/* $Id: ButtonActionNewGuard.java 17894 2010-01-12 21:29:01Z 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) 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.state_machines;

 import java.awt.event.ActionEvent;

 import org.argouml.application.helpers.ResourceLoaderWrapper;

 import org.argouml.i18n.Translator;

 import org.argouml.kernel.UmlModelMutator;

 import org.argouml.model.Model;

 import org.argouml.ui.targetmanager.TargetManager;

 import org.argouml.ui.UndoableAction;

 import org.tigris.toolbar.toolbutton.ModalAction;

 /**

  * This is an Action to be used for Buttons to create a guard.

  * If a guard already exists, then navigate to it.

  * 

  * @author Michiel

  */

 @UmlModelMutator

 public class ButtonActionNewGuard extends UndoableAction 

     implements ModalAction {

     public ButtonActionNewGuard() {

         super();

         putValue(NAME, getKeyName());

         putValue(SHORT_DESCRIPTION, Translator.localize(getKeyName()));

         Object icon = ResourceLoaderWrapper.lookupIconResource(getIconName());

         putValue(SMALL_ICON, icon);

     }

     public void actionPerformed(ActionEvent e) {

         if (!isEnabled()) return;

         super.actionPerformed(e);

         Object target = TargetManager.getInstance().getModelTarget();

         Object guard = Model.getFacade().getGuard(target);

         if (guard == null) {

             guard = Model.getStateMachinesFactory().buildGuard(target);

         }

         TargetManager.getInstance().setTarget(guard);

     }

     public boolean isEnabled() {

         Object target = TargetManager.getInstance().getModelTarget();

         return Model.getFacade().isATransition(target);

     }

     protected String getKeyName() {

         return "button.new-guard";

     }

     protected String getIconName() {

         return "Guard";

     }

 }