1 files changed, 6 insertions, 0 deletions
diff --git a/src/layer-manager.h b/src/layer-manager.h
index b4d827089..d92946a4c 100644
--- a/src/layer-manager.h
+++ b/src/layer-manager.h
@@ -13,6 +13,7 @@
 #include "document-subset.h"
 #include "gc-finalized.h"
 #include "gc-soft-ptr.h"
+#include <vector>
 
 class SPDesktop;
 class SPDocument;
@@ -34,6 +35,9 @@ public:
     }
 
 private:
+    friend class LayerWatcher;
+    class LayerWatcher;
+
     static void _objectModifiedCB( SPObject* obj, guint flags, LayerManager* mgr );
 
     void _objectModified( SPObject* obj, guint flags );
@@ -48,6 +52,8 @@ private:
     GC::soft_ptr<SPDesktop> _desktop;
     SPDocument *_document;
 
+    std::vector<LayerWatcher*> _watchers;
+
     sigc::signal<void, SPObject *>     _layer_changed_signal;
     sigc::signal<void, SPObject *>     _details_changed_signal;
 };