/*

     dsh-venn-cytoscape-plugin  Cytoscape plugin for venn diagrams.

     Copyright (c) 2010-2012 held jointly by the individual authors.

     This library is free software; you can redistribute it and/or modify it

     under the terms of the GNU Lesser General Public License as published

     by the Free Software Foundation; either version 3 of the License, or (at

     your option) any later version.

     This library is distributed in the hope that it will be useful, but WITHOUT

     ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or

     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public

     License for more details.

     You should have received a copy of the GNU Lesser General Public License

     along with this library;  if not, write to the Free Software Foundation,

     Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA.

     > http://www.fsf.org/licensing/licenses/lgpl.html

     > http://www.opensource.org/licenses/lgpl-license.php

 */

 package org.dishevelled.venn.cytoscape;

 import java.awt.event.MouseAdapter;

 import java.awt.event.MouseEvent;

 import javax.swing.JPopupMenu;

 /**

  * Context menu listener.

  *

  * @author  Michael Heuer

  * @version $Revision$ $Date$

  */

 final class ContextMenuListener

     extends MouseAdapter

 {

     /** Context menu. */

     private final JPopupMenu contextMenu;

     /**

      * Create a new context menu listener for the specified context menu.

      *

      * @param contextMenu context menu, must not be null

      */

     ContextMenuListener(final JPopupMenu contextMenu)

     {

         if (contextMenu == null)

         {

             throw new IllegalArgumentException("contextMenu must not be null");

         }

         this.contextMenu = contextMenu;

     }

     /** {@inheritDoc} */

     public void mousePressed(final MouseEvent event)

     {

         if (event.isPopupTrigger())

         {

             showContextMenu(event);

         }

     }

     /** {@inheritDoc} */

     public void mouseReleased(final MouseEvent event)

     {

         if (event.isPopupTrigger())

         {

             showContextMenu(event);

         }

     }

     /**

      * Show context menu.

      *

      * @param event mouse event

      */

     private void showContextMenu(final MouseEvent event)

     {

         contextMenu.show(event.getComponent(), event.getX(), event.getY());

     }

 }