/*

 *

#include <usbotgdefs.h>

#include "cusbvbusobserver.h"

#include "definitions.h"

#include "debug.h"

#include "panic.h"

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// 

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CUsbVBusObserver::CUsbVBusObserver() :

    CActive(EPriorityStandard)

    {

    CActiveScheduler::Add(this);

    }

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// 

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void CUsbVBusObserver::ConstructL()

    {

    User::LeaveIfError(iVBus.Attach(KUidUsbManCategory,

            KUsbOtgVBusPoweredProperty));

    }

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// 

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CUsbVBusObserver* CUsbVBusObserver::NewL()

    {

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

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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// 

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CUsbVBusObserver::~CUsbVBusObserver()

    {

    Cancel();

    iVBus.Close();

    iObservers.Close();

    }

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CUsbVBusObserver::TState CUsbVBusObserver::VBus() /* not const, because for some reason RProperty::Get is not const */

    {

    TInt val(0);

    TInt err = iVBus.Get(val);

    if (KErrNone != err)

        {

        }

    return (0 == val ? EVBusDown : EVBusUp);

    }

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// 

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void CUsbVBusObserver::SubscribeL(MUsbVBusObserver& aObserver)

    {

    // check if the same observer already exist in a list

        {

        return;

        }

    iObservers.AppendL(&aObserver);

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

        {

        iVBus.Subscribe(iStatus);

        SetActive();

        }

    }

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void CUsbVBusObserver::UnsubscribeL(MUsbVBusObserver& aObserver)

    {

    TInt i(iObservers.Find(&aObserver));

        {

        return;

        }

    iObservers.Remove(i);

    if (0 == iObservers.Count()) // no observers anymore

        {

        // cancel pending request, if any

        Cancel();

        }

    }

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void CUsbVBusObserver::RunL()

    {

            {

            }

    // re-issue request first

    iVBus.Subscribe(iStatus);

    SetActive();

    // then process property change

    TState state(VBus());

    // report change   

    switch (state)

        {

        case EVBusUp:

            {

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

                {

                iObservers[i]->VBusUpL();

                }

            break;

            }

            ;

        case EVBusDown:

            {

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

                {

                iObservers[i]->VBusDownL();

                }

            break;

            }

            ;

        default:

            {

            }

        }

    }

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void CUsbVBusObserver::DoCancel()

    {

    iVBus.Cancel();

    }

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TInt CUsbVBusObserver::RunError(TInt aError)

    {

    // try to continue	

    return KErrNone;

    }