/*

* 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: 

*

*/

#include "FLDBASE.H"

#include "FLDSTD.H"

///////////////////////////////////////

// CTextField

///////////////////////////////////////

EXPORT_C TStreamId CTextField::StoreL(CStreamStore& aStore) const

// Assumes everything goes into the head stream.

// (Must be replaced by concrete pictures that have components)

/** Stores the field data to a stream store. Concrete field types with no persistent 

data should override this function to return KNullStreamId.

@param aStore Stream store to which the field data is written. 

@return The ID of the stream store. */

	{

	RStoreWriteStream stream;

	TStreamId id=stream.CreateLC(aStore);

    stream<< *this;  // provided by the concrete field

    stream.CommitL();

	CleanupStack::PopAndDestroy();

	return id;

	}

EXPORT_C void CTextField::RestoreL(const CStreamStore& aStore,TStreamId aStreamId)

// Creates a read-stream over aStore, and opens it over the specified stream ID.

//

	/** Restores the field data from a stream store. Concrete field types with no persistent 

	data should override this function to do nothing.

	@param aStore Stream store containing the field data to restore. 

	@param aId The ID of the stream store in which the field data was previously 

	stored. */

	{

	RStoreReadStream stream;

	stream.OpenLC(aStore,aStreamId);

	stream>> *this;

	CleanupStack::PopAndDestroy();

	}

EXPORT_C void CTextField::ExternalizeL(RWriteStream& /*aStream*/)const

//

	/** Externalises the field data. Called by StoreL().

	Calling this default implementation raises a panic. Concrete field classes 

	with persistent data must provide their own implementation of this function. 

	Concrete field classes with no persistent data must provide a StoreL() implementation 

	that just returns KNullStreamId.

	@param aStream Not used. */

	{Panic(EDefaultFieldExternalizeCalled);}