move kbd focus reset method into ARDOUR_UI where it (probably) belongs

1 files changed, 52 insertions, 0 deletions

diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index e9ed833c7d..a53bcf167f 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -5660,3 +5660,55 @@ ARDOUR_UI::cancel_solo ()
 		_session->cancel_all_solo ();
 	}
 }
+
+void
+ARDOUR_UI::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->is_toplevel()) {
+			/* Setting the focus widget to a Gtk::Window causes all
+			 * subsequent calls to ::has_focus() on the nominal
+			 * focus widget in that window to return
+			 * false. Workaround: never set focus to the toplevel
+			 * itself.
+			 */
+			break;
+		}
+
+		if (w->get_can_focus ()) {
+			Gtk::Window* win = dynamic_cast<Gtk::Window*> (top);
+			win->set_focus (*w);
+			return;
+		}
+		w = w->get_parent ();
+	}
+
+	if (top == &_main_window) {
+
+	}
+
+	/* 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);
+
+}