/*
* 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.
*/
/*
* ClassAssignerCustomizer.java
* Copyright (C) 2002 University of Waikato, Hamilton, New Zealand
*
*/
package weka.gui.beans;
import weka.core.Attribute;
import weka.core.Instances;
import weka.gui.PropertySheetPanel;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.Customizer;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import javax.swing.BorderFactory;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JPanel;
/**
* GUI customizer for the class assigner bean
*
* @author <a href="mailto:mhall@cs.waikato.ac.nz">Mark Hall</a>
* @version $Revision: 7312 $
*/
public class ClassAssignerCustomizer
extends JPanel
implements BeanCustomizer, CustomizerClosingListener,
CustomizerCloseRequester, DataFormatListener {
/** for serialization */
private static final long serialVersionUID = 476539385765301907L;
private boolean m_displayColNames = false;
private ClassAssigner m_classAssigner;
private PropertyChangeSupport m_pcSupport =
new PropertyChangeSupport(this);
private PropertySheetPanel m_caEditor =
new PropertySheetPanel();
private JComboBox m_ClassCombo = new JComboBox();
private JPanel m_holderP = new JPanel();
private ModifyListener m_modifyListener;
private Window m_parent;
private String m_backup;
public ClassAssignerCustomizer() {
setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 5, 5, 5));
setLayout(new BorderLayout());
add(new javax.swing.JLabel("ClassAssignerCustomizer"),
BorderLayout.NORTH);
m_holderP.setLayout(new BorderLayout());
m_holderP.setBorder(BorderFactory.createTitledBorder("Choose class attribute"));
m_holderP.add(m_ClassCombo, BorderLayout.CENTER);
m_ClassCombo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (m_classAssigner != null && m_displayColNames == true) {
m_classAssigner.setClassColumn(""+(m_ClassCombo.getSelectedIndex()));
}
}
});
add(m_caEditor, BorderLayout.CENTER);
addButtons();
}
private void addButtons() {
JButton okBut = new JButton("OK");
JButton cancelBut = new JButton("Cancel");
JPanel butHolder = new JPanel();
butHolder.setLayout(new GridLayout(1, 2));
butHolder.add(okBut); butHolder.add(cancelBut);
add(butHolder, BorderLayout.SOUTH);
okBut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
m_modifyListener.setModifiedStatus(ClassAssignerCustomizer.this, true);
if (m_parent != null) {
m_parent.dispose();
}
}
});
cancelBut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
customizerClosing();
if (m_parent != null) {
m_parent.dispose();
}
}
});
}
private void setUpStandardSelection() {
if (m_displayColNames == true) {
remove(m_holderP);
m_caEditor.setTarget(m_classAssigner);
add(m_caEditor, BorderLayout.CENTER);
m_displayColNames = false;
}
validate(); repaint();
}
private void setUpColumnSelection(Instances format) {
if (m_displayColNames == false) {
remove(m_caEditor);
}
int existingClassCol = format.classIndex();
if (existingClassCol < 0) {
existingClassCol = 0;
}
String [] attribNames = new String [format.numAttributes()+1];
attribNames[0] = "NO CLASS";
for (int i = 1; i < attribNames.length; i++) {
String type = "(" + Attribute.typeToStringShort(format.attribute(i-1)) + ") ";
attribNames[i] = type + format.attribute(i-1).name();
}
m_ClassCombo.setModel(new DefaultComboBoxModel(attribNames));
if (attribNames.length > 0) {
m_ClassCombo.setSelectedIndex(existingClassCol+1);
}
if (m_displayColNames == false) {
add(m_holderP, BorderLayout.CENTER);
m_displayColNames = true;
}
validate(); repaint();
}
/**
* Set the bean to be edited
*
* @param object an <code>Object</code> value
*/
public void setObject(Object object) {
if (m_classAssigner != (ClassAssigner)object) {
// remove ourselves as a listener from the old ClassAssigner (if necessary)
if (m_classAssigner != null) {
m_classAssigner.removeDataFormatListener(this);
}
m_classAssigner = (ClassAssigner)object;
// add ourselves as a data format listener
m_classAssigner.addDataFormatListener(this);
m_caEditor.setTarget(m_classAssigner);
if (m_classAssigner.getConnectedFormat() != null) {
setUpColumnSelection(m_classAssigner.getConnectedFormat());
}
m_backup = m_classAssigner.getClassColumn();
}
}
public void customizerClosing() {
// remove ourselves as a listener from the ClassAssigner (if necessary)
if (m_classAssigner != null) {
//System.out.println("Customizer deregistering with class assigner");
m_classAssigner.removeDataFormatListener(this);
}
if (m_backup != null) {
m_classAssigner.setClassColumn(m_backup);
}
}
public void newDataFormat(DataSetEvent dse) {
if (dse.getDataSet() != null) {
// System.err.println("Setting up column selection.........");
setUpColumnSelection(m_classAssigner.getConnectedFormat());
} else {
setUpStandardSelection();
}
}
/**
* Add a property change listener
*
* @param pcl a <code>PropertyChangeListener</code> value
*/
public void addPropertyChangeListener(PropertyChangeListener pcl) {
m_pcSupport.addPropertyChangeListener(pcl);
}
/**
* Remove a property change listener
*
* @param pcl a <code>PropertyChangeListener</code> value
*/
public void removePropertyChangeListener(PropertyChangeListener pcl) {
m_pcSupport.removePropertyChangeListener(pcl);
}
@Override
public void setModifiedListener(ModifyListener l) {
m_modifyListener = l;
}
@Override
public void setParentWindow(Window parent) {
m_parent = parent;
}
}