com.rapidminer.gui.graphs.LayoutSelection.java Source code

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Here is the source code for com.rapidminer.gui.graphs.LayoutSelection.java

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/**
 * Copyright (C) 2001-2015 by RapidMiner and the contributors
 *
 * Complete list of developers available at our web site:
 *
 *      http://rapidminer.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.graphs;

import com.rapidminer.tools.LogService;
import edu.uci.ics.jung.algorithms.layout.BalloonLayout;
import edu.uci.ics.jung.algorithms.layout.CircleLayout;
import edu.uci.ics.jung.algorithms.layout.FRLayout2;
import edu.uci.ics.jung.algorithms.layout.ISOMLayout;
import edu.uci.ics.jung.algorithms.layout.KKLayout;
import edu.uci.ics.jung.algorithms.layout.Layout;
import edu.uci.ics.jung.algorithms.layout.RadialTreeLayout;
import edu.uci.ics.jung.algorithms.layout.SpringLayout2;
import edu.uci.ics.jung.algorithms.layout.TreeLayout;
import edu.uci.ics.jung.graph.Forest;
import edu.uci.ics.jung.graph.Graph;

import java.awt.event.ActionEvent;
import java.lang.reflect.Constructor;
import java.util.Iterator;
import java.util.Map;
import java.util.logging.Level;

import javax.swing.JComboBox;

import org.apache.commons.collections15.Transformer;

/**
 * The layout selection for the {@link GraphViewer}.
 * 
 * @author Ingo Mierswa
 */
public class LayoutSelection<V, E> extends JComboBox {

    private static final long serialVersionUID = 8924517975475876102L;

    private GraphViewer<V, E> graphViewer;

    private transient Graph graph;

    private Map<String, Class> layoutMap = null;

    private boolean animate = true;

    private Layout<V, E> layout;

    public LayoutSelection(GraphViewer<V, E> graphViewer, Graph<V, E> graph) {
        super();
        this.graphViewer = graphViewer;
        this.graph = graph;
        this.layout = new ISOMLayout<V, E>(graph);

        layoutMap = new java.util.LinkedHashMap<String, Class>();

        if (graph instanceof Forest) {
            layoutMap.put("Tree", ShapeBasedTreeLayout.class);
            layoutMap.put("Tree (Tight)", TreeLayout.class);
            layoutMap.put("Radial", RadialTreeLayout.class);
            layoutMap.put("Balloon", BalloonLayout.class);
        }

        layoutMap.put("ISOM", ISOMLayout.class);
        layoutMap.put("KKLayout", KKLayout.class);
        layoutMap.put("FRLayout", FRLayout2.class);
        layoutMap.put("Circle", CircleLayout.class);
        layoutMap.put("Spring", SpringLayout2.class);

        Iterator<String> it = layoutMap.keySet().iterator();
        while (it.hasNext()) {
            addItem(it.next());
        }

        addActionListener(this);
    }

    public Layout<V, E> getSelectedLayout() {
        return this.layout;
    }

    @Override
    public void actionPerformed(ActionEvent arg0) {
        setLayout();
    }

    public void setAnimate(boolean animate) {
        this.animate = animate;
    }

    public boolean getAnimate() {
        return this.animate;
    }

    @SuppressWarnings("unchecked")
    public void setLayout() {
        String layoutName = (String) getSelectedItem();
        Class<?> layoutClass = null;
        try {
            layoutClass = layoutMap.get(layoutName);
        } catch (Exception e) {
            // LogService.getGlobal().logError("Layout could not be intialized: " + e.getMessage());
            LogService.getRoot().log(Level.SEVERE,
                    "com.rapidminer.gui.graphs.LayoutSelection.layout_could_not_be_initialized", e.getMessage());
        }

        if (layoutClass != null) {
            try {
                Constructor constructor = null;
                Object o = null;
                if (layoutClass == ShapeBasedTreeLayout.class) {
                    constructor = layoutClass.getConstructor(new Class[] { Forest.class, Transformer.class });
                    o = constructor.newInstance(graph,
                            new ExtendedVertexShapeTransformer<V>(graphViewer.getGraphCreator()));
                } else if ((layoutClass == TreeLayout.class) || (layoutClass == BalloonLayout.class)
                        || (layoutClass == RadialTreeLayout.class)) {
                    constructor = layoutClass.getConstructor(new Class[] { Forest.class });
                    o = constructor.newInstance(new Object[] { graph });
                } else {
                    constructor = layoutClass.getConstructor(new Class[] { Graph.class });
                    o = constructor.newInstance(new Object[] { graph });
                }
                if (o != null) {
                    this.layout = (Layout) o;
                    this.graphViewer.changeLayout(layout, animate, 0, 0);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}