/*

* Copyright (c) 2009-2010 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:

* Manages all CommsDat table specific CenRep listeners.

*

*/

#include "cmmcache.h"

#include "cmmlistenermanager.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "cmmlistenermanagerTraces.h"

#endif

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

// Two phased construction.

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

//

CCmmListenerManager* CCmmListenerManager::NewL( CCmmCache* aCache )

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_NEWL_ENTRY );

    CCmmListenerManager* self = CCmmListenerManager::NewLC( aCache );

    CleanupStack::Pop( self );

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_NEWL_EXIT );

    return self;

    }

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

// Two phased construction.

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

//

CCmmListenerManager* CCmmListenerManager::NewLC( CCmmCache* aCache )

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_NEWLC_ENTRY );

    CCmmListenerManager* self = new( ELeave ) CCmmListenerManager( aCache );

    CleanupStack::PushL( self );

    self->ConstructL();

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_NEWLC_EXIT );

    return self;

    }

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

// Destructor.

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

//

CCmmListenerManager::~CCmmListenerManager()

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_CCMMLISTENERMANAGER_ENTRY );

    // The destructor of each listener will cancel their own active request.

    iListeners.ResetAndDestroy();

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_CCMMLISTENERMANAGER_EXIT );

    }

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

// Constructor.

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

//

CCmmListenerManager::CCmmListenerManager( CCmmCache* aCache ) : iCache( aCache )

    {

    OstTraceFunctionEntry0( DUP1_CCMMLISTENERMANAGER_CCMMLISTENERMANAGER_ENTRY );

    OstTraceFunctionExit0( DUP1_CCMMLISTENERMANAGER_CCMMLISTENERMANAGER_EXIT );

    }

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

// Second phase constructor.

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

//

void CCmmListenerManager::ConstructL()

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_CONSTRUCTL_ENTRY );

    // Create the basic set of listeners, start them if necessary and store them in iListeners-array.

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_CONSTRUCTL_EXIT );

    }

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

// Adds a new listener to monitor for changes in the given database table.

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

//

void CCmmListenerManager::AddListenerL( TUint32 aIdentifier )

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_ADDLISTENERL_ENTRY );

    TBool duplicateFound( EFalse );

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

        {

        if ( iListeners[i]->GetTableId() == aIdentifier )

            {

            duplicateFound = ETrue;

            break;

            }

        }

    if ( !duplicateFound )

        {

        CCmmDbChangeListener* dbChangeListener = CCmmDbChangeListener::NewLC( this, aIdentifier );

        iListeners.AppendL( dbChangeListener );

        CleanupStack::Pop( dbChangeListener );

        TInt err = dbChangeListener->Start();

        if ( err )

            {

            iCache->DbChangeError( aIdentifier );

            }

        }

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_ADDLISTENERL_EXIT );

    }

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

// Stops and deletes the listener monitoring the given database table.

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

//

TInt CCmmListenerManager::RemoveListener( TUint32 aIdentifier )

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_REMOVELISTENER_ENTRY );

    TInt res( KErrNotFound );

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

        {

        if ( iListeners[i]->GetTableId() == aIdentifier )

            {

            delete iListeners[i];

            iListeners.Remove( i );

            res = KErrNone;

            break;

            }

        }

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_REMOVELISTENER_EXIT );

    return res;

    }

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

// Tells the listener manager that a change has been detected in the given

// database table.

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

//

void CCmmListenerManager::DbChangeDetected( TUint32 aIdentifier )

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_DBCHANGEDETECTED_ENTRY );

    iCache->DbChangeDetected( aIdentifier );

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_DBCHANGEDETECTED_EXIT );

    }

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

// Tells the listener manager that an error has been encountered while

// listening the given database table. Change notifications will not be working

// for this database table.

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

//

void CCmmListenerManager::DbChangeError( TUint32 aIdentifier )

    {

    OstTraceFunctionEntry0( CCMMLISTENERMANAGER_DBCHANGEERROR_ENTRY );

    iCache->DbChangeError( aIdentifier );

    OstTraceFunctionExit0( CCMMLISTENERMANAGER_DBCHANGEERROR_EXIT );

    }

// End of file