Maintainer	gtk2hs-users@lists.sourceforge.net
Stability	provisional
Portability	portable (depends on GHC)
Safe Haskell	None
Language	Haskell98

Graphics.UI.Gtk.Multiline.TextView

Contents

Detail
Class Hierarchy
Types
Constructors
Methods
Attributes
Signals

Description

Widget that displays a TextBuffer

Synopsis

Detail

You may wish to begin by reading the text widget conceptual overview which gives an overview of all the objects and data types related to the text widget and how they work together.

Throughout we distinguish between buffer coordinates which are pixels with the origin at the upper left corner of the first character on the first line. Window coordinates are relative to the top left pixel which is visible in the current TextView. Coordinates from Events are in the latter relation. The conversion can be done with textViewWindowToBufferCoords.

Class Hierarchy

| GObject
| +----Object
| +----Widget
| +----Container
| +----TextView
|
|
| GObject
| +----TextChildAnchor

Types

data TextView Source

Instances

Eq TextView
Ord TextView
GObjectClass TextView
TextViewClass TextView
ContainerClass TextView
WidgetClass TextView

class ContainerClass o => TextViewClass o Source

Instances

TextViewClass TextView

data TextChildAnchor Source

Instances

Eq TextChildAnchor
Ord TextChildAnchor
GObjectClass TextChildAnchor
TextChildAnchorClass TextChildAnchor

class GObjectClass o => TextChildAnchorClass o Source

Instances

TextChildAnchorClass TextChildAnchor

castToTextView :: GObjectClass obj => obj -> TextView Source

gTypeTextView :: GType Source

toTextView :: TextViewClass o => o -> TextView Source

data DeleteType Source

Editing option

Constructors

DeleteChars
DeleteWordEnds
DeleteWords
DeleteDisplayLines
DeleteDisplayLineEnds
DeleteParagraphEnds
DeleteParagraphs
DeleteWhitespace

Instances

Enum DeleteType
Eq DeleteType
Show DeleteType

data DirectionType Source

Editing direction

Constructors

DirTabForward
DirTabBackward
DirUp
DirDown
DirLeft
DirRight

Instances

Enum DirectionType
Eq DirectionType
Show DirectionType

data Justification Source

Justification for label and maybe other widgets (text?)

Constructors

JustifyLeft
JustifyRight
JustifyCenter
JustifyFill

Instances

Enum Justification
Eq Justification
Show Justification

data MovementStep Source

Movement in text widget

Constructors

MovementLogicalPositions
MovementVisualPositions
MovementWords
MovementDisplayLines
MovementDisplayLineEnds
MovementParagraphs
MovementParagraphEnds
MovementPages
MovementBufferEnds
MovementHorizontalPages

Instances

Enum MovementStep
Eq MovementStep
Show MovementStep

data TextWindowType Source

Constructors

TextWindowPrivate
TextWindowWidget
TextWindowText
TextWindowLeft
TextWindowRight
TextWindowTop
TextWindowBottom

Instances

Enum TextWindowType
Eq TextWindowType
Show TextWindowType

data WrapMode Source

Determine how lines are wrapped in a TextView.

Constructors

WrapNone
WrapChar
WrapWord
WrapWordChar

Instances

Enum WrapMode
Eq WrapMode
Show WrapMode

Constructors

textViewNew :: IO TextView Source

Creates a new TextView. If you don't call textViewSetBuffer before using the text view, an empty default buffer will be created for you. Get the buffer with textViewGetBuffer. If you want to specify your own buffer, consider textViewNewWithBuffer.

textViewNewWithBuffer :: TextBufferClass buffer => buffer -> IO TextView Source

Creates a new TextView widget displaying the buffer buffer. One buffer can be shared among many widgets.

Methods

textViewSetBuffer :: (TextViewClass self, TextBufferClass buffer) => self -> buffer -> IO () Source

Sets the given buffer as the buffer being displayed by the text view.

textViewGetBuffer :: TextViewClass self => self -> IO TextBuffer Source

Returns the TextBuffer being displayed by this text view.

textViewScrollToMark Source

Arguments

:: (TextViewClass self, TextMarkClass mark)
=> self
-> mark	`mark` - a `TextMark`
-> Double	`withinMargin` - margin as a [0.0,0.5) fraction of screen size and imposes an extra margin at all four sides of the window within which `xalign` and `yalign` are evaluated.
-> Maybe (Double, Double)	`Just (xalign, yalign)` - horizontal and vertical alignment of mark within visible area (if `Nothing`, scroll just enough to get the mark onscreen)
-> IO ()

Scrolls the text view so that mark is on the screen in the position indicated by xalign and yalign. An alignment of 0.0 indicates left or top, 1.0 indicates right or bottom, 0.5 means center. If the alignment is Nothing, the text scrolls the minimal distance to get the mark onscreen, possibly not scrolling at all. The effective screen for purposes of this function is reduced by a margin of size withinMargin.

textViewScrollToIter Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> Double	`withinMargin` - margin as a [0.0,0.5) fraction of screen size
-> Maybe (Double, Double)	`Just (xalign, yalign)` - horizontal and vertical alignment of mark within visible area (if `Nothing`, scroll just enough to get the iterator onscreen)
-> IO Bool	returns `True` if scrolling occurred

Scrolls the text view so that iter is on the screen in the position indicated by xalign and yalign. An alignment of 0.0 indicates left or top, 1.0 indicates right or bottom, 0.5 means center. If the alignment is Nothing, the text scrolls the minimal distance to get the mark onscreen, possibly not scrolling at all. The effective screen for purposes of this function is reduced by a margin of size withinMargin.

This function uses the currently-computed height of the lines in the text buffer. Note that line heights are computed in an idle handler; so this function may not have the desired effect if it's called before the height computations. To avoid oddness, consider using textViewScrollToMark which saves a point to be scrolled to after line validation. This is particularly important if you add new text to the buffer and immediately ask the view to scroll to it (which it can't since it is not updated until the main loop runs).

textViewScrollMarkOnscreen Source

Arguments

:: (TextViewClass self, TextMarkClass mark)
=> self
-> mark	`mark` - a mark in the buffer for the text view
-> IO ()

Scrolls the text view the minimum distance such that mark is contained within the visible area of the widget.

textViewMoveMarkOnscreen Source

Arguments

:: (TextViewClass self, TextMarkClass mark)
=> self
-> mark	`mark` - a `TextMark`
-> IO Bool	returns `True` if the mark moved (wasn't already onscreen)

Moves a mark within the buffer so that it's located within the currently-visible text area.

textViewPlaceCursorOnscreen Source

Arguments

:: TextViewClass self
=> self
-> IO Bool	returns `True` if the cursor had to be moved.

Moves the cursor to the currently visible region of the buffer, it it isn't there already.

textViewGetLineAtY Source

Arguments

:: TextViewClass self
=> self
-> Int	`y` - a y coordinate
-> IO (TextIter, Int)	`(targetIter, lineTop)` - returns the iter and the top coordinate of the line

Gets the TextIter at the start of the line containing the coordinate y. y is in buffer coordinates, convert from window coordinates with textViewWindowToBufferCoords. Also returns lineTop the coordinate of the top edge of the line.

textViewGetLineYrange Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> IO (Int, Int)	`(y, height)` - y coordinate and height of the line

Gets the y coordinate of the top of the line containing iter, and the height of the line. The coordinate is a buffer coordinate; convert to window coordinates with textViewBufferToWindowCoords.

textViewGetIterAtLocation Source

Arguments

:: TextViewClass self
=> self
-> Int	`x` - x position, in buffer coordinates
-> Int	`y` - y position, in buffer coordinates
-> IO TextIter

Retrieves the iterator at buffer coordinates x and y. Buffer coordinates are coordinates for the entire buffer, not just the currently-displayed portion. If you have coordinates from an event, you have to convert those to buffer coordinates with textViewWindowToBufferCoords.

textViewBufferToWindowCoords Source

Arguments

:: TextViewClass self
=> self
-> TextWindowType	`win` - a `TextWindowType` except `TextWindowPrivate`
-> (Int, Int)	`(bufferX, bufferY)` - buffer x and y coordinates
-> IO (Int, Int)	returns window x and y coordinates

Converts coordinate (bufferX, bufferY) to coordinates for the window win

Note that you can't convert coordinates for a nonexisting window (see textViewSetBorderWindowSize).

textViewWindowToBufferCoords Source

Arguments

:: TextViewClass self
=> self
-> TextWindowType	`win` - a `TextWindowType` except `TextWindowPrivate`
-> (Int, Int)	`(windowX, windowY)` - window x and y coordinates
-> IO (Int, Int)	returns buffer x and y coordinates

Converts coordinates on the window identified by win to buffer coordinates.

Note that you can't convert coordinates for a nonexisting window (see textViewSetBorderWindowSize).

textViewGetWindow Source

Arguments

:: TextViewClass self
=> self
-> TextWindowType	`win` - window to get
-> IO (Maybe DrawWindow)	returns a `DrawWindow`, or `Nothing`

Retrieves the DrawWindow corresponding to an area of the text view; possible windows include the overall widget window, child windows on the left, right, top, bottom, and the window that displays the text buffer. Windows are Nothing and nonexistent if their width or height is 0, and are nonexistent before the widget has been realized.

textViewGetWindowType :: TextViewClass self => self -> DrawWindow -> IO TextWindowType Source

Retrieve the type of window the TextView widget contains.

Usually used to find out which window an event corresponds to. An emission of an event signal of TextView yields a DrawWindow. This function can be used to see if the event actually belongs to the main text window.

textViewSetBorderWindowSize Source

Arguments

:: TextViewClass self
=> self
-> TextWindowType	`type` - window to affect
-> Int	`size` - width or height of the window
-> IO ()

Sets the width of TextWindowLeft or TextWindowRight, or the height of TextWindowTop or TextWindowBottom. Automatically destroys the corresponding window if the size is set to 0, and creates the window if the size is set to non-zero. This function can only be used for the "border windows", it doesn't work with TextWindowWidget, TextWindowText, or TextWindowPrivate.

textViewGetBorderWindowSize Source

Arguments

:: TextViewClass self
=> self
-> TextWindowType	`type` - window to return size from
-> IO Int	returns width of window

Gets the width of the specified border window. See textViewSetBorderWindowSize.

textViewForwardDisplayLine Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> IO Bool	returns `True` if `iter` was moved and is not on the end iterator

Moves the given iter forward by one display (wrapped) line. A display line is different from a paragraph. Paragraphs are separated by newlines or other paragraph separator characters. Display lines are created by line-wrapping a paragraph. If wrapping is turned off, display lines and paragraphs will be the same. Display lines are divided differently for each view, since they depend on the view's width; paragraphs are the same in all views, since they depend on the contents of the TextBuffer.

textViewBackwardDisplayLine Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> IO Bool	returns `True` if `iter` was moved and is not on the end iterator

Moves the given iter backward by one display (wrapped) line. A display line is different from a paragraph. Paragraphs are separated by newlines or other paragraph separator characters. Display lines are created by line-wrapping a paragraph. If wrapping is turned off, display lines and paragraphs will be the same. Display lines are divided differently for each view, since they depend on the view's width; paragraphs are the same in all views, since they depend on the contents of the TextBuffer.

textViewForwardDisplayLineEnd Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> IO Bool	returns `True` if `iter` was moved and is not on the end iterator

Moves the given iter forward to the next display line end. A display line is different from a paragraph. Paragraphs are separated by newlines or other paragraph separator characters. Display lines are created by line-wrapping a paragraph. If wrapping is turned off, display lines and paragraphs will be the same. Display lines are divided differently for each view, since they depend on the view's width; paragraphs are the same in all views, since they depend on the contents of the TextBuffer.

textViewBackwardDisplayLineStart Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> IO Bool	returns `True` if `iter` was moved and is not on the end iterator

Moves the given iter backward to the next display line start. A display line is different from a paragraph. Paragraphs are separated by newlines or other paragraph separator characters. Display lines are created by line-wrapping a paragraph. If wrapping is turned off, display lines and paragraphs will be the same. Display lines are divided differently for each view, since they depend on the view's width; paragraphs are the same in all views, since they depend on the contents of the TextBuffer.

textViewStartsDisplayLine Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> IO Bool	returns `True` if `iter` begins a wrapped line

Determines whether iter is at the start of a display line. See textViewForwardDisplayLine for an explanation of display lines vs. paragraphs.

textViewMoveVisually Source

Arguments

:: TextViewClass self
=> self
-> TextIter	`iter` - a `TextIter`
-> Int	`count` - number of characters to move (negative moves left, positive moves right)
-> IO Bool	returns `True` if `iter` moved and is not on the end iterator

Move the iterator a given number of characters visually, treating it as the strong cursor position. If count is positive, then the new strong cursor position will be count positions to the right of the old cursor position. If count is negative then the new strong cursor position will be count positions to the left of the old cursor position.

In the presence of bidirection text, the correspondence between logical and visual order will depend on the direction of the current run, and there may be jumps when the cursor is moved off of the end of a run.

textViewAddChildAtAnchor Source

Arguments

:: (TextViewClass self, WidgetClass child)
=> self
-> child	`child` - a `Widget`
-> TextChildAnchor	`anchor` - a `TextChildAnchor` in the `TextBuffer` for the text view
-> IO ()

Adds a child widget in the text buffer, at the given anchor.

textChildAnchorNew :: IO TextChildAnchor Source

Create a new TextChildAnchor.

Using textBufferCreateChildAnchor is usually simpler then executing this function and textBufferInsertChildAnchor.

textChildAnchorGetWidgets :: TextChildAnchor -> IO [Widget] Source

Retrieve all Widgets at this TextChildAnchor.

The widgets in the returned list need to be upcasted to what they were.

textChildAnchorGetDeleted :: TextChildAnchor -> IO Bool Source

Query if an anchor was deleted.

textViewAddChildInWindow Source

Arguments

:: (TextViewClass self, WidgetClass child)
=> self
-> child	`child` - a `Widget`
-> TextWindowType	`whichWindow` - which window the child should appear in
-> Int	`xpos` - X position of child in window coordinates
-> Int	`ypos` - Y position of child in window coordinates
-> IO ()

Adds a child at fixed coordinates in one of the text widget's windows. The window must have nonzero size (see textViewSetBorderWindowSize). Note that the child coordinates are given relative to the DrawWindow in question, and that these coordinates have no sane relationship to scrolling. When placing a child in TextWindowWidget, scrolling is irrelevant, the child floats above all scrollable areas. If you want the widget to move when the text view scrolls, use textViewAddChildAtAnchor instead.

textViewMoveChild Source

Arguments

:: (TextViewClass self, WidgetClass child)
=> self
-> child	`child` - child widget already added to the text view
-> Int	`xpos` - new X position in window coordinates
-> Int	`ypos` - new Y position in window coordinates
-> IO ()

Move a child widget within the TextView. This is really only apprpriate for "floating" child widgets added using textViewAddChildInWindow.

textViewSetWrapMode :: TextViewClass self => self -> WrapMode -> IO () Source

Sets the line wrapping for the view.

textViewGetWrapMode :: TextViewClass self => self -> IO WrapMode Source

Gets the line wrapping for the view.

textViewSetEditable :: TextViewClass self => self -> Bool -> IO () Source

Sets the default editability of the TextView. You can override this default setting with tags in the buffer, using the "editable" attribute of tags.

textViewGetEditable :: TextViewClass self => self -> IO Bool Source

Returns the default editability of the TextView. Tags in the buffer may override this setting for some ranges of text.

textViewSetCursorVisible :: TextViewClass self => self -> Bool -> IO () Source

Toggles whether the insertion point is displayed. A buffer with no editable text probably shouldn't have a visible cursor, so you may want to turn the cursor off.

textViewGetCursorVisible :: TextViewClass self => self -> IO Bool Source

Find out whether the cursor is being displayed.

textViewSetPixelsAboveLines :: TextViewClass self => self -> Int -> IO () Source

Sets the default number of blank pixels above paragraphs in the text view. Tags in the buffer for the text view may override the defaults.

Tags in the buffer may override this default.

textViewGetPixelsAboveLines :: TextViewClass self => self -> IO Int Source

Gets the default number of pixels to put above paragraphs.

textViewSetPixelsBelowLines :: TextViewClass self => self -> Int -> IO () Source

Sets the default number of pixels of blank space to put below paragraphs in the text view. May be overridden by tags applied to the text view's buffer.

textViewGetPixelsBelowLines :: TextViewClass self => self -> IO Int Source

Gets the default number of blank pixels below each paragraph.

textViewSetPixelsInsideWrap :: TextViewClass self => self -> Int -> IO () Source

Sets the default number of pixels of blank space to leave between display/wrapped lines within a paragraph. May be overridden by tags in the text view's buffer.

textViewGetPixelsInsideWrap :: TextViewClass self => self -> IO Int Source

Gets the default number of pixels of blank space between lines in a wrapped paragraph.

textViewSetJustification :: TextViewClass self => self -> Justification -> IO () Source

Sets the default justification of text in the text view. Tags in the view's buffer may override the default.

textViewGetJustification :: TextViewClass self => self -> IO Justification Source

Gets the default justification of paragraphs in the text view. Tags in the buffer may override the default.

textViewSetLeftMargin Source

Arguments

:: TextViewClass self
=> self
-> Int	`leftMargin` - left margin in pixels
-> IO ()

Sets the default left margin for text in the text view. Tags in the buffer may override the default.

textViewGetLeftMargin Source

Arguments

:: TextViewClass self
=> self
-> IO Int	returns left margin in pixels

Gets the default left margin size of paragraphs in the text view. Tags in the buffer may override the default.

textViewSetRightMargin Source

Arguments

:: TextViewClass self
=> self
-> Int	`rightMargin` - right margin in pixels
-> IO ()

Sets the default right margin for text in the text view. Tags in the buffer may override the default.

textViewGetRightMargin Source

Arguments

:: TextViewClass self
=> self
-> IO Int	returns right margin in pixels

Gets the default right margin for text in the text view. Tags in the buffer may override the default.

textViewSetIndent Source

Arguments

:: TextViewClass self
=> self
-> Int	`indent` - indentation in pixels (may be negative)
-> IO ()

Sets the default indentation for paragraphs in the text view. Tags in the buffer may override the default.

textViewGetIndent Source

Arguments

:: TextViewClass self
=> self
-> IO Int	returns number of pixels of indentation

Gets the default indentation of paragraphs in the text view. Tags in the view's buffer may override the default. The indentation may be negative.

textViewGetDefaultAttributes :: TextViewClass self => self -> IO TextAttributes Source

Obtains a copy of the default text attributes. These are the attributes used for text unless a tag overrides them. You'd typically pass the default attributes in to textIterGetAttributes in order to get the attributes in effect at a given text position.

textViewGetVisibleRect :: TextViewClass self => self -> IO Rectangle Source

Returns the currently-visible region of the buffer, in buffer coordinates. Convert to window coordinates with textViewBufferToWindowCoords.

textViewGetIterLocation :: TextViewClass self => self -> TextIter -> IO Rectangle Source

Gets a rectangle which roughly contains the character at iter. The rectangle position is in buffer coordinates; use textViewBufferToWindowCoords to convert these coordinates to coordinates for one of the windows in the text view.

textViewGetIterAtPosition Source

Arguments

:: TextViewClass self
=> self
-> Int	`x` - x position, in buffer coordinates
-> Int	`y` - y position, in buffer coordinates
-> IO (TextIter, Int)	`(iter, trailing)` - returns the iterator and an integer indicating where in the grapheme the user clicked. It will either be zero, or the number of characters in the grapheme. 0 represents the trailing edge of the grapheme.

Retrieves the iterator pointing to the character at buffer coordinates x and y. Buffer coordinates are coordinates for the entire buffer, not just the currently-displayed portion. If you have coordinates from an event, you have to convert those to buffer coordinates with textViewWindowToBufferCoords.

Note that this is different from textViewGetIterAtLocation, which returns cursor locations, i.e. positions between characters.

Available since Gtk+ version 2.6

textViewSetOverwrite Source

Arguments

:: TextViewClass self
=> self
-> Bool	`overwrite` - `True` to turn on overwrite mode, `False` to turn it off
-> IO ()

Changes the TextView overwrite mode.

Available since Gtk+ version 2.4

textViewGetOverwrite :: TextViewClass self => self -> IO Bool Source

Returns whether the TextView is in overwrite mode or not.

Available since Gtk+ version 2.4

textViewSetAcceptsTab Source

Arguments

:: TextViewClass self
=> self
-> Bool	`acceptsTab` - `True` if pressing the Tab key should insert a tab character, `False`, if pressing the Tab key should move the keyboard focus.
-> IO ()

Sets the behavior of the text widget when the Tab key is pressed. If acceptsTab is True a tab character is inserted. If acceptsTab is False the keyboard focus is moved to the next widget in the focus chain.

Available since Gtk+ version 2.4

textViewGetAcceptsTab Source

Arguments

:: TextViewClass self
=> self
-> IO Bool	returns `True` if pressing the Tab key inserts a tab character, `False` if pressing the Tab key moves the keyboard focus.

Returns whether pressing the Tab key inserts a tab characters. textViewSetAcceptsTab.

Available since Gtk+ version 2.4

textViewGetHadjustment :: TextViewClass self => self -> IO Adjustment Source

Gets the horizontal-scrolling Adjustment.

Available since Gtk+ version 2.22

textViewGetVadjustment :: TextViewClass self => self -> IO Adjustment Source

Gets the vertical-scrolling Adjustment.

Available since Gtk+ version 2.22

textViewImContextFilterKeypress :: TextViewClass self => self -> EventM EKey Bool Source

Allow the TextView 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 TextView.

Available since Gtk+ version 2.22

textViewResetImContext :: TextViewClass self => self -> IO () Source

Reset the input method context of the text view 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

textViewPixelsAboveLines :: TextViewClass self => Attr self Int Source

Pixels of blank space above paragraphs.

Allowed values: >= 0

Default value: 0

textViewPixelsBelowLines :: TextViewClass self => Attr self Int Source

Pixels of blank space below paragraphs.

Allowed values: >= 0

Default value: 0

textViewPixelsInsideWrap :: TextViewClass self => Attr self Int Source

Pixels of blank space between wrapped lines in a paragraph.

Allowed values: >= 0

Default value: 0

textViewEditable :: TextViewClass self => Attr self Bool Source

Whether the text can be modified by the user.

Default value: True

textViewImModule :: TextViewClass self => Attr self DefaultGlibString Source

Which IM (input method) module should be used for this entry. See GtkIMContext. Setting this to a non-empty value overrides the system-wide IM module setting. See the GtkSettings "gtk-im-module" property.

Default value: ""

textViewWrapMode :: TextViewClass self => Attr self WrapMode Source

Whether to wrap lines never, at word boundaries, or at character boundaries.

Default value: WrapNone

textViewJustification :: TextViewClass self => Attr self Justification Source

Left, right, or center justification.

Default value: JustifyLeft

textViewLeftMargin :: TextViewClass self => Attr self Int Source

Width of the left margin in pixels.

Allowed values: >= 0

Default value: 0

textViewRightMargin :: TextViewClass self => Attr self Int Source

Width of the right margin in pixels.

Allowed values: >= 0

Default value: 0

textViewIndent :: TextViewClass self => Attr self Int Source

Amount to indent the paragraph, in pixels.

Allowed values: >= 0

Default value: 0

textViewCursorVisible :: TextViewClass self => Attr self Bool Source

If the insertion cursor is shown.

Default value: True

textViewBuffer :: TextViewClass self => Attr self TextBuffer Source

The buffer which is displayed.

textViewOverwrite :: TextViewClass self => Attr self Bool Source

Whether entered text overwrites existing contents.

Default value: False

textViewAcceptsTab :: TextViewClass self => Attr self Bool Source

Whether Tab will result in a tab character being entered.

Default value: True

Signals

backspace :: TextViewClass self => Signal self (IO ()) Source

The backspace 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.

copyClipboard :: TextViewClass self => Signal self (IO ()) Source

Copying to the clipboard.

This signal is emitted when a selection is copied to the clipboard.
The action itself happens when the TextView processes this signal.

cutClipboard :: TextViewClass self => Signal self (IO ()) Source

Cutting to the clipboard.

This signal is emitted when a selection is cut out and copied to the clipboard. The action itself happens when the textview processed this request.

deleteFromCursor :: TextViewClass self => Signal self (DeleteType -> Int -> IO ()) Source

Deleting text.

The widget will remove the specified number of units in the text where the meaning of units depends on the kind of deletion.
The action itself happens when the TextView processes this signal.

insertAtCursor :: (TextViewClass self, GlibString string) => Signal self (string -> IO ()) Source

Inserting text.

The widget will insert the string into the text where the meaning of units depends on the kind of deletion.
The action itself happens when the TextView processes this signal.

moveCursor :: TextViewClass self => Signal self (MovementStep -> Int -> Bool -> IO ()) Source

Moving the cursor.

The signal specifies what kind and how many steps the cursor will do. The flag is set to True if this movement extends a selection.
The action itself happens when the TextView processes this signal.

moveViewport :: TextViewClass self => Signal self (ScrollStep -> Int -> IO ()) Source

The moveViewport signal is a keybinding signal which can be bound to key combinations to allow the user to move the viewport, i.e. change what part of the text view is visible in a containing scrolled window. There are no default bindings for this signal.

moveFocus :: TextViewClass self => Signal self (DirectionType -> IO ()) Source

Moving the focus.

The action itself happens when the TextView processes this signal.

pageHorizontally :: TextViewClass self => Signal self (Int -> Bool -> IO ()) Source

Page change signals.

The signal specifies how many pages the view should move up or down. The flag is set to True if this movement extends a selection.
The action itself happens when the TextView processes this signal.
Figure out why this signal is called horizontally, not vertically.

pasteClipboard :: TextViewClass self => Signal self (IO ()) Source

Pasting from the clipboard.

This signal is emitted when something is pasted from the clipboard.
The action itself happens when the TextView processes this signal.

populatePopup :: TextViewClass self => Signal self (Menu -> IO ()) Source

Add menu entries to context menus.

This signal is emitted if a context menu within the TextView is opened. This signal can be used to add application specific menu items to this popup.

selectAll :: TextViewClass self => Signal self (Bool -> IO ()) Source

Inserting an anchor.

This signal is emitted when anchor is inserted into the text.
The action itself happens when the TextView processes this signal.

setAnchor :: TextViewClass self => Signal self (IO ()) Source

The scroll-bars changed.

setTextViewScrollAdjustments :: TextViewClass self => Signal self (Adjustment -> Adjustment -> IO ()) Source

The setTextViewScrollAdjustments signal is a keybinding signal which gets emitted to toggle the visibility of the cursor. The default binding for this signal is F7.

toggleCursorVisible :: TextViewClass self => Signal self (IO ()) Source

The toggleCursorVisible signal is a keybinding signal which gets emitted to toggle the visibility of the cursor. The default binding for this signal is F7.

toggleOverwrite :: TextViewClass self => Signal self (IO ()) Source

Insert Overwrite mode has changed.

This signal is emitted when the TextView changes from inserting mode to overwriting mode and vice versa.
The action itself happens when the TextView processes this signal.

textViewPreeditChanged :: (TextViewClass self, GlibString string) => Signal self (string -> IO ()) Source

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.

This signal is only emitted if the text at the given position is actually editable.