Name: jk109818 Date: 04/24/2002


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 :
Microsoft Windows 2000 [Version 5.00.2195]
Service Pack 2


A DESCRIPTION OF THE PROBLEM :
When an editable JComboBox is modified using the keyboard
instead of the mouse, it's FocusListener will cause it to
reaquire focus when handling a FocusLost event. Note that
this only happens with using the Windows LookAndFeel
because WindowsComboBoxUI$WindowsComboBoxEditor.setItem()
calls selectAll(). The following trace shows the sequence:

java.lang.Exception: Stack trace
        at java.lang.Thread.dumpStack(Thread.java:1071)
        at java.awt.Component.requestFocus
(Component.java:5862)
        at javax.swing.JComponent.requestFocus
(JComponent.java:1101)
        at
javax.swing.plaf.basic.BasicComboBoxEditor.selectAll
(BasicComboBoxEditor.java:82)
        at
com.sun.java.swing.plaf.windows.WindowsComboBoxUI$WindowsCom
boBoxEditor.setItem(WindowsComboBoxUI.java:99)
        at javax.swing.JComboBox.configureEditor
(JComboBox.java:1335)
        at
javax.swing.plaf.basic.BasicComboBoxUI$ListDataHandler.conte
ntsChanged(BasicComboBoxUI.java:549)
        at javax.swing.AbstractListModel.fireContentsChanged
(AbstractListModel.java:100)
        at javax.swing.DefaultComboBoxModel.setSelectedItem
(DefaultComboBoxModel.java:88)
        at javax.swing.JComboBox.actionPerformed
(JComboBox.java:1250)
        at
javax.swing.plaf.basic.BasicComboBoxUI$EditorFocusListener.f
ocusLost(BasicComboBoxUI.java:1562)
        at java.awt.AWTEventMulticaster.focusLost
(AWTEventMulticaster.java:168)
        at java.awt.Component.processFocusEvent
(Component.java:4927)
        at java.awt.Component.processEvent
(Component.java:4809)
        at java.awt.Container.processEvent
(Container.java:1380)
        at java.awt.Component.dispatchEventImpl
(Component.java:3526)
        at java.awt.Container.dispatchEventImpl
(Container.java:1437)
        at java.awt.Component.dispatchEvent
(Component.java:3367)
        at java.awt.KeyboardFocusManager.redispatchEvent
(KeyboardFocusManager.java:1700)
        at
java.awt.DefaultKeyboardFocusManager.typeAheadAssertions
(DefaultKeyboardFocusManager.java:709)
        at
java.awt.DefaultKeyboardFocusManager.dispatchEvent
(DefaultKeyboardFocusManager.java:442)
        at java.awt.Component.dispatchEventImpl
(Component.java:3396)
        at java.awt.Container.dispatchEventImpl
(Container.java:1437)
        at java.awt.Component.dispatchEvent
(Component.java:3367)
        at java.awt.EventQueue.dispatchEvent
(EventQueue.java:445)
        at com.isscorp.ISSAppl$MyEventQueue.dispatchEvent
(ISSAppl.java:163)
        at
java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchThread.java:190)
        at
java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThread.java:144)
        at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:138)
        at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:130)
        at java.awt.EventDispatchThread.run
(EventDispatchThread.java:98)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.While using the Windows LookAndFeel, create a JFrame
containing an editable JComboBox and make the JFrame
visible.
2.Using the keyboard, modify the value of the JComboBox.
3.Tab out of the field. The field will re-aquire focus.

EXPECTED VERSUS ACTUAL BEHAVIOR :
Focus should move to the next focusable field. Instead,
the current field re-aquires focus.

This bug can be reproduced always.

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

public class MyTest extends JFrame {

// Pass "YES" to create editable JComboBox, or "NO" to create
// an uneditable JComboBox.
public static void main(String args[]) {
try {
UIManager.setLookAndFeel
(UIManager.getSystemLookAndFeelClassName());
}
catch (Exception e) {
System.out.println(e);
}

MyTest myTest = new MyTest(args[0].equalsIgnoreCase("yes"));
myTest.setVisible(true);
}

public MyTest(boolean editable) {
super("Test");

String options[] = new String[] {"One", "Two"};
JComboBox cb = new JComboBox(options);
cb.setEditable(editable);
getContentPane().add(cb, BorderLayout.WEST);

JTextField tf = new JTextField(10);
getContentPane().add(tf, BorderLayout.EAST);

pack();
}
}
---------- END SOURCE ----------

Release Regression From : 1.3.1_03
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.

(Review ID: 145137)
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