// Copyright 2003 Nokia Corporation.
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE
// ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO
// OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR
// SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE
// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT
// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED
// BY THIRD PARTIES
//
// Furthermore, information provided in this source code is preliminary,
// and may be changed substantially prior to final release. Nokia Corporation
// retains the right to make changes to this source code at
// any time, without notice. This source code is provided for informational
// purposes only.
//
// Nokia and Nokia Connecting People are registered trademarks of Nokia
// Corporation.
// Java and all Java-based marks are trademarks or registered trademarks of
// Sun Microsystems, Inc.
// Other product and company names mentioned herein may be trademarks or
// trade names of their respective owners.
//
// A non-exclusive, non-transferable, worldwide, limited license is hereby
// granted to the Licensee to download, print, reproduce and modify the
// source code. The licensee has the right to market, sell, distribute and
// make available the source code in original or modified form only when
// incorporated into the programs developed by the Licensee. No other
// license, express or implied, by estoppel or otherwise, to any other
// intellectual property rights is granted herein.
package whiteboard;

import javax.microedition.lcdui.*;

class PromptDialog
    extends Form
    implements CommandListener
{
    private final TextField userField;
    private final TextField passwordField;
    private final Command okCommand;
    private final Command cancelCommand;
    private final Display display;
    private Displayable previousDisplayable;
    private transient boolean wasCancelled;


    PromptDialog(Display display, String realm)
    {
        super(realm);
        this.display = display;

        userField = new TextField("User:", "", 16, TextField.ANY);
        append(userField);
        passwordField = new TextField("Password:", "", 16, TextField.PASSWORD);
        append(passwordField);
        okCommand = new Command("OK", Command.OK, 2);
        addCommand(okCommand);
        cancelCommand = new Command("Cancel", Command.CANCEL, 2);
        addCommand(cancelCommand);

        setCommandListener(this);
    }


    void promptForInput()
    {
        // Warning: if previousDisplayable is an Alert, we'll fail when
        // we try to restore it.
        previousDisplayable = display.getCurrent();
        display.setCurrent(this);

        synchronized (this)
        {
            try
            {
                wait();
                // make caller wait on our monitor
            }
            catch (InterruptedException e)
            {
                // never thrown in MIDP

            }
        }
    }


    public void commandAction(Command c, Displayable d)
    {
        if (c == okCommand)
        {
            wasCancelled = false;
            display.setCurrent(previousDisplayable);
            synchronized (this)
            {
                notify();
                // wake up caller
            }
        }
        else if (c == cancelCommand)
        {
            wasCancelled = true;
            display.setCurrent(previousDisplayable);
            synchronized (this)
            {
                notify();
                // wake up caller
            }
        }
    }


    String getUsername()
    {
        String username = null;
        if (!wasCancelled)
        {
            username = userField.getString();
        }
        return username;
    }


    String getPassword()
    {
        String password = null;
        if (!wasCancelled)
        {
            password = passwordField.getString();
        }
        return password;
    }
}