Package org.gnome.gtk

Interface CellArea.FocusChangedCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

CellArea

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 CellArea.FocusChangedCallback
extends FunctionPointer

Functional interface declaration of the FocusChangedCallback callback.

See Also:

• run(org.gnome.gtk.CellRenderer, java.lang.String)

Method Summary

Modifier and Type	Method	Description
void	run(@Nullable CellRenderer renderer, String path)	Indicates that focus changed on this area. This signal is emitted either as a result of focus handling or event handling.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default void	upcall(MemorySegment sourceCellArea, MemorySegment renderer, MemorySegment path)	The upcall method is called from native code.

Method Details

run

void run(@Nullable CellRenderer renderer,
 String path)

Indicates that focus changed on this area. This signal is emitted either as a result of focus handling or event handling.

It's possible that the signal is emitted even if the currently focused renderer did not change, this is because focus may change to the same renderer in the same cell area for a different row of data.

upcall

default void upcall(MemorySegment sourceCellArea,
 MemorySegment renderer,
 MemorySegment path)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.CellRenderer, java.lang.String) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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