content: /*
   *    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.
   *
   *    You should have received a copy of the GNU General Public License
   *    along with this program; if not, write to the Free Software
   *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  /*
   *    GraphViewer.java
   *    Copyright (C) 2002 University of Waikato, Hamilton, New Zealand
   *
   */
  
  package weka.gui.beans;
  
  import weka.core.Drawable;
  import weka.core.FastVector;
  import weka.gui.ResultHistoryPanel;
  import weka.gui.graphvisualizer.BIFFormatException;
  import weka.gui.graphvisualizer.GraphVisualizer;
  import weka.gui.treevisualizer.PlaceNode2;
  import weka.gui.treevisualizer.TreeVisualizer;
  
  import java.awt.BorderLayout;
  import java.awt.event.MouseEvent;
  import java.io.Serializable;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.Enumeration;
  import java.util.Vector;
  import java.beans.beancontext.BeanContext;
  import java.beans.beancontext.BeanContextChild;
  import java.beans.beancontext.BeanContextChildSupport;
  import java.beans.PropertyChangeListener;
  import java.beans.VetoableChangeListener;
  
  import javax.swing.BorderFactory;
  import javax.swing.JFrame;
  import javax.swing.JPanel;
  
  /**
   * A bean encapsulating weka.gui.treevisualize.TreeVisualizer
   *
   * @author <a href="mailto:mhall@cs.waikato.ac.nz">Mark Hall</a>
   * @version $Revision: 1.9 $
   */
  public class GraphViewer 
    extends JPanel
    implements Visible, GraphListener,
  	     UserRequestAcceptor, 
               Serializable, BeanContextChild {
  
    /** for serialization */
    private static final long serialVersionUID = -5183121972114900617L;
  
    protected BeanVisual m_visual;
  
    private transient JFrame m_resultsFrame = null;
  
    protected transient ResultHistoryPanel m_history;
  
    /**
     * BeanContex that this bean might be contained within
     */
    protected transient BeanContext m_beanContext = null;
  
    /**
     * BeanContextChild support
     */
    protected BeanContextChildSupport m_bcSupport = 
      new BeanContextChildSupport(this);
  
    /**
     * True if this bean's appearance is the design mode appearance
     */
    protected boolean m_design;
  
    public GraphViewer() {
      /*    setUpResultHistory();
      setLayout(new BorderLayout());
      add(m_visual, BorderLayout.CENTER); */
  
      java.awt.GraphicsEnvironment ge = 
        java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(); 
      if (!ge.isHeadless()) {
        appearanceFinal();
      }
    }
  
    protected void appearanceDesign() {
      setUpResultHistory();
      removeAll();
      m_visual = 
        new BeanVisual("GraphViewer", 
                       BeanVisual.ICON_PATH+"DefaultGraph.gif",
  		   BeanVisual.ICON_PATH+"DefaultGraph_animated.gif");
      setLayout(new BorderLayout());
      add(m_visual, BorderLayout.CENTER);
    }
  
    protected void appearanceFinal() {
      removeAll();
      setLayout(new BorderLayout());
      setUpFinal();
    }
  
    protected void setUpFinal() {
      setUpResultHistory();
      add(m_history, BorderLayout.CENTER);
    }
  
    /**
     * Global info for this bean
     *
     * @return a <code>String</code> value
     */
    public String globalInfo() {
      return "Graphically visualize trees or graphs produced by classifiers/clusterers.";
    }
  
    private void setUpResultHistory() {
      if (m_history == null) {
        m_history = new ResultHistoryPanel(null);
      }
      m_history.setBorder(BorderFactory.createTitledBorder("Graph list"));
      m_history.setHandleRightClicks(false);
      m_history.getList().
        addMouseListener(new ResultHistoryPanel.RMouseAdapter() {
  	  /** for serialization */
  	  private static final long serialVersionUID = -4984130887963944249L;
  
  	  public void mouseClicked(MouseEvent e) {
  	    int index = m_history.getList().locationToIndex(e.getPoint());
  	    if (index != -1) {
  	      String name = m_history.getNameAtIndex(index);
  	      doPopup(name);
  	    }
  	  }
  	});
    }
  
    /**
     * Set a bean context for this bean
     *
     * @param bc a <code>BeanContext</code> value
     */
    public void setBeanContext(BeanContext bc) {
      m_beanContext = bc;
      m_design = m_beanContext.isDesignTime();
      if (m_design) {
        appearanceDesign();
      } else {
        java.awt.GraphicsEnvironment ge = 
          java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(); 
        if (!ge.isHeadless()){
          appearanceFinal();
        }
      }
    }
  
    /**
     * Return the bean context (if any) that this bean is embedded in
     *
     * @return a <code>BeanContext</code> value
     */
    public BeanContext getBeanContext() {
      return m_beanContext;
    }
  
    /**
     * Add a vetoable change listener to this bean
     *
     * @param name the name of the property of interest
     * @param vcl a <code>VetoableChangeListener</code> value
     */
    public void addVetoableChangeListener(String name,
  				       VetoableChangeListener vcl) {
      m_bcSupport.addVetoableChangeListener(name, vcl);
    }
    
    /**
     * Remove a vetoable change listener from this bean
     *
     * @param name the name of the property of interest
     * @param vcl a <code>VetoableChangeListener</code> value
     */
    public void removeVetoableChangeListener(String name,
  					   VetoableChangeListener vcl) {
      m_bcSupport.removeVetoableChangeListener(name, vcl);
    }
  
    /**
     * Accept a graph
     *
     * @param e a <code>GraphEvent</code> value
     */
    public synchronized void acceptGraph(GraphEvent e) {
  
      FastVector graphInfo = new FastVector();
  
      if (m_history == null) {
        setUpResultHistory();
      }
      String name = (new SimpleDateFormat("HH:mm:ss - ")).format(new Date());
  
      name += e.getGraphTitle();
      graphInfo.addElement(new Integer(e.getGraphType()));
      graphInfo.addElement(e.getGraphString());
      m_history.addResult(name, new StringBuffer());
      m_history.addObject(name, graphInfo);
    }
  
    /**
     * Set the visual appearance of this bean
     *
     * @param newVisual a <code>BeanVisual</code> value
     */
    public void setVisual(BeanVisual newVisual) {
      m_visual = newVisual;
    }
  
    /**
     * Get the visual appearance of this bean
     *
     */
    public BeanVisual getVisual() {
      return m_visual;
    }
  
    /**
     * Use the default visual appearance
     *
     */
    public void useDefaultVisual() {
      m_visual.loadIcons(BeanVisual.ICON_PATH+"DefaultGraph.gif",
  		       BeanVisual.ICON_PATH+"DefaultGraph_animated.gif");
    }
  
    /**
     * Popup a result list from which the user can select a graph to view
     *
     */
    public void showResults() {
      if (m_resultsFrame == null) {
        if (m_history == null) {
  	setUpResultHistory();
        }
        m_resultsFrame = new JFrame("Graph Viewer");
        m_resultsFrame.getContentPane().setLayout(new BorderLayout());
        m_resultsFrame.getContentPane().add(m_history, BorderLayout.CENTER);
        m_resultsFrame.addWindowListener(new java.awt.event.WindowAdapter() {
  	  public void windowClosing(java.awt.event.WindowEvent e) {
  	    m_resultsFrame.dispose();
  	    m_resultsFrame = null;
  	  }
  	});
        m_resultsFrame.pack();
        m_resultsFrame.setVisible(true);
      } else {
        m_resultsFrame.toFront();
      }
    }
  
    private void doPopup(String name) {
  
      FastVector graph;  
      String grphString;
      int grphType;
  
      graph = (FastVector)m_history.getNamedObject(name);
      grphType = ((Integer)graph.firstElement()).intValue();
      grphString = (String)graph.lastElement();
  
      if(grphType == Drawable.TREE){
          final javax.swing.JFrame jf = 
              new javax.swing.JFrame("Weka Classifier Tree Visualizer: "+name);
          jf.setSize(500,400);
          jf.getContentPane().setLayout(new BorderLayout());
          TreeVisualizer tv = 
              new TreeVisualizer(null,
  			 grphString,
  			 new PlaceNode2());
          jf.getContentPane().add(tv, BorderLayout.CENTER);
          jf.addWindowListener(new java.awt.event.WindowAdapter() {
              public void windowClosing(java.awt.event.WindowEvent e) {
              jf.dispose();
              }
          });
  
          jf.setVisible(true);
      }
      if(grphType == Drawable.BayesNet) {
        final javax.swing.JFrame jf = 
  	new javax.swing.JFrame("Weka Classifier Graph Visualizer: "+name);
        jf.setSize(500,400);
        jf.getContentPane().setLayout(new BorderLayout());
        GraphVisualizer gv = 
  	new GraphVisualizer();
        try { 
  	gv.readBIF(grphString);
        }
        catch (BIFFormatException be) { 
  	System.err.println("unable to visualize BayesNet"); be.printStackTrace(); 
        }
        gv.layoutGraph();
        jf.getContentPane().add(gv, BorderLayout.CENTER);
        jf.addWindowListener(new java.awt.event.WindowAdapter() {
  	  public void windowClosing(java.awt.event.WindowEvent e) {
              jf.dispose();
  	  }
          });
        
        jf.setVisible(true);
      }
    }
  
    /**
     * Return an enumeration of user requests
     *
     * @return an <code>Enumeration</code> value
     */
    public Enumeration enumerateRequests() {
      Vector newVector = new Vector(0);
      newVector.addElement("Show results");
  
      return newVector.elements();
    }
  
    /**
     * Perform the named request
     *
     * @param request a <code>String</code> value
     * @exception IllegalArgumentException if an error occurs
     */
    public void performRequest(String request) 
      {
      if (request.compareTo("Show results") == 0) {
        showResults();
      } else {
        throw new 
  	IllegalArgumentException(request
  		    + " not supported (GraphViewer)");
      }
    }
  }
  