Interface Sidebar.DropValueLoadedCallback

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.DropValueLoadedCallback
extends FunctionPointer

Functional interface declaration of the DropValueLoadedCallback callback.

Since:

1.9

See Also:

• run(int, Value)

Method Summary

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

Method Details

run

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

Emitted when the dropped content is preloaded for the item at index.

In order for data to be preloaded, Sidebar:drop-preload must be set to TRUE.

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

See Gtk.DropTarget:value.

Since:

1.9

upcall

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

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer