documented new node classes

app/node/output/viewer/viewer.cpp

@@ -15,6 +15,11 @@ QString ViewerOutput::Name()
   return tr("Viewer");
 }
 
+QString ViewerOutput::id()
+{
+  return "org.olivevideoeditor.Olive.vieweroutput";
+}
+
 QString ViewerOutput::Category()
 {
   return tr("Output");

app/node/output/viewer/viewer.h

@@ -4,6 +4,11 @@
 #include "node/node.h"
 #include "panel/viewer/viewer.h"
 
+/**
+ * @brief A bridge between a node system and a ViewerPanel
+ *
+ * Receives update/time change signals from ViewerPanels and responds by sending them a texture of that frame
+ */
 class ViewerOutput : public Node
 {
   Q_OBJECT
@@ -11,6 +16,7 @@ public:
   ViewerOutput();
 
   virtual QString Name() override;
+  virtual QString id() override;
   virtual QString Category() override;
   virtual QString Description() override;