arranged items so they are inputs of folder rather than outputs

app/node/graph.h

@@ -22,7 +22,6 @@
 #define NODEGRAPH_H
 
 #include "node/node.h"
-#include "project/item/item.h"
 
 namespace olive {
 

app/node/node.cpp

@@ -46,7 +46,8 @@ const QString Node::kDefaultOutput = QStringLiteral("output");
 Node::Node(bool create_default_output) :
   can_be_deleted_(true),
   override_color_(-1),
-  last_change_time_(0)
+  last_change_time_(0),
+  folder_(nullptr)
 {
   if (create_default_output) {
     AddOutput();
@@ -1126,7 +1127,7 @@ Node *Node::CopyNodeAndDependencyGraphMinusItemsInternal(QMap<const Node*, Node*
     Node* connected = output.node();
     Node* connected_copy;
 
-    if (dynamic_cast<Item*>(connected)) {
+    if (connected->IsItem()) {
       // This is an item and we avoid copying those and just connect to them directly
       connected_copy = connected;
     } else {
@@ -1529,7 +1530,7 @@ void GetDependenciesRecursively(QVector<Node*>& list, const Node* node, bool tra
     Node* connected_node = it->second.node();
 
     if (!exclusive_only
-        || (connected_node->outputs().size() == 1 && !dynamic_cast<Item*>(connected_node))) {
+        || (connected_node->outputs().size() == 1 && !connected_node->IsItem())) {
       if (!list.contains(connected_node)) {
         list.append(connected_node);
 

app/node/node.h

@@ -46,6 +46,7 @@
 namespace olive {
 
 class NodeGraph;
+class Folder;
 
 /**
  * @brief A single processing unit that can be connected with others to create intricate processing systems
@@ -155,6 +156,21 @@ public:
    */
   virtual QString Description() const;
 
+  const QString& ToolTip() const
+  {
+    return tooltip_;
+  }
+
+  Folder* folder() const
+  {
+    return folder_;
+  }
+
+  virtual bool IsItem() const
+  {
+    return false;
+  }
+
   /**
    * @brief Function called to retranslate parameter names (should be overridden in derivatives)
    */
@@ -162,6 +178,10 @@ public:
 
   virtual QIcon icon() const;
 
+  virtual QString duration() const {return QString();}
+
+  virtual QString rate() const {return QString();}
+
   const QVector<QString>& inputs() const
   {
     return input_ids_;
@@ -718,6 +738,11 @@ public:
   static bool Unlink(Node* a, Node* b);
   static bool AreLinked(Node* a, Node* b);
 
+  void SetFolder(Folder* folder)
+  {
+    folder_ = folder;
+  }
+
   static const QString kDefaultOutput;
 
 protected:
@@ -819,6 +844,11 @@ protected:
 
   virtual void childEvent(QChildEvent *event) override;
 
+  void SetToolTip(const QString& s)
+  {
+    tooltip_ = s;
+  }
+
 signals:
   /**
    * @brief Signal emitted whenever the position is set through SetPosition()
@@ -1137,6 +1167,10 @@ private:
 
   qint64 last_change_time_;
 
+  QString tooltip_;
+
+  Folder* folder_;
+
 private slots:
   /**
    * @brief Slot when a keyframe's time changes to keep the keyframes correctly sorted by time