DtScalingAlgorithmFactory.h

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/******************************************************************************* 
** Copyright (c) 2019 MAK Technologies, Inc. 
** All rights reserved. 
*******************************************************************************/ 


#pragma once

#include <vrvCore/vrvCore.h>
#include <vrvUtil/DtVirtualBaseClass.h>

#include <boost/unordered_map.hpp>

#include <string>

namespace makVrv 
{ 
   class DtDe;
   class DtScalingAlgorithmCreator;
   class DtScalingAlgorithm;

   class DT_DLL_VRVCORE DtScalingAlgorithmFactory : public DtVirtualBaseClass
   {
   public:
      DtScalingAlgorithmFactory(DtDe& de);

      virtual ~DtScalingAlgorithmFactory();

   public:
      static DtScalingAlgorithmFactory& instance(DtDe& de);

      static void registerInstance(DtDe& de, DtScalingAlgorithmFactory* anInstance);     

   public:
      virtual void registerCreator(DtScalingAlgorithmCreator* creator) = 0;

      virtual DtScalingAlgorithm* getOrCreate(const std::string& name) = 0;

      typedef boost::unordered_map<std::string, DtScalingAlgorithmCreator*> RegistrationMap;

      virtual const RegistrationMap& scalingAlgorithmCreators() const;

   private:
      DtScalingAlgorithmFactory();

      DtScalingAlgorithmFactory(const DtScalingAlgorithmFactory& orig);

      DtScalingAlgorithmFactory& operator=(const DtScalingAlgorithmFactory& rhs);

   protected:

      DtDe& myDe;
      RegistrationMap myCreators;
   };
}