/*

* 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 "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:  Accessory observer implementation for fmtx watcher plugin.

*

*/

// INCLUDE FILES

#include <accessoryservicesinternalpskeys.h>

#include "hwrmfmtxaccobserver.h"

#include "trace.h"

// ============================ LOCAL FUNCTIONS ===============================

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

// AccessoryConnected()

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

//

static TBool AccessoryConnected( TInt aWiredConnStatus )

    {

    TBool wiredConnected( ETrue );

    if( aWiredConnStatus == EAccSrvcsWiredConnUninitialized ||

        aWiredConnStatus == EAccSrvcsWiredConnDisconnected )

        {

        wiredConnected = EFalse;

        }

    return wiredConnected;

    }

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

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

// CHWRMFmtxAccObserver::NewL()

// Two-phased constructor.

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

//

CHWRMFmtxAccObserver* CHWRMFmtxAccObserver::NewL( MHWRMFmtxConnObserverCallback& aCallback )

    {

    FUNC_LOG;

    CHWRMFmtxAccObserver* self = new( ELeave ) CHWRMFmtxAccObserver( aCallback );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CHWRMFmtxAccObserver::~CHWRMFmtxAccObserver()

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

//

CHWRMFmtxAccObserver::~CHWRMFmtxAccObserver()

    {

    FUNC_LOG;

    iProperty.Cancel();

    Cancel();

    iProperty.Close();

    }    

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

// CHWRMFmtxAccObserver::StartObservingL

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

//

TBool CHWRMFmtxAccObserver::GetStatusL()

    {

    FUNC_LOG;

    TInt wiredConnStatus( EAccSrvcsWiredConnUninitialized );        

    TInt err( iProperty.Get( KPSUidAccessoryServices,

                             KAccSrvcsWiredConnection,

                             wiredConnStatus ) ); 

    LOG_IF_ERROR1( err, "CHWRMFmtxAccObserver::GetStatusL: err=%d", err );

    User::LeaveIfError( err );

    return AccessoryConnected( wiredConnStatus );

    }

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

// CHWRMFmtxAccObserver::StartObservingL

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

//

void CHWRMFmtxAccObserver::StartObservingL()

    {

    FUNC_LOG;

    if( IsActive() )

        {

        ERROR_LOG( "CHWRMFmtxAccObserver::StartObservingL: already active" );

        }

    else

        {

        OrderAccessoryNotification();

        iConnected = GetStatusL(); // only connection change will be notified

        }        

    }

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

// CHWRMFmtxAccObserver::StopObserving

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

//

void CHWRMFmtxAccObserver::StopObserving()

    {

    FUNC_LOG;

    Cancel();

    }

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

// CHWRMFmtxAccObserver::CHWRMFmtxAccObserver()

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

//

CHWRMFmtxAccObserver::CHWRMFmtxAccObserver( MHWRMFmtxConnObserverCallback& aCallback ) :

    CActive( EPriorityStandard ),

    iCallback( aCallback )

    {

    FUNC_LOG;

    CActiveScheduler::Add( this );

    }

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

// CHWRMFmtxAccObserver::ConstructL

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

//

void CHWRMFmtxAccObserver::ConstructL()

    {

    FUNC_LOG;

    // Connect to accessory server

    TInt err = iProperty.Attach( KPSUidAccessoryServices, KAccSrvcsWiredConnection );

    LOG_IF_ERROR1( err, "CHWRMFmtxAccObserver::ConstructL: RProperty::Attach err=%d", err );

    User::LeaveIfError( err );

    }

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

// CHWRMFmtxAccObserver::OrderAccessoryNotification()

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

//

void CHWRMFmtxAccObserver::OrderAccessoryNotification()

    {

    FUNC_LOG;

    iProperty.Subscribe( iStatus );

    SetActive();

    }

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

// CHWRMFmtxAccObserver::RunL()

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

//

void CHWRMFmtxAccObserver::RunL()

    {

    FUNC_LOG;

    TInt status( iStatus.Int() );

    LOG_IF_ERROR1( status, "CHWRMFmtxAccObserver::RunL: error, status=%d", status );

    // prevent looping due to immediate completion

    if ( status != KErrCancel )

        {

        OrderAccessoryNotification();    

        }

    TInt wiredConnStatus( EAccSrvcsWiredConnUninitialized );

    TInt err = iProperty.Get( wiredConnStatus );

    TBool connected( AccessoryConnected( wiredConnStatus ) );

    INFO_LOG2( "CHWRMFmtxAccObserver::RunL: err=%d, wiredConnStatus=%d", err, wiredConnStatus );

    if ( err == KErrNotFound || err == KErrNone )

        {

        INFO_LOG2( "CHWRMFmtxAccObserver::RunL: connected=%d, iConnected=%d", connected, iConnected );

        if ( connected != iConnected )

            {

            iCallback.HandleConnectionChange( EFmtxWatcherObserverAccessory, connected );    

            iConnected = connected; // store the status to be used on next completion    

            }

        }

    }

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

// CHWRMFmtxAccObserver::DoCancel

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

//

void CHWRMFmtxAccObserver::DoCancel()

    {

    FUNC_LOG;

    iProperty.Cancel();

    }

//  End of File