FULL PRODUCT VERSION :
java version "1.6.0-rc"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-rc-b71)
Java HotSpot(TM) Client VM (build 1.6.0-rc-b71, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Linux localhost.localdomain 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686 i686 i386 GNU/Linux

EXTRA RELEVANT SYSTEM CONFIGURATION :
gnome 2.10.0

A DESCRIPTION OF THE PROBLEM :
In an ActionListener on the tray icon,
if i try to remove the tray icon from the system tray i get an
exception.

This bug is not a duplicate of 6299866.

On gnome, when i double-clicked on the tray icon,
it runs the actionlistener that remove the tray icon but
because i clicked on the tray icon, it tries to display the
tooltip.
I think the tray icon peer doesn't check if its removal
when it displays the tooltip.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
add an image in the same directory that the class and
run the class.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
no exception, the tray icon is removed

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "AWT-EventQueue-0" java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location
at java.awt.Component.getLocationOnScreen_NoTreeLock(Component.java:1787)
at java.awt.Component.getLocationOnScreen(Component.java:1761)
at sun.awt.X11.XTrayIconPeer.getLocationOnScreen(XTrayIconPeer.java:338)
at sun.awt.X11.XTrayIconPeer.getBounds(XTrayIconPeer.java:342)
at sun.awt.X11.XTrayIconPeer.access$200(XTrayIconPeer.java:23)
at sun.awt.X11.XTrayIconPeer$Tooltip$2$1.run(XTrayIconPeer.java:561)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.X11.XTrayIconPeer$Tooltip$2.run(XTrayIconPeer.java:559)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/*
 * Created on 12 févr. 2006
 *
 */
package fr.umlv.ui.desktop;

import java.awt.AWTException;
import java.awt.Image;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;

public class TrayIconTooltipBug {

  public static void main(String[] args) throws AWTException {
    final SystemTray tray=SystemTray.getSystemTray();
    
    Image camera=new ImageIcon(TrayIconTooltipBug.class.getResource("camera.jpg")).getImage();
    
    PopupMenu popup=new PopupMenu();
    final TrayIcon trayIcon=new TrayIcon(camera,"Snapshot",popup);
    trayIcon.setImageAutoSize(true);
    
    trayIcon.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent event) {
        tray.remove(trayIcon);
      }
    });
    tray.add(trayIcon);
    
    MenuItem exit=new MenuItem("Exit");
    exit.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        System.exit(0);
      }
    });
  }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
create a thread, wait a time greater than the tooltip time
(here 3 seconds) ant then remove the tray icon.

trayIcon.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent event) {
        new Thread() {
          @Override public void run() {
            try {
              Thread.sleep(3000);
            } catch (InterruptedException e) {
              e.printStackTrace();
            }
            EventQueue.invokeLater(new Runnable() {
              public void run() {
                tray.remove(trayIcon);
              }
            });
          }
        }.start();
      }
    });