-void
-Editor::reset_focus (Gtk::Widget* w)
-{
- /* this resets focus to the first focusable parent of the given widget,
- * or, if there is no focusable parent, cancels focus in the toplevel
- * window that the given widget is packed into (if there is one).
- */
-
- if (!w) {
- return;
- }
-
- Gtk::Widget* top = w->get_toplevel();
-
- if (!top || !top->is_toplevel()) {
- return;
- }
-
- w = w->get_parent ();
-
- while (w) {
- if (w->get_can_focus ()) {
- Window* win = dynamic_cast<Window*> (top);
- win->set_focus (*w);
- return;
- }
- w = w->get_parent ();
- }
-
- /* no focusable parent found, cancel focus in top level window.
- C++ API cannot be used for this. Thanks, references.
- */
-
- gtk_window_set_focus (GTK_WINDOW(top->gobj()), 0);
-
-}
-