IInvalHandler.h

//========================================================================================
// 
// $File$
// 
// Owner: Habib Khalfallah
// 
// $Author$
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// $DateTime$
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// $Revision$
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// 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.
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// Reviewed: 10/06/98
// 
//========================================================================================

#ifndef __IInvalHandler__
#define __IInvalHandler__

#include "IPMUnknown.h"
#include "CommandID.h"

class IInvalCookie
{
public:
 virtual ~IInvalCookie() {};

 virtual void Merge(const IInvalCookie* other) = 0;

 virtual void InvalBeforeUndo() = 0;

 virtual void InvalAfterUndo() = 0;

 virtual void InvalBeforeRedo() = 0;

 virtual void InvalAfterRedo() = 0;
};

class IInvalHandler
{
public:
 enum { kDefaultIID = IID_IINVALHANDLER };

 IInvalHandler(){}

 virtual ~IInvalHandler() {};

 virtual IInvalCookie* EndCollectingInvals () = 0;

 virtual InvalHandlerID GetID() const = 0;

 virtual void BeforeRevert_InvalAll() = 0;

 virtual void AfterRevert_InvalAll() = 0;
};

#endif // __IInvalHandler__