/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:    Message sending component for MPX views.*

*/

#include "IptvDebug.h"

#include "vcxviewmessageutility.h"

#include "vcxviewmessageutility.hrh"

// Each CCoeStatic object must have a unique TUid, let's use dll uid

const TUid KVcxViewMessageUtilitySingletonUid = { KVcxViewMessageUtilityDllUid };

// Negative priority destroys this singleton after AppUi is destroyed.

// This way all views can remove observers before this object is destroyed.

const TInt KVcxSingletonDestructionPriority( -1 );

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

// Static function that initializes the singleton object

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

//

EXPORT_C CVcxViewMessageUtility* CVcxViewMessageUtility::InstanceL()

    {

    IPTVLOGSTRING_LOW_LEVEL("CVcxViewMessageUtility::InstanceL"); 

    // Ownership of the object remains with CCoeEnv

    CVcxViewMessageUtility* instance = static_cast<CVcxViewMessageUtility*>( 

        CCoeEnv::Static( KVcxViewMessageUtilitySingletonUid ) );

    if ( !instance )

        {

        IPTVLOGSTRING_LOW_LEVEL("CVcxViewMessageUtility::InstanceL - Creating object"); 

        instance = new( ELeave ) CVcxViewMessageUtility();

        }

    return instance;

    }

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

// Destructor

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

//

EXPORT_C CVcxViewMessageUtility::~CVcxViewMessageUtility()

    {

    IPTVLOGSTRING_LOW_LEVEL("CVcxViewMessageUtility destructor"); 

    iObservers.Close();

    }

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

// Constructor

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

//

CVcxViewMessageUtility::CVcxViewMessageUtility() :

        CCoeStatic( KVcxViewMessageUtilitySingletonUid, 

                    KVcxSingletonDestructionPriority )

    {

    }

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

// Adds observer

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

//

EXPORT_C void CVcxViewMessageUtility::AddObserverL( MVcxViewMessageObserver& aObserver )

    {

    IPTVLOGSTRING2_LOW_LEVEL("CVcxViewMessageUtility::AddObserverL - Adding %X", &aObserver); 

    TInt errorCode = KErrNoMemory;

    MtvObserverUtils::AddObserverL(iObservers, aObserver, errorCode);

    }

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

// Removes observer

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

//

EXPORT_C void CVcxViewMessageUtility::RemoveObserver( MVcxViewMessageObserver& aObserver )

    {

    MtvObserverUtils::RemoveObserver(iObservers, aObserver );       

    }

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

// Forwards messages to views

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

//

EXPORT_C void CVcxViewMessageUtility::SendCustomViewMessageL( 

        const TUid aMessageUid, const TDesC8 &aCustomMessage )

    {

    IPTVLOGSTRING2_LOW_LEVEL("CVcxViewMessageUtility::SendCustomViewMessageL Uid=%d", aMessageUid.iUid); 

    // Send the same message to all observers.

    TInt err( KErrNone );

    RUN_NOTIFY_LOOP_L( HandleCustomViewMessageL( aMessageUid, aCustomMessage ), iObservers, err );

    User::LeaveIfError( err );

    }