sl@0: /*
sl@0: * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). 
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:   Implementation of the active event observer.
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: // INCLUDE FILES
sl@0: #ifdef _DEBUG
sl@0: #include 	<e32svr.h>
sl@0: #endif
sl@0: 
sl@0: #include 	"BassBoostEventObserver.h"
sl@0: 
sl@0: 
sl@0: // ============================ MEMBER FUNCTIONS ===============================
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::CBassBoostEventObserver
sl@0: // C++ default constructor can NOT contain any code, that
sl@0: // might leave.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: CBassBoostEventObserver::CBassBoostEventObserver()
sl@0:     :   CActive(CActive::EPriorityStandard),
sl@0:     	iStopped(EFalse)
sl@0:     {
sl@0:     }
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::ConstructL
sl@0: // Symbian 2nd phase constructor can leave.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CBassBoostEventObserver::ConstructL(
sl@0: 	TMMFMessageDestinationPckg aMessageHandler,
sl@0: 	MCustomCommand& aCustomCommand,
sl@0: 	MBassBoostCallback& aCallback )
sl@0:     {
sl@0:     CActiveScheduler::Add(this);
sl@0: 	iMessageHandler = aMessageHandler;
sl@0: 	iCustomCommand = &aCustomCommand;
sl@0: 	iCallback = &aCallback;
sl@0: 	}
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::NewL
sl@0: // Two-phased constructor.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: CBassBoostEventObserver* CBassBoostEventObserver::NewL(
sl@0: 	TMMFMessageDestinationPckg aMessageHandler,
sl@0: 	MCustomCommand& aCustomCommand,
sl@0: 	MBassBoostCallback& aCallback )
sl@0:     {
sl@0:     CBassBoostEventObserver* self = new(ELeave) CBassBoostEventObserver();
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL(aMessageHandler, aCustomCommand, aCallback);
sl@0:     CleanupStack::Pop(self);
sl@0:     return self;
sl@0:     }
sl@0: 
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::~CBassBoostEventObserver
sl@0: // Destructor
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: CBassBoostEventObserver::~CBassBoostEventObserver()
sl@0:     {
sl@0:     // We should not have to cancel the outstanding request because the message
sl@0:     // handler will complete our request with KErrCancel in its destructor.
sl@0:     Cancel();
sl@0:     }
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::Start
sl@0: // Kickoff the event observer by issuing the first observation message.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CBassBoostEventObserver::Start()
sl@0:     {
sl@0: 	if( !iStopped && !IsActive() )
sl@0: 		{
sl@0:     	iCustomCommand->CustomCommandAsync(iMessageHandler, (TInt)EBfObserve, KNullDesC8, KNullDesC8, iDataPckgFrom, iStatus);
sl@0:     	iStopped = EFalse;
sl@0:     	SetActive();
sl@0: 		}
sl@0:     }
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::Stop
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CBassBoostEventObserver::Stop()
sl@0:     {
sl@0: 	iStopped = ETrue;
sl@0:     }
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::RunL
sl@0: // Invoke by the active scheduler when a request completes, In this case, our
sl@0: // observation message has completed.
sl@0: // The proxy is notified. Afterwards, reissue the request to continue observation.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CBassBoostEventObserver::RunL()
sl@0:     {
sl@0: #ifdef _DEBUG
sl@0:     RDebug::Print(_L("CBassBoostEventObserver::RunL()\n"));
sl@0: #endif
sl@0: 
sl@0: 	if( iStatus == KErrNone )
sl@0: 		{
sl@0: 		iCallback->BassBoostEvent(iDataPckgFrom);
sl@0: 		Start();
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		iStopped = ETrue;
sl@0: 		}
sl@0:     }
sl@0: 
sl@0: // -----------------------------------------------------------------------------
sl@0: // CBassBoostEventObserver::DoCancel
sl@0: // Cancels the current and any on going requests/tasks.
sl@0: // -----------------------------------------------------------------------------
sl@0: //
sl@0: void CBassBoostEventObserver::DoCancel()
sl@0:     {
sl@0: #ifdef _DEBUG
sl@0:     RDebug::Print(_L("CBassBoostEventObserver::DoCancel()\n"));
sl@0: #endif
sl@0:     iStopped = ETrue;
sl@0:     }
sl@0: 
sl@0: // End of file
sl@0: