Package org.gnome.gtk

Interface LinkButton.ActivateLinkCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

LinkButton

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 LinkButton.ActivateLinkCallback
extends FunctionPointer

Functional interface declaration of the ActivateLinkCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
boolean	run()	Emitted each time the GtkLinkButton is clicked.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment sourceLinkButton)	The upcall method is called from native code.

Method Details

run

boolean run()

Emitted each time the GtkLinkButton is clicked.

The default handler will call FileLauncher.launch(org.gnome.gtk.Window, org.gnome.gio.Cancellable, org.gnome.gio.AsyncReadyCallback) with the URI stored inside the Gtk.LinkButton:uri property.

To override the default behavior, you can connect to the ::activate-link signal and stop the propagation of the signal by returning true from your handler.

upcall

default int upcall(MemorySegment sourceLinkButton)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer