AutoGlassPanel.java

/*
 * AutoGlassPanel.java
 *
 * Copyright (C) 2009-12 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.studio.client.common;

import com.google.gwt.user.client.ui.Widget;
import org.rstudio.core.client.widget.GlassPanel;
import org.rstudio.core.client.widget.events.GlassVisibilityEvent;
import org.rstudio.core.client.widget.events.GlassVisibilityHandler;
import org.rstudio.studio.client.RStudioGinjector;
import org.rstudio.studio.client.application.events.EventBus;

/**
 * Automatically glasses over the child element in response to the global
 * GlassVisibilityEvent event. Use this to prevent splitters from losing their
 * draggability over iframes. 
 */
public class AutoGlassPanel extends GlassPanel
{
   public AutoGlassPanel(Widget child)
   {
      super(child);

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