ClassFactory.h

//========================================================================================
// 
// $File$
// 
// Owner: Robin_Briggs
// 
// $Author$
// 
// $DateTime$
// 
// $Revision$
// 
// $Change$
// 
// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
// 
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance 
// with the terms of the Adobe license agreement accompanying it. If you have received
// this file from a source other than Adobe, then your use, modification, or 
// distribution of it requires the prior written permission of Adobe.
// 
// 
// Virtual constructors."
// 
// Allows you to register a constructor function, keyed by class ID.
// Which in turns allows you to create a new object given a class ID.
// 
//========================================================================================

#ifndef __CLASSFACTORY__
#define __CLASSFACTORY__

#ifndef __ODFRC__
#include "OMFactoryCtor.h"

class IDataBase;

class ClassFactory {
public:
 ClassFactory(ClassID id, BossConstructor classFact = nil);
 
 static void InstallClasses(PluginID ownerComponent);
 
 ClassID GetClassID() { return fID; }
 BossConstructor GetFactory() { return fFactory; }
 
private:
 ClassID fID;
 BossConstructor fFactory;
 ClassFactory *fNext;
 static ClassFactory *gFirstClass;
};


#define CREATE_CLASSFACTORY(className, clsID) \
 ClassFactory g##className##Factory(clsID, Create##className); \
 ClassFactory *Get##className##Factory(); \
 ClassFactory *Get##className##Factory() { return &g##className##Factory; }


#define REGISTER_CLASSFACTORY(className, clsID) \
 ClassFactory *Get##className##Factory(); \
 Get##className##Factory();

#else // is ODFRC
#define REGISTER_CLASSFACTORY(ClassName, clsID) \
 clsID
#endif

#endif // __CLASSFACTORY__