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:

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    run(MovementStep step, int direction, boolean extend, boolean modify)
    The GtkTreeView::move-cursor signal is a Gtk.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(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 Gtk.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(MovementStep, int, boolean, boolean) is executed.

    • toCallback

      default MemorySegment toCallback(Arena arena)
      Creates a native function pointer to the upcall(MemorySegment, int, int, int, int) method.
      Specified by:
      toCallback in interface FunctionPointer
      Parameters:
      arena - the arena in which the function pointer is allocated
      Returns:
      the native function pointer