path: root/sc/inc/chgtrack.hxx

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#ifndef SC_CHGTRACK_HXX
#define SC_CHGTRACK_HXX


#include <tools/string.hxx>
#include <tools/datetime.hxx>
#include <tools/table.hxx>
#include <tools/stack.hxx>
#include <tools/queue.hxx>
#include <tools/mempool.hxx>
#include <tools/link.hxx>
#include <unotools/options.hxx>
#include "global.hxx"
#include "bigrange.hxx"
#include "collect.hxx"
#include "scdllapi.h"

#ifdef SC_CHGTRACK_CXX
// core/inc
#include "refupdat.hxx"
#endif

#define DEBUG_CHANGETRACK 0


class ScBaseCell;
class ScDocument;


enum ScChangeActionType
{
    SC_CAT_NONE,
    SC_CAT_INSERT_COLS,
    SC_CAT_INSERT_ROWS,
    SC_CAT_INSERT_TABS,
    SC_CAT_DELETE_COLS,
    SC_CAT_DELETE_ROWS,
    SC_CAT_DELETE_TABS,
    SC_CAT_MOVE,
    SC_CAT_CONTENT,
    SC_CAT_REJECT
};


enum ScChangeActionState
{
    SC_CAS_VIRGIN,
    SC_CAS_ACCEPTED,
    SC_CAS_REJECTED
};


enum ScChangeActionClipMode
{
    SC_CACM_NONE,
    SC_CACM_CUT,
    SC_CACM_COPY,
    SC_CACM_PASTE
};

class SvStream;

// --- ScChangeActionLinkEntry ---------------------------------------------

// Inserts itself as the head of a chain (better: linked list?), or before a LinkEntry
// on delete: automatically remove of what is linked (German original was strange...)
// ppPrev == &previous->pNext oder address of pointer to head of linked list,
// *ppPrev == this

class ScChangeAction;

class ScChangeActionLinkEntry
{
                                // not implemented, prevent usage
                                ScChangeActionLinkEntry(
                                    const ScChangeActionLinkEntry& );
    ScChangeActionLinkEntry&	operator=( const ScChangeActionLinkEntry& );

protected:

    ScChangeActionLinkEntry*	pNext;
    ScChangeActionLinkEntry**	ppPrev;
    ScChangeAction*				pAction;
    ScChangeActionLinkEntry*	pLink;

public:

    DECL_FIXEDMEMPOOL_NEWDEL( ScChangeActionLinkEntry )

                                ScChangeActionLinkEntry(
                                        ScChangeActionLinkEntry** ppPrevP,
                                        ScChangeAction* pActionP )
                                    :	pNext( *ppPrevP ),
                                        ppPrev( ppPrevP ),
                                        pAction( pActionP ),
                                        pLink( NULL )
                                    {
                                        if ( pNext )
                                            pNext->ppPrev = &pNext;
                                        *ppPrevP = this;
                                    }

    virtual						~ScChangeActionLinkEntry()
                                    {
                                        ScChangeActionLinkEntry* p = pLink;
                                        UnLink();
                                        Remove();
                                        if ( p )
                                            delete p;
                                    }

            void				SetLink( ScChangeActionLinkEntry* pLinkP )
                                    {
                                        UnLink();
                                        if ( pLinkP )
                                        {
                                            pLink = pLinkP;
                                            pLinkP->pLink = this;
                                        }
                                    }

            void				UnLink()
                                    {
                                        if ( pLink )
                                        {
                                            pLink->pLink = NULL;
                                            pLink = NULL;
                                        }
                                    }

            void				Remove()
                                    {
                                        if ( ppPrev )
                                        {
                                            if ( ( *ppPrev = pNext ) != NULL )
                                                pNext->ppPrev = ppPrev;
                                            ppPrev = NULL;	// not inserted
                                        }
                                    }

            void				Insert( ScChangeActionLinkEntry** ppPrevP )
                                    {
                                        if ( !ppPrev )
                                        {
                                            ppPrev = ppPrevP;
                                            if ( (pNext = *ppPrevP) )
                                                pNext->ppPrev = &pNext;
                                            *ppPrevP = this;
                                        }
                                    }

    const ScChangeActionLinkEntry*	GetLink() const		{ return pLink; }
    ScChangeActionLinkEntry*		GetLink()			{ return pLink; }
    const ScChangeActionLinkEntry*	GetNext() const		{ return pNext; }
    ScChangeActionLinkEntry*		GetNext()			{ return pNext; }
    const ScChangeAction*			GetAction() const	{ return pAction; }
    ScChangeAction*					GetAction()			{ return pAction; }
#if DEBUG_CHANGETRACK
    String                          ToString() const;
#endif // DEBUG_CHANGETRACK
};

// --- ScChangeActionCellListEntry -----------------------------------------
// this is only for the XML Export in the hxx
class ScChangeActionContent;

class ScChangeActionCellListEntry
{
    friend class ScChangeAction;
    friend class ScChangeActionDel;
    friend class ScChangeActionMove;
    friend class ScChangeTrack;

            ScChangeActionCellListEntry*	pNext;
            ScChangeActionContent*			pContent;

                                ScChangeActionCellListEntry(
                                    ScChangeActionContent* pContentP,
                                    ScChangeActionCellListEntry* pNextP )
                                    :	pNext( pNextP ),
                                        pContent( pContentP )
                                    {}

public:
    const ScChangeActionCellListEntry* GetNext() const { return pNext; } // this is only for the XML Export public
    const ScChangeActionContent* GetContent() const { return pContent; } // this is only for the XML Export public

    DECL_FIXEDMEMPOOL_NEWDEL( ScChangeActionCellListEntry )
};

// --- ScChangeAction -------------------------------------------------------

class ScChangeTrack;
class ScChangeActionIns;
class ScChangeActionDel;
class ScChangeActionContent;

class ScChangeAction
{
    friend class ScChangeTrack;
    friend class ScChangeActionIns;
    friend class ScChangeActionDel;
    friend class ScChangeActionMove;
    friend class ScChangeActionContent;

                                // not implemented, prevent usage
                                ScChangeAction( const ScChangeAction& );
            ScChangeAction&		operator=( const ScChangeAction& );

protected:

            ScBigRange	  		aBigRange;		 	// Ins/Del/MoveTo/ContentPos
            DateTime			aDateTime;			//! UTC
            String				aUser;				// who?
            String				aComment;			// user comment
            ScChangeAction*		pNext;				// next in linked list
            ScChangeAction*		pPrev;				// previous in linked list
            ScChangeActionLinkEntry*	pLinkAny;	// arbitrary links
            ScChangeActionLinkEntry*	pLinkDeletedIn;	// access to insert areas which were
                                                    // deleted or moved or rejected
            ScChangeActionLinkEntry*	pLinkDeleted;	// links to deleted
            ScChangeActionLinkEntry*	pLinkDependent;	// links to dependent
            ULONG				nAction;
            ULONG				nRejectAction;
            ScChangeActionType	eType;
            ScChangeActionState	eState;


                                ScChangeAction( ScChangeActionType,
                                                const ScRange& );

                                // only to be used in the XML import
                                ScChangeAction( ScChangeActionType,
                                                const ScBigRange&,
                                                const ULONG nAction,
                                                const ULONG nRejectAction,
                                                const ScChangeActionState eState,
                                                const DateTime& aDateTime,
                                                const String& aUser,
                                                const String& aComment );
                                // only to be used in the XML import
                                ScChangeAction( ScChangeActionType,
                                                const ScBigRange&,
                                                const ULONG nAction);

    virtual						~ScChangeAction();

            String				GetRefString( const ScBigRange&,
                                    ScDocument*, BOOL bFlag3D = FALSE ) const;

            void				SetActionNumber( ULONG n ) { nAction = n; }
            void				SetRejectAction( ULONG n ) { nRejectAction = n; }
            void				SetUser( const String& r ) { aUser = r; }
            void				SetType( ScChangeActionType e ) { eType = e; }
            void				SetState( ScChangeActionState e ) { eState = e; }
            void				SetRejected();

            ScBigRange& 		GetBigRange() { return aBigRange; }

            ScChangeActionLinkEntry*	AddLink( ScChangeAction* p,
                                            ScChangeActionLinkEntry* pL )
                                    {
                                        ScChangeActionLinkEntry* pLnk =
                                            new ScChangeActionLinkEntry(
                                            &pLinkAny, p );
                                        pLnk->SetLink( pL );
                                        return pLnk;
                                    }
            void				RemoveAllAnyLinks();

    virtual	ScChangeActionLinkEntry*	GetDeletedIn() const
                                            { return pLinkDeletedIn; }
    virtual	ScChangeActionLinkEntry**	GetDeletedInAddress()
                                            { return &pLinkDeletedIn; }
            ScChangeActionLinkEntry*	AddDeletedIn( ScChangeAction* p )
                                    {
                                        return new ScChangeActionLinkEntry(
                                            GetDeletedInAddress(), p );
                                    }
            BOOL				RemoveDeletedIn( const ScChangeAction* );
            void				SetDeletedIn( ScChangeAction* );

            ScChangeActionLinkEntry*	AddDeleted( ScChangeAction* p )
                                    {
                                        return new ScChangeActionLinkEntry(
                                            &pLinkDeleted, p );
                                    }
            void				RemoveAllDeleted();

            ScChangeActionLinkEntry*	AddDependent( ScChangeAction* p )
                                    {
                                        return new ScChangeActionLinkEntry(
                                            &pLinkDependent, p );
                                    }
            void				RemoveAllDependent();

            void				RemoveAllLinks();

    virtual	void				AddContent( ScChangeActionContent* ) = 0;
    virtual	void				DeleteCellEntries() = 0;

    virtual	void 				UpdateReference( const ScChangeTrack*,
                                    UpdateRefMode, const ScBigRange&,
                                    INT32 nDx, INT32 nDy, INT32 nDz );

            void				Accept();
    virtual	BOOL				Reject( ScDocument* ) = 0;
            void				RejectRestoreContents( ScChangeTrack*,
                                    SCsCOL nDx, SCsROW nDy );

                                // used in Reject() instead of IsRejectable()
            BOOL				IsInternalRejectable() const;

                                // Derived classes that hold a pointer to the
                                // ChangeTrack must return that. Otherwise NULL.
    virtual const ScChangeTrack*    GetChangeTrack() const = 0;

public:

            BOOL				IsInsertType() const
                                    {
                                        return eType == SC_CAT_INSERT_COLS ||
                                            eType == SC_CAT_INSERT_ROWS ||
                                            eType == SC_CAT_INSERT_TABS;
                                    }
            BOOL				IsDeleteType() const
                                    {
                                        return eType == SC_CAT_DELETE_COLS ||
                                            eType == SC_CAT_DELETE_ROWS ||
                                            eType == SC_CAT_DELETE_TABS;
                                    }
            BOOL				IsVirgin() const
                                    { return eState == SC_CAS_VIRGIN; }
            BOOL				IsAccepted() const
                                    { return eState == SC_CAS_ACCEPTED; }
            BOOL				IsRejected() const
                                    { return eState == SC_CAS_REJECTED; }

                                // Action rejects another Action
            BOOL				IsRejecting() const
                                    { return nRejectAction != 0; }

                                // if action is visible in the document
            BOOL				IsVisible() const;

                                // if action if touchable 
            BOOL				IsTouchable() const;

                                // if action is an entry in dialog root
            BOOL				IsDialogRoot() const;

                                // if an entry in a dialog shall be a drop down entry
            BOOL				IsDialogParent() const;

                                // if action is a delete with subdeletes (aufgeklappt = open ?) 
            BOOL				IsMasterDelete() const;

                                // if action is acceptable/selectable/rejectable
            BOOL				IsClickable() const;

                                // if action is rejectable
            BOOL				IsRejectable() const;

            const ScBigRange& 	GetBigRange() const { return aBigRange; }
            SC_DLLPUBLIC DateTime			GetDateTime() const;		// local time
            const DateTime&		GetDateTimeUTC() const		// UTC time
                                    { return aDateTime; }
            const String&		GetUser() const { return aUser; }
            const String&		GetComment() const { return aComment; }
            ScChangeActionType	GetType() const { return eType; }
            ScChangeActionState	GetState() const { return eState; }
            ULONG				GetActionNumber() const { return nAction; }
            ULONG				GetRejectAction() const { return nRejectAction; }

            ScChangeAction*		GetNext() const { return pNext; }
            ScChangeAction*		GetPrev() const { return pPrev; }

            BOOL				IsDeletedIn() const
                                    { return GetDeletedIn() != NULL; }
            BOOL				IsDeleted() const
                                    { return IsDeleteType() || IsDeletedIn(); }
            BOOL				IsDeletedIn( const ScChangeAction* ) const;
            BOOL				IsDeletedInDelType( ScChangeActionType ) const;
            void                RemoveAllDeletedIn();

            const ScChangeActionLinkEntry* GetFirstDeletedEntry() const
                                    { return pLinkDeleted; }
            const ScChangeActionLinkEntry* GetFirstDependentEntry() const
                                    { return pLinkDependent; }
            BOOL				HasDependent() const
                                    { return pLinkDependent != NULL; }
            BOOL				HasDeleted() const
                                    { return pLinkDeleted != NULL; }

                                // description will be appended to string 
                                // with bSplitRange only one column/row will be considered for delete 
                                // (for a listing of entries)
    virtual	void				GetDescription( String&, ScDocument*,
                                    BOOL bSplitRange = FALSE, bool bWarning = true ) const;

    virtual void				GetRefString( String&, ScDocument*,
                                    BOOL bFlag3D = FALSE ) const;

                                // for DocumentMerge set old date of the other
                                // action, fetched by GetDateTimeUTC
            void				SetDateTimeUTC( const DateTime& rDT )
                                    { aDateTime = rDT; }

                                // set user comment
            void				SetComment( const String& rStr )
                                    { aComment = rStr; }

                                // only to be used in the XML import
            void				SetDeletedInThis( ULONG nActionNumber,
                                        const ScChangeTrack* pTrack );
                                // only to be used in the XML import
            void				AddDependent( ULONG nActionNumber,
                                        const ScChangeTrack* pTrack );
#if DEBUG_CHANGETRACK
            String              ToString( ScDocument* pDoc ) const;
#endif // DEBUG_CHANGETRACK
};


// --- ScChangeActionIns ----------------------------------------------------

class ScChangeActionIns : public ScChangeAction
{
    friend class ScChangeTrack;

                                ScChangeActionIns( const ScRange& rRange );
    virtual						~ScChangeActionIns();

    virtual	void				AddContent( ScChangeActionContent* ) {}
    virtual	void				DeleteCellEntries() {}

    virtual	BOOL				Reject( ScDocument* );

    virtual const ScChangeTrack*    GetChangeTrack() const { return 0; }

public:
                                ScChangeActionIns(const ULONG nActionNumber,
                                        const ScChangeActionState eState,
                                        const ULONG nRejectingNumber,
                                        const ScBigRange& aBigRange,
                                        const String& aUser,
                                        const DateTime& aDateTime,
                                        const String &sComment,
                                        const ScChangeActionType eType); // only to use in the XML import

    virtual	void				GetDescription( String&, ScDocument*,
                                    BOOL bSplitRange = FALSE, bool bWarning = true ) const;
};


// --- ScChangeActionDel ----------------------------------------------------

class ScChangeActionMove;

class ScChangeActionDelMoveEntry : public ScChangeActionLinkEntry
{
    friend class ScChangeActionDel;
    friend class ScChangeTrack;

            short		   		nCutOffFrom;
            short		   		nCutOffTo;


                                ScChangeActionDelMoveEntry(
                                    ScChangeActionDelMoveEntry** ppPrevP,
                                    ScChangeActionMove* pMove,
                                    short nFrom, short nTo )
                                    :	ScChangeActionLinkEntry(
                                            (ScChangeActionLinkEntry**)
                                                ppPrevP,
                                            (ScChangeAction*) pMove ),
                                        nCutOffFrom( nFrom ),
                                        nCutOffTo( nTo )
                                    {}

            ScChangeActionDelMoveEntry*	GetNext()
                                    {
                                        return (ScChangeActionDelMoveEntry*)
                                        ScChangeActionLinkEntry::GetNext();
                                    }
            ScChangeActionMove*	GetMove()
                                    {
                                        return (ScChangeActionMove*)
                                        ScChangeActionLinkEntry::GetAction();
                                    }

public:
            const ScChangeActionDelMoveEntry*	GetNext() const
                                    {
                                        return (const ScChangeActionDelMoveEntry*)
                                        ScChangeActionLinkEntry::GetNext();
                                    }
            const ScChangeActionMove*	GetMove() const
                                    {
                                        return (const ScChangeActionMove*)
                                        ScChangeActionLinkEntry::GetAction();
                                    }
            short				GetCutOffFrom() const { return nCutOffFrom; }
            short				GetCutOffTo() const { return nCutOffTo; }
};


class ScChangeActionDel : public ScChangeAction
{
    friend class ScChangeTrack;
    friend void ScChangeAction::Accept();

            ScChangeTrack*		pTrack;
            ScChangeActionCellListEntry* pFirstCell;
            ScChangeActionIns*	pCutOff;		// cut insert
            short				nCutOff;		// +: start  -: end
            ScChangeActionDelMoveEntry* pLinkMove;
            SCsCOL				nDx;
            SCsROW				nDy;

                                ScChangeActionDel( const ScRange& rRange,
                                    SCsCOL nDx, SCsROW nDy, ScChangeTrack* );
    virtual						~ScChangeActionDel();

            ScChangeActionIns*	GetCutOffInsert() { return pCutOff; }

    virtual	void				AddContent( ScChangeActionContent* );
    virtual	void				DeleteCellEntries();

            void				UndoCutOffMoves();
            void				UndoCutOffInsert();

    virtual	void 				UpdateReference( const ScChangeTrack*,
                                    UpdateRefMode, const ScBigRange&,
                                    INT32 nDx, INT32 nDy, INT32 nDz );

    virtual	BOOL				Reject( ScDocument* );

    virtual const ScChangeTrack*    GetChangeTrack() const { return pTrack; }

public:
                                ScChangeActionDel(const ULONG nActionNumber,
                                                const ScChangeActionState eState,
                                                const ULONG nRejectingNumber,
                                                const ScBigRange& aBigRange,
                                                const String& aUser,
                                                const DateTime& aDateTime,
                                                const String &sComment,
                                                const ScChangeActionType eType,
                                                const SCsCOLROW nD,
                                                ScChangeTrack* pTrack); // only to use in the XML import
                                                                        // which of nDx and nDy is set is dependend on the type

                                // is the last in a row (or single)
            BOOL				IsBaseDelete() const;

                                // is the first in a row (or single)
            BOOL				IsTopDelete() const;

                                // is part of a row 
            BOOL				IsMultiDelete() const;

                                // is col, belonging to a TabDelete
            BOOL				IsTabDeleteCol() const;

            SCsCOL				GetDx() const { return nDx; }
            SCsROW				GetDy() const { return nDy; }
            ScBigRange			GetOverAllRange() const;	// BigRange + (nDx, nDy)

            const ScChangeActionCellListEntry* GetFirstCellEntry() const
                                    { return pFirstCell; }
            const ScChangeActionDelMoveEntry* GetFirstMoveEntry() const
                                    { return pLinkMove; }
            const ScChangeActionIns*	GetCutOffInsert() const { return pCutOff; }
            short				GetCutOffCount() const { return nCutOff; }

    virtual	void				GetDescription( String&, ScDocument*,
                                    BOOL bSplitRange = FALSE, bool bWarning = true ) const;
            void				SetCutOffInsert( ScChangeActionIns* p, short n )
                                    { pCutOff = p; nCutOff = n; }	// only to use in the XML import
                                                                    // this should be protected, but for the XML import it is public
            // only to use in the XML import
            // this should be protected, but for the XML import it is public
            ScChangeActionDelMoveEntry*	AddCutOffMove( ScChangeActionMove* pMove,
                                        short nFrom, short nTo )
                                    {
                                        return new ScChangeActionDelMoveEntry(
                                        &pLinkMove, pMove, nFrom, nTo );
                                    }
};


// --- ScChangeActionMove ---------------------------------------------------

class ScChangeActionMove : public ScChangeAction
{
    friend class ScChangeTrack;
    friend class ScChangeActionDel;

            ScBigRange			aFromRange;
            ScChangeTrack*		pTrack;
            ScChangeActionCellListEntry* pFirstCell;
            ULONG				nStartLastCut;	// fuer PasteCut Undo
            ULONG				nEndLastCut;

                                ScChangeActionMove( const ScRange& rFromRange,
                                    const ScRange& rToRange,
                                    ScChangeTrack* pTrackP )
                                    : ScChangeAction( SC_CAT_MOVE, rToRange ),
                                        aFromRange( rFromRange ),
                                        pTrack( pTrackP ),
                                        pFirstCell( NULL ),
                                        nStartLastCut(0),
                                        nEndLastCut(0)
                                    {}
    virtual						~ScChangeActionMove();

    virtual	void				AddContent( ScChangeActionContent* );
    virtual	void				DeleteCellEntries();

            ScBigRange&			GetFromRange() { return aFromRange; }

            void				SetStartLastCut( ULONG nVal ) { nStartLastCut = nVal; }
            ULONG				GetStartLastCut() const { return nStartLastCut; }
            void				SetEndLastCut( ULONG nVal )	{ nEndLastCut = nVal; }
            ULONG				GetEndLastCut() const { return nEndLastCut; }

    virtual	void 				UpdateReference( const ScChangeTrack*,
                                    UpdateRefMode, const ScBigRange&,
                                    INT32 nDx, INT32 nDy, INT32 nDz );

    virtual	BOOL				Reject( ScDocument* );

    virtual const ScChangeTrack*    GetChangeTrack() const { return pTrack; }

protected:
    using ScChangeAction::GetRefString;

public:
                                ScChangeActionMove(const ULONG nActionNumber,
                                                const ScChangeActionState eState,
                                                const ULONG nRejectingNumber,
                                                const ScBigRange& aToBigRange,
                                                const String& aUser,
                                                const DateTime& aDateTime,
                                                const String &sComment,
                                                const ScBigRange& aFromBigRange,
                                                ScChangeTrack* pTrack); // only to use in the XML import
            const ScChangeActionCellListEntry* GetFirstCellEntry() const
                                    { return pFirstCell; } // only to use in the XML export

            const ScBigRange&	GetFromRange() const { return aFromRange; }
    SC_DLLPUBLIC		void				GetDelta( INT32& nDx, INT32& nDy, INT32& nDz ) const;

    virtual	void				GetDescription( String&, ScDocument*,
                                    BOOL bSplitRange = FALSE, bool bWarning = true ) const;

    virtual void				GetRefString( String&, ScDocument*,
                                    BOOL bFlag3D = FALSE ) const;
};


// --- ScChangeActionContent ------------------------------------------------

enum ScChangeActionContentCellType
{
    SC_CACCT_NONE = 0,
    SC_CACCT_NORMAL,
    SC_CACCT_MATORG,
    SC_CACCT_MATREF
};

class Stack;

class ScChangeActionContent : public ScChangeAction
{
    friend class ScChangeTrack;

            String				aOldValue;
            String				aNewValue;
            ScBaseCell*			pOldCell;
            ScBaseCell*			pNewCell;
        ScChangeActionContent*	pNextContent;	// at the same position
        ScChangeActionContent*	pPrevContent;
        ScChangeActionContent*	pNextInSlot;	// in the same slot
        ScChangeActionContent**	ppPrevInSlot;

            void				InsertInSlot( ScChangeActionContent** pp )
                                    {
                                        if ( !ppPrevInSlot )
                                        {
                                            ppPrevInSlot = pp;
                                            if ( ( pNextInSlot = *pp ) != NULL )
                                                pNextInSlot->ppPrevInSlot = &pNextInSlot;
                                            *pp = this;
                                        }
                                    }
            void				RemoveFromSlot()
                                    {
                                        if ( ppPrevInSlot )
                                        {
                                            if ( ( *ppPrevInSlot = pNextInSlot ) != NULL )
                                                pNextInSlot->ppPrevInSlot = ppPrevInSlot;
                                            ppPrevInSlot = NULL;	// not inserted
                                        }
                                    }
        ScChangeActionContent*	GetNextInSlot() { return pNextInSlot; }

            void				ClearTrack();

    static	void				GetStringOfCell( String& rStr,
                                    const ScBaseCell* pCell,
                                    const ScDocument* pDoc,
                                    const ScAddress& rPos );

    static	void				GetStringOfCell( String& rStr,
                                    const ScBaseCell* pCell,
                                    const ScDocument* pDoc,
                                    ULONG nFormat );

    static	void				SetValue( String& rStr, ScBaseCell*& pCell,
                                    const ScAddress& rPos,
                                    const ScBaseCell* pOrgCell,
                                    const ScDocument* pFromDoc,
                                    ScDocument* pToDoc );

    static	void				SetValue( String& rStr, ScBaseCell*& pCell,
                                    ULONG nFormat,
                                    const ScBaseCell* pOrgCell,
                                    const ScDocument* pFromDoc,
                                    ScDocument* pToDoc );

    static	void				SetCell( String& rStr, ScBaseCell* pCell,
                                    ULONG nFormat, const ScDocument* pDoc );

    static	BOOL				NeedsNumberFormat( const ScBaseCell* );

            void				SetValueString( String& rValue,
                                    ScBaseCell*& pCell,	const String& rStr,
                                    ScDocument* pDoc );

            void				GetValueString( String& rStr,
                                    const String& rValue,
                                    const ScBaseCell* pCell ) const;

            void				GetFormulaString( String& rStr,
                                    const ScFormulaCell* pCell ) const;

    virtual	void				AddContent( ScChangeActionContent* ) {}
    virtual	void				DeleteCellEntries() {}

    virtual	void 				UpdateReference( const ScChangeTrack*,
                                    UpdateRefMode, const ScBigRange&,
                                    INT32 nDx, INT32 nDy, INT32 nDz );

    virtual	BOOL				Reject( ScDocument* );

    virtual const ScChangeTrack*    GetChangeTrack() const { return 0; }

                                // pRejectActions!=NULL: reject actions get
                                // stacked, no SetNewValue, no Append
            BOOL				Select( ScDocument*, ScChangeTrack*,
                                    BOOL bOldest, Stack* pRejectActions );

            void				PutValueToDoc( ScBaseCell*, const String&,
                                    ScDocument*, SCsCOL nDx, SCsROW nDy ) const;

protected:
    using ScChangeAction::GetRefString;

public:

    DECL_FIXEDMEMPOOL_NEWDEL( ScChangeActionContent )

                                ScChangeActionContent( const ScRange& rRange )
                                    : ScChangeAction( SC_CAT_CONTENT, rRange ),
                                        pOldCell( NULL ),
                                        pNewCell( NULL ),
                                        pNextContent( NULL ),
                                        pPrevContent( NULL ),
                                        pNextInSlot( NULL ),
                                        ppPrevInSlot( NULL )
                                    {}
                                ScChangeActionContent(const ULONG nActionNumber,
                                                const ScChangeActionState eState,
                                                const ULONG nRejectingNumber,
                                                const ScBigRange& aBigRange,
                                                const String& aUser,
                                                const DateTime& aDateTime,
                                                const String &sComment,
                                                ScBaseCell* pOldCell,
                                                ScDocument* pDoc,
                                                const String& sOldValue); // to use for XML Import
                                ScChangeActionContent(const ULONG nActionNumber,
                                                ScBaseCell* pNewCell,
                                                const ScBigRange& aBigRange,
                                                ScDocument* pDoc,
                                                const String& sNewValue); // to use for XML Import of Generated Actions
    virtual						~ScChangeActionContent();

        ScChangeActionContent*	GetNextContent() const { return pNextContent; }
        ScChangeActionContent*	GetPrevContent() const { return pPrevContent; }
        ScChangeActionContent*	GetTopContent() const;
            BOOL				IsTopContent() const
                                    { return pNextContent == NULL; }

    virtual	ScChangeActionLinkEntry*  	GetDeletedIn() const;
    virtual	ScChangeActionLinkEntry**	GetDeletedInAddress();

            void				PutOldValueToDoc( ScDocument*,
                                    SCsCOL nDx, SCsROW nDy ) const;
            void				PutNewValueToDoc( ScDocument*,
                                    SCsCOL nDx, SCsROW nDy ) const;

            void				SetOldValue( const ScBaseCell*,
                                    const ScDocument* pFromDoc,
                                    ScDocument* pToDoc,
                                    ULONG nFormat );
            void				SetOldValue( const ScBaseCell*,
                                    const ScDocument* pFromDoc,
                                    ScDocument* pToDoc );
            void				SetNewValue( const ScBaseCell*,	ScDocument* );

                                // Used in import filter AppendContentOnTheFly,
                                // takes ownership of cells.
            void				SetOldNewCells( ScBaseCell* pOldCell,
                                    ULONG nOldFormat, ScBaseCell* pNewCell,
                                    ULONG nNewFormat, ScDocument* pDoc );

                                // Use this only in the XML import,
                                // takes ownership of cell.
            void				SetNewCell( ScBaseCell* pCell, ScDocument* pDoc, const String& rFormatted );

                                // These functions should be protected but for
                                // the XML import they are public.
            void				SetNextContent( ScChangeActionContent* p )
                                    { pNextContent = p; }
            void				SetPrevContent( ScChangeActionContent* p )
                                    { pPrevContent = p; }

                                // don't use:
                                // assigns String / creates forumula cell 
            void				SetOldValue( const String& rOld, ScDocument* );
            void				SetNewValue( const String& rNew, ScDocument* );

            void				GetOldString( String& ) const;
            void				GetNewString( String& ) const;
            const ScBaseCell*	GetOldCell() const { return pOldCell; }
            const ScBaseCell*	GetNewCell() const { return pNewCell; }
    virtual	void				GetDescription( String&, ScDocument*,
                                    BOOL bSplitRange = FALSE, bool bWarning = true ) const;
    virtual void				GetRefString( String&, ScDocument*,
                                    BOOL bFlag3D = FALSE ) const;

    static	ScChangeActionContentCellType	GetContentCellType( const ScBaseCell* );

                                // NewCell
            BOOL				IsMatrixOrigin() const
                                    {
                                        return GetContentCellType( GetNewCell() )
                                            == SC_CACCT_MATORG;
                                    }
            BOOL				IsMatrixReference() const
                                    {
                                        return GetContentCellType( GetNewCell() )
                                            == SC_CACCT_MATREF;
                                    }
                                // OldCell
            BOOL				IsOldMatrixOrigin() const
                                    {
                                        return GetContentCellType( GetOldCell() )
                                            == SC_CACCT_MATORG;
                                    }
            BOOL				IsOldMatrixReference() const
                                    {
                                        return GetContentCellType( GetOldCell() )
                                            == SC_CACCT_MATREF;
                                    }

};


// --- ScChangeActionReject -------------------------------------------------

class Stack;

class ScChangeActionReject : public ScChangeAction
{
    friend class ScChangeTrack;
    friend class ScChangeActionContent;

                                ScChangeActionReject( ULONG nReject )
                                    : ScChangeAction( SC_CAT_REJECT, ScRange() )
                                    {
                                        SetRejectAction( nReject );
                                        SetState( SC_CAS_ACCEPTED );
                                    }

    virtual	void				AddContent( ScChangeActionContent* ) {}
    virtual	void				DeleteCellEntries() {}

    virtual	BOOL				Reject( ScDocument* ) { return FALSE; }

    virtual const ScChangeTrack*    GetChangeTrack() const { return 0; }

public:
                                ScChangeActionReject(const ULONG nActionNumber,
                                                const ScChangeActionState eState,
                                                const ULONG nRejectingNumber,
                                                const ScBigRange& aBigRange,
                                                const String& aUser,
                                                const DateTime& aDateTime,
                                                const String &sComment); // only to use in the XML import
};


// --- ScChangeTrack --------------------------------------------------------

enum ScChangeTrackMsgType
{
    SC_CTM_NONE,
    SC_CTM_APPEND,		// Actions appended
    SC_CTM_REMOVE,		// Actions removed
    SC_CTM_CHANGE,		// Actions changed
    SC_CTM_PARENT		// became a parent (and wasn't before)
};

struct ScChangeTrackMsgInfo
{
    DECL_FIXEDMEMPOOL_NEWDEL( ScChangeTrackMsgInfo )

    ScChangeTrackMsgType	eMsgType;
    ULONG					nStartAction;
    ULONG					nEndAction;
};

// MsgQueue for notification via ModifiedLink
DECLARE_QUEUE( ScChangeTrackMsgQueue, ScChangeTrackMsgInfo* )
DECLARE_STACK( ScChangeTrackMsgStack, ScChangeTrackMsgInfo* )

enum ScChangeTrackMergeState
{
    SC_CTMS_NONE,
    SC_CTMS_PREPARE,
    SC_CTMS_OWN,
    SC_CTMS_UNDO,
    SC_CTMS_OTHER
};

// Table, additionally to pFirst/pNext/pLast/pPrev, to enable fast access by ActionNumber and by list
DECLARE_TABLE( ScChangeActionTable, ScChangeAction* )

// Internally generated actions start at this value (nearly all bits set)
// and are decremented, to keep values in a table seperated from "normal" actions.
#define SC_CHGTRACK_GENERATED_START	((UINT32) 0xfffffff0)

class ScChangeTrack : public utl::ConfigurationListener
{
    friend void ScChangeAction::RejectRestoreContents( ScChangeTrack*, SCsCOL, SCsROW );
    friend BOOL ScChangeActionDel::Reject( ScDocument* pDoc );
    friend void ScChangeActionDel::DeleteCellEntries();
    friend void ScChangeActionMove::DeleteCellEntries();
    friend BOOL ScChangeActionMove::Reject( ScDocument* pDoc );

    static	const SCROW         nContentRowsPerSlot;
    static	const SCSIZE        nContentSlots;

    com::sun::star::uno::Sequence< sal_Int8 >	aProtectPass;
            ScChangeActionTable	aTable;
            ScChangeActionTable	aGeneratedTable;
            ScChangeActionTable	aPasteCutTable;
        ScChangeTrackMsgQueue	aMsgQueue;
        ScChangeTrackMsgStack	aMsgStackTmp;
        ScChangeTrackMsgStack	aMsgStackFinal;
            ScStrCollection		aUserCollection;
            String				aUser;
            Link				aModifiedLink;
            ScRange				aInDeleteRange;
            DateTime			aFixDateTime;
            ScChangeAction*		pFirst;
            ScChangeAction*		pLast;
        ScChangeActionContent*	pFirstGeneratedDelContent;
        ScChangeActionContent**	ppContentSlots;
        ScChangeActionMove*		pLastCutMove;
    ScChangeActionLinkEntry*	pLinkInsertCol;
    ScChangeActionLinkEntry*	pLinkInsertRow;
    ScChangeActionLinkEntry*	pLinkInsertTab;
    ScChangeActionLinkEntry*	pLinkMove;
        ScChangeTrackMsgInfo*	pBlockModifyMsg;
            ScDocument*			pDoc;
            ULONG				nActionMax;
            ULONG				nGeneratedMin;
            ULONG				nMarkLastSaved;
            ULONG				nStartLastCut;
            ULONG				nEndLastCut;
            ULONG				nLastMerge;
        ScChangeTrackMergeState	eMergeState;
            USHORT				nLoadedFileFormatVersion;
            BOOL				bLoadSave;
            BOOL				bInDelete;
            BOOL				bInDeleteUndo;
            BOOL				bInDeleteTop;
            BOOL				bInPasteCut;
            BOOL				bUseFixDateTime;
            BOOL                bTime100thSeconds;

                                // not implemented, prevent usage
                                ScChangeTrack( const ScChangeTrack& );
            ScChangeTrack&		operator=( const ScChangeTrack& );

#ifdef SC_CHGTRACK_CXX
    static	SCROW				InitContentRowsPerSlot();

                                // TRUE if one is MM_FORMULA and the other is
                                // not, or if both are and range differs
    static	BOOL				IsMatrixFormulaRangeDifferent(
                                    const ScBaseCell* pOldCell,
                                    const ScBaseCell* pNewCell );

            void				Init();
            void				DtorClear();
            void				SetLoadSave( BOOL bVal ) { bLoadSave = bVal; }
            void				SetInDeleteRange( const ScRange& rRange )
                                    { aInDeleteRange = rRange; }
            void				SetInDelete( BOOL bVal )
                                    { bInDelete = bVal; }
            void				SetInDeleteTop( BOOL bVal )
                                    { bInDeleteTop = bVal; }
            void				SetInDeleteUndo( BOOL bVal )
                                    { bInDeleteUndo = bVal; }
            void				SetInPasteCut( BOOL bVal )
                                    { bInPasteCut = bVal; }
            void				SetMergeState( ScChangeTrackMergeState eState )
                                    { eMergeState = eState; }
        ScChangeTrackMergeState	GetMergeState() const { return eMergeState; }
            void				SetLastMerge( ULONG nVal ) { nLastMerge = nVal; }
            ULONG				GetLastMerge() const { return nLastMerge; }

            void				SetLastCutMoveRange( const ScRange&, ScDocument* );

                                // create block of ModifyMsg
            void				StartBlockModify( ScChangeTrackMsgType,
                                    ULONG nStartAction );
            void				EndBlockModify( ULONG nEndAction );

            void				AddDependentWithNotify( ScChangeAction* pParent,
                                    ScChangeAction* pDependent );

            void				Dependencies( ScChangeAction* );
            void				UpdateReference( ScChangeAction*, BOOL bUndo );
            void				UpdateReference( ScChangeAction** ppFirstAction,
                                    ScChangeAction* pAct, BOOL bUndo );
            void				Append( ScChangeAction* pAppend, ULONG nAction );
    SC_DLLPUBLIC		void				AppendDeleteRange( const ScRange&,
                                    ScDocument* pRefDoc, SCsTAB nDz,
                                    ULONG nRejectingInsert );
            void				AppendOneDeleteRange( const ScRange& rOrgRange,
                                    ScDocument* pRefDoc,
                                    SCsCOL nDx, SCsROW nDy, SCsTAB nDz,
                                    ULONG nRejectingInsert );
            void				LookUpContents( const ScRange& rOrgRange,
                                    ScDocument* pRefDoc,
                                    SCsCOL nDx, SCsROW nDy, SCsTAB nDz );
            void				Remove( ScChangeAction* );
            void				MasterLinks( ScChangeAction* );

                                // Content on top an Position
        ScChangeActionContent*	SearchContentAt( const ScBigAddress&,
                                    ScChangeAction* pButNotThis ) const;
            void				DeleteGeneratedDelContent(
                                    ScChangeActionContent* );
        ScChangeActionContent*	GenerateDelContent( const ScAddress&,
                                    const ScBaseCell*,
                                    const ScDocument* pFromDoc );
            void				DeleteCellEntries(
                                    ScChangeActionCellListEntry*&,
                                    ScChangeAction* pDeletor );

                                // Reject action and all dependent actions,
                                // Table stems from previous GetDependents,
                                // only needed for Insert and Move (MasterType),
                                // is NULL otherwise.
                                // bRecursion == called from reject with table
            BOOL				Reject( ScChangeAction*,
                                    ScChangeActionTable*, BOOL bRecursion );

#endif	// SC_CHGTRACK_CXX

            void				ClearMsgQueue();
    virtual void                ConfigurationChanged( utl::ConfigurationBroadcaster*, sal_uInt32 );

public:

    static	SCSIZE				ComputeContentSlot( INT32 nRow )
                                    {
                                        if ( nRow < 0 || nRow > MAXROW )
                                            return nContentSlots - 1;
                                        return static_cast< SCSIZE >( nRow / nContentRowsPerSlot );
                                    }

            SC_DLLPUBLIC        ScChangeTrack( ScDocument* );
                                ScChangeTrack( ScDocument*,
                                            const ScStrCollection& ); // only to use in the XML import
            SC_DLLPUBLIC virtual ~ScChangeTrack();
            void				Clear();

            ScChangeActionContent*	GetFirstGenerated() const { return pFirstGeneratedDelContent; }
            ScChangeAction*		GetFirst() const { return pFirst; }
            ScChangeAction*		GetLast() const	{ return pLast; }
            ULONG				GetActionMax() const { return nActionMax; }
            BOOL				IsGenerated( ULONG nAction ) const
                                    { return nAction >= nGeneratedMin; }
            ScChangeAction*		GetAction( ULONG nAction ) const
                                    { return aTable.Get( nAction ); }
            ScChangeAction*		GetGenerated( ULONG nGenerated ) const
                                    { return aGeneratedTable.Get( nGenerated ); }
            ScChangeAction*		GetActionOrGenerated( ULONG nAction ) const
                                    {
                                        return IsGenerated( nAction ) ?
                                            GetGenerated( nAction ) :
                                            GetAction( nAction );
                                    }
            ULONG				GetLastSavedActionNumber() const
                                    { return nMarkLastSaved; }
            void                SetLastSavedActionNumber(ULONG nNew)
                                    { nMarkLastSaved = nNew; }
            ScChangeAction*		GetLastSaved() const
                                    { return aTable.Get( nMarkLastSaved ); }
        ScChangeActionContent**	GetContentSlots() const { return ppContentSlots; }

            BOOL				IsLoadSave() const { return bLoadSave; }
            const ScRange&		GetInDeleteRange() const
                                    { return aInDeleteRange; }
            BOOL				IsInDelete() const { return bInDelete; }
            BOOL				IsInDeleteTop() const { return bInDeleteTop; }
            BOOL				IsInDeleteUndo() const { return bInDeleteUndo; }
            BOOL				IsInPasteCut() const { return bInPasteCut; }
    SC_DLLPUBLIC		void				SetUser( const String& );
            const String&		GetUser() const { return aUser; }
            const ScStrCollection&	GetUserCollection() const
                                    { return aUserCollection; }
            ScDocument*			GetDocument() const { return pDoc; }
                                // for import filter
            const DateTime&		GetFixDateTime() const { return aFixDateTime; }

                                // set this if the date/time set with
                                // SetFixDateTime...() shall be applied to
                                // appended actions
            void				SetUseFixDateTime( BOOL bVal )
                                    { bUseFixDateTime = bVal; }
                                // for MergeDocument, apply original date/time as UTC
            void				SetFixDateTimeUTC( const DateTime& rDT )
                                    { aFixDateTime = rDT; }
                                // for import filter, apply original date/time as local time
            void				SetFixDateTimeLocal( const DateTime& rDT )
                                    { aFixDateTime = rDT; aFixDateTime.ConvertToUTC(); }

            void				Append( ScChangeAction* );

                                // pRefDoc may be NULL => no lookup of contents
                                // => no generation of deleted contents
    SC_DLLPUBLIC		void				AppendDeleteRange( const ScRange&,
                                    ScDocument* pRefDoc,
                                    ULONG& nStartAction, ULONG& nEndAction,
                                    SCsTAB nDz = 0 );
                                    // nDz: multi TabDel, LookUpContent must be searched 
                                    // with an offset of -nDz 

                                // after new value was set in the document,
                                // old value from RefDoc/UndoDoc
            void				AppendContent( const ScAddress& rPos,
                                    ScDocument* pRefDoc );
                                // after new values were set in the document,
                                // old values from RefDoc/UndoDoc
            void				AppendContentRange( const ScRange& rRange,
                                    ScDocument* pRefDoc,
                                    ULONG& nStartAction, ULONG& nEndAction,
                                    ScChangeActionClipMode eMode = SC_CACM_NONE );
                                // after new value was set in the document,
                                // old value from pOldCell, nOldFormat,
                                // RefDoc==NULL => Doc
            void				AppendContent( const ScAddress& rPos,
                                    const ScBaseCell* pOldCell,
                                    ULONG nOldFormat, ScDocument* pRefDoc = NULL );
                                // after new value was set in the document,
                                // old value from pOldCell, format from Doc
            void				AppendContent( const ScAddress& rPos,
                                    const ScBaseCell* pOldCell );
                                // after new values were set in the document,
                                // old values from RefDoc/UndoDoc.
                                // All contents with a cell in RefDoc 
            void				AppendContentsIfInRefDoc( ScDocument* pRefDoc,
                                    ULONG& nStartAction, ULONG& nEndAction );

                                // Meant for import filter, creates and inserts
                                // an unconditional content action of the two
                                // cells without querying the document, not
                                // even for number formats (though the number
                                // formatter of the document may be used).
                                // The action is returned and may be used to
                                // set user name, description, date/time et al.
                                // Takes ownership of the cells!
    SC_DLLPUBLIC	ScChangeActionContent*	AppendContentOnTheFly( const ScAddress& rPos,
                                    ScBaseCell* pOldCell,
                                    ScBaseCell* pNewCell,
                                    ULONG nOldFormat = 0,
                                    ULONG nNewFormat = 0 );

                                // Only use the following two if there is no different solution!
                                // (Assign String for NewValue or creation of a formula respectively)

    SC_DLLPUBLIC		void				AppendInsert( const ScRange& );

                                // pRefDoc may be NULL => no lookup of contents
                                // => no generation of deleted contents
    SC_DLLPUBLIC		void				AppendMove( const ScRange& rFromRange,
                                    const ScRange& rToRange,
                                    ScDocument* pRefDoc );

                                // Cut to Clipboard
            void				ResetLastCut()
                                    {
                                        nStartLastCut = nEndLastCut = 0;
                                        if ( pLastCutMove )
                                        {
                                            delete pLastCutMove;
                                            pLastCutMove = NULL;
                                        }
                                    }
            BOOL				HasLastCut() const
                                    {
                                        return nEndLastCut > 0 &&
                                            nStartLastCut <= nEndLastCut &&
                                            pLastCutMove;
                                    }

    SC_DLLPUBLIC		void				Undo( ULONG nStartAction, ULONG nEndAction, bool bMerge = false );

                                // for MergeDocument, adjust references,
                                //! may only be used in a temporary opened document
                                //! der Track ist danach verhunzt
            void				MergePrepare( ScChangeAction* pFirstMerge, bool bShared = false );
            void				MergeOwn( ScChangeAction* pAct, ULONG nFirstMerge, bool bShared = false );
    static	BOOL				MergeIgnore( const ScChangeAction&, ULONG nFirstMerge );

                                // Insert dependents into table.
                                // Bei Insert sind es echte Abhaengige,
                                // bei Move abhaengige Contents im FromRange
                                // und geloeschte im ToRange bzw. Inserts in
                                // FromRange oder ToRange,
                                // bei Delete eine Liste der geloeschten,
                                // bei Content andere Contents an gleicher
                                // Position oder MatrixReferences zu MatrixOrigin.
                                // Mit bListMasterDelete werden unter einem
                                // MasterDelete alle zu diesem Delete gehoerenden
                                // Deletes einer Reihe gelistet.
                                // Mit bAllFlat werden auch alle Abhaengigen
                                // der Abhaengigen flach eingefuegt.
    SC_DLLPUBLIC		void				GetDependents( ScChangeAction*,
                                    ScChangeActionTable&,
                                    BOOL bListMasterDelete = FALSE,
                                    BOOL bAllFlat = FALSE ) const;

                                // Reject visible Action (und abhaengige)
            BOOL                Reject( ScChangeAction*, bool bShared = false );

                                // Accept visible Action (und abhaengige)
    SC_DLLPUBLIC		BOOL				Accept( ScChangeAction* );

            void				AcceptAll();	// alle Virgins
            BOOL				RejectAll();	// alle Virgins

                                // Selektiert einen Content von mehreren an
                                // gleicher Position und akzeptiert diesen und
                                // die aelteren, rejected die neueren.
                                // Mit bOldest==TRUE wird der erste OldValue
                                // einer Virgin-Content-Kette restauriert.
            BOOL				SelectContent( ScChangeAction*,
                                    BOOL bOldest = FALSE );

                                // wenn ModifiedLink gesetzt, landen
                                // Aenderungen in ScChangeTrackMsgQueue
            void				SetModifiedLink( const Link& r )
                                    { aModifiedLink = r; ClearMsgQueue(); }
            const Link&			GetModifiedLink() const { return aModifiedLink; }
            ScChangeTrackMsgQueue& GetMsgQueue() { return aMsgQueue; }

            void				NotifyModified( ScChangeTrackMsgType eMsgType,
                                    ULONG nStartAction, ULONG nEndAction );

            USHORT				GetLoadedFileFormatVersion() const
                                    { return nLoadedFileFormatVersion; }

            ULONG				AddLoadedGenerated(ScBaseCell* pOldCell,
                                                const ScBigRange& aBigRange, const String& sNewValue ); // only to use in the XML import
            void				AppendLoaded( ScChangeAction* pAppend ); // this is only for the XML import public, it should be protected
            void				SetActionMax(ULONG nTempActionMax)
                                    { nActionMax = nTempActionMax; } // only to use in the XML import

            void                SetProtection( const com::sun::star::uno::Sequence< sal_Int8 >& rPass )
                                    { aProtectPass = rPass; }
    com::sun::star::uno::Sequence< sal_Int8 >   GetProtection() const
                                    { return aProtectPass; }
            BOOL                IsProtected() const
                                    { return aProtectPass.getLength() != 0; }

                                // If time stamps of actions of this
                                // ChangeTrack and a second one are to be
                                // compared including 100th seconds.
            void                SetTime100thSeconds( BOOL bVal )
                                    { bTime100thSeconds = bVal; }
            BOOL                IsTime100thSeconds() const
                                    { return bTime100thSeconds; }

            void                AppendCloned( ScChangeAction* pAppend );
    SC_DLLPUBLIC ScChangeTrack* Clone( ScDocument* pDocument ) const;
            void                MergeActionState( ScChangeAction* pAct, const ScChangeAction* pOtherAct );
#if DEBUG_CHANGETRACK
            String              ToString() const;
#endif // DEBUG_CHANGETRACK
};


#endif


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