Tough JSlider TableCellRenderer Problem!

Question

Hi,
Ive been doing some work with tables and it involved using alot of different components in them. The only one that i cant get to work is JSlider. Using JSlider as a custom TableCellEditor seems to work fine, but it doesnt see to draw itself as a TableCellRenderer. Below I have some code that seems to illustrate the problem.
So my question is : has anyone ever used JSlider suceesfully as a TableCellRenderer? If so, got a demonsration or something you had to do? If you have problems too can you think of any way around it (either a hack to get it to work or some other component that looks/works the same)?
Well I hope this doesnt come down to writing my own JSlider... Anyway, thanks in advance for any help...
Joshua
Here is the code. What it does is makes a simple application with a table in it, with integers as values in the center panel. The cell renderer is a panel with a button and a JSlider in it (the slider has a border and the background is set to white to show where is should be). In the bottom panel of the app is the slider panel how it is drawn when it is not in a table.
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JSlider;
import javax.swing.JScrollPane;
import javax.swing.JButton;
import javax.swing.table.TableColumn;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.AbstractTableModel;
import java.awt.FlowLayout;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Color;
import javax.swing.BorderFactory;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
* A main frame with a table in it... wish it painted sliders in the table
public class TestSliderTable extends JFrame
    public TestSliderTable()
        addWindowListener(new WindowAdapter()
            public void windowClosing(WindowEvent evt)
                System.exit(0);
        setUpTable();
    private void setUpTable()
        JTable table = new JTable(new SomeDumbTableModel())
            public TableCellRenderer getCellRenderer(int row, int column)
                return new JSliderTableCellRenderer();
        table.setRowHeight(50);
        //make a center panel, with a ScrollPane with the table in it
        JPanel panel = new JPanel();
        panel.setLayout(new BorderLayout());
        JScrollPane pane = new JScrollPane(table);
        JPanel flowPanel = new JPanel();
        flowPanel.setLayout(new FlowLayout());
        flowPanel.add(pane);
        panel.add(flowPanel, BorderLayout.CENTER);
        //make a panel on the bottom to just show the component
        panel.add(new JSliderTableCellRenderer(), BorderLayout.SOUTH);
        setContentPane(panel);
        pack();
    public static void main(String[] args)
        TestSliderTable frame = new TestSliderTable();
        frame.setVisible(true);
* A simple cell renderer that should render sliders...
class JSliderTableCellRenderer extends JPanel
    implements TableCellRenderer
    JSlider slider;
    JButton button;
    /** Creates new JSliderTableCellRenderer */
    public JSliderTableCellRenderer()
        super();
        slider = new JSlider(0, 10, 5);
        slider.setBackground(Color.white); //did this so you can see where the slider should be
        button = new JButton(">>>");
        setLayout(new FlowLayout());
        add(button);
        add(slider);
        add(button);
        slider.setBorder(BorderFactory.createLineBorder(Color.black));
    public Component getTableCellRendererComponent(JTable table, Object value,
                                                    boolean p3, boolean p4,
                                                    int row, int column)
        int newValue = ((Integer)value).intValue();
        slider.setValue(newValue);
        return this;
* a simple table model with Integers as values...
class SomeDumbTableModel extends AbstractTableModel
    public SomeDumbTableModel() { }
    public int getRowCount() { return 10; }
    public int getColumnCount() { return 1; }
    public Object getValueAt(int row, int column) { return new Integer(row); }
}

Answer 1

I tried adapting this from a JButtonTable example, but gave up.
http://forum.java.sun.com/thread.jsp?forum=57&thread=121545
It's got a problem in that the slider doesn't show up until the cell has focus. I was going to set the value field too, but I'm going home to dinner. Good Luck!
package test;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
public class JButtonTableExample extends JFrame {
  public static void main(String[] args) {
    JButtonTableExample frame = new JButtonTableExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
    frame.setSize( 400, 100 );
    frame.setVisible(true);
  public JButtonTableExample() {
    super( "JButtonTable Example" );
    DefaultTableModel dm = new DefaultTableModel() {
      public boolean isCellEditable(int rowIndex, int columnIndex) {
     if (columnIndex == 1) return false;
     return true;
    dm.setDataVector(new Object[][]{{"x","1"},
     {"y","2"}},
     new Object[]{"Slider","Value"});
    JTable table = new JTable(dm);
//    editor.addCellEditorListener(new MyListener(table, 1, "Side A", "Side B"));
    table.getColumn("Slider").setCellRenderer(new SliderRenderer());
    SliderEditor seditor = new SliderEditor(50);
    table.getColumn("Slider").setCellEditor(seditor);
    getContentPane().add(new JScrollPane(table));
  class SliderRenderer extends JSlider implements TableCellRenderer {
    public SliderRenderer() {
      this.setOpaque(true);
    public Component getTableCellRendererComponent(JTable table, Object value,
       boolean isSelected, boolean hasFocus, int row, int column) {
      if (isSelected) {
     setForeground(table.getSelectionForeground());
     setBackground(table.getSelectionBackground());
      } else{
     setForeground(table.getForeground());
     setBackground(UIManager.getColor("Button.background"));
//      this.setText( (getValue()==null) ? "" : getValue.toString() );
      return this;
  class SliderEditor extends DefaultCellEditor {
    protected JSlider slider;
    public SliderEditor(int Value) {
      super(new JCheckBox());
      slider = new JSlider();
      slider.setOpaque(true);
      slider.setValue(Value);
//      slider.addActionListener(new ActionListener() {
//     public void actionPerformed(ActionEvent e) {
//       fireEditingStopped();
    public Component getTableCellEditorComponent(JTable table, Object value,
       boolean isSelected, int row, int column) {
      if (isSelected) {
     slider.setForeground(table.getSelectionForeground());
     slider.setBackground(table.getSelectionBackground());
      } else{
     slider.setForeground(table.getForeground());
     slider.setBackground(table.getBackground());
      return slider;
    public Object getCellEditorValue() {
      return new Integer(slider.getValue());
    public boolean stopCellEditing() {
      return super.stopCellEditing();
    protected void fireEditingStopped() {
      super.fireEditingStopped();
}