Name: sv35042 Date: 10/18/2002


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]


A DESCRIPTION OF THE PROBLEM :
Setting a JFrame's FocusTraversalPolicy to
ContainerOrderFocusTraversalPolicy prevents an
InputVerifier from verifing the input of the last added
component.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
TEST 1:
1.Set a JFrame's FocusTraversalPolicy to
ContainerOrderFocusTraversalPolicy
2.Add 2 or more JTextFields to a JPanel.
3.To each JTextField add an simple InputVerifier.
4.Add the JPanel to the JFrame.
5.Enter text, that makes the InputVerifier fail, into the
last JTextField added to the JPanel.
TEST 2:
1. Remove the line of code that sets the JFrame's
FocusTraversalPolicy.
2. Repeat steps 2-5 in Test 1:

EXPECTED VERSUS ACTUAL BEHAVIOR :
In step 5 of Test 1 the expected result would be that the
InputVerifier would be called and return false. Forcing
focus to stay in the JTextField.

What actually happens is that the InputVerifier method
verify() is never called and Focus is transferred.

Removing the FocusTraversalPolicy of the JFrame allows the
InputVerifier.verify() method to be called by each
component.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
no error messages.

This bug can be reproduced always.

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

public class VerifierTest extends JPanel {
    public VerifierTest() {
setLayout( null );
JTextField tf;

add( tf = new JTextField() );
tf.setInputVerifier( new PassVerifier() );
        tf.setBounds( 60, 185, 40, 20 );

add( tf = new JTextField() );
tf.setInputVerifier( new PassVerifier() );
        tf.setBounds( 130, 185, 40, 20 );
    }

    public static void main( String[] args ) {
        JFrame frame = new JFrame();
        frame.getContentPane().add( new VerifierTest() );
        
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing( WindowEvent e ) {
                System.exit( 0 );
            }
        });
frame.setFocusTraversalPolicy(new java.awt.ContainerOrderFocusTraversalPolicy
());
        frame.setSize( 810, 500 );
        frame.setVisible( true );
    } // ENDMETHOD main


    class PassVerifier extends InputVerifier {
public boolean verify( JComponent c ) {
boolean pass;
if (((JTextField)c).getText().equals("pass"))
pass = true;
else
pass = false;
System.out.println("InputVerifier:verify() pass="+ pass );
return pass;
}
    }
}

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

CUSTOMER WORKAROUND :
Don't set a JFrame's FocusTraversalPolicy to
ContainerOrderFocusTraversalPolicy if you want the
InputVerifier to be called by every component.

Release Regression From : 1.4
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: 147035)
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