Name: jk109818 Date: 11/20/2002


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)

java version "1.4.1-rc"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-rc-b19)
Java HotSpot(TM) Client VM (build 1.4.1-rc-b19, mixed mode)



FULL OPERATING SYSTEM VERSION :
Linux simia 2.4.10-4GB #1 Tue Sep 25 12:33:54 GMT 2001 i686
unknown

glibc-2.2.4-21



A DESCRIPTION OF THE PROBLEM :
The default LAF classes registered the key stroke
"typed \010" instead of "pressed BACK_SPACE" for removing
the previous character in text components.

But "typed \010" is also generated by pressing CTRL-H (on
which OSes?). As menu item accelerators are registered (and
thus consume) only for the *pressed* key event, the *typed*
action is also executed when an accelerator is registered
for CTRL-H (i.e. it also removes the character).

This is (probably) the only place where an action for a
*typed* key stroke is used at all.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Execute source code.
2. Press CTRL-H: The menu action listener is executed, *and*
the previous character is deleted.

REPRODUCIBILITY :
This bug can be reproduced always.

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

public class CtrlH
{
    public static void main(String[] args)
    {
        JMenuBar b = new JMenuBar();

        JMenu m = new JMenu("Menu");

        JMenuItem i = new JMenuItem("Action");

        i.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                System.err.println("Action");
            }
        });

        m.add(i);
        b.add(m);

        i.setAccelerator(KeyStroke.getKeyStroke("ctrl H"));


        JTextArea t = new JTextArea("kmcnxmc oarqwo4r 23894 j sjasdhajkc", 5, 40);

        t.setCaretPosition(t.getDocument().getLength());

        JFrame f = new JFrame();

        f.getContentPane().add(new JScrollPane(t));

        f.setJMenuBar(b);

        f.pack(); f.show();
    }
}
---------- END SOURCE ----------

CUSTOMER WORKAROUND :

Execute for each text component:

{
        getInputMap().put(KeyStroke.getKeyStroke("pressed
BACK_SPACE"), DefaultEditorKit.deletePrevCharAction);
        getInputMap().put(KeyStroke.getKeyStroke("typed
\010"), "none");
}

("none" being some Object that is not registered for a
enabled Action in the ActionMap)
(Review ID: 164506)
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