Package org.gnome.gtk

Interface Widget.MoveFocusCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Widget

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface Widget.MoveFocusCallback
extends FunctionPointer

Functional interface declaration of the MoveFocusCallback callback.

See Also:

• run(org.gnome.gtk.DirectionType)

Method Summary

Modifier and Type	Method	Description
void	run(DirectionType direction)	Emitted when the focus is moved.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int) method.
default void	upcall(MemorySegment sourceWidget, int direction)	The upcall method is called from native code.

Method Details

run

void run(DirectionType direction)

Emitted when the focus is moved.

The ::move-focus signal is a keybinding signal.

The default bindings for this signal are Tab to move forward, and Shift+Tab to move backward.

upcall

default void upcall(MemorySegment sourceWidget,
 int direction)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.DirectionType) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer