/*
Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

CKEDITOR.plugins.add( 'menu',
{
	beforeInit : function( editor )
	{
		var groups = editor.config.menu_groups.split( ',' ),
			groupsOrder = editor._.menuGroups = {},
			menuItems = editor._.menuItems = {};

		for ( var i = 0 ; i < groups.length ; i++ )
			groupsOrder[ groups[ i ] ] = i + 1;

		/**
		 * Registers an item group to the editor context menu in order to make it
		 * possible to associate it with menu items later.
		 * @name CKEDITOR.editor.prototype.addMenuGroup
		 * @param {String} name Specify a group name.
		 * @param {Number} [order=100] Define the display sequence of this group
		 *  	inside the menu. A smaller value gets displayed first.
		 */
		editor.addMenuGroup = function( name, order )
			{
				groupsOrder[ name ] = order || 100;
			};

		/**
		 * Adds an item from the specified definition to the editor context menu.
		 * @name CKEDITOR.editor.prototype.addMenuItem
		 * @param {String} name The menu item name.
		 * @param {CKEDITOR.menu.definition} definition The menu item definition.
		 */
		editor.addMenuItem = function( name, definition )
			{
				if ( groupsOrder[ definition.group ] )
					menuItems[ name ] = new CKEDITOR.menuItem( this, name, definition );
			};

		/**
		 * Adds one or more items from the specified definition array to the editor context menu.
		 * @name CKEDITOR.editor.prototype.addMenuItems
		 * @param {Array} definitions List of definitions for each menu item as if {@link CKEDITOR.editor.addMenuItem} is called.
		 */
		editor.addMenuItems = function( definitions )
			{
				for ( var itemName in definitions )
				{
					this.addMenuItem( itemName, definitions[ itemName ] );
				}
			};

		/**
		 * Retrieves a particular menu item definition from the editor context menu.
		 * @name CKEDITOR.editor.prototype.getMenuItem
		 * @param {String} name The name of the desired menu item.
		 * @return {CKEDITOR.menu.definition}
		 */
		editor.getMenuItem = function( name )
			{
				return menuItems[ name ];
			};

		/**
		 * Removes a particular menu item added before from the editor context menu.
		 * @name CKEDITOR.editor.prototype.removeMenuItem
		 * @param {String} name The name of the desired menu item.
		 * @since 3.6.1
		 */
		editor.removeMenuItem = function( name )
			{
				delete menuItems[ name ];
			};
	},

	requires : [ 'floatpanel' ]
});

(function()
{
	CKEDITOR.menu = CKEDITOR.tools.createClass(
	{
		$ : function( editor, definition )
		{
			definition = this._.definition = definition || {};
			this.id = CKEDITOR.tools.getNextId();

			this.editor = editor;
			this.items = [];
			this._.listeners = [];

			this._.level = definition.level || 1;

			var panelDefinition = CKEDITOR.tools.extend( {}, definition.panel,
			{
				css : editor.skin.editor.css,
				level : this._.level - 1,
				block : {}
			} );

			var attrs = panelDefinition.block.attributes = ( panelDefinition.attributes || {} );
			// Provide default role of 'menu'.
			!attrs.role && ( attrs.role = 'menu' );
			this._.panelDefinition = panelDefinition;
		},

		_ :
		{
			onShow : function()
			{
				var selection = this.editor.getSelection();

				// Selection will be unavailable after menu shows up
				// in IE, lock it now.
				if ( CKEDITOR.env.ie )
					selection && selection.lock();

				var element = selection && selection.getStartElement(),
					listeners = this._.listeners,
					includedItems = [];

				this.removeAll();
				// Call all listeners, filling the list of items to be displayed.
				for ( var i = 0 ; i < listeners.length ; i++ )
				{
					var listenerItems = listeners[ i ]( element, selection );

					if ( listenerItems )
					{
						for ( var itemName in listenerItems )
						{
							var item = this.editor.getMenuItem( itemName );

							if ( item && ( !item.command || this.editor.getCommand( item.command ).state ) )
							{
								item.state = listenerItems[ itemName ];
								this.add( item );
							}
						}
					}
				}
			},

			onClick : function( item )
			{
				this.hide( false );

				if ( item.onClick )
					item.onClick();
				else if ( item.command )
					this.editor.execCommand( item.command );
			},

			onEscape : function( keystroke )
			{
				var parent = this.parent;
				// 1. If it's sub-menu, restore the last focused item
				// of upper level menu.
				// 2. In case of a top-menu, close it.
				if ( parent )
				{
					parent._.panel.hideChild();
					// Restore parent block item focus.
					var parentBlock = parent._.panel._.panel._.currentBlock,
						parentFocusIndex =  parentBlock._.focusIndex;
					parentBlock._.markItem( parentFocusIndex );
				}
				else if ( keystroke == 27 )
					this.hide();

				return false;
			},

			onHide : function()
			{
				this._.unlockSelection();
				this.onHide && this.onHide();
			},

			unlockSelection : function() {
				// Unlock the selection upon first panel closing.
				if ( CKEDITOR.env.ie && !this.parent )
				{
					var selection = this.editor.getSelection();
					selection && selection.unlock( true );
				}
			},

			showSubMenu : function( index )
			{
				var menu = this._.subMenu,
					item = this.items[ index ],
					subItemDefs = item.getItems && item.getItems();

				// If this item has no subitems, we just hide the submenu, if
				// available, and return back.
				if ( !subItemDefs )
				{
					this._.panel.hideChild();
					return;
				}

				// Record parent menu focused item first (#3389).
				var block = this._.panel.getBlock( this.id );
				block._.focusIndex = index;

				// Create the submenu, if not available, or clean the existing
				// one.
				if ( menu )
					menu.removeAll();
				else
				{
					menu = this._.subMenu = new CKEDITOR.menu( this.editor,
								   CKEDITOR.tools.extend( {}, this._.definition, { level : this._.level + 1 }, true ) );
					menu.parent = this;
					menu._.onClick = CKEDITOR.tools.bind( this._.onClick, this );
				}

				// Add all submenu items to the menu.
				for ( var subItemName in subItemDefs )
				{
					var subItem = this.editor.getMenuItem( subItemName );
					if ( subItem )
					{
						subItem.state = subItemDefs[ subItemName ];
						menu.add( subItem );
					}
				}

				// Get the element representing the current item.
				var element = this._.panel.getBlock( this.id ).element.getDocument().getById( this.id + String( index ) );

				// Show the submenu.
				menu.show( element, 2 );
			}
		},

		proto :
		{
			add : function( item )
			{
				// Later we may sort the items, but Array#sort is not stable in
				// some browsers, here we're forcing the original sequence with
				// 'order' attribute if it hasn't been assigned. (#3868)
				if ( !item.order )
					item.order = this.items.length;

				this.items.push( item );
			},

			removeAll : function()
			{
				this.items = [];
			},

			show : function( offsetParent, corner, offsetX, offsetY )
			{
				// Not for sub menu.
				if ( !this.parent )
				{
					this._.onShow();
					// Don't menu with zero items.
					if ( ! this.items.length ) {
						this._.unlockSelection();
						return;
					}
				}

				corner = corner || ( this.editor.lang.dir == 'rtl' ? 2 : 1 );

				var items = this.items,
					editor = this.editor,
					panel = this._.panel,
					element = this._.element;

				// Create the floating panel for this menu.
				if ( !panel )
				{
					panel = this._.panel = new CKEDITOR.ui.floatPanel( this.editor,
						CKEDITOR.document.getBody(),
						this._.panelDefinition,
						this._.level );

					panel.onEscape = CKEDITOR.tools.bind( function( keystroke )
					{
						if ( this._.onEscape( keystroke ) === false )
							return false;
					},
					this );

					panel.onHide = CKEDITOR.tools.bind( function()
					{
						this._.onHide && this._.onHide();
					},
					this );

					// Create an autosize block inside the panel.
					var block = panel.addBlock( this.id, this._.panelDefinition.block );
					block.autoSize = true;

					var keys = block.keys;
					keys[ 40 ]	= 'next';					// ARROW-DOWN
					keys[ 9 ]	= 'next';					// TAB
					keys[ 38 ]	= 'prev';					// ARROW-UP
					keys[ CKEDITOR.SHIFT + 9 ]	= 'prev';	// SHIFT + TAB
					keys[ ( editor.lang.dir == 'rtl' ? 37 : 39 ) ]= CKEDITOR.env.ie ? 'mouseup' : 'click';  // ARROW-RIGHT/ARROW-LEFT(rtl)
					keys[ 32 ]	= CKEDITOR.env.ie ? 'mouseup' : 'click';					// SPACE
					CKEDITOR.env.ie && ( keys[ 13 ] = 'mouseup' );		// Manage ENTER, since onclick is blocked in IE (#8041).

					element = this._.element = block.element;
					element.addClass( editor.skinClass );

					var elementDoc = element.getDocument();
					elementDoc.getBody().setStyle( 'overflow', 'hidden' );
					elementDoc.getElementsByTag( 'html' ).getItem( 0 ).setStyle( 'overflow', 'hidden' );

					this._.itemOverFn = CKEDITOR.tools.addFunction( function( index )
						{
							clearTimeout( this._.showSubTimeout );
							this._.showSubTimeout = CKEDITOR.tools.setTimeout( this._.showSubMenu, editor.config.menu_subMenuDelay || 400, this, [ index ] );
						},
						this );

					this._.itemOutFn = CKEDITOR.tools.addFunction( function( index )
						{
							clearTimeout( this._.showSubTimeout );
						},
						this );

					this._.itemClickFn = CKEDITOR.tools.addFunction( function( index )
						{
							var item = this.items[ index ];

							if ( item.state == CKEDITOR.TRISTATE_DISABLED )
							{
								this.hide();
								return;
							}

							if ( item.getItems )
								this._.showSubMenu( index );
							else
								this._.onClick( item );
						},
						this );
				}

				// Put the items in the right order.
				sortItems( items );

				var chromeRoot = editor.container.getChild( 1 ),
					mixedContentClass = chromeRoot.hasClass( 'cke_mixed_dir_content' ) ? ' cke_mixed_dir_content' : '';

				// Build the HTML that composes the menu and its items.
				var output = [ '<div class="cke_menu' + mixedContentClass + '" role="presentation">' ];

				var length = items.length,
					lastGroup = length && items[ 0 ].group;

				for ( var i = 0 ; i < length ; i++ )
				{
					var item = items[ i ];
					if ( lastGroup != item.group )
					{
						output.push( '<div class="cke_menuseparator" role="separator"></div>' );
						lastGroup = item.group;
					}

					item.render( this, i, output );
				}

				output.push( '</div>' );

				// Inject the HTML inside the panel.
				element.setHtml( output.join( '' ) );

				CKEDITOR.ui.fire( 'ready', this );

				// Show the panel.
				if ( this.parent )
					this.parent._.panel.showAsChild( panel, this.id, offsetParent, corner, offsetX, offsetY );
				else
					panel.showBlock( this.id, offsetParent, corner, offsetX, offsetY );

				editor.fire( 'menuShow', [ panel ] );
			},

			addListener : function( listenerFn )
			{
				this._.listeners.push( listenerFn );
			},

			hide : function( returnFocus )
			{
				this._.onHide && this._.onHide();
				this._.panel && this._.panel.hide( returnFocus );
			}
		}
	});

	function sortItems( items )
	{
		items.sort( function( itemA, itemB )
			{
				if ( itemA.group < itemB.group )
					return -1;
				else if ( itemA.group > itemB.group )
					return 1;

				return itemA.order < itemB.order ? -1 :
					itemA.order > itemB.order ? 1 :
					0;
			});
	}
	CKEDITOR.menuItem = CKEDITOR.tools.createClass(
	{
		$ : function( editor, name, definition )
		{
			CKEDITOR.tools.extend( this, definition,
				// Defaults
				{
					order : 0,
					className : 'cke_button_' + name
				});

			// Transform the group name into its order number.
			this.group = editor._.menuGroups[ this.group ];

			this.editor = editor;
			this.name = name;
		},

		proto :
		{
			render : function( menu, index, output )
			{
				var id = menu.id + String( index ),
					state = ( typeof this.state == 'undefined' ) ? CKEDITOR.TRISTATE_OFF : this.state;

				var classes = ' cke_' + (
					state == CKEDITOR.TRISTATE_ON ? 'on' :
					state == CKEDITOR.TRISTATE_DISABLED ? 'disabled' :
					'off' );

				var htmlLabel = this.label;

				if ( this.className )
					classes += ' ' + this.className;

			var hasSubMenu = this.getItems;

			output.push(
				'<span class="cke_menuitem' + ( this.icon && this.icon.indexOf( '.png' ) == -1 ? ' cke_noalphafix' : '' ) + '">' +
				'<a id="', id, '"' +
					' class="', classes, '" href="javascript:void(\'', ( this.label || '' ).replace( "'", '' ), '\')"' +
					' title="', this.label, '"' +
					' tabindex="-1"' +
					'_cke_focus=1' +
					' hidefocus="true"' +
					' role="menuitem"' +
					( hasSubMenu ? 'aria-haspopup="true"' : '' ) +
					( state == CKEDITOR.TRISTATE_DISABLED ? 'aria-disabled="true"' : '' ) +
					( state == CKEDITOR.TRISTATE_ON ? 'aria-pressed="true"' : '' ) );

				// Some browsers don't cancel key events in the keydown but in the
				// keypress.
				// TODO: Check if really needed for Gecko+Mac.
				if ( CKEDITOR.env.opera || ( CKEDITOR.env.gecko && CKEDITOR.env.mac ) )
				{
					output.push(
						' onkeypress="return false;"' );
				}

				// With Firefox, we need to force the button to redraw, otherwise it
				// will remain in the focus state.
				if ( CKEDITOR.env.gecko )
				{
					output.push(
						' onblur="this.style.cssText = this.style.cssText;"' );
				}

				var offset = ( this.iconOffset || 0 ) * -16;
				output.push(
//					' onkeydown="return CKEDITOR.ui.button._.keydown(', index, ', event);"' +
					' onmouseover="CKEDITOR.tools.callFunction(', menu._.itemOverFn, ',', index, ');"' +
					' onmouseout="CKEDITOR.tools.callFunction(', menu._.itemOutFn, ',', index, ');" ' +
					( CKEDITOR.env.ie ? 'onclick="return false;" onmouseup' : 'onclick' ) +		// #188
						'="CKEDITOR.tools.callFunction(', menu._.itemClickFn, ',', index, '); return false;"' +
					'>' +
						'<span class="cke_icon_wrapper"><span class="cke_icon"' +
							( this.icon ? ' style="background-image:url(' + CKEDITOR.getUrl( this.icon ) + ');background-position:0 ' + offset + 'px;"'
							: '' ) +
							'></span></span>' +
						'<span class="cke_label">' );

			if ( hasSubMenu )
			{
				output.push(
							'<span class="cke_menuarrow">',
								'<span>&#',
									( this.editor.lang.dir == 'rtl' ?
										'9668' :	// BLACK LEFT-POINTING POINTER
										'9658' ),	// BLACK RIGHT-POINTING POINTER
								';</span>',
							'</span>' );
			}

				output.push(
								htmlLabel,
							'</span>' +
					'</a>' +
					'</span>' );
		}
		}
	});

})();


/**
 * The amount of time, in milliseconds, the editor waits before displaying submenu
 * options when moving the mouse over options that contain submenus, like the
 * "Cell Properties" entry for tables.
 * @type Number
 * @default 400
 * @example
 * // Remove the submenu delay.
 * config.menu_subMenuDelay = 0;
 */

/**
 * A comma separated list of items group names to be displayed in the context
 * menu. The order of items will reflect the order specified in this list if
 * no priority was defined in the groups.
 * @type String
 * @default 'clipboard,form,tablecell,tablecellproperties,tablerow,tablecolumn,table,anchor,link,image,flash,checkbox,radio,textfield,hiddenfield,imagebutton,button,select,textarea'
 * @example
 * config.menu_groups = 'clipboard,table,anchor,link,image';
 */
CKEDITOR.config.menu_groups =
	'clipboard,' +
	'form,' +
	'tablecell,tablecellproperties,tablerow,tablecolumn,table,'+
	'anchor,link,image,flash,' +
	'checkbox,radio,textfield,hiddenfield,imagebutton,button,select,textarea,div';
