/**
   * Brings up a new ExerciseBuilderDialog
   *
   * @param app application
   */
  public ExerciseBuilderDialog(App app) {
    super(false, false, null, ((AppW) app).getPanel());

    this.app = (AppW) app;
    // exerciseBuilderHandler = new ExerciseBuilderDOMHandler();
    exercise = app.getKernel().getExercise();
    if (exercise.isEmpty()) {
      exercise.initStandardExercise();
    }
    createGUI();
  }