1 /*

     2 * Copyright (c) 2006-2006 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:       All memory chunk data functions

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 

    22 

    23 

    24 #ifndef XMLENGINE_CHUNKCONTAINER_H_INCLUDED

    25 #define XMLENGINE_CHUNKCONTAINER_H_INCLUDED

    26 

    27 #include "xmlengdatacontainer.h"

    28 

    29 

    30 /**

    31 * Instance of TXmlEngChunkContainer class represents data stored in RChunks in DOM tree

    32 *

    33 * RChunk data is treated in general as text nodes in DOM tree.

    34 * Some of the fields in xmlNode structure are reused in order to save memory. 

    35 * Data is stored in memory referenced to by RChunk.

    36 *

    37 * Sample code for creating chunk container:

    38 * @code  

    39 *      RXmlEngDOMImplementation domImpl;

    40 *      domImpl.OpenL();        ///< opening DOM implementation object 

    41 *      RXmlEngDocument iDoc; 

    42 *      ///< create document element

    43 *      TXmlEngElement elem = iDoc.CreateDocumentElementL(_L8("doc"));

    44 *      ///< create RChunk object with chunkName name and size

    45 *      RChunk chunk;

    46 *      chunk.CreateGlobal(chunkName, size, maxSize);

    47 *      CleanupClosePushL(chunk); 

    48 *      ///< create chunk container from Rchunk object with offset to the 

    49 *      ///< binary data in chunk and binary data size in chunk (binarySize) 

    50 *      TXmlEngChunkContainer binData = iDoc.CreateChunkContainerL(

    51 *									cid,chunk,offset,binarySize); 

    52 *      ///< append chunkcontainer to the dom tree          

    53 *      TXmlEngNode ref = iDoc.DocumentElement().AppendChildL(binData);

    54 *       ///< closing all opened objects

    55 *      CleanupStack::PopAndDestroy();//chunk

    56 *      iDoc.Close();              

    57 *      domImpl.Close();

    58 * @endcode 

    59 *

    60 * @lib XmlEngineDOM.lib

    61 * @since S60 v3.2

    62 */

    63 class TXmlEngChunkContainer : public TXmlEngDataContainer

    64 {

    65 public:

    66     /**

    67      * Get memory chunk reference

    68      *

    69      * @since S60 v3.2

    70      * @return Memory chunk reference

    71      * 

    72      */

    73     IMPORT_C RChunk& Chunk() const;

    74 

    75     /**

    76      * Get offset of binary data in memory chunk

    77      *

    78      * @since S60 v3.2

    79      * @return Offset of binary data in memory chunk

    80      */

    81     IMPORT_C TUint ChunkOffset() const;   

    82 	

    83 protected:

    84     /**

    85      * Default constructor

    86 	 *

    87      * @since S60 v3.1

    88      */

    89 	inline TXmlEngChunkContainer(); 

    90 	

    91     /**

    92      * Constructor

    93      *

    94      * @since S60 v3.1

    95      * @param aInternal node pointer

    96      */

    97 	inline TXmlEngChunkContainer(void* aInternal);

    98 };

    99 

   100 

   101 

   102 #include "xmlengchunkcontainer.inl"

   103 

   104 #endif /* XMLENGINE_CHUNKCONTAINER_H_INCLUDED */