Graphics.UI.Gtk.Entry.Entry

A single line text entry field

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.

entryNewWithBuffer :: EntryBufferClass buffer => buffer -> IO Entry

Creates a new Entry widget backed by a particular EntryBuffer. One buffer can be shared among many widgets.

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.

Removed in Gtk3.

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.

Removed in Gtk3.

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. Removed in Gtk3.

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. Removed in Gtk3.

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

The buffer being displayed.

Signals

entryActivated :: 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.

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

Deprecated. See entryActivated.

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.