// 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 // which accompanies this distribution, and is available

 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 #ifndef STREAMELEMENT_H

 #define STREAMELEMENT_H

 #include <e32base.h>

 #include <s32mem.h>

 #include <rm_debug_api.h>

 #include <debuglogging.h>

 /**

 @internalTechnology 

 @released

 Pure virtual base class for streamable classes. 

 Used when a class must be passed accross a client server interface

 */

 class CStreamElementBase : public CBase

 {

 public:

 	virtual ~CStreamElementBase()

 		{

 		}

 	/** 

 	Creates HBufC8 with a representation of ’this’ object

 	*/

 	IMPORT_C  HBufC8* MarshalDataL();

 	TInt static MaxSize()

 		{

 		return 0;

 		}

 	virtual TInt Size() const = 0;

 	// Initializes ’this’ from stream

 	virtual void InternalizeL( RReadStream & aStream ) = 0;

 	// Writes ’this’ to the stream

 	virtual void ExternalizeL( RWriteStream & aStream, CBufFlat* buf ) = 0;

 	TUint32 iSpare1;

 	TUint32 iSpare2;

 };

 #endif // STREAMELEMENT_H