Class EventControllerFocus

java.lang.Object

org.javagi.base.ProxyInstance

org.gnome.gobject.TypeInstance

org.gnome.gobject.GObject

org.gnome.gtk.EventController

org.gnome.gtk.EventControllerFocus

All Implemented Interfaces:

Proxy

@Generated("org.javagi.JavaGI")
public class EventControllerFocus
extends EventController

Tracks keyboard focus.

The event controller offers Gtk.EventControllerFocus::enter and Gtk.EventControllerFocus::leave signals, as well as Gtk.EventControllerFocus:is-focus and Gtk.EventControllerFocus:contains-focus properties which are updated to reflect focus changes inside the widget hierarchy that is rooted at the controllers widget.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EventControllerFocus.Builder<B extends EventControllerFocus.Builder<B>>	Inner class implementing a builder pattern to construct a GObject with properties.
static interface	EventControllerFocus.EnterCallback	Functional interface declaration of the EnterCallback callback.
static class	EventControllerFocus.EventControllerFocusClass
static interface	EventControllerFocus.LeaveCallback	Functional interface declaration of the LeaveCallback callback.

Nested classes/interfaces inherited from class EventController

EventController.EventController$Impl, EventController.EventControllerClass

Nested classes/interfaces inherited from class GObject

GObject.NotifyCallback, GObject.ObjectClass

Constructor Summary

Constructors

Constructor	Description
EventControllerFocus()	Create a new EventControllerFocus.
EventControllerFocus(MemorySegment address)	Create a EventControllerFocus instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
protected EventControllerFocus	asParent()	Return this instance as if it were its parent type.
static EventControllerFocus.Builder<? extends EventControllerFocus.Builder>	builder()	A EventControllerFocus.Builder object constructs a EventControllerFocus with the specified properties.
boolean	containsFocus()	Returns true if focus is within this EventControllerFocus or one of its children.
void	emitEnter()	Emits the "enter" signal.
void	emitLeave()	Emits the "leave" signal.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
static @Nullable Type	getType()	Get the GType of the EventControllerFocus class.
boolean	isFocus()	Returns true if focus is within self, but not one of its children.
SignalConnection<EventControllerFocus.EnterCallback>	onEnter(EventControllerFocus.EnterCallback handler)	Emitted whenever the focus enters into the widget or one of its descendents.
SignalConnection<EventControllerFocus.LeaveCallback>	onLeave(EventControllerFocus.LeaveCallback handler)	Emitted whenever the focus leaves the widget hierarchy that is rooted at the widget that the controller is attached to.

Methods inherited from class EventController

getCurrentEvent, getCurrentEventDevice, getCurrentEventState, getCurrentEventTime, getName, getPropagationLimit, getPropagationPhase, getWidget, reset, setName, setPropagationLimit, setPropagationPhase, setStaticName

Methods inherited from class GObject

addToggleRef, addWeakPointer, bindProperty, bindProperty, bindProperty, bindPropertyFull, bindPropertyFull, bindPropertyWithClosures, bindPropertyWithClosures, compatControl, connect, connect, connect, constructed, disconnect, dispatchPropertiesChanged, dispose, dupData, dupQdata, emit, emitNotify, finalize_, forceFloating, freezeNotify, get, getData, getProperty, getProperty, getProperty, getQdata, getv, interfaceFindProperty, interfaceInstallProperty, interfaceListProperties, isFloating, newInstance, newInstance, newv, notify, notify, notifyByPspec, onNotify, ref, refSink, removeToggleRef, removeWeakPointer, replaceData, replaceQdata, runDispose, set, setData, setDataFull, setProperty, setProperty, setProperty, setQdata, setQdataFull, setv, stealData, stealQdata, takeRef, thawNotify, unref, watchClosure, weakRef, weakUnref, withProperties

Methods inherited from class TypeInstance

callParent, callParent, cast, getPrivate, readGClass, writeGClass

Methods inherited from class ProxyInstance

equals, handle, hashCode

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EventControllerFocus

public EventControllerFocus(MemorySegment address)

Create a EventControllerFocus instance for the provided memory address.

Parameters:

address - the memory address of the native object

EventControllerFocus

public EventControllerFocus()

Create a new EventControllerFocus.

Method Details

getType

public static @Nullable Type getType()

Get the GType of the EventControllerFocus class.

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

asParent

protected EventControllerFocus asParent()

Return this instance as if it were its parent type. Comparable to the Java super keyword, but ensures the parent typeclass is also used in native code.

Overrides:

asParent in class EventController

Returns:

the instance as if it were its parent type

containsFocus

public boolean containsFocus()

Returns true if focus is within this EventControllerFocus or one of its children.

Returns:

true if focus is within this EventControllerFocus or one of its children

isFocus

public boolean isFocus()

Returns true if focus is within self, but not one of its children.

Returns:

true if focus is within self, but not one of its children

onEnter

public SignalConnection<EventControllerFocus.EnterCallback> onEnter(EventControllerFocus.EnterCallback handler)

Emitted whenever the focus enters into the widget or one of its descendents.

Note that this means you may not get an ::enter signal even though the widget becomes the focus location, in certain cases (such as when the focus moves from a descendent of the widget to the widget itself). If you are interested in these cases, you can monitor the Gtk.EventControllerFocus:is-focus property for changes.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

See Also:

• EventControllerFocus.EnterCallback.run()

emitEnter

public void emitEnter()

Emits the "enter" signal. See onEnter(EventControllerFocus.EnterCallback).

onLeave

public SignalConnection<EventControllerFocus.LeaveCallback> onLeave(EventControllerFocus.LeaveCallback handler)

Emitted whenever the focus leaves the widget hierarchy that is rooted at the widget that the controller is attached to.

Note that this means you may not get a ::leave signal even though the focus moves away from the widget, in certain cases (such as when the focus moves from the widget to a descendent). If you are interested in these cases, you can monitor the Gtk.EventControllerFocus:is-focus property for changes.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

See Also:

• EventControllerFocus.LeaveCallback.run()

emitLeave

public void emitLeave()

Emits the "leave" signal. See onLeave(EventControllerFocus.LeaveCallback).

builder

public static EventControllerFocus.Builder<? extends EventControllerFocus.Builder> builder()

A EventControllerFocus.Builder object constructs a EventControllerFocus with the specified properties. Use the various set...() methods to set properties, and finish construction with EventControllerFocus.Builder.build().

Returns:

the builder object