep / factor);
                }
              }
            } else {
              // normal step, keeping timestep constant
              this.calculateForces();
              this.moveNodes();
            }

            // increment the counter
            this.adaptiveCounter += 1;
          } else {
            // case for the static timestep, we reset it to the one in options and take a normal step.
            this.timestep = this.options.timestep;
            this.calculateForces();
            this.moveNodes();
          }

          // determine if the network has stabilzied
          if (this.stabilized === true) {
            this.revert();
          }

          this.stabilizationIterations++;
        }
      }

      /**
       * Nodes and edges can have the physics toggles on or off. A collection of indices is created here so we can skip the check all the time.
       *
       * @private
       */
    }, {
      key: 'updatePhysicsData',
      value: function updatePhysicsData() {
        this.physicsBody.forces = {};
        this.physicsBody.physicsNodeIndices = [];
        this.physicsBody.physicsEdgeIndices = [];
        var nodes = this.body.nodes;
        var edges = this.body.edges;

        // get node indices for physics
        for (var nodeId in nodes) {
          if (nodes.hasOwnProperty(nodeId)) {
            if (nodes[nodeId].options.physics === true) {
              this.physicsBody.physicsNodeIndices.push(nodes[nodeId].id);
            }
          }
        }

        // get edge indices for physics
        for (var edgeId in edges) {
          if (edges.hasOwnProperty(edgeId)) {
            if (edges[edgeId].options.physics === true) {
              this.physicsBody.physicsEdgeIndices.push(edges[edgeId].id);
            }
          }
        }

        // get the velocity and the forces vector
        for (var i = 0; i < this.physicsBody.physicsNodeIndices.length; i++) {
          var nodeId = this.physicsBody.physicsNodeIndices[i];
          this.physicsBody.forces[nodeId] = { x: 0, y: 0 };

          // forces can be reset because they are recalculated. Velocities have to persist.
          if (this.physicsBody.velocities[nodeId] === undefined) {
            this.physicsBody.velocities[nodeId] = { x: 0, y: 0 };
          }
        }

        // clean deleted nodes from the velocity vector
        for (var nodeId in this.physicsBody.velocities) {
          if (nodes[nodeId] === undefined) {
            delete this.physicsBody.velocities[nodeId];
          }
        }
      }

      /**
       * Revert the simulation one step. This is done so after stabilization, every new start of the simulation will also say stabilized.
       */
    }, {
      key: 'revert',
      value: function revert() {
        var nodeIds = Object.keys(this.previousStates);
        var nodes = this.body.nodes;
        var velocities = this.physicsBody.velocities;
        this.referenceState = {};

        for (var i = 0; i < nodeIds.length; i++) {
          var nodeId = nodeIds[i];
          if (nodes[nodeId] !== undefined) {
            if (nodes[nodeId].options.physics === true) {
              this.referenceState[nodeId] = {
                positions: { x: nodes[nodeId].x, y: nodes[nodeId].y }
              };
              velocities[nodeId].x = this.previousStates[nodeId].vx;
              velocities[nodeId].y = this.previousStates[nodeId].vy;
              nodes[nodeId].x = this.previousStates[nodeId].x;
              nodes[nodeId].y = this.previousStates[nodeId].y;
            }
          } else {
            delete this.previousStates[nodeId];
          }
        }
      }

      /**
       * This compares the reference state to the current state
       */
    }, {
      key: '_evaluateStepQuality',
      value: function _evaluateStepQuality() {
        var dx = undefined,
            dy = undefined,
            dpos = undefined;
        var nodes = this.body.nodes;
        var reference = this.referenceState;
        var posThreshold = 0.3;

        for (var nodeId in this.referenceState) {
          if (this.referenceState.hasOwnProperty(nodeId) && nodes[nodeId] !== undefined) {
            dx = nodes[nodeId].x - reference[nodeId].positions.x;
            dy = nodes[nodeId].y - reference[nodeId].positions.y;

            dpos = Math.sqrt(Math.pow(dx, 2) + Math.pow(dy, 2));

            if (dpos > posThreshold) {
              return false;
            }
          }
        }
        return true;
      }

      /**
       * move the nodes one timestep and check if they are stabilized
       * @returns {boolean}
       */
    }, {
      key: 'moveNodes',
      value: function moveNodes() {
        var nodeIndices = this.physicsBody.physicsNodeIndices;
        var maxVelocity = this.options.maxVelocity ? this.options.maxVelocity : 1e9;
        var maxNodeVelocity = 0;
        var averageNodeVelocity = 0;

        // the velocity threshold (energy in the system) for the adaptivity toggle
        var velocityAdaptiveThreshold = 5;

        for (var i = 0; i < nodeIndices.length; i++) {
          var nodeId = nodeIndices[i];
          var nodeVelocity = this._performStep(nodeId, maxVelocity);
          // stabilized is true if stabilized is true and velocity is smaller than vmin --> all nodes must be stabilized
          maxNodeVelocity = Math.max(maxNodeVelocity, nodeVelocity);
          averageNodeVelocity += nodeVelocity;
        }

        // evaluating the stabilized and adaptiveTimestepEnabled conditions
        this.adaptiveTimestepEnabled = averageNodeVelocity / nodeIndices.length < velocityAdaptiveThreshold;
        this.stabilized = maxNodeVelocity < this.options.minVelocity;
      }

      /**
       * Perform the actual step
       *
       * @param nodeId
       * @param maxVelocity
       * @returns {number}
       * @private
       */
    }, {
      key: '_performStep',
      value: function _performStep(nodeId, maxVelocity) {
        var node = this.body.nodes[nodeId];
        var timestep = this.timestep;
        var forces = this.physicsBody.forces;
        var velocities = this.physicsBody.velocities;

        // store the state so we can revert
        this.previousStates[nodeId] = { x: node.x, y: node.y, vx: velocities[nodeId].x, vy: velocities[nodeId].y };

        if (node.options.fixed.x === false) {
          var dx = this.modelOptions.damping * velocities[nodeId].x; // damping force
          var ax = (forces[nodeId].x - dx) / node.options.mass; // acceleration
          velocities[nodeId].x += ax * timestep; // velocity
          velocities[nodeId].x = Math.abs(velocities[nodeId].x) > maxVelocity ? velocities[nodeId].x > 0 ? maxVelocity : -maxVelocity : velocities[nodeId].x;
          node.x += velocities[nodeId].x * timestep; // position
        } else {
            forces[nodeId].x = 0;
            velocities[nodeId].x = 0;
          }

        if (node.options.fixed.y === false) {
          var dy = this.modelOptions.damping * velocities[nodeId].y; // damping force
          var ay = (forces[nodeId].y - dy) / node.options.mass; // acceleration
          velocities[nodeId].y += ay * timestep; // velocity
          velocities[nodeId].y = Math.abs(velocities[nodeId].y) > maxVelocity ? velocities[nodeId].y > 0 ? maxVelocity : -maxVelocity : velocities[nodeId].y;
          node.y += velocities[nodeId].y * timestep; // position
        } else {
            forces[nodeId].y = 0;
            velocities[nodeId].y = 0;
          }

        var totalVelocity = Math.sqrt(Math.pow(velocities[nodeId].x, 2) + Math.pow(velocities[nodeId].y, 2));
        return totalVelocity;
      }

      /**
       * calculate the forces for one physics iteration.
       */
    }, {
      key: 'calculateForces',
      value: function calculateForces() {
        this.gravitySolver.solve();
        this.nodesSolver.solve();
        this.edgesSolver.solve();
      }

      /**
       * When initializing and stabilizing, we can freeze nodes with a predefined position. This greatly speeds up stabilization
       * because only the supportnodes for the smoothCurves have to settle.
       *
       * @private
       */
    }, {
      key: '_freezeNodes',
      value: function _freezeNodes() {
        var nodes = this.body.nodes;
        for (var id in nodes) {
          if (nodes.hasOwnProperty(id)) {
            if (nodes[id].x && nodes[id].y) {
              this.freezeCache[id] = { x: nodes[id].options.fixed.x, y: nodes[id].options.fixed.y };
              nodes[id].options.fixed.x = true;
              nodes[id].options.fixed.y = true;
            }
          }
        }
      }

      /**
       * Unfreezes the nodes that have been frozen by _freezeDefinedNodes.
       *
       * @private
       */
    }, {
      key: '_restoreFrozenNodes',
      value: function _restoreFrozenNodes() {
        var nodes = this.body.nodes;
        for (var id in nodes) {
          if (nodes.hasOwnProperty(id)) {
            if (this.freezeCache[id] !== undefined) {
              nodes[id].options.fixed.x = this.freezeCache[id].x;
              nodes[id].options.fixed.y = this.freezeCache[id].y;
            }
          }
        }
        this.freezeCache = {};
      }

      /**
       * Find a stable position for all nodes
       */
    }, {
      key: 'stabilize',
      value: function stabilize() {
        var _this3 = this;

        var iterations = arguments.length <= 0 || arguments[0] === undefined ? this.options.stabilization.iterations : arguments[0];

        if (typeof iterations !== 'number') {
          console.log('The stabilize method needs a numeric amount of iterations. Switching to default: ', this.options.stabilization.iterations);
          iterations = this.options.stabilization.iterations;
        }

        if (this.physicsBody.physicsNodeIndices.length === 0) {
          this.ready = true;
          return;
        }

        // enable adaptive timesteps
        this.adaptiveTimestep = true && this.options.adaptiveTimestep;

        // this sets the width of all nodes initially which could be required for the avoidOverlap
        this.body.emitter.emit("_resizeNodes");

        // stop the render loop
        this.stopSimulation();

        // set stabilze to false
        this.stabilized = false;

        // block redraw requests
        this.body.emitter.emit('_blockRedraw');
        this.targetIterations = iterations;

        // start the stabilization
        if (this.options.stabilization.onlyDynamicEdges === true) {
          this._freezeNodes();
        }
        this.stabilizationIterations = 0;

        setTimeout(function () {
          return _this3._stabilizationBatch();
        }, 0);
      }

      /**
       * One batch of stabilization
       * @private
       */
    }, {
      key: '_stabilizationBatch',
      value: function _stabilizationBatch() {
        // this is here to ensure that there is at least one start event.
        if (this.startedStabilization === false) {
          this.body.emitter.emit('startStabilizing');
          this.startedStabilization = true;
        }

        var count = 0;
        while (this.stabilized === false && count < this.options.stabilization.updateInterval && this.stabilizationIterations < this.targetIterations) {
          this.physicsTick();
          count++;
        }

        if (this.stabilized === false && this.stabilizationIterations < this.targetIterations) {
          this.body.emitter.emit('stabilizationProgress', { iterations: this.stabilizationIterations, total: this.targetIterations });
          setTimeout(this._stabilizationBatch.bind(this), 0);
        } else {
          this._finalizeStabilization();
        }
      }

      /**
       * Wrap up the stabilization, fit and emit the events.
       * @private
       */
    }, {
      key: '_finalizeStabilization',
      value: function _finalizeStabilization() {
        this.body.emitter.emit('_allowRedraw');
        if (this.options.stabilization.fit === true) {
          this.body.emitter.emit('fit');
        }

        if (this.options.stabilization.onlyDynamicEdges === true) {
          this._restoreFrozenNodes();
        }

        this.body.emitter.emit('stabilizationIterationsDone');
        this.body.emitter.emit('_requestRedraw');

        if (this.stabilized === true) {
          this._emitStabilized();
        } else {
          this.startSimulation();
        }

        this.ready = true;
      }
    }, {
      key: '_drawForces',
      value: function _drawForces(ctx) {
        for (var i = 0; i < this.physicsBody.physicsNodeIndices.length; i++) {
          var node = this.body.nodes[this.physicsBody.physicsNodeIndices[i]];
          var force = this.physicsBody.forces[this.physicsBody.physicsNodeIndices[i]];
          var factor = 20;
          var colorFactor = 0.03;
          var forceSize = Math.sqrt(Math.pow(force.x, 2) + Math.pow(force.x, 2));

          var size = Math.min(Math.max(5, forceSize), 15);
          var arrowSize = 3 * size;

          var color = util.HSVToHex((180 - Math.min(1, Math.max(0, colorFactor * forceSize)) * 180) / 360, 1, 1);

          ctx.lineWidth = size;
          ctx.strokeStyle = color;
          ctx.beginPath();
          ctx.moveTo(node.x, node.y);
          ctx.lineTo(node.x + factor * force.x, node.y + factor * force.y);
          ctx.stroke();

          var angle = Math.atan2(force.y, force.x);
          ctx.fillStyle = color;
          ctx.arrow(node.x + factor * force.x + Math.cos(angle) * arrowSize, node.y + factor * force.y + Math.sin(angle) * arrowSize, angle, arrowSize);
          ctx.fill();
        }
      }
    }]);

    return PhysicsEngine;
  })();

  exports['default'] = PhysicsEngine;
  module.exports = exports['default'];

/***/ },
/* 90 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var BarnesHutSolver = (function () {
    function BarnesHutSolver(body, physicsBody, options) {
      _classCallCheck(this, BarnesHutSolver);

      this.body = body;
      this.physicsBody = physicsBody;
      this.barnesHutTree;
      this.setOptions(options);
      this.randomSeed = 5;

      // debug: show grid
      //this.body.emitter.on("afterDrawing", (ctx) => {this._debug(ctx,'#ff0000')})
    }

    _createClass(BarnesHutSolver, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
        this.thetaInversed = 1 / this.options.theta;
        this.overlapAvoidanceFactor = 1 - Math.max(0, Math.min(1, this.options.avoidOverlap)); // if 1 then min distance = 0.5, if 0.5 then min distance = 0.5 + 0.5*node.shape.radius
      }
    }, {
      key: "seededRandom",
      value: function seededRandom() {
        var x = Math.sin(this.randomSeed++) * 10000;
        return x - Math.floor(x);
      }

      /**
       * This function calculates the forces the nodes apply on each other based on a gravitational model.
       * The Barnes Hut method is used to speed up this N-body simulation.
       *
       * @private
       */
    }, {
      key: "solve",
      value: function solve() {
        if (this.options.gravitationalConstant !== 0 && this.physicsBody.physicsNodeIndices.length > 0) {
          var node = undefined;
          var nodes = this.body.nodes;
          var nodeIndices = this.physicsBody.physicsNodeIndices;
          var nodeCount = nodeIndices.length;

          // create the tree
          var barnesHutTree = this._formBarnesHutTree(nodes, nodeIndices);

          // for debugging
          this.barnesHutTree = barnesHutTree;

          // place the nodes one by one recursively
          for (var i = 0; i < nodeCount; i++) {
            node = nodes[nodeIndices[i]];
            if (node.options.mass > 0) {
              // starting with root is irrelevant, it never passes the BarnesHutSolver condition
              this._getForceContribution(barnesHutTree.root.children.NW, node);
              this._getForceContribution(barnesHutTree.root.children.NE, node);
              this._getForceContribution(barnesHutTree.root.children.SW, node);
              this._getForceContribution(barnesHutTree.root.children.SE, node);
            }
          }
        }
      }

      /**
       * This function traverses the barnesHutTree. It checks when it can approximate distant nodes with their center of mass.
       * If a region contains a single node, we check if it is not itself, then we apply the force.
       *
       * @param parentBranch
       * @param node
       * @private
       */
    }, {
      key: "_getForceContribution",
      value: function _getForceContribution(parentBranch, node) {
        // we get no force contribution from an empty region
        if (parentBranch.childrenCount > 0) {
          var dx = undefined,
              dy = undefined,
              distance = undefined;

          // get the distance from the center of mass to the node.
          dx = parentBranch.centerOfMass.x - node.x;
          dy = parentBranch.centerOfMass.y - node.y;
          distance = Math.sqrt(dx * dx + dy * dy);

          // BarnesHutSolver condition
          // original condition : s/d < theta = passed  ===  d/s > 1/theta = passed
          // calcSize = 1/s --> d * 1/s > 1/theta = passed
          if (distance * parentBranch.calcSize > this.thetaInversed) {
            this._calculateForces(distance, dx, dy, node, parentBranch);
          } else {
            // Did not pass the condition, go into children if available
            if (parentBranch.childrenCount === 4) {
              this._getForceContribution(parentBranch.children.NW, node);
              this._getForceContribution(parentBranch.children.NE, node);
              this._getForceContribution(parentBranch.children.SW, node);
              this._getForceContribution(parentBranch.children.SE, node);
            } else {
              // parentBranch must have only one node, if it was empty we wouldnt be here
              if (parentBranch.children.data.id != node.id) {
                // if it is not self
                this._calculateForces(distance, dx, dy, node, parentBranch);
              }
            }
          }
        }
      }

      /**
       * Calculate the forces based on the distance.
       *
       * @param distance
       * @param dx
       * @param dy
       * @param node
       * @param parentBranch
       * @private
       */
    }, {
      key: "_calculateForces",
      value: function _calculateForces(distance, dx, dy, node, parentBranch) {
        if (distance === 0) {
          distance = 0.1;
          dx = distance;
        }

        if (this.overlapAvoidanceFactor < 1) {
          distance = Math.max(0.1 + this.overlapAvoidanceFactor * node.shape.radius, distance - node.shape.radius);
        }

        // the dividing by the distance cubed instead of squared allows us to get the fx and fy components without sines and cosines
        // it is shorthand for gravityforce with distance squared and fx = dx/distance * gravityForce
        var gravityForce = this.options.gravitationalConstant * parentBranch.mass * node.options.mass / Math.pow(distance, 3);
        var fx = dx * gravityForce;
        var fy = dy * gravityForce;

        this.physicsBody.forces[node.id].x += fx;
        this.physicsBody.forces[node.id].y += fy;
      }

      /**
       * This function constructs the barnesHut tree recursively. It creates the root, splits it and starts placing the nodes.
       *
       * @param nodes
       * @param nodeIndices
       * @private
       */
    }, {
      key: "_formBarnesHutTree",
      value: function _formBarnesHutTree(nodes, nodeIndices) {
        var node = undefined;
        var nodeCount = nodeIndices.length;

        var minX = nodes[nodeIndices[0]].x;
        var minY = nodes[nodeIndices[0]].y;
        var maxX = nodes[nodeIndices[0]].x;
        var maxY = nodes[nodeIndices[0]].y;

        // get the range of the nodes
        for (var i = 1; i < nodeCount; i++) {
          var x = nodes[nodeIndices[i]].x;
          var y = nodes[nodeIndices[i]].y;
          if (nodes[nodeIndices[i]].options.mass > 0) {
            if (x < minX) {
              minX = x;
            }
            if (x > maxX) {
              maxX = x;
            }
            if (y < minY) {
              minY = y;
            }
            if (y > maxY) {
              maxY = y;
            }
          }
        }
        // make the range a square
        var sizeDiff = Math.abs(maxX - minX) - Math.abs(maxY - minY); // difference between X and Y
        if (sizeDiff > 0) {
          minY -= 0.5 * sizeDiff;
          maxY += 0.5 * sizeDiff;
        } // xSize > ySize
        else {
            minX += 0.5 * sizeDiff;
            maxX -= 0.5 * sizeDiff;
          } // xSize < ySize

        var minimumTreeSize = 1e-5;
        var rootSize = Math.max(minimumTreeSize, Math.abs(maxX - minX));
        var halfRootSize = 0.5 * rootSize;
        var centerX = 0.5 * (minX + maxX),
            centerY = 0.5 * (minY + maxY);

        // construct the barnesHutTree
        var barnesHutTree = {
          root: {
            centerOfMass: { x: 0, y: 0 },
            mass: 0,
            range: {
              minX: centerX - halfRootSize, maxX: centerX + halfRootSize,
              minY: centerY - halfRootSize, maxY: centerY + halfRootSize
            },
            size: rootSize,
            calcSize: 1 / rootSize,
            children: { data: null },
            maxWidth: 0,
            level: 0,
            childrenCount: 4
          }
        };
        this._splitBranch(barnesHutTree.root);

        // place the nodes one by one recursively
        for (var i = 0; i < nodeCount; i++) {
          node = nodes[nodeIndices[i]];
          if (node.options.mass > 0) {
            this._placeInTree(barnesHutTree.root, node);
          }
        }

        // make global
        return barnesHutTree;
      }

      /**
       * this updates the mass of a branch. this is increased by adding a node.
       *
       * @param parentBranch
       * @param node
       * @private
       */
    }, {
      key: "_updateBranchMass",
      value: function _updateBranchMass(parentBranch, node) {
        var totalMass = parentBranch.mass + node.options.mass;
        var totalMassInv = 1 / totalMass;

        parentBranch.centerOfMass.x = parentBranch.centerOfMass.x * parentBranch.mass + node.x * node.options.mass;
        parentBranch.centerOfMass.x *= totalMassInv;

        parentBranch.centerOfMass.y = parentBranch.centerOfMass.y * parentBranch.mass + node.y * node.options.mass;
        parentBranch.centerOfMass.y *= totalMassInv;

        parentBranch.mass = totalMass;
        var biggestSize = Math.max(Math.max(node.height, node.radius), node.width);
        parentBranch.maxWidth = parentBranch.maxWidth < biggestSize ? biggestSize : parentBranch.maxWidth;
      }

      /**
       * determine in which branch the node will be placed.
       *
       * @param parentBranch
       * @param node
       * @param skipMassUpdate
       * @private
       */
    }, {
      key: "_placeInTree",
      value: function _placeInTree(parentBranch, node, skipMassUpdate) {
        if (skipMassUpdate != true || skipMassUpdate === undefined) {
          // update the mass of the branch.
          this._updateBranchMass(parentBranch, node);
        }

        if (parentBranch.children.NW.range.maxX > node.x) {
          // in NW or SW
          if (parentBranch.children.NW.range.maxY > node.y) {
            // in NW
            this._placeInRegion(parentBranch, node, "NW");
          } else {
            // in SW
            this._placeInRegion(parentBranch, node, "SW");
          }
        } else {
          // in NE or SE
          if (parentBranch.children.NW.range.maxY > node.y) {
            // in NE
            this._placeInRegion(parentBranch, node, "NE");
          } else {
            // in SE
            this._placeInRegion(parentBranch, node, "SE");
          }
        }
      }

      /**
       * actually place the node in a region (or branch)
       *
       * @param parentBranch
       * @param node
       * @param region
       * @private
       */
    }, {
      key: "_placeInRegion",
      value: function _placeInRegion(parentBranch, node, region) {
        switch (parentBranch.children[region].childrenCount) {
          case 0:
            // place node here
            parentBranch.children[region].children.data = node;
            parentBranch.children[region].childrenCount = 1;
            this._updateBranchMass(parentBranch.children[region], node);
            break;
          case 1:
            // convert into children
            // if there are two nodes exactly overlapping (on init, on opening of cluster etc.)
            // we move one node a little bit and we do not put it in the tree.
            if (parentBranch.children[region].children.data.x === node.x && parentBranch.children[region].children.data.y === node.y) {
              node.x += this.seededRandom();
              node.y += this.seededRandom();
            } else {
              this._splitBranch(parentBranch.children[region]);
              this._placeInTree(parentBranch.children[region], node);
            }
            break;
          case 4:
            // place in branch
            this._placeInTree(parentBranch.children[region], node);
            break;
        }
      }

      /**
       * this function splits a branch into 4 sub branches. If the branch contained a node, we place it in the subbranch
       * after the split is complete.
       *
       * @param parentBranch
       * @private
       */
    }, {
      key: "_splitBranch",
      value: function _splitBranch(parentBranch) {
        // if the branch is shaded with a node, replace the node in the new subset.
        var containedNode = null;
        if (parentBranch.childrenCount === 1) {
          containedNode = parentBranch.children.data;
          parentBranch.mass = 0;
          parentBranch.centerOfMass.x = 0;
          parentBranch.centerOfMass.y = 0;
        }
        parentBranch.childrenCount = 4;
        parentBranch.children.data = null;
        this._insertRegion(parentBranch, "NW");
        this._insertRegion(parentBranch, "NE");
        this._insertRegion(parentBranch, "SW");
        this._insertRegion(parentBranch, "SE");

        if (containedNode != null) {
          this._placeInTree(parentBranch, containedNode);
        }
      }

      /**
       * This function subdivides the region into four new segments.
       * Specifically, this inserts a single new segment.
       * It fills the children section of the parentBranch
       *
       * @param parentBranch
       * @param region
       * @param parentRange
       * @private
       */
    }, {
      key: "_insertRegion",
      value: function _insertRegion(parentBranch, region) {
        var minX = undefined,
            maxX = undefined,
            minY = undefined,
            maxY = undefined;
        var childSize = 0.5 * parentBranch.size;
        switch (region) {
          case "NW":
            minX = parentBranch.range.minX;
            maxX = parentBranch.range.minX + childSize;
            minY = parentBranch.range.minY;
            maxY = parentBranch.range.minY + childSize;
            break;
          case "NE":
            minX = parentBranch.range.minX + childSize;
            maxX = parentBranch.range.maxX;
            minY = parentBranch.range.minY;
            maxY = parentBranch.range.minY + childSize;
            break;
          case "SW":
            minX = parentBranch.range.minX;
            maxX = parentBranch.range.minX + childSize;
            minY = parentBranch.range.minY + childSize;
            maxY = parentBranch.range.maxY;
            break;
          case "SE":
            minX = parentBranch.range.minX + childSize;
            maxX = parentBranch.range.maxX;
            minY = parentBranch.range.minY + childSize;
            maxY = parentBranch.range.maxY;
            break;
        }

        parentBranch.children[region] = {
          centerOfMass: { x: 0, y: 0 },
          mass: 0,
          range: { minX: minX, maxX: maxX, minY: minY, maxY: maxY },
          size: 0.5 * parentBranch.size,
          calcSize: 2 * parentBranch.calcSize,
          children: { data: null },
          maxWidth: 0,
          level: parentBranch.level + 1,
          childrenCount: 0
        };
      }

      //---------------------------  DEBUGGING BELOW  ---------------------------//

      /**
       * This function is for debugging purposed, it draws the tree.
       *
       * @param ctx
       * @param color
       * @private
       */
    }, {
      key: "_debug",
      value: function _debug(ctx, color) {
        if (this.barnesHutTree !== undefined) {

          ctx.lineWidth = 1;

          this._drawBranch(this.barnesHutTree.root, ctx, color);
        }
      }

      /**
       * This function is for debugging purposes. It draws the branches recursively.
       *
       * @param branch
       * @param ctx
       * @param color
       * @private
       */
    }, {
      key: "_drawBranch",
      value: function _drawBranch(branch, ctx, color) {
        if (color === undefined) {
          color = "#FF0000";
        }

        if (branch.childrenCount === 4) {
          this._drawBranch(branch.children.NW, ctx);
          this._drawBranch(branch.children.NE, ctx);
          this._drawBranch(branch.children.SE, ctx);
          this._drawBranch(branch.children.SW, ctx);
        }
        ctx.strokeStyle = color;
        ctx.beginPath();
        ctx.moveTo(branch.range.minX, branch.range.minY);
        ctx.lineTo(branch.range.maxX, branch.range.minY);
        ctx.stroke();

        ctx.beginPath();
        ctx.moveTo(branch.range.maxX, branch.range.minY);
        ctx.lineTo(branch.range.maxX, branch.range.maxY);
        ctx.stroke();

        ctx.beginPath();
        ctx.moveTo(branch.range.maxX, branch.range.maxY);
        ctx.lineTo(branch.range.minX, branch.range.maxY);
        ctx.stroke();

        ctx.beginPath();
        ctx.moveTo(branch.range.minX, branch.range.maxY);
        ctx.lineTo(branch.range.minX, branch.range.minY);
        ctx.stroke();

        /*
         if (branch.mass > 0) {
         ctx.circle(branch.centerOfMass.x, branch.centerOfMass.y, 3*branch.mass);
         ctx.stroke();
         }
         */
      }
    }]);

    return BarnesHutSolver;
  })();

  exports["default"] = BarnesHutSolver;
  module.exports = exports["default"];

/***/ },
/* 91 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var RepulsionSolver = (function () {
    function RepulsionSolver(body, physicsBody, options) {
      _classCallCheck(this, RepulsionSolver);

      this.body = body;
      this.physicsBody = physicsBody;
      this.setOptions(options);
    }

    _createClass(RepulsionSolver, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
      }

      /**
       * Calculate the forces the nodes apply on each other based on a repulsion field.
       * This field is linearly approximated.
       *
       * @private
       */
    }, {
      key: "solve",
      value: function solve() {
        var dx, dy, distance, fx, fy, repulsingForce, node1, node2;

        var nodes = this.body.nodes;
        var nodeIndices = this.physicsBody.physicsNodeIndices;
        var forces = this.physicsBody.forces;

        // repulsing forces between nodes
        var nodeDistance = this.options.nodeDistance;

        // approximation constants
        var a = -2 / 3 / nodeDistance;
        var b = 4 / 3;

        // we loop from i over all but the last entree in the array
        // j loops from i+1 to the last. This way we do not double count any of the indices, nor i === j
        for (var i = 0; i < nodeIndices.length - 1; i++) {
          node1 = nodes[nodeIndices[i]];
          for (var j = i + 1; j < nodeIndices.length; j++) {
            node2 = nodes[nodeIndices[j]];

            dx = node2.x - node1.x;
            dy = node2.y - node1.y;
            distance = Math.sqrt(dx * dx + dy * dy);

            // same condition as BarnesHutSolver, making sure nodes are never 100% overlapping.
            if (distance === 0) {
              distance = 0.1 * Math.random();
              dx = distance;
            }

            if (distance < 2 * nodeDistance) {
              if (distance < 0.5 * nodeDistance) {
                repulsingForce = 1.0;
              } else {
                repulsingForce = a * distance + b; // linear approx of  1 / (1 + Math.exp((distance / nodeDistance - 1) * steepness))
              }
              repulsingForce = repulsingForce / distance;

              fx = dx * repulsingForce;
              fy = dy * repulsingForce;

              forces[node1.id].x -= fx;
              forces[node1.id].y -= fy;
              forces[node2.id].x += fx;
              forces[node2.id].y += fy;
            }
          }
        }
      }
    }]);

    return RepulsionSolver;
  })();

  exports["default"] = RepulsionSolver;
  module.exports = exports["default"];

/***/ },
/* 92 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var HierarchicalRepulsionSolver = (function () {
    function HierarchicalRepulsionSolver(body, physicsBody, options) {
      _classCallCheck(this, HierarchicalRepulsionSolver);

      this.body = body;
      this.physicsBody = physicsBody;
      this.setOptions(options);
    }

    _createClass(HierarchicalRepulsionSolver, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
      }

      /**
       * Calculate the forces the nodes apply on each other based on a repulsion field.
       * This field is linearly approximated.
       *
       * @private
       */
    }, {
      key: "solve",
      value: function solve() {
        var dx, dy, distance, fx, fy, repulsingForce, node1, node2, i, j;

        var nodes = this.body.nodes;
        var nodeIndices = this.physicsBody.physicsNodeIndices;
        var forces = this.physicsBody.forces;

        // repulsing forces between nodes
        var nodeDistance = this.options.nodeDistance;

        // we loop from i over all but the last entree in the array
        // j loops from i+1 to the last. This way we do not double count any of the indices, nor i === j
        for (i = 0; i < nodeIndices.length - 1; i++) {
          node1 = nodes[nodeIndices[i]];
          for (j = i + 1; j < nodeIndices.length; j++) {
            node2 = nodes[nodeIndices[j]];

            // nodes only affect nodes on their level
            if (node1.level === node2.level) {
              dx = node2.x - node1.x;
              dy = node2.y - node1.y;
              distance = Math.sqrt(dx * dx + dy * dy);

              var steepness = 0.05;
              if (distance < nodeDistance) {
                repulsingForce = -Math.pow(steepness * distance, 2) + Math.pow(steepness * nodeDistance, 2);
              } else {
                repulsingForce = 0;
              }
              // normalize force with
              if (distance === 0) {
                distance = 0.01;
              } else {
                repulsingForce = repulsingForce / distance;
              }
              fx = dx * repulsingForce;
              fy = dy * repulsingForce;

              forces[node1.id].x -= fx;
              forces[node1.id].y -= fy;
              forces[node2.id].x += fx;
              forces[node2.id].y += fy;
            }
          }
        }
      }
    }]);

    return HierarchicalRepulsionSolver;
  })();

  exports["default"] = HierarchicalRepulsionSolver;
  module.exports = exports["default"];

/***/ },
/* 93 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var SpringSolver = (function () {
    function SpringSolver(body, physicsBody, options) {
      _classCallCheck(this, SpringSolver);

      this.body = body;
      this.physicsBody = physicsBody;
      this.setOptions(options);
    }

    _createClass(SpringSolver, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
      }

      /**
       * This function calculates the springforces on the nodes, accounting for the support nodes.
       *
       * @private
       */
    }, {
      key: "solve",
      value: function solve() {
        var edgeLength = undefined,
            edge = undefined;
        var edgeIndices = this.physicsBody.physicsEdgeIndices;
        var edges = this.body.edges;
        var node1 = undefined,
            node2 = undefined,
            node3 = undefined;

        // forces caused by the edges, modelled as springs
        for (var i = 0; i < edgeIndices.length; i++) {
          edge = edges[edgeIndices[i]];
          if (edge.connected === true && edge.toId !== edge.fromId) {
            // only calculate forces if nodes are in the same sector
            if (this.body.nodes[edge.toId] !== undefined && this.body.nodes[edge.fromId] !== undefined) {
              if (edge.edgeType.via !== undefined) {
                edgeLength = edge.options.length === undefined ? this.options.springLength : edge.options.length;
                node1 = edge.to;
                node2 = edge.edgeType.via;
                node3 = edge.from;

                this._calculateSpringForce(node1, node2, 0.5 * edgeLength);
                this._calculateSpringForce(node2, node3, 0.5 * edgeLength);
              } else {
                // the * 1.5 is here so the edge looks as large as a smooth edge. It does not initially because the smooth edges use
                // the support nodes which exert a repulsive force on the to and from nodes, making the edge appear larger.
                edgeLength = edge.options.length === undefined ? this.options.springLength * 1.5 : edge.options.length;
                this._calculateSpringForce(edge.from, edge.to, edgeLength);
              }
            }
          }
        }
      }

      /**
       * This is the code actually performing the calculation for the function above.
       *
       * @param node1
       * @param node2
       * @param edgeLength
       * @private
       */
    }, {
      key: "_calculateSpringForce",
      value: function _calculateSpringForce(node1, node2, edgeLength) {
        var dx = node1.x - node2.x;
        var dy = node1.y - node2.y;
        var distance = Math.max(Math.sqrt(dx * dx + dy * dy), 0.01);

        // the 1/distance is so the fx and fy can be calculated without sine or cosine.
        var springForce = this.options.springConstant * (edgeLength - distance) / distance;

        var fx = dx * springForce;
        var fy = dy * springForce;

        // handle the case where one node is not part of the physcis
        if (this.physicsBody.forces[node1.id] !== undefined) {
          this.physicsBody.forces[node1.id].x += fx;
          this.physicsBody.forces[node1.id].y += fy;
        }

        if (this.physicsBody.forces[node2.id] !== undefined) {
          this.physicsBody.forces[node2.id].x -= fx;
          this.physicsBody.forces[node2.id].y -= fy;
        }
      }
    }]);

    return SpringSolver;
  })();

  exports["default"] = SpringSolver;
  module.exports = exports["default"];

/***/ },
/* 94 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var HierarchicalSpringSolver = (function () {
    function HierarchicalSpringSolver(body, physicsBody, options) {
      _classCallCheck(this, HierarchicalSpringSolver);

      this.body = body;
      this.physicsBody = physicsBody;
      this.setOptions(options);
    }

    _createClass(HierarchicalSpringSolver, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
      }

      /**
       * This function calculates the springforces on the nodes, accounting for the support nodes.
       *
       * @private
       */
    }, {
      key: "solve",
      value: function solve() {
        var edgeLength, edge;
        var dx, dy, fx, fy, springForce, distance;
        var edges = this.body.edges;
        var factor = 0.5;

        var edgeIndices = this.physicsBody.physicsEdgeIndices;
        var nodeIndices = this.physicsBody.physicsNodeIndices;
        var forces = this.physicsBody.forces;

        // initialize the spring force counters
        for (var i = 0; i < nodeIndices.length; i++) {
          var nodeId = nodeIndices[i];
          forces[nodeId].springFx = 0;
          forces[nodeId].springFy = 0;
        }

        // forces caused by the edges, modelled as springs
        for (var i = 0; i < edgeIndices.length; i++) {
          edge = edges[edgeIndices[i]];
          if (edge.connected === true) {
            edgeLength = edge.options.length === undefined ? this.options.springLength : edge.options.length;

            dx = edge.from.x - edge.to.x;
            dy = edge.from.y - edge.to.y;
            distance = Math.sqrt(dx * dx + dy * dy);
            distance = distance === 0 ? 0.01 : distance;

            // the 1/distance is so the fx and fy can be calculated without sine or cosine.
            springForce = this.options.springConstant * (edgeLength - distance) / distance;

            fx = dx * springForce;
            fy = dy * springForce;

            if (edge.to.level != edge.from.level) {
              if (forces[edge.toId] !== undefined) {
                forces[edge.toId].springFx -= fx;
                forces[edge.toId].springFy -= fy;
              }
              if (forces[edge.fromId] !== undefined) {
                forces[edge.fromId].springFx += fx;
                forces[edge.fromId].springFy += fy;
              }
            } else {
              if (forces[edge.toId] !== undefined) {
                forces[edge.toId].x -= factor * fx;
                forces[edge.toId].y -= factor * fy;
              }
              if (forces[edge.fromId] !== undefined) {
                forces[edge.fromId].x += factor * fx;
                forces[edge.fromId].y += factor * fy;
              }
            }
          }
        }

        // normalize spring forces
        var springForce = 1;
        var springFx, springFy;
        for (var i = 0; i < nodeIndices.length; i++) {
          var nodeId = nodeIndices[i];
          springFx = Math.min(springForce, Math.max(-springForce, forces[nodeId].springFx));
          springFy = Math.min(springForce, Math.max(-springForce, forces[nodeId].springFy));

          forces[nodeId].x += springFx;
          forces[nodeId].y += springFy;
        }

        // retain energy balance
        var totalFx = 0;
        var totalFy = 0;
        for (var i = 0; i < nodeIndices.length; i++) {
          var nodeId = nodeIndices[i];
          totalFx += forces[nodeId].x;
          totalFy += forces[nodeId].y;
        }
        var correctionFx = totalFx / nodeIndices.length;
        var correctionFy = totalFy / nodeIndices.length;

        for (var i = 0; i < nodeIndices.length; i++) {
          var nodeId = nodeIndices[i];
          forces[nodeId].x -= correctionFx;
          forces[nodeId].y -= correctionFy;
        }
      }
    }]);

    return HierarchicalSpringSolver;
  })();

  exports["default"] = HierarchicalSpringSolver;
  module.exports = exports["default"];

/***/ },
/* 95 */
/***/ function(module, exports) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var CentralGravitySolver = (function () {
    function CentralGravitySolver(body, physicsBody, options) {
      _classCallCheck(this, CentralGravitySolver);

      this.body = body;
      this.physicsBody = physicsBody;
      this.setOptions(options);
    }

    _createClass(CentralGravitySolver, [{
      key: "setOptions",
      value: function setOptions(options) {
        this.options = options;
      }
    }, {
      key: "solve",
      value: function solve() {
        var dx = undefined,
            dy = undefined,
            distance = undefined,
            node = undefined;
        var nodes = this.body.nodes;
        var nodeIndices = this.physicsBody.physicsNodeIndices;
        var forces = this.physicsBody.forces;

        for (var i = 0; i < nodeIndices.length; i++) {
          var nodeId = nodeIndices[i];
          node = nodes[nodeId];
          dx = -node.x;
          dy = -node.y;
          distance = Math.sqrt(dx * dx + dy * dy);

          this._calculateForces(distance, dx, dy, forces, node);
        }
      }

      /**
       * Calculate the forces based on the distance.
       * @private
       */
    }, {
      key: "_calculateForces",
      value: function _calculateForces(distance, dx, dy, forces, node) {
        var gravityForce = distance === 0 ? 0 : this.options.centralGravity / distance;
        forces[node.id].x = dx * gravityForce;
        forces[node.id].y = dy * gravityForce;
      }
    }]);

    return CentralGravitySolver;
  })();

  exports["default"] = CentralGravitySolver;
  module.exports = exports["default"];

/***/ },
/* 96 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _BarnesHutSolver2 = __webpack_require__(90);

  var _BarnesHutSolver3 = _interopRequireDefault(_BarnesHutSolver2);

  var ForceAtlas2BasedRepulsionSolver = (function (_BarnesHutSolver) {
    _inherits(ForceAtlas2BasedRepulsionSolver, _BarnesHutSolver);

    function ForceAtlas2BasedRepulsionSolver(body, physicsBody, options) {
      _classCallCheck(this, ForceAtlas2BasedRepulsionSolver);

      _get(Object.getPrototypeOf(ForceAtlas2BasedRepulsionSolver.prototype), "constructor", this).call(this, body, physicsBody, options);
    }

    /**
     * Calculate the forces based on the distance.
     *
     * @param distance
     * @param dx
     * @param dy
     * @param node
     * @param parentBranch
     * @private
     */

    _createClass(ForceAtlas2BasedRepulsionSolver, [{
      key: "_calculateForces",
      value: function _calculateForces(distance, dx, dy, node, parentBranch) {
        if (distance === 0) {
          distance = 0.1 * Math.random();
          dx = distance;
        }

        if (this.overlapAvoidanceFactor < 1) {
          distance = Math.max(0.1 + this.overlapAvoidanceFactor * node.shape.radius, distance - node.shape.radius);
        }

        var degree = node.edges.length + 1;
        // the dividing by the distance cubed instead of squared allows us to get the fx and fy components without sines and cosines
        // it is shorthand for gravityforce with distance squared and fx = dx/distance * gravityForce
        var gravityForce = this.options.gravitationalConstant * parentBranch.mass * node.options.mass * degree / Math.pow(distance, 2);
        var fx = dx * gravityForce;
        var fy = dy * gravityForce;

        this.physicsBody.forces[node.id].x += fx;
        this.physicsBody.forces[node.id].y += fy;
      }
    }]);

    return ForceAtlas2BasedRepulsionSolver;
  })(_BarnesHutSolver3["default"]);

  exports["default"] = ForceAtlas2BasedRepulsionSolver;
  module.exports = exports["default"];

/***/ },
/* 97 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _CentralGravitySolver2 = __webpack_require__(95);

  var _CentralGravitySolver3 = _interopRequireDefault(_CentralGravitySolver2);

  var ForceAtlas2BasedCentralGravitySolver = (function (_CentralGravitySolver) {
    _inherits(ForceAtlas2BasedCentralGravitySolver, _CentralGravitySolver);

    function ForceAtlas2BasedCentralGravitySolver(body, physicsBody, options) {
      _classCallCheck(this, ForceAtlas2BasedCentralGravitySolver);

      _get(Object.getPrototypeOf(ForceAtlas2BasedCentralGravitySolver.prototype), "constructor", this).call(this, body, physicsBody, options);
    }

    /**
     * Calculate the forces based on the distance.
     * @private
     */

    _createClass(ForceAtlas2BasedCentralGravitySolver, [{
      key: "_calculateForces",
      value: function _calculateForces(distance, dx, dy, forces, node) {
        if (distance > 0) {
          var degree = node.edges.length + 1;
          var gravityForce = this.options.centralGravity * degree * node.options.mass;
          forces[node.id].x = dx * gravityForce;
          forces[node.id].y = dy * gravityForce;
        }
      }
    }]);

    return ForceAtlas2BasedCentralGravitySolver;
  })(_CentralGravitySolver3["default"]);

  exports["default"] = ForceAtlas2BasedCentralGravitySolver;
  module.exports = exports["default"];

/***/ },
/* 98 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _NetworkUtil = __webpack_require__(99);

  var _NetworkUtil2 = _interopRequireDefault(_NetworkUtil);

  var _componentsNodesCluster = __webpack_require__(100);

  var _componentsNodesCluster2 = _interopRequireDefault(_componentsNodesCluster);

  var util = __webpack_require__(1);

  var ClusterEngine = (function () {
    function ClusterEngine(body) {
      var _this = this;

      _classCallCheck(this, ClusterEngine);

      this.body = body;
      this.clusteredNodes = {};
      this.clusteredEdges = {};

      this.options = {};
      this.defaultOptions = {};
      util.extend(this.options, this.defaultOptions);

      this.body.emitter.on('_resetData', function () {
        _this.clusteredNodes = {};_this.clusteredEdges = {};
      });
    }

    _createClass(ClusterEngine, [{
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {}
      }

      /**
      *
      * @param hubsize
      * @param options
      */
    }, {
      key: 'clusterByHubsize',
      value: function clusterByHubsize(hubsize, options) {
        if (hubsize === undefined) {
          hubsize = this._getHubSize();
        } else if (typeof hubsize === "object") {
          options = this._checkOptions(hubsize);
          hubsize = this._getHubSize();
        }

        var nodesToCluster = [];
        for (var i = 0; i < this.body.nodeIndices.length; i++) {
          var node = this.body.nodes[this.body.nodeIndices[i]];
          if (node.edges.length >= hubsize) {
            nodesToCluster.push(node.id);
          }
        }

        for (var i = 0; i < nodesToCluster.length; i++) {
          this.clusterByConnection(nodesToCluster[i], options, true);
        }

        this.body.emitter.emit('_dataChanged');
      }

      /**
      * loop over all nodes, check if they adhere to the condition and cluster if needed.
      * @param options
      * @param refreshData
      */
    }, {
      key: 'cluster',
      value: function cluster() {
        var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
        var refreshData = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        if (options.joinCondition === undefined) {
          throw new Error("Cannot call clusterByNodeData without a joinCondition function in the options.");
        }

        // check if the options object is fine, append if needed
        options = this._checkOptions(options);

        var childNodesObj = {};
        var childEdgesObj = {};

        // collect the nodes that will be in the cluster
        for (var i = 0; i < this.body.nodeIndices.length; i++) {
          var nodeId = this.body.nodeIndices[i];
          var node = this.body.nodes[nodeId];
          var clonedOptions = _NetworkUtil2['default'].cloneOptions(node);
          if (options.joinCondition(clonedOptions) === true) {
            childNodesObj[nodeId] = this.body.nodes[nodeId];

            // collect the nodes that will be in the cluster
            for (var _i = 0; _i < node.edges.length; _i++) {
              var edge = node.edges[_i];
              if (this.clusteredEdges[edge.id] === undefined) {
                childEdgesObj[edge.id] = edge;
              }
            }
          }
        }

        this._cluster(childNodesObj, childEdgesObj, options, refreshData);
      }

      /**
       * Cluster all nodes in the network that have only X edges
       * @param edgeCount
       * @param options
       * @param refreshData
       */
    }, {
      key: 'clusterByEdgeCount',
      value: function clusterByEdgeCount(edgeCount, options) {
        var refreshData = arguments.length <= 2 || arguments[2] === undefined ? true : arguments[2];

        options = this._checkOptions(options);
        var clusters = [];
        var usedNodes = {};
        var edge = undefined,
            edges = undefined,
            node = undefined,
            nodeId = undefined,
            relevantEdgeCount = undefined;
        // collect the nodes that will be in the cluster
        for (var i = 0; i < this.body.nodeIndices.length; i++) {
          var childNodesObj = {};
          var childEdgesObj = {};
          nodeId = this.body.nodeIndices[i];

          // if this node is already used in another cluster this session, we do not have to re-evaluate it.
          if (usedNodes[nodeId] === undefined) {
            relevantEdgeCount = 0;
            node = this.body.nodes[nodeId];
            edges = [];
            for (var j = 0; j < node.edges.length; j++) {
              edge = node.edges[j];
              if (this.clusteredEdges[edge.id] === undefined) {
                if (edge.toId !== edge.fromId) {
                  relevantEdgeCount++;
                }
                edges.push(edge);
              }
            }

            // this node qualifies, we collect its neighbours to start the clustering process.
            if (relevantEdgeCount === edgeCount) {
              var gatheringSuccessful = true;
              for (var j = 0; j < edges.length; j++) {
                edge = edges[j];
                var childNodeId = this._getConnectedId(edge, nodeId);
                // add the nodes to the list by the join condition.
                if (options.joinCondition === undefined) {
                  childEdgesObj[edge.id] = edge;
                  childNodesObj[nodeId] = this.body.nodes[nodeId];
                  childNodesObj[childNodeId] = this.body.nodes[childNodeId];
                  usedNodes[nodeId] = true;
                } else {
                  var clonedOptions = _NetworkUtil2['default'].cloneOptions(this.body.nodes[nodeId]);
                  if (options.joinCondition(clonedOptions) === true) {
                    childEdgesObj[edge.id] = edge;
                    childNodesObj[nodeId] = this.body.nodes[nodeId];
                    usedNodes[nodeId] = true;
                  } else {
                    // this node does not qualify after all.
                    gatheringSuccessful = false;
                    break;
                  }
                }
              }

              // add to the cluster queue
              if (Object.keys(childNodesObj).length > 0 && Object.keys(childEdgesObj).length > 0 && gatheringSuccessful === true) {
                clusters.push({ nodes: childNodesObj, edges: childEdgesObj });
              }
            }
          }
        }

        for (var i = 0; i < clusters.length; i++) {
          this._cluster(clusters[i].nodes, clusters[i].edges, options, false);
        }

        if (refreshData === true) {
          this.body.emitter.emit('_dataChanged');
        }
      }

      /**
      * Cluster all nodes in the network that have only 1 edge
      * @param options
      * @param refreshData
      */
    }, {
      key: 'clusterOutliers',
      value: function clusterOutliers(options) {
        var refreshData = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        this.clusterByEdgeCount(1, options, refreshData);
      }

      /**
       * Cluster all nodes in the network that have only 2 edge
       * @param options
       * @param refreshData
       */
    }, {
      key: 'clusterBridges',
      value: function clusterBridges(options) {
        var refreshData = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        this.clusterByEdgeCount(2, options, refreshData);
      }

      /**
      * suck all connected nodes of a node into the node.
      * @param nodeId
      * @param options
      * @param refreshData
      */
    }, {
      key: 'clusterByConnection',
      value: function clusterByConnection(nodeId, options) {
        var refreshData = arguments.length <= 2 || arguments[2] === undefined ? true : arguments[2];

        // kill conditions
        if (nodeId === undefined) {
          throw new Error("No nodeId supplied to clusterByConnection!");
        }
        if (this.body.nodes[nodeId] === undefined) {
          throw new Error("The nodeId given to clusterByConnection does not exist!");
        }

        var node = this.body.nodes[nodeId];
        options = this._checkOptions(options, node);
        if (options.clusterNodeProperties.x === undefined) {
          options.clusterNodeProperties.x = node.x;
        }
        if (options.clusterNodeProperties.y === undefined) {
          options.clusterNodeProperties.y = node.y;
        }
        if (options.clusterNodeProperties.fixed === undefined) {
          options.clusterNodeProperties.fixed = {};
          options.clusterNodeProperties.fixed.x = node.options.fixed.x;
          options.clusterNodeProperties.fixed.y = node.options.fixed.y;
        }

        var childNodesObj = {};
        var childEdgesObj = {};
        var parentNodeId = node.id;
        var parentClonedOptions = _NetworkUtil2['default'].cloneOptions(node);
        childNodesObj[parentNodeId] = node;

        // collect the nodes that will be in the cluster
        for (var i = 0; i < node.edges.length; i++) {
          var edge = node.edges[i];
          if (this.clusteredEdges[edge.id] === undefined) {
            var childNodeId = this._getConnectedId(edge, parentNodeId);

            // if the child node is not in a cluster
            if (this.clusteredNodes[childNodeId] === undefined) {
              if (childNodeId !== parentNodeId) {
                if (options.joinCondition === undefined) {
                  childEdgesObj[edge.id] = edge;
                  childNodesObj[childNodeId] = this.body.nodes[childNodeId];
                } else {
                  // clone the options and insert some additional parameters that could be interesting.
                  var childClonedOptions = _NetworkUtil2['default'].cloneOptions(this.body.nodes[childNodeId]);
                  if (options.joinCondition(parentClonedOptions, childClonedOptions) === true) {
                    childEdgesObj[edge.id] = edge;
                    childNodesObj[childNodeId] = this.body.nodes[childNodeId];
                  }
                }
              } else {
                // swallow the edge if it is self-referencing.
                childEdgesObj[edge.id] = edge;
              }
            }
          }
        }

        this._cluster(childNodesObj, childEdgesObj, options, refreshData);
      }

      /**
      * This function creates the edges that will be attached to the cluster
      * It looks for edges that are connected to the nodes from the "outside' of the cluster.
      *
      * @param childNodesObj
      * @param childEdgesObj
      * @param clusterNodeProperties
      * @param clusterEdgeProperties
      * @private
      */
    }, {
      key: '_createClusterEdges',
      value: function _createClusterEdges(childNodesObj, childEdgesObj, clusterNodeProperties, clusterEdgeProperties) {
        var edge = undefined,
            childNodeId = undefined,
            childNode = undefined,
            toId = undefined,
            fromId = undefined,
            otherNodeId = undefined;

        // loop over all child nodes and their edges to find edges going out of the cluster
        // these edges will be replaced by clusterEdges.
        var childKeys = Object.keys(childNodesObj);
        var createEdges = [];
        for (var i = 0; i < childKeys.length; i++) {
          childNodeId = childKeys[i];
          childNode = childNodesObj[childNodeId];

          // construct new edges from the cluster to others
          for (var j = 0; j < childNode.edges.length; j++) {
            edge = childNode.edges[j];
            // we only handle edges that are visible to the system, not the disabled ones from the clustering process.
            if (this.clusteredEdges[edge.id] === undefined) {
              // self-referencing edges will be added to the "hidden" list
              if (edge.toId == edge.fromId) {
                childEdgesObj[edge.id] = edge;
              } else {
                // set up the from and to.
                if (edge.toId == childNodeId) {
                  // this is a double equals because ints and strings can be interchanged here.
                  toId = clusterNodeProperties.id;
                  fromId = edge.fromId;
                  otherNodeId = fromId;
                } else {
                  toId = edge.toId;
                  fromId = clusterNodeProperties.id;
                  otherNodeId = toId;
                }
              }

              // Only edges from the cluster outwards are being replaced.
              if (childNodesObj[otherNodeId] === undefined) {
                createEdges.push({ edge: edge, fromId: fromId, toId: toId });
              }
            }
          }
        }

        // here we actually create the replacement edges. We could not do this in the loop above as the creation process
        // would add an edge to the edges array we are iterating over.
        for (var j = 0; j < createEdges.length; j++) {
          var _edge = createEdges[j].edge;
          // copy the options of the edge we will replace
          var clonedOptions = _NetworkUtil2['default'].cloneOptions(_edge, 'edge');
          // make sure the properties of clusterEdges are superimposed on it
          util.deepExtend(clonedOptions, clusterEdgeProperties);

          // set up the edge
          clonedOptions.from = createEdges[j].fromId;
          clonedOptions.to = createEdges[j].toId;
          clonedOptions.id = 'clusterEdge:' + util.randomUUID();
          //clonedOptions.id = '(cf: ' + createEdges[j].fromId + " to: " + createEdges[j].toId + ")" + Math.random();

          // create the edge and give a reference to the one it replaced.
          var newEdge = this.body.functions.createEdge(clonedOptions);
          newEdge.clusteringEdgeReplacingId = _edge.id;

          // connect the edge.
          this.body.edges[newEdge.id] = newEdge;
          newEdge.connect();

          // hide the replaced edge
          this._backupEdgeOptions(_edge);
          _edge.setOptions({ physics: false, hidden: true });
        }
      }

      /**
      * This function checks the options that can be supplied to the different cluster functions
      * for certain fields and inserts defaults if needed
      * @param options
      * @returns {*}
      * @private
      */
    }, {
      key: '_checkOptions',
      value: function _checkOptions() {
        var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        if (options.clusterEdgeProperties === undefined) {
          options.clusterEdgeProperties = {};
        }
        if (options.clusterNodeProperties === undefined) {
          options.clusterNodeProperties = {};
        }

        return options;
      }

      /**
      *
      * @param {Object}    childNodesObj         | object with node objects, id as keys, same as childNodes except it also contains a source node
      * @param {Object}    childEdgesObj         | object with edge objects, id as keys
      * @param {Array}     options               | object with {clusterNodeProperties, clusterEdgeProperties, processProperties}
      * @param {Boolean}   refreshData | when true, do not wrap up
      * @private
      */
    }, {
      key: '_cluster',
      value: function _cluster(childNodesObj, childEdgesObj, options) {
        var refreshData = arguments.length <= 3 || arguments[3] === undefined ? true : arguments[3];

        // kill condition: no children so can't cluster or only one node in the cluster, don't bother
        if (Object.keys(childNodesObj).length < 2) {
          return;
        }

        // check if this cluster call is not trying to cluster anything that is in another cluster.
        for (var nodeId in childNodesObj) {
          if (childNodesObj.hasOwnProperty(nodeId)) {
            if (this.clusteredNodes[nodeId] !== undefined) {
              return;
            }
          }
        }

        var clusterNodeProperties = util.deepExtend({}, options.clusterNodeProperties);

        // construct the clusterNodeProperties
        if (options.processProperties !== undefined) {
          // get the childNode options
          var childNodesOptions = [];
          for (var nodeId in childNodesObj) {
            if (childNodesObj.hasOwnProperty(nodeId)) {
              var clonedOptions = _NetworkUtil2['default'].cloneOptions(childNodesObj[nodeId]);
              childNodesOptions.push(clonedOptions);
            }
          }

          // get cluster properties based on childNodes
          var childEdgesOptions = [];
          for (var edgeId in childEdgesObj) {
            if (childEdgesObj.hasOwnProperty(edgeId)) {
              // these cluster edges will be removed on creation of the cluster.
              if (edgeId.substr(0, 12) !== "clusterEdge:") {
                var clonedOptions = _NetworkUtil2['default'].cloneOptions(childEdgesObj[edgeId], 'edge');
                childEdgesOptions.push(clonedOptions);
              }
            }
          }

          clusterNodeProperties = options.processProperties(clusterNodeProperties, childNodesOptions, childEdgesOptions);
          if (!clusterNodeProperties) {
            throw new Error("The processProperties function does not return properties!");
          }
        }

        // check if we have an unique id;
        if (clusterNodeProperties.id === undefined) {
          clusterNodeProperties.id = 'cluster:' + util.randomUUID();
        }
        var clusterId = clusterNodeProperties.id;

        if (clusterNodeProperties.label === undefined) {
          clusterNodeProperties.label = 'cluster';
        }

        // give the clusterNode a position if it does not have one.
        var pos = undefined;
        if (clusterNodeProperties.x === undefined) {
          pos = this._getClusterPosition(childNodesObj);
          clusterNodeProperties.x = pos.x;
        }
        if (clusterNodeProperties.y === undefined) {
          if (pos === undefined) {
            pos = this._getClusterPosition(childNodesObj);
          }
          clusterNodeProperties.y = pos.y;
        }

        // force the ID to remain the same
        clusterNodeProperties.id = clusterId;

        // create the clusterNode
        var clusterNode = this.body.functions.createNode(clusterNodeProperties, _componentsNodesCluster2['default']);
        clusterNode.isCluster = true;
        clusterNode.containedNodes = childNodesObj;
        clusterNode.containedEdges = childEdgesObj;
        // cache a copy from the cluster edge properties if we have to reconnect others later on
        clusterNode.clusterEdgeProperties = options.clusterEdgeProperties;

        // finally put the cluster node into global
        this.body.nodes[clusterNodeProperties.id] = clusterNode;

        // create the new edges that will connect to the cluster, all self-referencing edges will be added to childEdgesObject here.
        this._createClusterEdges(childNodesObj, childEdgesObj, clusterNodeProperties, options.clusterEdgeProperties);

        // disable the childEdges
        for (var edgeId in childEdgesObj) {
          if (childEdgesObj.hasOwnProperty(edgeId)) {
            if (this.body.edges[edgeId] !== undefined) {
              var edge = this.body.edges[edgeId];
              // cache the options before changing
              this._backupEdgeOptions(edge);
              // disable physics and hide the edge
              edge.setOptions({ physics: false, hidden: true });
            }
          }
        }

        // disable the childNodes
        for (var nodeId in childNodesObj) {
          if (childNodesObj.hasOwnProperty(nodeId)) {
            this.clusteredNodes[nodeId] = { clusterId: clusterNodeProperties.id, node: this.body.nodes[nodeId] };
            this.body.nodes[nodeId].setOptions({ hidden: true, physics: false });
          }
        }

        // set ID to undefined so no duplicates arise
        clusterNodeProperties.id = undefined;

        // wrap up
        if (refreshData === true) {
          this.body.emitter.emit('_dataChanged');
        }
      }
    }, {
      key: '_backupEdgeOptions',
      value: function _backupEdgeOptions(edge) {
        if (this.clusteredEdges[edge.id] === undefined) {
          this.clusteredEdges[edge.id] = { physics: edge.options.physics, hidden: edge.options.hidden };
        }
      }
    }, {
      key: '_restoreEdge',
      value: function _restoreEdge(edge) {
        var originalOptions = this.clusteredEdges[edge.id];
        if (originalOptions !== undefined) {
          edge.setOptions({ physics: originalOptions.physics, hidden: originalOptions.hidden });
          delete this.clusteredEdges[edge.id];
        }
      }

      /**
      * Check if a node is a cluster.
      * @param nodeId
      * @returns {*}
      */
    }, {
      key: 'isCluster',
      value: function isCluster(nodeId) {
        if (this.body.nodes[nodeId] !== undefined) {
          return this.body.nodes[nodeId].isCluster === true;
        } else {
          console.log("Node does not exist.");
          return false;
        }
      }

      /**
      * get the position of the cluster node based on what's inside
      * @param {object} childNodesObj    | object with node objects, id as keys
      * @returns {{x: number, y: number}}
      * @private
      */
    }, {
      key: '_getClusterPosition',
      value: function _getClusterPosition(childNodesObj) {
        var childKeys = Object.keys(childNodesObj);
        var minX = childNodesObj[childKeys[0]].x;
        var maxX = childNodesObj[childKeys[0]].x;
        var minY = childNodesObj[childKeys[0]].y;
        var maxY = childNodesObj[childKeys[0]].y;
        var node = undefined;
        for (var i = 1; i < childKeys.length; i++) {
          node = childNodesObj[childKeys[i]];
          minX = node.x < minX ? node.x : minX;
          maxX = node.x > maxX ? node.x : maxX;
          minY = node.y < minY ? node.y : minY;
          maxY = node.y > maxY ? node.y : maxY;
        }

        return { x: 0.5 * (minX + maxX), y: 0.5 * (minY + maxY) };
      }

      /**
      * Open a cluster by calling this function.
      * @param {String}  clusterNodeId | the ID of the cluster node
      * @param {Boolean} refreshData | wrap up afterwards if not true
      */
    }, {
      key: 'openCluster',
      value: function openCluster(clusterNodeId, options) {
        var refreshData = arguments.length <= 2 || arguments[2] === undefined ? true : arguments[2];

        // kill conditions
        if (clusterNodeId === undefined) {
          throw new Error("No clusterNodeId supplied to openCluster.");
        }
        if (this.body.nodes[clusterNodeId] === undefined) {
          throw new Error("The clusterNodeId supplied to openCluster does not exist.");
        }
        if (this.body.nodes[clusterNodeId].containedNodes === undefined) {
          console.log("The node:" + clusterNodeId + " is not a cluster.");
          return;
        }
        var clusterNode = this.body.nodes[clusterNodeId];
        var containedNodes = clusterNode.containedNodes;
        var containedEdges = clusterNode.containedEdges;

        // allow the user to position the nodes after release.
        if (options !== undefined && options.releaseFunction !== undefined && typeof options.releaseFunction === 'function') {
          var positions = {};
          var clusterPosition = { x: clusterNode.x, y: clusterNode.y };
          for (var nodeId in containedNodes) {
            if (containedNodes.hasOwnProperty(nodeId)) {
              var containedNode = this.body.nodes[nodeId];
              positions[nodeId] = { x: containedNode.x, y: containedNode.y };
            }
          }
          var newPositions = options.releaseFunction(clusterPosition, positions);

          for (var nodeId in containedNodes) {
            if (containedNodes.hasOwnProperty(nodeId)) {
              var containedNode = this.body.nodes[nodeId];
              if (newPositions[nodeId] !== undefined) {
                containedNode.x = newPositions[nodeId].x === undefined ? clusterNode.x : newPositions[nodeId].x;
                containedNode.y = newPositions[nodeId].y === undefined ? clusterNode.y : newPositions[nodeId].y;
              }
            }
          }
        } else {
          // copy the position from the cluster
          for (var nodeId in containedNodes) {
            if (containedNodes.hasOwnProperty(nodeId)) {
              var containedNode = this.body.nodes[nodeId];
              containedNode = containedNodes[nodeId];
              // inherit position
              if (containedNode.options.fixed.x === false) {
                containedNode.x = clusterNode.x;
              }
              if (containedNode.options.fixed.y === false) {
                containedNode.y = clusterNode.y;
              }
            }
          }
        }

        // release nodes
        for (var nodeId in containedNodes) {
          if (containedNodes.hasOwnProperty(nodeId)) {
            var containedNode = this.body.nodes[nodeId];

            // inherit speed
            containedNode.vx = clusterNode.vx;
            containedNode.vy = clusterNode.vy;

            // we use these methods to avoid re-instantiating the shape, which happens with setOptions.
            containedNode.setOptions({ hidden: false, physics: true });

            delete this.clusteredNodes[nodeId];
          }
        }

        // copy the clusterNode edges because we cannot iterate over an object that we add or remove from.
        var edgesToBeDeleted = [];
        for (var i = 0; i < clusterNode.edges.length; i++) {
          edgesToBeDeleted.push(clusterNode.edges[i]);
        }

        // actually handling the deleting.
        for (var i = 0; i < edgesToBeDeleted.length; i++) {
          var edge = edgesToBeDeleted[i];

          var otherNodeId = this._getConnectedId(edge, clusterNodeId);
          // if the other node is in another cluster, we transfer ownership of this edge to the other cluster
          if (this.clusteredNodes[otherNodeId] !== undefined) {
            // transfer ownership:
            var otherCluster = this.body.nodes[this.clusteredNodes[otherNodeId].clusterId];
            var transferEdge = this.body.edges[edge.clusteringEdgeReplacingId];
            if (transferEdge !== undefined) {
              otherCluster.containedEdges[transferEdge.id] = transferEdge;

              // delete local reference
              delete containedEdges[transferEdge.id];

              // create new cluster edge from the otherCluster:
              // get to and from
              var fromId = transferEdge.fromId;
              var toId = transferEdge.toId;
              if (transferEdge.toId == otherNodeId) {
                toId = this.clusteredNodes[otherNodeId].clusterId;
              } else {
                fromId = this.clusteredNodes[otherNodeId].clusterId;
              }

              // clone the options and apply the cluster options to them
              var clonedOptions = _NetworkUtil2['default'].cloneOptions(transferEdge, 'edge');
              util.deepExtend(clonedOptions, otherCluster.clusterEdgeProperties);

              // apply the edge specific options to it.
              var id = 'clusterEdge:' + util.randomUUID();
              util.deepExtend(clonedOptions, { from: fromId, to: toId, hidden: false, physics: true, id: id });

              // create it
              var newEdge = this.body.functions.createEdge(clonedOptions);
              newEdge.clusteringEdgeReplacingId = transferEdge.id;
              this.body.edges[id] = newEdge;
              this.body.edges[id].connect();
            }
          } else {
            var replacedEdge = this.body.edges[edge.clusteringEdgeReplacingId];
            if (replacedEdge !== undefined) {
              this._restoreEdge(replacedEdge);
            }
          }
          edge.cleanup();
          // this removes the edge from node.edges, which is why edgeIds is formed
          edge.disconnect();
          delete this.body.edges[edge.id];
        }

        // handle the releasing of the edges
        for (var edgeId in containedEdges) {
          if (containedEdges.hasOwnProperty(edgeId)) {
            this._restoreEdge(containedEdges[edgeId]);
          }
        }

        // remove clusterNode
        delete this.body.nodes[clusterNodeId];

        if (refreshData === true) {
          this.body.emitter.emit('_dataChanged');
        }
      }
    }, {
      key: 'getNodesInCluster',
      value: function getNodesInCluster(clusterId) {
        var nodesArray = [];
        if (this.isCluster(clusterId) === true) {
          var containedNodes = this.body.nodes[clusterId].containedNodes;
          for (var nodeId in containedNodes) {
            if (containedNodes.hasOwnProperty(nodeId)) {
              nodesArray.push(this.body.nodes[nodeId].id);
            }
          }
        }

        return nodesArray;
      }

      /**
      * Get the stack clusterId's that a certain node resides in. cluster A -> cluster B -> cluster C -> node
      * @param nodeId
      * @returns {Array}
      */
    }, {
      key: 'findNode',
      value: function findNode(nodeId) {
        var stack = [];
        var max = 100;
        var counter = 0;

        while (this.clusteredNodes[nodeId] !== undefined && counter < max) {
          stack.push(this.body.nodes[nodeId].id);
          nodeId = this.clusteredNodes[nodeId].clusterId;
          counter++;
        }
        stack.push(this.body.nodes[nodeId].id);
        stack.reverse();

        return stack;
      }

      /**
      * Get the Id the node is connected to
      * @param edge
      * @param nodeId
      * @returns {*}
      * @private
      */
    }, {
      key: '_getConnectedId',
      value: function _getConnectedId(edge, nodeId) {
        if (edge.toId != nodeId) {
          return edge.toId;
        } else if (edge.fromId != nodeId) {
          return edge.fromId;
        } else {
          return edge.fromId;
        }
      }

      /**
      * We determine how many connections denote an important hub.
      * We take the mean + 2*std as the important hub size. (Assuming a normal distribution of data, ~2.2%)
      *
      * @private
      */
    }, {
      key: '_getHubSize',
      value: function _getHubSize() {
        var average = 0;
        var averageSquared = 0;
        var hubCounter = 0;
        var largestHub = 0;

        for (var i = 0; i < this.body.nodeIndices.length; i++) {
          var node = this.body.nodes[this.body.nodeIndices[i]];
          if (node.edges.length > largestHub) {
            largestHub = node.edges.length;
          }
          average += node.edges.length;
          averageSquared += Math.pow(node.edges.length, 2);
          hubCounter += 1;
        }
        average = average / hubCounter;
        averageSquared = averageSquared / hubCounter;

        var variance = averageSquared - Math.pow(average, 2);
        var standardDeviation = Math.sqrt(variance);

        var hubThreshold = Math.floor(average + 2 * standardDeviation);

        // always have at least one to cluster
        if (hubThreshold > largestHub) {
          hubThreshold = largestHub;
        }

        return hubThreshold;
      }
    }]);

    return ClusterEngine;
  })();

  exports['default'] = ClusterEngine;
  module.exports = exports['default'];

/***/ },
/* 99 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var util = __webpack_require__(1);

  var NetworkUtil = (function () {
    function NetworkUtil() {
      _classCallCheck(this, NetworkUtil);
    }

    /**
     * Find the center position of the network considering the bounding boxes
     */

    _createClass(NetworkUtil, null, [{
      key: "getRange",
      value: function getRange(allNodes) {
        var specificNodes = arguments.length <= 1 || arguments[1] === undefined ? [] : arguments[1];

        var minY = 1e9,
            maxY = -1e9,
            minX = 1e9,
            maxX = -1e9,
            node;
        if (specificNodes.length > 0) {
          for (var i = 0; i < specificNodes.length; i++) {
            node = allNodes[specificNodes[i]];
            if (minX > node.shape.boundingBox.left) {
              minX = node.shape.boundingBox.left;
            }
            if (maxX < node.shape.boundingBox.right) {
              maxX = node.shape.boundingBox.right;
            }
            if (minY > node.shape.boundingBox.top) {
              minY = node.shape.boundingBox.top;
            } // top is negative, bottom is positive
            if (maxY < node.shape.boundingBox.bottom) {
              maxY = node.shape.boundingBox.bottom;
            } // top is negative, bottom is positive
          }
        }

        if (minX === 1e9 && maxX === -1e9 && minY === 1e9 && maxY === -1e9) {
          minY = 0, maxY = 0, minX = 0, maxX = 0;
        }
        return { minX: minX, maxX: maxX, minY: minY, maxY: maxY };
      }

      /**
       * Find the center position of the network
       */
    }, {
      key: "getRangeCore",
      value: function getRangeCore(allNodes) {
        var specificNodes = arguments.length <= 1 || arguments[1] === undefined ? [] : arguments[1];

        var minY = 1e9,
            maxY = -1e9,
            minX = 1e9,
            maxX = -1e9,
            node;
        if (specificNodes.length > 0) {
          for (var i = 0; i < specificNodes.length; i++) {
            node = allNodes[specificNodes[i]];
            if (minX > node.x) {
              minX = node.x;
            }
            if (maxX < node.x) {
              maxX = node.x;
            }
            if (minY > node.y) {
              minY = node.y;
            } // top is negative, bottom is positive
            if (maxY < node.y) {
              maxY = node.y;
            } // top is negative, bottom is positive
          }
        }

        if (minX === 1e9 && maxX === -1e9 && minY === 1e9 && maxY === -1e9) {
          minY = 0, maxY = 0, minX = 0, maxX = 0;
        }
        return { minX: minX, maxX: maxX, minY: minY, maxY: maxY };
      }

      /**
       * @param {object} range = {minX: minX, maxX: maxX, minY: minY, maxY: maxY};
       * @returns {{x: number, y: number}}
       */
    }, {
      key: "findCenter",
      value: function findCenter(range) {
        return { x: 0.5 * (range.maxX + range.minX),
          y: 0.5 * (range.maxY + range.minY) };
      }

      /**
       * This returns a clone of the options or options of the edge or node to be used for construction of new edges or check functions for new nodes.
       * @param item
       * @param type
       * @returns {{}}
       */
    }, {
      key: "cloneOptions",
      value: function cloneOptions(item, type) {
        var clonedOptions = {};
        if (type === undefined || type === 'node') {
          util.deepExtend(clonedOptions, item.options, true);
          clonedOptions.x = item.x;
          clonedOptions.y = item.y;
          clonedOptions.amountOfConnections = item.edges.length;
        } else {
          util.deepExtend(clonedOptions, item.options, true);
        }
        return clonedOptions;
      }
    }]);

    return NetworkUtil;
  })();

  exports["default"] = NetworkUtil;
  module.exports = exports["default"];

/***/ },
/* 100 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

  var _Node2 = __webpack_require__(61);

  var _Node3 = _interopRequireDefault(_Node2);

  /**
   *
   */

  var Cluster = (function (_Node) {
    _inherits(Cluster, _Node);

    function Cluster(options, body, imagelist, grouplist, globalOptions) {
      _classCallCheck(this, Cluster);

      _get(Object.getPrototypeOf(Cluster.prototype), 'constructor', this).call(this, options, body, imagelist, grouplist, globalOptions);

      this.isCluster = true;
      this.containedNodes = {};
      this.containedEdges = {};
    }

    return Cluster;
  })(_Node3['default']);

  exports['default'] = Cluster;
  module.exports = exports['default'];

/***/ },
/* 101 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  if (typeof window !== 'undefined') {
    window.requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame;
  }

  var util = __webpack_require__(1);

  var CanvasRenderer = (function () {
    function CanvasRenderer(body, canvas) {
      _classCallCheck(this, CanvasRenderer);

      this.body = body;
      this.canvas = canvas;

      this.redrawRequested = false;
      this.renderTimer = undefined;
      this.requiresTimeout = true;
      this.renderingActive = false;
      this.renderRequests = 0;
      this.pixelRatio = undefined;
      this.allowRedraw = true;

      this.dragging = false;
      this.options = {};
      this.defaultOptions = {
        hideEdgesOnDrag: false,
        hideNodesOnDrag: false
      };
      util.extend(this.options, this.defaultOptions);

      this._determineBrowserMethod();
      this.bindEventListeners();
    }

    _createClass(CanvasRenderer, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this = this;

        this.body.emitter.on("dragStart", function () {
          _this.dragging = true;
        });
        this.body.emitter.on("dragEnd", function () {
          return _this.dragging = false;
        });
        this.body.emitter.on("_resizeNodes", function () {
          return _this._resizeNodes();
        });
        this.body.emitter.on("_redraw", function () {
          if (_this.renderingActive === false) {
            _this._redraw();
          }
        });
        this.body.emitter.on("_blockRedraw", function () {
          _this.allowRedraw = false;
        });
        this.body.emitter.on("_allowRedraw", function () {
          _this.allowRedraw = true;_this.redrawRequested = false;
        });
        this.body.emitter.on("_requestRedraw", this._requestRedraw.bind(this));
        this.body.emitter.on("_startRendering", function () {
          _this.renderRequests += 1;
          _this.renderingActive = true;
          _this._startRendering();
        });
        this.body.emitter.on("_stopRendering", function () {
          _this.renderRequests -= 1;
          _this.renderingActive = _this.renderRequests > 0;
          _this.renderTimer = undefined;
        });
        this.body.emitter.on('destroy', function () {
          _this.renderRequests = 0;
          _this.allowRedraw = false;
          _this.renderingActive = false;
          if (_this.requiresTimeout === true) {
            clearTimeout(_this.renderTimer);
          } else {
            cancelAnimationFrame(_this.renderTimer);
          }
          _this.body.emitter.off();
        });
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          var fields = ['hideEdgesOnDrag', 'hideNodesOnDrag'];
          util.selectiveDeepExtend(fields, this.options, options);
        }
      }
    }, {
      key: '_startRendering',
      value: function _startRendering() {
        if (this.renderingActive === true) {
          if (this.renderTimer === undefined) {
            if (this.requiresTimeout === true) {
              this.renderTimer = window.setTimeout(this._renderStep.bind(this), this.simulationInterval); // wait this.renderTimeStep milliseconds and perform the animation step function
            } else {
                this.renderTimer = window.requestAnimationFrame(this._renderStep.bind(this)); // wait this.renderTimeStep milliseconds and perform the animation step function
              }
          }
        }
      }
    }, {
      key: '_renderStep',
      value: function _renderStep() {
        if (this.renderingActive === true) {
          // reset the renderTimer so a new scheduled animation step can be set
          this.renderTimer = undefined;

          if (this.requiresTimeout === true) {
            // this schedules a new simulation step
            this._startRendering();
          }

          this._redraw();

          if (this.requiresTimeout === false) {
            // this schedules a new simulation step
            this._startRendering();
          }
        }
      }

      /**
       * Redraw the network with the current data
       * chart will be resized too.
       */
    }, {
      key: 'redraw',
      value: function redraw() {
        this.body.emitter.emit('setSize');
        this._redraw();
      }

      /**
       * Redraw the network with the current data
       * @param hidden | used to get the first estimate of the node sizes. only the nodes are drawn after which they are quickly drawn over.
       * @private
       */
    }, {
      key: '_requestRedraw',
      value: function _requestRedraw() {
        var _this2 = this;

        if (this.redrawRequested !== true && this.renderingActive === false && this.allowRedraw === true) {
          this.redrawRequested = true;
          if (this.requiresTimeout === true) {
            window.setTimeout(function () {
              _this2._redraw(false);
            }, 0);
          } else {
            window.requestAnimationFrame(function () {
              _this2._redraw(false);
            });
          }
        }
      }
    }, {
      key: '_redraw',
      value: function _redraw() {
        var hidden = arguments.length <= 0 || arguments[0] === undefined ? false : arguments[0];

        if (this.allowRedraw === true) {
          this.body.emitter.emit("initRedraw");

          this.redrawRequested = false;
          var ctx = this.canvas.frame.canvas.getContext('2d');

          // when the container div was hidden, this fixes it back up!
          if (this.canvas.frame.canvas.width === 0 || this.canvas.frame.canvas.height === 0) {
            this.canvas.setSize();
          }

          this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);

          ctx.setTransform(this.pixelRatio, 0, 0, this.pixelRatio, 0, 0);

          // clear the canvas
          var w = this.canvas.frame.canvas.clientWidth;
          var h = this.canvas.frame.canvas.clientHeight;
          ctx.clearRect(0, 0, w, h);

          // if the div is hidden, we stop the redraw here for performance.
          if (this.canvas.frame.clientWidth === 0) {
            return;
          }

          // set scaling and translation
          ctx.save();
          ctx.translate(this.body.view.translation.x, this.body.view.translation.y);
          ctx.scale(this.body.view.scale, this.body.view.scale);

          ctx.beginPath();
          this.body.emitter.emit("beforeDrawing", ctx);
          ctx.closePath();

          if (hidden === false) {
            if (this.dragging === false || this.dragging === true && this.options.hideEdgesOnDrag === false) {
              this._drawEdges(ctx);
            }
          }

          if (this.dragging === false || this.dragging === true && this.options.hideNodesOnDrag === false) {
            this._drawNodes(ctx, hidden);
          }

          ctx.beginPath();
          this.body.emitter.emit("afterDrawing", ctx);
          ctx.closePath();

          // restore original scaling and translation
          ctx.restore();
          if (hidden === true) {
            ctx.clearRect(0, 0, w, h);
          }
        }
      }

      /**
       * Redraw all nodes
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext('2d');
       * @param {CanvasRenderingContext2D}   ctx
       * @param {Boolean} [alwaysShow]
       * @private
       */
    }, {
      key: '_resizeNodes',
      value: function _resizeNodes() {
        var ctx = this.canvas.frame.canvas.getContext('2d');
        if (this.pixelRatio === undefined) {
          this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);
        }
        ctx.setTransform(this.pixelRatio, 0, 0, this.pixelRatio, 0, 0);
        ctx.save();
        ctx.translate(this.body.view.translation.x, this.body.view.translation.y);
        ctx.scale(this.body.view.scale, this.body.view.scale);

        var nodes = this.body.nodes;
        var node = undefined;

        // resize all nodes
        for (var nodeId in nodes) {
          if (nodes.hasOwnProperty(nodeId)) {
            node = nodes[nodeId];
            node.resize(ctx);
            node.updateBoundingBox(ctx, node.selected);
          }
        }

        // restore original scaling and translation
        ctx.restore();
      }

      /**
       * Redraw all nodes
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext('2d');
       * @param {CanvasRenderingContext2D}   ctx
       * @param {Boolean} [alwaysShow]
       * @private
       */
    }, {
      key: '_drawNodes',
      value: function _drawNodes(ctx) {
        var alwaysShow = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var nodes = this.body.nodes;
        var nodeIndices = this.body.nodeIndices;
        var node = undefined;
        var selected = [];
        var margin = 20;
        var topLeft = this.canvas.DOMtoCanvas({ x: -margin, y: -margin });
        var bottomRight = this.canvas.DOMtoCanvas({
          x: this.canvas.frame.canvas.clientWidth + margin,
          y: this.canvas.frame.canvas.clientHeight + margin
        });
        var viewableArea = { top: topLeft.y, left: topLeft.x, bottom: bottomRight.y, right: bottomRight.x };

        // draw unselected nodes;
        for (var i = 0; i < nodeIndices.length; i++) {
          node = nodes[nodeIndices[i]];
          // set selected nodes aside
          if (node.isSelected()) {
            selected.push(nodeIndices[i]);
          } else {
            if (alwaysShow === true) {
              node.draw(ctx);
            } else if (node.isBoundingBoxOverlappingWith(viewableArea) === true) {
              node.draw(ctx);
            } else {
              node.updateBoundingBox(ctx, node.selected);
            }
          }
        }

        // draw the selected nodes on top
        for (var i = 0; i < selected.length; i++) {
          node = nodes[selected[i]];
          node.draw(ctx);
        }
      }

      /**
       * Redraw all edges
       * The 2d context of a HTML canvas can be retrieved by canvas.getContext('2d');
       * @param {CanvasRenderingContext2D}   ctx
       * @private
       */
    }, {
      key: '_drawEdges',
      value: function _drawEdges(ctx) {
        var edges = this.body.edges;
        var edgeIndices = this.body.edgeIndices;
        var edge = undefined;

        for (var i = 0; i < edgeIndices.length; i++) {
          edge = edges[edgeIndices[i]];
          if (edge.connected === true) {
            edge.draw(ctx);
          }
        }
      }

      /**
       * Determine if the browser requires a setTimeout or a requestAnimationFrame. This was required because
       * some implementations (safari and IE9) did not support requestAnimationFrame
       * @private
       */
    }, {
      key: '_determineBrowserMethod',
      value: function _determineBrowserMethod() {
        if (typeof window !== 'undefined') {
          var browserType = navigator.userAgent.toLowerCase();
          this.requiresTimeout = false;
          if (browserType.indexOf('msie 9.0') != -1) {
            // IE 9
            this.requiresTimeout = true;
          } else if (browserType.indexOf('safari') != -1) {
            // safari
            if (browserType.indexOf('chrome') <= -1) {
              this.requiresTimeout = true;
            }
          }
        } else {
          this.requiresTimeout = true;
        }
      }
    }]);

    return CanvasRenderer;
  })();

  exports['default'] = CanvasRenderer;
  module.exports = exports['default'];

/***/ },
/* 102 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var Hammer = __webpack_require__(20);
  var hammerUtil = __webpack_require__(24);

  var util = __webpack_require__(1);

  /**
   * Create the main frame for the Network.
   * This function is executed once when a Network object is created. The frame
   * contains a canvas, and this canvas contains all objects like the axis and
   * nodes.
   * @private
   */

  var Canvas = (function () {
    function Canvas(body) {
      _classCallCheck(this, Canvas);

      this.body = body;
      this.pixelRatio = 1;
      this.resizeTimer = undefined;
      this.resizeFunction = this._onResize.bind(this);
      this.cameraState = {};

      this.options = {};
      this.defaultOptions = {
        autoResize: true,
        height: '100%',
        width: '100%'
      };
      util.extend(this.options, this.defaultOptions);

      this.bindEventListeners();
    }

    _createClass(Canvas, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this = this;

        // bind the events
        this.body.emitter.once("resize", function (obj) {
          if (obj.width !== 0) {
            _this.body.view.translation.x = obj.width * 0.5;
          }
          if (obj.height !== 0) {
            _this.body.view.translation.y = obj.height * 0.5;
          }
        });
        this.body.emitter.on("setSize", this.setSize.bind(this));
        this.body.emitter.on("destroy", function () {
          _this.hammerFrame.destroy();
          _this.hammer.destroy();
          _this._cleanUp();
        });
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        var _this2 = this;

        if (options !== undefined) {
          var fields = ['width', 'height', 'autoResize'];
          util.selectiveDeepExtend(fields, this.options, options);
        }

        if (this.options.autoResize === true) {
          // automatically adapt to a changing size of the browser.
          this._cleanUp();
          this.resizeTimer = setInterval(function () {
            var changed = _this2.setSize();
            if (changed === true) {
              _this2.body.emitter.emit("_requestRedraw");
            }
          }, 1000);
          this.resizeFunction = this._onResize.bind(this);
          util.addEventListener(window, 'resize', this.resizeFunction);
        }
      }
    }, {
      key: '_cleanUp',
      value: function _cleanUp() {
        // automatically adapt to a changing size of the browser.
        if (this.resizeTimer !== undefined) {
          clearInterval(this.resizeTimer);
        }
        util.removeEventListener(window, 'resize', this.resizeFunction);
        this.resizeFunction = undefined;
      }
    }, {
      key: '_onResize',
      value: function _onResize() {
        this.setSize();
        this.body.emitter.emit("_redraw");
      }

      /**
       * Get and store the cameraState
       * @private
       */
    }, {
      key: '_getCameraState',
      value: function _getCameraState() {
        var pixelRatio = arguments.length <= 0 || arguments[0] === undefined ? this.pixelRatio : arguments[0];

        this.cameraState.previousWidth = this.frame.canvas.width / pixelRatio;
        this.cameraState.previousHeight = this.frame.canvas.height / pixelRatio;
        this.cameraState.scale = this.body.view.scale;
        this.cameraState.position = this.DOMtoCanvas({ x: 0.5 * this.frame.canvas.width / pixelRatio, y: 0.5 * this.frame.canvas.height / pixelRatio });
      }

      /**
       * Set the cameraState
       * @private
       */
    }, {
      key: '_setCameraState',
      value: function _setCameraState() {
        if (this.cameraState.scale !== undefined && this.frame.canvas.clientWidth !== 0 && this.frame.canvas.clientHeight !== 0 && this.pixelRatio !== 0 && this.cameraState.previousWidth > 0) {

          var widthRatio = this.frame.canvas.width / this.pixelRatio / this.cameraState.previousWidth;
          var heightRatio = this.frame.canvas.height / this.pixelRatio / this.cameraState.previousHeight;
          var newScale = this.cameraState.scale;

          if (widthRatio != 1 && heightRatio != 1) {
            newScale = this.cameraState.scale * 0.5 * (widthRatio + heightRatio);
          } else if (widthRatio != 1) {
            newScale = this.cameraState.scale * widthRatio;
          } else if (heightRatio != 1) {
            newScale = this.cameraState.scale * heightRatio;
          }

          this.body.view.scale = newScale;
          // this comes from the view module.
          var currentViewCenter = this.DOMtoCanvas({
            x: 0.5 * this.frame.canvas.clientWidth,
            y: 0.5 * this.frame.canvas.clientHeight
          });

          var distanceFromCenter = { // offset from view, distance view has to change by these x and y to center the node
            x: currentViewCenter.x - this.cameraState.position.x,
            y: currentViewCenter.y - this.cameraState.position.y
          };
          this.body.view.translation.x += distanceFromCenter.x * this.body.view.scale;
          this.body.view.translation.y += distanceFromCenter.y * this.body.view.scale;
        }
      }
    }, {
      key: '_prepareValue',
      value: function _prepareValue(value) {
        if (typeof value === 'number') {
          return value + 'px';
        } else if (typeof value === 'string') {
          if (value.indexOf('%') !== -1 || value.indexOf('px') !== -1) {
            return value;
          } else if (value.indexOf('%') === -1) {
            return value + 'px';
          }
        }
        throw new Error('Could not use the value supplied for width or height:' + value);
      }

      /**
       * Create the HTML
       */
    }, {
      key: '_create',
      value: function _create() {
        // remove all elements from the container element.
        while (this.body.container.hasChildNodes()) {
          this.body.container.removeChild(this.body.container.firstChild);
        }

        this.frame = document.createElement('div');
        this.frame.className = 'vis-network';
        this.frame.style.position = 'relative';
        this.frame.style.overflow = 'hidden';
        this.frame.tabIndex = 900; // tab index is required for keycharm to bind keystrokes to the div instead of the window

        //////////////////////////////////////////////////////////////////

        this.frame.canvas = document.createElement("canvas");
        this.frame.canvas.style.position = 'relative';
        this.frame.appendChild(this.frame.canvas);

        if (!this.frame.canvas.getContext) {
          var noCanvas = document.createElement('DIV');
          noCanvas.style.color = 'red';
          noCanvas.style.fontWeight = 'bold';
          noCanvas.style.padding = '10px';
          noCanvas.innerHTML = 'Error: your browser does not support HTML canvas';
          this.frame.canvas.appendChild(noCanvas);
        } else {
          var ctx = this.frame.canvas.getContext("2d");
          this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);

          this.frame.canvas.getContext("2d").setTransform(this.pixelRatio, 0, 0, this.pixelRatio, 0, 0);
        }

        // add the frame to the container element
        this.body.container.appendChild(this.frame);

        this.body.view.scale = 1;
        this.body.view.translation = { x: 0.5 * this.frame.canvas.clientWidth, y: 0.5 * this.frame.canvas.clientHeight };

        this._bindHammer();
      }

      /**
       * This function binds hammer, it can be repeated over and over due to the uniqueness check.
       * @private
       */
    }, {
      key: '_bindHammer',
      value: function _bindHammer() {
        var _this3 = this;

        if (this.hammer !== undefined) {
          this.hammer.destroy();
        }
        this.drag = {};
        this.pinch = {};

        // init hammer
        this.hammer = new Hammer(this.frame.canvas);
        this.hammer.get('pinch').set({ enable: true });
        // enable to get better response, todo: test on mobile.
        this.hammer.get('pan').set({ threshold: 5, direction: 30 }); // 30 is ALL_DIRECTIONS in hammer.

        hammerUtil.onTouch(this.hammer, function (event) {
          _this3.body.eventListeners.onTouch(event);
        });
        this.hammer.on('tap', function (event) {
          _this3.body.eventListeners.onTap(event);
        });
        this.hammer.on('doubletap', function (event) {
          _this3.body.eventListeners.onDoubleTap(event);
        });
        this.hammer.on('press', function (event) {
          _this3.body.eventListeners.onHold(event);
        });
        this.hammer.on('panstart', function (event) {
          _this3.body.eventListeners.onDragStart(event);
        });
        this.hammer.on('panmove', function (event) {
          _this3.body.eventListeners.onDrag(event);
        });
        this.hammer.on('panend', function (event) {
          _this3.body.eventListeners.onDragEnd(event);
        });
        this.hammer.on('pinch', function (event) {
          _this3.body.eventListeners.onPinch(event);
        });

        // TODO: neatly cleanup these handlers when re-creating the Canvas, IF these are done with hammer, event.stopPropagation will not work?
        this.frame.canvas.addEventListener('mousewheel', function (event) {
          _this3.body.eventListeners.onMouseWheel(event);
        });
        this.frame.canvas.addEventListener('DOMMouseScroll', function (event) {
          _this3.body.eventListeners.onMouseWheel(event);
        });

        this.frame.canvas.addEventListener('mousemove', function (event) {
          _this3.body.eventListeners.onMouseMove(event);
        });
        this.frame.canvas.addEventListener('contextmenu', function (event) {
          _this3.body.eventListeners.onContext(event);
        });

        this.hammerFrame = new Hammer(this.frame);
        hammerUtil.onRelease(this.hammerFrame, function (event) {
          _this3.body.eventListeners.onRelease(event);
        });
      }

      /**
       * Set a new size for the network
       * @param {string} width   Width in pixels or percentage (for example '800px'
       *                         or '50%')
       * @param {string} height  Height in pixels or percentage  (for example '400px'
       *                         or '30%')
       */
    }, {
      key: 'setSize',
      value: function setSize() {
        var width = arguments.length <= 0 || arguments[0] === undefined ? this.options.width : arguments[0];
        var height = arguments.length <= 1 || arguments[1] === undefined ? this.options.height : arguments[1];

        width = this._prepareValue(width);
        height = this._prepareValue(height);

        var emitEvent = false;
        var oldWidth = this.frame.canvas.width;
        var oldHeight = this.frame.canvas.height;

        // update the pixel ratio
        var ctx = this.frame.canvas.getContext("2d");
        var previousRatio = this.pixelRatio; // we cache this because the camera state storage needs the old value
        this.pixelRatio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1);

        if (width != this.options.width || height != this.options.height || this.frame.style.width != width || this.frame.style.height != height) {
          this._getCameraState(previousRatio);

          this.frame.style.width = width;
          this.frame.style.height = height;

          this.frame.canvas.style.width = '100%';
          this.frame.canvas.style.height = '100%';

          this.frame.canvas.width = Math.round(this.frame.canvas.clientWidth * this.pixelRatio);
          this.frame.canvas.height = Math.round(this.frame.canvas.clientHeight * this.pixelRatio);

          this.options.width = width;
          this.options.height = height;

          emitEvent = true;
        } else {
          // this would adapt the width of the canvas to the width from 100% if and only if
          // there is a change.

          // store the camera if there is a change in size.
          if (this.frame.canvas.width != Math.round(this.frame.canvas.clientWidth * this.pixelRatio) || this.frame.canvas.height != Math.round(this.frame.canvas.clientHeight * this.pixelRatio)) {
            this._getCameraState(previousRatio);
          }

          if (this.frame.canvas.width != Math.round(this.frame.canvas.clientWidth * this.pixelRatio)) {
            this.frame.canvas.width = Math.round(this.frame.canvas.clientWidth * this.pixelRatio);
            emitEvent = true;
          }
          if (this.frame.canvas.height != Math.round(this.frame.canvas.clientHeight * this.pixelRatio)) {
            this.frame.canvas.height = Math.round(this.frame.canvas.clientHeight * this.pixelRatio);
            emitEvent = true;
          }
        }

        if (emitEvent === true) {
          this.body.emitter.emit('resize', {
            width: Math.round(this.frame.canvas.width / this.pixelRatio),
            height: Math.round(this.frame.canvas.height / this.pixelRatio),
            oldWidth: Math.round(oldWidth / this.pixelRatio),
            oldHeight: Math.round(oldHeight / this.pixelRatio)
          });

          // restore the camera on change.
          this._setCameraState();
        }

        return emitEvent;
      }
    }, {
      key: '_XconvertDOMtoCanvas',

      /**
       * Convert the X coordinate in DOM-space (coordinate point in browser relative to the container div) to
       * the X coordinate in canvas-space (the simulation sandbox, which the camera looks upon)
       * @param {number} x
       * @returns {number}
       * @private
       */
      value: function _XconvertDOMtoCanvas(x) {
        return (x - this.body.view.translation.x) / this.body.view.scale;
      }

      /**
       * Convert the X coordinate in canvas-space (the simulation sandbox, which the camera looks upon) to
       * the X coordinate in DOM-space (coordinate point in browser relative to the container div)
       * @param {number} x
       * @returns {number}
       * @private
       */
    }, {
      key: '_XconvertCanvasToDOM',
      value: function _XconvertCanvasToDOM(x) {
        return x * this.body.view.scale + this.body.view.translation.x;
      }

      /**
       * Convert the Y coordinate in DOM-space (coordinate point in browser relative to the container div) to
       * the Y coordinate in canvas-space (the simulation sandbox, which the camera looks upon)
       * @param {number} y
       * @returns {number}
       * @private
       */
    }, {
      key: '_YconvertDOMtoCanvas',
      value: function _YconvertDOMtoCanvas(y) {
        return (y - this.body.view.translation.y) / this.body.view.scale;
      }

      /**
       * Convert the Y coordinate in canvas-space (the simulation sandbox, which the camera looks upon) to
       * the Y coordinate in DOM-space (coordinate point in browser relative to the container div)
       * @param {number} y
       * @returns {number}
       * @private
       */
    }, {
      key: '_YconvertCanvasToDOM',
      value: function _YconvertCanvasToDOM(y) {
        return y * this.body.view.scale + this.body.view.translation.y;
      }

      /**
       *
       * @param {object} pos   = {x: number, y: number}
       * @returns {{x: number, y: number}}
       * @constructor
       */
    }, {
      key: 'canvasToDOM',
      value: function canvasToDOM(pos) {
        return { x: this._XconvertCanvasToDOM(pos.x), y: this._YconvertCanvasToDOM(pos.y) };
      }

      /**
       *
       * @param {object} pos   = {x: number, y: number}
       * @returns {{x: number, y: number}}
       * @constructor
       */
    }, {
      key: 'DOMtoCanvas',
      value: function DOMtoCanvas(pos) {
        return { x: this._XconvertDOMtoCanvas(pos.x), y: this._YconvertDOMtoCanvas(pos.y) };
      }
    }]);

    return Canvas;
  })();

  exports['default'] = Canvas;
  module.exports = exports['default'];

/***/ },
/* 103 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _NetworkUtil = __webpack_require__(99);

  var _NetworkUtil2 = _interopRequireDefault(_NetworkUtil);

  var util = __webpack_require__(1);

  var View = (function () {
    function View(body, canvas) {
      var _this = this;

      _classCallCheck(this, View);

      this.body = body;
      this.canvas = canvas;

      this.animationSpeed = 1 / this.renderRefreshRate;
      this.animationEasingFunction = "easeInOutQuint";
      this.easingTime = 0;
      this.sourceScale = 0;
      this.targetScale = 0;
      this.sourceTranslation = 0;
      this.targetTranslation = 0;
      this.lockedOnNodeId = undefined;
      this.lockedOnNodeOffset = undefined;
      this.touchTime = 0;

      this.viewFunction = undefined;

      this.body.emitter.on("fit", this.fit.bind(this));
      this.body.emitter.on("animationFinished", function () {
        _this.body.emitter.emit("_stopRendering");
      });
      this.body.emitter.on("unlockNode", this.releaseNode.bind(this));
    }

    _createClass(View, [{
      key: 'setOptions',
      value: function setOptions() {
        var options = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

        this.options = options;
      }

      /**
       * This function zooms out to fit all data on screen based on amount of nodes
       * @param {Object} Options
       * @param {Boolean} [initialZoom]  | zoom based on fitted formula or range, true = fitted, default = false;
       */
    }, {
      key: 'fit',
      value: function fit() {
        var options = arguments.length <= 0 || arguments[0] === undefined ? { nodes: [] } : arguments[0];
        var initialZoom = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];

        var range = undefined;
        var zoomLevel = undefined;
        if (options.nodes === undefined || options.nodes.length === 0) {
          options.nodes = this.body.nodeIndices;
        }

        if (initialZoom === true) {
          // check if more than half of the nodes have a predefined position. If so, we use the range, not the approximation.
          var positionDefined = 0;
          for (var nodeId in this.body.nodes) {
            if (this.body.nodes.hasOwnProperty(nodeId)) {
              var node = this.body.nodes[nodeId];
              if (node.predefinedPosition === true) {
                positionDefined += 1;
              }
            }
          }
          if (positionDefined > 0.5 * this.body.nodeIndices.length) {
            this.fit(options, false);
            return;
          }

          range = _NetworkUtil2['default'].getRange(this.body.nodes, options.nodes);

          var numberOfNodes = this.body.nodeIndices.length;
          zoomLevel = 12.662 / (numberOfNodes + 7.4147) + 0.0964822; // this is obtained from fitting a dataset from 5 points with scale levels that looked good.

          // correct for larger canvasses.
          var factor = Math.min(this.canvas.frame.canvas.clientWidth / 600, this.canvas.frame.canvas.clientHeight / 600);
          zoomLevel *= factor;
        } else {
          this.body.emitter.emit("_resizeNodes");
          range = _NetworkUtil2['default'].getRange(this.body.nodes, options.nodes);

          var xDistance = Math.abs(range.maxX - range.minX) * 1.1;
          var yDistance = Math.abs(range.maxY - range.minY) * 1.1;

          var xZoomLevel = this.canvas.frame.canvas.clientWidth / xDistance;
          var yZoomLevel = this.canvas.frame.canvas.clientHeight / yDistance;

          zoomLevel = xZoomLevel <= yZoomLevel ? xZoomLevel : yZoomLevel;
        }

        if (zoomLevel > 1.0) {
          zoomLevel = 1.0;
        } else if (zoomLevel === 0) {
          zoomLevel = 1.0;
        }

        var center = _NetworkUtil2['default'].findCenter(range);
        var animationOptions = { position: center, scale: zoomLevel, animation: options.animation };
        this.moveTo(animationOptions);
      }

      // animation

      /**
       * Center a node in view.
       *
       * @param {Number} nodeId
       * @param {Number} [options]
       */
    }, {
      key: 'focus',
      value: function focus(nodeId) {
        var options = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        if (this.body.nodes[nodeId] !== undefined) {
          var nodePosition = { x: this.body.nodes[nodeId].x, y: this.body.nodes[nodeId].y };
          options.position = nodePosition;
          options.lockedOnNode = nodeId;

          this.moveTo(options);
        } else {
          console.log("Node: " + nodeId + " cannot be found.");
        }
      }

      /**
       *
       * @param {Object} options  |  options.offset   = {x:Number, y:Number}   // offset from the center in DOM pixels
       *                          |  options.scale    = Number                 // scale to move to
       *                          |  options.position = {x:Number, y:Number}   // position to move to
       *                          |  options.animation = {duration:Number, easingFunction:String} || Boolean   // position to move to
       */
    }, {
      key: 'moveTo',
      value: function moveTo(options) {
        if (options === undefined) {
          options = {};
          return;
        }
        if (options.offset === undefined) {
          options.offset = { x: 0, y: 0 };
        }
        if (options.offset.x === undefined) {
          options.offset.x = 0;
        }
        if (options.offset.y === undefined) {
          options.offset.y = 0;
        }
        if (options.scale === undefined) {
          options.scale = this.body.view.scale;
        }
        if (options.position === undefined) {
          options.position = this.getViewPosition();
        }
        if (options.animation === undefined) {
          options.animation = { duration: 0 };
        }
        if (options.animation === false) {
          options.animation = { duration: 0 };
        }
        if (options.animation === true) {
          options.animation = {};
        }
        if (options.animation.duration === undefined) {
          options.animation.duration = 1000;
        } // default duration
        if (options.animation.easingFunction === undefined) {
          options.animation.easingFunction = "easeInOutQuad";
        } // default easing function

        this.animateView(options);
      }

      /**
       *
       * @param {Object} options  |  options.offset   = {x:Number, y:Number}   // offset from the center in DOM pixels
       *                          |  options.time     = Number                 // animation time in milliseconds
       *                          |  options.scale    = Number                 // scale to animate to
       *                          |  options.position = {x:Number, y:Number}   // position to animate to
       *                          |  options.easingFunction = String           // linear, easeInQuad, easeOutQuad, easeInOutQuad,
       *                                                                       // easeInCubic, easeOutCubic, easeInOutCubic,
       *                                                                       // easeInQuart, easeOutQuart, easeInOutQuart,
       *                                                                       // easeInQuint, easeOutQuint, easeInOutQuint
       */
    }, {
      key: 'animateView',
      value: function animateView(options) {
        if (options === undefined) {
          return;
        }
        this.animationEasingFunction = options.animation.easingFunction;
        // release if something focussed on the node
        this.releaseNode();
        if (options.locked === true) {
          this.lockedOnNodeId = options.lockedOnNode;
          this.lockedOnNodeOffset = options.offset;
        }

        // forcefully complete the old animation if it was still running
        if (this.easingTime != 0) {
          this._transitionRedraw(true); // by setting easingtime to 1, we finish the animation.
        }

        this.sourceScale = this.body.view.scale;
        this.sourceTranslation = this.body.view.translation;
        this.targetScale = options.scale;

        // set the scale so the viewCenter is based on the correct zoom level. This is overridden in the transitionRedraw
        // but at least then we'll have the target transition
        this.body.view.scale = this.targetScale;
        var viewCenter = this.canvas.DOMtoCanvas({ x: 0.5 * this.canvas.frame.canvas.clientWidth, y: 0.5 * this.canvas.frame.canvas.clientHeight });

        var distanceFromCenter = { // offset from view, distance view has to change by these x and y to center the node
          x: viewCenter.x - options.position.x,
          y: viewCenter.y - options.position.y
        };
        this.targetTranslation = {
          x: this.sourceTranslation.x + distanceFromCenter.x * this.targetScale + options.offset.x,
          y: this.sourceTranslation.y + distanceFromCenter.y * this.targetScale + options.offset.y
        };

        // if the time is set to 0, don't do an animation
        if (options.animation.duration === 0) {
          if (this.lockedOnNodeId != undefined) {
            this.viewFunction = this._lockedRedraw.bind(this);
            this.body.emitter.on("initRedraw", this.viewFunction);
          } else {
            this.body.view.scale = this.targetScale;
            this.body.view.translation = this.targetTranslation;
            this.body.emitter.emit("_requestRedraw");
          }
        } else {
          this.animationSpeed = 1 / (60 * options.animation.duration * 0.001) || 1 / 60; // 60 for 60 seconds, 0.001 for milli's
          this.animationEasingFunction = options.animation.easingFunction;

          this.viewFunction = this._transitionRedraw.bind(this);
          this.body.emitter.on("initRedraw", this.viewFunction);
          this.body.emitter.emit("_startRendering");
        }
      }

      /**
       * used to animate smoothly by hijacking the redraw function.
       * @private
       */
    }, {
      key: '_lockedRedraw',
      value: function _lockedRedraw() {
        var nodePosition = { x: this.body.nodes[this.lockedOnNodeId].x, y: this.body.nodes[this.lockedOnNodeId].y };
        var viewCenter = this.canvas.DOMtoCanvas({ x: 0.5 * this.canvas.frame.canvas.clientWidth, y: 0.5 * this.canvas.frame.canvas.clientHeight });
        var distanceFromCenter = { // offset from view, distance view has to change by these x and y to center the node
          x: viewCenter.x - nodePosition.x,
          y: viewCenter.y - nodePosition.y
        };
        var sourceTranslation = this.body.view.translation;
        var targetTranslation = {
          x: sourceTranslation.x + distanceFromCenter.x * this.body.view.scale + this.lockedOnNodeOffset.x,
          y: sourceTranslation.y + distanceFromCenter.y * this.body.view.scale + this.lockedOnNodeOffset.y
        };

        this.body.view.translation = targetTranslation;
      }
    }, {
      key: 'releaseNode',
      value: function releaseNode() {
        if (this.lockedOnNodeId !== undefined && this.viewFunction !== undefined) {
          this.body.emitter.off("initRedraw", this.viewFunction);
          this.lockedOnNodeId = undefined;
          this.lockedOnNodeOffset = undefined;
        }
      }

      /**
       *
       * @param easingTime
       * @private
       */
    }, {
      key: '_transitionRedraw',
      value: function _transitionRedraw() {
        var finished = arguments.length <= 0 || arguments[0] === undefined ? false : arguments[0];

        this.easingTime += this.animationSpeed;
        this.easingTime = finished === true ? 1.0 : this.easingTime;

        var progress = util.easingFunctions[this.animationEasingFunction](this.easingTime);

        this.body.view.scale = this.sourceScale + (this.targetScale - this.sourceScale) * progress;
        this.body.view.translation = {
          x: this.sourceTranslation.x + (this.targetTranslation.x - this.sourceTranslation.x) * progress,
          y: this.sourceTranslation.y + (this.targetTranslation.y - this.sourceTranslation.y) * progress
        };

        // cleanup
        if (this.easingTime >= 1.0) {
          this.body.emitter.off("initRedraw", this.viewFunction);
          this.easingTime = 0;
          if (this.lockedOnNodeId != undefined) {
            this.viewFunction = this._lockedRedraw.bind(this);
            this.body.emitter.on("initRedraw", this.viewFunction);
          }
          this.body.emitter.emit("animationFinished");
        }
      }
    }, {
      key: 'getScale',
      value: function getScale() {
        return this.body.view.scale;
      }
    }, {
      key: 'getViewPosition',
      value: function getViewPosition() {
        return this.canvas.DOMtoCanvas({ x: 0.5 * this.canvas.frame.canvas.clientWidth, y: 0.5 * this.canvas.frame.canvas.clientHeight });
      }
    }]);

    return View;
  })();

  exports['default'] = View;
  module.exports = exports['default'];

/***/ },
/* 104 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _componentsNavigationHandler = __webpack_require__(105);

  var _componentsNavigationHandler2 = _interopRequireDefault(_componentsNavigationHandler);

  var _componentsPopup = __webpack_require__(106);

  var _componentsPopup2 = _interopRequireDefault(_componentsPopup);

  var util = __webpack_require__(1);

  var InteractionHandler = (function () {
    function InteractionHandler(body, canvas, selectionHandler) {
      _classCallCheck(this, InteractionHandler);

      this.body = body;
      this.canvas = canvas;
      this.selectionHandler = selectionHandler;
      this.navigationHandler = new _componentsNavigationHandler2['default'](body, canvas);

      // bind the events from hammer to functions in this object
      this.body.eventListeners.onTap = this.onTap.bind(this);
      this.body.eventListeners.onTouch = this.onTouch.bind(this);
      this.body.eventListeners.onDoubleTap = this.onDoubleTap.bind(this);
      this.body.eventListeners.onHold = this.onHold.bind(this);
      this.body.eventListeners.onDragStart = this.onDragStart.bind(this);
      this.body.eventListeners.onDrag = this.onDrag.bind(this);
      this.body.eventListeners.onDragEnd = this.onDragEnd.bind(this);
      this.body.eventListeners.onMouseWheel = this.onMouseWheel.bind(this);
      this.body.eventListeners.onPinch = this.onPinch.bind(this);
      this.body.eventListeners.onMouseMove = this.onMouseMove.bind(this);
      this.body.eventListeners.onRelease = this.onRelease.bind(this);
      this.body.eventListeners.onContext = this.onContext.bind(this);

      this.touchTime = 0;
      this.drag = {};
      this.pinch = {};
      this.popup = undefined;
      this.popupObj = undefined;
      this.popupTimer = undefined;

      this.body.functions.getPointer = this.getPointer.bind(this);

      this.options = {};
      this.defaultOptions = {
        dragNodes: true,
        dragView: true,
        hover: false,
        keyboard: {
          enabled: false,
          speed: { x: 10, y: 10, zoom: 0.02 },
          bindToWindow: true
        },
        navigationButtons: false,
        tooltipDelay: 300,
        zoomView: true
      };
      util.extend(this.options, this.defaultOptions);

      this.bindEventListeners();
    }

    _createClass(InteractionHandler, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this = this;

        this.body.emitter.on('destroy', function () {
          clearTimeout(_this.popupTimer);
          delete _this.body.functions.getPointer;
        });
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          // extend all but the values in fields
          var fields = ['hideEdgesOnDrag', 'hideNodesOnDrag', 'keyboard', 'multiselect', 'selectable', 'selectConnectedEdges'];
          util.selectiveNotDeepExtend(fields, this.options, options);

          // merge the keyboard options in.
          util.mergeOptions(this.options, options, 'keyboard');

          if (options.tooltip) {
            util.extend(this.options.tooltip, options.tooltip);
            if (options.tooltip.color) {
              this.options.tooltip.color = util.parseColor(options.tooltip.color);
            }
          }
        }

        this.navigationHandler.setOptions(this.options);
      }

      /**
       * Get the pointer location from a touch location
       * @param {{x: Number, y: Number}} touch
       * @return {{x: Number, y: Number}} pointer
       * @private
       */
    }, {
      key: 'getPointer',
      value: function getPointer(touch) {
        return {
          x: touch.x - util.getAbsoluteLeft(this.canvas.frame.canvas),
          y: touch.y - util.getAbsoluteTop(this.canvas.frame.canvas)
        };
      }

      /**
       * On start of a touch gesture, store the pointer
       * @param event
       * @private
       */
    }, {
      key: 'onTouch',
      value: function onTouch(event) {
        if (new Date().valueOf() - this.touchTime > 50) {
          this.drag.pointer = this.getPointer(event.center);
          this.drag.pinched = false;
          this.pinch.scale = this.body.view.scale;
          // to avoid double fireing of this event because we have two hammer instances. (on canvas and on frame)
          this.touchTime = new Date().valueOf();
        }
      }

      /**
       * handle tap/click event: select/unselect a node
       * @private
       */
    }, {
      key: 'onTap',
      value: function onTap(event) {
        var pointer = this.getPointer(event.center);
        var multiselect = this.selectionHandler.options.multiselect && (event.changedPointers[0].ctrlKey || event.changedPointers[0].metaKey);

        this.checkSelectionChanges(pointer, event, multiselect);
        this.selectionHandler._generateClickEvent('click', event, pointer);
      }

      /**
       * handle doubletap event
       * @private
       */
    }, {
      key: 'onDoubleTap',
      value: function onDoubleTap(event) {
        var pointer = this.getPointer(event.center);
        this.selectionHandler._generateClickEvent('doubleClick', event, pointer);
      }

      /**
       * handle long tap event: multi select nodes
       * @private
       */
    }, {
      key: 'onHold',
      value: function onHold(event) {
        var pointer = this.getPointer(event.center);
        var multiselect = this.selectionHandler.options.multiselect;

        this.checkSelectionChanges(pointer, event, multiselect);

        this.selectionHandler._generateClickEvent('click', event, pointer);
        this.selectionHandler._generateClickEvent('hold', event, pointer);
      }

      /**
       * handle the release of the screen
       *
       * @private
       */
    }, {
      key: 'onRelease',
      value: function onRelease(event) {
        if (new Date().valueOf() - this.touchTime > 10) {
          var pointer = this.getPointer(event.center);
          this.selectionHandler._generateClickEvent('release', event, pointer);
          // to avoid double fireing of this event because we have two hammer instances. (on canvas and on frame)
          this.touchTime = new Date().valueOf();
        }
      }
    }, {
      key: 'onContext',
      value: function onContext(event) {
        var pointer = this.getPointer({ x: event.clientX, y: event.clientY });
        this.selectionHandler._generateClickEvent('oncontext', event, pointer);
      }

      /**
       *
       * @param pointer
       * @param add
       */
    }, {
      key: 'checkSelectionChanges',
      value: function checkSelectionChanges(pointer, event) {
        var add = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

        var previouslySelectedEdgeCount = this.selectionHandler._getSelectedEdgeCount();
        var previouslySelectedNodeCount = this.selectionHandler._getSelectedNodeCount();
        var previousSelection = this.selectionHandler.getSelection();
        var selected = undefined;
        if (add === true) {
          selected = this.selectionHandler.selectAdditionalOnPoint(pointer);
        } else {
          selected = this.selectionHandler.selectOnPoint(pointer);
        }
        var selectedEdgesCount = this.selectionHandler._getSelectedEdgeCount();
        var selectedNodesCount = this.selectionHandler._getSelectedNodeCount();
        var currentSelection = this.selectionHandler.getSelection();

        var _determineIfDifferent2 = this._determineIfDifferent(previousSelection, currentSelection);

        var nodesChanges = _determineIfDifferent2.nodesChanges;
        var edgesChanges = _determineIfDifferent2.edgesChanges;

        var nodeSelected = false;

        if (selectedNodesCount - previouslySelectedNodeCount > 0) {
          // node was selected
          this.selectionHandler._generateClickEvent('selectNode', event, pointer);
          selected = true;
          nodeSelected = true;
        } else if (selectedNodesCount - previouslySelectedNodeCount < 0) {
          // node was deselected
          this.selectionHandler._generateClickEvent('deselectNode', event, pointer, previousSelection);
          selected = true;
        } else if (selectedNodesCount === previouslySelectedNodeCount && nodesChanges === true) {
          this.selectionHandler._generateClickEvent('deselectNode', event, pointer, previousSelection);
          this.selectionHandler._generateClickEvent('selectNode', event, pointer);
          nodeSelected = true;
          selected = true;
        }

        // handle the selected edges
        if (selectedEdgesCount - previouslySelectedEdgeCount > 0 && nodeSelected === false) {
          // edge was selected
          this.selectionHandler._generateClickEvent('selectEdge', event, pointer);
          selected = true;
        } else if (selectedEdgesCount - previouslySelectedEdgeCount < 0) {
          // edge was deselected
          this.selectionHandler._generateClickEvent('deselectEdge', event, pointer, previousSelection);
          selected = true;
        } else if (selectedEdgesCount === previouslySelectedEdgeCount && edgesChanges === true) {
          this.selectionHandler._generateClickEvent('deselectEdge', event, pointer, previousSelection);
          this.selectionHandler._generateClickEvent('selectEdge', event, pointer);
          selected = true;
        }

        // fire the select event if anything has been selected or deselected
        if (selected === true) {
          // select or unselect
          this.selectionHandler._generateClickEvent('select', event, pointer);
        }
      }

      /**
       * This function checks if the nodes and edges previously selected have changed.
       * @param previousSelection
       * @param currentSelection
       * @returns {{nodesChanges: boolean, edgesChanges: boolean}}
       * @private
       */
    }, {
      key: '_determineIfDifferent',
      value: function _determineIfDifferent(previousSelection, currentSelection) {
        var nodesChanges = false;
        var edgesChanges = false;

        for (var i = 0; i < previousSelection.nodes.length; i++) {
          if (currentSelection.nodes.indexOf(previousSelection.nodes[i]) === -1) {
            nodesChanges = true;
          }
        }
        for (var i = 0; i < currentSelection.nodes.length; i++) {
          if (previousSelection.nodes.indexOf(previousSelection.nodes[i]) === -1) {
            nodesChanges = true;
          }
        }
        for (var i = 0; i < previousSelection.edges.length; i++) {
          if (currentSelection.edges.indexOf(previousSelection.edges[i]) === -1) {
            edgesChanges = true;
          }
        }
        for (var i = 0; i < currentSelection.edges.length; i++) {
          if (previousSelection.edges.indexOf(previousSelection.edges[i]) === -1) {
            edgesChanges = true;
          }
        }

        return { nodesChanges: nodesChanges, edgesChanges: edgesChanges };
      }

      /**
       * This function is called by onDragStart.
       * It is separated out because we can then overload it for the datamanipulation system.
       *
       * @private
       */
    }, {
      key: 'onDragStart',
      value: function onDragStart(event) {
        //in case the touch event was triggered on an external div, do the initial touch now.
        if (this.drag.pointer === undefined) {
          this.onTouch(event);
        }

        // note: drag.pointer is set in onTouch to get the initial touch location
        var node = this.selectionHandler.getNodeAt(this.drag.pointer);

        this.drag.dragging = true;
        this.drag.selection = [];
        this.drag.translation = util.extend({}, this.body.view.translation); // copy the object
        this.drag.nodeId = undefined;

        if (node !== undefined && this.options.dragNodes === true) {
          this.drag.nodeId = node.id;
          // select the clicked node if not yet selected
          if (node.isSelected() === false) {
            this.selectionHandler.unselectAll();
            this.selectionHandler.selectObject(node);
          }

          // after select to contain the node
          this.selectionHandler._generateClickEvent('dragStart', event, this.drag.pointer);

          var selection = this.selectionHandler.selectionObj.nodes;
          // create an array with the selected nodes and their original location and status
          for (var nodeId in selection) {
            if (selection.hasOwnProperty(nodeId)) {
              var object = selection[nodeId];
              var s = {
                id: object.id,
                node: object,

                // store original x, y, xFixed and yFixed, make the node temporarily Fixed
                x: object.x,
                y: object.y,
                xFixed: object.options.fixed.x,
                yFixed: object.options.fixed.y
              };

              object.options.fixed.x = true;
              object.options.fixed.y = true;

              this.drag.selection.push(s);
            }
          }
        } else {
          // fallback if no node is selected and thus the view is dragged.
          this.selectionHandler._generateClickEvent('dragStart', event, this.drag.pointer, undefined, true);
        }
      }

      /**
       * handle drag event
       * @private
       */
    }, {
      key: 'onDrag',
      value: function onDrag(event) {
        var _this2 = this;

        if (this.drag.pinched === true) {
          return;
        }

        // remove the focus on node if it is focussed on by the focusOnNode
        this.body.emitter.emit('unlockNode');

        var pointer = this.getPointer(event.center);

        var selection = this.drag.selection;
        if (selection && selection.length && this.options.dragNodes === true) {
          (function () {
            _this2.selectionHandler._generateClickEvent('dragging', event, pointer);

            // calculate delta's and new location
            var deltaX = pointer.x - _this2.drag.pointer.x;
            var deltaY = pointer.y - _this2.drag.pointer.y;

            // update position of all selected nodes
            selection.forEach(function (selection) {
              var node = selection.node;
              // only move the node if it was not fixed initially
              if (selection.xFixed === false) {
                node.x = _this2.canvas._XconvertDOMtoCanvas(_this2.canvas._XconvertCanvasToDOM(selection.x) + deltaX);
              }
              // only move the node if it was not fixed initially
              if (selection.yFixed === false) {
                node.y = _this2.canvas._YconvertDOMtoCanvas(_this2.canvas._YconvertCanvasToDOM(selection.y) + deltaY);
              }
            });

            // start the simulation of the physics
            _this2.body.emitter.emit('startSimulation');
          })();
        } else {
          // move the network
          if (this.options.dragView === true) {
            this.selectionHandler._generateClickEvent('dragging', event, pointer, undefined, true);

            // if the drag was not started properly because the click started outside the network div, start it now.
            if (this.drag.pointer === undefined) {
              this.onDragStart(event);
              return;
            }
            var diffX = pointer.x - this.drag.pointer.x;
            var diffY = pointer.y - this.drag.pointer.y;

            this.body.view.translation = { x: this.drag.translation.x + diffX, y: this.drag.translation.y + diffY };
            this.body.emitter.emit('_redraw');
          }
        }
      }

      /**
       * handle drag start event
       * @private
       */
    }, {
      key: 'onDragEnd',
      value: function onDragEnd(event) {
        this.drag.dragging = false;
        var selection = this.drag.selection;
        if (selection && selection.length) {
          selection.forEach(function (s) {
            // restore original xFixed and yFixed
            s.node.options.fixed.x = s.xFixed;
            s.node.options.fixed.y = s.yFixed;
          });
          this.selectionHandler._generateClickEvent('dragEnd', event, this.getPointer(event.center));
          this.body.emitter.emit('startSimulation');
        } else {
          this.selectionHandler._generateClickEvent('dragEnd', event, this.getPointer(event.center), undefined, true);
          this.body.emitter.emit('_requestRedraw');
        }
      }

      /**
       * Handle pinch event
       * @param event
       * @private
       */
    }, {
      key: 'onPinch',
      value: function onPinch(event) {
        var pointer = this.getPointer(event.center);

        this.drag.pinched = true;
        if (this.pinch['scale'] === undefined) {
          this.pinch.scale = 1;
        }

        // TODO: enabled moving while pinching?
        var scale = this.pinch.scale * event.scale;
        this.zoom(scale, pointer);
      }

      /**
       * Zoom the network in or out
       * @param {Number} scale a number around 1, and between 0.01 and 10
       * @param {{x: Number, y: Number}} pointer    Position on screen
       * @return {Number} appliedScale    scale is limited within the boundaries
       * @private
       */
    }, {
      key: 'zoom',
      value: function zoom(scale, pointer) {
        if (this.options.zoomView === true) {
          var scaleOld = this.body.view.scale;
          if (scale < 0.00001) {
            scale = 0.00001;
          }
          if (scale > 10) {
            scale = 10;
          }

          var preScaleDragPointer = undefined;
          if (this.drag !== undefined) {
            if (this.drag.dragging === true) {
              preScaleDragPointer = this.canvas.DOMtoCanvas(this.drag.pointer);
            }
          }
          // + this.canvas.frame.canvas.clientHeight / 2
          var translation = this.body.view.translation;

          var scaleFrac = scale / scaleOld;
          var tx = (1 - scaleFrac) * pointer.x + translation.x * scaleFrac;
          var ty = (1 - scaleFrac) * pointer.y + translation.y * scaleFrac;

          this.body.view.scale = scale;
          this.body.view.translation = { x: tx, y: ty };

          if (preScaleDragPointer != undefined) {
            var postScaleDragPointer = this.canvas.canvasToDOM(preScaleDragPointer);
            this.drag.pointer.x = postScaleDragPointer.x;
            this.drag.pointer.y = postScaleDragPointer.y;
          }

          this.body.emitter.emit('_requestRedraw');

          if (scaleOld < scale) {
            this.body.emitter.emit('zoom', { direction: '+', scale: this.body.view.scale });
          } else {
            this.body.emitter.emit('zoom', { direction: '-', scale: this.body.view.scale });
          }
        }
      }

      /**
       * Event handler for mouse wheel event, used to zoom the timeline
       * See http://adomas.org/javascript-mouse-wheel/
       *     https://github.com/EightMedia/hammer.js/issues/256
       * @param {MouseEvent}  event
       * @private
       */
    }, {
      key: 'onMouseWheel',
      value: function onMouseWheel(event) {
        if (this.options.zoomView === true) {
          // retrieve delta
          var delta = 0;
          if (event.wheelDelta) {
            /* IE/Opera. */
            delta = event.wheelDelta / 120;
          } else if (event.detail) {
            /* Mozilla case. */
            // In Mozilla, sign of delta is different than in IE.
            // Also, delta is multiple of 3.
            delta = -event.detail / 3;
          }

          // If delta is nonzero, handle it.
          // Basically, delta is now positive if wheel was scrolled up,
          // and negative, if wheel was scrolled down.
          if (delta !== 0) {

            // calculate the new scale
            var scale = this.body.view.scale;
            var zoom = delta / 10;
            if (delta < 0) {
              zoom = zoom / (1 - zoom);
            }
            scale *= 1 + zoom;

            // calculate the pointer location
            var pointer = this.getPointer({ x: event.clientX, y: event.clientY });

            // apply the new scale
            this.zoom(scale, pointer);
          }

          // Prevent default actions caused by mouse wheel.
          event.preventDefault();
        }
      }

      /**
       * Mouse move handler for checking whether the title moves over a node with a title.
       * @param  {Event} event
       * @private
       */
    }, {
      key: 'onMouseMove',
      value: function onMouseMove(event) {
        var _this3 = this;

        var pointer = this.getPointer({ x: event.clientX, y: event.clientY });
        var popupVisible = false;

        // check if the previously selected node is still selected
        if (this.popup !== undefined) {
          if (this.popup.hidden === false) {
            this._checkHidePopup(pointer);
          }

          // if the popup was not hidden above
          if (this.popup.hidden === false) {
            popupVisible = true;
            this.popup.setPosition(pointer.x + 3, pointer.y - 5);
            this.popup.show();
          }
        }

        // if we bind the keyboard to the div, we have to highlight it to use it. This highlights it on mouse over.
        if (this.options.keyboard.bindToWindow === false && this.options.keyboard.enabled === true) {
          this.canvas.frame.focus();
        }

        // start a timeout that will check if the mouse is positioned above an element
        if (popupVisible === false) {
          if (this.popupTimer !== undefined) {
            clearInterval(this.popupTimer); // stop any running calculationTimer
            this.popupTimer = undefined;
          }
          if (!this.drag.dragging) {
            this.popupTimer = setTimeout(function () {
              return _this3._checkShowPopup(pointer);
            }, this.options.tooltipDelay);
          }
        }

        /**
        * Adding hover highlights
        */
        if (this.options.hover === true) {
          // adding hover highlights
          var obj = this.selectionHandler.getNodeAt(pointer);
          if (obj === undefined) {
            obj = this.selectionHandler.getEdgeAt(pointer);
          }
          this.selectionHandler.hoverObject(obj);
        }
      }

      /**
       * Check if there is an element on the given position in the network
       * (a node or edge). If so, and if this element has a title,
       * show a popup window with its title.
       *
       * @param {{x:Number, y:Number}} pointer
       * @private
       */
    }, {
      key: '_checkShowPopup',
      value: function _checkShowPopup(pointer) {
        var x = this.canvas._XconvertDOMtoCanvas(pointer.x);
        var y = this.canvas._YconvertDOMtoCanvas(pointer.y);
        var pointerObj = {
          left: x,
          top: y,
          right: x,
          bottom: y
        };

        var previousPopupObjId = this.popupObj === undefined ? undefined : this.popupObj.id;
        var nodeUnderCursor = false;
        var popupType = 'node';

        // check if a node is under the cursor.
        if (this.popupObj === undefined) {
          // search the nodes for overlap, select the top one in case of multiple nodes
          var nodeIndices = this.body.nodeIndices;
          var nodes = this.body.nodes;
          var node = undefined;
          var overlappingNodes = [];
          for (var i = 0; i < nodeIndices.length; i++) {
            node = nodes[nodeIndices[i]];
            if (node.isOverlappingWith(pointerObj) === true) {
              if (node.getTitle() !== undefined) {
                overlappingNodes.push(nodeIndices[i]);
              }
            }
          }

          if (overlappingNodes.length > 0) {
            // if there are overlapping nodes, select the last one, this is the one which is drawn on top of the others
            this.popupObj = nodes[overlappingNodes[overlappingNodes.length - 1]];
            // if you hover over a node, the title of the edge is not supposed to be shown.
            nodeUnderCursor = true;
          }
        }

        if (this.popupObj === undefined && nodeUnderCursor === false) {
          // search the edges for overlap
          var edgeIndices = this.body.edgeIndices;
          var edges = this.body.edges;
          var edge = undefined;
          var overlappingEdges = [];
          for (var i = 0; i < edgeIndices.length; i++) {
            edge = edges[edgeIndices[i]];
            if (edge.isOverlappingWith(pointerObj) === true) {
              if (edge.connected === true && edge.getTitle() !== undefined) {
                overlappingEdges.push(edgeIndices[i]);
              }
            }
          }

          if (overlappingEdges.length > 0) {
            this.popupObj = edges[overlappingEdges[overlappingEdges.length - 1]];
            popupType = 'edge';
          }
        }

        if (this.popupObj !== undefined) {
          // show popup message window
          if (this.popupObj.id !== previousPopupObjId) {
            if (this.popup === undefined) {
              this.popup = new _componentsPopup2['default'](this.canvas.frame);
            }

            this.popup.popupTargetType = popupType;
            this.popup.popupTargetId = this.popupObj.id;

            // adjust a small offset such that the mouse cursor is located in the
            // bottom left location of the popup, and you can easily move over the
            // popup area
            this.popup.setPosition(pointer.x + 3, pointer.y - 5);
            this.popup.setText(this.popupObj.getTitle());
            this.popup.show();
            this.body.emitter.emit('showPopup', this.popupObj.id);
          }
        } else {
          if (this.popup !== undefined) {
            this.popup.hide();
            this.body.emitter.emit('hidePopup');
          }
        }
      }

      /**
       * Check if the popup must be hidden, which is the case when the mouse is no
       * longer hovering on the object
       * @param {{x:Number, y:Number}} pointer
       * @private
       */
    }, {
      key: '_checkHidePopup',
      value: function _checkHidePopup(pointer) {
        var pointerObj = this.selectionHandler._pointerToPositionObject(pointer);

        var stillOnObj = false;
        if (this.popup.popupTargetType === 'node') {
          if (this.body.nodes[this.popup.popupTargetId] !== undefined) {
            stillOnObj = this.body.nodes[this.popup.popupTargetId].isOverlappingWith(pointerObj);

            // if the mouse is still one the node, we have to check if it is not also on one that is drawn on top of it.
            // we initially only check stillOnObj because this is much faster.
            if (stillOnObj === true) {
              var overNode = this.selectionHandler.getNodeAt(pointer);
              stillOnObj = overNode.id === this.popup.popupTargetId;
            }
          }
        } else {
          if (this.selectionHandler.getNodeAt(pointer) === undefined) {
            if (this.body.edges[this.popup.popupTargetId] !== undefined) {
              stillOnObj = this.body.edges[this.popup.popupTargetId].isOverlappingWith(pointerObj);
            }
          }
        }

        if (stillOnObj === false) {
          this.popupObj = undefined;
          this.popup.hide();
          this.body.emitter.emit('hidePopup');
        }
      }
    }]);

    return InteractionHandler;
  })();

  exports['default'] = InteractionHandler;
  module.exports = exports['default'];

/***/ },
/* 105 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var util = __webpack_require__(1);
  var Hammer = __webpack_require__(20);
  var hammerUtil = __webpack_require__(24);
  var keycharm = __webpack_require__(40);

  var NavigationHandler = (function () {
    function NavigationHandler(body, canvas) {
      var _this = this;

      _classCallCheck(this, NavigationHandler);

      this.body = body;
      this.canvas = canvas;

      this.iconsCreated = false;
      this.navigationHammers = [];
      this.boundFunctions = {};
      this.touchTime = 0;
      this.activated = false;

      this.body.emitter.on("activate", function () {
        _this.activated = true;_this.configureKeyboardBindings();
      });
      this.body.emitter.on("deactivate", function () {
        _this.activated = false;_this.configureKeyboardBindings();
      });
      this.body.emitter.on("destroy", function () {
        if (_this.keycharm !== undefined) {
          _this.keycharm.destroy();
        }
      });

      this.options = {};
    }

    _createClass(NavigationHandler, [{
      key: 'setOptions',
      value: function setOptions(options) {
        if (options !== undefined) {
          this.options = options;
          this.create();
        }
      }
    }, {
      key: 'create',
      value: function create() {
        if (this.options.navigationButtons === true) {
          if (this.iconsCreated === false) {
            this.loadNavigationElements();
          }
        } else if (this.iconsCreated === true) {
          this.cleanNavigation();
        }

        this.configureKeyboardBindings();
      }
    }, {
      key: 'cleanNavigation',
      value: function cleanNavigation() {
        // clean hammer bindings
        if (this.navigationHammers.length != 0) {
          for (var i = 0; i < this.navigationHammers.length; i++) {
            this.navigationHammers[i].destroy();
          }
          this.navigationHammers = [];
        }

        // clean up previous navigation items
        if (this.navigationDOM && this.navigationDOM['wrapper'] && this.navigationDOM['wrapper'].parentNode) {
          this.navigationDOM['wrapper'].parentNode.removeChild(this.navigationDOM['wrapper']);
        }

        this.iconsCreated = false;
      }

      /**
       * Creation of the navigation controls nodes. They are drawn over the rest of the nodes and are not affected by scale and translation
       * they have a triggerFunction which is called on click. If the position of the navigation controls is dependent
       * on this.frame.canvas.clientWidth or this.frame.canvas.clientHeight, we flag horizontalAlignLeft and verticalAlignTop false.
       * This means that the location will be corrected by the _relocateNavigation function on a size change of the canvas.
       *
       * @private
       */
    }, {
      key: 'loadNavigationElements',
      value: function loadNavigationElements() {
        var _this2 = this;

        this.cleanNavigation();

        this.navigationDOM = {};
        var navigationDivs = ['up', 'down', 'left', 'right', 'zoomIn', 'zoomOut', 'zoomExtends'];
        var navigationDivActions = ['_moveUp', '_moveDown', '_moveLeft', '_moveRight', '_zoomIn', '_zoomOut', '_fit'];

        this.navigationDOM['wrapper'] = document.createElement('div');
        this.navigationDOM['wrapper'].className = 'vis-navigation';
        this.canvas.frame.appendChild(this.navigationDOM['wrapper']);

        for (var i = 0; i < navigationDivs.length; i++) {
          this.navigationDOM[navigationDivs[i]] = document.createElement('div');
          this.navigationDOM[navigationDivs[i]].className = 'vis-button vis-' + navigationDivs[i];
          this.navigationDOM['wrapper'].appendChild(this.navigationDOM[navigationDivs[i]]);

          var hammer = new Hammer(this.navigationDOM[navigationDivs[i]]);
          if (navigationDivActions[i] === "_fit") {
            hammerUtil.onTouch(hammer, this._fit.bind(this));
          } else {
            hammerUtil.onTouch(hammer, this.bindToRedraw.bind(this, navigationDivActions[i]));
          }

          this.navigationHammers.push(hammer);
        }

        // use a hammer for the release so we do not require the one used in the rest of the network
        // the one the rest uses can be overloaded by the manipulation system.
        var hammerFrame = new Hammer(this.canvas.frame);
        hammerUtil.onRelease(hammerFrame, function () {
          _this2._stopMovement();
        });
        this.navigationHammers.push(hammerFrame);

        this.iconsCreated = true;
      }
    }, {
      key: 'bindToRedraw',
      value: function bindToRedraw(action) {
        if (this.boundFunctions[action] === undefined) {
          this.boundFunctions[action] = this[action].bind(this);
          this.body.emitter.on("initRedraw", this.boundFunctions[action]);
          this.body.emitter.emit("_startRendering");
        }
      }
    }, {
      key: 'unbindFromRedraw',
      value: function unbindFromRedraw(action) {
        if (this.boundFunctions[action] !== undefined) {
          this.body.emitter.off("initRedraw", this.boundFunctions[action]);
          this.body.emitter.emit("_stopRendering");
          delete this.boundFunctions[action];
        }
      }

      /**
       * this stops all movement induced by the navigation buttons
       *
       * @private
       */
    }, {
      key: '_fit',
      value: function _fit() {
        if (new Date().valueOf() - this.touchTime > 700) {
          // TODO: fix ugly hack to avoid hammer's double fireing of event (because we use release?)
          this.body.emitter.emit("fit", { duration: 700 });
          this.touchTime = new Date().valueOf();
        }
      }

      /**
       * this stops all movement induced by the navigation buttons
       *
       * @private
       */
    }, {
      key: '_stopMovement',
      value: function _stopMovement() {
        for (var boundAction in this.boundFunctions) {
          if (this.boundFunctions.hasOwnProperty(boundAction)) {
            this.body.emitter.off("initRedraw", this.boundFunctions[boundAction]);
            this.body.emitter.emit("_stopRendering");
          }
        }
        this.boundFunctions = {};
      }
    }, {
      key: '_moveUp',
      value: function _moveUp() {
        this.body.view.translation.y += this.options.keyboard.speed.y;
      }
    }, {
      key: '_moveDown',
      value: function _moveDown() {
        this.body.view.translation.y -= this.options.keyboard.speed.y;
      }
    }, {
      key: '_moveLeft',
      value: function _moveLeft() {
        this.body.view.translation.x += this.options.keyboard.speed.x;
      }
    }, {
      key: '_moveRight',
      value: function _moveRight() {
        this.body.view.translation.x -= this.options.keyboard.speed.x;
      }
    }, {
      key: '_zoomIn',
      value: function _zoomIn() {
        this.body.view.scale *= 1 + this.options.keyboard.speed.zoom;
        this.body.emitter.emit('zoom', { direction: '+', scale: this.body.view.scale });
      }
    }, {
      key: '_zoomOut',
      value: function _zoomOut() {
        this.body.view.scale /= 1 + this.options.keyboard.speed.zoom;
        this.body.emitter.emit('zoom', { direction: '-', scale: this.body.view.scale });
      }

      /**
       * bind all keys using keycharm.
       */
    }, {
      key: 'configureKeyboardBindings',
      value: function configureKeyboardBindings() {
        var _this3 = this;

        if (this.keycharm !== undefined) {
          this.keycharm.destroy();
        }

        if (this.options.keyboard.enabled === true) {
          if (this.options.keyboard.bindToWindow === true) {
            this.keycharm = keycharm({ container: window, preventDefault: true });
          } else {
            this.keycharm = keycharm({ container: this.canvas.frame, preventDefault: true });
          }

          this.keycharm.reset();

          if (this.activated === true) {
            this.keycharm.bind("up", function () {
              _this3.bindToRedraw("_moveUp");
            }, "keydown");
            this.keycharm.bind("down", function () {
              _this3.bindToRedraw("_moveDown");
            }, "keydown");
            this.keycharm.bind("left", function () {
              _this3.bindToRedraw("_moveLeft");
            }, "keydown");
            this.keycharm.bind("right", function () {
              _this3.bindToRedraw("_moveRight");
            }, "keydown");
            this.keycharm.bind("=", function () {
              _this3.bindToRedraw("_zoomIn");
            }, "keydown");
            this.keycharm.bind("num+", function () {
              _this3.bindToRedraw("_zoomIn");
            }, "keydown");
            this.keycharm.bind("num-", function () {
              _this3.bindToRedraw("_zoomOut");
            }, "keydown");
            this.keycharm.bind("-", function () {
              _this3.bindToRedraw("_zoomOut");
            }, "keydown");
            this.keycharm.bind("[", function () {
              _this3.bindToRedraw("_zoomOut");
            }, "keydown");
            this.keycharm.bind("]", function () {
              _this3.bindToRedraw("_zoomIn");
            }, "keydown");
            this.keycharm.bind("pageup", function () {
              _this3.bindToRedraw("_zoomIn");
            }, "keydown");
            this.keycharm.bind("pagedown", function () {
              _this3.bindToRedraw("_zoomOut");
            }, "keydown");

            this.keycharm.bind("up", function () {
              _this3.unbindFromRedraw("_moveUp");
            }, "keyup");
            this.keycharm.bind("down", function () {
              _this3.unbindFromRedraw("_moveDown");
            }, "keyup");
            this.keycharm.bind("left", function () {
              _this3.unbindFromRedraw("_moveLeft");
            }, "keyup");
            this.keycharm.bind("right", function () {
              _this3.unbindFromRedraw("_moveRight");
            }, "keyup");
            this.keycharm.bind("=", function () {
              _this3.unbindFromRedraw("_zoomIn");
            }, "keyup");
            this.keycharm.bind("num+", function () {
              _this3.unbindFromRedraw("_zoomIn");
            }, "keyup");
            this.keycharm.bind("num-", function () {
              _this3.unbindFromRedraw("_zoomOut");
            }, "keyup");
            this.keycharm.bind("-", function () {
              _this3.unbindFromRedraw("_zoomOut");
            }, "keyup");
            this.keycharm.bind("[", function () {
              _this3.unbindFromRedraw("_zoomOut");
            }, "keyup");
            this.keycharm.bind("]", function () {
              _this3.unbindFromRedraw("_zoomIn");
            }, "keyup");
            this.keycharm.bind("pageup", function () {
              _this3.unbindFromRedraw("_zoomIn");
            }, "keyup");
            this.keycharm.bind("pagedown", function () {
              _this3.unbindFromRedraw("_zoomOut");
            }, "keyup");
          }
        }
      }
    }]);

    return NavigationHandler;
  })();

  exports['default'] = NavigationHandler;
  module.exports = exports['default'];

/***/ },
/* 106 */
/***/ function(module, exports) {

  /**
   * Popup is a class to create a popup window with some text
   * @param {Element}  container     The container object.
   * @param {Number} [x]
   * @param {Number} [y]
   * @param {String} [text]
   * @param {Object} [style]     An object containing borderColor,
   *                             backgroundColor, etc.
   */
  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var Popup = (function () {
    function Popup(container) {
      _classCallCheck(this, Popup);

      this.container = container;

      this.x = 0;
      this.y = 0;
      this.padding = 5;
      this.hidden = false;

      // create the frame
      this.frame = document.createElement('div');
      this.frame.className = 'vis-network-tooltip';
      this.container.appendChild(this.frame);
    }

    /**
     * @param {number} x   Horizontal position of the popup window
     * @param {number} y   Vertical position of the popup window
     */

    _createClass(Popup, [{
      key: 'setPosition',
      value: function setPosition(x, y) {
        this.x = parseInt(x);
        this.y = parseInt(y);
      }

      /**
       * Set the content for the popup window. This can be HTML code or text.
       * @param {string | Element} content
       */
    }, {
      key: 'setText',
      value: function setText(content) {
        if (content instanceof Element) {
          this.frame.innerHTML = '';
          this.frame.appendChild(content);
        } else {
          this.frame.innerHTML = content; // string containing text or HTML
        }
      }

      /**
       * Show the popup window
       * @param {boolean} [doShow]    Show or hide the window
       */
    }, {
      key: 'show',
      value: function show(doShow) {
        if (doShow === undefined) {
          doShow = true;
        }

        if (doShow === true) {
          var height = this.frame.clientHeight;
          var width = this.frame.clientWidth;
          var maxHeight = this.frame.parentNode.clientHeight;
          var maxWidth = this.frame.parentNode.clientWidth;

          var top = this.y - height;
          if (top + height + this.padding > maxHeight) {
            top = maxHeight - height - this.padding;
          }
          if (top < this.padding) {
            top = this.padding;
          }

          var left = this.x;
          if (left + width + this.padding > maxWidth) {
            left = maxWidth - width - this.padding;
          }
          if (left < this.padding) {
            left = this.padding;
          }

          this.frame.style.left = left + "px";
          this.frame.style.top = top + "px";
          this.frame.style.visibility = "visible";
          this.hidden = false;
        } else {
          this.hide();
        }
      }

      /**
       * Hide the popup window
       */
    }, {
      key: 'hide',
      value: function hide() {
        this.hidden = true;
        this.frame.style.visibility = "hidden";
      }
    }]);

    return Popup;
  })();

  exports['default'] = Popup;
  module.exports = exports['default'];

/***/ },
/* 107 */
/***/ function(module, exports, __webpack_require__) {

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var Node = __webpack_require__(61);
  var Edge = __webpack_require__(81);
  var util = __webpack_require__(1);

  var SelectionHandler = (function () {
    function SelectionHandler(body, canvas) {
      var _this = this;

      _classCallCheck(this, SelectionHandler);

      this.body = body;
      this.canvas = canvas;
      this.selectionObj = { nodes: [], edges: [] };
      this.hoverObj = { nodes: {}, edges: {} };

      this.options = {};
      this.defaultOptions = {
        multiselect: false,
        selectable: true,
        selectConnectedEdges: true,
        hoverConnectedEdges: true
      };
      util.extend(this.options, this.defaultOptions);

      this.body.emitter.on("_dataChanged", function () {
        _this.updateSelection();
      });
    }

    _createClass(SelectionHandler, [{
      key: "setOptions",
      value: function setOptions(options) {
        if (options !== undefined) {
          var fields = ['multiselect', 'hoverConnectedEdges', 'selectable', 'selectConnectedEdges'];
          util.selectiveDeepExtend(fields, this.options, options);
        }
      }

      /**
       * handles the selection part of the tap;
       *
       * @param {Object} pointer
       * @private
       */
    }, {
      key: "selectOnPoint",
      value: function selectOnPoint(pointer) {
        var selected = false;
        if (this.options.selectable === true) {
          var obj = this.getNodeAt(pointer) || this.getEdgeAt(pointer);

          // unselect after getting the objects in order to restore width and height.
          this.unselectAll();

          if (obj !== undefined) {
            selected = this.selectObject(obj);
          }
          this.body.emitter.emit("_requestRedraw");
        }
        return selected;
      }
    }, {
      key: "selectAdditionalOnPoint",
      value: function selectAdditionalOnPoint(pointer) {
        var selectionChanged = false;
        if (this.options.selectable === true) {
          var obj = this.getNodeAt(pointer) || this.getEdgeAt(pointer);

          if (obj !== undefined) {
            selectionChanged = true;
            if (obj.isSelected() === true) {
              this.deselectObject(obj);
            } else {
              this.selectObject(obj);
            }

            this.body.emitter.emit("_requestRedraw");
          }
        }
        return selectionChanged;
      }
    }, {
      key: "_generateClickEvent",
      value: function _generateClickEvent(eventType, event, pointer, oldSelection) {
        var emptySelection = arguments.length <= 4 || arguments[4] === undefined ? false : arguments[4];

        var properties = undefined;
        if (emptySelection === true) {
          properties = { nodes: [], edges: [] };
        } else {
          properties = this.getSelection();
        }
        properties['pointer'] = {
          DOM: { x: pointer.x, y: pointer.y },
          canvas: this.canvas.DOMtoCanvas(pointer)
        };
        properties['event'] = event;

        if (oldSelection !== undefined) {
          properties['previousSelection'] = oldSelection;
        }
        this.body.emitter.emit(eventType, properties);
      }
    }, {
      key: "selectObject",
      value: function selectObject(obj) {
        var highlightEdges = arguments.length <= 1 || arguments[1] === undefined ? this.options.selectConnectedEdges : arguments[1];

        if (obj !== undefined) {
          if (obj instanceof Node) {
            if (highlightEdges === true) {
              this._selectConnectedEdges(obj);
            }
          }
          obj.select();
          this._addToSelection(obj);
          return true;
        }
        return false;
      }
    }, {
      key: "deselectObject",
      value: function deselectObject(obj) {
        if (obj.isSelected() === true) {
          obj.selected = false;
          this._removeFromSelection(obj);
        }
      }

      /**
       * retrieve all nodes overlapping with given object
       * @param {Object} object  An object with parameters left, top, right, bottom
       * @return {Number[]}   An array with id's of the overlapping nodes
       * @private
       */
    }, {
      key: "_getAllNodesOverlappingWith",
      value: function _getAllNodesOverlappingWith(object) {
        var overlappingNodes = [];
        var nodes = this.body.nodes;
        for (var i = 0; i < this.body.nodeIndices.length; i++) {
          var nodeId = this.body.nodeIndices[i];
          if (nodes[nodeId].isOverlappingWith(object)) {
            overlappingNodes.push(nodeId);
          }
        }
        return overlappingNodes;
      }

      /**
       * Return a position object in canvasspace from a single point in screenspace
       *
       * @param pointer
       * @returns {{left: number, top: number, right: number, bottom: number}}
       * @private
       */
    }, {
      key: "_pointerToPositionObject",
      value: function _pointerToPositionObject(pointer) {
        var canvasPos = this.canvas.DOMtoCanvas(pointer);
        return {
          left: canvasPos.x - 1,
          top: canvasPos.y + 1,
          right: canvasPos.x + 1,
          bottom: canvasPos.y - 1
        };
      }

      /**
       * Get the top node at the a specific point (like a click)
       *
       * @param {{x: Number, y: Number}} pointer
       * @return {Node | undefined} node
       */
    }, {
      key: "getNodeAt",
      value: function getNodeAt(pointer) {
        var returnNode = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        // we first check if this is an navigation controls element
        var positionObject = this._pointerToPositionObject(pointer);
        var overlappingNodes = this._getAllNodesOverlappingWith(positionObject);
        // if there are overlapping nodes, select the last one, this is the
        // one which is drawn on top of the others
        if (overlappingNodes.length > 0) {
          if (returnNode === true) {
            return this.body.nodes[overlappingNodes[overlappingNodes.length - 1]];
          } else {
            return overlappingNodes[overlappingNodes.length - 1];
          }
        } else {
          return undefined;
        }
      }

      /**
       * retrieve all edges overlapping with given object, selector is around center
       * @param {Object} object  An object with parameters left, top, right, bottom
       * @return {Number[]}   An array with id's of the overlapping nodes
       * @private
       */
    }, {
      key: "_getEdgesOverlappingWith",
      value: function _getEdgesOverlappingWith(object, overlappingEdges) {
        var edges = this.body.edges;
        for (var i = 0; i < this.body.edgeIndices.length; i++) {
          var edgeId = this.body.edgeIndices[i];
          if (edges[edgeId].isOverlappingWith(object)) {
            overlappingEdges.push(edgeId);
          }
        }
      }

      /**
       * retrieve all nodes overlapping with given object
       * @param {Object} object  An object with parameters left, top, right, bottom
       * @return {Number[]}   An array with id's of the overlapping nodes
       * @private
       */
    }, {
      key: "_getAllEdgesOverlappingWith",
      value: function _getAllEdgesOverlappingWith(object) {
        var overlappingEdges = [];
        this._getEdgesOverlappingWith(object, overlappingEdges);
        return overlappingEdges;
      }

      /**
       * Place holder. To implement change the getNodeAt to a _getObjectAt. Have the _getObjectAt call
       * getNodeAt and _getEdgesAt, then priortize the selection to user preferences.
       *
       * @param pointer
       * @returns {undefined}
       */
    }, {
      key: "getEdgeAt",
      value: function getEdgeAt(pointer) {
        var returnEdge = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        var positionObject = this._pointerToPositionObject(pointer);
        var overlappingEdges = this._getAllEdgesOverlappingWith(positionObject);

        if (overlappingEdges.length > 0) {
          if (returnEdge === true) {
            return this.body.edges[overlappingEdges[overlappingEdges.length - 1]];
          } else {
            return overlappingEdges[overlappingEdges.length - 1];
          }
        } else {
          return undefined;
        }
      }

      /**
       * Add object to the selection array.
       *
       * @param obj
       * @private
       */
    }, {
      key: "_addToSelection",
      value: function _addToSelection(obj) {
        if (obj instanceof Node) {
          this.selectionObj.nodes[obj.id] = obj;
        } else {
          this.selectionObj.edges[obj.id] = obj;
        }
      }

      /**
       * Add object to the selection array.
       *
       * @param obj
       * @private
       */
    }, {
      key: "_addToHover",
      value: function _addToHover(obj) {
        if (obj instanceof Node) {
          this.hoverObj.nodes[obj.id] = obj;
        } else {
          this.hoverObj.edges[obj.id] = obj;
        }
      }

      /**
       * Remove a single option from selection.
       *
       * @param {Object} obj
       * @private
       */
    }, {
      key: "_removeFromSelection",
      value: function _removeFromSelection(obj) {
        if (obj instanceof Node) {
          delete this.selectionObj.nodes[obj.id];
          this._unselectConnectedEdges(obj);
        } else {
          delete this.selectionObj.edges[obj.id];
        }
      }

      /**
       * Unselect all. The selectionObj is useful for this.
       */
    }, {
      key: "unselectAll",
      value: function unselectAll() {
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            this.selectionObj.nodes[nodeId].unselect();
          }
        }
        for (var edgeId in this.selectionObj.edges) {
          if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
            this.selectionObj.edges[edgeId].unselect();
          }
        }

        this.selectionObj = { nodes: {}, edges: {} };
      }

      /**
       * return the number of selected nodes
       *
       * @returns {number}
       * @private
       */
    }, {
      key: "_getSelectedNodeCount",
      value: function _getSelectedNodeCount() {
        var count = 0;
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            count += 1;
          }
        }
        return count;
      }

      /**
       * return the selected node
       *
       * @returns {number}
       * @private
       */
    }, {
      key: "_getSelectedNode",
      value: function _getSelectedNode() {
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            return this.selectionObj.nodes[nodeId];
          }
        }
        return undefined;
      }

      /**
       * return the selected edge
       *
       * @returns {number}
       * @private
       */
    }, {
      key: "_getSelectedEdge",
      value: function _getSelectedEdge() {
        for (var edgeId in this.selectionObj.edges) {
          if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
            return this.selectionObj.edges[edgeId];
          }
        }
        return undefined;
      }

      /**
       * return the number of selected edges
       *
       * @returns {number}
       * @private
       */
    }, {
      key: "_getSelectedEdgeCount",
      value: function _getSelectedEdgeCount() {
        var count = 0;
        for (var edgeId in this.selectionObj.edges) {
          if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
            count += 1;
          }
        }
        return count;
      }

      /**
       * return the number of selected objects.
       *
       * @returns {number}
       * @private
       */
    }, {
      key: "_getSelectedObjectCount",
      value: function _getSelectedObjectCount() {
        var count = 0;
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            count += 1;
          }
        }
        for (var edgeId in this.selectionObj.edges) {
          if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
            count += 1;
          }
        }
        return count;
      }

      /**
       * Check if anything is selected
       *
       * @returns {boolean}
       * @private
       */
    }, {
      key: "_selectionIsEmpty",
      value: function _selectionIsEmpty() {
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            return false;
          }
        }
        for (var edgeId in this.selectionObj.edges) {
          if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
            return false;
          }
        }
        return true;
      }

      /**
       * check if one of the selected nodes is a cluster.
       *
       * @returns {boolean}
       * @private
       */
    }, {
      key: "_clusterInSelection",
      value: function _clusterInSelection() {
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            if (this.selectionObj.nodes[nodeId].clusterSize > 1) {
              return true;
            }
          }
        }
        return false;
      }

      /**
       * select the edges connected to the node that is being selected
       *
       * @param {Node} node
       * @private
       */
    }, {
      key: "_selectConnectedEdges",
      value: function _selectConnectedEdges(node) {
        for (var i = 0; i < node.edges.length; i++) {
          var edge = node.edges[i];
          edge.select();
          this._addToSelection(edge);
        }
      }

      /**
       * select the edges connected to the node that is being selected
       *
       * @param {Node} node
       * @private
       */
    }, {
      key: "_hoverConnectedEdges",
      value: function _hoverConnectedEdges(node) {
        for (var i = 0; i < node.edges.length; i++) {
          var edge = node.edges[i];
          edge.hover = true;
          this._addToHover(edge);
        }
      }

      /**
       * unselect the edges connected to the node that is being selected
       *
       * @param {Node} node
       * @private
       */
    }, {
      key: "_unselectConnectedEdges",
      value: function _unselectConnectedEdges(node) {
        for (var i = 0; i < node.edges.length; i++) {
          var edge = node.edges[i];
          edge.unselect();
          this._removeFromSelection(edge);
        }
      }

      /**
       * This is called when someone clicks on a node. either select or deselect it.
       * If there is an existing selection and we don't want to append to it, clear the existing selection
       *
       * @param {Node || Edge} object
       * @private
       */
    }, {
      key: "blurObject",
      value: function blurObject(object) {
        if (object.hover === true) {
          object.hover = false;
          if (object instanceof Node) {
            this.body.emitter.emit("blurNode", { node: object.id });
          } else {
            this.body.emitter.emit("blurEdge", { edge: object.id });
          }
        }
      }

      /**
       * This is called when someone clicks on a node. either select or deselect it.
       * If there is an existing selection and we don't want to append to it, clear the existing selection
       *
       * @param {Node || Edge} object
       * @private
       */
    }, {
      key: "hoverObject",
      value: function hoverObject(object) {
        var hoverChanged = false;
        // remove all node hover highlights
        for (var nodeId in this.hoverObj.nodes) {
          if (this.hoverObj.nodes.hasOwnProperty(nodeId)) {
            if (object === undefined || object instanceof Node && object.id != nodeId || object instanceof Edge) {
              this.blurObject(this.hoverObj.nodes[nodeId]);
              delete this.hoverObj.nodes[nodeId];
              hoverChanged = true;
            }
          }
        }

        // removing all edge hover highlights
        for (var edgeId in this.hoverObj.edges) {
          if (this.hoverObj.edges.hasOwnProperty(edgeId)) {
            // if the hover has been changed here it means that the node has been hovered over or off
            // we then do not use the blurObject method here.
            if (hoverChanged === true) {
              this.hoverObj.edges[edgeId].hover = false;
              delete this.hoverObj.edges[edgeId];
            }
            // if the blur remains the same and the object is undefined (mouse off), we blur the edge
            else if (object === undefined) {
                this.blurObject(this.hoverObj.edges[edgeId]);
                delete this.hoverObj.edges[edgeId];
                hoverChanged = true;
              }
          }
        }

        if (object !== undefined) {
          if (object.hover === false) {
            object.hover = true;
            this._addToHover(object);
            hoverChanged = true;
            if (object instanceof Node) {
              this.body.emitter.emit("hoverNode", { node: object.id });
            } else {
              this.body.emitter.emit("hoverEdge", { edge: object.id });
            }
          }
          if (object instanceof Node && this.options.hoverConnectedEdges === true) {
            this._hoverConnectedEdges(object);
          }
        }

        if (hoverChanged === true) {
          this.body.emitter.emit('_requestRedraw');
        }
      }

      /**
       *
       * retrieve the currently selected objects
       * @return {{nodes: Array.<String>, edges: Array.<String>}} selection
       */
    }, {
      key: "getSelection",
      value: function getSelection() {
        var nodeIds = this.getSelectedNodes();
        var edgeIds = this.getSelectedEdges();
        return { nodes: nodeIds, edges: edgeIds };
      }

      /**
       *
       * retrieve the currently selected nodes
       * @return {String[]} selection    An array with the ids of the
       *                                            selected nodes.
       */
    }, {
      key: "getSelectedNodes",
      value: function getSelectedNodes() {
        var idArray = [];
        if (this.options.selectable === true) {
          for (var nodeId in this.selectionObj.nodes) {
            if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
              idArray.push(this.selectionObj.nodes[nodeId].id);
            }
          }
        }
        return idArray;
      }

      /**
       *
       * retrieve the currently selected edges
       * @return {Array} selection    An array with the ids of the
       *                                            selected nodes.
       */
    }, {
      key: "getSelectedEdges",
      value: function getSelectedEdges() {
        var idArray = [];
        if (this.options.selectable === true) {
          for (var edgeId in this.selectionObj.edges) {
            if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
              idArray.push(this.selectionObj.edges[edgeId].id);
            }
          }
        }
        return idArray;
      }

      /**
       * Updates the current selection
       * @param {{nodes: Array.<String>, edges: Array.<String>}} Selection
       * @param {Object} options                                 Options
       */
    }, {
      key: "setSelection",
      value: function setSelection(selection) {
        var options = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

        var i = undefined,
            id = undefined;

        if (!selection || !selection.nodes && !selection.edges) throw 'Selection must be an object with nodes and/or edges properties';
        // first unselect any selected node, if option is true or undefined
        if (options.unselectAll || options.unselectAll === undefined) {
          this.unselectAll();
        }
        if (selection.nodes) {
          for (i = 0; i < selection.nodes.length; i++) {
            id = selection.nodes[i];

            var node = this.body.nodes[id];
            if (!node) {
              throw new RangeError('Node with id "' + id + '" not found');
            }
            // don't select edges with it
            this.selectObject(node, options.highlightEdges);
          }
        }

        if (selection.edges) {
          for (i = 0; i < selection.edges.length; i++) {
            id = selection.edges[i];

            var edge = this.body.edges[id];
            if (!edge) {
              throw new RangeError('Edge with id "' + id + '" not found');
            }
            this.selectObject(edge);
          }
        }
        this.body.emitter.emit('_requestRedraw');
      }

      /**
       * select zero or more nodes with the option to highlight edges
       * @param {Number[] | String[]} selection     An array with the ids of the
       *                                            selected nodes.
       * @param {boolean} [highlightEdges]
       */
    }, {
      key: "selectNodes",
      value: function selectNodes(selection) {
        var highlightEdges = arguments.length <= 1 || arguments[1] === undefined ? true : arguments[1];

        if (!selection || selection.length === undefined) throw 'Selection must be an array with ids';

        this.setSelection({ nodes: selection }, { highlightEdges: highlightEdges });
      }

      /**
       * select zero or more edges
       * @param {Number[] | String[]} selection     An array with the ids of the
       *                                            selected nodes.
       */
    }, {
      key: "selectEdges",
      value: function selectEdges(selection) {
        if (!selection || selection.length === undefined) throw 'Selection must be an array with ids';

        this.setSelection({ edges: selection });
      }

      /**
       * Validate the selection: remove ids of nodes which no longer exist
       * @private
       */
    }, {
      key: "updateSelection",
      value: function updateSelection() {
        for (var nodeId in this.selectionObj.nodes) {
          if (this.selectionObj.nodes.hasOwnProperty(nodeId)) {
            if (!this.body.nodes.hasOwnProperty(nodeId)) {
              delete this.selectionObj.nodes[nodeId];
            }
          }
        }
        for (var edgeId in this.selectionObj.edges) {
          if (this.selectionObj.edges.hasOwnProperty(edgeId)) {
            if (!this.body.edges.hasOwnProperty(edgeId)) {
              delete this.selectionObj.edges[edgeId];
            }
          }
        }
      }
    }]);

    return SelectionHandler;
  })();

  exports["default"] = SelectionHandler;
  module.exports = exports["default"];

/***/ },
/* 108 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var _NetworkUtil = __webpack_require__(99);

  var _NetworkUtil2 = _interopRequireDefault(_NetworkUtil);

  var util = __webpack_require__(1);

  var LayoutEngine = (function () {
    function LayoutEngine(body) {
      _classCallCheck(this, LayoutEngine);

      this.body = body;

      this.initialRandomSeed = Math.round(Math.random() * 1000000);
      this.randomSeed = this.initialRandomSeed;
      this.setPhysics = false;
      this.options = {};
      this.optionsBackup = { physics: {} };

      this.defaultOptions = {
        randomSeed: undefined,
        improvedLayout: true,
        hierarchical: {
          enabled: false,
          levelSeparation: 150,
          nodeSpacing: 100,
          treeSpacing: 200,
          blockShifting: true,
          edgeMinimization: true,
          direction: 'UD', // UD, DU, LR, RL
          sortMethod: 'hubsize' // hubsize, directed
        }
      };
      util.extend(this.options, this.defaultOptions);
      this.bindEventListeners();
    }

    _createClass(LayoutEngine, [{
      key: 'bindEventListeners',
      value: function bindEventListeners() {
        var _this = this;

        this.body.emitter.on('_dataChanged', function () {
          _this.setupHierarchicalLayout();
        });
        this.body.emitter.on('_dataLoaded', function () {
          _this.layoutNetwork();
        });
        this.body.emitter.on('_resetHierarchicalLayout', function () {
          _this.setupHierarchicalLayout();
        });
      }
    }, {
      key: 'setOptions',
      value: function setOptions(options, allOptions) {
        if (options !== undefined) {
          var prevHierarchicalState = this.options.hierarchical.enabled;
          util.selectiveDeepExtend(["randomSeed", "improvedLayout"], this.options, options);
          util.mergeOptions(this.options, options, 'hierarchical');
          if (options.randomSeed !== undefined) {
            this.initialRandomSeed = options.randomSeed;
          }

          if (this.options.hierarchical.enabled === true) {
            if (prevHierarchicalState === true) {
              // refresh the overridden options for nodes and edges.
              this.body.emitter.emit('refresh', true);
            }

            // make sure the level separation is the right way up
            if (this.options.hierarchical.direction === 'RL' || this.options.hierarchical.direction === 'DU') {
              if (this.options.hierarchical.levelSeparation > 0) {
                this.options.hierarchical.levelSeparation *= -1;
              }
            } else {
              if (this.options.hierarchical.levelSeparation < 0) {
                this.options.hierarchical.levelSeparation *= -1;
              }
            }

            this.body.emitter.emit('_resetHierarchicalLayout');
            // because the hierarchical system needs it's own physics and smooth curve settings, we adapt the other options if needed.
            return this.adaptAllOptionsForHierarchicalLayout(allOptions);
          } else {
            if (prevHierarchicalState === true) {
              // refresh the overridden options for nodes and edges.
              this.body.emitter.emit('refresh');
              return util.deepExtend(allOptions, this.optionsBackup);
            }
          }
        }
        return allOptions;
      }
    }, {
      key: 'adaptAllOptionsForHierarchicalLayout',
      value: function adaptAllOptionsForHierarchicalLayout(allOptions) {
        if (this.options.hierarchical.enabled === true) {
          // set the physics
          if (allOptions.physics === undefined || allOptions.physics === true) {
            allOptions.physics = {
              enabled: this.optionsBackup.physics.enabled === undefined ? true : this.optionsBackup.physics.enabled,
              solver: 'hierarchicalRepulsion'
            };
            this.optionsBackup.physics.enabled = this.optionsBackup.physics.enabled === undefined ? true : this.optionsBackup.physics.enabled;
            this.optionsBackup.physics.solver = this.optionsBackup.physics.solver || 'barnesHut';
          } else if (typeof allOptions.physics === 'object') {
            this.optionsBackup.physics.enabled = allOptions.physics.enabled === undefined ? true : allOptions.physics.enabled;
            this.optionsBackup.physics.solver = allOptions.physics.solver || 'barnesHut';
            allOptions.physics.solver = 'hierarchicalRepulsion';
          } else if (allOptions.physics !== false) {
            this.optionsBackup.physics.solver = 'barnesHut';
            allOptions.physics = { solver: 'hierarchicalRepulsion' };
          }

          // get the type of static smooth curve in case it is required
          var type = 'horizontal';
          if (this.options.hierarchical.direction === 'RL' || this.options.hierarchical.direction === 'LR') {
            type = 'vertical';
          }

          // disable smooth curves if nothing is defined. If smooth curves have been turned on, turn them into static smooth curves.
          if (allOptions.edges === undefined) {
            this.optionsBackup.edges = { smooth: { enabled: true, type: 'dynamic' } };
            allOptions.edges = { smooth: false };
          } else if (allOptions.edges.smooth === undefined) {
            this.optionsBackup.edges = { smooth: { enabled: true, type: 'dynamic' } };
            allOptions.edges.smooth = false;
          } else {
            if (typeof allOptions.edges.smooth === 'boolean') {
              this.optionsBackup.edges = { smooth: allOptions.edges.smooth };
              allOptions.edges.smooth = { enabled: allOptions.edges.smooth, type: type };
            } else {
              // allow custom types except for dynamic
              if (allOptions.edges.smooth.type !== undefined && allOptions.edges.smooth.type !== 'dynamic') {
                type = allOptions.edges.smooth.type;
              }

              this.optionsBackup.edges = {
                smooth: allOptions.edges.smooth.enabled === undefined ? true : allOptions.edges.smooth.enabled,
                type: allOptions.edges.smooth.type === undefined ? 'dynamic' : allOptions.edges.smooth.type,
                roundness: allOptions.edges.smooth.roundness === undefined ? 0.5 : allOptions.edges.smooth.roundness,
                forceDirection: allOptions.edges.smooth.forceDirection === undefined ? false : allOptions.edges.smooth.forceDirection
              };
              allOptions.edges.smooth = {
                enabled: allOptions.edges.smooth.enabled === undefined ? true : allOptions.edges.smooth.enabled,
                type: type,
                roundness: allOptions.edges.smooth.roundness === undefined ? 0.5 : allOptions.edges.smooth.roundness,
                forceDirection: allOptions.edges.smooth.forceDirection === undefined ? false : allOptions.edges.smooth.forceDirection
              };
            }
          }

          // force all edges into static smooth curves. Only applies to edges that do not use the global options for smooth.
          this.body.emitter.emit('_forceDisableDynamicCurves', type);
        }

        return allOptions;
      }
    }, {
      key: 'seededRandom',
      value: function seededRandom() {
        var x = Math.sin(this.randomSeed++) * 10000;
        return x - Math.floor(x);
      }
    }, {
      key: 'positionInitially',
      value: function positionInitially(nodesArray) {
        if (this.options.hierarchical.enabled !== true) {
          this.randomSeed = this.initialRandomSeed;
          for (var i = 0; i < nodesArray.length; i++) {
            var node = nodesArray[i];
            var radius = 10 * 0.1 * nodesArray.length + 10;
            var angle = 2 * Math.PI * this.seededRandom();
            if (node.x === undefined) {
              node.x = radius * Math.cos(angle);
            }
            if (node.y === undefined) {
              node.y = radius * Math.sin(angle);
            }
          }
        }
      }

      /**
       * Use Kamada Kawai to position nodes. This is quite a heavy algorithm so if there are a lot of nodes we
       * cluster them first to reduce the amount.
       */
    }, {
      key: 'layoutNetwork',
      value: function layoutNetwork() {
        if (this.options.hierarchical.enabled !== true && this.options.improvedLayout === true) {
          // first check if we should Kamada Kawai to layout. The threshold is if less than half of the visible
          // nodes have predefined positions we use this.
          var positionDefined = 0;
          for (var i = 0; i < this.body.nodeIndices.length; i++) {
            var node = this.body.nodes[this.body.nodeIndices[i]];
            if (node.predefinedPosition === true) {
              positionDefined += 1;
            }
          }

          // if less than half of the nodes have a predefined position we continue
          if (positionDefined < 0.5 * this.body.nodeIndices.length) {
            var MAX_LEVELS = 10;
            var level = 0;
            var clusterThreshold = 100;
            // if there are a lot of nodes, we cluster before we run the algorithm.
            if (this.body.nodeIndices.length > clusterThreshold) {
              var startLength = this.body.nodeIndices.length;
              while (this.body.nodeIndices.length > clusterThreshold) {
                //console.time("clustering")
                level += 1;
                var before = this.body.nodeIndices.length;
                // if there are many nodes we do a hubsize cluster
                if (level % 3 === 0) {
                  this.body.modules.clustering.clusterBridges();
                } else {
                  this.body.modules.clustering.clusterOutliers();
                }
                var after = this.body.nodeIndices.length;
                if (before == after && level % 3 !== 0 || level > MAX_LEVELS) {
                  this._declusterAll();
                  this.body.emitter.emit("_layoutFailed");
                  console.info("This network could not be positioned by this version of the improved layout algorithm. Please disable improvedLayout for better performance.");
                  return;
                }
                //console.timeEnd("clustering")
                //console.log(level,after)
              }
              // increase the size of the edges
              this.body.modules.kamadaKawai.setOptions({ springLength: Math.max(150, 2 * startLength) });
            }

            // position the system for these nodes and edges
            this.body.modules.kamadaKawai.solve(this.body.nodeIndices, this.body.edgeIndices, true);

            // shift to center point
            this._shiftToCenter();

            // perturb the nodes a little bit to force the physics to kick in
            var offset = 70;
            for (var i = 0; i < this.body.nodeIndices.length; i++) {
              this.body.nodes[this.body.nodeIndices[i]].x += (0.5 - this.seededRandom()) * offset;
              this.body.nodes[this.body.nodeIndices[i]].y += (0.5 - this.seededRandom()) * offset;
            }

            // uncluster all clusters
            this._declusterAll();

            // reposition all bezier nodes.
            this.body.emitter.emit("_repositionBezierNodes");
          }
        }
      }

      /**
       * Move all the nodes towards to the center so gravitational pull wil not move the nodes away from view
       * @private
       */
    }, {
      key: '_shiftToCenter',
      value: function _shiftToCenter() {
        var range = _NetworkUtil2['default'].getRangeCore(this.body.nodes, this.body.nodeIndices);
        var center = _NetworkUtil2['default'].findCenter(range);
        for (var i = 0; i < this.body.nodeIndices.length; i++) {
          this.body.nodes[this.body.nodeIndices[i]].x -= center.x;
          this.body.nodes[this.body.nodeIndices[i]].y -= center.y;
        }
      }
    }, {
      key: '_declusterAll',
      value: function _declusterAll() {
        var clustersPresent = true;
        while (clustersPresent === true) {
          clustersPresent = false;
          for (var i = 0; i < this.body.nodeIndices.length; i++) {
            if (this.body.nodes[this.body.nodeIndices[i]].isCluster === true) {
              clustersPresent = true;
              this.body.modules.clustering.openCluster(this.body.nodeIndices[i], {}, false);
            }
          }
          if (clustersPresent === true) {
            this.body.emitter.emit('_dataChanged');
          }
        }
      }
    }, {
      key: 'getSeed',
      value: function getSeed() {
        return this.initialRandomSeed;
      }

      /**
       * This is the main function to layout the nodes in a hierarchical way.
       * It checks if the node details are supplied correctly
       *
       * @private
       */
    }, {
      key: 'setupHierarchicalLayout',
      value: function setupHierarchicalLayout() {
        if (this.options.hierarchical.enabled === true && this.body.nodeIndices.length > 0) {
          // get the size of the largest hubs and check if the user has defined a level for a node.
          var node = undefined,
              nodeId = undefined;
          var definedLevel = false;
          var definedPositions = true;
          var undefinedLevel = false;
          this.hierarchicalLevels = {};
          this.lastNodeOnLevel = {};
          this.hierarchicalParents = {};
          this.hierarchicalChildren = {};
          this.hierarchicalTrees = {};
          this.treeIndex = -1;

          this.distributionOrdering = {};
          this.distributionIndex = {};
          this.distributionOrderingPresence = {};

          for (nodeId in this.body.nodes) {
            if (this.body.nodes.hasOwnProperty(nodeId)) {
              node = this.body.nodes[nodeId];
              if (node.options.x === undefined && node.options.y === undefined) {
                definedPositions = false;
              }
              if (node.options.level !== undefined) {
                definedLevel = true;
                this.hierarchicalLevels[nodeId] = node.options.level;
              } else {
                undefinedLevel = true;
              }
            }
          }

          // if the user defined some levels but not all, alert and run without hierarchical layout
          if (undefinedLevel === true && definedLevel === true) {
            throw new Error('To use the hierarchical layout, nodes require either no predefined levels or levels have to be defined for all nodes.');
            return;
          } else {
            // define levels if undefined by the users. Based on hubsize.
            if (undefinedLevel === true) {
              if (this.options.hierarchical.sortMethod === 'hubsize') {
                this._determineLevelsByHubsize();
              } else if (this.options.hierarchical.sortMethod === 'directed') {
                this._determineLevelsDirected();
              } else if (this.options.hierarchical.sortMethod === 'custom') {
                this._determineLevelsCustomCallback();
              }
            }

            // fallback for cases where there are nodes but no edges
            for (var _nodeId in this.body.nodes) {
              if (this.body.nodes.hasOwnProperty(_nodeId)) {
                if (this.hierarchicalLevels[_nodeId] === undefined) {
                  this.hierarchicalLevels[_nodeId] = 0;
                }
              }
            }
            // check the distribution of the nodes per level.
            var distribution = this._getDistribution();

            // get the parent children relations.
            this._generateMap();

            // place the nodes on the canvas.
            this._placeNodesByHierarchy(distribution);

            // condense the whitespace.
            this._condenseHierarchy();

            // shift to center so gravity does not have to do much
            this._shiftToCenter();
          }
        }
      }

      /**
       * @private
       */
    }, {
      key: '_condenseHierarchy',
      value: function _condenseHierarchy() {
        var _this2 = this;

        // Global var in this scope to define when the movement has stopped.
        var stillShifting = false;
        var branches = {};
        // first we have some methods to help shifting trees around.
        // the main method to shift the trees
        var shiftTrees = function shiftTrees() {
          var treeSizes = getTreeSizes();
          for (var i = 0; i < treeSizes.length - 1; i++) {
            var diff = treeSizes[i].max - treeSizes[i + 1].min;
            if (diff !== _this2.options.hierarchical.treeSpacing) {
              shiftTree(i + 1, diff - _this2.options.hierarchical.treeSpacing);
            }
          }
        };

        // shift a single tree by an offset
        var shiftTree = function shiftTree(index, offset) {
          for (var nodeId in _this2.hierarchicalTrees) {
            if (_this2.hierarchicalTrees.hasOwnProperty(nodeId)) {
              if (_this2.hierarchicalTrees[nodeId] === index) {
                _this2._setPositionForHierarchy(_this2.body.nodes[nodeId], offset, undefined, true);
              }
            }
          }
        };

        // get the width of a tree
        var getTreeSize = function getTreeSize(index) {
          var min = 1e9;
          var max = -1e9;
          for (var nodeId in _this2.hierarchicalTrees) {
            if (_this2.hierarchicalTrees.hasOwnProperty(nodeId)) {
              if (_this2.hierarchicalTrees[nodeId] === index) {
                var pos = _this2._getPositionForHierarchy(_this2.body.nodes[nodeId]);
                min = Math.min(pos, min);
                max = Math.max(pos, max);
              }
            }
          }
          return { min: min, max: max };
        };

        // get the width of all trees
        var getTreeSizes = function getTreeSizes() {
          var treeWidths = [];
          for (var i = 0; i < _this2.treeIndex; i++) {
            treeWidths.push(getTreeSize(i));
          }
          return treeWidths;
        };

        // get a map of all nodes in this branch
        var getBranchNodes = function getBranchNodes(source, map) {
          map[source.id] = true;
          if (_this2.hierarchicalParents[source.id]) {
            var children = _this2.hierarchicalParents[source.id].children;
            if (children.length > 0) {
              for (var i = 0; i < children.length; i++) {
                getBranchNodes(_this2.body.nodes[children[i]], map);
              }
            }
          }
        };

        // get a min max width as well as the maximum movement space it has on either sides
        // we use min max terminology because width and height can interchange depending on the direction of the layout
        var getBranchBoundary = function getBranchBoundary(branchMap) {
          var maxLevel = arguments.length <= 1 || arguments[1] === undefined ? 1e9 : arguments[1];

          var minSpace = 1e9;
          var maxSpace = 1e9;
          var min = 1e9;
          var max = -1e9;
          for (var branchNode in branchMap) {
            if (branchMap.hasOwnProperty(branchNode)) {
              var node = _this2.body.nodes[branchNode];
              var level = _this2.hierarchicalLevels[node.id];
              var position = _this2._getPositionForHierarchy(node);

              // get the space around the node.

              var _getSpaceAroundNode2 = _this2._getSpaceAroundNode(node, branchMap);

              var _getSpaceAroundNode22 = _slicedToArray(_getSpaceAroundNode2, 2);

              var minSpaceNode = _getSpaceAroundNode22[0];
              var maxSpaceNode = _getSpaceAroundNode22[1];

              minSpace = Math.min(minSpaceNode, minSpace);
              maxSpace = Math.min(maxSpaceNode, maxSpace);

              // the width is only relevant for the levels two nodes have in common. This is why we filter on this.
              if (level <= maxLevel) {
                min = Math.min(position, min);
                max = Math.max(position, max);
              }
            }
          }

          return [min, max, minSpace, maxSpace];
        };

        // get the maximum level of a branch.
        var getMaxLevel = function getMaxLevel(nodeId) {
          var level = _this2.hierarchicalLevels[nodeId];
          if (_this2.hierarchicalParents[nodeId]) {
            var children = _this2.hierarchicalParents[nodeId].children;
            if (children.length > 0) {
              for (var i = 0; i < children.length; i++) {
                level = Math.max(level, getMaxLevel(children[i]));
              }
            }
          }
          return level;
        };

        // check what the maximum level is these nodes have in common.
        var getCollisionLevel = function getCollisionLevel(node1, node2) {
          var maxLevel1 = getMaxLevel(node1.id);
          var maxLevel2 = getMaxLevel(node2.id);
          return Math.min(maxLevel1, maxLevel2);
        };

        // check if two nodes have the same parent(s)
        var hasSameParent = function hasSameParent(node1, node2) {
          var parents1 = _this2.hierarchicalChildren[node1.id];
          var parents2 = _this2.hierarchicalChildren[node2.id];
          if (parents1 === undefined || parents2 === undefined) {
            return false;
          }
          parents1 = parents1.parents;
          parents2 = parents2.parents;
          for (var i = 0; i < parents1.length; i++) {
            for (var j = 0; j < parents2.length; j++) {
              if (parents1[i] == parents2[j]) {
                return true;
              }
            }
          }
          return false;
        };

        // condense elements. These can be nodes or branches depending on the callback.
        var shiftElementsCloser = function shiftElementsCloser(callback, levels, centerParents) {
          for (var i = 0; i < levels.length; i++) {
            var level = levels[i];
            var levelNodes = _this2.distributionOrdering[level];
            if (levelNodes.length > 1) {
              for (var j = 0; j < levelNodes.length - 1; j++) {
                if (hasSameParent(levelNodes[j], levelNodes[j + 1]) === true) {
                  if (_this2.hierarchicalTrees[levelNodes[j].id] === _this2.hierarchicalTrees[levelNodes[j + 1].id]) {
                    callback(levelNodes[j], levelNodes[j + 1], centerParents);
                  }
                }
              }
            }
          }
        };

        // callback for shifting branches
        var branchShiftCallback = function branchShiftCallback(node1, node2) {
          var centerParent = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

          //window.CALLBACKS.push(() => {
          var pos1 = _this2._getPositionForHierarchy(node1);
          var pos2 = _this2._getPositionForHierarchy(node2);
          var diffAbs = Math.abs(pos2 - pos1);
          //console.log("NOW CHEcKING:", node1.id, node2.id, diffAbs);
          if (diffAbs > _this2.options.hierarchical.nodeSpacing) {
            var branchNodes1 = {};branchNodes1[node1.id] = true;
            var branchNodes2 = {};branchNodes2[node2.id] = true;

            getBranchNodes(node1, branchNodes1);
            getBranchNodes(node2, branchNodes2);

            // check the largest distance between the branches
            var maxLevel = getCollisionLevel(node1, node2);

            var _getBranchBoundary = getBranchBoundary(branchNodes1, maxLevel);

            var _getBranchBoundary2 = _slicedToArray(_getBranchBoundary, 4);

            var min1 = _getBranchBoundary2[0];
            var max1 = _getBranchBoundary2[1];
            var minSpace1 = _getBranchBoundary2[2];
            var maxSpace1 = _getBranchBoundary2[3];

            var _getBranchBoundary3 = getBranchBoundary(branchNodes2, maxLevel);

            var _getBranchBoundary32 = _slicedToArray(_getBranchBoundary3, 4);

            var min2 = _getBranchBoundary32[0];
            var max2 = _getBranchBoundary32[1];
            var minSpace2 = _getBranchBoundary32[2];
            var maxSpace2 = _getBranchBoundary32[3];

            //console.log(node1.id, getBranchBoundary(branchNodes1, maxLevel), node2.id, getBranchBoundary(branchNodes2, maxLevel), maxLevel);
            var diffBranch = Math.abs(max1 - min2);
            if (diffBranch > _this2.options.hierarchical.nodeSpacing) {
              var offset = max1 - min2 + _this2.options.hierarchical.nodeSpacing;
              if (offset < -minSpace2 + _this2.options.hierarchical.nodeSpacing) {
                offset = -minSpace2 + _this2.options.hierarchical.nodeSpacing;
                //console.log("RESETTING OFFSET", max1 - min2 + this.options.hierarchical.nodeSpacing, -minSpace2, offset);
              }
              if (offset < 0) {
                //console.log("SHIFTING", node2.id, offset);
                _this2._shiftBlock(node2.id, offset);
                stillShifting = true;

                if (centerParent === true) _this2._centerParent(node2);
              }
            }
          }
          //this.body.emitter.emit("_redraw");})
        };

        var minimizeEdgeLength = function minimizeEdgeLength(iterations, node) {
          //window.CALLBACKS.push(() => {
          //  console.log("ts",node.id);
          var nodeId = node.id;
          var allEdges = node.edges;
          var nodeLevel = _this2.hierarchicalLevels[node.id];

          // gather constants
          var C2 = _this2.options.hierarchical.levelSeparation * _this2.options.hierarchical.levelSeparation;
          var referenceNodes = {};
          var aboveEdges = [];
          for (var i = 0; i < allEdges.length; i++) {
            var edge = allEdges[i];
            if (edge.toId != edge.fromId) {
              var otherNode = edge.toId == nodeId ? edge.from : edge.to;
              referenceNodes[allEdges[i].id] = otherNode;
              if (_this2.hierarchicalLevels[otherNode.id] < nodeLevel) {
                aboveEdges.push(edge);
              }
            }
          }

          // differentiated sum of lengths based on only moving one node over one axis
          var getFx = function getFx(point, edges) {
            var sum = 0;
            for (var i = 0; i < edges.length; i++) {
              if (referenceNodes[edges[i].id] !== undefined) {
                var a = _this2._getPositionForHierarchy(referenceNodes[edges[i].id]) - point;
                sum += a / Math.sqrt(a * a + C2);
              }
            }
            return sum;
          };

          // doubly differentiated sum of lengths based on only moving one node over one axis
          var getDFx = function getDFx(point, edges) {
            var sum = 0;
            for (var i = 0; i < edges.length; i++) {
              if (referenceNodes[edges[i].id] !== undefined) {
                var a = _this2._getPositionForHierarchy(referenceNodes[edges[i].id]) - point;
                sum -= C2 * Math.pow(a * a + C2, -1.5);
              }
            }
            return sum;
          };

          var getGuess = function getGuess(iterations, edges) {
            var guess = _this2._getPositionForHierarchy(node);
            // Newton's method for optimization
            var guessMap = {};
            for (var i = 0; i < iterations; i++) {
              var fx = getFx(guess, edges);
              var dfx = getDFx(guess, edges);

              // we limit the movement to avoid instability.
              var limit = 40;
              var ratio = Math.max(-limit, Math.min(limit, Math.round(fx / dfx)));
              guess = guess - ratio;
              // reduce duplicates
              if (guessMap[guess] !== undefined) {
                break;
              }
              guessMap[guess] = i;
            }
            return guess;
          };

          var moveBranch = function moveBranch(guess) {
            // position node if there is space
            var nodePosition = _this2._getPositionForHierarchy(node);

            // check movable area of the branch
            if (branches[node.id] === undefined) {
              var branchNodes = {};
              branchNodes[node.id] = true;
              getBranchNodes(node, branchNodes);
              branches[node.id] = branchNodes;
            }

            var _getBranchBoundary4 = getBranchBoundary(branches[node.id]);

            var _getBranchBoundary42 = _slicedToArray(_getBranchBoundary4, 4);

            var minBranch = _getBranchBoundary42[0];
            var maxBranch = _getBranchBoundary42[1];
            var minSpaceBranch = _getBranchBoundary42[2];
            var maxSpaceBranch = _getBranchBoundary42[3];

            var diff = guess - nodePosition;

            // check if we are allowed to move the node:
            var branchOffset = 0;
            if (diff > 0) {
              branchOffset = Math.min(diff, maxSpaceBranch - _this2.options.hierarchical.nodeSpacing);
            } else if (diff < 0) {
              branchOffset = -Math.min(-diff, minSpaceBranch - _this2.options.hierarchical.nodeSpacing);
            }

            if (branchOffset != 0) {
              //console.log("moving branch:",branchOffset, maxSpaceBranch, minSpaceBranch)
              _this2._shiftBlock(node.id, branchOffset);
              //this.body.emitter.emit("_redraw");
              stillShifting = true;
            }
          };

          var moveNode = function moveNode(guess) {
            var nodePosition = _this2._getPositionForHierarchy(node);

            // position node if there is space

            var _getSpaceAroundNode3 = _this2._getSpaceAroundNode(node);

            var _getSpaceAroundNode32 = _slicedToArray(_getSpaceAroundNode3, 2);

            var minSpace = _getSpaceAroundNode32[0];
            var maxSpace = _getSpaceAroundNode32[1];

            var diff = guess - nodePosition;
            // check if we are allowed to move the node:
            var newPosition = nodePosition;
            if (diff > 0) {
              newPosition = Math.min(nodePosition + (maxSpace - _this2.options.hierarchical.nodeSpacing), guess);
            } else if (diff < 0) {
              newPosition = Math.max(nodePosition - (minSpace - _this2.options.hierarchical.nodeSpacing), guess);
            }

            if (newPosition !== nodePosition) {
              //console.log("moving Node:",diff, minSpace, maxSpace)
              _this2._setPositionForHierarchy(node, newPosition, undefined, true);
              //this.body.emitter.emit("_redraw");
              stillShifting = true;
            }
          };

          var guess = getGuess(iterations, aboveEdges);
          moveBranch(guess);
          guess = getGuess(iterations, allEdges);
          moveNode(guess);
          //})
        };

        // method to remove whitespace between branches. Because we do bottom up, we can center the parents.
        var minimizeEdgeLengthBottomUp = function minimizeEdgeLengthBottomUp(iterations) {
          var levels = Object.keys(_this2.distributionOrdering);
          levels = levels.reverse();
          for (var i = 0; i < iterations; i++) {
            stillShifting = false;
            for (var j = 0; j < levels.length; j++) {
              var level = levels[j];
              var levelNodes = _this2.distributionOrdering[level];
              for (var k = 0; k < levelNodes.length; k++) {
                minimizeEdgeLength(1000, levelNodes[k]);
              }
            }
            if (stillShifting !== true) {
              //console.log("FINISHED minimizeEdgeLengthBottomUp IN " + i);
              break;
            }
          }
        };

        //// method to remove whitespace between branches. Because we do bottom up, we can center the parents.
        var shiftBranchesCloserBottomUp = function shiftBranchesCloserBottomUp(iterations) {
          var levels = Object.keys(_this2.distributionOrdering);
          levels = levels.reverse();
          for (var i = 0; i < iterations; i++) {
            stillShifting = false;
            shiftElementsCloser(branchShiftCallback, levels, true);
            if (stillShifting !== true) {
              //console.log("FINISHED shiftBranchesCloserBottomUp IN " + (i+1));
              break;
            }
          }
        };

        // center all parents
        var centerAllParents = function centerAllParents() {
          for (var nodeId in _this2.body.nodes) {
            if (_this2.body.nodes.hasOwnProperty(nodeId)) _this2._centerParent(_this2.body.nodes[nodeId]);
          }
        };

        // the actual work is done here.
        if (this.options.hierarchical.blockShifting === true) {
          shiftBranchesCloserBottomUp(5);
          centerAllParents();
        }

        // minimize edge length
        if (this.options.hierarchical.edgeMinimization === true) {
          minimizeEdgeLengthBottomUp(20);
        }

        shiftTrees();
      }

      /**
       * This gives the space around the node. IF a map is supplied, it will only check against nodes NOT in the map.
       * This is used to only get the distances to nodes outside of a branch.
       * @param node
       * @param map
       * @returns {*[]}
       * @private
       */
    }, {
      key: '_getSpaceAroundNode',
      value: function _getSpaceAroundNode(node, map) {
        var useMap = true;
        if (map === undefined) {
          useMap = false;
        }
        var level = this.hierarchicalLevels[node.id];
        if (level !== undefined) {
          var index = this.distributionIndex[node.id];
          var position = this._getPositionForHierarchy(node);
          var minSpace = 1e9;
          var maxSpace = 1e9;
          if (index !== 0) {
            var prevNode = this.distributionOrdering[level][index - 1];
            if (useMap === true && map[prevNode.id] === undefined || useMap === false) {
              var prevPos = this._getPositionForHierarchy(prevNode);
              minSpace = position - prevPos;
            }
          }

          if (index != this.distributionOrdering[level].length - 1) {
            var nextNode = this.distributionOrdering[level][index + 1];
            if (useMap === true && map[nextNode.id] === undefined || useMap === false) {
              var nextPos = this._getPositionForHierarchy(nextNode);
              maxSpace = Math.min(maxSpace, nextPos - position);
            }
          }

          return [minSpace, maxSpace];
        } else {
          return [0, 0];
        }
      }

      /**
       * We use this method to center a parent node and check if it does not cross other nodes when it does.
       * @param node
       * @private
       */
    }, {
      key: '_centerParent',
      value: function _centerParent(node) {
        if (this.hierarchicalChildren[node.id]) {
          var parents = this.hierarchicalChildren[node.id].parents;
          for (var i = 0; i < parents.length; i++) {
            var parentId = parents[i];
            var parentNode = this.body.nodes[parentId];
            if (this.hierarchicalParents[parentId]) {
              // get the range of the children
              var minPos = 1e9;
              var maxPos = -1e9;
              var children = this.hierarchicalParents[parentId].children;
              if (children.length > 0) {
                for (var _i = 0; _i < children.length; _i++) {
                  var childNode = this.body.nodes[children[_i]];
                  minPos = Math.min(minPos, this._getPositionForHierarchy(childNode));
                  maxPos = Math.max(maxPos, this._getPositionForHierarchy(childNode));
                }
              }

              var position = this._getPositionForHierarchy(parentNode);

              var _getSpaceAroundNode4 = this._getSpaceAroundNode(parentNode);

              var _getSpaceAroundNode42 = _slicedToArray(_getSpaceAroundNode4, 2);

              var minSpace = _getSpaceAroundNode42[0];
              var maxSpace = _getSpaceAroundNode42[1];

              var newPosition = 0.5 * (minPos + maxPos);
              var diff = position - newPosition;
              if (diff < 0 && Math.abs(diff) < maxSpace - this.options.hierarchical.nodeSpacing || diff > 0 && Math.abs(diff) < minSpace - this.options.hierarchical.nodeSpacing) {
                this._setPositionForHierarchy(parentNode, newPosition, undefined, true);
              }
            }
          }
        }
      }

      /**
       * This function places the nodes on the canvas based on the hierarchial distribution.
       *
       * @param {Object} distribution | obtained by the function this._getDistribution()
       * @private
       */
    }, {
      key: '_placeNodesByHierarchy',
      value: function _placeNodesByHierarchy(distribution) {
        this.positionedNodes = {};
        // start placing all the level 0 nodes first. Then recursively position their branches.
        for (var level in distribution) {
          if (distribution.hasOwnProperty(level)) {
            // sort nodes in level by position:
            var nodeArray = Object.keys(distribution[level]);
            nodeArray = this._indexArrayToNodes(nodeArray);
            this._sortNodeArray(nodeArray);

            for (var i = 0; i < nodeArray.length; i++) {
              var node = nodeArray[i];
              if (this.positionedNodes[node.id] === undefined) {
                this._setPositionForHierarchy(node, this.options.hierarchical.nodeSpacing * i, level);
                this.positionedNodes[node.id] = true;
                this._placeBranchNodes(node.id, level);
              }
            }
          }
        }
      }

      /**
       * Receives an array with node indices and returns an array with the actual node references. Used for sorting based on
       * node properties.
       * @param idArray
       */
    }, {
      key: '_indexArrayToNodes',
      value: function _indexArrayToNodes(idArray) {
        var array = [];
        for (var i = 0; i < idArray.length; i++) {
          array.push(this.body.nodes[idArray[i]]);
        }
        return array;
      }

      /**
       * This function get the distribution of levels based on hubsize
       *
       * @returns {Object}
       * @private
       */
    }, {
      key: '_getDistribution',
      value: function _getDistribution() {
        var distribution = {};
        var nodeId = undefined,
            node = undefined;

        // we fix Y because the hierarchy is vertical, we fix X so we do not give a node an x position for a second time.
        // the fix of X is removed after the x value has been set.
        for (nodeId in this.body.nodes) {
          if (this.body.nodes.hasOwnProperty(nodeId)) {
            node = this.body.nodes[nodeId];
            var level = this.hierarchicalLevels[nodeId] === undefined ? 0 : this.hierarchicalLevels[nodeId];
            if (this.options.hierarchical.direction === 'UD' || this.options.hierarchical.direction === 'DU') {
              node.y = this.options.hierarchical.levelSeparation * level;
              node.options.fixed.y = true;
            } else {
              node.x = this.options.hierarchical.levelSeparation * level;
              node.options.fixed.x = true;
            }
            if (distribution[level] === undefined) {
              distribution[level] = {};
            }
            distribution[level][nodeId] = node;
          }
        }
        return distribution;
      }

      /**
       * Get the hubsize from all remaining unlevelled nodes.
       *
       * @returns {number}
       * @private
       */
    }, {
      key: '_getHubSize',
      value: function _getHubSize() {
        var hubSize = 0;
        for (var nodeId in this.body.nodes) {
          if (this.body.nodes.hasOwnProperty(nodeId)) {
            var node = this.body.nodes[nodeId];
            if (this.hierarchicalLevels[nodeId] === undefined) {
              hubSize = node.edges.length < hubSize ? hubSize : node.edges.length;
            }
          }
        }
        return hubSize;
      }

      /**
       * this function allocates nodes in levels based on the recursive branching from the largest hubs.
       *
       * @param hubsize
       * @private
       */
    }, {
      key: '_determineLevelsByHubsize',
      value: function _determineLevelsByHubsize() {
        var _this3 = this;

        var hubSize = 1;

        var levelDownstream = function levelDownstream(nodeA, nodeB) {
          if (_this3.hierarchicalLevels[nodeB.id] === undefined) {
            // set initial level
            if (_this3.hierarchicalLevels[nodeA.id] === undefined) {
              _this3.hierarchicalLevels[nodeA.id] = 0;
            }
            // set level
            _this3.hierarchicalLevels[nodeB.id] = _this3.hierarchicalLevels[nodeA.id] + 1;
          }
        };

        while (hubSize > 0) {
          // determine hubs
          hubSize = this._getHubSize();
          if (hubSize === 0) break;

          for (var nodeId in this.body.nodes) {
            if (this.body.nodes.hasOwnProperty(nodeId)) {
              var node = this.body.nodes[nodeId];
              if (node.edges.length === hubSize) {
                this._crawlNetwork(levelDownstream, nodeId);
              }
            }
          }
        }
      }

      /**
       * TODO: release feature
       * @private
       */
    }, {
      key: '_determineLevelsCustomCallback',
      value: function _determineLevelsCustomCallback() {
        var _this4 = this;

        var minLevel = 100000;

        // TODO: this should come from options.
        var customCallback = function customCallback(nodeA, nodeB, edge) {};

        var levelByDirection = function levelByDirection(nodeA, nodeB, edge) {
          var levelA = _this4.hierarchicalLevels[nodeA.id];
          // set initial level
          if (levelA === undefined) {
            _this4.hierarchicalLevels[nodeA.id] = minLevel;
          }

          var diff = customCallback(_NetworkUtil2['default'].cloneOptions(nodeA, 'node'), _NetworkUtil2['default'].cloneOptions(nodeB, 'node'), _NetworkUtil2['default'].cloneOptions(edge, 'edge'));

          _this4.hierarchicalLevels[nodeB.id] = _this4.hierarchicalLevels[nodeA.id] + diff;
        };

        this._crawlNetwork(levelByDirection);
        this._setMinLevelToZero();
      }

      /**
       * this function allocates nodes in levels based on the direction of the edges
       *
       * @param hubsize
       * @private
       */
    }, {
      key: '_determineLevelsDirected',
      value: function _determineLevelsDirected() {
        var _this5 = this;

        var minLevel = 10000;
        var levelByDirection = function levelByDirection(nodeA, nodeB, edge) {
          var levelA = _this5.hierarchicalLevels[nodeA.id];
          // set initial level
          if (levelA === undefined) {
            _this5.hierarchicalLevels[nodeA.id] = minLevel;
          }
          if (edge.toId == nodeB.id) {
            _this5.hierarchicalLevels[nodeB.id] = _this5.hierarchicalLevels[nodeA.id] + 1;
          } else {
            _this5.hierarchicalLevels[nodeB.id] = _this5.hierarchicalLevels[nodeA.id] - 1;
          }
        };
        this._crawlNetwork(levelByDirection);
        this._setMinLevelToZero();
      }

      /**
       * Small util method to set the minimum levels of the nodes to zero.
       * @private
       */
    }, {
      key: '_setMinLevelToZero',
      value: function _setMinLevelToZero() {
        var minLevel = 1e9;
        // get the minimum level
        for (var nodeId in this.body.nodes) {
          if (this.body.nodes.hasOwnProperty(nodeId)) {
            if (this.hierarchicalLevels[nodeId] !== undefined) {
              minLevel = Math.min(this.hierarchicalLevels[nodeId], minLevel);
            }
          }
        }

        // subtract the minimum from the set so we have a range starting from 0
        for (var nodeId in this.body.nodes) {
          if (this.body.nodes.hasOwnProperty(nodeId)) {
            if (this.hierarchicalLevels[nodeId] !== undefined) {
              this.hierarchicalLevels[nodeId] -= minLevel;
            }
          }
        }
      }

      /**
       * Update the bookkeeping of parent and child.
       * @private
       */
    }, {
      key: '_generateMap',
      value: function _generateMap() {
        var _this6 = this;

        var fillInRelations = function fillInRelations(parentNode, childNode) {
          if (_this6.hierarchicalLevels[childNode.id] > _this6.hierarchicalLevels[parentNode.id]) {
            var parentNodeId = parentNode.id;
            var childNodeId = childNode.id;
            if (_this6.hierarchicalParents[parentNodeId] === undefined) {
              _this6.hierarchicalParents[parentNodeId] = { children: [], amount: 0 };
            }
            _this6.hierarchicalParents[parentNodeId].children.push(childNodeId);
            if (_this6.hierarchicalChildren[childNodeId] === undefined) {
              _this6.hierarchicalChildren[childNodeId] = { parents: [], amount: 0 };
            }
            _this6.hierarchicalChildren[childNodeId].parents.push(parentNodeId);
          }
        };

        this._crawlNetwork(fillInRelations);
      }

      /**
       * Crawl over the entire network and use a callback on each node couple that is connected to each other.
       * @param callback          | will receive nodeA nodeB and the connecting edge. A and B are unique.
       * @param startingNodeId
       * @private
       */
    }, {
      key: '_crawlNetwork',
      value: function _crawlNetwork(callback, startingNodeId) {
        if (callback === undefined) callback = function () {};

        var progress = {};
        var crawler = function crawler(node) {
          if (progress[node.id] === undefined) {
            progress[node.id] = true;
            var childNode = undefined;
            for (var i = 0; i < node.edges.length; i++) {
              if (node.edges[i].connected === true) {
                if (node.edges[i].toId === node.id) {
                  childNode = node.edges[i].from;
                } else {
                  childNode = node.edges[i].to;
                }

                if (node.id !== childNode.id) {
                  callback(node, childNode, node.edges[i]);
                  crawler(childNode);
                }
              }
            }
          }
        };

        // we can crawl from a specific node or over all nodes.
        if (startingNodeId === undefined) {
          for (var i = 0; i < this.body.nodeIndices.length; i++) {
            var node = this.body.nodes[this.body.nodeIndices[i]];
            crawler(node);
          }
        } else {
          var node = this.body.nodes[startingNodeId];
          if (node === undefined) {
            console.error("Node not found:", startingNodeId);
            return;
          }
          crawler(node);
        }
      }

      /**
       * This is a recursively called function to enumerate the branches from the largest hubs and place the nodes
       * on a X position that ensures there will be no overlap.
       *
       * @param parentId
       * @param parentLevel
       * @private
       */
    }, {
      key: '_placeBranchNodes',
      value: function _placeBranchNodes(parentId, parentLevel) {
        // if this is not a parent, cancel the placing. This can happen with multiple parents to one child.
        if (this.hierarchicalParents[parentId] === undefined) {
          return;
        }

        // get a list of childNodes
        var childNodes = [];
        for (var i = 0; i < this.hierarchicalParents[parentId].children.length; i++) {
          childNodes.push(this.body.nodes[this.hierarchicalParents[parentId].children[i]]);
        }

        // use the positions to order the nodes.
        this._sortNodeArray(childNodes);

        // position the childNodes
        for (var i = 0; i < childNodes.length; i++) {
          var childNode = childNodes[i];
          var childNodeLevel = this.hierarchicalLevels[childNode.id];
          // check if the child node is below the parent node and if it has already been positioned.
          if (childNodeLevel > parentLevel && this.positionedNodes[childNode.id] === undefined) {
            // get the amount of space required for this node. If parent the width is based on the amount of children.
            var pos = undefined;

            // we get the X or Y values we need and store them in pos and previousPos. The get and set make sure we get X or Y
            if (i === 0) {
              pos = this._getPositionForHierarchy(this.body.nodes[parentId]);
            } else {
              pos = this._getPositionForHierarchy(childNodes[i - 1]) + this.options.hierarchical.nodeSpacing;
            }
            this._setPositionForHierarchy(childNode, pos, childNodeLevel);

            // if overlap has been detected, we shift the branch
            if (this.lastNodeOnLevel[childNodeLevel] !== undefined) {
              var previousPos = this._getPositionForHierarchy(this.body.nodes[this.lastNodeOnLevel[childNodeLevel]]);
              if (pos - previousPos < this.options.hierarchical.nodeSpacing) {
                var diff = previousPos + this.options.hierarchical.nodeSpacing - pos;
                var sharedParent = this._findCommonParent(this.lastNodeOnLevel[childNodeLevel], childNode.id);
                this._shiftBlock(sharedParent.withChild, diff);
              }
            }

            // store change in position.
            this.lastNodeOnLevel[childNodeLevel] = childNode.id;

            this.positionedNodes[childNode.id] = true;

            this._placeBranchNodes(childNode.id, childNodeLevel);
          } else {
            return;
          }
        }

        // center the parent nodes.
        var minPos = 1e9;
        var maxPos = -1e9;
        for (var i = 0; i < childNodes.length; i++) {
          var childNodeId = childNodes[i].id;
          minPos = Math.min(minPos, this._getPositionForHierarchy(this.body.nodes[childNodeId]));
          maxPos = Math.max(maxPos, this._getPositionForHierarchy(this.body.nodes[childNodeId]));
        }
        this._setPositionForHierarchy(this.body.nodes[parentId], 0.5 * (minPos + maxPos), parentLevel);
      }

      /**
       * Shift a branch a certain distance
       * @param parentId
       * @param diff
       * @private
       */
    }, {
      key: '_shiftBlock',
      value: function _shiftBlock(parentId, diff) {
        if (this.options.hierarchical.direction === 'UD' || this.options.hierarchical.direction === 'DU') {
          this.body.nodes[parentId].x += diff;
        } else {
          this.body.nodes[parentId].y += diff;
        }
        if (this.hierarchicalParents[parentId] !== undefined) {
          for (var i = 0; i < this.hierarchicalParents[parentId].children.length; i++) {
            this._shiftBlock(this.hierarchicalParents[parentId].children[i], diff);
          }
        }
      }

      /**
       * Find a common parent between branches.
       * @param childA
       * @param childB
       * @returns {{foundParent, withChild}}
       * @private
       */
    }, {
      key: '_findCommonParent',
      value: function _findCommonParent(childA, childB) {
        var _this7 = this;

        var parents = {};
        var iterateParents = function iterateParents(parents, child) {
          if (_this7.hierarchicalChildren[child] !== undefined) {
            for (var i = 0; i < _this7.hierarchicalChildren[child].parents.length; i++) {
              var _parent = _this7.hierarchicalChildren[child].parents[i];
              parents[_parent] = true;
              iterateParents(parents, _parent);
            }
          }
        };
        var findParent = function findParent(parents, child) {
          if (_this7.hierarchicalChildren[child] !== undefined) {
            for (var i = 0; i < _this7.hierarchicalChildren[child].parents.length; i++) {
              var _parent2 = _this7.hierarchicalChildren[child].parents[i];
              if (parents[_parent2] !== undefined) {
                return { foundParent: _parent2, withChild: child };
              }
              var branch = findParent(parents, _parent2);
              if (branch.foundParent !== null) {
                return branch;
              }
            }
          }
          return { foundParent: null, withChild: child };
        };

        iterateParents(parents, childA);
        return findParent(parents, childB);
      }

      /**
       * Abstract the getting of the position so we won't have to repeat the check for direction all the time
       * @param node
       * @param position
       * @param level
       * @private
       */
    }, {
      key: '_setPositionForHierarchy',
      value: function _setPositionForHierarchy(node, position, level) {
        var doNotUpdate = arguments.length <= 3 || arguments[3] === undefined ? false : arguments[3];

        if (doNotUpdate !== true) {
          if (this.distributionOrdering[level] === undefined) {
            this.distributionOrdering[level] = [];
            this.distributionOrderingPresence[level] = {};
          }

          if (this.distributionOrderingPresence[level][node.id] === undefined) {
            this.distributionOrdering[level].push(node);
            this.distributionIndex[node.id] = this.distributionOrdering[level].length - 1;
          }
          this.distributionOrderingPresence[level][node.id] = true;

          if (this.hierarchicalTrees[node.id] === undefined) {
            if (this.hierarchicalChildren[node.id] !== undefined) {
              var tree = 1;
              // get the lowest tree denominator.
              for (var i = 0; i < this.hierarchicalChildren[node.id].parents.length; i++) {
                var parentId = this.hierarchicalChildren[node.id].parents[i];
                if (this.hierarchicalTrees[parentId] !== undefined) {
                  //tree = Math.min(tree,this.hierarchicalTrees[parentId]);
                  tree = this.hierarchicalTrees[parentId];
                }
              }
              //for (let i = 0; i < this.hierarchicalChildren.parents.length; i++) {
              //  let parentId = this.hierarchicalChildren.parents[i];
              //  this.hierarchicalTrees[parentId] = tree;
              //}
              this.hierarchicalTrees[node.id] = tree;
            } else {
              this.hierarchicalTrees[node.id] = ++this.treeIndex;
            }
          }
        }

        if (this.options.hierarchical.direction === 'UD' || this.options.hierarchical.direction === 'DU') {
          node.x = position;
        } else {
          node.y = position;
        }
      }

      /**
       * Abstract the getting of the position of a node so we do not have to repeat the direction check all the time.
       * @param node
       * @returns {number|*}
       * @private
       */
    }, {
      key: '_getPositionForHierarchy',
      value: function _getPositionForHierarchy(node) {
        if (this.options.hierarchical.direction === 'UD' || this.options.hierarchical.direction === 'DU') {
          return node.x;
        } else {
          return node.y;
        }
      }

      /**
       * Use the x or y value to sort the array, allowing users to specify order.
       * @param nodeArray
       * @private
       */
    }, {
      key: '_sortNodeArray',
      value: function _sortNodeArray(nodeArray) {
        if (nodeArray.length > 1) {
          if (this.options.hierarchical.direction === 'UD' || this.options.hierarchical.direction === 'DU') {
            nodeArray.sort(function (a, b) {
              return a.x - b.x;
            });
          } else {
            nodeArray.sort(function (a, b) {
              return a.y - b.y;
            });
          }
        }
      }
    }]);

    return LayoutEngine;
  })();

  exports['default'] = LayoutEngine;
  module.exports = exports['default'];

/***/ },
/* 109 */
/***/ function(module, exports, __webpack_require__) {

  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

  var util = __webpack_require__(1);
  var Hammer = __webpack_require__(20);
  var hammerUtil = __webpack_require__(24);

  /**
   * clears the toolbar div element of children
   *
   * @private
   */

  var ManipulationSystem = (function () {
    function ManipulationSystem(body, canvas, selectionHandler) {
      var _this = this;

      _classCallCheck(this, ManipulationSystem);

      this.body = body;
      this.canvas = canvas;
      this.selectionHandler = selectionHandler;

      this.editMode = false;
      this.manipulationDiv = undefined;
      this.editModeDiv = undefined;
      this.closeDiv = undefined;

      this.manipulationHammers = [];
      this.temporaryUIFunctions = {};
      this.temporaryEventFunctions = [];

      this.touchTime = 0;
      this.temporaryIds = { nodes: [], edges: [] };
      this.guiEnabled = false;
      this.inMode = false;
      this.selectedControlNode = undefined;

      this.options = {};
      this.defaultOptions = {
        enabled: false,
        initiallyActive: false,
        addNode: true,
        addEdge: true,
        editNode: undefined,
        editEdge: true,
        deleteNode: true,
        deleteEdge: true,
        controlNodeStyle: {
          shape: 'dot',
          size: 6,
          color: { background: '#ff0000', border: '#3c3c3c', highlight: { background: '#07f968', border: '#3c3c3c' } },
          borderWidth: 2,
          borderWidthSelected: 2
        }
      };
      util.extend(this.options, this.defaultOptions);

      this.body.emitter.on('destroy', function () {
        _this._clean();
      });
      this.body.emitter.on('_dataChanged', this._restore.bind(this));
      this.body.emitter.on('_resetData', this._restore.bind(this));
    }

    /**
     * If something changes in the data during editing, switch back to the initial datamanipulation state and close all edit modes.
     * @private
     */

    _createClass(ManipulationSystem, [{
      key: '_restore',
      value: function _restore() {
        if (this.inMode !== false) {
          if (this.options.initiallyActive === true) {
            this.enableEditMode();
          } else {
            this.disableEditMode();
          }
        }
      }

      /**
       * Set the Options
       * @param options
       */
    }, {
      key: 'setOptions',
      value: function setOptions(options, allOptions, globalOptions) {
        if (allOptions !== undefined) {
          if (allOptions.locale !== undefined) {
            this.options.locale = allOptions.locale;
          } else {
            this.options.locale = globalOptions.locale;
          }
          if (allOptions.locales !== undefined) {
            this.options.locales = allOptions.locales;
          } else {
            this.options.locales = globalOptions.locales;
          }
        }

        if (options !== undefined) {
          if (typeof options === 'boolean') {
            this.options.enabled = options;
          } else {
            this.options.enabled = true;
            util.deepExtend(this.options, options);
          }
          if (this.options.initiallyActive === true) {
            this.editMode = true;
          }
          this._setup();
        }
      }

      /**
       * Enable or disable edit-mode. Draws the DOM required and cleans up after itself.
       *
       * @private
       */
    }, {
      key: 'toggleEditMode',
      value: function toggleEditMode() {
        if (this.editMode === true) {
          this.disableEditMode();
        } else {
          this.enableEditMode();
        }
      }
    }, {
      key: 'enableEditMode',
      value: function enableEditMode() {
        this.editMode = true;

        this._clean();
        if (this.guiEnabled === true) {
          this.manipulationDiv.style.display = 'block';
          this.closeDiv.style.display = 'block';
          this.editModeDiv.style.display = 'none';
          this.showManipulatorToolbar();
        }
      }
    }, {
      key: 'disableEditMode',
      value: function disableEditMode() {
        this.editMode = false;

        this._clean();
        if (this.guiEnabled === true) {
          this.manipulationDiv.style.display = 'none';
          this.closeDiv.style.display = 'none';
          this.editModeDiv.style.display = 'block';
          this._createEditButton();
        }
      }

      /**
       * Creates the main toolbar. Removes functions bound to the select event. Binds all the buttons of the toolbar.
       *
       * @private
       */
    }, {
      key: 'showManipulatorToolbar',
      value: function showManipulatorToolbar() {
        // restore the state of any bound functions or events, remove control nodes, restore physics
        this._clean();

        // reset global variables
        this.manipulationDOM = {};

        // if the gui is enabled, draw all elements.
        if (this.guiEnabled === true) {
          // a _restore will hide these menus
          this.editMode = true;
          this.manipulationDiv.style.display = 'block';
          this.closeDiv.style.display = 'block';

          var selectedNodeCount = this.selectionHandler._getSelectedNodeCount();
          var selectedEdgeCount = this.selectionHandler._getSelectedEdgeCount();
          var selectedTotalCount = selectedNodeCount + selectedEdgeCount;
          var locale = this.options.locales[this.options.locale];
          var needSeperator = false;

          if (this.options.addNode !== false) {
            this._createAddNodeButton(locale);
            needSeperator = true;
          }
          if (this.options.addEdge !== false) {
            if (needSeperator === true) {
              this._createSeperator(1);
            } else {
              needSeperator = true;
            }
            this._createAddEdgeButton(locale);
          }

          if (selectedNodeCount === 1 && typeof this.options.editNode === 'function') {
            if (needSeperator === true) {
              this._createSeperator(2);
            } else {
              needSeperator = true;
            }
            this._createEditNodeButton(locale);
          } else if (selectedEdgeCount === 1 && selectedNodeCount === 0 && this.options.editEdge !== false) {
            if (needSeperator === true) {
              this._createSeperator(3);
            } else {
              needSeperator = true;
            }
            this._createEditEdgeButton(locale);
          }

          // remove buttons
          if (selectedTotalCount !== 0) {
            if (selectedNodeCount > 0 && this.options.deleteNode !== false) {
              if (needSeperator === true) {
                this._createSeperator(4);
              }
              this._createDeleteButton(locale);
            } else if (selectedNodeCount === 0 && this.options.deleteEdge !== false) {
              if (needSeperator === true) {
                this._createSeperator(4);
              }
              this._createDeleteButton(locale);
            }
          }

          // bind the close button
          this._bindHammerToDiv(this.closeDiv, this.toggleEditMode.bind(this));

          // refresh this bar based on what has been selected
          this._temporaryBindEvent('select', this.showManipulatorToolbar.bind(this));
        }

        // redraw to show any possible changes
        this.body.emitter.emit('_redraw');
      }

      /**
       * Create the toolbar for adding Nodes
       */
    }, {
      key: 'addNodeMode',
      value: function addNodeMode() {
        // when using the gui, enable edit mode if it wasnt already.
        if (this.editMode !== true) {
          this.enableEditMode();
        }

        // restore the state of any bound functions or events, remove control nodes, restore physics
        this._clean();

        this.inMode = 'addNode';
        if (this.guiEnabled === true) {
          var locale = this.options.locales[this.options.locale];
          this.manipulationDOM = {};
          this._createBackButton(locale);
          this._createSeperator();
          this._createDescription(locale['addDescription'] || this.options.locales['en']['addDescription']);

          // bind the close button
          this._bindHammerToDiv(this.closeDiv, this.toggleEditMode.bind(this));
        }

        this._temporaryBindEvent('click', this._performAddNode.bind(this));
      }

      /**
       * call the bound function to handle the editing of the node. The node has to be selected.
       */
    }, {
      key: 'editNode',
      value: function editNode() {
        var _this2 = this;

        // when using the gui, enable edit mode if it wasnt already.
        if (this.editMode !== true) {
          this.enableEditMode();
        }

        // restore the state of any bound functions or events, remove control nodes, restore physics
        this._clean();
        var node = this.selectionHandler._getSelectedNode();
        if (node !== undefined) {
          this.inMode = 'editNode';
          if (typeof this.options.editNode === 'function') {
            if (node.isCluster !== true) {
              var data = util.deepExtend({}, node.options, true);
              data.x = node.x;
              data.y = node.y;

              if (this.options.editNode.length === 2) {
                this.options.editNode(data, function (finalizedData) {
                  if (finalizedData !== null && finalizedData !== undefined && _this2.inMode === 'editNode') {
                    // if for whatever reason the mode has changes (due to dataset change) disregard the callback) {
                    _this2.body.data.nodes.getDataSet().update(finalizedData);
                  }
                  _this2.showManipulatorToolbar();
                });
              } else {
                throw new Error('The function for edit does not support two arguments (data, callback)');
              }
            } else {
              alert(this.options.locales[this.options.locale]['editClusterError'] || this.options.locales['en']['editClusterError']);
            }
          } else {
            throw new Error('No function has been configured to handle the editing of nodes.');
          }
        } else {
          this.showManipulatorToolbar();
        }
      }

      /**
       * create the toolbar to connect nodes
       */
    }, {
      key: 'addEdgeMode',
      value: function addEdgeMode() {
        // when using the gui, enable edit mode if it wasnt already.
        if (this.editMode !== true) {
          this.enableEditMode();
        }

        // restore the state of any bound functions or events, remove control nodes, restore physics
        this._clean();

        this.inMode = 'addEdge';
        if (this.guiEnabled === true) {
          var locale = this.options.locales[this.options.locale];
          this.manipulationDOM = {};
          this._createBackButton(locale);
          this._createSeperator();
          this._createDescription(locale['edgeDescription'] || this.options.locales['en']['edgeDescription']);

          // bind the close button
          this._bindHammerToDiv(this.closeDiv, this.toggleEditMode.bind(this));
        }

        // temporarily overload functions
        this._temporaryBindUI('onTouch', this._handleConnect.bind(this));
        this._temporaryBindUI('onDragEnd', this._finishConnect.bind(this));
        this._temporaryBindUI('onDrag', this._dragControlNode.bind(this));
        this._temporaryBindUI('onRelease', this._finishConnect.bind(this));

        this._temporaryBindUI('onDragStart', function () {});
        this._temporaryBindUI('onHold', function () {});
      }

      /**
       * create the toolbar to edit edges
       */
    }, {
      key: 'editEdgeMode',
      value: function editEdgeMode() {
        var _this3 = this;

        // when using the gui, enable edit mode if it wasn't already.
        if (this.editMode !== true) {
          this.enableEditMode();
        }

        // restore the state of any bound functions or events, remove control nodes, restore physics
        this._clean();

        this.inMode = 'editEdge';
        if (this.guiEnabled === true) {
          var locale = this.options.locales[this.options.locale];
          this.manipulationDOM = {};
          this._createBackButton(locale);
          this._createSeperator();
          this._createDescription(locale['editEdgeDescription'] || this.options.locales['en']['editEdgeDescription']);

          // bind the close button
          this._bindHammerToDiv(this.closeDiv, this.toggleEditMode.bind(this));
        }

        this.edgeBeingEditedId = this.selectionHandler.getSelectedEdges()[0];
        if (this.edgeBeingEditedId !== undefined) {
          (function () {
            var edge = _this3.body.edges[_this3.edgeBeingEditedId];

            // create control nodes
            var controlNodeFrom = _this3._getNewTargetNode(edge.from.x, edge.from.y);
            var controlNodeTo = _this3._getNewTargetNode(edge.to.x, edge.to.y);

            _this3.temporaryIds.nodes.push(controlNodeFrom.id);
            _this3.temporaryIds.nodes.push(controlNodeTo.id);

            _this3.body.nodes[controlNodeFrom.id] = controlNodeFrom;
            _this3.body.nodeIndices.push(controlNodeFrom.id);
            _this3.body.nodes[controlNodeTo.id] = controlNodeTo;
            _this3.body.nodeIndices.push(controlNodeTo.id);

            // temporarily overload UI functions, cleaned up automatically because of _temporaryBindUI
            _this3._temporaryBindUI('onTouch', _this3._controlNodeTouch.bind(_this3)); // used to get the position
            _this3._temporaryBindUI('onTap', function () {}); // disabled
            _this3._temporaryBindUI('onHold', function () {}); // disabled
            _this3._temporaryBindUI('onDragStart', _this3._controlNodeDragStart.bind(_this3)); // used to select control node
            _this3._temporaryBindUI('onDrag', _this3._controlNodeDrag.bind(_this3)); // used to drag control node
            _this3._temporaryBindUI('onDragEnd', _this3._controlNodeDragEnd.bind(_this3)); // used to connect or revert control nodes
            _this3._temporaryBindUI('onMouseMove', function () {}); // disabled

            // create function to position control nodes correctly on movement
            // automatically cleaned up because we use the temporary bind
            _this3._temporaryBindEvent('beforeDrawing', function (ctx) {
              var positions = edge.edgeType.findBorderPositions(ctx);
              if (controlNodeFrom.selected === false) {
                controlNodeFrom.x = positions.from.x;
                controlNodeFrom.y = positions.from.y;
              }
              if (controlNodeTo.selected === false) {
                controlNodeTo.x = positions.to.x;
                controlNodeTo.y = positions.to.y;
              }
            });

            _this3.body.emitter.emit('_redraw');
          })();
        } else {
          this.showManipulatorToolbar();
        }
      }

      /**
       * delete everything in the selection
       */
    }, {
      key: 'deleteSelected',
      value: function deleteSelected() {
        var _this4 = this;

        // when using the gui, enable edit mode if it wasnt already.
        if (this.editMode !== true) {
          this.enableEditMode();
        }

        // restore the state of any bound functions or events, remove control nodes, restore physics
        this._clean();

        this.inMode = 'delete';
        var selectedNodes = this.selectionHandler.getSelectedNodes();
        var selectedEdges = this.selectionHandler.getSelectedEdges();
        var deleteFunction = undefined;
        if (selectedNodes.length > 0) {
          for (var i = 0; i < selectedNodes.length; i++) {
            if (this.body.nodes[selectedNodes[i]].isCluster === true) {
              alert(this.options.locales[this.options.locale]['deleteClusterError'] || this.options.locales['en']['deleteClusterError']);
              return;
            }
          }

          if (typeof this.options.deleteNode === 'function') {
            deleteFunction = this.options.deleteNode;
          }
        } else if (selectedEdges.length > 0) {
          if (typeof this.options.deleteEdge === 'function') {
            deleteFunction = this.options.deleteEdge;
          }
        }

        if (typeof deleteFunction === 'function') {
          var data = { nodes: selectedNodes, edges: selectedEdges };
          if (deleteFunction.length === 2) {
            deleteFunction(data, function (finalizedData) {
              if (finalizedData !== null && finalizedData !== undefined && _this4.inMode === 'delete') {
                // if for whatever reason the mode has changes (due to dataset change) disregard the callback) {
                _this4.body.data.edges.getDataSet().remove(finalizedData.edges);
                _this4.body.data.nodes.getDataSet().remove(finalizedData.nodes);
                _this4.body.emitter.emit('startSimulation');
                _this4.showManipulatorToolbar();
              } else {
                _this4.body.emitter.emit('startSimulation');
                _this4.showManipulatorToolbar();
              }
            });
          } else {
            throw new Error('The function for delete does not support two arguments (data, callback)');
          }
        } else {
          this.body.data.edges.getDataSet().remove(selectedEdges);
          this.body.data.nodes.getDataSet().remove(selectedNodes);
          this.body.emitter.emit('startSimulation');
          this.showManipulatorToolbar();
        }
      }

      //********************************************** PRIVATE ***************************************//

      /**
       * draw or remove the DOM
       * @private
       */
    }, {
      key: '_setup',
      value: function _setup() {
        if (this.options.enabled === true) {
          // Enable the GUI
          this.guiEnabled = true;

          this._createWrappers();
          if (this.editMode === false) {
            this._createEditButton();
          } else {
            this.showManipulatorToolbar();
          }
        } else {
          this._removeManipulationDOM();

          // disable the gui
          this.guiEnabled = false;
        }
      }

      /**
       * create the div overlays that contain the DOM
       * @private
       */
    }, {
      key: '_createWrappers',
      value: function _createWrappers() {
        // load the manipulator HTML elements. All styling done in css.
        if (this.manipulationDiv === undefined) {
          this.manipulationDiv = document.createElement('div');
          this.manipulationDiv.className = 'vis-manipulation';
          if (this.editMode === true) {
            this.manipulationDiv.style.display = 'block';
          } else {
            this.manipulationDiv.style.display = 'none';
          }
          this.canvas.frame.appendChild(this.manipulationDiv);
        }

        // container for the edit button.
        if (this.editModeDiv === undefined) {
          this.editModeDiv = document.createElement('div');
          this.editModeDiv.className = 'vis-edit-mode';
          if (this.editMode === true) {
            this.editModeDiv.style.display = 'none';
          } else {
            this.editModeDiv.style.display = 'block';
          }
          this.canvas.frame.appendChild(this.editModeDiv);
        }

        // container for the close div button
        if (this.closeDiv === undefined) {
          this.closeDiv = document.createElement('div');
          this.closeDiv.className = 'vis-close';
          this.closeDiv.style.display = this.manipulationDiv.style.display;
          this.canvas.frame.appendChild(this.closeDiv);
        }
      }

      /**
       * generate a new target node. Used for creating new edges and editing edges
       * @param x
       * @param y
       * @returns {*}
       * @private
       */
    }, {
      key: '_getNewTargetNode',
      value: function _getNewTargetNode(x, y) {
        var controlNodeStyle = util.deepExtend({}, this.options.controlNodeStyle);

        controlNodeStyle.id = 'targetNode' + util.randomUUID();
        controlNodeStyle.hidden = false;
        controlNodeStyle.physics = false;
        controlNodeStyle.x = x;
        controlNodeStyle.y = y;

        // we have to define the bounding box in order for the nodes to be drawn immediately
        var node = this.body.functions.createNode(controlNodeStyle);
        node.shape.boundingBox = { left: x, right: x, top: y, bottom: y };

        return node;
      }

      /**
       * Create the edit button
       */
    }, {
      key: '_createEditButton',
      value: function _createEditButton() {
        // restore everything to it's original state (if applicable)
        this._clean();

        // reset the manipulationDOM
        this.manipulationDOM = {};

        // empty the editModeDiv
        util.recursiveDOMDelete(this.editModeDiv);

        // create the contents for the editMode button
        var locale = this.options.locales[this.options.locale];
        var button = this._createButton('editMode', 'vis-button vis-edit vis-edit-mode', locale['edit'] || this.options.locales['en']['edit']);
        this.editModeDiv.appendChild(button);

        // bind a hammer listener to the button, calling the function toggleEditMode.
        this._bindHammerToDiv(button, this.toggleEditMode.bind(this));
      }

      /**
       * this function cleans up after everything this module does. Temporary elements, functions and events are removed, physics restored, hammers removed.
       * @private
       */
    }, {
      key: '_clean',
      value: function _clean() {
        // not in mode
        this.inMode = false;

        // _clean the divs
        if (this.guiEnabled === true) {
          util.recursiveDOMDelete(this.editModeDiv);
          util.recursiveDOMDelete(this.manipulationDiv);

          // removes all the bindings and overloads
          this._cleanManipulatorHammers();
        }

        // remove temporary nodes and edges
        this._cleanupTemporaryNodesAndEdges();

        // restore overloaded UI functions
        this._unbindTemporaryUIs();

        // remove the temporaryEventFunctions
        this._unbindTemporaryEvents();

        // restore the physics if required
        this.body.emitter.emit('restorePhysics');
      }

      /**
       * Each dom element has it's own hammer. They are stored in this.manipulationHammers. This cleans them up.
       * @private
       */
    }, {
      key: '_cleanManipulatorHammers',
      value: function _cleanManipulatorHammers() {
        // _clean hammer bindings
        if (this.manipulationHammers.length != 0) {
          for (var i = 0; i < this.manipulationHammers.length; i++) {
            this.manipulationHammers[i].destroy();
          }
          this.manipulationHammers = [];
        }
      }

      /**
       * Remove all DOM elements created by this module.
       * @private
       */
    }, {
      key: '_removeManipulationDOM',
      value: function _removeManipulationDOM() {
        // removes all the bindings and overloads
        this._clean();

        // empty the manipulation divs
        util.recursiveDOMDelete(this.manipulationDiv);
        util.recursiveDOMDelete(this.editModeDiv);
        util.recursiveDOMDelete(this.closeDiv);

        // remove the manipulation divs
        if (this.manipulationDiv) {
          this.canvas.frame.removeChild(this.manipulationDiv);
        }
        if (this.editModeDiv) {
          this.canvas.frame.removeChild(this.editModeDiv);
        }
        if (this.closeDiv) {
          this.canvas.frame.removeChild(this.closeDiv);
        }

        // set the references to undefined
        this.manipulationDiv = undefined;
        this.editModeDiv = undefined;
        this.closeDiv = undefined;
      }

      /**
       * create a seperator line. the index is to differentiate in the manipulation dom
       * @param index
       * @private
       */
    }, {
      key: '_createSeperator',
      value: function _createSeperator() {
        var index = arguments.length <= 0 || arguments[0] === undefined ? 1 : arguments[0];

        this.manipulationDOM['seperatorLineDiv' + index] = document.createElement('div');
        this.manipulationDOM['seperatorLineDiv' + index].className = 'vis-separator-line';
        this.manipulationDiv.appendChild(this.manipulationDOM['seperatorLineDiv' + index]);
      }

      // ----------------------    DOM functions for buttons    --------------------------//

    }, {
      key: '_createAddNodeButton',
      value: function _createAddNodeButton(locale) {
        var button = this._createButton('addNode', 'vis-button vis-add', locale['addNode'] || this.options.locales['en']['addNode']);
        this.manipulationDiv.appendChild(button);
        this._bindHammerToDiv(button, this.addNodeMode.bind(this));
      }
    }, {
      key: '_createAddEdgeButton',
      value: function _createAddEdgeButton(locale) {
        var button = this._createButton('addEdge', 'vis-button vis-connect', locale['addEdge'] || this.options.locales['en']['addEdge']);
        this.manipulationDiv.appendChild(button);
        this._bindHammerToDiv(button, this.addEdgeMode.bind(this));
      }
    }, {
      key: '_createEditNodeButton',
      value: function _createEditNodeButton(locale) {
        var button = this._createButton('editNode', 'vis-button vis-edit', locale['editNode'] || this.options.locales['en']['editNode']);
        this.manipulationDiv.appendChild(button);
        this._bindHammerToDiv(button, this.editNode.bind(this));
      }
    }, {
      key: '_createEditEdgeButton',
      value: function _createEditEdgeButton(locale) {
        var button = this._createButton('editEdge', 'vis-button vis-edit', locale['editEdge'] || this.options.locales['en']['editEdge']);
        this.manipulationDiv.appendChild(button);
        this._bindHammerToDiv(button, this.editEdgeMode.bind(this));
      }
    }, {
      key: '_createDeleteButton',
      value: function _createDeleteButton(locale) {
        var button = this._createButton('delete', 'vis-button vis-delete', locale['del'] || this.options.locales['en']['del']);
        this.manipulationDiv.appendChild(button);
        this._bindHammerToDiv(button, this.deleteSelected.bind(this));
      }
    }, {
      key: '_createBackButton',
      value: function _createBackButton(locale) {
        var button = this._createButton('back', 'vis-button vis-back', locale['back'] || this.options.locales['en']['back']);
        this.manipulationDiv.appendChild(button);
        this._bindHammerToDiv(button, this.showManipulatorToolbar.bind(this));
      }
    }, {
      key: '_createButton',
      value: function _createButton(id, className, label) {
        var labelClassName = arguments.length <= 3 || arguments[3] === undefined ? 'vis-label' : arguments[3];

        this.manipulationDOM[id + 'Div'] = document.createElement('div');
        this.manipulationDOM[id + 'Div'].className = className;
        this.manipulationDOM[id + 'Label'] = document.createElement('div');
        this.manipulationDOM[id + 'Label'].className = labelClassName;
        this.manipulationDOM[id + 'Label'].innerHTML = label;
        this.manipulationDOM[id + 'Div'].appendChild(this.manipulationDOM[id + 'Label']);
        return this.manipulationDOM[id + 'Div'];
      }
    }, {
      key: '_createDescription',
      value: function _createDescription(label) {
        this.manipulationDiv.appendChild(this._createButton('description', 'vis-button vis-none', label));
      }

      // -------------------------- End of DOM functions for buttons ------------------------------//

      /**
       * this binds an event until cleanup by the clean functions.
       * @param event
       * @param newFunction
       * @private
       */
    }, {
      key: '_temporaryBindEvent',
      value: function _temporaryBindEvent(event, newFunction) {
        this.temporaryEventFunctions.push({ event: event, boundFunction: newFunction });
        this.body.emitter.on(event, newFunction);
      }

      /**
       * this overrides an UI function until cleanup by the clean function
       * @param UIfunctionName
       * @param newFunction
       * @private
       */
    }, {
      key: '_temporaryBindUI',
      value: function _temporaryBindUI(UIfunctionName, newFunction) {
        if (this.body.eventListeners[UIfunctionName] !== undefined) {
          this.temporaryUIFunctions[UIfunctionName] = this.body.eventListeners[UIfunctionName];
          this.body.eventListeners[UIfunctionName] = newFunction;
        } else {
          throw new Error('This UI function does not exist. Typo? You tried: ' + UIfunctionName + ' possible are: ' + JSON.stringify(Object.keys(this.body.eventListeners)));
        }
      }

      /**
       * Restore the overridden UI functions to their original state.
       *
       * @private
       */
    }, {
      key: '_unbindTemporaryUIs',
      value: function _unbindTemporaryUIs() {
        for (var functionName in this.temporaryUIFunctions) {
          if (this.temporaryUIFunctions.hasOwnProperty(functionName)) {
            this.body.eventListeners[functionName] = this.temporaryUIFunctions[functionName];
            delete this.temporaryUIFunctions[functionName];
          }
        }
        this.temporaryUIFunctions = {};
      }

      /**
       * Unbind the events created by _temporaryBindEvent
       * @private
       */
    }, {
      key: '_unbindTemporaryEvents',
      value: function _unbindTemporaryEvents() {
        for (var i = 0; i < this.temporaryEventFunctions.length; i++) {
          var eventName = this.temporaryEventFunctions[i].event;
          var boundFunction = this.temporaryEventFunctions[i].boundFunction;
          this.body.emitter.off(eventName, boundFunction);
        }
        this.temporaryEventFunctions = [];
      }

      /**
       * Bind an hammer instance to a DOM element.
       * @param domElement
       * @param funct
       */
    }, {
      key: '_bindHammerToDiv',
      value: function _bindHammerToDiv(domElement, boundFunction) {
        var hammer = new Hammer(domElement, {});
        hammerUtil.onTouch(hammer, boundFunction);
        this.manipulationHammers.push(hammer);
      }

      /**
       * Neatly clean up temporary edges and nodes
       * @private
       */
    }, {
      key: '_cleanupTemporaryNodesAndEdges',
      value: function _cleanupTemporaryNodesAndEdges() {
        // _clean temporary edges
        for (var i = 0; i < this.temporaryIds.edges.length; i++) {
          this.body.edges[this.temporaryIds.edges[i]].disconnect();
          delete this.body.edges[this.temporaryIds.edges[i]];
          var indexTempEdge = this.body.edgeIndices.indexOf(this.temporaryIds.edges[i]);
          if (indexTempEdge !== -1) {
            this.body.edgeIndices.splice(indexTempEdge, 1);
          }
        }

        // _clean temporary nodes
        for (var i = 0; i < this.temporaryIds.nodes.length; i++) {
          delete this.body.nodes[this.temporaryIds.nodes[i]];
          var indexTempNode = this.body.nodeIndices.indexOf(this.temporaryIds.nodes[i]);
          if (indexTempNode !== -1) {
            this.body.nodeIndices.splice(indexTempNode, 1);
          }
        }

        this.temporaryIds = { nodes: [], edges: [] };
      }

      // ------------------------------------------ EDIT EDGE FUNCTIONS -----------------------------------------//

      /**
       * the touch is used to get the position of the initial click
       * @param event
       * @private
       */
    }, {
      key: '_controlNodeTouch',
      value: function _controlNodeTouch(event) {
        this.selectionHandler.unselectAll();
        this.lastTouch = this.body.functions.getPointer(event.center);
        this.lastTouch.translation = util.extend({}, this.body.view.translation); // copy the object
      }

      /**
       * the drag start is used to mark one of the control nodes as selected.
       * @param event
       * @private
       */
    }, {
      key: '_controlNodeDragStart',
      value: function _controlNodeDragStart(event) {
        var pointer = this.lastTouch;
        var pointerObj = this.selectionHandler._pointerToPositionObject(pointer);
        var from = this.body.nodes[this.temporaryIds.nodes[0]];
        var to = this.body.nodes[this.temporaryIds.nodes[1]];
        var edge = this.body.edges[this.edgeBeingEditedId];
        this.selectedControlNode = undefined;

        var fromSelect = from.isOverlappingWith(pointerObj);
        var toSelect = to.isOverlappingWith(pointerObj);

        if (fromSelect === true) {
          this.selectedControlNode = from;
          edge.edgeType.from = from;
        } else if (toSelect === true) {
          this.selectedControlNode = to;
          edge.edgeType.to = to;
        }

        this.body.emitter.emit('_redraw');
      }

      /**
       * dragging the control nodes or the canvas
       * @param event
       * @private
       */
    }, {
      key: '_controlNodeDrag',
      value: function _controlNodeDrag(event) {
        this.body.emitter.emit('disablePhysics');
        var pointer = this.body.functions.getPointer(event.center);
        var pos = this.canvas.DOMtoCanvas(pointer);

        if (this.selectedControlNode !== undefined) {
          this.selectedControlNode.x = pos.x;
          this.selectedControlNode.y = pos.y;
        } else {
          // if the drag was not started properly because the click started outside the network div, start it now.
          var diffX = pointer.x - this.lastTouch.x;
          var diffY = pointer.y - this.lastTouch.y;
          this.body.view.translation = { x: this.lastTouch.translation.x + diffX, y: this.lastTouch.translation.y + diffY };
        }
        this.body.emitter.emit('_redraw');
      }

      /**
       * connecting or restoring the control nodes.
       * @param event
       * @private
       */
    }, {
      key: '_controlNodeDragEnd',
      value: function _controlNodeDragEnd(event) {
        var pointer = this.body.functions.getPointer(event.center);
        var pointerObj = this.selectionHandler._pointerToPositionObject(pointer);
        var edge = this.body.edges[this.edgeBeingEditedId];

        // if the node that was dragged is not a control node, return
        if (this.selectedControlNode === undefined) {
          return;
        }

        var overlappingNodeIds = this.selectionHandler._getAllNodesOverlappingWith(pointerObj);
        var node = undefined;
        for (var i = overlappingNodeIds.length - 1; i >= 0; i--) {
          if (overlappingNodeIds[i] !== this.selectedControlNode.id) {
            node = this.body.nodes[overlappingNodeIds[i]];
            break;
          }
        }

        // perform the connection
        if (node !== undefined && this.selectedControlNode !== undefined) {
          if (node.isCluster === true) {
            alert(this.options.locales[this.options.locale]['createEdgeError'] || this.options.locales['en']['createEdgeError']);
          } else {
            var from = this.body.nodes[this.temporaryIds.nodes[0]];
            if (this.selectedControlNode.id === from.id) {
              this._performEditEdge(node.id, edge.to.id);
            } else {
              this._performEditEdge(edge.from.id, node.id);
            }
          }
        } else {
          edge.updateEdgeType();
          this.body.emitter.emit('restorePhysics');
        }
        this.body.emitter.emit('_redraw');
      }

      // ------------------------------------ END OF EDIT EDGE FUNCTIONS -----------------------------------------//

      // ------------------------------------------- ADD EDGE FUNCTIONS -----------------------------------------//
      /**
       * the function bound to the selection event. It checks if you want to connect a cluster and changes the description
       * to walk the user through the process.
       *
       * @private
       */
    }, {
      key: '_handleConnect',
      value: function _handleConnect(event) {
        // check to avoid double fireing of this function.
        if (new Date().valueOf() - this.touchTime > 100) {
          this.lastTouch = this.body.functions.getPointer(event.center);
          this.lastTouch.translation = util.extend({}, this.body.view.translation); // copy the object

          var pointer = this.lastTouch;
          var node = this.selectionHandler.getNodeAt(pointer);

          if (node !== undefined) {
            if (node.isCluster === true) {
              alert(this.options.locales[this.options.locale]['createEdgeError'] || this.options.locales['en']['createEdgeError']);
            } else {
              // create a node the temporary line can look at
              var targetNode = this._getNewTargetNode(node.x, node.y);
              this.body.nodes[targetNode.id] = targetNode;
              this.body.nodeIndices.push(targetNode.id);

              // create a temporary edge
              var connectionEdge = this.body.functions.createEdge({
                id: 'connectionEdge' + util.randomUUID(),
                from: node.id,
                to: targetNode.id,
                physics: false,
                smooth: {
                  enabled: true,
                  type: 'continuous',
                  roundness: 0.5
                }
              });
              this.body.edges[connectionEdge.id] = connectionEdge;
              this.body.edgeIndices.push(connectionEdge.id);

              this.temporaryIds.nodes.push(targetNode.id);
              this.temporaryIds.edges.push(connectionEdge.id);
            }
          }
          this.touchTime = new Date().valueOf();
        }
      }
    }, {
      key: '_dragControlNode',
      value: function _dragControlNode(event) {
        var pointer = this.body.functions.getPointer(event.center);
        if (this.temporaryIds.nodes[0] !== undefined) {
          var targetNode = this.body.nodes[this.temporaryIds.nodes[0]]; // there is only one temp node in the add edge mode.
          targetNode.x = this.canvas._XconvertDOMtoCanvas(pointer.x);
          targetNode.y = this.canvas._YconvertDOMtoCanvas(pointer.y);
          this.body.emitter.emit('_redraw');
        } else {
          var diffX = pointer.x - this.lastTouch.x;
          var diffY = pointer.y - this.lastTouch.y;
          this.body.view.translation = { x: this.lastTouch.translation.x + diffX, y: this.lastTouch.translation.y + diffY };
        }
      }

      /**
       * Connect the new edge to the target if one exists, otherwise remove temp line
       * @param event
       * @private
       */
    }, {
      key: '_finishConnect',
      value: function _finishConnect(event) {
        var pointer = this.body.functions.getPointer(event.center);
        var pointerObj = this.selectionHandler._pointerToPositionObject(pointer);

        // remember the edge id
        var connectFromId = undefined;
        if (this.temporaryIds.edges[0] !== undefined) {
          connectFromId = this.body.edges[this.temporaryIds.edges[0]].fromId;
        }

        // get the overlapping node but NOT the temporary node;
        var overlappingNodeIds = this.selectionHandler._getAllNodesOverlappingWith(pointerObj);
        var node = undefined;
        for (var i = overlappingNodeIds.length - 1; i >= 0; i--) {
          // if the node id is NOT a temporary node, accept the node.
          if (this.temporaryIds.nodes.indexOf(overlappingNodeIds[i]) === -1) {
            node = this.body.nodes[overlappingNodeIds[i]];
            break;
          }
        }

        // clean temporary nodes and edges.
        this._cleanupTemporaryNodesAndEdges();

        // perform the connection
        if (node !== undefined) {
          if (node.isCluster === true) {
            alert(this.options.locales[this.options.locale]['createEdgeError'] || this.options.locales['en']['createEdgeError']);
          } else {
            if (this.body.nodes[connectFromId] !== undefined && this.body.nodes[node.id] !== undefined) {
              this._performAddEdge(connectFromId, node.id);
            }
          }
        }
        this.body.emitter.emit('_redraw');
      }

      // --------------------------------------- END OF ADD EDGE FUNCTIONS -------------------------------------//

      // ------------------------------ Performing all the actual data manipulation ------------------------//

      /**
       * Adds a node on the specified location
       */
    }, {
      key: '_performAddNode',
      value: function _performAddNode(clickData) {
        var _this5 = this;

        var defaultData = {
          id: util.randomUUID(),
          x: clickData.pointer.canvas.x,
          y: clickData.pointer.canvas.y,
          label: 'new'
        };

        if (typeof this.options.addNode === 'function') {
          if (this.options.addNode.length === 2) {
            this.options.addNode(defaultData, function (finalizedData) {
              if (finalizedData !== null && finalizedData !== undefined && _this5.inMode === 'addNode') {
                // if for whatever reason the mode has changes (due to dataset change) disregard the callback
                _this5.body.data.nodes.getDataSet().add(finalizedData);
                _this5.showManipulatorToolbar();
              }
            });
          } else {
            throw new Error('The function for add does not support two arguments (data,callback)');
            this.showManipulatorToolbar();
          }
        } else {
          this.body.data.nodes.getDataSet().add(defaultData);
          this.showManipulatorToolbar();
        }
      }

      /**
       * connect two nodes with a new edge.
       *
       * @private
       */
    }, {
      key: '_performAddEdge',
      value: function _performAddEdge(sourceNodeId, targetNodeId) {
        var _this6 = this;

        var defaultData = { from: sourceNodeId, to: targetNodeId };
        if (typeof this.options.addEdge === 'function') {
          if (this.options.addEdge.length === 2) {
            this.options.addEdge(defaultData, function (finalizedData) {
              if (finalizedData !== null && finalizedData !== undefined && _this6.inMode === 'addEdge') {
                // if for whatever reason the mode has changes (due to dataset change) disregard the callback
                _this6.body.data.edges.getDataSet().add(finalizedData);
                _this6.selectionHandler.unselectAll();
                _this6.showManipulatorToolbar();
              }
            });
          } else {
            throw new Error('The function for connect does not support two arguments (data,callback)');
          }
        } else {
          this.body.data.edges.getDataSet().add(defaultData);
          this.selectionHandler.unselectAll();
          this.showManipulatorToolbar();
        }
      }

      /**
       * connect two nodes with a new edge.
       *
       * @private
       */
    }, {
      key: '_performEditEdge',
      value: function _performEditEdge(sourceNodeId, targetNodeId) {
        var _this7 = this;

        var defaultData = { id: this.edgeBeingEditedId, from: sourceNodeId, to: targetNodeId };
        if (typeof this.options.editEdge === 'function') {
          if (this.options.editEdge.length === 2) {
            this.options.editEdge(defaultData, function (finalizedData) {
              if (finalizedData === null || finalizedData === undefined || _this7.inMode !== 'editEdge') {
                // if for whatever reason the mode has changes (due to dataset change) disregard the callback) {
                _this7.body.edges[defaultData.id].updateEdgeType();
                _this7.body.emitter.emit('_redraw');
              } else {
                _this7.body.data.edges.getDataSet().update(finalizedData);
                _this7.selectionHandler.unselectAll();
                _this7.showManipulatorToolbar();
              }
            });
          } else {
            throw new Error('The function for edit does not support two arguments (data, callback)');
          }
        } else {
          this.body.data.edges.getDataSet().update(defaultData);
          this.selectionHandler.unselectAll();
          this.showManipulatorToolbar();
        }
      }
    }]);

    return ManipulationSystem;
  })();

  exports['default'] = ManipulationSystem;
  module.exports = exports['default'];

/***/ },
/* 110 */
/***/ function(module, exports) {

  /**
   * This object contains all possible options. It will check if the types are correct, if required if the option is one
   * of the allowed values.
   *
   * __any__ means that the name of the property does not matter.
   * __type__ is a required field for all objects and contains the allowed types of all objects
   */
  'use strict';

  Object.defineProperty(exports, '__esModule', {
    value: true
  });
  var string = 'string';
  var boolean = 'boolean';
  var number = 'number';
  var array = 'array';
  var object = 'object'; // should only be in a __type__ property
  var dom = 'dom';
  var any = 'any';

  var allOptions = {
    configure: {
      enabled: { boolean: boolean },
      filter: { boolean: boolean, string: string, array: array, 'function': 'function' },
      container: { dom: dom },
      showButton: { boolean: boolean },
      __type__: { object: object, boolean: boolean, string: string, array: array, 'function': 'function' }
    },
    edges: {
      arrows: {
        to: { enabled: { boolean: boolean }, scaleFactor: { number: number }, __type__: { object: object, boolean: boolean } },
        middle: { enabled: { boolean: boolean }, scaleFactor: { number: number }, __type__: { object: object, boolean: boolean } },
        from: { enabled: { boolean: boolean }, scaleFactor: { number: number }, __type__: { object: object, boolean: boolean } },
        __type__: { string: ['from', 'to', 'middle'], object: object }
      },
      arrowStrikethrough: { boolean: boolean },
      color: {
        color: { string: string },
        highlight: { string: string },
        hover: { string: string },
        inherit: { string: ['from', 'to', 'both'], boolean: boolean },
        opacity: { number: number },
        __type__: { object: object, string: string }
      },
      dashes: { boolean: boolean, array: array },
      font: {
        color: { string: string },
        size: { number: number }, // px
        face: { string: string },
        background: { string: string },
        strokeWidth: { number: number }, // px
        strokeColor: { string: string },
        align: { string: ['horizontal', 'top', 'middle', 'bottom'] },
        __type__: { object: object, string: string }
      },
      hidden: { boolean: boolean },
      hoverWidth: { 'function': 'function', number: number },
      label: { string: string, 'undefined': 'undefined' },
      labelHighlightBold: { boolean: boolean },
      length: { number: number, 'undefined': 'undefined' },
      physics: { boolean: boolean },
      scaling: {
        min: { number: number },
        max: { number: number },
        label: {
          enabled: { boolean: boolean },
          min: { number: number },
          max: { number: number },
          maxVisible: { number: number },
          drawThreshold: { number: number },
          __type__: { object: object, boolean: boolean }
        },
        customScalingFunction: { 'function': 'function' },
        __type__: { object: object }
      },
      selectionWidth: { 'function': 'function', number: number },
      selfReferenceSize: { number: number },
      shadow: {
        enabled: { boolean: boolean },
        color: { string: string },
        size: { number: number },
        x: { number: number },
        y: { number: number },
        __type__: { object: object, boolean: boolean }
      },
      smooth: {
        enabled: { boolean: boolean },
        type: { string: ['dynamic', 'continuous', 'discrete', 'diagonalCross', 'straightCross', 'horizontal', 'vertical', 'curvedCW', 'curvedCCW', 'cubicBezier'] },
        roundness: { number: number },
        forceDirection: { string: ['horizontal', 'vertical', 'none'], boolean: boolean },
        __type__: { object: object, boolean: boolean }
      },
      title: { string: string, 'undefined': 'undefined' },
      width: { number: number },
      value: { number: number, 'undefined': 'undefined' },
      __type__: { object: object }
    },
    groups: {
      useDefaultGroups: { boolean: boolean },
      __any__: 'get from nodes, will be overwritten below',
      __type__: { object: object }
    },
    interaction: {
      dragNodes: { boolean: boolean },
      dragView: { boolean: boolean },
      hideEdgesOnDrag: { boolean: boolean },
      hideNodesOnDrag: { boolean: boolean },
      hover: { boolean: boolean },
      keyboard: {
        enabled: { boolean: boolean },
        speed: { x: { number: number }, y: { number: number }, zoom: { number: number }, __type__: { object: object } },
        bindToWindow: { boolean: boolean },
        __type__: { object: object, boolean: boolean }
      },
      multiselect: { boolean: boolean },
      navigationButtons: { boolean: boolean },
      selectable: { boolean: boolean },
      selectConnectedEdges: { boolean: boolean },
      hoverConnectedEdges: { boolean: boolean },
      tooltipDelay: { number: number },
      zoomView: { boolean: boolean },
      __type__: { object: object }
    },
    layout: {
      randomSeed: { 'undefined': 'undefined', number: number },
      improvedLayout: { boolean: boolean },
      hierarchical: {
        enabled: { boolean: boolean },
        levelSeparation: { number: number },
        nodeSpacing: { number: number },
        treeSpacing: { number: number },
        blockShifting: { boolean: boolean },
        edgeMinimization: { boolean: boolean },
        direction: { string: ['UD', 'DU', 'LR', 'RL'] }, // UD, DU, LR, RL
        sortMethod: { string: ['hubsize', 'directed'] }, // hubsize, directed
        __type__: { object: object, boolean: boolean }
      },
      __type__: { object: object }
    },
    manipulation: {
      enabled: { boolean: boolean },
      initiallyActive: { boolean: boolean },
      addNode: { boolean: boolean, 'function': 'function' },
      addEdge: { boolean: boolean, 'function': 'function' },
      editNode: { 'function': 'function' },
      editEdge: { boolean: boolean, 'function': 'function' },
      deleteNode: { boolean: boolean, 'function': 'function' },
      deleteEdge: { boolean: boolean, 'function': 'function' },
      controlNodeStyle: 'get from nodes, will be overwritten below',
      __type__: { object: object, boolean: boolean }
    },
    nodes: {
      borderWidth: { number: number },
      borderWidthSelected: { number: number, 'undefined': 'undefined' },
      brokenImage: { string: string, 'undefined': 'undefined' },
      color: {
        border: { string: string },
        background: { string: string },
        highlight: {
          border: { string: string },
          background: { string: string },
          __type__: { object: object, string: string }
        },
        hover: {
          border: { string: string },
          background: { string: string },
          __type__: { object: object, string: string }
        },
        __type__: { object: object, string: string }
      },
      fixed: {
        x: { boolean: boolean },
        y: { boolean: boolean },
        __type__: { object: object, boolean: boolean }
      },
      font: {
        color: { string: string },
        size: { number: number }, // px
        face: { string: string },
        background: { string: string },
        strokeWidth: { number: number }, // px
        strokeColor: { string: string },
        __type__: { object: object, string: string }
      },
      group: { string: string, number: number, 'undefined': 'undefined' },
      hidden: { boolean: boolean },
      icon: {
        face: { string: string },
        code: { string: string }, //'\uf007',
        size: { number: number }, //50,
        color: { string: string },
        __type__: { object: object }
      },
      id: { string: string, number: number },
      image: { string: string, 'undefined': 'undefined' }, // --> URL
      label: { string: string, 'undefined': 'undefined' },
      labelHighlightBold: { boolean: boolean },
      level: { number: number, 'undefined': 'undefined' },
      mass: { number: number },
      physics: { boolean: boolean },
      scaling: {
        min: { number: number },
        max: { number: number },
        label: {
          enabled: { boolean: boolean },
          min: { number: number },
          max: { number: number },
          maxVisible: { number: number },
          drawThreshold: { number: number },
          __type__: { object: object, boolean: boolean }
        },
        customScalingFunction: { 'function': 'function' },
        __type__: { object: object }
      },
      shadow: {
        enabled: { boolean: boolean },
        color: { string: string },
        size: { number: number },
        x: { number: number },
        y: { number: number },
        __type__: { object: object, boolean: boolean }
      },
      shape: { string: ['ellipse', 'circle', 'database', 'box', 'text', 'image', 'circularImage', 'diamond', 'dot', 'star', 'triangle', 'triangleDown', 'square', 'icon'] },
      shapeProperties: {
        borderDashes: { boolean: boolean, array: array },
        borderRadius: { number: number },
        useImageSize: { boolean: boolean },
        useBorderWithImage: { boolean: boolean },
        __type__: { object: object }
      },
      size: { number: number },
      title: { string: string, 'undefined': 'undefined' },
      value: { number: number, 'undefined': 'undefined' },
      x: { number: number },
      y: { number: number },
      __type__: { object: object }
    },
    physics: {
      enabled: { boolean: boolean },
      barnesHut: {
        gravitationalConstant: { number: number },
        centralGravity: { number: number },
        springLength: { number: number },
        springConstant: { number: number },
        damping: { number: number },
        avoidOverlap: { number: number },
        __type__: { object: object }
      },
      forceAtlas2Based: {
        gravitationalConstant: { number: number },
        centralGravity: { number: number },
        springLength: { number: number },
        springConstant: { number: number },
        damping: { number: number },
        avoidOverlap: { number: number },
        __type__: { object: object }
      },
      repulsion: {
        centralGravity: { number: number },
        springLength: { number: number },
        springConstant: { number: number },
        nodeDistance: { number: number },
        damping: { number: number },
        __type__: { object: object }
      },
      hierarchicalRepulsion: {
        centralGravity: { number: number },
        springLength: { number: number },
        springConstant: { number: number },
        nodeDistance: { number: number },
        damping: { number: number },
        __type__: { object: object }
      },
      maxVelocity: { number: number },
      minVelocity: { number: number }, // px/s
      solver: { string: ['barnesHut', 'repulsion', 'hierarchicalRepulsion', 'forceAtlas2Based'] },
      stabilization: {
        enabled: { boolean: boolean },
        iterations: { number: number }, // maximum number of iteration to stabilize
        updateInterval: { number: number },
        onlyDynamicEdges: { boolean: boolean },
        fit: { boolean: boolean },
        __type__: { object: object, boolean: boolean }
      },
      timestep: { number: number },
      adaptiveTimestep: { boolean: boolean },
      __type__: { object: object, boolean: boolean }
    },

    //globals :
    autoResize: { boolean: boolean },
    clickToUse: { boolean: boolean },
    locale: { string: string },
    locales: {
      __any__: { any: any },
      __type__: { object: object }
    },
    height: { string: string },
    width: { string: string },
    __type__: { object: object }
  };

  allOptions.groups.__any__ = allOptions.nodes;
  allOptions.manipulation.controlNodeStyle = allOptions.nodes;

  var configureOptions = {
    nodes: {
      borderWidth: [1, 0, 10, 1],
      borderWidthSelected: [2, 0, 10, 1],
      color: {
        border: ['color', '#2B7CE9'],
        background: ['color', '#97C2FC'],
        highlight: {
          border: ['color', '#2B7CE9'],
          background: ['color', '#D2E5FF']
        },
        hover: {
          border: ['color', '#2B7CE9'],
          background: ['color', '#D2E5FF']
        }
      },
      fixed: {
        x: false,
        y: false
      },
      font: {
        color: ['color', '#343434'],
        size: [14, 0, 100, 1], // px
        face: ['arial', 'verdana', 'tahoma'],
        background: ['color', 'none'],
        strokeWidth: [0, 0, 50, 1], // px
        strokeColor: ['color', '#ffffff']
      },
      //group: 'string',
      hidden: false,
      labelHighlightBold: true,
      //icon: {
      //  face: 'string',  //'FontAwesome',
      //  code: 'string',  //'\uf007',
      //  size: [50, 0, 200, 1],  //50,
      //  color: ['color','#2B7CE9']   //'#aa00ff'
      //},
      //image: 'string', // --> URL
      physics: true,
      scaling: {
        min: [10, 0, 200, 1],
        max: [30, 0, 200, 1],
        label: {
          enabled: false,
          min: [14, 0, 200, 1],
          max: [30, 0, 200, 1],
          maxVisible: [30, 0, 200, 1],
          drawThreshold: [5, 0, 20, 1]
        }
      },
      shadow: {
        enabled: false,
        color: 'rgba(0,0,0,0.5)',
        size: [10, 0, 20, 1],
        x: [5, -30, 30, 1],
        y: [5, -30, 30, 1]
      },
      shape: ['ellipse', 'box', 'circle', 'database', 'diamond', 'dot', 'square', 'star', 'text', 'triangle', 'triangleDown'],
      shapeProperties: {
        borderDashes: false,
        borderRadius: [6, 0, 20, 1],
        useImageSize: false
      },
      size: [25, 0, 200, 1]
    },
    edges: {
      arrows: {
        to: { enabled: false, scaleFactor: [1, 0, 3, 0.05] }, // boolean / {arrowScaleFactor:1} / {enabled: false, arrowScaleFactor:1}
        middle: { enabled: false, scaleFactor: [1, 0, 3, 0.05] },
        from: { enabled: false, scaleFactor: [1, 0, 3, 0.05] }
      },
      arrowStrikethrough: true,
      color: {
        color: ['color', '#848484'],
        highlight: ['color', '#848484'],
        hover: ['color', '#848484'],
        inherit: ['from', 'to', 'both', true, false],
        opacity: [1, 0, 1, 0.05]
      },
      dashes: false,
      font: {
        color: ['color', '#343434'],
        size: [14, 0, 100, 1], // px
        face: ['arial', 'verdana', 'tahoma'],
        background: ['color', 'none'],
        strokeWidth: [2, 0, 50, 1], // px
        strokeColor: ['color', '#ffffff'],
        align: ['horizontal', 'top', 'middle', 'bottom']
      },
      hidden: false,
      hoverWidth: [1.5, 0, 5, 0.1],
      labelHighlightBold: true,
      physics: true,
      scaling: {
        min: [1, 0, 100, 1],
        max: [15, 0, 100, 1],
        label: {
          enabled: true,
          min: [14, 0, 200, 1],
          max: [30, 0, 200, 1],
          maxVisible: [30, 0, 200, 1],
          drawThreshold: [5, 0, 20, 1]
        }
      },
      selectionWidth: [1.5, 0, 5, 0.1],
      selfReferenceSize: [20, 0, 200, 1],
      shadow: {
        enabled: false,
        color: 'rgba(0,0,0,0.5)',
        size: [10, 0, 20, 1],
        x: [5, -30, 30, 1],
        y: [5, -30, 30, 1]
      },
      smooth: {
        enabled: true,
        type: ['dynamic', 'continuous', 'discrete', 'diagonalCross', 'straightCross', 'horizontal', 'vertical', 'curvedCW', 'curvedCCW', 'cubicBezier'],
        forceDirection: ['horizontal', 'vertical', 'none'],
        roundness: [0.5, 0, 1, 0.05]
      },
      width: [1, 0, 30, 1]
    },
    layout: {
      //randomSeed: [0, 0, 500, 1],
      //improvedLayout: true,
      hierarchical: {
        enabled: false,
        levelSeparation: [150, 20, 500, 5],
        nodeSpacing: [100, 20, 500, 5],
        treeSpacing: [200, 20, 500, 5],
        blockShifting: true,
        edgeMinimization: true,
        direction: ['UD', 'DU', 'LR', 'RL'], // UD, DU, LR, RL
        sortMethod: ['hubsize', 'directed'] // hubsize, directed
      }
    },
    interaction: {
      dragNodes: true,
      dragView: true,
      hideEdgesOnDrag: false,
      hideNodesOnDrag: false,
      hover: false,
      keyboard: {
        enabled: false,
        speed: { x: [10, 0, 40, 1], y: [10, 0, 40, 1], zoom: [0.02, 0, 0.1, 0.005] },
        bindToWindow: true
      },
      multiselect: false,
      navigationButtons: false,
      selectable: true,
      selectConnectedEdges: true,
      hoverConnectedEdges: true,
      tooltipDelay: [300, 0, 1000, 25],
      zoomView: true
    },
    manipulation: {
      enabled: false,
      initiallyActive: false
    },
    physics: {
      enabled: true,
      barnesHut: {
        //theta: [0.5, 0.1, 1, 0.05],
        gravitationalConstant: [-2000, -30000, 0, 50],
        centralGravity: [0.3, 0, 10, 0.05],
        springLength: [95, 0, 500, 5],
        springConstant: [0.04, 0, 1.2, 0.005],
        damping: [0.09, 0, 1, 0.01],
        avoidOverlap: [0, 0, 1, 0.01]
      },
      forceAtlas2Based: {
        //theta: [0.5, 0.1, 1, 0.05],
        gravitationalConstant: [-50, -500, 0, 1],
        centralGravity: [0.01, 0, 1, 0.005],
        springLength: [95, 0, 500, 5],
        springConstant: [0.08, 0, 1.2, 0.005],
        damping: [0.4, 0, 1, 0.01],
        avoidOverlap: [0, 0, 1, 0.01]
      },
      repulsion: {
        centralGravity: [0.2, 0, 10, 0.05],
        springLength: [200, 0, 500, 5],
        springConstant: [0.05, 0, 1.2, 0.005],
        nodeDistance: [100, 0, 500, 5],
        damping: [0.09, 0, 1, 0.01]
      },
      hierarchicalRepulsion: {
        centralGravity: [0.2, 0, 10, 0.05],
        springLength: [100, 0, 500, 5],
        springConstant: [0.01, 0, 1.2, 0.005],
        nodeDistance: [120, 0, 500, 5],
        damping: [0.09, 0, 1, 0.01]
      },
      maxVelocity: [50, 0, 150, 1],
      minVelocity: [0.1, 0.01, 0.5, 0.01],
      solver: ['barnesHut', 'forceAtlas2Based', 'repulsion', 'hierarchicalRepulsion'],
      timestep: [0.5, 0.01, 1, 0.01]
    },
    //adaptiveTimestep: true
    global: {
      locale: ['en', 'nl']
    }
  };

  exports.allOptions = allOptions;
  exports.configureOptions = configureOptions;

/***/ },
/* 111 */
/***/ function(module, exports, __webpack_require__) {

  // distance finding algorithm
  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; })();

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var _componentsAlgorithmsFloydWarshallJs = __webpack_require__(112);

  var _componentsAlgorithmsFloydWarshallJs2 = _interopRequireDefault(_componentsAlgorithmsFloydWarshallJs);

  /**
   * KamadaKawai positions the nodes initially based on
   *
   * "AN ALGORITHM FOR DRAWING GENERAL UNDIRECTED GRAPHS"
   * -- Tomihisa KAMADA and Satoru KAWAI in 1989
   *
   * Possible optimizations in the distance calculation can be implemented.
   */

  var KamadaKawai = (function () {
    function KamadaKawai(body, edgeLength, edgeStrength) {
      _classCallCheck(this, KamadaKawai);

      this.body = body;
      this.springLength = edgeLength;
      this.springConstant = edgeStrength;
      this.distanceSolver = new _componentsAlgorithmsFloydWarshallJs2["default"]();
    }

    /**
     * Not sure if needed but can be used to update the spring length and spring constant
     * @param options
     */

    _createClass(KamadaKawai, [{
      key: "setOptions",
      value: function setOptions(options) {
        if (options) {
          if (options.springLength) {
            this.springLength = options.springLength;
          }
          if (options.springConstant) {
            this.springConstant = options.springConstant;
          }
        }
      }

      /**
       * Position the system
       * @param nodesArray
       * @param edgesArray
       */
    }, {
      key: "solve",
      value: function solve(nodesArray, edgesArray) {
        var ignoreClusters = arguments.length <= 2 || arguments[2] === undefined ? false : arguments[2];

        // get distance matrix
        var D_matrix = this.distanceSolver.getDistances(this.body, nodesArray, edgesArray); // distance matrix

        // get the L Matrix
        this._createL_matrix(D_matrix);

        // get the K Matrix
        this._createK_matrix(D_matrix);

        // calculate positions
        var threshold = 0.01;
        var innerThreshold = 1;
        var iterations = 0;
        var maxIterations = Math.max(1000, Math.min(10 * this.body.nodeIndices.length, 6000));
        var maxInnerIterations = 5;

        var maxEnergy = 1e9;
        var highE_nodeId = 0,
            dE_dx = 0,
            dE_dy = 0,
            delta_m = 0,
            subIterations = 0;

        while (maxEnergy > threshold && iterations < maxIterations) {
          iterations += 1;

          var _getHighestEnergyNode2 = this._getHighestEnergyNode(ignoreClusters);

          var _getHighestEnergyNode22 = _slicedToArray(_getHighestEnergyNode2, 4);

          highE_nodeId = _getHighestEnergyNode22[0];
          maxEnergy = _getHighestEnergyNode22[1];
          dE_dx = _getHighestEnergyNode22[2];
          dE_dy = _getHighestEnergyNode22[3];

          delta_m = maxEnergy;
          subIterations = 0;
          while (delta_m > innerThreshold && subIterations < maxInnerIterations) {
            subIterations += 1;
            this._moveNode(highE_nodeId, dE_dx, dE_dy);

            var _getEnergy2 = this._getEnergy(highE_nodeId);

            var _getEnergy22 = _slicedToArray(_getEnergy2, 3);

            delta_m = _getEnergy22[0];
            dE_dx = _getEnergy22[1];
            dE_dy = _getEnergy22[2];
          }
        }
      }

      /**
       * get the node with the highest energy
       * @returns {*[]}
       * @private
       */
    }, {
      key: "_getHighestEnergyNode",
      value: function _getHighestEnergyNode(ignoreClusters) {
        var nodesArray = this.body.nodeIndices;
        var nodes = this.body.nodes;
        var maxEnergy = 0;
        var maxEnergyNodeId = nodesArray[0];
        var dE_dx_max = 0,
            dE_dy_max = 0;

        for (var nodeIdx = 0; nodeIdx < nodesArray.length; nodeIdx++) {
          var m = nodesArray[nodeIdx];
          // by not evaluating nodes with predefined positions we should only move nodes that have no positions.
          if (nodes[m].predefinedPosition === false || nodes[m].isCluster === true && ignoreClusters === true || nodes[m].options.fixed.x === true || nodes[m].options.fixed.y === true) {
            var _getEnergy3 = this._getEnergy(m);

            var _getEnergy32 = _slicedToArray(_getEnergy3, 3);

            var delta_m = _getEnergy32[0];
            var dE_dx = _getEnergy32[1];
            var dE_dy = _getEnergy32[2];

            if (maxEnergy < delta_m) {
              maxEnergy = delta_m;
              maxEnergyNodeId = m;
              dE_dx_max = dE_dx;
              dE_dy_max = dE_dy;
            }
          }
        }

        return [maxEnergyNodeId, maxEnergy, dE_dx_max, dE_dy_max];
      }

      /**
       * calculate the energy of a single node
       * @param m
       * @returns {*[]}
       * @private
       */
    }, {
      key: "_getEnergy",
      value: function _getEnergy(m) {
        var nodesArray = this.body.nodeIndices;
        var nodes = this.body.nodes;

        var x_m = nodes[m].x;
        var y_m = nodes[m].y;
        var dE_dx = 0;
        var dE_dy = 0;
        for (var iIdx = 0; iIdx < nodesArray.length; iIdx++) {
          var i = nodesArray[iIdx];
          if (i !== m) {
            var x_i = nodes[i].x;
            var y_i = nodes[i].y;
            var denominator = 1.0 / Math.sqrt(Math.pow(x_m - x_i, 2) + Math.pow(y_m - y_i, 2));
            dE_dx += this.K_matrix[m][i] * (x_m - x_i - this.L_matrix[m][i] * (x_m - x_i) * denominator);
            dE_dy += this.K_matrix[m][i] * (y_m - y_i - this.L_matrix[m][i] * (y_m - y_i) * denominator);
          }
        }

        var delta_m = Math.sqrt(Math.pow(dE_dx, 2) + Math.pow(dE_dy, 2));
        return [delta_m, dE_dx, dE_dy];
      }

      /**
       * move the node based on it's energy
       * the dx and dy are calculated from the linear system proposed by Kamada and Kawai
       * @param m
       * @param dE_dx
       * @param dE_dy
       * @private
       */
    }, {
      key: "_moveNode",
      value: function _moveNode(m, dE_dx, dE_dy) {
        var nodesArray = this.body.nodeIndices;
        var nodes = this.body.nodes;
        var d2E_dx2 = 0;
        var d2E_dxdy = 0;
        var d2E_dy2 = 0;

        var x_m = nodes[m].x;
        var y_m = nodes[m].y;
        for (var iIdx = 0; iIdx < nodesArray.length; iIdx++) {
          var i = nodesArray[iIdx];
          if (i !== m) {
            var x_i = nodes[i].x;
            var y_i = nodes[i].y;
            var denominator = 1.0 / Math.pow(Math.pow(x_m - x_i, 2) + Math.pow(y_m - y_i, 2), 1.5);
            d2E_dx2 += this.K_matrix[m][i] * (1 - this.L_matrix[m][i] * Math.pow(y_m - y_i, 2) * denominator);
            d2E_dxdy += this.K_matrix[m][i] * (this.L_matrix[m][i] * (x_m - x_i) * (y_m - y_i) * denominator);
            d2E_dy2 += this.K_matrix[m][i] * (1 - this.L_matrix[m][i] * Math.pow(x_m - x_i, 2) * denominator);
          }
        }
        // make the variable names easier to make the solving of the linear system easier to read
        var A = d2E_dx2,
            B = d2E_dxdy,
            C = dE_dx,
            D = d2E_dy2,
            E = dE_dy;

        // solve the linear system for dx and dy
        var dy = (C / A + E / B) / (B / A - D / B);
        var dx = -(B * dy + C) / A;

        // move the node
        nodes[m].x += dx;
        nodes[m].y += dy;
      }

      /**
       * Create the L matrix: edge length times shortest path
       * @param D_matrix
       * @private
       */
    }, {
      key: "_createL_matrix",
      value: function _createL_matrix(D_matrix) {
        var nodesArray = this.body.nodeIndices;
        var edgeLength = this.springLength;

        this.L_matrix = [];
        for (var i = 0; i < nodesArray.length; i++) {
          this.L_matrix[nodesArray[i]] = {};
          for (var j = 0; j < nodesArray.length; j++) {
            this.L_matrix[nodesArray[i]][nodesArray[j]] = edgeLength * D_matrix[nodesArray[i]][nodesArray[j]];
          }
        }
      }

      /**
       * Create the K matrix: spring constants times shortest path
       * @param D_matrix
       * @private
       */
    }, {
      key: "_createK_matrix",
      value: function _createK_matrix(D_matrix) {
        var nodesArray = this.body.nodeIndices;
        var edgeStrength = this.springConstant;

        this.K_matrix = [];
        for (var i = 0; i < nodesArray.length; i++) {
          this.K_matrix[nodesArray[i]] = {};
          for (var j = 0; j < nodesArray.length; j++) {
            this.K_matrix[nodesArray[i]][nodesArray[j]] = edgeStrength * Math.pow(D_matrix[nodesArray[i]][nodesArray[j]], -2);
          }
        }
      }
    }]);

    return KamadaKawai;
  })();

  exports["default"] = KamadaKawai;
  module.exports = exports["default"];

/***/ },
/* 112 */
/***/ function(module, exports) {

  /**
   * Created by Alex on 10-Aug-15.
   */

  "use strict";

  Object.defineProperty(exports, "__esModule", {
    value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var FloydWarshall = (function () {
    function FloydWarshall() {
      _classCallCheck(this, FloydWarshall);
    }

    _createClass(FloydWarshall, [{
      key: "getDistances",
      value: function getDistances(body, nodesArray, edgesArray) {
        var D_matrix = {};
        var edges = body.edges;

        // prepare matrix with large numbers
        for (var i = 0; i < nodesArray.length; i++) {
          D_matrix[nodesArray[i]] = {};
          D_matrix[nodesArray[i]] = {};
          for (var j = 0; j < nodesArray.length; j++) {
            D_matrix[nodesArray[i]][nodesArray[j]] = i == j ? 0 : 1e9;
            D_matrix[nodesArray[i]][nodesArray[j]] = i == j ? 0 : 1e9;
          }
        }

        // put the weights for the edges in. This assumes unidirectionality.
        for (var i = 0; i < edgesArray.length; i++) {
          var edge = edges[edgesArray[i]];
          // edge has to be connected if it counts to the distances. If it is connected to inner clusters it will crash so we also check if it is in the D_matrix
          if (edge.connected === true && D_matrix[edge.fromId] !== undefined && D_matrix[edge.toId] !== undefined) {
            D_matrix[edge.fromId][edge.toId] = 1;
            D_matrix[edge.toId][edge.fromId] = 1;
          }
        }

        var nodeCount = nodesArray.length;

        // Adapted FloydWarshall based on unidirectionality to greatly reduce complexity.
        for (var k = 0; k < nodeCount; k++) {
          for (var i = 0; i < nodeCount - 1; i++) {
            for (var j = i + 1; j < nodeCount; j++) {
              D_matrix[nodesArray[i]][nodesArray[j]] = Math.min(D_matrix[nodesArray[i]][nodesArray[j]], D_matrix[nodesArray[i]][nodesArray[k]] + D_matrix[nodesArray[k]][nodesArray[j]]);
              D_matrix[nodesArray[j]][nodesArray[i]] = D_matrix[nodesArray[i]][nodesArray[j]];
            }
          }
        }

        return D_matrix;
      }
    }]);

    return FloydWarshall;
  })();

  exports["default"] = FloydWarshall;
  module.exports = exports["default"];

/***/ },
/* 113 */
/***/ function(module, exports) {

  /**
   * Canvas shapes used by Network
   */
  'use strict';

  if (typeof CanvasRenderingContext2D !== 'undefined') {

    /**
     * Draw a circle shape
     */
    CanvasRenderingContext2D.prototype.circle = function (x, y, r) {
      this.beginPath();
      this.arc(x, y, r, 0, 2 * Math.PI, false);
      this.closePath();
    };

    /**
     * Draw a square shape
     * @param {Number} x horizontal center
     * @param {Number} y vertical center
     * @param {Number} r   size, width and height of the square
     */
    CanvasRenderingContext2D.prototype.square = function (x, y, r) {
      this.beginPath();
      this.rect(x - r, y - r, r * 2, r * 2);
      this.closePath();
    };

    /**
     * Draw a triangle shape
     * @param {Number} x horizontal center
     * @param {Number} y vertical center
     * @param {Number} r   radius, half the length of the sides of the triangle
     */
    CanvasRenderingContext2D.prototype.triangle = function (x, y, r) {
      // http://en.wikipedia.org/wiki/Equilateral_triangle
      this.beginPath();

      // the change in radius and the offset is here to center the shape
      r *= 1.15;
      y += 0.275 * r;

      var s = r * 2;
      var s2 = s / 2;
      var ir = Math.sqrt(3) / 6 * s; // radius of inner circle
      var h = Math.sqrt(s * s - s2 * s2); // height

      this.moveTo(x, y - (h - ir));
      this.lineTo(x + s2, y + ir);
      this.lineTo(x - s2, y + ir);
      this.lineTo(x, y - (h - ir));
      this.closePath();
    };

    /**
     * Draw a triangle shape in downward orientation
     * @param {Number} x horizontal center
     * @param {Number} y vertical center
     * @param {Number} r radius
     */
    CanvasRenderingContext2D.prototype.triangleDown = function (x, y, r) {
      // http://en.wikipedia.org/wiki/Equilateral_triangle
      this.beginPath();

      // the change in radius and the offset is here to center the shape
      r *= 1.15;
      y -= 0.275 * r;

      var s = r * 2;
      var s2 = s / 2;
      var ir = Math.sqrt(3) / 6 * s; // radius of inner circle
      var h = Math.sqrt(s * s - s2 * s2); // height

      this.moveTo(x, y + (h - ir));
      this.lineTo(x + s2, y - ir);
      this.lineTo(x - s2, y - ir);
      this.lineTo(x, y + (h - ir));
      this.closePath();
    };

    /**
     * Draw a star shape, a star with 5 points
     * @param {Number} x horizontal center
     * @param {Number} y vertical center
     * @param {Number} r   radius, half the length of the sides of the triangle
     */
    CanvasRenderingContext2D.prototype.star = function (x, y, r) {
      // http://www.html5canvastutorials.com/labs/html5-canvas-star-spinner/
      this.beginPath();

      // the change in radius and the offset is here to center the shape
      r *= 0.82;
      y += 0.1 * r;

      for (var n = 0; n < 10; n++) {
        var radius = n % 2 === 0 ? r * 1.3 : r * 0.5;
        this.lineTo(x + radius * Math.sin(n * 2 * Math.PI / 10), y - radius * Math.cos(n * 2 * Math.PI / 10));
      }

      this.closePath();
    };

    /**
     * Draw a Diamond shape
     * @param {Number} x horizontal center
     * @param {Number} y vertical center
     * @param {Number} r   radius, half the length of the sides of the triangle
     */
    CanvasRenderingContext2D.prototype.diamond = function (x, y, r) {
      // http://www.html5canvastutorials.com/labs/html5-canvas-star-spinner/
      this.beginPath();

      this.lineTo(x, y + r);
      this.lineTo(x + r, y);
      this.lineTo(x, y - r);
      this.lineTo(x - r, y);

      this.closePath();
    };

    /**
     * http://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-on-html-canvas
     */
    CanvasRenderingContext2D.prototype.roundRect = function (x, y, w, h, r) {
      var r2d = Math.PI / 180;
      if (w - 2 * r < 0) {
        r = w / 2;
      } //ensure that the radius isn't too large for x
      if (h - 2 * r < 0) {
        r = h / 2;
      } //ensure that the radius isn't too large for y
      this.beginPath();
      this.moveTo(x + r, y);
      this.lineTo(x + w - r, y);
      this.arc(x + w - r, y + r, r, r2d * 270, r2d * 360, false);
      this.lineTo(x + w, y + h - r);
      this.arc(x + w - r, y + h - r, r, 0, r2d * 90, false);
      this.lineTo(x + r, y + h);
      this.arc(x + r, y + h - r, r, r2d * 90, r2d * 180, false);
      this.lineTo(x, y + r);
      this.arc(x + r, y + r, r, r2d * 180, r2d * 270, false);
      this.closePath();
    };

    /**
     * http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas
     */
    CanvasRenderingContext2D.prototype.ellipse = function (x, y, w, h) {
      var kappa = .5522848,
          ox = w / 2 * kappa,
          // control point offset horizontal
      oy = h / 2 * kappa,
          // control point offset vertical
      xe = x + w,
          // x-end
      ye = y + h,
          // y-end
      xm = x + w / 2,
          // x-middle
      ym = y + h / 2; // y-middle

      this.beginPath();
      this.moveTo(x, ym);
      this.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
      this.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
      this.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
      this.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
      this.closePath();
    };

    /**
     * http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas
     */
    CanvasRenderingContext2D.prototype.database = function (x, y, w, h) {
      var f = 1 / 3;
      var wEllipse = w;
      var hEllipse = h * f;

      var kappa = .5522848,
          ox = wEllipse / 2 * kappa,
          // control point offset horizontal
      oy = hEllipse / 2 * kappa,
          // control point offset vertical
      xe = x + wEllipse,
          // x-end
      ye = y + hEllipse,
          // y-end
      xm = x + wEllipse / 2,
          // x-middle
      ym = y + hEllipse / 2,
          // y-middle
      ymb = y + (h - hEllipse / 2),
          // y-midlle, bottom ellipse
      yeb = y + h; // y-end, bottom ellipse

      this.beginPath();
      this.moveTo(xe, ym);

      this.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
      this.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);

      this.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
      this.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);

      this.lineTo(xe, ymb);

      this.bezierCurveTo(xe, ymb + oy, xm + ox, yeb, xm, yeb);
      this.bezierCurveTo(xm - ox, yeb, x, ymb + oy, x, ymb);

      this.lineTo(x, ym);
    };

    /**
     * Draw an arrow point (no line)
     */
    CanvasRenderingContext2D.prototype.arrow = function (x, y, angle, length) {
      // tail
      var xt = x - length * Math.cos(angle);
      var yt = y - length * Math.sin(angle);

      // inner tail
      var xi = x - length * 0.9 * Math.cos(angle);
      var yi = y - length * 0.9 * Math.sin(angle);

      // left
      var xl = xt + length / 3 * Math.cos(angle + 0.5 * Math.PI);
      var yl = yt + length / 3 * Math.sin(angle + 0.5 * Math.PI);

      // right
      var xr = xt + length / 3 * Math.cos(angle - 0.5 * Math.PI);
      var yr = yt + length / 3 * Math.sin(angle - 0.5 * Math.PI);

      this.beginPath();
      this.moveTo(x, y);
      this.lineTo(xl, yl);
      this.lineTo(xi, yi);
      this.lineTo(xr, yr);
      this.closePath();
    };

    /**
     * Sets up the dashedLine functionality for drawing
     * Original code came from http://stackoverflow.com/questions/4576724/dotted-stroke-in-canvas
     * @author David Jordan
     * @date 2012-08-08
     */
    CanvasRenderingContext2D.prototype.dashedLine = function (x, y, x2, y2, pattern) {
      this.beginPath();
      this.moveTo(x, y);

      var patternLength = pattern.length;
      var dx = x2 - x;
      var dy = y2 - y;
      var slope = dy / dx;
      var distRemaining = Math.sqrt(dx * dx + dy * dy);
      var patternIndex = 0;
      var draw = true;
      var xStep = 0;
      var dashLength = pattern[0];

      while (distRemaining >= 0.1) {
        dashLength = pattern[patternIndex++ % patternLength];
        if (dashLength > distRemaining) {
          dashLength = distRemaining;
        }

        xStep = Math.sqrt(dashLength * dashLength / (1 + slope * slope));
        xStep = dx < 0 ? -xStep : xStep;
        x += xStep;
        y += slope * xStep;

        if (draw === true) {
          this.lineTo(x, y);
        } else {
          this.moveTo(x, y);
        }

        distRemaining -= dashLength;
        draw = !draw;
      }
    };
  }

/***/ },
/* 114 */
/***/ function(module, exports) {

  /**
   * Parse a text source containing data in DOT language into a JSON object.
   * The object contains two lists: one with nodes and one with edges.
   *
   * DOT language reference: http://www.graphviz.org/doc/info/lang.html
   *
   * DOT language attributes: http://graphviz.org/content/attrs
   *
   * @param {String} data     Text containing a graph in DOT-notation
   * @return {Object} graph   An object containing two parameters:
   *                          {Object[]} nodes
   *                          {Object[]} edges
   */
  'use strict';

  function parseDOT(data) {
    dot = data;
    return parseGraph();
  }

  // mapping of attributes from DOT (the keys) to vis.js (the values)
  var NODE_ATTR_MAPPING = {
    'fontsize': 'font.size',
    'fontcolor': 'font.color',
    'labelfontcolor': 'font.color',
    'fontname': 'font.face',
    'color': ['color.border', 'color.background'],
    'fillcolor': 'color.background',
    'tooltip': 'title',
    'labeltooltip': 'title'
  };
  var EDGE_ATTR_MAPPING = Object.create(NODE_ATTR_MAPPING);
  EDGE_ATTR_MAPPING.color = 'color.color';

  // token types enumeration
  var TOKENTYPE = {
    NULL: 0,
    DELIMITER: 1,
    IDENTIFIER: 2,
    UNKNOWN: 3
  };

  // map with all delimiters
  var DELIMITERS = {
    '{': true,
    '}': true,
    '[': true,
    ']': true,
    ';': true,
    '=': true,
    ',': true,

    '->': true,
    '--': true
  };

  var dot = ''; // current dot file
  var index = 0; // current index in dot file
  var c = ''; // current token character in expr
  var token = ''; // current token
  var tokenType = TOKENTYPE.NULL; // type of the token

  /**
   * Get the first character from the dot file.
   * The character is stored into the char c. If the end of the dot file is
   * reached, the function puts an empty string in c.
   */
  function first() {
    index = 0;
    c = dot.charAt(0);
  }

  /**
   * Get the next character from the dot file.
   * The character is stored into the char c. If the end of the dot file is
   * reached, the function puts an empty string in c.
   */
  function next() {
    index++;
    c = dot.charAt(index);
  }

  /**
   * Preview the next character from the dot file.
   * @return {String} cNext
   */
  function nextPreview() {
    return dot.charAt(index + 1);
  }

  /**
   * Test whether given character is alphabetic or numeric
   * @param {String} c
   * @return {Boolean} isAlphaNumeric
   */
  var regexAlphaNumeric = /[a-zA-Z_0-9.:#]/;
  function isAlphaNumeric(c) {
    return regexAlphaNumeric.test(c);
  }

  /**
   * Merge all options of object b into object b
   * @param {Object} a
   * @param {Object} b
   * @return {Object} a
   */
  function merge(a, b) {
    if (!a) {
      a = {};
    }

    if (b) {
      for (var name in b) {
        if (b.hasOwnProperty(name)) {
          a[name] = b[name];
        }
      }
    }
    return a;
  }

  /**
   * Set a value in an object, where the provided parameter name can be a
   * path with nested parameters. For example:
   *
   *     var obj = {a: 2};
   *     setValue(obj, 'b.c', 3);     // obj = {a: 2, b: {c: 3}}
   *
   * @param {Object} obj
   * @param {String} path  A parameter name or dot-separated parameter path,
   *                      like "color.highlight.border".
   * @param {*} value
   */
  function setValue(obj, path, value) {
    var keys = path.split('.');
    var o = obj;
    while (keys.length) {
      var key = keys.shift();
      if (keys.length) {
        // this isn't the end point
        if (!o[key]) {
          o[key] = {};
        }
        o = o[key];
      } else {
        // this is the end point
        o[key] = value;
      }
    }
  }

  /**
   * Add a node to a graph object. If there is already a node with
   * the same id, their attributes will be merged.
   * @param {Object} graph
   * @param {Object} node
   */
  function addNode(graph, node) {
    var i, len;
    var current = null;

    // find root graph (in case of subgraph)
    var graphs = [graph]; // list with all graphs from current graph to root graph
    var root = graph;
    while (root.parent) {
      graphs.push(root.parent);
      root = root.parent;
    }

    // find existing node (at root level) by its id
    if (root.nodes) {
      for (i = 0, len = root.nodes.length; i < len; i++) {
        if (node.id === root.nodes[i].id) {
          current = root.nodes[i];
          break;
        }
      }
    }

    if (!current) {
      // this is a new node
      current = {
        id: node.id
      };
      if (graph.node) {
        // clone default attributes
        current.attr = merge(current.attr, graph.node);
      }
    }

    // add node to this (sub)graph and all its parent graphs
    for (i = graphs.length - 1; i >= 0; i--) {
      var g = graphs[i];

      if (!g.nodes) {
        g.nodes = [];
      }
      if (g.nodes.indexOf(current) === -1) {
        g.nodes.push(current);
      }
    }

    // merge attributes
    if (node.attr) {
      current.attr = merge(current.attr, node.attr);
    }
  }

  /**
   * Add an edge to a graph object
   * @param {Object} graph
   * @param {Object} edge
   */
  function addEdge(graph, edge) {
    if (!graph.edges) {
      graph.edges = [];
    }
    graph.edges.push(edge);
    if (graph.edge) {
      var attr = merge({}, graph.edge); // clone default attributes
      edge.attr = merge(attr, edge.attr); // merge attributes
    }
  }

  /**
   * Create an edge to a graph object
   * @param {Object} graph
   * @param {String | Number | Object} from
   * @param {String | Number | Object} to
   * @param {String} type
   * @param {Object | null} attr
   * @return {Object} edge
   */
  function createEdge(graph, from, to, type, attr) {
    var edge = {
      from: from,
      to: to,
      type: type
    };

    if (graph.edge) {
      edge.attr = merge({}, graph.edge); // clone default attributes
    }
    edge.attr = merge(edge.attr || {}, attr); // merge attributes

    return edge;
  }

  /**
   * Get next token in the current dot file.
   * The token and token type are available as token and tokenType
   */
  function getToken() {
    tokenType = TOKENTYPE.NULL;
    token = '';

    // skip over whitespaces
    while (c === ' ' || c === '\t' || c === '\n' || c === '\r') {
      // space, tab, enter
      next();
    }

    do {
      var isComment = false;

      // skip comment
      if (c === '#') {
        // find the previous non-space character
        var i = index - 1;
        while (dot.charAt(i) === ' ' || dot.charAt(i) === '\t') {
          i--;
        }
        if (dot.charAt(i) === '\n' || dot.charAt(i) === '') {
          // the # is at the start of a line, this is indeed a line comment
          while (c != '' && c != '\n') {
            next();
          }
          isComment = true;
        }
      }
      if (c === '/' && nextPreview() === '/') {
        // skip line comment
        while (c != '' && c != '\n') {
          next();
        }
        isComment = true;
      }
      if (c === '/' && nextPreview() === '*') {
        // skip block comment
        while (c != '') {
          if (c === '*' && nextPreview() === '/') {
            // end of block comment found. skip these last two characters
            next();
            next();
            break;
          } else {
            next();
          }
        }
        isComment = true;
      }

      // skip over whitespaces
      while (c === ' ' || c === '\t' || c === '\n' || c === '\r') {
        // space, tab, enter
        next();
      }
    } while (isComment);

    // check for end of dot file
    if (c === '') {
      // token is still empty
      tokenType = TOKENTYPE.DELIMITER;
      return;
    }

    // check for delimiters consisting of 2 characters
    var c2 = c + nextPreview();
    if (DELIMITERS[c2]) {
      tokenType = TOKENTYPE.DELIMITER;
      token = c2;
      next();
      next();
      return;
    }

    // check for delimiters consisting of 1 character
    if (DELIMITERS[c]) {
      tokenType = TOKENTYPE.DELIMITER;
      token = c;
      next();
      return;
    }

    // check for an identifier (number or string)
    // TODO: more precise parsing of numbers/strings (and the port separator ':')
    if (isAlphaNumeric(c) || c === '-') {
      token += c;
      next();

      while (isAlphaNumeric(c)) {
        token += c;
        next();
      }
      if (token === 'false') {
        token = false; // convert to boolean
      } else if (token === 'true') {
          token = true; // convert to boolean
        } else if (!isNaN(Number(token))) {
            token = Number(token); // convert to number
          }
      tokenType = TOKENTYPE.IDENTIFIER;
      return;
    }

    // check for a string enclosed by double quotes
    if (c === '"') {
      next();
      while (c != '' && (c != '"' || c === '"' && nextPreview() === '"')) {
        token += c;
        if (c === '"') {
          // skip the escape character
          next();
        }
        next();
      }
      if (c != '"') {
        throw newSyntaxError('End of string " expected');
      }
      next();
      tokenType = TOKENTYPE.IDENTIFIER;
      return;
    }

    // something unknown is found, wrong characters, a syntax error
    tokenType = TOKENTYPE.UNKNOWN;
    while (c != '') {
      token += c;
      next();
    }
    throw new SyntaxError('Syntax error in part "' + chop(token, 30) + '"');
  }

  /**
   * Parse a graph.
   * @returns {Object} graph
   */
  function parseGraph() {
    var graph = {};

    first();
    getToken();

    // optional strict keyword
    if (token === 'strict') {
      graph.strict = true;
      getToken();
    }

    // graph or digraph keyword
    if (token === 'graph' || token === 'digraph') {
      graph.type = token;
      getToken();
    }

    // optional graph id
    if (tokenType === TOKENTYPE.IDENTIFIER) {
      graph.id = token;
      getToken();
    }

    // open angle bracket
    if (token != '{') {
      throw newSyntaxError('Angle bracket { expected');
    }
    getToken();

    // statements
    parseStatements(graph);

    // close angle bracket
    if (token != '}') {
      throw newSyntaxError('Angle bracket } expected');
    }
    getToken();

    // end of file
    if (token !== '') {
      throw newSyntaxError('End of file expected');
    }
    getToken();

    // remove temporary default options
    delete graph.node;
    delete graph.edge;
    delete graph.graph;

    return graph;
  }

  /**
   * Parse a list with statements.
   * @param {Object} graph
   */
  function parseStatements(graph) {
    while (token !== '' && token != '}') {
      parseStatement(graph);
      if (token === ';') {
        getToken();
      }
    }
  }

  /**
   * Parse a single statement. Can be a an attribute statement, node
   * statement, a series of node statements and edge statements, or a
   * parameter.
   * @param {Object} graph
   */
  function parseStatement(graph) {
    // parse subgraph
    var subgraph = parseSubgraph(graph);
    if (subgraph) {
      // edge statements
      parseEdge(graph, subgraph);

      return;
    }

    // parse an attribute statement
    var attr = parseAttributeStatement(graph);
    if (attr) {
      return;
    }

    // parse node
    if (tokenType != TOKENTYPE.IDENTIFIER) {
      throw newSyntaxError('Identifier expected');
    }
    var id = token; // id can be a string or a number
    getToken();

    if (token === '=') {
      // id statement
      getToken();
      if (tokenType != TOKENTYPE.IDENTIFIER) {
        throw newSyntaxError('Identifier expected');
      }
      graph[id] = token;
      getToken();
      // TODO: implement comma separated list with "a_list: ID=ID [','] [a_list] "
    } else {
        parseNodeStatement(graph, id);
      }
  }

  /**
   * Parse a subgraph
   * @param {Object} graph    parent graph object
   * @return {Object | null} subgraph
   */
  function parseSubgraph(graph) {
    var subgraph = null;

    // optional subgraph keyword
    if (token === 'subgraph') {
      subgraph = {};
      subgraph.type = 'subgraph';
      getToken();

      // optional graph id
      if (tokenType === TOKENTYPE.IDENTIFIER) {
        subgraph.id = token;
        getToken();
      }
    }

    // open angle bracket
    if (token === '{') {
      getToken();

      if (!subgraph) {
        subgraph = {};
      }
      subgraph.parent = graph;
      subgraph.node = graph.node;
      subgraph.edge = graph.edge;
      subgraph.graph = graph.graph;

      // statements
      parseStatements(subgraph);

      // close angle bracket
      if (token != '}') {
        throw newSyntaxError('Angle bracket } expected');
      }
      getToken();

      // remove temporary default options
      delete subgraph.node;
      delete subgraph.edge;
      delete subgraph.graph;
      delete subgraph.parent;

      // register at the parent graph
      if (!graph.subgraphs) {
        graph.subgraphs = [];
      }
      graph.subgraphs.push(subgraph);
    }

    return subgraph;
  }

  /**
   * parse an attribute statement like "node [shape=circle fontSize=16]".
   * Available keywords are 'node', 'edge', 'graph'.
   * The previous list with default attributes will be replaced
   * @param {Object} graph
   * @returns {String | null} keyword Returns the name of the parsed attribute
   *                                  (node, edge, graph), or null if nothing
   *                                  is parsed.
   */
  function parseAttributeStatement(graph) {
    // attribute statements
    if (token === 'node') {
      getToken();

      // node attributes
      graph.node = parseAttributeList();
      return 'node';
    } else if (token === 'edge') {
      getToken();

      // edge attributes
      graph.edge = parseAttributeList();
      return 'edge';
    } else if (token === 'graph') {
      getToken();

      // graph attributes
      graph.graph = parseAttributeList();
      return 'graph';
    }

    return null;
  }

  /**
   * parse a node statement
   * @param {Object} graph
   * @param {String | Number} id
   */
  function parseNodeStatement(graph, id) {
    // node statement
    var node = {
      id: id
    };
    var attr = parseAttributeList();
    if (attr) {
      node.attr = attr;
    }
    addNode(graph, node);

    // edge statements
    parseEdge(graph, id);
  }

  /**
   * Parse an edge or a series of edges
   * @param {Object} graph
   * @param {String | Number} from        Id of the from node
   */
  function parseEdge(graph, from) {
    while (token === '->' || token === '--') {
      var to;
      var type = token;
      getToken();

      var subgraph = parseSubgraph(graph);
      if (subgraph) {
        to = subgraph;
      } else {
        if (tokenType != TOKENTYPE.IDENTIFIER) {
          throw newSyntaxError('Identifier or subgraph expected');
        }
        to = token;
        addNode(graph, {
          id: to
        });
        getToken();
      }

      // parse edge attributes
      var attr = parseAttributeList();

      // create edge
      var edge = createEdge(graph, from, to, type, attr);
      addEdge(graph, edge);

      from = to;
    }
  }

  /**
   * Parse a set with attributes,
   * for example [label="1.000", shape=solid]
   * @return {Object | null} attr
   */
  function parseAttributeList() {
    var attr = null;

    while (token === '[') {
      getToken();
      attr = {};
      while (token !== '' && token != ']') {
        if (tokenType != TOKENTYPE.IDENTIFIER) {
          throw newSyntaxError('Attribute name expected');
        }
        var name = token;

        getToken();
        if (token != '=') {
          throw newSyntaxError('Equal sign = expected');
        }
        getToken();

        if (tokenType != TOKENTYPE.IDENTIFIER) {
          throw newSyntaxError('Attribute value expected');
        }
        var value = token;
        setValue(attr, name, value); // name can be a path

        getToken();
        if (token == ',') {
          getToken();
        }
      }

      if (token != ']') {
        throw newSyntaxError('Bracket ] expected');
      }
      getToken();
    }

    return attr;
  }

  /**
   * Create a syntax error with extra information on current token and index.
   * @param {String} message
   * @returns {SyntaxError} err
   */
  function newSyntaxError(message) {
    return new SyntaxError(message + ', got "' + chop(token, 30) + '" (char ' + index + ')');
  }

  /**
   * Chop off text after a maximum length
   * @param {String} text
   * @param {Number} maxLength
   * @returns {String}
   */
  function chop(text, maxLength) {
    return text.length <= maxLength ? text : text.substr(0, 27) + '...';
  }

  /**
   * Execute a function fn for each pair of elements in two arrays
   * @param {Array | *} array1
   * @param {Array | *} array2
   * @param {function} fn
   */
  function forEach2(array1, array2, fn) {
    if (Array.isArray(array1)) {
      array1.forEach(function (elem1) {
        if (Array.isArray(array2)) {
          array2.forEach(function (elem2) {
            fn(elem1, elem2);
          });
        } else {
          fn(elem1, array2);
        }
      });
    } else {
      if (Array.isArray(array2)) {
        array2.forEach(function (elem2) {
          fn(array1, elem2);
        });
      } else {
        fn(array1, array2);
      }
    }
  }

  /**
   * Set a nested property on an object
   * When nested objects are missing, they will be created.
   * For example setProp({}, 'font.color', 'red') will return {font: {color: 'red'}}
   * @param {Object} object
   * @param {string} path   A dot separated string like 'font.color'
   * @param {*} value       Value for the property
   * @return {Object} Returns the original object, allows for chaining.
   */
  function setProp(object, path, value) {
    var names = path.split('.');
    var prop = names.pop();

    // traverse over the nested objects
    var obj = object;
    for (var i = 0; i < names.length; i++) {
      var name = names[i];
      if (!(name in obj)) {
        obj[name] = {};
      }
      obj = obj[name];
    }

    // set the property value
    obj[prop] = value;

    return object;
  }

  /**
   * Convert an object with DOT attributes to their vis.js equivalents.
   * @param {Object} attr     Object with DOT attributes
   * @param {Object} mapping
   * @return {Object}         Returns an object with vis.js attributes
   */
  function convertAttr(attr, mapping) {
    var converted = {};

    for (var prop in attr) {
      if (attr.hasOwnProperty(prop)) {
        var visProp = mapping[prop];
        if (Array.isArray(visProp)) {
          visProp.forEach(function (visPropI) {
            setProp(converted, visPropI, attr[prop]);
          });
        } else if (typeof visProp === 'string') {
          setProp(converted, visProp, attr[prop]);
        } else {
          setProp(converted, prop, attr[prop]);
        }
      }
    }

    return converted;
  }

  /**
   * Convert a string containing a graph in DOT language into a map containing
   * with nodes and edges in the format of graph.
   * @param {String} data         Text containing a graph in DOT-notation
   * @return {Object} graphData
   */
  function DOTToGraph(data) {
    // parse the DOT file
    var dotData = parseDOT(data);
    var graphData = {
      nodes: [],
      edges: [],
      options: {}
    };

    // copy the nodes
    if (dotData.nodes) {
      dotData.nodes.forEach(function (dotNode) {
        var graphNode = {
          id: dotNode.id,
          label: String(dotNode.label || dotNode.id)
        };
        merge(graphNode, convertAttr(dotNode.attr, NODE_ATTR_MAPPING));
        if (graphNode.image) {
          graphNode.shape = 'image';
        }
        graphData.nodes.push(graphNode);
      });
    }

    // copy the edges
    if (dotData.edges) {
      /**
       * Convert an edge in DOT format to an edge with VisGraph format
       * @param {Object} dotEdge
       * @returns {Object} graphEdge
       */
      var convertEdge = function convertEdge(dotEdge) {
        var graphEdge = {
          from: dotEdge.from,
          to: dotEdge.to
        };
        merge(graphEdge, convertAttr(dotEdge.attr, EDGE_ATTR_MAPPING));
        graphEdge.arrows = dotEdge.type === '->' ? 'to' : undefined;

        return graphEdge;
      };

      dotData.edges.forEach(function (dotEdge) {
        var from, to;
        if (dotEdge.from instanceof Object) {
          from = dotEdge.from.nodes;
        } else {
          from = {
            id: dotEdge.from
          };
        }

        // TODO: support of solid/dotted/dashed edges (attr = 'style')
        // TODO: support for attributes 'dir' and 'arrowhead' (edge arrows)

        if (dotEdge.to instanceof Object) {
          to = dotEdge.to.nodes;
        } else {
          to = {
            id: dotEdge.to
          };
        }

        if (dotEdge.from instanceof Object && dotEdge.from.edges) {
          dotEdge.from.edges.forEach(function (subEdge) {
            var graphEdge = convertEdge(subEdge);
            graphData.edges.push(graphEdge);
          });
        }

        forEach2(from, to, function (from, to) {
          var subEdge = createEdge(graphData, from.id, to.id, dotEdge.type, dotEdge.attr);
          var graphEdge = convertEdge(subEdge);
          graphData.edges.push(graphEdge);
        });

        if (dotEdge.to instanceof Object && dotEdge.to.edges) {
          dotEdge.to.edges.forEach(function (subEdge) {
            var graphEdge = convertEdge(subEdge);
            graphData.edges.push(graphEdge);
          });
        }
      });
    }

    // copy the options
    if (dotData.attr) {
      graphData.options = dotData.attr;
    }

    return graphData;
  }

  // exports
  exports.parseDOT = parseDOT;
  exports.DOTToGraph = DOTToGraph;

/***/ },
/* 115 */
/***/ function(module, exports) {

  'use strict';

  function parseGephi(gephiJSON, optionsObj) {
    var edges = [];
    var nodes = [];
    var options = {
      edges: {
        inheritColor: false
      },
      nodes: {
        fixed: false,
        parseColor: false
      }
    };

    if (optionsObj !== undefined) {
      if (optionsObj.fixed !== undefined) {
        options.nodes.fixed = optionsObj.fixed;
      }
      if (optionsObj.parseColor !== undefined) {
        options.nodes.parseColor = optionsObj.parseColor;
      }
      if (optionsObj.inheritColor !== undefined) {
        options.edges.inheritColor = optionsObj.inheritColor;
      }
    }

    var gEdges = gephiJSON.edges;
    var gNodes = gephiJSON.nodes;
    for (var i = 0; i < gEdges.length; i++) {
      var edge = {};
      var gEdge = gEdges[i];
      edge['id'] = gEdge.id;
      edge['from'] = gEdge.source;
      edge['to'] = gEdge.target;
      edge['attributes'] = gEdge.attributes;
      edge['label'] = gEdge.label;
      edge['title'] = gEdge.attributes !== undefined ? gEdge.attributes.title : undefined;
      if (gEdge['type'] === 'Directed') {
        edge['arrows'] = 'to';
      }
      //    edge['value'] = gEdge.attributes !== undefined ? gEdge.attributes.Weight : undefined;
      //    edge['width'] = edge['value'] !== undefined ? undefined : edgegEdge.size;
      if (gEdge.color && options.inheritColor === false) {
        edge['color'] = gEdge.color;
      }
      edges.push(edge);
    }

    for (var i = 0; i < gNodes.length; i++) {
      var node = {};
      var gNode = gNodes[i];
      node['id'] = gNode.id;
      node['attributes'] = gNode.attributes;
      node['title'] = gNode.title;
      node['x'] = gNode.x;
      node['y'] = gNode.y;
      node['label'] = gNode.label;
      node['title'] = gNode.attributes !== undefined ? gNode.attributes.title : undefined;
      if (options.nodes.parseColor === true) {
        node['color'] = gNode.color;
      } else {
        node['color'] = gNode.color !== undefined ? { background: gNode.color, border: gNode.color, highlight: { background: gNode.color, border: gNode.color }, hover: { background: gNode.color, border: gNode.color } } : undefined;
      }
      node['size'] = gNode.size;
      node['fixed'] = options.nodes.fixed && gNode.x !== undefined && gNode.y !== undefined;
      nodes.push(node);
    }

    return { nodes: nodes, edges: edges };
  }

  exports.parseGephi = parseGephi;

/***/ },
/* 116 */
/***/ function(module, exports) {

  /**
   * @class Images
   * This class loads images and keeps them stored.
   */
  "use strict";

  Object.defineProperty(exports, "__esModule", {
      value: true
  });

  var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  var Images = (function () {
      function Images(callback) {
          _classCallCheck(this, Images);

          this.images = {};
          this.imageBroken = {};
          this.callback = callback;
      }

      /**
       * @param {string} url                      The Url to cache the image as 
        * @return {Image} imageToLoadBrokenUrlOn  The image object
       */

      _createClass(Images, [{
          key: "_addImageToCache",
          value: function _addImageToCache(url, imageToCache) {
              // IE11 fix -- thanks dponch!
              if (imageToCache.width === 0) {
                  document.body.appendChild(imageToCache);
                  imageToCache.width = imageToCache.offsetWidth;
                  imageToCache.height = imageToCache.offsetHeight;
                  document.body.removeChild(imageToCache);
              }

              this.images[url] = imageToCache;
          }

          /**
           * @param {string} url                      The original Url that failed to load, if the broken image is successfully loaded it will be added to the cache using this Url as the key so that subsequent requests for this Url will return the broken image
           * @param {string} brokenUrl                Url the broken image to try and load
           * @return {Image} imageToLoadBrokenUrlOn   The image object
           */
      }, {
          key: "_tryloadBrokenUrl",
          value: function _tryloadBrokenUrl(url, brokenUrl, imageToLoadBrokenUrlOn) {
              var _this = this;

              //If any of the parameters aren't specified then exit the function because nothing constructive can be done
              if (url === undefined || brokenUrl === undefined || imageToLoadBrokenUrlOn === undefined) return;

              //Clear the old subscription to the error event and put a new in place that only handle errors in loading the brokenImageUrl
              imageToLoadBrokenUrlOn.onerror = function () {
                  console.error("Could not load brokenImage:", brokenUrl);
                  //Add an empty image to the cache so that when subsequent load calls are made for the url we don't try load the image and broken image again
                  _this._addImageToCache(url, new Image());
              };

              //Set the source of the image to the brokenUrl, this is actually what kicks off the loading of the broken image
              imageToLoadBrokenUrlOn.src = brokenUrl;
          }

          /**
           * @return {Image} imageToRedrawWith The images that will be passed to the callback when it is invoked
           */
      }, {
          key: "_redrawWithImage",
          value: function _redrawWithImage(imageToRedrawWith) {
              if (this.callback) {
                  this.callback(imageToRedrawWith);
              }
          }

          /**
           * @param {string} url          Url of the image
           * @param {string} brokenUrl    Url of an image to use if the url image is not found
           * @return {Image} img          The image object
           */
      }, {
          key: "load",
          value: function load(url, brokenUrl, id) {
              var _this2 = this;

              //Try and get the image from the cache, if successful then return the cached image  
              var cachedImage = this.images[url];
              if (cachedImage) return cachedImage;

              //Create a new image
              var img = new Image();

              //Subscribe to the event that is raised if the image loads successfully
              img.onload = function () {
                  //Add the image to the cache and then request a redraw
                  _this2._addImageToCache(url, img);
                  _this2._redrawWithImage(img);
              };

              //Subscribe to the event that is raised if the image fails to load
              img.onerror = function () {
                  console.error("Could not load image:", url);
                  //Try and load the image specified by the brokenUrl using
                  _this2._tryloadBrokenUrl(url, brokenUrl, img);
              };

              //Set the source of the image to the url, this is actuall what kicks off the loading of the image
              img.src = url;

              //Return the new image
              return img;
          }
      }]);

      return Images;
  })();

  exports["default"] = Images;
  module.exports = exports["default"];

/***/ },
/* 117 */
/***/ function(module, exports) {

  // English
  'use strict';

  exports['en'] = {
    edit: 'Edit',
    del: 'Delete selected',
    back: 'Back',
    addNode: 'Add Node',
    addEdge: 'Add Edge',
    editNode: 'Edit Node',
    editEdge: 'Edit Edge',
    addDescription: 'Click in an empty space to place a new node.',
    edgeDescription: 'Click on a node and drag the edge to another node to connect them.',
    editEdgeDescription: 'Click on the control points and drag them to a node to connect to it.',
    createEdgeError: 'Cannot link edges to a cluster.',
    deleteClusterError: 'Clusters cannot be deleted.',
    editClusterError: 'Clusters cannot be edited.'
  };
  exports['en_EN'] = exports['en'];
  exports['en_US'] = exports['en'];

  // German
  exports['de'] = {
    edit: 'Editieren',
    del: 'Lösche Auswahl',
    back: 'Zurück',
    addNode: 'Knoten hinzufügen',
    addEdge: 'Kante hinzufügen',
    editNode: 'Knoten editieren',
    editEdge: 'Kante editieren',
    addDescription: 'Klicke auf eine freie Stelle, um einen neuen Knoten zu plazieren.',
    edgeDescription: 'Klicke auf einen Knoten und ziehe die Kante zu einem anderen Knoten, um diese zu verbinden.',
    editEdgeDescription: 'Klicke auf die Verbindungspunkte und ziehe diese auf einen Knoten, um sie zu verbinden.',
    createEdgeError: 'Es ist nicht möglich, Kanten mit Clustern zu verbinden.',
    deleteClusterError: 'Cluster können nicht gelöscht werden.',
    editClusterError: 'Cluster können nicht editiert werden.'
  };
  exports['de_DE'] = exports['de'];

  // Spanish
  exports['es'] = {
    edit: 'Editar',
    del: 'Eliminar selección',
    back: 'Átras',
    addNode: 'Añadir nodo',
    addEdge: 'Añadir arista',
    editNode: 'Editar nodo',
    editEdge: 'Editar arista',
    addDescription: 'Haga clic en un lugar vacío para colocar un nuevo nodo.',
    edgeDescription: 'Haga clic en un nodo y arrastre la arista hacia otro nodo para conectarlos.',
    editEdgeDescription: 'Haga clic en un punto de control y arrastrelo a un nodo para conectarlo.',
    createEdgeError: 'No se puede conectar una arista a un grupo.',
    deleteClusterError: 'No es posible eliminar grupos.',
    editClusterError: 'No es posible editar grupos.'
  };
  exports['es_ES'] = exports['es'];

  // Dutch
  exports['nl'] = {
    edit: 'Wijzigen',
    del: 'Selectie verwijderen',
    back: 'Terug',
    addNode: 'Node toevoegen',
    addEdge: 'Link toevoegen',
    editNode: 'Node wijzigen',
    editEdge: 'Link wijzigen',
    addDescription: 'Klik op een leeg gebied om een nieuwe node te maken.',
    edgeDescription: 'Klik op een node en sleep de link naar een andere node om ze te verbinden.',
    editEdgeDescription: 'Klik op de verbindingspunten en sleep ze naar een node om daarmee te verbinden.',
    createEdgeError: 'Kan geen link maken naar een cluster.',
    deleteClusterError: 'Clusters kunnen niet worden verwijderd.',
    editClusterError: 'Clusters kunnen niet worden aangepast.'
  };
  exports['nl_NL'] = exports['nl'];
  exports['nl_BE'] = exports['nl'];

/***/ }
/******/ ])
});
;