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#ifndef Watcher_SimWatcherMaker_h
#define Watcher_SimWatcherMaker_h
// -*- C++ -*-
//
// Package:     Watcher
// Class  :     SimWatcherMaker
// 
//
// Original Author:  
//         Created:  Tue Nov 22 13:03:44 EST 2005
// $Id: SimWatcherMaker.h,v 1.2 2005/11/29 18:40:25 chrjones Exp $
//

// system include files
#include <memory>

// user include files
#include "SimG4Core/Watcher/interface/SimWatcherMakerBase.h"
#include "SimG4Core/Notification/interface/SimActivityRegistryEnroller.h"

// forward declarations

template<class T>
class SimWatcherMaker : public SimWatcherMakerBase
{

   public:
      SimWatcherMaker(){}

      // ---------- const member functions ---------------------
      virtual void make(const edm::ParameterSet& p,
                        SimActivityRegistry& reg,
                        boost::shared_ptr<SimWatcher>& oWatcher,
                        boost::shared_ptr<SimProducer>& oProd
         ) const
      {
        boost::shared_ptr<T> returnValue(new T(p));
        SimActivityRegistryEnroller::enroll(reg, returnValue.get());
        oWatcher = returnValue;

        //If this is also a SimProducer, set the value
        oProd = this->getSimProducer(returnValue.get(), returnValue);
      }

   private:
      boost::shared_ptr<SimProducer>
      getSimProducer(SimProducer*, boost::shared_ptr<T>& iProd) const{
         return boost::shared_ptr<SimProducer>(iProd);
      }
      boost::shared_ptr<SimProducer>
      getSimProducer(void*, boost::shared_ptr<T>& iProd) const{
         return boost::shared_ptr<SimProducer>();
      }

};


#endif