content: package mars.venus;
  
  import java.awt.event.MouseAdapter;
  import java.awt.event.MouseEvent;
  
  import javax.swing.JPopupMenu;
  
  /*
   * Copyright (c) 2003-2006, Pete Sanderson and Kenneth Vollmar
   *
   * Developed by Pete Sanderson (psanderson@otterbein.edu) and Kenneth Vollmar
   * (kenvollmar@missouristate.edu)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * (MIT license, http://www.opensource.org/licenses/mit-license.html)
   */
  
  // Experimental version 3 August 2006 Pete Sanderson
  // This will display the Settings popup menu upon right-click.
  // Menu selections themselves are handled separately.
  // Code below is adapted from Java Tutorial on working with menus.
  
  public class PopupListener extends MouseAdapter {
  
  	private final JPopupMenu popup;
  
  	public PopupListener(final JPopupMenu p) {
  		popup = p;
  	}
  
  	@Override
  	public void mousePressed(final MouseEvent e) {
  		maybeShowPopup(e);
  	}
  
  	@Override
  	public void mouseReleased(final MouseEvent e) {
  		maybeShowPopup(e);
  	}
  
  	private void maybeShowPopup(final MouseEvent e) {
  		if (e.isPopupTrigger()) { popup.show(e.getComponent(), e.getX(), e.getY()); }
  	}
  }
  