work towards finishing nodeview copy/paste refactor

app/widget/nodeview/nodeview.h

@@ -52,6 +52,11 @@ public:
 
   void SetContexts(const QVector<Node *> &nodes);
 
+  const QVector<Node*> &GetContexts() const
+  {
+    return contexts_;
+  }
+
   void CloseContextsBelongingToProject(Project *project);
 
   void ClearGraph();
@@ -97,11 +102,15 @@ public slots:
 
   void CenterOnItemsBoundingRect();
 
+  void CenterOnNode(olive::Node *n);
+
 signals:
   void NodesSelected(const QVector<Node*>& nodes);
 
   void NodesDeselected(const QVector<Node*>& nodes);
 
+  void NodeGroupOpenRequested(NodeGroup *group);
+
 protected:
   virtual void keyPressEvent(QKeyEvent *event) override;
 
@@ -141,6 +150,8 @@ private:
 
   QPointF GetEstimatedPositionForContext(NodeViewItem *item, Node *context) const;
 
+  Node::Position GetAssumedPositionForSelectedNode(Node *node);
+
   Menu *CreateAddMenu(Menu *parent);
 
   void PositionNewEdge(const QPoint &pos);