/* $Id: GraphChangeAdapter.java 17850 2010-01-12 19:53:35Z 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:
* mvw
*****************************************************************************
*
* 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
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// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
package org.argouml.uml.diagram;
import org.argouml.model.DiDiagram;
import org.argouml.model.DiElement;
import org.argouml.model.Model;
import org.tigris.gef.graph.GraphEvent;
import org.tigris.gef.graph.GraphListener;
import org.tigris.gef.graph.GraphModel;
import org.tigris.gef.presentation.Fig;
/**
* Adapts changes in the Diagram subsystem (the graph presentation layer)
* to changes in the Model subsyetm (diagram interchange model).
* The curent implementaion does this by listening to graph events and
* forwarding those as specific calls to the DiagramInterchangeModel.
* This should be changed to a more standard Adapter architecture that
* provides an interface for Figs and GraphModels to call only when required.
*
* @author Bob Tarling
* @stereotype singleton
*/
public final class GraphChangeAdapter implements GraphListener {
/**
* The instance.
*/
private static final GraphChangeAdapter INSTANCE =
new GraphChangeAdapter();
/**
* The getter for the instance.
*
* @return The instance.
*/
public static GraphChangeAdapter getInstance() {
return INSTANCE;
}
/**
* The constructor of a singleton is private.
*/
private GraphChangeAdapter() {
// singleton, no instantiation
}
public DiDiagram createDiagram(Class type, Object owner) {
if (Model.getDiagramInterchangeModel() != null) {
return Model.getDiagramInterchangeModel()
.createDiagram(type, owner);
}
return null;
}
public void removeDiagram(DiDiagram dd) {
if (Model.getDiagramInterchangeModel() != null) {
Model.getDiagramInterchangeModel().deleteDiagram(dd);
}
}
public DiElement createElement(GraphModel gm, Object node) {
if (Model.getDiagramInterchangeModel() != null) {
return Model.getDiagramInterchangeModel().createElement(
((UMLMutableGraphSupport) gm).getDiDiagram(), node);
}
return null;
}
public void removeElement(DiElement element) {
if (Model.getDiagramInterchangeModel() != null) {
Model.getDiagramInterchangeModel().deleteElement(element);
}
}
/*
* @see org.tigris.gef.graph.GraphListener#nodeAdded(org.tigris.gef.graph.GraphEvent)
*/
public void nodeAdded(GraphEvent e) {
Object source = e.getSource();
Object arg = e.getArg();
if (source instanceof Fig) {
source = ((Fig) source).getOwner();
}
if (arg instanceof Fig) {
arg = ((Fig) arg).getOwner();
}
Model.getDiagramInterchangeModel().nodeAdded(source, arg);
}
/*
* @see org.tigris.gef.graph.GraphListener#edgeAdded(org.tigris.gef.graph.GraphEvent)
*/
public void edgeAdded(GraphEvent e) {
Object source = e.getSource();
Object arg = e.getArg();
if (source instanceof Fig) {
source = ((Fig) source).getOwner();
}
if (arg instanceof Fig) {
arg = ((Fig) arg).getOwner();
}
Model.getDiagramInterchangeModel().edgeAdded(source, arg);
}
/*
* @see org.tigris.gef.graph.GraphListener#nodeRemoved(org.tigris.gef.graph.GraphEvent)
*/
public void nodeRemoved(GraphEvent e) {
Object source = e.getSource();
Object arg = e.getArg();
if (source instanceof Fig) {
source = ((Fig) source).getOwner();
}
if (arg instanceof Fig) {
arg = ((Fig) arg).getOwner();
}
Model.getDiagramInterchangeModel().nodeRemoved(source, arg);
}
/*
* @see org.tigris.gef.graph.GraphListener#edgeRemoved(org.tigris.gef.graph.GraphEvent)
*/
public void edgeRemoved(GraphEvent e) {
Object source = e.getSource();
Object arg = e.getArg();
if (source instanceof Fig) {
source = ((Fig) source).getOwner();
}
if (arg instanceof Fig) {
arg = ((Fig) arg).getOwner();
}
Model.getDiagramInterchangeModel().edgeRemoved(source, arg);
}
/*
* @see org.tigris.gef.graph.GraphListener#graphChanged(org.tigris.gef.graph.GraphEvent)
*/
public void graphChanged(GraphEvent e) {
Object source = e.getSource();
Object arg = e.getArg();
if (source instanceof Fig) {
source = ((Fig) source).getOwner();
}
if (arg instanceof Fig) {
arg = ((Fig) arg).getOwner();
}
Model.getDiagramInterchangeModel().graphChanged(source, arg);
}
}