upnpframework/upnpmusicadapter/inc/upnpmpxhelper.h
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     1 /*
       
     2 * Copyright (c) 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 "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:  Helper class for some common MPX routines
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef C_UPNPMPXHELPER_H
       
    20 #define C_UPNPMPXHELPER_H
       
    21 
       
    22 // INCLUDES
       
    23 #include <e32base.h>
       
    24 #include "mpxmediatorobserver.h" // base class
       
    25 #include "mpxcollectionobserver.h" // base class
       
    26 
       
    27 // FORWARD DECLARATIONS
       
    28 class CMPXMedia;
       
    29 class MUPnPMpxHelperObserver;
       
    30 class MMPXHarvesterUtility;
       
    31 class MMPXCollectionUtility;
       
    32 class CMPXCollectionMediator;
       
    33 
       
    34 
       
    35 /**
       
    36  * A helper class for some common MPX routines
       
    37  *
       
    38  * @lib upnpmusicadapter.lib
       
    39  * @since S60 v3.1
       
    40  */
       
    41 class CUPnPMpxHelper : public CBase
       
    42     , public MMPXMediatorObserver
       
    43     , public MMPXCollectionObserver
       
    44     {
       
    45 
       
    46 public:
       
    47 
       
    48     /**
       
    49      * 1st phase constructor
       
    50      *
       
    51      * @param aModeId mode passed to MPX framework
       
    52      * @return a new CUPnPPlayListFiller instance
       
    53      * @since Series 60 3.1
       
    54      */
       
    55     static CUPnPMpxHelper* NewL( const TUid& aModeId );
       
    56 
       
    57     /**
       
    58      * Destructor
       
    59      *
       
    60      * @since Series 60 3.1
       
    61      */
       
    62     virtual ~CUPnPMpxHelper();
       
    63 
       
    64 public: // the interface
       
    65 
       
    66     /**
       
    67      * Add a song or a playlist synchronously.
       
    68      * Note: does not take ownership of aMedia object. Caller must
       
    69      * delete aMedia after calling this method.
       
    70      * see mpxcollectionhelper in mpxmusicplayer
       
    71      * @param aMedia representation of the media to be added
       
    72      */
       
    73     void AddTrackL( CMPXMedia* aMedia );
       
    74 
       
    75     /**
       
    76      * add a song or a playlist asynchronously.
       
    77      * Note: does not take ownership of aMedia object. Caller must
       
    78      * delete aMedia after calling this method.
       
    79      * see mpxcollectionuihelper in mpxmusicplayer
       
    80      * @param aMedia representation of the media to be added
       
    81      * @param aObserver the observer interface
       
    82      */
       
    83     void AddPlaylistL( CMPXMedia* aMedia );
       
    84 
       
    85     /**
       
    86      * Open the collection in embedded mode with a Media Object.
       
    87      * see mpxcollectionuihelper in mpxmusicplayer
       
    88      * @param aHostId Host Process UID to identify this embedded instance
       
    89      * @param aMedia Media Object to open
       
    90      */
       
    91     void AddAndOpenL( const TUid& aHostId, CMPXMedia& aMedia );
       
    92 
       
    93 protected:
       
    94 
       
    95     /**
       
    96      * Retrieve collection from URI
       
    97      */
       
    98     TInt FindCollectionIdL( const TDesC& aUri );
       
    99 
       
   100     /**
       
   101      * retrieve information for the required attributes
       
   102      */
       
   103     void FillInPlaylistDetailsL( CMPXMedia& aMedia );
       
   104 
       
   105     /**
       
   106      * see MMPXMediatorObserver
       
   107      */
       
   108     void HandleMediatorPathUpdatedL(
       
   109         CMPXMedia*& /*aMedia*/, TUid /*aOldPath*/ ) {}
       
   110 
       
   111     /**
       
   112      * see MMPXCollectionObserver
       
   113      */
       
   114     void HandleCollectionMediaL(
       
   115         const CMPXMedia& /*aMedia*/, TInt /*aError*/) {}
       
   116 
       
   117     /**
       
   118      * see MMPXCollectionObserver
       
   119      */
       
   120     void HandleCollectionMessageL(
       
   121         const TMPXCollectionMessage& /*aMessage*/ ) {}
       
   122 
       
   123     /**
       
   124      * see MMPXCollectionObserver
       
   125      */
       
   126     void HandleCollectionMessageL(
       
   127         const CMPXMessage& /*aMsg*/ ) {}
       
   128 
       
   129     /**
       
   130      * see MMPXCollectionObserver
       
   131      */
       
   132     void HandleOpenL(
       
   133         const CMPXMedia& /*aEntries*/,
       
   134         TInt /*aIndex*/, TBool /*aComplete*/, TInt /*aError*/ ) {}
       
   135 
       
   136     /**
       
   137      * see MMPXCollectionObserver
       
   138      */
       
   139     void HandleOpenL(
       
   140         const CMPXCollectionPlaylist& /*aPlaylist*/,
       
   141         TInt /*aError*/ ) {}
       
   142 
       
   143     /**
       
   144      * see MMPXCollectionObserver
       
   145      */
       
   146     void HandleCommandComplete(
       
   147         CMPXCommand* /*aCommandResult*/, TInt /*aError*/) {}
       
   148 
       
   149 private: // private methods
       
   150 
       
   151     /**
       
   152      * constructor
       
   153      */
       
   154     CUPnPMpxHelper::CUPnPMpxHelper();
       
   155 
       
   156     /**
       
   157      * 2nd phase constructor
       
   158      */
       
   159     void CUPnPMpxHelper::ConstructL( const TUid& aModeId );
       
   160 
       
   161 private: // members
       
   162 
       
   163     /**
       
   164      * MPX harvester utility
       
   165      */
       
   166     MMPXHarvesterUtility*       iHarvester;
       
   167 
       
   168     /**
       
   169      * MPX collection utility
       
   170      */
       
   171     MMPXCollectionUtility*      iCollectionUtil;
       
   172 
       
   173     /**
       
   174      * MPX collection mediator
       
   175      */
       
   176     CMPXCollectionMediator*     iMediator;
       
   177 
       
   178     /**
       
   179      * temporarily stored observer for async operations
       
   180      * NOT OWNED
       
   181      */
       
   182     MUPnPMpxHelperObserver*     iObserver;
       
   183 
       
   184     };
       
   185 
       
   186 /**
       
   187  * Callback ingterface for async methods in CUPnPMpxHelper
       
   188  */
       
   189 class MUPnPMpxHelperObserver
       
   190     {
       
   191 public:
       
   192 
       
   193     /**
       
   194      * async response for AddL
       
   195      */
       
   196     void HandleAddComplete( TInt aError );
       
   197 
       
   198     /**
       
   199      * async response for OpenL
       
   200      */
       
   201     void HandleOpenComplete( TInt aError );
       
   202 
       
   203     };
       
   204 
       
   205 #endif // C_UPNPMPXHELPER_H
       
   206