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UndoC.h

//-------------------------------------------------------------------------
//
// File:        UndoC.h
// Desc:        Undo object class.
// Author:      memon <memon@inside.org>
//
//-------------------------------------------------------------------------
//  Copyright (c) 2000-2002 Moppi Productions. All Rights Reserved.
//  This file is part of Moppi Demopaja SDK. For conditions of 
//  distribution and use, see the accompanying license.txt file.
//  http://moppi.inside.org/demopaja/
//-------------------------------------------------------------------------

#ifndef __DEMOPAJA_UNDOC_H__
#define __DEMOPAJA_UNDOC_H__

// Forward declaration.
namespace Edit {
    class UndoC;
};

#include "DataBlockI.h"
#include "PajaTypes.h"
#include <vector>
#include <string>
#include "EditableI.h"

namespace Edit {

    enum DiscardableTypeE {
        DATA_REMOVED = 1,   
        DATA_CREATED = 2,   
    };


    class UndoC
    {
    public:


        UndoC( const char* szName );

        virtual ~UndoC();

        virtual void            undo();

        virtual void            redo();


        virtual void            add_restore_data( EditableI* pBlock );


        virtual void            add_discardable_data( DataBlockI* pBlock, PajaTypes::uint32 ui32Flags );

        virtual const char*     get_name();
        
        virtual bool            can_redo();

    private:

        struct DiscardableS {
            DataBlockI* m_pData;
            bool        m_bDiscard;
        };

        std::vector<EditableI*>     m_rUndoBlocks;
        std::vector<EditableI*>     m_rRedoBlocks;
        std::vector<DiscardableS>   m_rDiscardable;
        std::string                 m_sName;
        bool                        m_bUndoDone;
    };


};  // namespace Edit



#endif  //__DEMOPAJA_UNDOC_H__

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