musichomescreen_multiview/musiccontentpublisher/src/pluginmanager.cpp
changeset 0 ff3acec5bc43
child 17 c8156a91d13c
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     1 /*
       
     2 * Copyright (c) 2008-2008 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:  Plugin manager, responsible to load the plugins.
       
    15 *
       
    16 */
       
    17 
       
    18 #include <mpxlog.h>                     // MPX_DEBUG
       
    19 #include <ecom/ecom.h>
       
    20 // for CeanupResetAndDestroyPushL
       
    21 #include <mmf/common/mmfcontrollerpluginresolver.h>
       
    22 
       
    23 #include "musiccontentpublisher.h"
       
    24 #include "pluginmanager.h"
       
    25 
       
    26 // ======== MEMBER FUNCTIONS ========
       
    27 
       
    28 // ---------------------------------------------------------------------------
       
    29 // Constructor
       
    30 // ---------------------------------------------------------------------------
       
    31 //
       
    32 CPluginManager::CPluginManager( TUid aUid, 
       
    33         TAny* aParameter, 
       
    34         CMusicContentPublisher* aContentPublisher) :
       
    35                 CActive( EPriorityStandard ), 
       
    36                 iUid( aUid ), 
       
    37                 iParameter( aParameter ), 
       
    38                 iContentPublisher(aContentPublisher)
       
    39     {
       
    40     }
       
    41 
       
    42 // ---------------------------------------------------------------------------
       
    43 //
       
    44 // ---------------------------------------------------------------------------
       
    45 //
       
    46 void CPluginManager::ConstructL()
       
    47     {
       
    48     MPX_DEBUG1("CPluginManager::ConstructL <---");
       
    49     iSession = &REComSession::OpenL();
       
    50     LoadPluginsL();
       
    51     iSession->NotifyOnChange( iStatus );
       
    52     CActiveScheduler::Add( this );
       
    53     SetActive();
       
    54     MPX_DEBUG1("CPluginManager::ConstructL --->");
       
    55     }
       
    56 
       
    57 // ---------------------------------------------------------------------------
       
    58 // Two-phased constructor.
       
    59 // ---------------------------------------------------------------------------
       
    60 //
       
    61 CPluginManager* CPluginManager::NewL( TUid aUid, 
       
    62         TAny *aParameter, 
       
    63         CMusicContentPublisher* aContentPublisher )
       
    64     {
       
    65     CPluginManager* self = CPluginManager::NewLC( aUid, 
       
    66             aParameter, 
       
    67             aContentPublisher );
       
    68     CleanupStack::Pop( self );
       
    69     return self;
       
    70     }
       
    71 
       
    72 // ---------------------------------------------------------------------------
       
    73 // Two-phased constructor.
       
    74 // ---------------------------------------------------------------------------
       
    75 //
       
    76 CPluginManager* CPluginManager::NewLC( TUid aUid, 
       
    77         TAny *aParameter,
       
    78         CMusicContentPublisher* aContentPublisher )
       
    79     {
       
    80     CPluginManager* self = new( ELeave ) CPluginManager( aUid, 
       
    81             aParameter, 
       
    82             aContentPublisher );
       
    83     CleanupStack::PushL( self );
       
    84     self->ConstructL();
       
    85     return self;
       
    86     }
       
    87 
       
    88 // ---------------------------------------------------------------------------
       
    89 // destructor
       
    90 // ---------------------------------------------------------------------------
       
    91 CPluginManager::~CPluginManager()
       
    92     {
       
    93     MPX_DEBUG1("CPluginManager::~CPluginManager <---");
       
    94     Cancel();
       
    95     CleanPluginsTable();
       
    96     iPluginMap.Close();
       
    97     if ( iSession )
       
    98         {
       
    99         iSession->Close();
       
   100         }
       
   101     REComSession::FinalClose();
       
   102     MPX_DEBUG1("CPluginManager::~CPluginManager --->");
       
   103     }
       
   104 
       
   105 // ---------------------------------------------------------------------------
       
   106 // Retuns a plugin by UID
       
   107 // ---------------------------------------------------------------------------
       
   108 //
       
   109 TAny* CPluginManager::GetImplementation( TUid aUid )
       
   110     {
       
   111     TInt32 key = aUid.iUid;
       
   112     TAny* ret= NULL;
       
   113     TAny** imp= NULL;
       
   114     imp = iPluginMap.Find( key );
       
   115     if ( imp )
       
   116         {
       
   117         ret = *imp;
       
   118         }
       
   119     return ret;
       
   120     }
       
   121 
       
   122 // ---------------------------------------------------------------------------
       
   123 // Retuns a plugin by index
       
   124 // ---------------------------------------------------------------------------
       
   125 //
       
   126 TAny* CPluginManager::GetImplementation( TInt aIndex )
       
   127     {
       
   128     TAny* ret= NULL;
       
   129     THashMapIter<TInt32, TAny*> iter( iPluginMap );
       
   130     TAny*const* ptr = iter.NextValue();
       
   131     for ( TInt i( 0 ); ptr; i++ )
       
   132         {
       
   133         if ( i == aIndex )
       
   134             {
       
   135             ret = *ptr;
       
   136             break;
       
   137             }
       
   138         ptr = iter.NextValue();
       
   139         }
       
   140     return ret;
       
   141     }
       
   142 
       
   143 // ---------------------------------------------------------------------------
       
   144 // Returns the count of the plug-ins.
       
   145 // ---------------------------------------------------------------------------
       
   146 //
       
   147 TInt CPluginManager::GetCount()
       
   148     {
       
   149     return iPluginMap.Count();
       
   150     }
       
   151 
       
   152 // ---------------------------------------------------------------------------
       
   153 // Loads the plugins.
       
   154 // ---------------------------------------------------------------------------
       
   155 //
       
   156 void CPluginManager::LoadPluginsL()
       
   157     {
       
   158     MPX_DEBUG1("CPluginManager::LoadPluginsL <---");
       
   159     // Read info about all implementations into infoArray
       
   160     RImplInfoPtrArray infoArray;
       
   161     CleanupResetAndDestroyPushL( infoArray );
       
   162 
       
   163     REComSession::ListImplementationsL( iUid, infoArray );
       
   164     for ( TInt i = 0; i < infoArray.Count(); i++ )
       
   165         {
       
   166         TUid current_plugin = infoArray[i]->ImplementationUid();
       
   167         TAny* plug( NULL );
       
   168         TUid temp;
       
   169         TInt err( KErrNone );
       
   170         TRAP( err, plug = REComSession::CreateImplementationL(
       
   171                         current_plugin,
       
   172                         temp,
       
   173                         iParameter ) );
       
   174         if ( err == KErrNone && plug )
       
   175             {
       
   176             CleanupStack::PushL( plug );
       
   177             TInt32 key = current_plugin.iUid;
       
   178             iPluginMap.InsertL( key, plug );
       
   179             CleanupStack::Pop( plug );
       
   180             }
       
   181         }
       
   182 
       
   183     CleanupStack::PopAndDestroy( &infoArray );
       
   184     MPX_DEBUG1("CPluginManager::LoadPluginsL --->");
       
   185     }
       
   186 
       
   187 // ---------------------------------------------------------------------------
       
   188 // Unloads the plgugins.
       
   189 // ---------------------------------------------------------------------------
       
   190 //        
       
   191 void CPluginManager::CleanPluginsTable()
       
   192     {
       
   193     MPX_DEBUG1("CPluginManager::CleanPluginsTable <---");
       
   194     THashMapIter<TInt32, TAny*> iter( iPluginMap );
       
   195     TAny*const* ptr = iter.NextValue();
       
   196     CBase* plug( NULL );
       
   197     const TInt32* pluginUid( NULL );
       
   198     while ( ptr )
       
   199         {
       
   200         plug = static_cast<CBase*>( *ptr );
       
   201         delete plug;
       
   202         plug = NULL;
       
   203         pluginUid = iter.CurrentKey();
       
   204         REComSession::DestroyedImplementation( TUid::Uid( *pluginUid ) );
       
   205         ptr = iter.NextValue();
       
   206         pluginUid = NULL;
       
   207         }
       
   208     MPX_DEBUG1("CPluginManager::CleanPluginsTable --->");
       
   209     }
       
   210 
       
   211 // ---------------------------------------------------------------------------
       
   212 //From CActive
       
   213 // ---------------------------------------------------------------------------
       
   214 //
       
   215 void CPluginManager::RunL()
       
   216     {
       
   217     MPX_DEBUG1("CPluginManager::RunL <---");
       
   218     CleanPluginsTable();
       
   219     iPluginMap.Close();
       
   220     iContentPublisher->ResetL();
       
   221     LoadPluginsL();
       
   222     iSession->NotifyOnChange( iStatus );
       
   223     SetActive();
       
   224     MPX_DEBUG1("CPluginManager::RunL --->");
       
   225     }
       
   226 
       
   227 // ---------------------------------------------------------------------------
       
   228 //From CActive
       
   229 // ---------------------------------------------------------------------------
       
   230 //
       
   231 void CPluginManager::DoCancel()
       
   232     {
       
   233     MPX_DEBUG1("CPluginManager::DoCancel <---");
       
   234     iSession->CancelNotifyOnChange( iStatus );
       
   235     MPX_DEBUG1("CPluginManager::DoCancel --->");
       
   236     }
       
   237 
       
   238 // ---------------------------------------------------------------------------
       
   239 //From CActive
       
   240 // ---------------------------------------------------------------------------
       
   241 //
       
   242 TInt CPluginManager::RunError( TInt /*aError*/ )
       
   243     {
       
   244     MPX_DEBUG1("CPluginManager::RunError <---");
       
   245     MPX_DEBUG1("CPluginManager::RunError --->");
       
   246     return KErrNone;
       
   247     }
       
   248 
       
   249 //  End of File
       
   250