/* $Id: UMLReceptionSignalComboBoxModel.java 17890 2010-01-12 21:21:00Z 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.behavior.common_behavior;

 import java.util.Collection;

 import org.argouml.kernel.Project;

 import org.argouml.kernel.ProjectManager;

 import org.argouml.model.Model;

 import org.argouml.model.RemoveAssociationEvent;

 import org.argouml.model.UmlChangeEvent;

 import org.argouml.uml.ui.UMLComboBoxModel2;

 /**

  * The model for the signal combobox on the reception proppanel.

  */

 public class UMLReceptionSignalComboBoxModel extends UMLComboBoxModel2 {

     /**

      * Constructor for UMLReceptionSignalComboBoxModel.

      */

     public UMLReceptionSignalComboBoxModel() {

         super("signal", false);

         Model.getPump().addClassModelEventListener(this,

                 Model.getMetaTypes().getNamespace(), "ownedElement");

     }

     /*

      * @see org.argouml.uml.ui.UMLComboBoxModel2#buildModelList()

      */

     protected void buildModelList() {

         Object target = getTarget();

         if (Model.getFacade().isAReception(target)) {

             Object rec = /*(MReception)*/ target;

             removeAllElements();

             Project p = ProjectManager.getManager().getCurrentProject();

             Object model = p.getRoot();

             setElements(Model.getModelManagementHelper()

                     .getAllModelElementsOfKindWithModel(

                             model,

                             Model.getMetaTypes().getSignal()));

             setSelectedItem(Model.getFacade().getSignal(rec));

         }

     }

     /*

      * @see org.argouml.uml.ui.UMLComboBoxModel2#isValidElement(Object)

      */

     protected boolean isValidElement(Object m) {

         return Model.getFacade().isASignal(m);

     }

     /*

      * @see org.argouml.uml.ui.UMLComboBoxModel2#getSelectedModelElement()

      */

     protected Object getSelectedModelElement() {

         if (getTarget() != null) {

             return Model.getFacade().getSignal(getTarget());

         }

         return null;

     }

     /**

      * Override UMLComboBoxModel2's default handling of RemoveAssociation. We

      * get this from MDR for the previous signal when a different signal is

      * selected. Don't let that remove it from the combo box. Only remove it if

      * the signal was removed from the namespace.

      * <p>

      * @param evt the event describing the property change

      */

     public void modelChanged(UmlChangeEvent evt) {

         if (evt instanceof RemoveAssociationEvent) {

             if ("ownedElement".equals(evt.getPropertyName())) {

                 Object o = getChangedElement(evt);

                 if (contains(o)) {

                     buildingModel = true;

                     if (o instanceof Collection) {

                         removeAll((Collection) o);

                     } else {

                         removeElement(o);

                     }

                     buildingModel = false;

                 }

             }

         } else {

             super.propertyChange(evt);

         }

     }

 }