groups: started revision

- Removed UUIDs since we already have ptrs
- Changed input passthroughs from map to list so they'll always be added in the same order
- Fixed group copy on duplication
- Fixed group copy on clip split

app/node/group/group.h

@@ -52,9 +52,9 @@ public:
 
   void SetOutputPassthrough(Node *node);
 
-  static QString GetGroupInputIDFromInput(const NodeInput &input);
-
-  const QHash<QString, NodeInput> &GetInputPassthroughs() const
+  using InputPassthrough = QPair<QString, NodeInput>;
+  using InputPassthroughs = QVector<InputPassthrough>;
+  const InputPassthroughs &GetInputPassthroughs() const
   {
     return input_passthroughs_;
   }
@@ -66,15 +66,35 @@ public:
   static NodeInput ResolveInput(NodeInput input);
   static bool GetInner(NodeInput *input);
 
+  QString GetIDOfPassthrough(const NodeInput &input) const
+  {
+    for (auto it=input_passthroughs_.cbegin(); it!=input_passthroughs_.cend(); it++) {
+      if (it->second == input) {
+        return it->first;
+      }
+    }
+    return QString();
+  }
+
+  NodeInput GetInputFromID(const QString &id) const
+  {
+    for (auto it=input_passthroughs_.cbegin(); it!=input_passthroughs_.cend(); it++) {
+      if (it->first == id) {
+        return it->second;
+      }
+    }
+    return NodeInput();
+  }
+
 signals:
-  void InputPassthroughAdded(NodeGroup *group, const NodeInput &input);
+  void InputPassthroughAdded(olive::NodeGroup *group, const olive::NodeInput &input);
 
-  void InputPassthroughRemoved(NodeGroup *group, const NodeInput &input);
+  void InputPassthroughRemoved(olive::NodeGroup *group, const olive::NodeInput &input);
 
-  void OutputPassthroughChanged(NodeGroup *group, Node *output);
+  void OutputPassthroughChanged(olive::NodeGroup *group, olive::Node *output);
 
 private:
-  QHash<QString, NodeInput> input_passthroughs_;
+  InputPassthroughs input_passthroughs_;
 
   Node *output_passthrough_;