LoginPage

public class LoginPage extends WebPage
{
  Logger logger = LoggerFactory.getLogger(getClass());

  @Inject
  private UserService userService;

  private boolean successful = false;

  public LoginPage(final PageParameters pps , final ModalWindow window)
  {
    super(pps);

    final TextField<String> usernameField = new RequiredTextField<String>("usernameField" , new Model<String>());
    final PasswordTextField passwordField = new PasswordTextField("passwordField" , new Model<String>());
    Form<Void> form = new Form<Void>("form");

    form.add(new AjaxButton("submit")
    {
      @Override
      protected void onSubmit(AjaxRequestTarget target, Form<?> form)
      {
        String username = usernameField.getModelObject();
        String password = passwordField.getModelObject();

        logger.info("submit onSubmit() : username = {}", username);

        User user = userService.login(username, password);
        if (user != null)
        {
          logger.info("username / password correct . user = {}" , user);
          // do something in cookie ...
          Cookie cookie = // ....
          ((WebResponse)getRequestCycle().getResponse()).addCookie(cookie);

          successful = true;
          window.close(target);
        }
        else
          logger.warn("login failed : {}" , username);
      } // onSubmit()
    });

    form.add(new AjaxButton("cancel")
    {
      @Override
      protected void onSubmit(AjaxRequestTarget target, Form<?> form)
      {
        logger.info("cancel onSubmit()");
        window.close(target);
      }
    });

    form.add(usernameField);
    form.add(passwordField);

    add(form);
  }

  public boolean isSuccessful()
  {
    return successful;
  }

  public void setSuccessful(boolean successful)
  {
    this.successful = successful;
  }

}