implemented node groups

app/render/previewautocacher.cpp

@@ -373,6 +373,9 @@ void PreviewAutoCacher::AddNode(Node *node)
   // Add to project
   copy->setParent(&copied_project_);
 
+  // Copy UUID
+  copy->SetUUID(node->GetUUID());
+
   // Insert into map
   InsertIntoCopyMap(node, copy);
 

app/render/previewautocacher.h

@@ -24,8 +24,9 @@
 #include <QtConcurrent/QtConcurrent>
 
 #include "config/config.h"
-#include "node/graph.h"
 #include "node/color/colormanager/colormanager.h"
+#include "node/graph.h"
+#include "node/group/group.h"
 #include "node/node.h"
 #include "node/output/viewer/viewer.h"
 #include "node/project/project.h"
@@ -172,6 +173,7 @@ private:
 
   QVector<QueuedJob> graph_update_queue_;
   QHash<Node*, Node*> copy_map_;
+  QHash<NodeGraph*, NodeGraph*> graph_map_;
   ViewerOutput* copied_viewer_node_;
   ColorManager* copied_color_manager_;
   QVector<Node*> created_nodes_;