gtk4/org.gtkkn.bindings.gtk/AppChooserButton

AppChooserButton

open class AppChooserButton( val gtkAppChooserButtonPointer: <Error class: unknown class><<Error class: unknown class>>) : Widget, AppChooser(source)

⚠️ Deprecated ⚠️

This is deprecated since version 4.10.

The application selection widgets should be implemented according to the design of each platform and/or application requiring them.

The GtkAppChooserButton lets the user select an application.

An example GtkAppChooserButton

Initially, a GtkAppChooserButton selects the first application in its list, which will either be the most-recently used application or, if property@Gtk.AppChooserButton:show-default-item is true, the default application.

The list of applications shown in a GtkAppChooserButton includes the recommended applications for the given content type. When property@Gtk.AppChooserButton:show-default-item is set, the default application is also included. To let the user chooser other applications, you can set the property@Gtk.AppChooserButton:show-dialog-item property, which allows to open a full class@Gtk.AppChooserDialog.

It is possible to add custom items to the list, using method@Gtk.AppChooserButton.append_custom_item. These items cause the signal@Gtk.AppChooserButton::custom-item-activated signal to be emitted when they are selected.

To track changes in the selected application, use the signal@Gtk.AppChooserButton::changed signal.

CSS nodes

GtkAppChooserButton has a single CSS node with the name “appchooserbutton”.

Skipped during bindings generation

method heading: Property TypeInfo of getter and setter do not match

Constructors

AppChooserButton

constructor(contentType: String)

This is deprecated since version 4.10.

constructor(gtkAppChooserButtonPointer: <Error class: unknown class><<Error class: unknown class>>)

Types

Companion

object Companion

Properties

accessibleRole

open val accessibleRole: AccessibleRole

The accessible role of the given GtkAccessible implementation.

canFocus

open var canFocus: Boolean

Whether the widget or any of its descendents can accept the input focus.

canTarget

open var canTarget: Boolean

Whether the widget can receive pointer events.

contentType

open val contentType: String

The content type of the GtkAppChooser object.

cssClasses

open var cssClasses: List<String>

A list of css classes applied to this widget.

cssName

open val cssName: String

The name of this widget in the CSS tree.

cursor

open var cursor: <Error class: unknown class>?

The cursor used by @widget.

focusable

open var focusable: Boolean

Whether this widget itself will accept the input focus.

focusOnClick

open var focusOnClick: Boolean

Whether the widget should grab focus when it is clicked with the mouse.

gtkAccessiblePointer

open override val gtkAccessiblePointer: <Error class: unknown class><<Error class: unknown class>>

gtkAppChooserButtonPointer

val gtkAppChooserButtonPointer: <Error class: unknown class><<Error class: unknown class>>

gtkAppChooserPointer

open override val gtkAppChooserPointer: <Error class: unknown class><<Error class: unknown class>>

gtkBuildablePointer

open override val gtkBuildablePointer: <Error class: unknown class><<Error class: unknown class>>

gtkConstraintTargetPointer

open override val gtkConstraintTargetPointer: <Error class: unknown class><<Error class: unknown class>>

gtkWidgetPointer

val gtkWidgetPointer: <Error class: unknown class><<Error class: unknown class>>

halign

open var halign: Align

How to distribute horizontal space if widget gets extra space.

hasTooltip

open var hasTooltip: Boolean

Enables or disables the emission of the ::query-tooltip signal on @widget.

hexpand

open var hexpand: Boolean

Whether to expand horizontally.

hexpandSet

open var hexpandSet: Boolean

Whether to use the hexpand property.

layoutManager

open var layoutManager: LayoutManager?

The GtkLayoutManager instance to use to compute the preferred size of the widget, and allocate its children.

marginBottom

open var marginBottom: <Error class: unknown class>

Margin on bottom side of widget.

marginEnd

open var marginEnd: <Error class: unknown class>

Margin on end of widget, horizontally.

marginStart

open var marginStart: <Error class: unknown class>

Margin on start of widget, horizontally.

marginTop

open var marginTop: <Error class: unknown class>

Margin on top side of widget.

modal

open var modal: Boolean

Whether the app chooser dialog should be modal.

name

open var name: String

The name of the widget.

opacity

open var opacity: <Error class: unknown class>

The requested opacity of the widget.

overflow

open var overflow: Overflow

How content outside the widget's content area is treated.

parent

open val parent: Widget?

The parent widget of this widget.

receivesDefault

open var receivesDefault: Boolean

Whether the widget will receive the default action when it is focused.

root

open val root: Root?

The GtkRoot widget of the widget tree containing this widget.

scaleFactor

open val scaleFactor: <Error class: unknown class>

The scale factor of the widget.

showDefaultItem

open var showDefaultItem: Boolean

Determines whether the dropdown menu shows the default application on top for the provided content type.

showDialogItem

open var showDialogItem: Boolean

Determines whether the dropdown menu shows an item to open a GtkAppChooserDialog.

tooltipMarkup

open var tooltipMarkup: String?

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

tooltipText

open var tooltipText: String?

Sets the text of tooltip to be the given string.

valign

open var valign: Align

How to distribute vertical space if widget gets extra space.

vexpand

open var vexpand: Boolean

Whether to expand vertically.

vexpandSet

open var vexpandSet: Boolean

Whether to use the vexpand property.

Functions

actionSetEnabled

open fun actionSetEnabled(actionName: String, enabled: Boolean)

Enable or disable an action installed with gtk_widget_class_install_action().

activateActionIfExists

open fun activateActionIfExists(name: String, args: <Error class: unknown class>? = null): Boolean

Looks up the action in the action groups associated with

activateDefault

open fun activateDefault()

Activates the default.activate action from @widget.

activateWidget

open fun activateWidget(): Boolean

For widgets that can be “activated” (buttons, menu items, etc.), this function activates them.

addController

open fun addController(controller: EventController)

Adds @controller to @widget so that it will receive events.

addCssClass

open fun addCssClass(cssClass: String)

Adds a style class to @widget.

addMnemonicLabel

open fun addMnemonicLabel(label: Widget)

Adds a widget to the list of mnemonic labels for this widget.

addTickCallback

open fun addTickCallback(callback: TickCallback): <Error class: unknown class>

Queues an animation frame update and adds a callback to be called before each frame.

allocate

open fun allocate( width: <Error class: unknown class>, height: <Error class: unknown class>, baseline: <Error class: unknown class>, transform: <Error class: unknown class>? = null)

This function is only used by GtkWidget subclasses, to assign a size, position and (optionally) baseline to their child widgets.

announce

open fun announce(message: String, priority: AccessibleAnnouncementPriority)

Requests the user's screen reader to announce the given message.

appendCustomItem

open fun appendCustomItem(name: String, label: String, icon: <Error class: unknown class>)

This is deprecated since version 4.10.

appendSeparator

open fun appendSeparator()

This is deprecated since version 4.10.

childFocus

open fun childFocus(direction: DirectionType): Boolean

Called by widgets as the user moves around the window using keyboard shortcuts.

computeBounds

open fun computeBounds(target: Widget, outBounds: <Error class: unknown class>): Boolean

Computes the bounds for @widget in the coordinate space of @target.

computeExpand

open fun computeExpand(orientation: Orientation): Boolean

Computes whether a container should give this widget extra space when possible.

computePoint

open fun computePoint(target: Widget, point: <Error class: unknown class>, outPoint: <Error class: unknown class>): Boolean

Translates the given @point in @widget's coordinates to coordinates relative to @target’s coordinate system.

computeTransform

open fun computeTransform(target: Widget, outTransform: <Error class: unknown class>): Boolean

Computes a matrix suitable to describe a transformation from

contains

open fun contains(x: <Error class: unknown class>, y: <Error class: unknown class>): Boolean

Tests if the point at (@x, @y) is contained in @widget.

createPangoContext

open fun createPangoContext(): <Error class: unknown class>

Creates a new PangoContext with the appropriate font map, font options, font description, and base direction for drawing text for this widget.

createPangoLayout

open fun createPangoLayout(text: String? = null): <Error class: unknown class>

Creates a new PangoLayout with the appropriate font map, font description, and base direction for drawing text for this widget.

disposeTemplate

open fun disposeTemplate(widgetType: <Error class: unknown class>)

Clears the template children for the given widget.

dragCheckThreshold

open fun dragCheckThreshold( startX: <Error class: unknown class>, startY: <Error class: unknown class>, currentX: <Error class: unknown class>, currentY: <Error class: unknown class>): Boolean

Checks to see if a drag movement has passed the GTK drag threshold.

emitActivate

fun emitActivate()

Emits the "activate" signal. See onActivate.

emitChanged

fun emitChanged()

Emits the "changed" signal. See onChanged.

emitCustomItemActivated

fun emitCustomItemActivated(detail: String? = null, itemName: String)

Emits the "custom-item-activated" signal. See onCustomItemActivated.

emitDestroy

fun emitDestroy()

Emits the "destroy" signal. See onDestroy.

emitDirectionChanged

fun emitDirectionChanged(previousDirection: TextDirection)

Emits the "direction-changed" signal. See onDirectionChanged.

emitHide

fun emitHide()

Emits the "hide" signal. See onHide.

emitMap

fun emitMap()

Emits the "map" signal. See onMap.

emitMoveFocus

fun emitMoveFocus(direction: DirectionType)

Emits the "move-focus" signal. See onMoveFocus.

emitRealize

fun emitRealize()

Emits the "realize" signal. See onRealize.

emitShow

fun emitShow()

Emits the "show" signal. See onShow.

emitStateFlagsChanged

fun emitStateFlagsChanged(flags: StateFlags)

Emits the "state-flags-changed" signal. See onStateFlagsChanged.

emitUnmap

fun emitUnmap()

Emits the "unmap" signal. See onUnmap.

emitUnrealize

fun emitUnrealize()

Emits the "unrealize" signal. See onUnrealize.

errorBell

open fun errorBell()

Notifies the user about an input-related error on this widget.

getAccessibleParent

open fun getAccessibleParent(): Accessible?

Retrieves the accessible parent for an accessible object.

getAccessibleRole

open fun getAccessibleRole(): AccessibleRole

Retrieves the accessible role of an accessible object.

getAllocatedBaseline

open fun getAllocatedBaseline(): <Error class: unknown class>

This is deprecated since version 4.12.

getAllocatedHeight

open fun getAllocatedHeight(): <Error class: unknown class>

This is deprecated since version 4.12.

getAllocatedWidth

open fun getAllocatedWidth(): <Error class: unknown class>

This is deprecated since version 4.12.

getAllocation

open fun getAllocation(allocation: <Error class: unknown class>)

This is deprecated since version 4.12.

getAncestor

open fun getAncestor(widgetType: <Error class: unknown class>): Widget?

Gets the first ancestor of @widget with type @widget_type.

getAppInfo

open fun getAppInfo(): <Error class: unknown class>?

This is deprecated since version 4.10.

getAtContext

open fun getAtContext(): AtContext

Retrieves the accessible implementation for the given GtkAccessible.

getBaseline

open fun getBaseline(): <Error class: unknown class>

Returns the baseline that has currently been allocated to @widget.

getBuildableId

open fun getBuildableId(): String?

Gets the ID of the @buildable object.

getChildVisible

open fun getChildVisible(): Boolean

Gets the value set with gtk_widget_set_child_visible().

getClipboard

open fun getClipboard(): <Error class: unknown class>

Gets the clipboard object for @widget.

getColor

open fun getColor(color: <Error class: unknown class>)

Gets the current foreground color for the widget’s CSS style.

getContentType

open fun getContentType(): String

This is deprecated since version 4.10.

getDirection

open fun getDirection(): TextDirection

Gets the reading direction for a particular widget.

getDisplay

open fun getDisplay(): <Error class: unknown class>

Get the GdkDisplay for the toplevel window associated with this widget.

getFirstAccessibleChild

open fun getFirstAccessibleChild(): Accessible?

Retrieves the first accessible child of an accessible object.

getFirstChild

open fun getFirstChild(): Widget?

Returns the widget’s first child.

getFocusChild

open fun getFocusChild(): Widget?

Returns the current focus child of @widget.

getFontMap

open fun getFontMap(): <Error class: unknown class>?

Gets the font map of @widget.

getFontOptions

open fun getFontOptions(): <Error class: unknown class>?

This is deprecated since version 4.16.

---

getFrameClock

open fun getFrameClock(): <Error class: unknown class>?

Obtains the frame clock for a widget.

getHeading

open fun getHeading(): String?

This is deprecated since version 4.10.

getHeight

open fun getHeight(): <Error class: unknown class>

Returns the content height of the widget.

getLastChild

open fun getLastChild(): Widget?

Returns the widget’s last child.

getMapped

open fun getMapped(): Boolean

Whether the widget is mapped.

getNative

open fun getNative(): Native?

Returns the nearest GtkNative ancestor of @widget.

getNextAccessibleSibling

open fun getNextAccessibleSibling(): Accessible?

Retrieves the next accessible sibling of an accessible object

getNextSibling

open fun getNextSibling(): Widget?

Returns the widget’s next sibling.

getPangoContext

open fun getPangoContext(): <Error class: unknown class>

Gets a PangoContext with the appropriate font map, font description, and base direction for this widget.

getPlatformState

open fun getPlatformState(state: AccessiblePlatformState): Boolean

Query a platform state, such as focus.

getPreferredSize

open fun getPreferredSize(minimumSize: Requisition?, naturalSize: Requisition?)

Retrieves the minimum and natural size of a widget, taking into account the widget’s preference for height-for-width management.

getPrevSibling

open fun getPrevSibling(): Widget?

Returns the widget’s previous sibling.

getPrimaryClipboard

open fun getPrimaryClipboard(): <Error class: unknown class>

Gets the primary clipboard of @widget.

getRealized

open fun getRealized(): Boolean

Determines whether @widget is realized.

getRequestMode

open fun getRequestMode(): SizeRequestMode

Gets whether the widget prefers a height-for-width layout or a width-for-height layout.

getSensitive

open fun getSensitive(): Boolean

Returns the widget’s sensitivity.

getSettings

open fun getSettings(): Settings

Gets the settings object holding the settings used for this widget.

getSize

open fun getSize(orientation: Orientation): <Error class: unknown class>

Returns the content width or height of the widget.

getStateFlags

open fun getStateFlags(): StateFlags

Returns the widget state as a flag set.

getStyleContext

open fun getStyleContext(): StyleContext

This is deprecated since version 4.10.

getTemplateChild

open fun getTemplateChild(widgetType: <Error class: unknown class>, name: String): <Error class: unknown class>

Fetch an object build from the template XML for @widget_type in this @widget instance.

getVisible

open fun getVisible(): Boolean

Determines whether the widget is visible.

getWidth

open fun getWidth(): <Error class: unknown class>

Returns the content width of the widget.

grabFocus

open fun grabFocus(): Boolean

Causes @widget to have the keyboard focus for the GtkWindow it's inside.

hasCssClass

open fun hasCssClass(cssClass: String): Boolean

Returns whether @css_class is currently applied to @widget.

hasDefault

open fun hasDefault(): Boolean

Determines whether @widget is the current default widget within its toplevel.

hasFocus

open fun hasFocus(): Boolean

Determines if the widget has the global input focus.

hasVisibleFocus

open fun hasVisibleFocus(): Boolean

Determines if the widget should show a visible indication that it has the global input focus.

hide

open fun hide()

This is deprecated since version 4.10.

inDestruction

open fun inDestruction(): Boolean

Returns whether the widget is currently being destroyed.

initTemplate

open fun initTemplate()

Creates and initializes child widgets defined in templates.

insertActionGroup

open fun insertActionGroup(name: String, group: <Error class: unknown class>? = null)

Inserts @group into @widget.

insertAfter

open fun insertAfter(parent: Widget, previousSibling: Widget? = null)

Inserts @widget into the child widget list of @parent.

insertBefore

open fun insertBefore(parent: Widget, nextSibling: Widget? = null)

Inserts @widget into the child widget list of @parent.

isAncestor

open fun isAncestor(ancestor: Widget): Boolean

Determines whether @widget is somewhere inside @ancestor, possibly with intermediate containers.

isDrawable

open fun isDrawable(): Boolean

Determines whether @widget can be drawn to.

isFocus

open fun isFocus(): Boolean

Determines if the widget is the focus widget within its toplevel.

isSensitive

open fun isSensitive(): Boolean

Returns the widget’s effective sensitivity.

isVisible

open fun isVisible(): Boolean

Determines whether the widget and all its parents are marked as visible.

keynavFailed

open fun keynavFailed(direction: DirectionType): Boolean

Emits the ::keynav-failed signal on the widget.

listMnemonicLabels

open fun listMnemonicLabels(): <Error class: unknown class>

Returns the widgets for which this widget is the target of a mnemonic.

map

open fun map()

Causes a widget to be mapped if it isn’t already.

mnemonicActivate

open fun mnemonicActivate(groupCycling: Boolean): Boolean

Emits the ::mnemonic-activate signal.

observeChildren

open fun observeChildren(): <Error class: unknown class>

Returns a GListModel to track the children of @widget.

observeControllers

open fun observeControllers(): <Error class: unknown class>

Returns a GListModel to track the class@Gtk.EventControllers of @widget.

onActivate

fun onActivate(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted to when the button is activated.

onChanged

fun onChanged(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when the active application changes.

onCustomItemActivated

fun onCustomItemActivated( connectFlags: <Error class: unknown class> = ConnectFlags(0u), detail: String? = null, handler: (itemName: String) -> Unit): <Error class: unknown class>

Emitted when a custom item is activated.

onDestroy

fun onDestroy(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Signals that all holders of a reference to the widget should release the reference that they hold.

onDirectionChanged

fun onDirectionChanged( connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (previousDirection: TextDirection) -> Unit): <Error class: unknown class>

Emitted when the text direction of a widget changes.

onHide

fun onHide(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when @widget is hidden.

onKeynavFailed

fun onKeynavFailed( connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (direction: DirectionType) -> Boolean): <Error class: unknown class>

Emitted if keyboard navigation fails.

onMap

fun onMap(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when @widget is going to be mapped.

onMnemonicActivate

fun onMnemonicActivate( connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (groupCycling: Boolean) -> Boolean): <Error class: unknown class>

Emitted when a widget is activated via a mnemonic.

onMoveFocus

fun onMoveFocus( connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (direction: DirectionType) -> Unit): <Error class: unknown class>

Emitted when the focus is moved.

onQueryTooltip

fun onQueryTooltip( connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>, <Error class: unknown class>, keyboardMode: Boolean, tooltip: Tooltip) -> Boolean): <Error class: unknown class>

Emitted when the widget’s tooltip is about to be shown.

onRealize

fun onRealize(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when @widget is associated with a GdkSurface.

onShow

fun onShow(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when @widget is shown.

onStateFlagsChanged

fun onStateFlagsChanged( connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (flags: StateFlags) -> Unit): <Error class: unknown class>

Emitted when the widget state changes.

onUnmap

fun onUnmap(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when @widget is going to be unmapped.

onUnrealize

fun onUnrealize(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: () -> Unit): <Error class: unknown class>

Emitted when the GdkSurface associated with @widget is destroyed.

pick

open fun pick(x: <Error class: unknown class>, y: <Error class: unknown class>, flags: PickFlags): Widget?

Finds the descendant of @widget closest to the point (@x, @y).

queueAllocate

open fun queueAllocate()

Flags the widget for a rerun of the vfunc@Gtk.Widget.size_allocate function.

queueDraw

open fun queueDraw()

Schedules this widget to be redrawn in the paint phase of the current or the next frame.

queueResize

open fun queueResize()

Flags a widget to have its size renegotiated.

realize

open fun realize()

Creates the GDK resources associated with a widget.

refresh

open fun refresh()

This is deprecated since version 4.10.

removeController

open fun removeController(controller: EventController)

Removes @controller from @widget, so that it doesn't process events anymore.

removeCssClass

open fun removeCssClass(cssClass: String)

Removes a style from @widget.

removeMnemonicLabel

open fun removeMnemonicLabel(label: Widget)

Removes a widget from the list of mnemonic labels for this widget.

removeTickCallback

open fun removeTickCallback(id: <Error class: unknown class>)

Removes a tick callback previously registered with gtk_widget_add_tick_callback().

resetProperty

open fun resetProperty(property: AccessibleProperty)

Resets the accessible @property to its default value.

resetRelation

open fun resetRelation(relation: AccessibleRelation)

Resets the accessible @relation to its default value.

resetState

open fun resetState(state: AccessibleState)

Resets the accessible @state to its default value.

setAccessibleParent

open fun setAccessibleParent(parent: Accessible? = null, nextSibling: Accessible? = null)

Sets the parent and sibling of an accessible object.

setActiveCustomItem

open fun setActiveCustomItem(name: String)

This is deprecated since version 4.10.

setChildVisible

open fun setChildVisible(childVisible: Boolean)

Sets whether @widget should be mapped along with its parent.

setCursorFromName

open fun setCursorFromName(name: String? = null)

Sets a named cursor to be shown when pointer devices point towards @widget.

setDirection

open fun setDirection(dir: TextDirection)

Sets the reading direction on a particular widget.

setFocusChild

open fun setFocusChild(child: Widget? = null)

Set @child as the current focus child of @widget.

setFontMap

open fun setFontMap(fontMap: <Error class: unknown class>? = null)

Sets the font map to use for Pango rendering.

setFontOptions

open fun setFontOptions(options: <Error class: unknown class>? = null)

This is deprecated since version 4.16.

---

setHeading

open fun setHeading(heading: String)

This is deprecated since version 4.10.

setMargins

fun Widget.setMargins(all: Int)

Set all margins to the same value.

fun Widget.setMargins(horizontal: Int = 0, vertical: Int = 0)

Set start and end margin to horizontal and top and bottom margin to vertical

fun Widget.setMargins(start: Int = 0, top: Int = 0, end: Int = 0, bottom: Int = 0)

Set margins.

setParent

open fun setParent(parent: Widget)

Sets @parent as the parent widget of @widget.

setSensitive

open fun setSensitive(sensitive: Boolean)

Sets the sensitivity of a widget.

setSizeRequest

open fun setSizeRequest(width: <Error class: unknown class>, height: <Error class: unknown class>)

Sets the minimum size of a widget.

setStateFlags

open fun setStateFlags(flags: StateFlags, clear: Boolean)

Turns on flag values in the current widget state.

setVisible

open fun setVisible(visible: Boolean)

Sets the visibility state of @widget.

shouldLayout

open fun shouldLayout(): Boolean

Returns whether @widget should contribute to the measuring and allocation of its parent.

show

open fun show()

This is deprecated since version 4.10.

sizeAllocate

open fun sizeAllocate(allocation: <Error class: unknown class>, baseline: <Error class: unknown class>)

Allocates widget with a transformation that translates the origin to the position in @allocation.

snapshotChild

open fun snapshotChild(child: Widget, snapshot: Snapshot)

Snapshot the a child of @widget.

triggerTooltipQuery

open fun triggerTooltipQuery()

Triggers a tooltip query on the display where the toplevel of @widget is located.

unmap

open fun unmap()

Causes a widget to be unmapped if it’s currently mapped.

unparent

open fun unparent()

Dissociate @widget from its parent.

unrealize

open fun unrealize()

Causes a widget to be unrealized (frees all GDK resources associated with the widget).

unsetStateFlags

open fun unsetStateFlags(flags: StateFlags)

Turns off flag values for the current widget state.

updateNextAccessibleSibling

open fun updateNextAccessibleSibling(newSibling: Accessible? = null)

Updates the next accessible sibling of @self.