include/vrvCore/DtVisualizerAttributeFactory.h

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/******************************************************************************
** Copyright (c) 2011 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once
#include <vrvCore/vrvCore.h>
#include <vrvCore/DtVisualizerAttribute.h>
#include <vrvUtil/DtVirtualBaseClass.h>
#include <vrvUtil/DtUnicode.h>
#include <boost/unordered_map.hpp>

namespace makVrv
{
   class DtVisualizerAttribute;
   class DtDe;

   class DT_DLL_VRVCORE DtVisualizerAttributeFactory : public DtVirtualBaseClass
   {
   public:

      class CreatorInterface
      {
      public:
         virtual ~CreatorInterface();

         virtual DtVisualizerAttribute* create() = 0;

         virtual const DtVisualizerAttribute::TypeInfo& attributeTypeInfo() const
            = 0;
      };

      template <typename Attribute>
      class Creator : public CreatorInterface
      {
      public:
         virtual DtVisualizerAttribute* create()
         {
            return new Attribute();
         }

         virtual const DtVisualizerAttribute::TypeInfo& attributeTypeInfo() const
         {
            return Attribute::theTypeInfo();
         }
      }; 

      static DtVisualizerAttributeFactory& instance(DtDe&);

      static void registerInstance(DtDe&, DtVisualizerAttributeFactory*);

      virtual ~DtVisualizerAttributeFactory();

      virtual DtVisualizerAttribute* create(const std::string& className);


      virtual DtVisualizerAttribute* create(const std::string& className,
         const DtUnicode& value);

      virtual void registerClass(CreatorInterface* creator);

   protected:
      DtVisualizerAttributeFactory(DtDe&);

   protected:
      typedef boost::unordered_map<std::string, CreatorInterface*> CreatorMap;
      CreatorMap myCreators;
      Creator<DtVisualizerAttributeString> myDefaultCreator;
      DtDe& myDe;
   };
}