WIP on drop zone

rightDropZone.js

import React from 'react/addons';

export class RightDropZone extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      draggedOver: false
    }
  }
  render() {
    var cx = React.addons.classSet;
    var classes = cx({
      'dragged-over': this.state.draggedOver
    });
    return (
      <section
        className={classes}
        id="right-drop-zone"
        onDragOver={this.handleDragOver.bind(this)}
        style={this.state.style}
      >
        <p>Right Drop Zone</p>
      </section>
    );
  }
  handleDragOver(ev) {
    ev.preventDefault();
    this.setState({draggedOver: true})
  }
}