vectorDataFactory.h

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/*******************************************************************************
** Copyright (c) 1999 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: vectorDataFactory.h,v $ $Revision: 1.9 $ $State: Exp $
*******************************************************************************/
#ifndef vectorDataFactory_H_
#define vectorDataFactory_H_

//
// \file vectorDataFactory.h
// \brief Contains the DtVectorDataFactory class declaration.
//

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

class DtTdbMetafileFactory;
class DtTerrainDatabase;
class DtVectorDataReader;


//
// Instances of this class used as factories to create the vector data metafile 
// records used when loading supported vector files through .map files.  The metafile
// records are created from entries in the .map terrain files, and are used to
// initialize the vector data importer initializers.
class DT_DLL_terrainDbFactory DtVectorDataFactory
{
public:

   typedef DtVectorDataReader* (*DtVectorDataCreator)();
   typedef std::map<DtString, DtVectorDataCreator> DtVectorDataCreatorContainer;


   // constructor
   DtVectorDataFactory(DtTdbMetafileFactory* factory);

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

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

   // Destructor: deletes factory and any entries on the factory.
   virtual ~DtVectorDataFactory();

   // registers vector data creators
   // register a creator for:
   // dfad
   // dfd
   // shape
   // vpf
   virtual void init();

   virtual void setMetafileFactory(DtTdbMetafileFactory* factory);
   virtual const DtTdbMetafileFactory* metafileFactory() const;
   virtual DtTdbMetafileFactory* metafileFactory();

   // Add a creator function to the factory.
   virtual void registerVectorDataCreator(const DtString &type, DtVectorDataCreator fcn);
                
   // creator functions callers
   virtual DtVectorDataReader* createVectorDataReader(const DtString &type);

   // loading functions
   virtual bool loadVectorData(const DtFilename& fileName,
      DtTerrainDatabase* terrain, const DtList& searchPaths);

   static DtVectorDataFactory* create();

protected:

   DtVectorDataFactory();

   virtual bool loadVectorData(const DtFilename& fileName, DtTerrainDatabase* terrain);

   DtVectorDataCreatorContainer myVectorCreators;
   DtTdbMetafileFactory* myTdbMetafileFactory;
};

#endif