Package org.gnome.adw

Interface Carousel.PageChangedCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Carousel

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 Carousel.PageChangedCallback
extends FunctionPointer

Functional interface declaration of the PageChangedCallback callback.

See Also:

• run(int)

Method Summary

Modifier and Type	Method	Description
void	run(int index)	This signal is emitted after a page has been changed.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int) method.
default void	upcall(MemorySegment sourceCarousel, int index)	The upcall method is called from native code.

Method Details

run

void run(int index)

This signal is emitted after a page has been changed.

It can be used to implement "infinite scrolling" by amending the pages after every scroll.

Note An empty carousel is indicated by (int)index == -1.

upcall

default void upcall(MemorySegment sourceCarousel,
 int index)

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