Name: jk109818 Date: 07/07/2003


FULL PRODUCT VERSION :
jdk 1.4.0, jdk 1.4.1, jdk 1.4.2

FULL OS VERSION :
Windows 2000

A DESCRIPTION OF THE PROBLEM :
A form uses 3 JTextFields: t1, t2, t3.
After pressing enter in t1 I want transfer focus to t3 and disable t1 (and sometimes t2 too).

The result of the simple test application inluded is:

After pressing return in t1, t2 receives focus.
When I disable t2 too, focus get completely lost.

bug is new in all 1.4.x, 1.3.x produced the right results.



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
control with call of requestFocsus (t3) should receive focus.
ACTUAL -
focus in wrong control or completely lost

REPRODUCIBILITY :
This bug can be reproduced always.

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

public class Test extends JFrame
{
    private JTextField t1 = new JTextField(5),
                       t2 = new JTextField(5),
                       t3 = new JTextField(5);

    public static void main(String args[]) { new Test().setVisible(true); }

    public Test()
    {
        Container c = getContentPane();
        c.setLayout(new GridLayout(1,3,5,5));
        c.add(t1);
        c.add(t2);
        c.add(t3);
        pack();

        t1.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e)
            {
                t3.requestFocus();
                t1.setEnabled(false);
                // uncomment the following line and focus
                // will be nowhere
                // t2.setEnabled(false);
            }});
    }
}

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

CUSTOMER SUBMITTED WORKAROUND :
switch order of setEnabled / requestFocus calls.

It seems that the new logic of automatic focus transfer when disabling the current focus owner causes the problem. It' doesn't recognize that there was a requestFocus call to a different control before.

It looks like the requestFocus call doesn't immediately transfer focus (like Win32-API SetFocus) but uses some kind of asynchronous notificaton. Otherwise Swing wouldn't still recognize t1 as focus owner.
(Review ID: 189643)
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