Graphics.UI.Gtk.Entry.Entry

gtk-0.12.4: Binding to the Gtk+ graphical user interface library.

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net
Safe Haskell | None

Graphics.UI.Gtk.Entry.Entry

Contents

- Detail
- Class Hierarchy
- Types
- Constructors
- Methods
- Attributes
- Signals
- Deprecated

Description

A single line text entry field

Synopsis

- data Entry
- class WidgetClass o => EntryClass o
- castToEntry :: GObjectClass obj => obj -> Entry
- gTypeEntry :: GType
- toEntry :: EntryClass o => o -> Entry
- entryNew :: IO Entry
- entrySetText :: EntryClass self => self -> String -> IO ()
- entryGetText :: EntryClass self => self -> IO String
- entryAppendText :: EntryClass self => self -> String -> IO ()
- entryPrependText :: EntryClass self => self -> String -> IO ()
- entrySetVisibility :: EntryClass self => self -> Bool -> IO ()
- entryGetVisibility :: EntryClass self => self -> IO Bool
- entrySetInvisibleChar :: EntryClass self => self -> Char -> IO ()
- entryGetInvisibleChar :: EntryClass self => self -> IO Char
- entrySetMaxLength :: EntryClass self => self -> Int -> IO ()
- entryGetMaxLength :: EntryClass self => self -> IO Int
- entryGetActivatesDefault :: EntryClass self => self -> IO Bool
- entrySetActivatesDefault :: EntryClass self => self -> Bool -> IO ()
- entryGetHasFrame :: EntryClass self => self -> IO Bool
- entrySetHasFrame :: EntryClass self => self -> Bool -> IO ()
- entryGetWidthChars :: EntryClass self => self -> IO Int
- entrySetWidthChars :: EntryClass self => self -> Int -> IO ()
- entrySetAlignment :: EntryClass self => self -> Float -> IO ()
- entryGetAlignment :: EntryClass self => self -> IO Float
- entrySetCompletion :: EntryClass self => self -> EntryCompletion -> IO ()
- entryGetCompletion :: EntryClass self => self -> IO EntryCompletion
- entryGetBuffer :: EntryClass self => self -> IO EntryBuffer
- entrySetBuffer :: (EntryClass self, EntryBufferClass buffer) => self -> buffer -> IO ()
- entryGetIconWindow :: EntryClass self => self -> EntryIconPosition -> IO DrawWindow
- entryGetTextWindow :: EntryClass self => self -> IO DrawWindow
- entryImContextFilterKeypress :: EntryClass self => self -> EventM EKey Bool
- entryResetImContext :: EntryClass self => self -> IO ()
- entryCursorPosition :: EntryClass self => ReadAttr self Int
- entrySelectionBound :: EntryClass self => ReadAttr self Int
- entryEditable :: EntryClass self => Attr self Bool
- entryMaxLength :: EntryClass self => Attr self Int
- entryVisibility :: EntryClass self => Attr self Bool
- entryHasFrame :: EntryClass self => Attr self Bool
- entryInvisibleChar :: EntryClass self => Attr self Char
- entryActivatesDefault :: EntryClass self => Attr self Bool
- entryWidthChars :: EntryClass self => Attr self Int
- entryScrollOffset :: EntryClass self => ReadAttr self Int
- entryText :: EntryClass self => Attr self String
- entryXalign :: EntryClass self => Attr self Float
- entryAlignment :: EntryClass self => Attr self Float
- entryCompletion :: EntryClass self => Attr self EntryCompletion
- entryBuffer :: (EntryClass self, EntryBufferClass buffer) => ReadWriteAttr self EntryBuffer buffer
- entryActivate :: EntryClass ec => Signal ec (IO ())
- entryBackspace :: EntryClass ec => Signal ec (IO ())
- entryCopyClipboard :: EntryClass ec => Signal ec (IO ())
- entryCutClipboard :: EntryClass ec => Signal ec (IO ())
- entryPasteClipboard :: EntryClass ec => Signal ec (IO ())
- entryDeleteFromCursor :: EntryClass ec => Signal ec (DeleteType -> Int -> IO ())
- entryInsertAtCursor :: EntryClass ec => Signal ec (String -> IO ())
- entryMoveCursor :: EntryClass ec => Signal ec (MovementStep -> Int -> Bool -> IO ())
- entryPopulatePopup :: EntryClass ec => Signal ec (Menu -> IO ())
- entryToggleOverwirte :: EntryClass ec => Signal ec (IO ())
- entryPreeditChanged :: EntryClass ec => Signal ec (String -> IO ())
- entryIconPress :: EntryClass ec => Signal ec (EntryIconPosition -> EventM EButton ())
- entryIconRelease :: EntryClass ec => Signal ec (EntryIconPosition -> EventM EButton ())
- onEntryActivate :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- afterEntryActivate :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- onCopyClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- afterCopyClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- onCutClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- afterCutClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- onPasteClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- afterPasteClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- onToggleOverwrite :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)
- afterToggleOverwrite :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

# Detail

The `Entry` widget is a single line text entry widget. A fairly large set of key bindings are supported by default. If the entered text is longer than the allocation of the widget, the widget will scroll so that the cursor position is visible.

# Class Hierarchy

     | GObject
     | +----Object
     | +----Widget
     | +----Entry
     | +----SpinButton

# Types

data Entry

Instances

Eq Entry |
Ord Entry |
GObjectClass Entry |
EditableClass Entry |
EntryClass Entry |
WidgetClass Entry |
ObjectClass Entry |

class WidgetClass o => EntryClass o

Instances

EntryClass SpinButton |
EntryClass Entry |

castToEntry :: GObjectClass obj => obj -> Entry

gTypeEntry :: GType

toEntry :: EntryClass o => o -> Entry

# Constructors

entryNew :: IO Entry

Creates a new `Entry` widget.

# Methods

entrySetText :: EntryClass self => self -> String -> IO ()

Sets the text in the widget to the given value, replacing the current contents.

entryGetText :: EntryClass self => self -> IO String

Retrieves the contents of the entry widget. See also `editableGetChars`.

entryAppendText :: EntryClass self => self -> String -> IO ()

Appends the given text to the contents of the widget.

- Warning: this function is deprecated and should not be used in newly-written code.

entryPrependText :: EntryClass self => self -> String -> IO ()

Prepends the given text to the contents of the widget.

- Warning: this function is deprecated and should not be used in newly-written code.

entrySetVisibility

Arguments

:: EntryClass self |
=> self |
-> Bool | `visible` - `True` if the contents of the entry are displayed as plaintext.
-> IO () |

Sets whether the contents of the entry are visible or not. When visibility is set to `False`, characters are displayed as the invisible char, and will also appear that way when the text in the entry widget is copied elsewhere.

The default invisible char is the asterisk '*', but it can be changed with `entrySetInvisibleChar`.

entryGetVisibility

Arguments

:: EntryClass self |
=> self |
-> IO Bool | returns `True` if the text is currently visible

Retrieves whether the text in `entry` is visible. See `entrySetVisibility`.

entrySetInvisibleChar :: EntryClass self => self -> Char -> IO ()

Sets the character to use in place of the actual text when `entrySetVisibility` has been called to set text visibility to `False`. i.e. this is the character used in "password mode" to show the user how many characters have been typed. The default invisible char is an asterisk ('*'). If you set the invisible char to `'\0'`, then the user will get no feedback at all; there will be no text on the screen as they type.

entryGetInvisibleChar

Arguments

:: EntryClass self |
=> self |
-> IO Char | returns the current invisible char, or `'\0'`, if the entry does not show invisible text at all.

Retrieves the character displayed in place of the real characters for entries with visisbility set to false. See `entrySetInvisibleChar`.

entrySetMaxLength

Arguments

:: EntryClass self |
=> self |
-> Int | `max` - the maximum length of the entry, or 0 for no maximum. (other than the maximum length of entries.) The value passed in will be clamped to the range 0-65536.
-> IO () |

Sets the maximum allowed length of the contents of the widget. If the current contents are longer than the given length, then they will be truncated to fit.

entryGetMaxLength

Arguments

:: EntryClass self |
=> self |
-> IO Int | returns the maximum allowed number of characters in `Entry`, or 0 if there is no maximum.

Retrieves the maximum allowed length of the text in `entry`. See `entrySetMaxLength`.

entryGetActivatesDefault

Arguments

:: EntryClass self |
=> self |
-> IO Bool | returns `True` if the entry will activate the default widget

Query whether pressing return will activate the default widget.

entrySetActivatesDefault

Arguments

:: EntryClass self |
=> self |
-> Bool | `setting` - `True` to activate window's default widget on Enter keypress
-> IO () |

If `setting` is `True`, pressing Enter in the `entry` will activate the default widget for the window containing the entry. This usually means that the dialog box containing the entry will be closed, since the default widget is usually one of the dialog buttons.

(For experts: if `setting` is `True`, the entry calls `windowActivateDefault` on the window containing the entry, in the default handler for the "activate" signal.)

This setting is useful in `Dialog` boxes where enter should press the default button.

entryGetHasFrame

Arguments

:: EntryClass self |
=> self |
-> IO Bool | returns whether the entry has a beveled frame

Query if the text `Entry` is displayed with a frame around it.

entrySetHasFrame :: EntryClass self => self -> Bool -> IO ()

Sets whether the entry has a beveled frame around it.

entryGetWidthChars

Arguments

:: EntryClass self |
=> self |
-> IO Int | returns number of chars to request space for, or negative if unset

Gets the value set by `entrySetWidthChars`.

entrySetWidthChars

Arguments

:: EntryClass self |
=> self |
-> Int | `nChars` - width in chars
-> IO () |

Changes the size request of the entry to be about the right size for `nChars` characters. Note that it changes the size request, the size can still be affected by how you pack the widget into containers. If `nChars` is -1, the size reverts to the default entry size.

This setting is only considered when the widget formulates its size request. Make sure that it is not mapped (shown) before you change this value.

entrySetAlignment

Arguments

:: EntryClass self |
=> self |
-> Float | `xalign` - The horizontal alignment, from 0 (left) to 1 (right). Reversed for RTL layouts
-> IO () |

Sets the alignment for the contents of the entry. This controls the horizontal positioning of the contents when the displayed text is shorter than the width of the entry.

- Available since Gtk version 2.4

entryGetAlignment

Arguments

:: EntryClass self |
=> self |
-> IO Float | returns the alignment

Gets the value set by `entrySetAlignment`.

- Available since Gtk version 2.4

entrySetCompletion :: EntryClass self => self -> EntryCompletion -> IO ()

Sets the auxiliary completion object to use with the entry. All further configuration of the completion mechanism is done on completion using the `EntryCompletion` API.

- Available since Gtk version 2.4

entryGetCompletion

Arguments

:: EntryClass self |
=> self |
-> IO EntryCompletion | returns The auxiliary completion object currently in use by `entry`.

Returns the auxiliary completion object currently in use by the entry.

- Available since Gtk version 2.4

entryGetBuffer :: EntryClass self => self -> IO EntryBuffer

Get the `EntryBuffer` object which holds the text for this widget.

entrySetBuffer :: (EntryClass self, EntryBufferClass buffer) => self -> buffer -> IO ()

Set the `EntryBuffer` object which holds the text for this widget.

entryGetIconWindow

Arguments

:: EntryClass self |
=> self |
-> EntryIconPosition | `iconPos` Icon position
-> IO DrawWindow | returns the entry's icon window at `iconPos`.

Returns the `Window` which contains the entry's icon at `iconPos`. This function is useful when drawing something to the entry in an `eventExpose` callback because it enables the callback to distinguish between the text window and entry's icon windows.

See also `entryGetTextWindow`.

entryGetTextWindow

Arguments

:: EntryClass self |
=> self |
-> IO DrawWindow | returns the entry's text window.

Returns the `Window` which contains the text. This function is useful when drawing something to the entry in an `eventExpose` callback because it enables the callback to distinguish between the text window and entry's icon windows.

See also `entryGetIconWindow`.

entryImContextFilterKeypress :: EntryClass self => self -> EventM EKey Bool

Allow the `Entry` input method to internally handle key press and release events. If this function returns `True`, then no further processing should be done for this key event. See `imContextFilterKeypress`.

Note that you are expected to call this function from your handler when overriding key event handling. This is needed in the case when you need to insert your own key handling between the input method and the default key event handling of the `Entry`. See `textViewResetImContext` for an example of use.

- Available since Gtk+ version 2.22

entryResetImContext :: EntryClass self => self -> IO ()

Reset the input method context of the entry if needed.

This can be necessary in the case where modifying the buffer would confuse on-going input method behavior.

- Available since Gtk+ version 2.22

# Attributes

entryCursorPosition :: EntryClass self => ReadAttr self Int

The current position of the insertion cursor in chars.

Allowed values: [0,65535]

Default value: 0

entrySelectionBound :: EntryClass self => ReadAttr self Int

The position of the opposite end of the selection from the cursor in chars.

Allowed values: [0,65535]

Default value: 0

entryEditable :: EntryClass self => Attr self Bool

Whether the entry contents can be edited.

Default value: `True`

entryMaxLength :: EntryClass self => Attr self Int

Maximum number of characters for this entry. Zero if no maximum.

Allowed values: [0,65535]

Default value: 0

entryVisibility :: EntryClass self => Attr self Bool

`False` displays the "invisible char" instead of the actual text (password mode).

Default value: `True`

entryHasFrame :: EntryClass self => Attr self Bool

`False` removes outside bevel from entry.

Default value: `True`

entryInvisibleChar :: EntryClass self => Attr self Char

The character to use when masking entry contents (in "password mode").

Default value: '*'

entryActivatesDefault :: EntryClass self => Attr self Bool

Whether to activate the default widget (such as the default button in a dialog) when Enter is pressed.

Default value: `False`

entryWidthChars :: EntryClass self => Attr self Int

Number of characters to leave space for in the entry.

Allowed values: >= -1

Default value: -1

entryScrollOffset :: EntryClass self => ReadAttr self Int

Number of pixels of the entry scrolled off the screen to the left.

Allowed values: >= 0

Default value: 0

entryText :: EntryClass self => Attr self String

The contents of the entry.

Default value: ""

entryXalign :: EntryClass self => Attr self Float

The horizontal alignment, from 0 (left) to 1 (right). Reversed for RTL layouts.

Allowed values: [0,1]

Default value: 0

entryAlignment :: EntryClass self => Attr self Float

'alignment' property. See `entryGetAlignment` and `entrySetAlignment`

entryCompletion :: EntryClass self => Attr self EntryCompletion

'completion' property. See `entryGetCompletion` and `entrySetCompletion`

entryBuffer :: (EntryClass self, EntryBufferClass buffer) => ReadWriteAttr self EntryBuffer buffer

# Signals

entryActivate :: EntryClass ec => Signal ec (IO ())

A keybinding signal which gets emitted when the user activates the entry.

Applications should not connect to it, but may emit it with `signalEmitByName` if they need to control activation programmatically.

entryBackspace :: EntryClass ec => Signal ec (IO ())

The `entryBackspace` signal is a keybinding signal which gets emitted when the user asks for it.

The default bindings for this signal are Backspace and Shift-Backspace.

entryCopyClipboard :: EntryClass ec => Signal ec (IO ())

The `entryCopyClipboard` signal is a keybinding signal which gets emitted to copy the selection to the clipboard.

The default bindings for this signal are Ctrl-c and Ctrl-Insert.

entryCutClipboard :: EntryClass ec => Signal ec (IO ())

The `entryCutClipboard` signal is a keybinding signal which gets emitted to cut the selection to the clipboard.

The default bindings for this signal are Ctrl-x and Shift-Delete.

entryPasteClipboard :: EntryClass ec => Signal ec (IO ())

The `entryPasteClipboard` signal is a keybinding signal which gets emitted to paste the contents of the clipboard into the text view.

The default bindings for this signal are Ctrl-v and Shift-Insert.

entryDeleteFromCursor :: EntryClass ec => Signal ec (DeleteType -> Int -> IO ())

The `entryDeleteFromCursor` signal is a keybinding signal which gets emitted when the user initiates a text deletion.

If the type is `DeleteChars`, GTK+ deletes the selection if there is one, otherwise it deletes the requested number of characters.

The default bindings for this signal are Delete for deleting a character and Ctrl-Delete for deleting a word.

entryInsertAtCursor :: EntryClass ec => Signal ec (String -> IO ())

The `entryInsertAtCursor` signal is a keybinding signal which gets emitted when the user initiates the insertion of a fixed string at the cursor.

entryMoveCursor :: EntryClass ec => Signal ec (MovementStep -> Int -> Bool -> IO ())

The `entryMoveCursor` signal is a keybinding signal which gets emitted when the user initiates a cursor movement. If the cursor is not visible in entry, this signal causes the viewport to be moved instead.

Applications should not connect to it, but may emit it with `signalEmitByName` if they need to control the cursor programmatically.

The default bindings for this signal come in two variants, the variant with the Shift modifier extends the selection, the variant without the Shift modifer does not. There are too many key combinations to list them all here.

- Arrow keys move by individual characters/lines * Ctrl-arrow key combinations move by words/paragraphs * Home/End keys move to the ends of the buffer

entryPopulatePopup :: EntryClass ec => Signal ec (Menu -> IO ())

The `entryPopulatePopup` signal gets emitted before showing the context menu of the entry.

If you need to add items to the context menu, connect to this signal and append your menuitems to the menu.

entryToggleOverwirte :: EntryClass ec => Signal ec (IO ())

The `entryToggleOverwrite` signal is a keybinding signal which gets emitted to toggle the overwrite mode of the entry.

The default bindings for this signal is Insert.

entryPreeditChanged :: EntryClass ec => Signal ec (String -> IO ())

If an input method is used, the typed text will not immediately be committed to the buffer. So if you are interested in the text, connect to this signal.

entryIconPress :: EntryClass ec => Signal ec (EntryIconPosition -> EventM EButton ())

The `iconPress` signal is emitted when an activatable icon is clicked.

entryIconRelease :: EntryClass ec => Signal ec (EntryIconPosition -> EventM EButton ())

The `iconRelease` signal is emitted on the button release from a mouse click over an activatable icon.

# Deprecated

onEntryActivate :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the user presses return within the `Entry` field.

afterEntryActivate :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the user presses return within the `Entry` field.

onCopyClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the current selection has been copied to the clipboard.

afterCopyClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the current selection has been copied to the clipboard.

onCutClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the current selection has been cut to the clipboard.

afterCutClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the current selection has been cut to the clipboard.

onPasteClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the current selection has been pasted from the clipboard.

afterPasteClipboard :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the current selection has been pasted from the clipboard.

onToggleOverwrite :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the user changes from overwriting to inserting.

afterToggleOverwrite :: EntryClass ec => ec -> IO () -> IO (ConnectId ec)

Emitted when the user changes from overwriting to inserting.