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/* DefaultEmbeddingModel.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.graphs;
import java.util.Arrays;
/**
* Implementation of {@link Embedding} that at the same time functions as a model
* in a model-view-controller triple. An {@link EmbeddingListener} may
* register itself with this model to be informed about various changes:
* <ul>
* <li>Vertex coordinate changes.</li>
* <li>Dimension changes of the embedding.</li>
* </ul><p>
* Note that changes to the peer of this embedding (vertices being added or removed)
* should be listened to by a separate {@link EmbeddingListener} registered with the peer.
*
*/
public class DefaultEmbeddingModel extends DefaultEmbedding implements MutableEmbeddingModel {
//
private EmbeddingModelSupport support;
/**
* Create an embedding of the given dimension for the given peer graph.
*/
public DefaultEmbeddingModel(GraphView peer, int dimension) {
super(peer, dimension);
this.support = new EmbeddingModelSupport();
}
// extends DefaultEmbedding
@Override public void setCoordinates(Vertex vertex, double[] coordinates) {
double[] oldCoordinates = getCoordinates(vertex);
if (! Arrays.equals(coordinates, oldCoordinates)) {
super.setCoordinates(vertex, coordinates);
support.fireCoordinatesChanged(vertex);
}
}
// extends DefaultEmbedding
@Override public void setDimension(int dimension) {
if (this.dimension != dimension) {
int oldDimension = this.dimension;
super.setDimension(dimension);
support.fireDimensionChanged(oldDimension);
}
}
// implements MutableEmbeddingModel
public void setCoordinates(Vertex[] vertices, double[][] coordinates) {
for (int i=0; i < vertices.length; i++)
super.setCoordinates(vertices[i], coordinates[i]);
support.fireEmbeddingChanged();
}
// implements EmbeddingModel
public void removeEmbeddingListener(EmbeddingListener l) {
support.removeEmbeddingListener(l);
}
// implements EmbeddingModel
public void addEmbeddingListener(EmbeddingListener l) {
support.addEmbeddingListener(l);
}
// extends DefaultEmbedding
@Override public void copy(EmbeddingView original, GraphView newPeer) {
super.copy(original, newPeer);
support.fireEmbeddingChanged();
}
// extends DefaultEmbedding
@Override public void copy(EmbeddingView original) {
super.copy(original);
support.fireEmbeddingChanged();
}
}
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