@Override
  public void setBackgroundMode(boolean isBackgroundMode) {
    if (myIsBackgroundMode == isBackgroundMode) {
      return;
    }

    myIsBackgroundMode = isBackgroundMode;
    if (isBackgroundMode) {
      doEnableBackgroundMode();
    }
    else {
      doDisableBackgroundMode();
    }
  }
@Override
  public void setBackgroundMode(boolean isBackgroundMode)