codhandler/codeng/inc/FileSaver.h
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     1 /*
       
     2 * Copyright (c) 2005 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 "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 *      Declaration of class CFileSaver.   
       
    16 *      
       
    17 *
       
    18 */
       
    19 
       
    20 
       
    21 #ifndef FILE_SAVER_H
       
    22 #define FILE_SAVER_H
       
    23 
       
    24 // INCLUDE FILES
       
    25 
       
    26 #include <e32base.h>
       
    27 #include <f32file.h>
       
    28 #include "CodSaver.h"
       
    29 
       
    30 // FORWARD DECLARATION
       
    31 
       
    32 class CDocumentHandler;
       
    33 class CDrmHandler;
       
    34 class CCodBuffStorage;
       
    35 class CCodData;
       
    36 
       
    37 // CLASS DECLARATION
       
    38 
       
    39 /**
       
    40 * File saver (saving to file system). Handles DRM packaged objects too.
       
    41 */
       
    42 NONSHARABLE_CLASS( CFileSaver ): public CCodSaver
       
    43     {
       
    44     public:     // Construct / destruct
       
    45 
       
    46         /**
       
    47         * Two phase constructor. Leaves on failure.
       
    48         * @param aType Data type.
       
    49         * @param aFs File Server session.
       
    50         * @param aDocHandler Document Handler.
       
    51         * @param aTempPath Temp path.
       
    52         * @param aRootPath Root path.
       
    53         * @param aFname File name.
       
    54         * @return The constructed saver.
       
    55 
       
    56         */      
       
    57         static CFileSaver* NewL
       
    58             (
       
    59             const TDesC8& aType,
       
    60             RFs& aFs,
       
    61             CDocumentHandler& aDocHandler,
       
    62             const TFileName& aTempPath,
       
    63             const TFileName& aRootPath,
       
    64             const TFileName& aFname
       
    65             );
       
    66         
       
    67         /**
       
    68         * Destructor.
       
    69         */
       
    70         virtual ~CFileSaver();
       
    71 
       
    72     public:     // from CCodSaver
       
    73 
       
    74         /**
       
    75         * Open temporary store for download.
       
    76         */
       
    77         virtual void OpenStoreL();
       
    78         
       
    79         /**
       
    80         * Append data to store.
       
    81         * @param aData Data to append.
       
    82         * @return Error code.
       
    83         */
       
    84         virtual TInt AppendData( const TDesC8& aData );
       
    85         
       
    86         /**
       
    87         * Download finished, close temporary store.
       
    88         */
       
    89         virtual void CloseStore();
       
    90 
       
    91         /**
       
    92         * Check if attributes of received content match descriptor data.
       
    93         * Leaves with KErrCodAttributeMismatch in case of mismatch.
       
    94         * @param aData Data to match.
       
    95         */
       
    96         virtual void CheckResponseAttributesL( const CCodData& aData );
       
    97 
       
    98         /**
       
    99         * Install downloaded content.
       
   100         * @param aStatus Completes when done.
       
   101         * @param aName Preferred name.
       
   102         * @param aAttached. ETrue if the download is attached and playing progressively.
       
   103         */
       
   104         virtual void InstallL( TRequestStatus* aStatus, const TDesC& aName, const TBool aAttached );
       
   105 
       
   106         /**
       
   107         * Perform bulk install for the downloaded media objects
       
   108         * @param aData CODData.
       
   109         * @param aAttached. ETrue if the download is attached and playing progressively.
       
   110         */        
       
   111         virtual void BulkInstallL( TRequestStatus* aStatus, const CCodData &aData, const TBool aAttached );
       
   112         /**
       
   113         * Cancel installation.
       
   114         */
       
   115         virtual void CancelInstall();
       
   116 
       
   117         /**
       
   118         * Release content (take ownership of content from saver).
       
   119         * @param aFname File name of content returned here.
       
   120         * @param aHandler Handler UID returned here.
       
   121         */
       
   122         virtual void ReleaseContent( TFileName& aFname, TUid& aHandler );
       
   123 
       
   124         /**
       
   125         * Get the downloaded file size.
       
   126         */
       
   127         virtual TInt DownloadedFileSize();
       
   128         
       
   129         /**
       
   130         * Discard the old contents
       
   131         */        
       
   132         virtual void ResetL();
       
   133         
       
   134         /**
       
   135         * Clean up.
       
   136         */
       
   137         virtual void Cleanup( TBool aDeleteFile  );
       
   138   
       
   139 		/**
       
   140         * Release file name (take ownership of content from saver).
       
   141         * @param aFname File name of content returned here.
       
   142         */
       
   143         virtual void ReleaseFileName( TFileName& aFname);
       
   144         
       
   145         /**
       
   146         * Get Name 
       
   147         * @return Name of Saver
       
   148         */        
       
   149         virtual HBufC* NameL ( ) const ;
       
   150 
       
   151 
       
   152     protected:  // Construct / destruct
       
   153 
       
   154         /**
       
   155         * Constructor.
       
   156         * @param aType Data type.
       
   157         * @param aFs File Server session.
       
   158         * @param aDocHandler Document Handler.
       
   159         * @param aTempPath Temp path.
       
   160         * @param aRootPath Root path.
       
   161         * @param aFname File name of content.
       
   162         */      
       
   163         CFileSaver
       
   164             (
       
   165             const TDesC8& aType,
       
   166             RFs& aFs,
       
   167             CDocumentHandler& aDocHandler,
       
   168             const TFileName& aTempPath,
       
   169             const TFileName& aRootPath,
       
   170             const TFileName& aFname
       
   171             );
       
   172 
       
   173         /**
       
   174         * Second phase constructor. Leaves on failure.
       
   175         */      
       
   176         void ConstructL();
       
   177 
       
   178         /**
       
   179         * Update saved file to DCFRepository.
       
   180         * @param aFileName File name of new file.
       
   181         */
       
   182         void UpdateDCFRepositoryL( const TDesC& aFileName );
       
   183         
       
   184         /**
       
   185         * Update repository about the new file.
       
   186         * @param aFileName File name of new file.
       
   187         */
       
   188         void NotifyMediaGalleryL( const TDesC& aFileName );
       
   189         
       
   190         /**
       
   191         * Calls MediaGallery Update method so that media gallery
       
   192         * knows update its view.
       
   193         * @param aFileName File name of new file.
       
   194         */
       
   195         void UpdateMediaGalleryIfNeededL( const TDesC& aFileName );
       
   196         
       
   197        
       
   198        /**
       
   199         * Set progressive mode download
       
   200         * @param aValue ETrue if progressive mode
       
   201         */
       
   202         void SetProgressiveMode( TBool aValue );
       
   203        
       
   204         /**
       
   205         * Called if download completed.
       
   206         */
       
   207         void OnComplete();
       
   208          
       
   209         /**
       
   210         * Writes Buffer data to file
       
   211         */
       
   212         void FlushL();
       
   213 
       
   214        
       
   215     protected:  // data
       
   216 
       
   217         CDocumentHandler& iDocHandler;  ///< Document Handler. Not owned.
       
   218         RFs& iFs;                       ///< File Server session. Not owned.
       
   219         RFile iFile;                    ///< Temp file for content body. Own.
       
   220         const TFileName& iTempPath;     ///< Temp file path.
       
   221         const TFileName& iRootPath;     ///< Root path.
       
   222         CDrmHandler* iDrmHandler;       ///< DRM Handler or NULL. Owned.
       
   223         TFileName iFname;               ///< File name.
       
   224         
       
   225         //Double buff chaanges
       
   226         TInt32  iBufferedSize;          // How much data received over the air (but not necessarily all in file yet)
       
   227         TInt32  iBufferSize;            // disk io buffer size - bytes
       
   228         TInt32  iLength;                // EDlAttrLength
       
   229         TBool   iProgressiveDownload;   // EDlAttrProgressive
       
   230         CCodBuffStorage *iStorage;      //Implenments double buffering foe storing downloaded data
       
   231         
       
   232         
       
   233     friend class CCodBuffStorage;       
       
   234     };
       
   235 
       
   236 #endif /* def FILE_SAVER_H */