williamr@4: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@4: // All rights reserved.
williamr@4: // This component and the accompanying materials are made available
williamr@4: // 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
williamr@4: // which accompanies this distribution, and is available
williamr@4: // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
williamr@4: //
williamr@4: // Initial Contributors:
williamr@4: // Nokia Corporation - initial contribution.
williamr@4: //
williamr@4: // Contributors:
williamr@4: //
williamr@4: // Description:
williamr@4: //
williamr@4: 
williamr@4: 
williamr@4: #ifndef STREAMELEMENT_H
williamr@4: #define STREAMELEMENT_H
williamr@4: 
williamr@4: #include <e32base.h>
williamr@4: #include <s32mem.h>
williamr@4: 
williamr@4: #include <rm_debug_api.h>
williamr@4: #include <debuglogging.h>
williamr@4: 
williamr@4: /**
williamr@4: @internalTechnology 
williamr@4: @released
williamr@4: 
williamr@4: Pure virtual base class for streamable classes. 
williamr@4: Used when a class must be passed accross a client server interface
williamr@4: */
williamr@4: class CStreamElementBase : public CBase
williamr@4: {
williamr@4: 
williamr@4: public:
williamr@4: 	
williamr@4: 	virtual ~CStreamElementBase()
williamr@4: 		{
williamr@4: 		}
williamr@4: 
williamr@4: 	/** 
williamr@4: 	Creates HBufC8 with a representation of ’this’ object
williamr@4: 	*/
williamr@4: 	IMPORT_C  HBufC8* MarshalDataL();
williamr@4: 
williamr@4: 
williamr@4: 	TInt static MaxSize()
williamr@4: 		{
williamr@4: 		return 0;
williamr@4: 		}
williamr@4: 
williamr@4: 	virtual TInt Size() const = 0;
williamr@4: 
williamr@4: 	// Initializes ’this’ from stream
williamr@4: 	virtual void InternalizeL( RReadStream & aStream ) = 0;
williamr@4: 
williamr@4: 	// Writes ’this’ to the stream
williamr@4: 	virtual void ExternalizeL( RWriteStream & aStream, CBufFlat* buf ) = 0;
williamr@4: 
williamr@4: 	TUint32 iSpare1;
williamr@4: 	TUint32 iSpare2;
williamr@4: };
williamr@4: 
williamr@4: #endif // STREAMELEMENT_H