public DragButton(final String optionF) {
      super(optionF);
      text = optionF;
      this.addClickHandler(new ClickHandler(){
         @Override
          public void onClick(ClickEvent event) {
            if (enableClicks) {
              inputAppend(optionF);
              updateInputArea();
              sound.play();
              dropLabel.setText(constants.SELECTFIRST() +text+
                  constants.SELETESECOND());
              
            }
          }
      });
    }