/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/Fireworks/Core/src/FWSimpleProxyHelper.cc

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// -*- C++ -*-
//
// Package:     Core
// Class  :     FWSimpleProxyHelper
//
// Implementation:
//     <Notes on implementation>
//
// Original Author:  Chris Jones
//         Created:  Tue Dec  2 15:13:22 EST 2008
// $Id: FWSimpleProxyHelper.cc,v 1.7 2013/02/18 23:42:56 wmtan Exp $
//

// system include files
#include <sstream>
#include <cassert>

#include "FWCore/Utilities/interface/ObjectWithDict.h"
#include "FWCore/Utilities/interface/TypeWithDict.h"
#include "TClass.h"

// user include files
#include "Fireworks/Core/interface/FWSimpleProxyHelper.h"
#include "Fireworks/Core/interface/FWEventItem.h"


//
// constants, enums and typedefs
//

//
// static data member definitions
//

//
// constructors and destructor
//
FWSimpleProxyHelper::FWSimpleProxyHelper(const std::type_info& iType) :
   m_itemType(&iType),
   m_objectOffset(0)
{
}

// FWSimpleProxyHelper::FWSimpleProxyHelper(const FWSimpleProxyHelper& rhs)
// {
//    // do actual copying here;
// }

//FWSimpleProxyHelper::~FWSimpleProxyHelper()
//{
//}

//
// assignment operators
//
// const FWSimpleProxyHelper& FWSimpleProxyHelper::operator=(const FWSimpleProxyHelper& rhs)
// {
//   //An exception safe implementation is
//   FWSimpleProxyHelper temp(rhs);
//   swap(rhs);
//
//   return *this;
// }

//
// member functions
//
void
FWSimpleProxyHelper::itemChanged(const FWEventItem* iItem)
{
   if(0!=iItem) {
      edm::TypeWithDict baseType(*m_itemType);
      edm::TypeWithDict mostDerivedType(*(iItem->modelType()->GetTypeInfo()));
      // The - sign is there because this is the address of a derived object minus the address of the base object.
      m_objectOffset = -mostDerivedType.getBaseClassOffset(baseType);
   }
}

//
// static member functions
//