more work

app/widget/nodeview/nodeviewitem.h

@@ -53,7 +53,7 @@ public:
   /**
    * @brief Set the Node to correspond to this widget
    */
-  void SetNode(Node* n);
+  void SetNode(Node* n, Node *context);
 
   /**
    * @brief Get currently attached node
@@ -174,6 +174,8 @@ private:
    */
   Node* node_;
 
+  Node *context_;
+
   /**
    * @brief Cached list of node inputs
    */