Call parentGraph to link component to the root

src/graph/graph.cc

@@ -43,6 +43,7 @@ namespace hpp {
       {
         NodeSelectorPtr_t newNodeSelector = NodeSelector::create();
         nodeSelectors_.push_back(newNodeSelector);
+        newNodeSelector->parentGraph (wkPtr_);
         return newNodeSelector;
       }
 

src/graph/node-selector.cc

@@ -39,6 +39,7 @@ namespace hpp {
       {
         NodePtr_t newNode = Node::create();
         newNode->nodeSelector(wkPtr_);
+        newNode->parentGraph(graph_);
         orderedStates_.push_back(newNode);
         return newNode;
       }

src/graph/node.cc

@@ -37,6 +37,7 @@ namespace hpp {
       {
         EdgePtr_t newEdge = Edge::create(wkPtr_, to);
         neighbors_.push_back(newEdge);
+        newEdge->parentGraph(graph_);
         return newEdge;
       }