JFormattedTextField - NumberFormat interferes with selectAll()

From:

"Jeff Higgins" <oohiggins@yahoo.com>

Newsgroups:

comp.lang.java.help

Date:

Sun, 8 Apr 2007 21:23:03 -0400

Message-ID:

<GzgSh.404$%l4.357@newsfe04.lga>

Hi,

  I have a JPanel with two JFormattedTextFields.
I wish to configure them with NumberFormat and
InputVerifiers. I also wish to set my own
FocusTraversalKeys on the JPanel and to use the
JFormattedTextField.selectAll() method upon the
FOCUS_GAINED event.

The problem I'm having with the following code is:

When I construct the JFormattedTextFields with a
NumberFormat, the selectAll() method seems to have
no effect.

When I construct the JFormattedTextFields without a
NumberFormat, the selectAll() method seems to work
as I had expected; the JFormattedTextField gaining
focus has it's text selected.

Can someone tell what I'm doing wrong, or what else
I need to do to get my desired behavior?

Thanks,
Jeff Higgins

import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
import javax.swing.*;

public class Test extends JPanel
implements FocusListener {

  private JLabel test1Label;
  private JLabel test2Label;
  private JFormattedTextField test1Field;
  private JFormattedTextField test2Field;

  public Test() {
    super(new BorderLayout());

    test1Label = new JLabel("Test One");
    test2Label = new JLabel("Test Two");

    test1Field = new JFormattedTextField(NumberFormat.getIntegerInstance());
    test1Field.setColumns(10);
    test1Field.addFocusListener(this);

    test2Field = new JFormattedTextField(NumberFormat.getNumberInstance());
    test2Field.setColumns(10);
    test2Field.addFocusListener(this);

    test1Label.setLabelFor(test1Field);
    test2Label.setLabelFor(test2Field);

    JPanel labelPane = new JPanel(new GridLayout(0,1));
    labelPane.add(test1Label);
    labelPane.add(test2Label);

    JPanel fieldPane = new JPanel(new GridLayout(0,1));
    fieldPane.add(test1Field);
    fieldPane.add(test2Field);

    Set<AWTKeyStroke> newForwardKeys = new HashSet<AWTKeyStroke>(1);
    newForwardKeys.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_TAB,0));
    newForwardKeys.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER,0));

    fieldPane.setFocusTraversalKeys(
        KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
        Collections.unmodifiableSet(newForwardKeys));

    setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
    add(labelPane, BorderLayout.CENTER);
    add(fieldPane, BorderLayout.LINE_END);
  }

  public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }

  private static void createAndShowGUI() {
    JFrame frame = new JFrame("Test Focus");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JComponent newContentPane = new Test();
    newContentPane.setOpaque(true);
    frame.setContentPane(newContentPane);
    frame.pack();
    frame.setVisible(true);
  }

  public void focusGained(FocusEvent e) {
    ((JFormattedTextField)e.getComponent()).selectAll();
  }

  public void focusLost(FocusEvent e) {}
}