/*

* Copyright (c) 2004 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 Loudness proxy class

*

*/

// INCLUDE FILES

#ifdef _DEBUG

#include <e32svr.h>

#endif

#include "LoudnessProxy.h"

#include "LoudnessEventObserver.h"

#include <CustomInterfaceUtility.h>

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

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

// CLoudnessProxy::CLoudnessProxy

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

// might leave.

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

//

CLoudnessProxy::CLoudnessProxy(

	TMMFMessageDestinationPckg aMessageHandler,

	MCustomCommand& aCustomCommand,

	CCustomInterfaceUtility* aCustomInterfaceUtility )

	: 	iCustomCommand(&aCustomCommand),

		iMessageHandler(aMessageHandler),

		iCustomInterfaceUtility(aCustomInterfaceUtility)

    {

    }

// Destructor

CLoudnessProxy::~CLoudnessProxy()

    {

    // Remove the custom interface message handler before we destroy the proxy.

    if(iCustomInterfaceUtility)    

        iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);

	delete iLoudnessEventObserver;

	delete iCustomInterfaceUtility;

	}

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

// CLoudnessProxy::NewL

// Static function for creating an instance of the Loudness object.

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

//

EXPORT_C CLoudnessProxy* CLoudnessProxy::NewL(

	TMMFMessageDestinationPckg aMessageHandler,

    MCustomCommand& aCustomCommand,

    CCustomInterfaceUtility* aCustomInterfaceUtility )

    {

    CLoudnessProxy* self = new (ELeave) CLoudnessProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

	}

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

// CLoudnessProxy::ConstructL

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

//

void CLoudnessProxy::ConstructL()

    {

#ifdef _DEBUG

    RDebug::Print(_L("CLoudnessProxy::ConstructL"));

#endif

    iLoudnessEventObserver = CLoudnessEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);

    StartObserver();

    // sends a message to fetch initial data.

    TEfLoudnessDataPckg dataPckgFrom;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)ELefInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);

	SetEffectData(dataPckgFrom);

	}

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

// CLoudnessProxy::ApplyL

// Apply the Loudness settings.

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

//

EXPORT_C void CLoudnessProxy::ApplyL()

	{

#ifdef _DEBUG

    RDebug::Print(_L("CLoudnessProxy::Apply"));

#endif

	if ( !iHaveUpdateRights )

		{

		User::Leave(KErrAccessDenied);

		}

	iLoudnessData.iEnabled = iEnabled;

	iLoudnessData.iEnforced = iEnforced;

	iLoudnessData.iHaveUpdateRights = iHaveUpdateRights;

	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)ELefApply, DoEffectData(), KNullDesC8);

	}

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

// CLoudnessProxy::StartObserver

// Starts the event observer. The event observer monitors asynchronous events

// from the message handler.

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

//

void CLoudnessProxy::StartObserver()

	{

#ifdef _DEBUG

    RDebug::Print(_L("CLoudnessProxy::StartObserver"));

#endif

	iLoudnessEventObserver->Start();

	}

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

// CLoudnessProxy::LoudnessEvent

// Checks which data member has changed and notify the observers.

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

//

void CLoudnessProxy::LoudnessEvent(

	const TDesC8& aBuffer )

	{

#ifdef _DEBUG

    RDebug::Print(_L("CLoudnessProxy::LoudnessEvent"));

#endif

	TEfLoudnessDataPckg dataPckgFrom;

	dataPckgFrom.Copy(aBuffer);

	TEfLoudnessData newLoudnessData = dataPckgFrom();

	TUint8 event = 0;

		if ( newLoudnessData.iEnabled != iLoudnessData.iEnabled )

			{

			iLoudnessData.iEnabled = newLoudnessData.iEnabled;

			iEnabled = newLoudnessData.iEnabled;

			if ( iLoudnessData.iEnabled )

				{

				event = MAudioEffectObserver::KEnabled;

				}

			else

				{

				event = MAudioEffectObserver::KDisabled;

				}

			}

		else if ( newLoudnessData.iEnforced != iLoudnessData.iEnforced )

			{

			iLoudnessData.iEnforced = newLoudnessData.iEnforced;

			iEnforced = newLoudnessData.iEnforced;

			if ( iLoudnessData.iEnforced )

				{

				event = MAudioEffectObserver::KEnforced;

				}

			else

				{

				event = MAudioEffectObserver::KNotEnforced;

				}

			}

		else if ( newLoudnessData.iHaveUpdateRights != iLoudnessData.iHaveUpdateRights )

			{

			iLoudnessData.iHaveUpdateRights = newLoudnessData.iHaveUpdateRights;

			iHaveUpdateRights = newLoudnessData.iHaveUpdateRights;

			if ( iLoudnessData.iHaveUpdateRights )

				{

				event = MAudioEffectObserver::KGainedUpdateRights;

				}

			else

				{

				event = MAudioEffectObserver::KLostUpdateRights;

				}

			}

	if (!event)

		return;

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

		{

		iObservers[i]->EffectChanged(this, event);

		}

	}

// ========================== OTHER EXPORTED FUNCTIONS =========================

// End of File