blah.js

  onWheel (e) {
    e.stopPropagation();
    const node = ReactDOM.findDOMNode(this.refs.panes);
    if (e.nativeEvent.deltaY + node.scrollTop < 0) {
      node.scrollTop = 0;
      e.preventDefault();
    }
    if (e.nativeEvent.deltaY + node.scrollTop > node.scrollHeight - node.clientHeight) {
      node.scrollTop = node.scrollHeight - node.clientHeight;
      e.preventDefault();
    }
  }