public AutoGlassAttacher(LayoutPanel panel)
{
super(panel);
EventBus eventBus = RStudioGinjector.INSTANCE.getEventBus();
eventBus.addHandler(GlassVisibilityEvent.TYPE, new GlassVisibilityHandler()
{
public void onGlass(GlassVisibilityEvent event)
{
setGlass(event.isShow());
}