1 /*

     2 * Copyright (c) 2009 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:

    15 *

    16 */

    17 #include <s32mem.h>

    18 #include "tsserializeddataprovider.h"

    19 #include "tsmodel.h"

    20 // -----------------------------------------------------------------------------

    21 /**

    22  * Leaving constructor. 

    23  * @param observer - data observer

    24  */

    25 CTsSerializedDataProvider* CTsSerializedDataProvider::NewL(MTsDataObserver &observer)

    26 {

    27     return new (ELeave) CTsSerializedDataProvider(observer);

    28     

    29 }

    30 

    31 // -----------------------------------------------------------------------------

    32 /**

    33  * Constructor

    34  * @param observer - data observer

    35  */

    36 CTsSerializedDataProvider::CTsSerializedDataProvider(MTsDataObserver& observer)

    37 :

    38     iObserver(observer)

    39 {}

    40 

    41 // -----------------------------------------------------------------------------

    42 /**

    43  * Destructor

    44  */

    45 CTsSerializedDataProvider::~CTsSerializedDataProvider()

    46 {

    47     iData.Close();

    48 }

    49 

    50 // -----------------------------------------------------------------------------

    51 /**

    52  * Interface implementation.

    53  * @see MTsDataProvider::Data()

    54  */

    55 const TDesC8& CTsSerializedDataProvider::Data() const

    56 {

    57     return iData;

    58 }

    59 

    60 // -----------------------------------------------------------------------------

    61 /**

    62  * Interface implementation.

    63  * @see MTsModelObserver::dataChanged(MTsModel &)

    64  */

    65 void CTsSerializedDataProvider::DataChanged(MTsModel &model)

    66 {

    67     serializeModel(model);

    68 }

    69 

    70 // -----------------------------------------------------------------------------

    71 /**

    72  * Serialize source model into internal data storage

    73  * @param src - model

    74  */

    75 void CTsSerializedDataProvider::serializeModel(const MTsModel &src)

    76 {

    77     TRAPD(errNo, serializeModelL(src));

    78     if(KErrNone == errNo ) {

    79         iObserver.DataChanged();

    80     }

    81 }

    82 

    83 // -----------------------------------------------------------------------------

    84 /**

    85  * Serialize source model into internal data storage. Function can leave.

    86  * @param src - source model

    87  */

    88 void CTsSerializedDataProvider::serializeModelL(const MTsModel &src)

    89 {

    90     const TInt KExpandSize = 256;

    91     CBufFlat* buf = CBufFlat::NewL(KExpandSize);

    92     CleanupStack::PushL(buf);

    93     RBufWriteStream stream(*buf); 

    94     CleanupClosePushL(stream);

    95     

    96     serializeModelL(stream, src);

    97     

    98     CleanupStack::PopAndDestroy(&stream);

    99     iData.Close();

   100     iData.CreateL(buf->Size());

   101     buf->Read(0, iData, buf->Size());

   102     CleanupStack::PopAndDestroy(buf);

   103 }

   104 

   105 // -----------------------------------------------------------------------------

   106 /**

   107  * Serialize source model into destination stream. Function can leave.

   108  * @param dst - destination stream

   109  * @param src - source model

   110  */

   111 void CTsSerializedDataProvider::serializeModelL(RWriteStream& dst, const MTsModel &src)

   112 {

   113     dst.WriteInt32L( src.Count() );

   114     for (TInt iter(0); iter < src.Count(); ++iter) {

   115         dst << src.ItemL( iter );

   116     }

   117 }