/* $Id: ActivityDiagramRenderer.java 18729 2010-09-10 16:10:34Z bobtarling $

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

  * Copyright (c) 2009-2010 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:

  *    Tom Morris

  *    Bob Tarling

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

  *

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

  */

 // Copyright (c) 2003-2008 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

 // 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.diagram.activity.ui;

 import java.util.Map;

 import org.argouml.uml.diagram.state.ui.StateDiagramRenderer;

 import org.argouml.uml.diagram.ui.UMLDiagram;

 import org.tigris.gef.base.Diagram;

 import org.tigris.gef.base.Layer;

 import org.tigris.gef.base.LayerPerspective;

 import org.tigris.gef.graph.GraphModel;

 import org.tigris.gef.presentation.FigNode;

 /**

  * This class defines a renderer object for UML Activity Diagrams. In a

  * Activity Diagram the following UML objects are displayed with the

  * following Figs: <p>

  * <pre>

  *  UML Object          ---  Fig

  *  ---------------------------------------

  *  ActionState         ---  FigActionState

  *  FinalState          ---  FigFinalState

  *  Pseudostate         ---  FigPseudostate

  *    Inititial         ---  FigInitialState

  *    Choice (Branch)   ---  FigBranchState

  *    Junction          ---  FigJunctionState

  *    Fork              ---  FigForkState

  *    Join              ---  FigJoinState

  *    DeepHistory       ---  FigDeepHistoryState

  *    ShallowHistory    ---  FigShallowistoryState

  *  Transition          ---  FigTransition

  *  CallState           ---  FigCallState

  *  ObjectFlowState     ---  FigObjectFlowState

  *  Partition              --- FigPartition

  *  SubactivityState    ---  FigSubactivityState

  *  more...

  *  </pre>

  *

  * @author mkl

  *

  */

 public class ActivityDiagramRenderer extends StateDiagramRenderer {

     /*

      * @see org.tigris.gef.graph.GraphNodeRenderer#getFigNodeFor(

      *      org.tigris.gef.graph.GraphModel, org.tigris.gef.base.Layer,

      *      java.lang.Object, java.util.Map)

      */

     @Override

     public FigNode getFigNodeFor(GraphModel gm, Layer lay, Object node,

             Map styleAttributes) {

         FigNode figNode = null;

         // Although not generally true for GEF, for Argo we know that the layer

         // is a LayerPerspective which knows the associated diagram

         Diagram diag = ((LayerPerspective) lay).getDiagram(); 

         if (diag instanceof UMLDiagram

             && ((UMLDiagram) diag).doesAccept(node)) {

             figNode = (FigNode) ((UMLDiagram) diag).drop(node, null);

         } else {

             figNode =  super.getFigNodeFor(gm, lay, node, styleAttributes);

             if (figNode == null) {

                 return null;

             }

         }

         lay.add(figNode);

         return figNode;

     }

 }