Package org.gnome.gtk

Interface TreeView.MoveCursorCallback

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.MoveCursorCallback
extends FunctionPointer

Functional interface declaration of the MoveCursorCallback callback.

See Also:

• run(org.gnome.gtk.MovementStep, int, boolean, boolean)

Method Summary

Modifier and Type	Method	Description
boolean	run(MovementStep step, int direction, boolean extend, boolean modify)	The GtkTreeView::move-cursor signal is a [keybinding signal]SignalAction which gets emitted when the user presses one of the cursor keys.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int, int, int, int) method.
default int	upcall(MemorySegment sourceTreeView, int step, int direction, int extend, int modify)	The upcall method is called from native code.

Method Details

run

boolean run(MovementStep step,
 int direction,
 boolean extend,
 boolean modify)

The GtkTreeView::move-cursor signal is a [keybinding signal]SignalAction which gets emitted when the user presses one of the cursor keys.

Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically. In contrast to gtk_tree_view_set_cursor() and gtk_tree_view_set_cursor_on_cell() when moving horizontally GtkTreeView::move-cursor does not reset the current selection.

upcall

default int upcall(MemorySegment sourceTreeView,
 int step,
 int direction,
 int extend,
 int modify)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gtk.MovementStep, int, boolean, boolean) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer