// This example is from the book _Java AWT Reference_ by John Zukowski.
// Written by John Zukowski.  Copyright (c) 1997 O'Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or
import java.awt.*;
interface DialogHandler {
    void dialogDoer (Object o);
}
class modeTest extends Dialog {
    TextField user;
    TextField pass;
    modeTest (DialogHandler parent) {
        super ((Frame)parent, "Mode Test", true);
        add ("North", new Label ("Please enter username/password"));
        Panel left = new Panel ();
        left.setLayout (new BorderLayout ());
        left.add ("North", new Label ("Username"));
        left.add ("South", new Label ("Password"));
        add ("West", left);
        Panel right = new Panel ();
        right.setLayout (new BorderLayout ());
        user = new TextField (15);
        pass = new TextField (15);
        pass.setEchoCharacter ('*');
        right.add ("North", user);
        right.add ("South", pass);
        add ("East", right);
        add ("South", new Button ("Okay"));
        resize (250, 125);
    }
    public boolean handleEvent (Event e) {
        if (e.id == Event.WINDOW_DESTROY) {
            dispose();
            return true;
        } else if ((e.target instanceof Button) &&
             (e.id == Event.ACTION_EVENT)) {
            ((DialogHandler)getParent ()).dialogDoer(e.arg);
        }
        return super.handleEvent (e);
    }
}

public class modeFrame extends Frame implements DialogHandler {
    modeTest d;
    modeFrame (String s) {
        super (s);
        resize (100, 100);
        d = new modeTest (this);
        d.show ();
    }
    public static void main (String []args) {
        Frame f = new modeFrame ("Frame");
    }
    public boolean handleEvent (Event e) {
        if (e.id == Event.WINDOW_DESTROY) {
            hide();
            dispose();
            System.exit (0);
        }
        return super.handleEvent (e);
    }
    public void dialogDoer(Object o) {
        d.dispose();
        add ("North", new Label (d.user.getText()));
        add ("South", new Label (d.pass.getText()));
        show ();
    }
}