X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=lib%2FEditorGraphicBBS%2FbbsKernelEditorGraphic%2FObservable.cxx;h=a8de6d834f5ea724976a19cdd2b214acedca821a;hb=cef73d418644dcb545c7731df11c54146fe82174;hp=819f3410c324a1a36020a0f0236385944bc46978;hpb=098558ac7780900858114a8ae01fe93847d67043;p=bbtkGEditor.git

diff --git a/lib/EditorGraphicBBS/bbsKernelEditorGraphic/Observable.cxx b/lib/EditorGraphicBBS/bbsKernelEditorGraphic/Observable.cxx
index 819f341..a8de6d8 100644
--- a/lib/EditorGraphicBBS/bbsKernelEditorGraphic/Observable.cxx
+++ b/lib/EditorGraphicBBS/bbsKernelEditorGraphic/Observable.cxx
@@ -61,12 +61,16 @@ namespace bbtk
 	
 	void Observable::notifyObservers()
 	{
-		int i;
-		for(i=0;i<_observers.size();i++)
+		if(_changed)
 		{
-			_observers[i]->update();
-		}		
-		_changed=false;
+			int i;
+			
+			for(i=0;i<_observers.size();i++)
+			{
+				_observers[i]->update();
+			}
+			_changed=false;
+		}
 	}
 
     //=========================================================================                
@@ -78,6 +82,11 @@ namespace bbtk
 
 	//=========================================================================
 
+	void Observable::addObserver(Observer *observer)
+	{
+		_observers.push_back(observer);
+	}
+
 }  // EO namespace bbtk
 
 // EOF