/* $Id: ActionSetMetaClass.java 17898 2010-01-12 21:38:37Z 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) 2003-2007 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.extension_mechanisms;

 import java.awt.event.ActionEvent;

 import java.util.Collection;

 import javax.swing.Action;

 import org.argouml.application.helpers.ResourceLoaderWrapper;

 import org.argouml.i18n.Translator;

 import org.argouml.model.Model;

 import org.argouml.uml.ui.UMLComboBox2;

 import org.argouml.ui.UndoableAction;

 /**

  * Action to set the baseclass of a stereotype.

  * 

  * TODO: This needs to be extended to support multiple bases classes for a

  * stereotype as added in UML 1.4.

  * 

  * @author mkl

  */

 public class ActionSetMetaClass extends UndoableAction {

     /**

      * The Singleton.

      */

     public static final ActionSetMetaClass SINGLETON =

         new ActionSetMetaClass();

     /**

      * Constructor.

      */

     public ActionSetMetaClass() {

         super(Translator.localize("Set"),

                 ResourceLoaderWrapper.lookupIcon("Set"));

         // Set the tooltip string:

         putValue(Action.SHORT_DESCRIPTION, 

                 Translator.localize("Set"));

     }

     /*

      * @see org.tigris.gef.undo.UndoableAction#actionPerformed(java.awt.event.ActionEvent)

      */

     public void actionPerformed(ActionEvent e) {

         super.actionPerformed(e);

         Object source = e.getSource();

         Object newBase = null;

         Object stereo = null;

         if (source instanceof UMLComboBox2) {

             UMLComboBox2 combo = (UMLComboBox2) source;

             stereo = combo.getTarget();

             if (Model.getFacade().isAStereotype(stereo)) {

                 Collection oldBases = Model.getFacade().getBaseClasses(stereo);

                 newBase = combo.getSelectedItem();

                 if (newBase != null) { // TODO: How come this happens?

                     if (!oldBases.contains(newBase)) {

                         Model.getExtensionMechanismsHelper().addBaseClass(

                                 stereo,

                                 newBase);

                     } else {

                         if (newBase != null && newBase.equals("")) {

                             Model.getExtensionMechanismsHelper().addBaseClass(

                                     stereo, "ModelElement");

                         }

                     }

                 }

             }

         }

     }

 }