Hide one side of a JSplitPane by default

Question

Hi everybody,
I am using a JSplitPane and I turned on the "one touch expandable" feature. In addition to this I would like to hide the right side of the JSplitPane by default, i.e. simulate a click on one of the two "one touch expand" buttons. I have tried setting the divider location to 1.0 during creation, but does not work. It somehow respects the preferred size of the right component, so it isn't hidden. The JSplitPane is visible but not showing when I set the divider location to 1.0.
How can I force the JSplitPane to hide the right component?
Best regards,
Jethro

Answer 1

Hang on.
JSplitPane#setDividerLocation(double proportionalLocation) has no effect if the split pane is not realized. However, you can use JSplitPane#setDividerLocation(int location) to solve your problem.
Initially to hide right pane use:
// 10000 is an arbitrary high value.
pane.setDividerLocation(10000);Initially to hide left pane use:
pane.setDividerLocation(0);Here is a working example:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
* Implementation of thread 5367946.
* @author mrityunjoy_saha
* @version 1.0
public class Thread5367946 {
    private JFrame frame = null;
    public static void main(String[] args) {
        Thread5367946 t = new Thread5367946();
        t.process();
    private void process() {
        frame = new JFrame("Thread5367946");
        frame.setLayout(new BorderLayout());
        JPanel panel1=new JPanel();
        JPanel panel2=new JPanel();
        panel1.add(new JLabel("This is left panel"));
        panel2.add(new JLabel("This is right panel."));
        JSplitPane pane=new JSplitPane();
        pane.setOneTouchExpandable(true);
        // Uncomment following line to hide right pane.
        // 10000 is an arbitrary high value.
        pane.setDividerLocation(10000);
        // Uncomment following line to hide left pane
        //pane.setDividerLocation(0);       
        pane.setLeftComponent(panel1);
        pane.setRightComponent(panel2);
        frame.getContentPane().add(pane);
        frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);                
}Thanks,
Mrityunjoy
Edited by: mrityunjoy on 18 Feb, 2009 10:54 PM