Function _currentPosition

lib/optionList.js:35–41

(pageX, pageY)

  }

  _currentPosition(pageX, pageY) {
    this.setState({
      ...this.state,
      pageX,
      pageY
    });
  }

  _show(items, positionX, positionY, width, height, onSelect) {
    positionX = positionX - this.state.pageX;