Added setHandled/getHandled to osgGA::GUIEventAdapter

include/osgGA/GUIEventAdapter

@@ -258,6 +258,12 @@ public:
 
         GUIEventAdapter(const GUIEventAdapter& rhs);
         
+        /** Set whether this event has been handled by an event handler or not.*/
+        void setHandled(bool handled) { _handled = handled; }
+
+        /** Get whether this event has been handled by an event handler or not.*/
+        bool getHandled() const { return _handled; }
+
         /** Get the Type of the GUI GUIEventAdapter.*/
         void setEventType(EventType Type) { _eventType = Type; }
 
@@ -394,6 +400,7 @@ public:
         /** Force users to create on heap, so that multiple referencing is safe.*/
         virtual ~GUIEventAdapter();
 
+        bool _handled;        
         EventType _eventType;
         double _time;
 

src/osgGA/GUIEventAdapter.cpp

@@ -16,6 +16,7 @@
 using namespace osgGA;
 
 GUIEventAdapter::GUIEventAdapter():
+    _handled(false),
     _eventType(NONE),
     _time(0.0),
     _windowX(0),
@@ -42,6 +43,7 @@ GUIEventAdapter::GUIEventAdapter():
 
 GUIEventAdapter::GUIEventAdapter(const GUIEventAdapter& rhs):
     osg::Referenced(),
+    _handled(rhs._handled),
     _eventType(rhs._eventType),
     _time(rhs._time),
     _windowX(rhs._windowX),

src/osgGA/GUIEventHandler.cpp

@@ -28,11 +28,11 @@ void GUIEventHandler::operator()(osg::Node* node, osg::NodeVisitor* nv)
         {
             if (handle(*(*itr), *(ev->getActionAdapter()), node, nv))
             {
-                return;
+                (*itr)->setHandled(true);
             }
         }
     }
-    traverse(node,nv);
+    if (node->getNumChildrenRequiringEventTraversal()>0) traverse(node,nv);
 }
 
 void GUIEventHandler::event(osg::NodeVisitor* nv, osg::Drawable* drawable)