/*
* 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.
*/
/*
* GeneratorPanel.java
* Copyright (C) 2007 University of Waikato, Hamilton, New Zealand
*/
package wekaexamples.gui.explorer;
import weka.core.Instances;
import weka.core.OptionHandler;
import weka.core.Utils;
import weka.datagenerators.DataGenerator;
import weka.gui.GenericObjectEditor;
import weka.gui.Logger;
import weka.gui.PropertyPanel;
import weka.gui.SysErrLog;
import weka.gui.explorer.Explorer;
import weka.gui.explorer.Explorer.ExplorerPanel;
import weka.gui.explorer.Explorer.LogHandler;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.StringWriter;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
/**
* A simple demonstration for extending the Explorer by another tab, in this
* case for the data generaors (as an extra tab instead of only the button in
* the PreprocessPanel). <br/>
* The <code>Explorer.props</code> file needs to edited to make it
* available and since this tab does not rely on the PreprocessPanel, one
* should add the "standalone" option. In other words, this would be the
* string to be added to the list of tabs in the <code>Explorer.props</code>
* file: <br/>
* <code>weka.gui.explorer.GeneratorPanel:standalone</code>
*
* @author fracpete (fracpete at waikato dot ac dot nz)
* @version $Revision$
*/
public class GeneratorPanel
extends JPanel
implements ExplorerPanel, LogHandler {
/** for serialization */
private static final long serialVersionUID = -7668783169747258984L;
/** the parent frame */
protected Explorer m_Explorer = null;
/**
* Manages sending notifications to people when we change the set of
* working instances.
*/
protected PropertyChangeSupport m_Support = new PropertyChangeSupport(this);
/** The destination for log/status messages */
protected Logger m_Log = new SysErrLog();
/** the GOE for the generators */
protected GenericObjectEditor m_GeneratorEditor = new GenericObjectEditor();
/** the text area for the output of the generated data */
protected JTextArea m_Output = new JTextArea();
/** the Generate button */
protected JButton m_ButtonGenerate = new JButton("Generate");
/** the Use button */
protected JButton m_ButtonUse = new JButton("Use");
/** register the classes */
static {
GenericObjectEditor.registerEditors();
}
/**
* initializes the panel
*/
public GeneratorPanel() {
super();
initGUI();
}
/**
* initializes the GUI
*/
protected void initGUI() {
JPanel panel;
JPanel panel2;
setLayout(new BorderLayout());
// the editor
add(new PropertyPanel(m_GeneratorEditor), BorderLayout.NORTH);
m_GeneratorEditor.setClassType(DataGenerator.class);
m_GeneratorEditor.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent e) {
repaint();
}
});
m_GeneratorEditor.setValue(new weka.datagenerators.classifiers.classification.RDG1());
// text panel for output of generated data
panel2 = new JPanel(new BorderLayout());
add(panel2, BorderLayout.CENTER);
panel2.add(new JScrollPane(m_Output));
m_Output.setFont(new java.awt.Font("Monospaced", 0, 12));
// Buttons
panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.RIGHT));
panel2.add(panel, BorderLayout.SOUTH);
m_ButtonGenerate.setMnemonic('G');
panel.add(m_ButtonGenerate);
m_ButtonGenerate.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evt){
DataGenerator generator = (DataGenerator) m_GeneratorEditor.getValue();
String relName = generator.getRelationName();
String cname = generator.getClass().getName().replaceAll(".*\\.", "");
String cmd = generator.getClass().getName();
if (generator instanceof OptionHandler)
cmd += " " + Utils.joinOptions(((OptionHandler) generator).getOptions());
try {
m_Log.logMessage("Started " + cname);
m_Log.logMessage("Command: " + cmd);
// generate data
StringWriter output = new StringWriter();
generator.setOutput(new PrintWriter(output));
DataGenerator.makeData(generator, generator.getOptions());
m_Output.setText(output.toString());
m_Log.logMessage("Finished " + cname);
}
catch (Exception ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(
getExplorer(), "Error generating data:\n" + ex.getMessage(),
"Error", JOptionPane.ERROR_MESSAGE);
}
generator.setRelationName(relName);
}
});
m_ButtonUse.setMnemonic('U');
panel.add(m_ButtonUse);
m_ButtonUse.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent evt){
m_Support.firePropertyChange("", null, null);
}
});
addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent e) {
try {
Instances data = new Instances(new StringReader(m_Output.getText()));
// set data in preproc panel as well (will notify of capabilties changes)
getExplorer().getPreprocessPanel().setInstances(data);
}
catch (Exception ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(
getExplorer(), "Error generating data:\n" + ex.getMessage(),
"Error", JOptionPane.ERROR_MESSAGE);
}
}
});
}
/**
* Sets the Explorer to use as parent frame (used for sending notifications
* about changes in the data)
*
* @param parent the parent frame
*/
public void setExplorer(Explorer parent) {
m_Explorer = parent;
}
/**
* returns the parent Explorer frame
*
* @return the parent
*/
public Explorer getExplorer() {
return m_Explorer;
}
/**
* Returns the title for the tab in the Explorer
*
* @return the title of this tab
*/
public String getTabTitle() {
return "DataGeneration";
}
/**
* Returns the tooltip for the tab in the Explorer
*
* @return the tooltip of this tab
*/
public String getTabTitleToolTip() {
return "Generating artificial datasets";
}
/**
* ignored
*
* @param inst ignored
*/
public void setInstances(Instances inst) {
// ignored
}
/**
* Sets the Logger to receive informational messages
*
* @param newLog the Logger that will now get info messages
*/
public void setLog(Logger newLog) {
m_Log = newLog;
}
/**
* Adds a PropertyChangeListener who will be notified of value changes.
*
* @param l a value of type 'PropertyChangeListener'
*/
public void addPropertyChangeListener(PropertyChangeListener l) {
m_Support.addPropertyChangeListener(l);
}
/**
* Removes a PropertyChangeListener.
*
* @param l a value of type 'PropertyChangeListener'
*/
public void removePropertyChangeListener(PropertyChangeListener l) {
m_Support.removePropertyChangeListener(l);
}
/**
* For testing only.
*
* @param args commandline arguments - ignored
*/
public static void main(String[] args) {
try {
final javax.swing.JFrame jf =
new javax.swing.JFrame("Weka Explorer: Data Generation");
jf.getContentPane().setLayout(new BorderLayout());
final GeneratorPanel sp = new GeneratorPanel();
jf.getContentPane().add(sp, BorderLayout.CENTER);
jf.addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent e) {
jf.dispose();
System.exit(0);
}
});
jf.pack();
jf.setSize(800, 600);
jf.setVisible(true);
}
catch (Exception ex) {
ex.printStackTrace();
System.err.println(ex.getMessage());
}
}
}