// CMSVPLAINBODYTEXT.H+
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+
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// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).+
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// All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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//+
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// Initial Contributors:+
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// Nokia Corporation - initial contribution.+
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//+
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// Contributors:+
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//+
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// Description:+
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//+
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+
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#ifndef __CMSVPLAINBODYTEXT_H__+
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#define __CMSVPLAINBODYTEXT_H__+
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+
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+
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#include <msvstore.h>+
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#include <mentact.h>+
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#include <charconv.h>+
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+
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class CMsvStore;+
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class CRichText;+
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class CParaFormatLayer;+
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class CCharFormatLayer;+
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class CCnvCharacterSetConverter;+
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+
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/**+
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This class encapsulates plainbody text information for storage within the+
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Message Store.It also populates a CRichText object with the 8 bit data+
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decoded to the specified character set.If a character set is not specified,+
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then the default character set is used.+
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+
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@publishedAll+
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@released+
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*/+
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class CMsvPlainBodyText : public CMsgActive+
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	{+
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public:+
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	static CMsvPlainBodyText* NewL(MMsvStoreManager& aMsvStoreManager, CMsvStore& aStore, TBool aIs8Bit, TUint aCharsetId, TUint aDefaultCharsetId, TMsvId aMessageId, RFs& aFs);+
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	static CMsvPlainBodyText* NewL(MMsvStoreManager& aMsvStoreManager, CMsvStore& aStore, TMsvId aMessageId, RFs& aFs, TInt aChunkLength);+
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+
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	IMPORT_C ~CMsvPlainBodyText();+
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+
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	IMPORT_C void StoreChunkL(const TDesC8& aChunk, TRequestStatus& aStatus);+
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	IMPORT_C void StoreChunkL(const TDesC8& aChunk);+
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+
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	IMPORT_C void StoreChunkL(const TDesC16& aChunk, TRequestStatus& aStatus);+
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	IMPORT_C void StoreChunkL(const TDesC16& aChunk);+
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+
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	IMPORT_C void StoreRichTextAsPlainTextL(CRichText& aRichText);+
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+
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	IMPORT_C void CommitL();+
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+
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	IMPORT_C void NextChunkL(TDes8& aChunk, TRequestStatus& aStatus);+
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	IMPORT_C void NextChunkL(TDes8& aChunk);+
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+
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	IMPORT_C void NextChunkL(TDes16& aChunk, TRequestStatus& aStatus);+
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	IMPORT_C void NextChunkL(TDes16& aChunk);+
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+
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	IMPORT_C void PreviousChunkL(TDes8& aChunk, TRequestStatus& aStatus);+
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	IMPORT_C void PreviousChunkL(TDes8& aChunk);+
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+
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	IMPORT_C void PreviousChunkL(TDes16& aChunk, TRequestStatus& aStatus);+
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	IMPORT_C void PreviousChunkL(TDes16& aChunk);+
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+
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+
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	IMPORT_C void SetCharacterSetL(const TUint aCharset);+
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	IMPORT_C TUint CharacterSet();+
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	IMPORT_C TUint DefaultCharacterSet();+
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+
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 	IMPORT_C TInt Size();+
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+
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private:+
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	CMsvPlainBodyText(MMsvStoreManager& aMsvStoreManager, CMsvStore& aStore, TBool aIs8Bit, TUint aCharsetId, TUint aDefaultCharsetId, TMsvId aMessageId, RFs& aFs);+
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	void ConstructWriteL();+
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+
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	CMsvPlainBodyText(MMsvStoreManager& aMsvStoreManager, CMsvStore& aStore,TMsvId aMessageId, RFs& aFs,TInt aChunkLength);+
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	void ConstructReadL();+
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+
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	void PrepareToConvertL();+
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	void ConvertChunkToUnicodeForStoreL(const TDesC8& aChunk);+
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	TInt ConvertChunkToUnicodeForRestoreL();+
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	void ExtractNextChunkFromRichText(TDes16& aChunk);+
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	void ExtractPreviousChunkFromRichText(TDes16& aChunk);+
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	void RevertL();+
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	void DoRunL();+
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	void DoComplete();+
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	void DoCancel();+
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+
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private:+
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	/** To access APIs related to RFile operations.*/+
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	MMsvStoreManager& 			  iMsvStoreManager;+
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	CMsvStore& 					  iStore;+
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	/** Indicates whether to store text as 8 bit or 16 bit.*/+
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	TBool 						  iIs8Bit;+
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	/** The charset of the body text*/+
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	TUint 						  iCharsetId;+
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 	TUint 					 	  iDefaultCharsetId;+
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+
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 	/** The RFile Path.*/+
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	HBufC*	 					  iFilePath;+
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  	TMsvId 						  iMessageId;+
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	RFs& 						  iFSession;+
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+
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	/** The RFile to which body text is written.*/+
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	RFile 						  iFile;+
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	/** Character converter for 8 to 16 bit conversion.*/+
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	CCnvCharacterSetConverter* 	  iConverter;+
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	CRichText* 					  iRichText;+
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	CParaFormatLayer* 			  iParaLayer;+
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	CCharFormatLayer* 			  iCharLayer;+
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	TInt 						  iReadChunkLength;+
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	/** Temporary buffer created to Store chunk while it is being written aynchronously.*/+
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	RBuf16	 					  iTempChunk16;+
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	/** Buffer used to read data from RFile.*/+
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	RBuf8 						  iRfileReadBuf8;+
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	/** Pointer to 8-bit buffer that needs to be written to RFile.*/+
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	TPtrC8 						  iRfileWritePtr8;+
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	/** The position from where to extract data in CRichText*/+
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	TInt 						  iPos;+
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	/** Contains the size of the chunk that will be read or write in the RFile*/+
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	TInt 					 	  iChunkMaxLength;+
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	/** Contains the remaining unconverted Unicode Data*/+
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	HBufC8* 					  iRemainingUnConvertedData;+
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	/** Array that stores the start positions of each chunk,in Rfile*/+
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	RArray<TInt> 			 	  iStartPosOfEachChunkInFile;+
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	/** Contains the start position of the next chunk*/+
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	TInt 						  iStartPosOfNextChunk;+
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	/** Contains the remaining converted Unicode Data*/+
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	RBuf16						  iRemainingConvertedData;+
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	/** Pointer to a 16 bit chunk that is being read from the store.*/+
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	TDes16*	 					  iChunk16;+
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	/** Pointer to a 8 bit chunk that is being read from the store.*/+
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	TDes8* 						  iChunk8;+
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	/** Indicates whether the Rfile is commited or not.*/+
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	TBool 						  iIsCommitted;+
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+
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	/** Indicates whether the chunk being read is last.*/+
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	TBool 						  iIsLastChunk;+
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	/** Indicates whether call to DoRunl was initiated by PreviousChunkL method.*/+
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	TBool 						  iPrevChunk;+
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	/** Indicates whether call to DoRunl was initiated by 8 bit PreviousChunkL and NextChunkL methods.*/+
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	TBool 						  iRetrieving8bit;+
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	/** Enum indicating if RFile is being written or read */+
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	enum {EMsvFileReading, EMsvFileWriting} iMsvFileStatus;+
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	CCnvCharacterSetConverter::TAvailability iAvailable;+
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	//Containes current position of the Rfile+
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	TInt 						 iCurrentFilePos;+
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	};+
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+
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#endif//__CMSVPLAINBODYTEXT_H__+
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