/*

 * 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