protected void processWindowEvent(WindowEvent e) {
for (Iterator<?> i = windowListeners.getUserIterator(); i.hasNext();) {
WindowListener listener = (WindowListener) i.next();
switch (e.getID()) {
case WindowEvent.WINDOW_ACTIVATED:
listener.windowActivated(e);
break;
case WindowEvent.WINDOW_CLOSED:
listener.windowClosed(e);
break;
case WindowEvent.WINDOW_CLOSING: