/*

* Copyright (c) 2003 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:  Implementation of the class CMcn.

*

*/

// INCLUDE FILES

#include "CbsLogger.h"

// CONSTANTS

const TInt KReservedSpaceForMcnObservers = 3;

// ==================== LOCAL FUNCTIONS ====================

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

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

// CMcn::CMcn

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CMcn::CMcn()

    {

    }

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

// CMcn::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CMcn::ConstructL()

    {    

    CBSLOGSTRING("CBSMCNCLIENT: >>> CMcn::ConstructL()");    

    User::LeaveIfError( iSession.Connect() );

    iObservers = new ( ELeave ) CArrayPtrFlat< MCbsMcnObserver >

        ( KReservedSpaceForMcnObservers );

    iMcnListener = CCbsMcnListener::NewL( *this, iSession );

    CBSLOGSTRING("CBSMCNCLIENT: <<< CMcn::ConstructL()");

    }

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

// CMcn::NewL

// Two-phased constructor.

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

//

EXPORT_C CMcn* CMcn::NewL() 

    {

    CMcn* self = new ( ELeave ) CMcn;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

// Destructor

EXPORT_C CMcn::~CMcn() 

    {

    if ( iObservers != NULL ) 

        {

        iObservers->ResetAndDestroy();

        }

    delete iObservers;

    delete iMcnListener;

    iSession.Close();

    }

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

// CMcn::RegisterL

// Registers an observer to CBS server.

// (other items were commented in a header).

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

//

EXPORT_C void CMcn::RegisterL( 

    MCbsMcnObserver* aObserver, 

    const CMcnTopicArray& aArray ) 

    {

    CBSLOGSTRING("CBSMCNCLIENT: >>> CMcn::RegisterL()");

    __ASSERT_DEBUG( aObserver != 0, CbsMcnPanic( EMcnObserverNull ) );

    iObservers->AppendL( aObserver );

    iSession.RegisterL( aArray );

    CBSLOGSTRING("CBSMCNCLIENT: <<< CMcn::RegisterL()");

    }

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

// CMcn::UnregisterL

// Unregisters a previously registered MCN observer clearing

// any topic subscriptions of this client in CBS server.

// (other items were commented in a header).

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

//

EXPORT_C void CMcn::Unregister( 

    MCbsMcnObserver* aObserver )

    {

    CBSLOGSTRING("CBSMCNCLIENT: >>> CMcn::Unregister()");

    __ASSERT_DEBUG( aObserver !=0 , CbsMcnPanic( EMcnObserverNull ) );

    TInt count( iObservers->Count() );

    for( TInt i = 0; i < count; i++ )

        {

        MCbsMcnObserver* observer = iObservers->At( i );

        if ( observer == aObserver )

            {

            iObservers->Delete( i );

            break;

            }

        }

    // ignore result for now

    TInt result( KErrNone );

    TRAP( result, iSession.ClearSubscriptionsL() );

    CBSLOGSTRING("CBSMCNCLIENT: <<< CMcn::Unregister()");

    }

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

// CMcn::GetCellInfo

// Retrieves the current MCN message (Cell Info, topic 050) from CBS 

// server. 

// (other items were commented in a header).

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

//

EXPORT_C TInt CMcn::GetCellInfo( 

    TDes& aMcnMessage ) const

    {

    return iSession.GetCellInfo( aMcnMessage );

    }

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

// CMcn::RelayMessageL

// Relays aMcnMessage and topic number to the registered observers.

// (other items were commented in a header).

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

//

void CMcn::RelayMessage( 

    TCbsMcnMessage& aMcnMessage )

    {

    CBSLOGSTRING("CBSMCNCLIENT: >>> CMcn::RelayMessage()");

    TInt count( iObservers->Count() );

    CBSLOGSTRING2("CBSMCNCLIENT: CMcn::RelayMessage(): topicNumber: %d", aMcnMessage.iTopicNumber );

    CBSLOGSTRING2("CBSMCNCLIENT: CMcn::RelayMessage(): Network mode: %d (0=GSM, 1=WCDMA, 2=Not defined)", aMcnMessage.iNetworkMode );

    CBSLOGSTRING2("CBSMCNCLIENT: CMcn::RelayMessage(): Observer count: %d", count );

    for ( TInt i = 0; i < count; )

        {

        TInt prevCount = count;

        CBSLOGSTRING2("CBSMCNCLIENT: CMcn::RelayMessage(): Calling CellInfoChanged... Observer: %d", i);

        // Notify all registered observers        

        iObservers->At( i )->CellInfoChanged( aMcnMessage );        

        CBSLOGSTRING("CBSMCNCLIENT: CMcn::RelayMessage(): CellInfoChanged call finished.");

        // Check if the client unregistered it's observer. If so, we don't

        // increase the loop counter.

        count = iObservers->Count();

        if ( count == prevCount )

            {

            i++;

            }        

        }

    CBSLOGSTRING("CBSMCNCLIENT: <<< CMcn::RelayMessage()");

    }

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

// CMcn::GetInfoMessage

// Retrieves the current info message from CBS server. 

//

// (other items were commented in a header).

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

//

EXPORT_C TInt CMcn::GetInfoMessage( 

    TDes& aInfoMessage, 

    TInt aTopicNumber ) const

    {

    return iSession.GetInfoMessage( aInfoMessage, aTopicNumber );   

    }

//  End of File