// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

// Written by DanH, Sept 1995

#if !defined(__BACELL_H__)

#define __BACELL_H__

#if !defined(__E32DEF_H_)

#include <e32def.h>

#endif

#if !defined(__S32STRM_H__)

#include <s32strm.h>

#endif

//class RReadStream;

//class RWriteStream;

class TCellRef

/** 

Identifies a cell by row and column number. 

@publishedAll

@released

*/

	{

public:

	inline TCellRef();

	inline TCellRef(TInt aRow,TInt aCol);

	inline TBool operator==(const TCellRef& aCell) const;

	inline TBool operator!=(const TCellRef& aCell) const;

	inline TCellRef& operator+=(const TCellRef& aCell);

	inline TCellRef& operator-=(const TCellRef& aCell);

	IMPORT_C void Offset(TInt aRowOffset,TInt aColOffset);

//

	IMPORT_C void InternalizeL(RReadStream& aStream);

	inline void ExternalizeL(RWriteStream& aStream) const;

public:

	/** The row number. */

	TInt iRow;

	/** The column number. */

	TInt iCol;

	};

/** 

@publishedAll

@released

*/

IMPORT_C TCellRef operator+(const TCellRef& aLeft,const TCellRef& aRight);

IMPORT_C TCellRef operator-(const TCellRef& aLeft,const TCellRef& aRight);

inline TCellRef::TCellRef()

	/** Default constructor.

	The object's row and column number are undefined. */

	{}

inline TCellRef::TCellRef(TInt aRow,TInt aCol)

    : iRow(aRow),iCol(aCol)

	/** Constructor taking a row and column number.

	@param aRow The row number.

	@param aCol The column number. */

	{}

inline TBool TCellRef::operator==(const TCellRef& aCell) const

	/** Compares this cell with the specified cell for equality.

	@param aCell The cell to be compared.

	@return ETrue, if the row numbers are the same and column numbers are 

	the same. */

	{return aCell.iRow==iRow && aCell.iCol==iCol;}

inline TBool TCellRef::operator!=(const TCellRef& aCell) const

	/** Compares this cell with the specified cell for inequality.

	@param aCell The cell to be compared.

	@return ETrue, if the row numbers are different or the column numbers are 

	different. */

	{return aCell.iRow!=iRow || aCell.iCol!=iCol;}

inline TCellRef& TCellRef::operator+=(const TCellRef& aCell)

	/** Adds the specified cell to this cell.

	Addition is the process of adding the specified cell's row and column 

	numbers to this cell's row and column numbers respectively.

	@param aCell The cell to be added.

	@return A reference to this cell object. */

	{Offset(aCell.iRow,aCell.iCol);return *this;}

inline TCellRef& TCellRef::operator-=(const TCellRef& aCell)

	/** Subtracts the specified cell from this cell.

	Subtraction is the process of subtracting the specified cell's row and 

	column numbers from this cell's row and column numbers respectively.

	@param aCell The cell to be subtracted.

	@return A reference to this cell object. */

	{Offset(-aCell.iRow,-aCell.iCol);return *this;}

inline void TCellRef::ExternalizeL(RWriteStream& aStream) const

	/** Externalises an object of this class to a write stream.

	The presence of this function means that the standard templated operator<<() 

	can be used to externalise objects of this class. 

	@param aStream Stream to which the object should be externalised. */

	{aStream.WriteInt32L(iRow);aStream.WriteInt32L(iCol);}

class TRangeRef

/** 

Identifies a range of cells by start and end cell references.

The range is inclusive of both the start and end cells.

@see TCellRef

@publishedAll

@released

*/

	{

public:

	inline TRangeRef();

	inline TRangeRef(const TCellRef& aFrom,const TCellRef& aTo);

	inline TRangeRef(TInt aFromRow,TInt aFromCol,TInt aToRow,TInt aToCol);

	IMPORT_C TBool operator==(const TRangeRef& aRange) const;

	inline TBool operator!=(const TRangeRef& aRange) const;

	inline void SetRange(const TCellRef& aFrom,const TCellRef& aTo);

	inline void SetRange(TInt aFromRow,TInt aFromCol,TInt aToRow,TInt aToCol);

	inline TInt NoRows() const;

	inline TInt NoCols() const;

	IMPORT_C TInt NoCells() const;

	IMPORT_C TBool Contains(const TCellRef& aCell) const;

	IMPORT_C void InternalizeL(RReadStream& aStream);

	IMPORT_C void ExternalizeL(RWriteStream& aStream) const;

public:

	/** The start cell. */

	TCellRef	iFrom;

	/** The end cell. */

	TCellRef	iTo;

public:

	class TIter;	// defined outside TRangeRef class as contains TRangeRef

	};

class TRangeRef::TIter

/**

@publishedAll

@released

*/

	{

public:

	IMPORT_C TIter(const TRangeRef& aRangeRef);

	IMPORT_C TBool operator++();

	inline TBool InRange() const;

public:

	TCellRef	iCurrent;

private:

	TRangeRef	iRange;

	};

inline TRangeRef::TRangeRef()

	/** Default constructor.

	The object's start cell and end cell are undefined. */

	{}

inline TRangeRef::TRangeRef(const TCellRef& aFrom,const TCellRef& aTo)

	: iFrom(aFrom),iTo(aTo)

	/** Constructor taking a start and end cell.

	@param aFrom The start cell.

	@param aTo The end cell. */

	{}

inline TRangeRef::TRangeRef(TInt aFromRow,TInt aFromCol,TInt aToRow,TInt aToCol)

	: iFrom(aFromRow,aFromCol),iTo(aToRow,aToCol)

	/** Constructor taking a start row and start column number, and an end row and 

	end column number.

	@param aFromRow The start row number.

	@param aFromCol The start column number.

	@param aToRow The end row number.

	@param aToCol The end column number. */

	{}

inline void TRangeRef::SetRange(const TCellRef& aFrom,const TCellRef& aTo)

	/** Sets the cell range to the specified cells.

	@param aFrom The start cell for the range.

	@param aTo The end cell for the range. */

	{iFrom=aFrom;iTo=aTo;}

inline void TRangeRef::SetRange(TInt aFromRow,TInt aFromCol,TInt aToRow,TInt aToCol)

	/** Sets the cell range to the specified start row and column, and end row 

	and column.

	@param aFromRow The start row number.

	@param aFromCol The start column number.

	@param aToRow The end row number.

	@param aToCol The end column number. */

	{iFrom.iRow=aFromRow;iFrom.iCol=aFromCol;iTo.iRow=aToRow;iTo.iCol=aToCol;}

inline TBool TRangeRef::operator!=(const TRangeRef& aRange) const

	/** Compares this cell range with the specified cell range for inequality.

	@param aRange The cell to be compared.

	@return ETrue, if the start cells are different or the end cells are 

	different. */

	{return !operator==(aRange);}

inline TInt TRangeRef::NoRows() const

	/** Gets the number of rows represented by the range.

	@return The number of rows. */

	{return iTo.iRow - iFrom.iRow + 1;}

inline TInt TRangeRef::NoCols() const

	/** Gets the number of columns represented by the range.

	@return The number of columns. */

	{return iTo.iCol - iFrom.iCol + 1;}

inline TBool TRangeRef::TIter::InRange() const

	{return iRange.Contains(iCurrent);}

#endif