/* $Id: ActionSetModelElementNamespace.java 17897 2010-01-12 21:36:40Z linus $

  *****************************************************************************

  * Copyright (c) 2009 Contributors - see below

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

  * which accompanies this distribution, and is available at

  * http://www.eclipse.org/legal/epl-v10.html

  *

  * Contributors:

  *    bobtarling

  *****************************************************************************

  *

  * Some portions of this file was previously release using the BSD License:

  */

 // Copyright (c) 1996-2006 The Regents of the University of California. All

 // Rights Reserved. Permission to use, copy, modify, and distribute this

 // software and its documentation without fee, and without a written

 // agreement is hereby granted, provided that the above copyright notice

 // and this paragraph appear in all copies.  This software program and

 // documentation are copyrighted by The Regents of the University of

 // California. The software program and documentation are supplied "AS

 // IS", without any accompanying services from The Regents. The Regents

 // does not warrant that the operation of the program will be

 // uninterrupted or error-free. The end-user understands that the program

 // was developed for research purposes and is advised not to rely

 // exclusively on the program for any reason.  IN NO EVENT SHALL THE

 // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,

 // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,

 // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF

 // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF

 // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY

 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE

 // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF

 // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,

 // UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 package org.argouml.uml.ui.foundation.core;

 import java.awt.event.ActionEvent;

 import org.argouml.model.Model;

 import org.argouml.uml.ui.UMLComboBox2;

 import org.argouml.ui.UndoableAction;

 /**

  * @since Oct 10, 2002

  * @author jaap.branderhorst@xs4all.nl

  * @stereotype singleton

  */

 public class ActionSetModelElementNamespace extends UndoableAction {

     /**

      * Constructor for ActionSetModelElementNamespace.

      */

     public ActionSetModelElementNamespace() {

         super();

     }

     /*

      * @see java.awt.event.ActionListener#actionPerformed(

      * java.awt.event.ActionEvent)

      */

     public void actionPerformed(ActionEvent e) {

         Object source = e.getSource();

         Object oldNamespace = null;

         Object newNamespace = null;

         Object m = null;

         if (source instanceof UMLComboBox2) {

             UMLComboBox2 box = (UMLComboBox2) source;

             Object o = box.getTarget();

             if (Model.getFacade().isAModelElement(o)) {

                 m =  o;

                 oldNamespace = Model.getFacade().getNamespace(m);

             }

             o = box.getSelectedItem();

             if (Model.getFacade().isANamespace(o)) {

                 newNamespace = o;

             }

         }

         if (newNamespace != oldNamespace && m != null && newNamespace != null) {

             super.actionPerformed(e);

             Model.getCoreHelper().setNamespace(m, newNamespace);

         }

     }

 }