private void showNextEntry(@Nonnull final Iterator<CreditsList> iterator) {
    if (!iterator.hasNext()) {
      gotoNextScreen();
      return;
    }

    final CreditsList list = iterator.next();
    if (Lang.getInstance().isGerman()) {
      titleLabel.setText(list.getNameGerman());
    } else {
      titleLabel.setText(list.getNameEnglish());
    }

    final List<String> names = new ArrayList<String>();
    for (final CreditsPerson person : list) {
      names.add(person.getName());
    }
    final StringBuilder builder = new StringBuilder();
    final int nameCount = names.size();
    for (int i = 0; i < nameCount; i++) {
      builder.append(names.get(i));
      if (i < (nameCount - 2)) {
        builder.append(", ");
      } else if (i < (nameCount - 1)) {
        if (Lang.getInstance().isGerman()) {
          builder.append(" und ");
        } else {
          builder.append(" and ");
        }
      }
    }
    nameLabel.setText(builder.toString());
    displayParent.layoutElements();

    displayParent.show(
        new EndNotify() {
          @Override
          public void perform() {
            displayParent.hide(
                new EndNotify() {
                  @Override
                  public void perform() {
                    showNextEntry(iterator);
                  }
                });
          }
        });
  }
  private void changeDialogTo(final String id) {
    if (!id.equals(currentMenuButtonId)) {
      int currentIndex = buttonIdList.indexOf(currentMenuButtonId);
      int nextIndex = buttonIdList.indexOf(id);

      Element nextElement = screen.findElementByName(buttonToDialogMap.get(id));
      modifyMoveEffect(
          EffectEventId.onShow, nextElement, currentIndex < nextIndex ? "right" : "left");
      nextElement.show();

      Element currentElement = screen.findElementByName(buttonToDialogMap.get(currentMenuButtonId));
      modifyMoveEffect(
          EffectEventId.onHide, currentElement, currentIndex < nextIndex ? "left" : "right");
      currentElement.hide();

      screen.findElementByName(currentMenuButtonId).stopEffect(EffectEventId.onCustom);
      screen.findElementByName(id).startEffect(EffectEventId.onCustom, null, "selected");
      currentMenuButtonId = id;
    }
  }