Interface Sidebar.DropCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

Sidebar

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 Sidebar.DropCallback
extends FunctionPointer

Functional interface declaration of the DropCallback callback.

Since:

1.9

See Also:

• run(int, Value, Set)

Method Summary

Modifier and Type	Method	Description
boolean	run(int index, @Nullable Value value, Set<DragAction> preferredAction)	Emitted when content is dropped onto the item at index.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, int, MemorySegment, int) method.
default int	upcall(MemorySegment sourceSidebar, int index, MemorySegment value, int preferredAction)	The upcall method is called from native code.

Method Details

run

boolean run(int index,
 @Nullable Value value,
 Set<DragAction> preferredAction)

Emitted when content is dropped onto the item at index.

The content must be of one of the types set up via Sidebar.setupDropTarget(Set, Type[]).

See Gtk.DropTarget::drop.

upcall

default int upcall(MemorySegment sourceSidebar,
 int index,
 MemorySegment value,
 int preferredAction)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer