Function isEdgeElementParent

chapter24/docs/d3-graphviz.js:412–414

(datum)

    return this._data || null;
  }
  function isEdgeElementParent(datum) {
    return datum.attributes["class"] == 'edge' || datum.tag == 'a' && datum.parent.tag == 'g' && datum.parent.parent.attributes["class"] == 'edge';
  }
  function isEdgeElement(datum) {
    return datum.parent && isEdgeElementParent(datum.parent);
  }