index.jsx

const React = require('react')

const OrgChart = ({tree, NodeComponent}) => {

  const renderChildren = (node) => {

    const hasSiblingRight = (childIndex) => {
      return (node.children || []).length > (childIndex + 1)
    };

    const hasSiblingLeft = (childIndex) => {
      return childIndex > 0
    };

    const nodeLineBelow = (
      <td colSpan={(node.children || []).length * 2} className="nodeGroupCellLines">
        <table className="nodeLineTable">
          <tbody>
            <tr>
              <td colSpan={2} className="nodeLineCell nodeGroupLineVerticalMiddle" />
              <td colSpan={2} className="nodeLineCell" />
            </tr>
          </tbody>
        </table>
      </td>
    );

    const childrenLinesAbove = (node.children || []).map((child, childIndex) => (
      <td colSpan="2" className="nodeGroupCellLines" key={childIndex}>
        <table className="nodeLineTable">
          <tbody>
            <tr>
              <td colSpan={2} className={ "nodeLineCell nodeGroupLineVerticalMiddle" + (hasSiblingLeft(childIndex) ? ' nodeLineBorderTop' : '') } />
              <td colSpan={2} className={ "nodeLineCell" + (hasSiblingRight(childIndex) ? " nodeLineBorderTop" : "") } />
            </tr>
          </tbody>
        </table>
      </td>
    ));

    const children = (node.children || []).map((child, childIndex) => (
      <td colSpan="2" className="nodeGroupCell" key={childIndex}>
        { renderChildren(child) }
      </td>
    ));

    return (
      <table className="orgNodeChildGroup">
        <tbody>
          <tr>
            <td className="nodeCell" colSpan={(node.children || []).length * 2}>
              <NodeComponent node={node}/>
            </td>
          </tr>
          <tr>
            {(node.children || []).length > 0 && nodeLineBelow}
          </tr>
          <tr>
            {childrenLinesAbove}
          </tr>
          <tr>
            {children}
          </tr>
        </tbody>
      </table>
    )
  };

  return (
    <div className="reactOrgChart">
      {renderChildren(tree)}
    </div>
  )
};

module.exports = OrgChart;