1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 

    17 #ifndef STREAMELEMENT_H

    18 #define STREAMELEMENT_H

    19 

    20 #include <e32base.h>

    21 #include <s32mem.h>

    22 

    23 #include <rm_debug_api.h>

    24 #include <debuglogging.h>

    25 

    26 /**

    27 @internalTechnology 

    28 @released

    29 

    30 Pure virtual base class for streamable classes. 

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

    32 */

    33 class CStreamElementBase : public CBase

    34 {

    35 

    36 public:

    37 	

    38 	virtual ~CStreamElementBase()

    39 		{

    40 		}

    41 

    42 	/** 

    43 	Creates HBufC8 with a representation of ’this’ object

    44 	*/

    45 	IMPORT_C  HBufC8* MarshalDataL();

    46 

    47 

    48 	TInt static MaxSize()

    49 		{

    50 		return 0;

    51 		}

    52 

    53 	virtual TInt Size() const = 0;

    54 

    55 	// Initializes ’this’ from stream

    56 	virtual void InternalizeL( RReadStream & aStream ) = 0;

    57 

    58 	// Writes ’this’ to the stream

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

    60 

    61 	TUint32 iSpare1;

    62 	TUint32 iSpare2;

    63 };

    64 

    65 #endif // STREAMELEMENT_H