Name: jk109818 Date: 07/31/2002


FULL PRODUCT VERSION :
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

FULL OPERATING SYSTEM VERSION :
Windows NT Version 4.0
ServicePack 5

A DESCRIPTION OF THE PROBLEM :
Suppose the focus of your swing application is located in a
JInternalFrame. When you press the ESCAPE key, the
corresponding KeyEvent is consumed by the JDestopPane und
not delivered to the parent component of the JDesktopPane.

For example if the accelerotor of a JMenuItem is set to
ESCAPE, the JMenuItem is never invoked if you press ESCAPE
and the focus is inside of an JInternalFrame.

I know that the ESCAPE key is designed for cancelling
resizing (CTRL+F8)and moving (CTRL+F7) of JInternalFrames,
but the KeyEvent is always consumed, not just when I am
actually moving or resizing an JInternalFrame.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile and start the example application below
2. Set the cursor (focus) into the JTextArea contained in
the JInternalFrame
3. Press ESCAPE and the JMenuItem registered to the ESCAPE-
Key is not invoked because the KeyEvent is consumed by the
JDesktopPane

EXPECTED VERSUS ACTUAL BEHAVIOR :
The KeyEvent belonging to the pressed ESCAPE key shout not
be consumed by the JDesktopPane.
Instead it shoulb be delivered to the parent component.
Pression the ESCAPE-Key in my sample application shout
invoke the associated JMenuItem whether or not i'm in an
JInternalFrame.

This bug can be reproduced rarely.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class EscapeTest{
public static void main(String[] argv){
final JFrame f=new JFrame();
JMenu m=new JMenu("Submenu");
JMenuItem mi=new JMenuItem("ESCAPE menu item");
JMenuBar mb=new JMenuBar();
mb.add(m);
m.add(mi);
f.setJMenuBar(mb);
f.setBounds(50,50,400,400);

// set the ESCAPE-Key as accelerator for the MenuItem
mi.setAccelerator(KeyStroke.getKeyStroke("ESCAPE"));

// add an ActionListener to the MenuItem that shows a message
if the menuItem is invoked
// the action can be invoked by
// - selecting the menu
// - pressing the ESCAPE key
mi.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent ae){
JOptionPane.showMessageDialog
(f, "ESCAPE menu item invoked.", "Exit", JOptionPane.INFORMATION_MESSAGE);
}
}
);

// create a JDesktopPane and a JInternalFrame
JDesktopPane desktopPane=new JDesktopPane();
JInternalFrame internalFrame=new JInternalFrame("Internal
frame", true, true, true, true);
internalFrame.setBounds(10,10,300,100);
desktopPane.add(internalFrame);
internalFrame.setVisible(true);
// add a JTextArea to the JInternalFrame
internalFrame.getContentPane().add(new JTextArea("Press ESCAPE
here and the JMenuItem will\nNOT be invoked!"));

JSplitPane splitPane=new JSplitPane(JSplitPane.VERTICAL_SPLIT);
splitPane.setTopComponent(desktopPane);
splitPane.setBottomComponent(new JTextArea("Press ESCAPE here
and the JMenuItem will be invoked!"));
splitPane.setDividerLocation(200);

f.getContentPane().add(splitPane);

// show the Frame
f.show();
}
}

---------- END SOURCE ----------
(Review ID: 145634)
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