Name: rm29839 Date: 10/27/97


import java.awt.*;
import java.awt.event.*;

// This is a potential bug in AWT JDK 1.1.4 on Win NT
// Problem: ActionEvent not being properly consumed ...
// Description: There is one frame and two modal dialogs. The frame contains
// a text field. To show the first modal dialog type enter in the frame.
// This in turn, will launch a modal dialog containing a text field. Now,
// the ActionEvent of this text field will launch another modal dialog
// that contains a close button, that subscribes to enter key. The ActionEvent
// in the first modal dialog doesn't consume the event, and hence get's passed
// to the second modal dialog, which responds by appearing and disappearing
// very quickly.
// Temporary Solution: Do not subsribe for action event in such text field.
// Instead, subscribe to one of the key events. The solution is also
// included in the source below, but has been commented out. So, to see
// the solution, comment out the action event, and uncomment the key
// released event.

public class misbehavingModal extends Frame {
public static void main (String[] args) {
Frame f = new misbehavingModal ();
f.pack ();
f.setSize (300, 200);
f.setVisible (true);
}

public misbehavingModal () {
setLayout (new FlowLayout ());
TextField tf = new TextField (10);
add (tf);
KeyListener kl = new KeyAdapter () {
public void keyReleased (KeyEvent ke) {
if (
(ke.getKeyCode () == KeyEvent.VK_D) ||
(ke.getKeyCode () == KeyEvent.VK_F) ||
(ke.getKeyCode () == KeyEvent.VK_ENTER)
) {
System.out.println ("Showing dialog ...");
Dialog d = new textDialog (misbehavingModal.this);
d.pack ();
d.setVisible (true);
}
}
};
tf.addKeyListener (kl);
}
}

class textDialog extends Dialog {
    public textDialog (final Frame f) {
        super (f, true);
        setLayout (new FlowLayout ());
        TextField tf = new TextField (10);
        tf.addActionListener (
            new ActionListener () {
                public void actionPerformed (ActionEvent e) {
                    almostModalDialog d = new almostModalDialog (f);
                    d.pack ();
                    d.setVisible (true);
                }
            }
        );
        /*
        tf.addKeyListener (
            new KeyAdapter () {
                public void keyReleased (KeyEvent e) {
                    if (e.getKeyCode () == KeyEvent.VK_ENTER) {
                        almostModalDialog d = new almostModalDialog (f);
                        d.pack ();
                        d.setVisible (true);
                    }
                }
            }
        );
        */
        add (tf);
    }
}

class almostModalDialog extends Dialog {
public almostModalDialog (Frame f) {
super (f, true);
setLayout (new FlowLayout ());
Button button = new Button ("Close");
ActionListener al = new ActionListener () {
public void actionPerformed (ActionEvent ae) {
dispose ();
}
};
button.addActionListener (al);
KeyListener kl = new KeyAdapter () {
public void keyReleased (KeyEvent ke) {
if (ke.getKeyCode () == KeyEvent.VK_ENTER) {
dispose ();
}
}
};
button.addKeyListener (kl);
add (button);
}

public Dimension getPreferredSize () {
return new Dimension (100, 100);
}
}
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