forEachUnlinkedNode.js

forEachUnlinkedNode : function (nodeId, callback, oriented) {
    var graph = this,
        node = graph.getNode(nodeId),
        linkedNodeId,
        currentNodeId;

    if (node && typeof callback === 'function') {
        var linkedNodes = {};

        graph.forEachLinkedNode(nodeId, function (node) { linkedNodes[node.id] = true; }, oriented);
        
        for (currentNodeId in nodes) {
            if (nodes.hasOwnProperty(currentNodeId) &&
                !linkedNodes.hasOwnProperty(currentNodeId)) {
                callback(nodes[currentNodeId]);
            }
        }
   }
},