Package org.gnome.gtk

Interface TreeView.TestExpandRowCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

TreeView

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 TreeView.TestExpandRowCallback
extends FunctionPointer

Functional interface declaration of the TestExpandRowCallback callback.

See Also:

• run(org.gnome.gtk.TreeIter, org.gnome.gtk.TreePath)

Method Summary

Modifier and Type	Method	Description
boolean	run(TreeIter iter, TreePath path)	The given row is about to be expanded (show its children nodes).
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 int	upcall(MemorySegment sourceTreeView, MemorySegment iter, MemorySegment path)	The upcall method is called from native code.

Method Details

run

boolean run(TreeIter iter,
 TreePath path)

The given row is about to be expanded (show its children nodes). Use this signal if you need to control the expandability of individual rows.

upcall

default int upcall(MemorySegment sourceTreeView,
 MemorySegment iter,
 MemorySegment path)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.TreeIter, org.gnome.gtk.TreePath) 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 function pointer will be allocated in this arena

Returns:

the native function pointer