tdbMetafileFactory.h

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/*********************************************************************
** Copyright (c) 1998 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: tdbMetafileFactory.h,v $ $Revision: 1.8 $ $State: Exp $
*******************************************************************************/
#ifndef tdbMetafileFactory_H_
#define tdbMetafileFactory_H_

// \file tdbMetafileFactory.h
// \brief Contains the DtTdbMetafileFactory class declaration.

#include "terrainDbFactory/terrainDbFactoryDefines.h"
#include <vlutil/vlFilename.h>
#include <vlutil/vlConfig.h>
#include <map>

class DtMetafileRecord;

// Instances of this class used as factories to create the metafile records
// used when loading supported terrain files through .map files.  The .map files
// contain metafile records, which are created through this factory, and used
// to initialize the terrain reader initializers, which are then passed to the
// terrain readers.
class DT_DLL_terrainDbFactory DtTdbMetafileFactory
{
public:
   typedef DtMetafileRecord* (*DtTdbMetafileCreatorFcn)();
   typedef std::map<DtString, DtTdbMetafileCreatorFcn> DtTdbMetafileCreatorContainer;

   // default constructor.
   DtTdbMetafileFactory();

   // copy constructor
   DtTdbMetafileFactory(const DtTdbMetafileFactory& orig);

   // assignment operator
   const DtTdbMetafileFactory& operator=(const DtTdbMetafileFactory& orig);

   // destructor
   virtual ~DtTdbMetafileFactory();

   // Registers the default creators with the factory
   virtual void init();

   // Add a creator function to the factory.
   virtual void registerTdbMetafileCreator(const DtString &type, DtTdbMetafileCreatorFcn fcn);

   virtual DtMetafileRecord* createMetafileRecord(const DtString &type) const;

protected:

   DtTdbMetafileCreatorContainer myTdbMetafileCreators;
};

#endif