/*

* Copyright (c) 2008-2009 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

 *

*/

#include <usbotgdefs.h>

#include "cusbidpinobserver.h"

#include "definitions.h"

#include "debug.h"

#include "panic.h"

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// 

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//

CUsbIdPinObserver::CUsbIdPinObserver() :

    CActive(EPriorityStandard)

    {

    CActiveScheduler::Add(this);

    }

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// 

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

//

void CUsbIdPinObserver::ConstructL()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::ConstructL" ) );

    User::LeaveIfError(iIdPin.Attach(KUidUsbManCategory,

            KUsbOtgIdPinPresentProperty));

    }

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// 

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//

CUsbIdPinObserver* CUsbIdPinObserver::NewL()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::NewL" ) );

    CUsbIdPinObserver* self = new (ELeave) CUsbIdPinObserver();

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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// 

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//

CUsbIdPinObserver::~CUsbIdPinObserver()

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::~CUsbIdPinObserver" ) );

    Cancel();

    iIdPin.Close();

    iObservers.Close();

    }

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// 

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//

CUsbIdPinObserver::TState CUsbIdPinObserver::IdPin()

/* this getter is not const, because for some reason RProperty::Get is not const */

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::IdPin" ) );

    TInt val(0);

    TInt err = iIdPin.Get(val);

    if (KErrNone != err)

        {

            FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::IdPin CanNotGetIdPinProperty" ) );

        Panic(ECanNotGetIdPinProperty);

        }

        FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbIdPinObserver::IdPin = %d" ), val ));

    // not found in docs clear definition of this property. Verification is needed   

    return (0 == val ? EIdPinOff : EIdPinOn);

    }

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// 

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

//   

void CUsbIdPinObserver::SubscribeL(MUsbIdPinObserver* aObserver)

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::SubscribeL" ) );

    User::LeaveIfError(iObservers.Append(aObserver));

    if (KFirst == iObservers.Count()) // first item

        {

        iIdPin.Subscribe(iStatus);

        SetActive();

        }

    }

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// 

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//

void CUsbIdPinObserver::UnsubscribeL(MUsbIdPinObserver* aObserver)

    {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::UnsubscribeL" ) );

    if (0 == iObservers.Count()) // no items

        {

        FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::UnsubscribeL No observers" ) );

        return;

        }

    TInt i(0);

    while (i < iObservers.Count() && aObserver != iObservers[i])

        ++i;

    if (aObserver == iObservers[i]) // found

        {

        iObservers.Remove(i);

        }

    else

        {

            FLOG( _L( "[USBOTGWATCHER]\tCUsbIdPinObserver::UnsubscribeL CanNotGetIdPinObserver" ) );

        Panic(ECanNotFindIdPinObserver);

        }

    if (0 == iObservers.Count()) // no items

        {

        // cancel pending request

        Cancel();

        }

    }

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

//

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

//

void CUsbIdPinObserver::RunL()

    {

        FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbIdPinObserver::RunL iStatus = %d" ), iStatus.Int()));

        // if error occured, tell to Observers

        if(KErrNone != iStatus.Int()) 

            {

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

                 {

                 iObservers[i]->IdPinErrorL(iStatus.Int());

                 }

            return;

            }

    // re-issue request first

    iIdPin.Subscribe(iStatus);

    SetActive();

    // then process property change

    TState state(IdPin());

    // report change   

    switch (state)

        {

        case EIdPinOn:

            {

                FLOG(_L( "[USBOTGWATCHER]\tCUsbIdPinObserver::RunL IdPin ON"));

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

                {

                iObservers[i]->IdPinOnL();

                }

            break;

            }

            ;

        case EIdPinOff:

            {

                FLOG(_L( "[USBOTGWATCHER]\tCUsbIdPinObserver::RunL IdPin OFF"));

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

                {

                iObservers[i]->IdPinOffL();

                }

            break;

            }

            ;

        default:

            {

                FLOG(_L( "[USBOTGWATCHER]\tCUsbIdPinObserver::RunL WrongIdPinState"));

            Panic(EWrongIdPinState);

            }

        }

    }

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// 

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//

void CUsbIdPinObserver::DoCancel()

    {

    iIdPin.Cancel();

    }

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// 

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

//

TInt CUsbIdPinObserver::RunError(TInt aError)

    {

        FTRACE( FPrint(_L( "[USBOTGWATCHER]\tCUsbIdPinObserver::RunError aError = %d" ), aError));

    // try to continue	

    return KErrNone;

    }