contextframework/cfw/inc/cfservices/CFContextDataProxy.h
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     1 /*
       
     2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  CCFContextDataProxy class declaration.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef C_CFCONTEXTDATAPROXY_H
       
    20 #define C_CFCONTEXTDATAPROXY_H
       
    21 
       
    22 #include <cfcontextdataobject.h>
       
    23 
       
    24 // CONSTANTS
       
    25 const TUid KContextDataProxyUid = { 0x2000B4CF };
       
    26 
       
    27 /**
       
    28 * This class is intended to use to transmit data object send from
       
    29 * a client process to all interested subscribers. The reason for this
       
    30 * is that a context data sent from a client process need to be internalized
       
    31 * in to object before it can be published. Since cfserver don't know and
       
    32 * does not need to know the corret object CCFContextDataProxy is used to
       
    33 * transmit the data which can be then processed and set in a context
       
    34 * indication.
       
    35 *
       
    36 * Do not use this class for any other purposes!
       
    37 *
       
    38 * @internal
       
    39 * @since S60 5.0
       
    40 * @lib None
       
    41 */
       
    42 NONSHARABLE_CLASS( CCFContextDataProxy ): public CCFContextDataObject
       
    43     {
       
    44     public:
       
    45     
       
    46         // Two phased constructors
       
    47         IMPORT_C static CCFContextDataProxy* NewL();
       
    48         IMPORT_C static CCFContextDataProxy* NewLC();
       
    49         
       
    50         // Destructor
       
    51         ~CCFContextDataProxy();
       
    52         
       
    53     public: // New methods
       
    54     
       
    55         /**
       
    56         * Set context data uid.
       
    57         *
       
    58         * @since S60 5.0
       
    59         * @param aUid The context data UID.
       
    60         * @return None.
       
    61         */
       
    62         IMPORT_C void SetContextDataUid( const TUid& aUid );
       
    63     
       
    64         /**
       
    65         * Set context data object.
       
    66         * 
       
    67         * @since S60 5.0
       
    68         * @param aData Streamed context data.
       
    69         * @return None.
       
    70         */
       
    71         IMPORT_C void SetContextData( HBufC8* aData );
       
    72     
       
    73     private: // From base class CCFContextDataObject
       
    74     
       
    75         // @see CCFContextDataObject
       
    76         const TUid& Uid() const;
       
    77         
       
    78         // @see CCFContextDataObject
       
    79         void ExternalizeL( RWriteStream& aStream );
       
    80 
       
    81         // @see CCFContextDataObject
       
    82         void InternalizeL( RReadStream& aStream );
       
    83 
       
    84         // @see CCFContextDataObject
       
    85         TInt Size() const;
       
    86 
       
    87     private:
       
    88 
       
    89         CCFContextDataProxy();
       
    90         void ConstructL();
       
    91         
       
    92     private: // Data
       
    93     
       
    94         /** Context data */
       
    95         HBufC8* iData;
       
    96         
       
    97         /** Context data uid */
       
    98         TUid iUid;
       
    99     };
       
   100 
       
   101 #endif