timelineview is now a true view of the blocks at all times

app/node/block/block.cpp

@@ -20,6 +20,8 @@
 
 #include "block.h"
 
+#include <QDebug>
+
 Block::Block()
 {
   previous_input_ = new NodeInput();
@@ -37,6 +39,9 @@ Block::Block()
   texture_output_ = new NodeOutput();
   texture_output_->set_data_type(NodeParam::kTexture);
   AddParameter(texture_output_);
+
+  connect(this, SIGNAL(EdgeAdded(NodeEdgePtr)), this, SLOT(BlockOrderChanged(NodeEdgePtr)));
+  connect(this, SIGNAL(EdgeRemoved(NodeEdgePtr)), this, SLOT(BlockOrderChanged(NodeEdgePtr)));
 }
 
 QString Block::Category()
@@ -115,6 +120,14 @@ void Block::RefreshFollowing()
   }
 }
 
+void Block::BlockOrderChanged(NodeEdgePtr edge)
+{
+  if (edge->input() == previous_input() || edge->input() == next_input()) {
+    // The blocks surrounding this one have changed, we need to Refresh()
+    RefreshFollowing();
+  }
+}
+
 NodeOutput *Block::texture_output()
 {
   return texture_output_;

app/node/block/block.h

@@ -37,7 +37,8 @@ public:
 
   enum Type {
     kClip,
-    kGap
+    kGap,
+    kEnd
   };
 
   virtual Type type() = 0;
@@ -78,16 +79,24 @@ public slots:
    * Blocks before it are accurate and up to date. You may need to traverse through the Block list (using previous())
    * and run Refresh() on all Blocks sequentially.
    */
-  void Refresh();
+  virtual void Refresh();
 
+  /**
+   * @brief Calls Refresh() on this block and all blocks connected after it (but not before it)
+   */
   void RefreshFollowing();
 
 signals:
+  /**
+   * @brief Signal emitted when this Block is refreshed
+   *
+   * Can be used as essentially a "changed" signal for UI widgets to know when to update their views
+   */
   void Refreshed();
 
 protected:
 
-private:
+private:  
   NodeInput* previous_input_;
   NodeInput* next_input_;
   NodeOutput* block_output_;
@@ -96,6 +105,10 @@ private:
 
   rational in_point_;
   rational out_point_;
+
+private slots:
+  void BlockOrderChanged(NodeEdgePtr edge);
+
 };
 
 #endif // BLOCK_H