/*

* Copyright (c) 2008-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Plugin manager, responsible to load the plugins.

*

*/

#include <mpxlog.h>                     // MPX_DEBUG

#include <ecom/ecom.h>

// for CeanupResetAndDestroyPushL

#include <mmf/common/mmfcontrollerpluginresolver.h>

#include "musiccontentpublisher.h"

#include "pluginmanager.h"

// ======== MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// Constructor

// ---------------------------------------------------------------------------

//

CPluginManager::CPluginManager( TUid aUid, 

        TAny* aParameter, 

        CMusicContentPublisher* aContentPublisher) :

                CActive( EPriorityStandard ), 

                iUid( aUid ), 

                iParameter( aParameter ), 

                iContentPublisher(aContentPublisher)

    {

    }

// ---------------------------------------------------------------------------

//

// ---------------------------------------------------------------------------

//

void CPluginManager::ConstructL()

    {

    MPX_DEBUG1("CPluginManager::ConstructL <---");

    iSession = &REComSession::OpenL();

    LoadPluginsL();

    iSession->NotifyOnChange( iStatus );

    CActiveScheduler::Add( this );

    SetActive();

    MPX_DEBUG1("CPluginManager::ConstructL --->");

    }

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CPluginManager* CPluginManager::NewL( TUid aUid, 

        TAny *aParameter, 

        CMusicContentPublisher* aContentPublisher )

    {

    CPluginManager* self = CPluginManager::NewLC( aUid, 

            aParameter, 

            aContentPublisher );

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CPluginManager* CPluginManager::NewLC( TUid aUid, 

        TAny *aParameter,

        CMusicContentPublisher* aContentPublisher )

    {

    CPluginManager* self = new( ELeave ) CPluginManager( aUid, 

            aParameter, 

            aContentPublisher );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// ---------------------------------------------------------------------------

// destructor

// ---------------------------------------------------------------------------

CPluginManager::~CPluginManager()

    {

    MPX_DEBUG1("CPluginManager::~CPluginManager <---");

    Cancel();

    CleanPluginsTable();

    iPluginMap.Close();

    if ( iSession )

        {

        iSession->Close();

        }

    REComSession::FinalClose();

    MPX_DEBUG1("CPluginManager::~CPluginManager --->");

    }

// ---------------------------------------------------------------------------

// Retuns a plugin by Implementation UID

// ---------------------------------------------------------------------------

//

TAny* CPluginManager::GetImplementation( TUid aUid )

    {

    TAny* ret= NULL;

    THashMapIter<TInt32, TAny*> iter( iPluginMap );

    const TInt32* pluginInstanceKey( NULL );

    TAny*const* ptr = iter.NextValue();

    while ( ptr )

        {

        pluginInstanceKey = iter.CurrentKey();

        if (REComSession::GetImplementationUidL( TUid::Uid( *pluginInstanceKey ) ) == aUid) 

            {

            ret = *ptr;

            break;

            }

        ptr = iter.NextValue();

        }

    return ret;

    }

// ---------------------------------------------------------------------------

// Retuns a plugin by index

// ---------------------------------------------------------------------------

//

TAny* CPluginManager::GetImplementation( TInt aIndex )

    {

    TAny* ret= NULL;

    THashMapIter<TInt32, TAny*> iter( iPluginMap );

    TAny*const* ptr = iter.NextValue();

    for ( TInt i( 0 ); ptr; i++ )

        {

        if ( i == aIndex )

            {

            ret = *ptr;

            break;

            }

        ptr = iter.NextValue();

        }

    return ret;

    }

// ---------------------------------------------------------------------------

// Returns the count of the plug-ins.

// ---------------------------------------------------------------------------

//

TInt CPluginManager::GetCount()

    {

    return iPluginMap.Count();

    }

// ---------------------------------------------------------------------------

// Loads the plugins.

// ---------------------------------------------------------------------------

//

void CPluginManager::LoadPluginsL()

    {

    MPX_DEBUG1("CPluginManager::LoadPluginsL <---");

    // Read info about all implementations into infoArray

    RImplInfoPtrArray infoArray;

    CleanupResetAndDestroyPushL( infoArray );

    REComSession::ListImplementationsL( iUid, infoArray );

    for ( TInt i = 0; i < infoArray.Count(); i++ )

        {

        TUid current_plugin = infoArray[i]->ImplementationUid();

        TAny* plug( NULL );

        TUid instanceKey;

        TInt err( KErrNone );

        TRAP( err, plug = REComSession::CreateImplementationL(

                        current_plugin,

                        instanceKey,

                        iParameter ) );

        if ( err == KErrNone && plug )

            {

            CleanupStack::PushL( plug );

            TInt32 key = instanceKey.iUid;

            iPluginMap.InsertL( key, plug );

            CleanupStack::Pop( plug );

            }

        }

    CleanupStack::PopAndDestroy( &infoArray );

    MPX_DEBUG1("CPluginManager::LoadPluginsL --->");

    }

// ---------------------------------------------------------------------------

// Unloads the plgugins.

// ---------------------------------------------------------------------------

//        

void CPluginManager::CleanPluginsTable()

    {

    MPX_DEBUG1("CPluginManager::CleanPluginsTable <---");

    THashMapIter<TInt32, TAny*> iter( iPluginMap );

    TAny*const* ptr = iter.NextValue();

    CBase* plug( NULL );

    const TInt32* pluginInstanceKey( NULL );

    while ( ptr )

        {

        plug = static_cast<CBase*>( *ptr );

        delete plug;

        plug = NULL;

        pluginInstanceKey = iter.CurrentKey();

        REComSession::DestroyedImplementation( TUid::Uid( *pluginInstanceKey ) );

        ptr = iter.NextValue();

        pluginInstanceKey = NULL;

        }

    MPX_DEBUG1("CPluginManager::CleanPluginsTable --->");

    }

// ---------------------------------------------------------------------------

//From CActive

// ---------------------------------------------------------------------------

//

void CPluginManager::RunL()

    {

    MPX_DEBUG1("CPluginManager::RunL <---");

    CleanPluginsTable();

    iPluginMap.Close();

    iContentPublisher->ResetL();

    LoadPluginsL();

    iSession->NotifyOnChange( iStatus );

    SetActive();

    MPX_DEBUG1("CPluginManager::RunL --->");

    }

// ---------------------------------------------------------------------------

//From CActive

// ---------------------------------------------------------------------------

//

void CPluginManager::DoCancel()

    {

    MPX_DEBUG1("CPluginManager::DoCancel <---");

    iSession->CancelNotifyOnChange( iStatus );

    MPX_DEBUG1("CPluginManager::DoCancel --->");

    }

// ---------------------------------------------------------------------------

//From CActive

// ---------------------------------------------------------------------------

//

TInt CPluginManager::RunError( TInt /*aError*/ )

    {

    MPX_DEBUG1("CPluginManager::RunError <---");

    MPX_DEBUG1("CPluginManager::RunError --->");

    return KErrNone;

    }

//  End of File