JComboBox : colors in the selected value field

Question

I have a JComboBox with a custom ListCellRenderer. However the JComboBox seems to change the colors of the Component that my ListCellRenderer creates when the Component is in the Selected value field. Some code is below...
import javax.swing.*;
import java.awt.*;
import java.util.*;
public class ComboBoxTest {
  public static final void main(String[] args) {
    JComboBox cbox;
    Vector elements;
    elements = new Vector();
    elements.add("One");
    elements.add("Two");
    elements.add("Three");
    cbox = new JComboBox(elements);
    cbox.setRenderer(new MyRenderer());
    cbox.setEditable(false);
    JFrame frame = new JFrame();
    JPanel content = (JPanel) frame.getContentPane();
    content.add(cbox);
    frame.pack();
    frame.setVisible(true);
class MyRenderer implements ListCellRenderer {
  public Component getListCellRendererComponent(
    JList list,
    Object value,
    int index,
    boolean isSelected,
    boolean cellHasFocus)
    String strValue;
    JLabel label;
    strValue = (String) value;
    label = new JLabel("<" + strValue + ">");
    label.setOpaque(true);
    if( isSelected ) {
      label.setForeground(Color.black);
      label.setBackground(Color.green);
    } else {
      label.setForeground(Color.white);
      label.setBackground(Color.black);
    return label;
}This code simply creates a JComboBox with 3 String values, "One", "Two", and "Three". The renderer creates a JLabel with the String value enclosed in triangle brackets. The renderer also sets the colors of the JLabel to white on black if unselected and black on green if selected.
When I run this program, the list portion of the JComboBox looks correct, but the entry in the edit field is wrong. It has the enclosing triangle brackets around the selected String, but the colors are still the default black on gray.
What do I need to do to get the colors in the edit field to display correctly?
- James

Answer 1

A JComboBox is similar to a JSpinner in the sense that it has an associated editor that has an associated textfield....check out the link shown below
http://forum.java.sun.com/thread.jsp?forum=57&thread=385077
;o)
V.V.