/* $Id: ActionAddExistingNode.java 17865 2010-01-12 20:45:26Z 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) 1996-2008 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

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

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

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 // UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 package org.argouml.uml.diagram.ui;

 import java.awt.event.ActionEvent;

 import org.argouml.i18n.Translator;

 import org.argouml.model.Model;

 import org.argouml.ui.targetmanager.TargetManager;

 import org.argouml.uml.diagram.ArgoDiagram;

 import org.argouml.uml.diagram.DiagramUtils;

 import org.tigris.gef.base.Editor;

 import org.tigris.gef.base.Globals;

 import org.tigris.gef.graph.GraphModel;

 import org.tigris.gef.graph.MutableGraphModel;

 import org.argouml.ui.UndoableAction;

 /**

 * ActionAddExistingNode enables pasting of an existing node into a Diagram.

 *

 * @author Eugenio Alvarez

 * Data Access Technologies.

 * TODO: Why do we have this class as well as ActionAddExistingNodes?

 */

 public class ActionAddExistingNode extends UndoableAction {

     /**

      * The UML object to be added to the diagram.

      */

     private Object object;

     /**

      * The Constructor.

      *

      * @param name the localized name of the action

      * @param o the node UML object to be added

      */

     public ActionAddExistingNode(String name, Object o) {

         super(name);

         object = o;

     }

     /*

      * @see javax.swing.Action#isEnabled()

      */

     public boolean isEnabled() {

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

         ArgoDiagram dia = DiagramUtils.getActiveDiagram();

         if (dia == null) {

             return false;

         }

         if (dia instanceof UMLDiagram 

                 && ((UMLDiagram) dia).doesAccept(object)) {

             return true;

         }

         MutableGraphModel gm = (MutableGraphModel) dia.getGraphModel();

         return gm.canAddNode(target);

     }

     /*

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

      */

     public void actionPerformed(ActionEvent ae) {

         super.actionPerformed(ae);

         Editor ce = Globals.curEditor();

         GraphModel gm = ce.getGraphModel();

         if (!(gm instanceof MutableGraphModel)) {

             return;

         }

         String instructions = null;

         if (object != null) {

             instructions =

                 Translator.localize(

                     "misc.message.click-on-diagram-to-add",

                     new Object[] {

                             Model.getFacade().toString(object),

                     });

             Globals.showStatus(instructions);

         }

         final ModeAddToDiagram placeMode = new ModeAddToDiagram(

                 TargetManager.getInstance().getTargets(),

                 instructions);

         Globals.mode(placeMode, false);

     }

 }