implement double clicking a sequence in the project explorer to open it

app/core.cpp

@@ -337,7 +337,7 @@ void Core::CreateNewSequence()
 
     Core::instance()->undo_stack()->push(aic);
 
-    Sequence::Open(new_sequence);
+    Sequence::Open(new_sequence.get());
   }
 }
 

app/panel/project/project.cpp

@@ -26,6 +26,7 @@
 #include "core.h"
 #include "panel/footageviewer/footageviewer.h"
 #include "panel/panelmanager.h"
+#include "project/item/sequence/sequence.h"
 #include "widget/menu/menushared.h"
 #include "widget/projecttoolbar/projecttoolbar.h"
 
@@ -127,7 +128,8 @@ void ProjectPanel::ItemDoubleClickSlot(Item *item)
     // Open this footage in a FootageViewer
     PanelManager::instance()->MostRecentlyFocused<FootageViewerPanel>()->SetFootage(static_cast<Footage*>(item));
   } else if (item->type() == Item::kSequence) {
-    // FIXME: Open this sequence in the Timeline
+    // Open this sequence in the Timeline
+    Sequence::Open(static_cast<Sequence*>(item));
   }
 }
 

app/project/item/sequence/sequence.cpp

@@ -39,7 +39,7 @@ Sequence::Sequence() :
 {
 }
 
-void Sequence::Open(SequencePtr sequence)
+void Sequence::Open(Sequence* sequence)
 {
   // FIXME: This is fairly "hardcoded" behavior and doesn't support infinite panels
 
@@ -49,7 +49,7 @@ void Sequence::Open(SequencePtr sequence)
 
   viewer_panel->ConnectViewerNode(sequence->viewer_output_);
   timeline_panel->ConnectTimelineNode(sequence->timeline_output_);
-  node_panel->SetGraph(sequence.get());
+  node_panel->SetGraph(sequence);
 }
 
 void Sequence::add_default_nodes()

app/project/item/sequence/sequence.h

@@ -39,7 +39,7 @@ class Sequence : public Item, public NodeGraph
 public:
   Sequence();
 
-  static void Open(SequencePtr sequence);
+  static void Open(Sequence *sequence);
 
   void add_default_nodes();