Name: yyT116575			Date: 03/12/2001


C:\>java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

The cursor for a password field does not seem to be correctly reset for a
when the field is cleared using setText(""). Please run the following code to
see this problem.

/**
* Simple class to demonstrate a problem (?) with JPasswordField.
* Problem detected on an NT machine running Java version:
*
*  C:\>java -version
*  java version "1.3.0"
*  Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
*  Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)
*
* The problem: The cursor does not seem to be correctly reset for a
* JPasswordField when the field is cleared using setText("")
*
* To replicate: Run this class. A dialog is shown 3 times. It prompts
* for a user-id and a password.
*
* When appears for the first time, enter any text (say 5 or 6 chars)
* at BOTH the user-id and password fields. Press the OK button.
*
* When the dialog appears for the SECOND time, enter some text at
* the user-id field and then TAB (ie: do NOT use the mouse) to the
* password field. Note that the cursor is NOT at the start of the
* field, but is still at the end of the previously entered text for
* the field, even through the text is no longer displayed!!
*
* The third display of the dialog is just an example of using the
* Caret of the JPasswordField to force it to display correctly when
* you TAB to the password field.
*
* This problem may (??) be related to bug 4139009
*/

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

public class TestPwdProblem extends JFrame {
  private JPanel TestPwdPanel;
  private JTextField idText;
  private JPasswordField pwdText;

  public static void main(String[] args) {
    int val;
    TestPwdProblem tpp = new TestPwdProblem();

    val = JOptionPane.showOptionDialog(tpp, tpp.getPanel(), null,
        JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE,
        null, null, null);

    tpp.resetThatFails(); // 'Clear' the user-id and password fields!

    val = JOptionPane.showOptionDialog(tpp, tpp.getPanel(), null,
        JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE,
        null, null, null);

    tpp.resetThatWorks();

    val = JOptionPane.showOptionDialog(tpp, tpp.getPanel(), null,
        JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE,
        null, null, null);
  }

  public TestPwdProblem() {
    TestPwdPanel = new JPanel();

    idText  = new JTextField(20);
    pwdText = new JPasswordField(20);

    JLabel idLabel = new JLabel("User id");
    JLabel pwdLabel = new JLabel("Password");

    GridBagLayout gbl = new GridBagLayout();
    GridBagConstraints gbc = new GridBagConstraints();

    TestPwdPanel.setLayout(gbl);

    gbc.fill = GridBagConstraints.NONE;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.insets = new Insets(4, 4, 4, 10);
    gbl.setConstraints(idLabel, gbc);
    TestPwdPanel.add(idLabel);

    gbc.gridwidth = GridBagConstraints.REMAINDER;
    gbc.insets = new Insets(4, 0, 4, 4);
    gbl.setConstraints(idText, gbc);
    TestPwdPanel.add(idText);

    gbc.gridwidth = 1;
    gbc.insets = new Insets(0, 4, 4, 10);
    gbl.setConstraints(pwdLabel, gbc);
    TestPwdPanel.add(pwdLabel);

    gbc.gridwidth = GridBagConstraints.REMAINDER;
    gbc.fill = GridBagConstraints.HORIZONTAL;
    gbc.insets = new Insets(0, 0, 4, 4);
    gbl.setConstraints(pwdText, gbc);
    TestPwdPanel.add(pwdText);
  }

  public JPanel getPanel() {
    return (TestPwdPanel);
  }

  public void resetThatFails() {
    idText.setText("");
    pwdText.setText("");
  }

  public void resetThatWorks() {
    idText.setText("");

    pwdText.setText("");
    Caret c = pwdText.getCaret();
    c.setDot(0);
  }
}
(Review ID: 118355) 
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