/**
* 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.getClassValue();
}
}
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.setClassValue(m_backup);
}
private void setupTextBoxSelection() {
m_textBoxEntryMode = true;
JPanel holderPanel = new JPanel();
holderPanel.setLayout(new BorderLayout());
holderPanel.setBorder(BorderFactory.createTitledBorder("Specify class label"));
JLabel label = new JLabel("Class label ", SwingConstants.RIGHT);
holderPanel.add(label, BorderLayout.WEST);
m_valueTextBox = new JTextField(15);
m_valueTextBox.setToolTipText(
"Class label. /first, /last and /<num> "
+ "can be used to specify the first, last or specific index "
+ "of the label to use respectively.");
holderPanel.add(m_valueTextBox, BorderLayout.CENTER);
JPanel holder2 = new JPanel();
holder2.setLayout(new BorderLayout());
holder2.add(holderPanel, BorderLayout.NORTH);
add(holder2, BorderLayout.CENTER);
String existingClassVal = m_classValuePicker.getClassValue();
if (existingClassVal != null) {
m_valueTextBox.setText(existingClassVal);
}
}
private void setUpValueSelection(Instances format) {
if (format.classIndex() < 0 || format.classAttribute().isNumeric()) {
// cant do anything in this case
m_messageLabel.setText(
(format.classIndex() < 0) ? "EROR: no class attribute set" : "ERROR: class is numeric");
return;
}
if (m_displayValNames == false) {
remove(m_messageLabel);
}
m_textBoxEntryMode = false;
if (format.classAttribute().numValues() == 0) {
// loader may not be able to give us the set of legal
// values for a nominal attribute until it has read
// the data (e.g. database loader or csv loader).
// In this case we'll use a text box and the user
// can enter the class value.
setupTextBoxSelection();
validate();
repaint();
return;
}
String existingClassVal = m_classValuePicker.getClassValue();
if (existingClassVal == null) {
existingClassVal = "";
}
int classValIndex = format.classAttribute().indexOfValue(existingClassVal);
// do we have a special (last, first or number)
if (existingClassVal.startsWith("/")) {
existingClassVal = existingClassVal.substring(1);
if (existingClassVal.equalsIgnoreCase("first")) {
classValIndex = 0;
} else if (existingClassVal.equalsIgnoreCase("last")) {
classValIndex = format.classAttribute().numValues() - 1;
} else {
// try and parse as a number
classValIndex = Integer.parseInt(existingClassVal);
classValIndex--;
}
}
if (classValIndex < 0) {
classValIndex = 0;
}
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(classValIndex);
// }
}
if (m_displayValNames == false) {
add(m_holderP, BorderLayout.CENTER);
m_displayValNames = true;
}
validate();
repaint();
}
