// Copyright (c) 2007-2009 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:

// CIMPLAINBODYTEXT.CPP

//

#include "MIUTMSG.H"

#include "MIUTCONV.H"

#include "MIUT_ERR.H"

#include "CIMPLAINBODYTEXT.H"

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS 

#include "cimmessagepart.h" 

#include "cimconvertcharconv.h"

#include "miut_errconsts.h"

#endif

#include <cmsvplainbodytext.h>

/**

NewL Factory method.

@param	aEmailMessage.   The CImEmailMessage refernce corresponding to the message whose body text is being processed.

@param	aMsvEntry.		 The CMsvEntry correspoding to the message being processed.

@param  aEntryType.		 The TImEmailEntryType for the message.

@param	aChunkLength.	 The length of the chunk that will be stored/restored in a single operation.

@param  aWriteMode.		 Indicates whether CMsvStore needs to be opened in Read/Write mode.

						 ETrue indicates Write mode.

						 EFalse indicates Read mode.

@return CImPlainBodyText.Pointer to CImPlainBodyText.

*/	

CImPlainBodyText* CImPlainBodyText::NewL(CImEmailMessage& aEmailMessage, CMsvEntry& aMsvEntry, CImEmailMessage::TImEmailEntryType aEntryType, TInt aChunkLength, TBool aWriteMode)

	{

	CImPlainBodyText* self = new (ELeave) CImPlainBodyText(aEmailMessage, aMsvEntry);

	CleanupStack::PushL(self);

	self->ConstructL(aChunkLength, aEntryType, aWriteMode);

	CleanupStack::Pop();

	return self;

	}

/**

Constructor

@param	aEmailMessage. The CImEmailMessage refernce corresponding to the message whose body text is 

@param	aMsvEntry.	   The CMsvEntry correspoding to the message being processed.

@return None.

*/

CImPlainBodyText::CImPlainBodyText(CImEmailMessage& aEmailMessage, CMsvEntry& aMsvEntry)

: CMsgActive(EPriorityNormal), iEmailMessage(aEmailMessage), iMsvEntry(aMsvEntry)

	{

	}

/**

The 2nd Phase construction.

*/	

void CImPlainBodyText::ConstructL(TInt aChunkLength, CImEmailMessage::TImEmailEntryType aEntryType, TBool aWriteMode)

	{

	iMessageId = iMsvEntry.EntryId();

	RArray<TMsvId> textIdArray;

	CleanupClosePushL (textIdArray);

	iEmailMessage.GetBodyTextEntryIdL(iMessageId, aEntryType);	

	// A message may contain more than one text part.

	TInt count = iEmailMessage.Selection().Count();

	for(TInt i=0;i<count;++i)

		{

		textIdArray.Append(iEmailMessage.Selection().At(i));

		}

	TUint charset = 0; // Will contain the charset when GetCharacterSetL returns.

	TBool override = EFalse; // Will be set to ETrue if the existing charset was overidden.

	iEmailMessage.GetCharacterSetL(iMessageId,charset,override);	

	if(aWriteMode)

		{

		RFs& fileSvrSession = iMsvEntry.Session().FileSession();

		CCnvCharacterSetConverter* characterConverter = CCnvCharacterSetConverter::NewL();

		CleanupStack::PushL(characterConverter);

		CImConvertCharconv* charConv = CImConvertCharconv::NewL(*characterConverter, fileSvrSession);

		CleanupStack::PushL(charConv);

		TUint defaultCharset = charConv->DefaultCharset();

		CleanupStack::PopAndDestroy(2,characterConverter); // charConv, characterConverter

		iMsvEntry.SetEntryL(textIdArray[0]);

		iStore = iMsvEntry.EditStoreL();

		// Body text is stored in MailStore as 16 bit so set iIs8Bit to EFalse.

		iPlainTextArray.Append(iStore->InitialisePlainBodyTextForWriteL(EFalse, charset, defaultCharset));	

		}	

	else

		{

		TInt textIdCount = textIdArray.Count();

		for(TInt i=0; i<textIdCount; ++i)

			{

			// Pointing to the text entry.

			iMsvEntry.SetEntryL(textIdArray[i]);	

			CMsvStore* store = iMsvEntry.ReadStoreL();

			CleanupStack::PushL(store);

			iPlainTextArray.Append( store->InitialisePlainBodyTextForReadL(aChunkLength));

			// if the existing charset was overidden by calling CImEmailMessage::SetCharacterSetL

			if(override)

				{

				iPlainTextArray[i]->SetCharacterSetL(charset);

				}

			CleanupStack::PopAndDestroy(store);

			store = NULL;

			}

		}

	CleanupStack::PopAndDestroy(&textIdArray);

	CActiveScheduler::Add(this);

	}

/**

Destructor

*/

EXPORT_C CImPlainBodyText::~CImPlainBodyText()

	{

	delete iStoreMessagePart;

	iPlainTextArray.ResetAndDestroy();

	iPlainTextArray.Close();	

	delete iStore;

	}

/**

Store the plain body text part in chunks.

@param aChunk. 				The 8 bit chunk that is to be stored.

@param aStatus. 			The TRequestStatus parameter for this request.

@leave KErrAccessDenied.	If CMsvStore was opened in Read mode or

							If CommitL is already called.

@leave Other 				Standard system-wide error codes.

@return void.

*/

EXPORT_C void CImPlainBodyText::StoreChunkL(const TDesC8& aChunk, TRequestStatus& aStatus)

	{

	iPlainTextArray[0]->StoreChunkL(aChunk, aStatus);

	}

/**

Store the plain body text part in chunks,synchronous version.

@param aChunk. 				The 8 bit chunk that is to be stored.

@leave KErrAccessDenied.	If CMsvStore was opened in Read mode or

							If CommitL is already called.

@leave Other 				Standard system-wide error codes.

@return void.

*/

EXPORT_C void CImPlainBodyText::StoreChunkL(const TDesC8& aChunk)

	{

	iPlainTextArray[0]->StoreChunkL(aChunk);

	}

/**

Store the body part in chunks(16 bit version).

@param aChunk 			 The 16 bit chunk that is to be stored.

@param aStatus	 		 The TRequestStatus parameter for this request.

@leave KErrNotSupported  If the 8-bit storage was enabled.

@leave KErrAccessDenied  If CMsvStore was opened in Read mode or

						 IfCommitL is already called.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::StoreChunkL(const TDesC16& aChunk, TRequestStatus& aStatus)

	{

	iPlainTextArray[0]->StoreChunkL(aChunk, aStatus);

	}

/**

Store the body part in chunks(16 bit synchronous version).

@param aChunk 			 The 16 bit chunk that is to be stored.

@leave KErrNotSupported  If the 8-bit storage was enabled.						 

@leave KErrAccessDenied  If CMsvStore was opened in Read mode or

						 If CommitL is already called.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::StoreChunkL(const TDesC16& aChunk)

	{

	iPlainTextArray[0]->StoreChunkL(aChunk);

	}

/**

Converts and stores the CRichText contents to a plain text.

@param aRichText 		 The CRichText object that will be stored as plain body text.

@leave KErrNotSupported  If the 8-bit storage was enabled.

@leave KErrAccessDenied  If CMsvStore was opened in Read mode or

						 If CommitL is already called.

@leave Other 			 Standard system-wide error codes.

@return void.

*/

EXPORT_C void CImPlainBodyText::StoreRichTextAsPlainTextL(CRichText& aRichText)

	{

	iPlainTextArray[0]->StoreRichTextAsPlainTextL(aRichText);

	}

/**

Retrieve the next chunk of the plain body text.

@param aChunk 			 The output parameter contains the requested chunk.

@param aStatus.			 The TRequestStatus for this request.

@leave KErrAccessDenied  If CMsvStore was opened in Write mode.

@leave KErrNotSupported  If 16-bit storage is enabled.

@leave KErrUnderflow 	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 				Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::NextChunkL(TDes8& aChunk, TRequestStatus& aStatus)

	{

	__ASSERT_DEBUG(iChunkRetrievalState == EIdleState, gPanic(EImcmNonIdleRetrievalState));

	iChunkRetrievalState = ENextChunk8Bit;

	iChunk8 = &aChunk;

	iChunk16 = NULL;	

	iPlainTextArray[iIndex]->NextChunkL(aChunk, iStatus);

	SetActive();

	Queue(aStatus);

	}

/**

Retrieve the next chunk of the plain body text.

@param aChunk 			 The output parameter contains the requested chunk.

@leave KErrNotSupported  If CMsvStore was opened in Write mode.

@leave KErrNotSupported  If 16-bit storage is enabled.

@leave KErrUnderflow	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::NextChunkL(TDes8& aChunk)

	{

	iPlainTextArray[iIndex]->NextChunkL(aChunk);

	// If there is more than one text part for the message move to next text part.

	if(aChunk.Length() == 0 && iIndex + 1 < iPlainTextArray.Count())

		{

		iPlainTextArray[++iIndex]->NextChunkL(aChunk);

		}

	}

/**

Restore the plain body text into chunks.

@param aChunk  			The output parameter contains the requested chunk on completion.

@param aStatus 			The TRequestStatus parameter for this request.

@leave KErrNotSupported If CMsvStore was opened in Write mode.

@leave KErrUnderflow	If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::NextChunkL(TDes16& aChunk, TRequestStatus& aStatus)

	{

	__ASSERT_DEBUG(iChunkRetrievalState == EIdleState, gPanic(EImcmNonIdleRetrievalState));

	iChunkRetrievalState = ENextChunk16Bit;

	iChunk16 = &aChunk;

	iChunk8 = NULL;

	iPlainTextArray[iIndex]->NextChunkL(aChunk, iStatus);

	SetActive();

	Queue(aStatus);

	}

/**

Restores the plain body text into chunks.

@param aChunk  			 The output parameter contains the requested chunk on completion.

@leave KErrNotSupported  If CMsvStore was opened in Write mode.

@leave KErrUnderflow	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::NextChunkL(TDes16& aChunk)

	{

	iPlainTextArray[iIndex]->NextChunkL(aChunk);

	// If there is more than one text part for the message move to next text part.

	if(aChunk.Length() == 0 && iIndex + 1 < iPlainTextArray.Count())

		{

		iPlainTextArray[++iIndex]->NextChunkL(aChunk);

		}

	}

/**

Retrieve the next chunk of the plain body text.

@param aChunk 			 The output parameter contains the requested chunk.

@leave KErrNotSupported  If CMsvStore was opened in Write mode.

@leave KErrNotSupported  If 16-bit storage is enabled.

@leave KErrUnderflow	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::PreviousChunkL(TDes8& aChunk, TRequestStatus& aStatus)

	{

	__ASSERT_DEBUG(iChunkRetrievalState == EIdleState, gPanic(EImcmNonIdleRetrievalState));

	iChunkRetrievalState = EPreviousChunk8Bit;

	iChunk8 = &aChunk;

	iChunk16 = NULL;	

	iPlainTextArray[iIndex]->PreviousChunkL(aChunk, iStatus);

	SetActive();

	Queue(aStatus);

	}

/**

Retrieve the next chunk of the plain body text.

@param aChunk 			 The output parameter contains the requested chunk.

@leave KErrNotSupported  If CMsvStore was opened in Write mode.

@leave KErrNotSupported  If 16-bit storage is enabled.

@leave KErrUnderflow	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::PreviousChunkL(TDes8& aChunk)

	{

	iPlainTextArray[iIndex]->PreviousChunkL(aChunk);

	// If message had more than one text part move to previous text part.

	if(aChunk.Length() == 0 && iIndex - 1 >= 0)

		{

		iPlainTextArray[--iIndex]->PreviousChunkL(aChunk);

		}

	}	

/**

Restore the plain body text into chunks.

@param aChunk            The output parameter contains the requested chunk on completion.

@param aStatus	         The TRequestStatus parameter for this request.

@leave KErrNotSupported  If CMsvStore was opened in Write mode.

@leave KErrUnderflow	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::PreviousChunkL(TDes16& aChunk, TRequestStatus& aStatus)

	{

	__ASSERT_DEBUG(iChunkRetrievalState == EIdleState, gPanic(EImcmNonIdleRetrievalState));

	iChunkRetrievalState = EPreviousChunk16Bit;

	iChunk16 = &aChunk;

	iChunk8 = NULL;

	iPlainTextArray[iIndex]->PreviousChunkL(aChunk, iStatus);

	SetActive();

	Queue(aStatus);

	}

/**

Restore the plain body text into chunks.

@param aChunk            The output parameter contains the requested chunk on completion.

@leave KErrNotSupported  If CMsvStore was opened in Write mode.

@leave KErrUnderflow	 If aChunk MaxLength is less than iChunkMaxLength.

@leave Other 			 Standard system-wide error codes.

@return void

*/

EXPORT_C void CImPlainBodyText::PreviousChunkL(TDes16& aChunk)

	{

	iPlainTextArray[iIndex]->PreviousChunkL(aChunk);

	// If message had more than one text part move to previous text part.

	if(aChunk.Length() == 0 && iIndex - 1 >= 0)

		{

		iPlainTextArray[--iIndex]->PreviousChunkL(aChunk);

		}

	}	

void CImPlainBodyText::DoRunL()

	{

	__ASSERT_DEBUG(iChunkRetrievalState != EIdleState, gPanic(EImcmIdleRetrievalState));

	TBool callComplete = ETrue;

	switch(iChunkRetrievalState)

		{

		// DoRunL is called as a result to a call to 8-bit asynchronous NextChunkL.

		case ENextChunk8Bit:

			{ 

			// Check if there are more than one body text part.

			if(iChunk8->Length() == 0 && iIndex + 1 < iPlainTextArray.Count())

				{

				iPlainTextArray[++iIndex]->NextChunkL(*iChunk8, iStatus);

				SetActive();

				callComplete = EFalse;

				}

			break;

			}

		case ENextChunk16Bit:

			{

			// Check if there are more than one body text part

			if(iChunk16->Length() == 0 && iIndex + 1 < iPlainTextArray.Count())

				{

				iPlainTextArray[iIndex]->NextChunkL(*iChunk16, iStatus);

				SetActive();

				callComplete = EFalse;

				}

			break;	

			}

		case EPreviousChunk8Bit:

			{

			// DoRunL is called as a result to a call to 8-bit asynchronous PreviousChunkL.

			if(iChunk8->Length() == 0 && iIndex - 1 >= 0)

				{

				iPlainTextArray[--iIndex]->NextChunkL(*iChunk8, iStatus);

				SetActive();

				callComplete = EFalse;

				}

			break;	

			}

		case EPreviousChunk16Bit:

			{

			if(iChunk16->Length() == 0 && iIndex - 1 >= 0)

				{

				iPlainTextArray[--iIndex]->PreviousChunkL(*iChunk16, iStatus);

				SetActive();

				callComplete = EFalse;

				}

			break;	

			}

		default:

			{

			__ASSERT_DEBUG(iChunkRetrievalState != EIdleState, gPanic(EImcmIdleRetrievalState));

			break;

			}

		}

	if(callComplete)	

		{

		Complete(iStatus.Int());

		iChunkRetrievalState = EIdleState;

		}

	}

/**

Commits the email message after it has been completed.

@param aStatus      The  TRequestStatus parameter for this request.

@return void

*/

EXPORT_C void CImPlainBodyText::CommitL(TRequestStatus& aStatus)

	{

	iPlainTextArray[0]->CommitL();

	delete iStore;

	iStore = NULL;

	iStoreMessagePart = CImStoreMessagePart::StorePlainBodyTextL(aStatus, iMsvEntry, iMessageId);

	}

/**

Commits the email message after it has been completed along with mime header for this message.

@param aStatus      The TRequestStatus parameter for this request.

@param aMimeHeader  The CMimeHeader for this message.

@return void

*/

EXPORT_C void CImPlainBodyText::CommitL(TRequestStatus& aStatus, CImMimeHeader& aMimeHeader)

	{

	// Commit the file.This will close the plainbody text file.

	iPlainTextArray[0]->CommitL();

	delete iStore;

	iStore = NULL;

	iStoreMessagePart = CImStoreMessagePart::StorePlainBodyTextL(aStatus, iMsvEntry, iMessageId, aMimeHeader);

	}

/**

Cancels the relavent CMsvPlainBodyText object

*/	

void CImPlainBodyText::DoCancel()

	{

	iPlainTextArray[iIndex]->Cancel();

	}