Name: nt126004 Date: 09/12/2001


java version "1.4.0-beta2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta2-b77)
Java HotSpot(TM) Client VM (build 1.4.0-beta2-b77, mixed mode)


Once DefaultFocusManager.getCurrentManager() or
DefaultFocusManager.setCurrentManager() are executed, tabbing stops working in
a UNIX environment. Shift-TAB still works. When getCurrentKeyboardFocusManager
() is used instead, tabbing works correctly.

This is a problem for us since it impacts compatibility between 1.3 & 1.4. We
would like to know if this can be fixed by the production release, or if you
have suggestions on an easy work around.

Example code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.lang.reflect.*;

public class Test2 extends JFrame implements ActionListener {
  private JButton btnQuit = new JButton("Quit");

  private JLabel lblEnterStudy = new JLabel("Study: ");
  private JTextField txtStudy = new JTextField(10);
  private JLabel lblEnterSubj = new JLabel("Subject: ");
  private JTextField txtSubj = new JTextField(10);

  public Test2() {
    super("Test");
    setBounds( 300,100,500,600);

    FocusManager fm = DefaultFocusManager.getCurrentManager();
    // this however works:
    // KeyboardFocusManager fm =
                       // DefaultFocusManager.getCurrentKeyboardFocusManager();
 
    createTopDisplay();
   
    // Upon a close, we should do nothing by default: this allows for a user
    // to return to his/her editing session if he/she accidentally hit the
"close"
    // button before saving changes made to data.
    setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);

    pack();

    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
       System.exit(0);
      }
    });
    
    Dimension d = getToolkit().getScreenSize();
    setSize(500, 100);
    setLocation((int)(d.getWidth()/2 - getWidth()/2), (int)(d.getHeight()/2-
getHeight()/2));
    setVisible(true);
  }

  private void createTopDisplay() {
    Container Win = getContentPane();
    JPanel top = new JPanel(new FlowLayout(FlowLayout.LEFT));
    Box topBox = new Box(BoxLayout.Y_AXIS);
    topBox.add(top);

    top.add(lblEnterStudy);
    txtStudy.addActionListener(this);
    top.add(txtStudy);
    top.add(Box.createHorizontalStrut(10));
    top.add(lblEnterSubj);
    txtSubj.addActionListener(this);
    top.add(txtSubj);
    top.add(btnQuit);
    btnQuit.addActionListener(this);
    Win.add(topBox, BorderLayout.NORTH);
  }

  
  public static void main(String[] x) {
    new Test2();
  }

  public void actionPerformed(ActionEvent e) {
    Object c = e.getSource();
    if (c == btnQuit) {
      System.out.println("actionPerformed() btnQuit pressed");
      System.exit(0);
    } else if (c==txtStudy || c==txtSubj) {
      System.out.println("actionPerformed() on text component");
    }
  }
}
(Review ID: 131576)
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