/*
* 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.
*/
/*
* ClassValuePickerCustomizer.java
* Copyright (C) 2004 University of Waikato, Hamilton, New Zealand
*
*/
package weka.gui.beans;
import weka.core.Instances;
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.JLabel;
import javax.swing.JPanel;
/**
* @author Mark Hall
* @version $Revision: 7314 $
*/
public class ClassValuePickerCustomizer
extends JPanel
implements BeanCustomizer, CustomizerClosingListener,
CustomizerCloseRequester, DataFormatListener {
/** for serialization */
private static final long serialVersionUID = 8213423053861600469L;
private boolean m_displayValNames = false;
private ClassValuePicker m_classValuePicker;
private PropertyChangeSupport m_pcSupport =
new PropertyChangeSupport(this);
private JComboBox m_ClassValueCombo = new JComboBox();
private JPanel m_holderP = new JPanel();
private JLabel m_messageLabel = new JLabel("No customization possible at present.");
private ModifyListener m_modifyListener;
private boolean m_modified = false;
private Window m_parent;
private int m_backup;
public ClassValuePickerCustomizer() {
setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 5, 5, 5));
setLayout(new BorderLayout());
add(new javax.swing.JLabel("ClassValuePickerCustomizer"),
BorderLayout.NORTH);
m_holderP.setLayout(new BorderLayout());
m_holderP.setBorder(BorderFactory.createTitledBorder("Choose class value"));
m_holderP.add(m_ClassValueCombo, BorderLayout.CENTER);
m_ClassValueCombo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (m_classValuePicker != null) {
m_classValuePicker.setClassValueIndex(m_ClassValueCombo.getSelectedIndex());
m_modified = true;
}
}
});
add(m_messageLabel, 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) {
if (m_modifyListener != null) {
m_modifyListener.setModifiedStatus(ClassValuePickerCustomizer.this, m_modified);
}
if (m_parent != null) {
m_parent.dispose();
}
}
});
cancelBut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
m_classValuePicker.setClassValueIndex(m_backup);
customizerClosing();
if (m_parent != null) {
m_parent.dispose();
}
}
});
}
private void setUpNoCustPossible() {
if (m_displayValNames == true) {
remove(m_holderP);
add(m_messageLabel, BorderLayout.CENTER);
m_displayValNames = false;
}
validate(); repaint();
}
private void setUpValueSelection(Instances format) {
if (format.classIndex() < 0 || format.classAttribute().isNumeric()) {
// cant do anything in this case
return;
}
if (m_displayValNames == false) {
remove(m_messageLabel);
}
int existingClassVal = m_classValuePicker.getClassValueIndex();
String [] attribValNames = new String [format.classAttribute().numValues()];
for (int i = 0; i < attribValNames.length; i++) {
attribValNames[i] = format.classAttribute().value(i);
}
m_ClassValueCombo.setModel(new DefaultComboBoxModel(attribValNames));
if (attribValNames.length > 0) {
if (existingClassVal < attribValNames.length) {
m_ClassValueCombo.setSelectedIndex(existingClassVal);
}
}
if (m_displayValNames == false) {
add(m_holderP, BorderLayout.CENTER);
m_displayValNames = true;
}
validate(); repaint();
}
/**
* Set the bean to be edited
*
* @param object an <code>Object</code> value
*/
public void setObject(Object object) {
if (m_classValuePicker != (ClassValuePicker)object) {
// remove ourselves as a listener from the old ClassvaluePicker (if necessary)
if (m_classValuePicker != null) {
m_classValuePicker.removeDataFormatListener(this);
}
m_classValuePicker = (ClassValuePicker)object;
// add ourselves as a data format listener
m_classValuePicker.addDataFormatListener(this);
if (m_classValuePicker.getConnectedFormat() != null) {
setUpValueSelection(m_classValuePicker.getConnectedFormat());
}
m_backup = m_classValuePicker.getClassValueIndex();
}
}
public void customizerClosing() {
// remove ourselves as a listener from the ClassValuePicker (if necessary)
if (m_classValuePicker != null) {
// System.out.println("Customizer deregistering with class value picker");
m_classValuePicker.removeDataFormatListener(this);
}
m_classValuePicker.setClassValueIndex(m_backup);
}
public void newDataFormat(DataSetEvent dse) {
if (dse.getDataSet() != null) {
setUpValueSelection(m_classValuePicker.getConnectedFormat());
} else {
setUpNoCustPossible();
}
}
/**
* 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;
}
}