DtTemplatedModelInstanceCreator.h

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/*****************************************************************************
 * Copyright (c) 2020 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/


#pragma once

#include <vrvCore/vrvCore.h>
#include <vrvCore/DtDe.h>

#include <vrvCore/DtModelInstance.h>
#include <vrvCore/DtModelInstanceFactory.h>

namespace makVrv
{
   template <typename ModelInstanceClass>
   inline const char* modelInstanceClassName(void) = delete;

   template <typename ModelInstanceClass>
   inline const char* modelInstanceObjectClass(void) = delete;

   enum DtObjectClassCreatorLocation
   {
      FRONT = 0, BACK = 1, NONE = 2
   };

   template<class ModelInstanceClass>
   class DtTemplatedModelInstanceCreator : public DtModelInstanceCreator
   {
   public:
      static void registerCreator(DtDe& de, DtObjectClassCreatorLocation location);

      virtual ~DtTemplatedModelInstanceCreator();

      virtual DtModelInstance* create(DtDe& de);
   protected:
      DtTemplatedModelInstanceCreator();
   };

   template<class ModelInstanceClass>
   DtTemplatedModelInstanceCreator<ModelInstanceClass>::DtTemplatedModelInstanceCreator()
   {
      // no op
   }

   template<class ModelInstanceClass>
   DtTemplatedModelInstanceCreator<ModelInstanceClass>::~DtTemplatedModelInstanceCreator()
   {
      // no op
   }

   template<class ModelInstanceClass>
   DtModelInstance* DtTemplatedModelInstanceCreator<ModelInstanceClass>::create(DtDe& de)
   {
      return new ModelInstanceClass(de);
   }

   template<class ModelInstanceClass>
   void DtTemplatedModelInstanceCreator<ModelInstanceClass>::registerCreator(DtDe& de, DtObjectClassCreatorLocation location)
   {
      DtModelInstanceFactory::instance(de).registerModelInstanceCreator(
         modelInstanceClassName<ModelInstanceClass>(),
         new DtTemplatedModelInstanceCreator<ModelInstanceClass>());
      if (location == FRONT)
      {
         DtModelInstanceFactory::instance(de).addObjectClassCreatorToFront(
            modelInstanceObjectClass<ModelInstanceClass>(), modelInstanceClassName<ModelInstanceClass>());
      }
      else if (location == BACK)
      {
         DtModelInstanceFactory::instance(de).addObjectClassCreatorToBack(
            modelInstanceObjectClass<ModelInstanceClass>(), modelInstanceClassName<ModelInstanceClass>());
      }
      else if (location == NONE)
      {
         // ignore
      }
   }
}