I have a Jpanel containing two JPanels, a chart and some controls.  Most of
the time, I don't want the controls visible.  When a user double clicks the
panel, the
controls should become visible.  I can't figure out what call to use to make
the controls JPanel visible.  .repaint() hasn't worked.  In the following
code, the
first call to showcontrols works fine.  The call from the mouseListener does
not change the screen.   I'd appreciate any wisdom on how I should make the
controls appear from the mouse listener.

Thanks

public  class chartPanel extends JPanel {
 Mouser mouser  = new Mouser();

public void main() {
boolean controlsVisible = true;
  // --------- controls for real time, history, animated,
etc --------------
       if ( controlsVisible ) showControls(); // puts the tivo controls at
the bottom of the panel
       mouser.setMainPanel( this );

       chart.addMouseListener( mouser );

   } // close constructor

   // adds controls to bottom of panel - controls don't appear when called
from Mouser
   public void showControls() {
       this.add( "South" , controls );
       final JPanel panel = this;
       //this.repaint();
   // since repaint didn't work, I tried using invokeLater
       System.out.println("scheduling repaint");
       SwingUtilities.invokeLater(new Runnable() {
           public void run() {
               panel.repaint();
               System.out.println("RePainting Later");
           }
       });

   } // show controls

   class Mouser implements java.awt.event.MouseListener {
       AbstractChartPanel mainPanel;
       TivoPanel controls;

       public void setMainPanel(AbstractChartPanel panelArg ) {
           mainPanel = panelArg;
           System.out.println("Added Mouser");
       }

       public void mouseClicked( java.awt.event.MouseEvent e ) {
           System.out.println("mouse clicked: Got mouse clicked event!");
           mainPanel.showControls();
       }
       public void mouseEntered( java.awt.event.MouseEvent e ) {}
       public void mouseExited( java.awt.event.MouseEvent e ) {}
       public void mouseReleased( java.awt.event.MouseEvent e ) {}
       public void mousePressed( java.awt.event.MouseEvent e ) {}
   } // Mouser