DtFileExtensionManager.h

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/******************************************************************************
** Copyright (c) 2011 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: DtFileExtensionManager.h,v $ $Revision: 1.7 $ $State: Exp $
******************************************************************************/


#pragma once

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

#include <boost/unordered_map.hpp>

#include <string>
#include <list>

namespace makVrv
{
   class DtDe;

   class DT_DLL_VRVCORE DtFileExtensionManager : public DtVirtualBaseClass
   {

   public:
      typedef std::list<std::string> ExtensionList;

      struct FileExtensionData
      {
         DtUnicode description;
         ExtensionList extensions;
      };

      typedef std::list<FileExtensionData> FileExtensionGroup;

      typedef boost::unordered_map<std::string, FileExtensionGroup> DialogTypeMap;

      static DtFileExtensionManager& instance(DtDe& de);

      virtual ~DtFileExtensionManager();

      virtual void addFileExtensions( const std::string& dialogType, 
         const DtUnicode& description, const ExtensionList& extensions );

      virtual void addFileExtension( const std::string& dialogType, 
         const DtUnicode& description, const std::string& extension );

      virtual void removeFileExtensions( const std::string& dialogType, 
         const ExtensionList& extensions );

      virtual void removeFileExtension( const std::string& dialogType, 
         const std::string& extension );

      virtual const FileExtensionGroup& getFileExtensions(
         const std::string& dialogType ) const;

      virtual bool isMemberOfExtensionGroup(const std::string& dialogType, const DtUnicode & extensionGroup, const std::string & ext);

   protected:

      DtFileExtensionManager(DtDe& de);

      virtual bool extensionListsMatch(const ExtensionList& extensions1, 
         const ExtensionList& extensions2 );

   protected:

      DtDe& myDe;
      DialogTypeMap myFileExtensions;
   };
}