/* $Id: ClassdiagramModelElementFactory.java 17863 2010-01-12 20:07:22Z 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:

  *    tfmorris

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

  *

  * 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

 // 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.static_structure.layout;

 import org.apache.log4j.Logger;

 import org.argouml.uml.diagram.layout.LayoutedObject;

 import org.argouml.uml.diagram.static_structure.ui.FigComment;

 import org.argouml.uml.diagram.static_structure.ui.FigEdgeNote;

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

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

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

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

 import org.tigris.gef.presentation.FigNode;

 /** a class to get the proper layouter for a Fig.

  * Currently this deals only with Generalizations and Realizations.

  *

  * @author Markus Klink

  * @stereotype singleton

 */

 public class ClassdiagramModelElementFactory

 {

     private static final Logger LOG =

         Logger.getLogger(ClassdiagramModelElementFactory.class);

     /**

      * The singleton.

      */

     public static final ClassdiagramModelElementFactory SINGLETON =

         new ClassdiagramModelElementFactory();

     private ClassdiagramModelElementFactory() { }

     /** create layouter object from a Fig.*

      *

      * @param f Object which contains the Fig

      * @return Layouter for the Edge or Classnode or null if none exists.

      */

     public LayoutedObject getInstance(Object f) {

         if (f instanceof FigComment) {

             return (new ClassdiagramNote((FigComment) f));

         } else if (f instanceof FigNodeModelElement) {

             return (new ClassdiagramNode((FigNode) f));

         } else if (f instanceof FigGeneralization) {

             return new ClassdiagramGeneralizationEdge((FigGeneralization) f);

         } else if (f instanceof FigAbstraction) {

             return (new ClassdiagramRealizationEdge((FigAbstraction) f));

         } else if (f instanceof FigAssociation) {

             return (new ClassdiagramAssociationEdge((FigAssociation) f));

         } else if (f instanceof FigEdgeNote) {

             return (new ClassdiagramNoteEdge((FigEdgeNote) f));

         }

         LOG.debug("Do not know how to deal with: " + f.getClass().getName()

                 + "\nUsing standard layout");

         return null;

     }

 }