/*

* Copyright (c) 2008-2008 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:  Monitors the file system for changes in a file.

*

*/

#include <mpxlog.h>

#include <mpxconstants.h>

#include "pnsmonitor.h"

#include "pnsmonitorobserver.h"

// RProperty key to identify the case when Music Player launching

// in the background

const TInt KMPXLaunchingOnBackground( 100 );

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

// Constructor

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

//

CPNSMonitor::CPNSMonitor( MPNSMonitorObserver& aObserver )

        : CActive( CActive::EPriorityLow ),

        iObserver( aObserver )

    {

    }

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

// Second Phase Constructor

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

//

void CPNSMonitor::ConstructL()

    {

    User::LeaveIfError( iPropertyHandler.Attach( KAppUidMusicPlayerX,

            KMPXLaunchingOnBackground ) );

    CActiveScheduler::Add( this );

    }

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

// Two-phased constructor

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

//

CPNSMonitor* CPNSMonitor::NewL( MPNSMonitorObserver& aObserver )

    {

    CPNSMonitor* self = new( ELeave ) CPNSMonitor( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor

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

//

CPNSMonitor::~CPNSMonitor()

    {

    Cancel();

    iPropertyHandler.Close();

    }

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

// Starts monitoring

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

//

void CPNSMonitor::Start()

    {

    MPX_DEBUG1("CPNSMonitor::Start <---");

    iPropertyHandler.Subscribe( iStatus );

    SetActive();

    MPX_DEBUG1("CPNSMonitor::Start --->");

    }

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

// RunL callback

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

//

void CPNSMonitor::RunL()

    {

    MPX_DEBUG1("CPNSMonitor::RunL <---");

    TInt ret( 0 );

    TInt err = RProperty::Get( KAppUidMusicPlayerX,

                KMPXLaunchingOnBackground,

                ret );

    if ( ret )

        {

        iObserver.OpeningMusicPlayer();

        MPX_DEBUG1("CPNSMonitor::RunL - Opening Music Player on the background");

        }

	// Listen again

    Start();

    MPX_DEBUG1("CPNSMonitor::RunL --->");

    }

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

// Handle Cancelling

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

//

void CPNSMonitor::DoCancel()

    {

    MPX_DEBUG1("CPNSMonitor::DoCancel <---");

    // Stop monitoring

    iPropertyHandler.Cancel();

    MPX_DEBUG1("CPNSMonitor::DoCancel --->");

    }

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

// Handles a leave occurring in the request completion event handler RunL()

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

//

TInt CPNSMonitor::RunError( TInt aError )

    {

    MPX_DEBUG2("CPNSMonitor::RunError(%d)", aError );

    // Listen again

    Start();

    return KErrNone;

    }