/*

 * 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:  Implementation

 *

 */

#include <usbman.h>

#include "cusbhosteventnotificationobserver.h"

#include "definitions.h"

#include "debug.h"

#include "panic.h"

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

// 

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

//

CUsbHostEventNotificationObserver::CUsbHostEventNotificationObserver(

        RUsb* aUsb) :

    CActive(EPriorityStandard), iUsb(aUsb)

    {

    CActiveScheduler::Add(this);

    }

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

// 

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

//

void CUsbHostEventNotificationObserver::ConstructL()

    {

    LOG_FUNC

    }

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

// 

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

//

CUsbHostEventNotificationObserver* CUsbHostEventNotificationObserver::NewL(

        RUsb* aUsb)

    {

    LOG_FUNC

    CUsbHostEventNotificationObserver* self =

            new (ELeave) CUsbHostEventNotificationObserver(aUsb);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// 

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

//

CUsbHostEventNotificationObserver::~CUsbHostEventNotificationObserver()

    {

    LOG_FUNC

    Cancel();

    iObservers.Close();

    }

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

// 

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

//

void CUsbHostEventNotificationObserver::SubscribeL(

        MUsbHostEventNotificationObserver& aObserver)

    {

    LOG_FUNC

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

    if (KErrNotFound != iObservers.Find(&aObserver))

        {

        LOG("Observer already exists" );

        PANIC( EObserverAlreadyExists);

        return;

        }

    iObservers.AppendL(&aObserver);

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

        {

        iUsb->HostEventNotification(iStatus, iEventInfo);

        SetActive();

        }

    }

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

// 

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

//

void CUsbHostEventNotificationObserver::UnsubscribeL(

        MUsbHostEventNotificationObserver& aObserver)

    {

    LOG_FUNC

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

    if (KErrNotFound == i)

        {

        LOG("Observer not found");

        PANIC( ECanNotFindHostEventNotificationObserver);

        return;

        }

    iObservers.Remove(i);

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

        {

        // cancel pending request

        Cancel();

        }

    }

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

//

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

//

void CUsbHostEventNotificationObserver::RunL()

    {

    LOG_FUNC

    LOG1( "iStatus = %d", iStatus.Int());

    // if error occured, tell to Observers

    if (KErrNone != iStatus.Int())

        {

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

            {

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

            }

        return;

        }

    TDeviceEventInformation dei(iEventInfo);

    // re-issue request first

    iUsb->HostEventNotification(iStatus, iEventInfo);

    SetActive();

    // Log the event

    LOG1( "iEventInfo.iDeviceId         = %d" , dei.iDeviceId);

    LOG1( "iEventInfo.iEventType        = %d" , dei.iEventType);

    LOG1( "iEventInfo.iError            = %d" , dei.iError);

    LOG1( "iEventInfo.iDriverLoadStatus = %d" , dei.iDriverLoadStatus);

    LOG1( "iEventInfo.iVid              = %d" , dei.iVid);

    LOG1( "iEventInfo.iPid              = %d" , dei.iPid);

    // then process property change

    switch (dei.iEventType)

        {

        case EDeviceAttachment:

            {

            LOG("DeviceAttachment" );

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

                {

                iObservers[i]->DeviceAttachedL(dei);

                }

            break;

            }

        case EDeviceDetachment:

            {

            LOG( "DeviceDetachment" );

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

                {

                iObservers[i]->DeviceDetachedL(dei);

                }

            break;

            }

        case EDriverLoad:

            {

            switch (dei.iDriverLoadStatus)

                {

                case EDriverLoadSuccess:

                    {

                    LOG( "DriverLoadSuccess" );

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

                        {

                        iObservers[i]->DriverLoadSuccessL(dei);

                        }

                    break;

                    }

                case EDriverLoadPartialSuccess:

                    {

                    LOG( "DriverLoadPartialSuccess" );

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

                        {

                        iObservers[i]->DriverLoadPartialSuccessL(dei);

                        }

                    break;

                    }

                case EDriverLoadFailure:

                    {

                    LOG( "DriverLoadFailure");

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

                        {

                        iObservers[i]->DriverLoadFailureL(dei);

                        }

                    break;

                    }

                default:

                    {

                    LOG("WrongDriverLoadStatus" );

                    PANIC( EWrongDriverLoadStatus);

                    }

                }

            break;

            }

        default:

            {

            LOG( "WrongHostEventNotification" );

            PANIC( EWrongHostEventNotification);

            }

        }

    }

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

// 

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

//

void CUsbHostEventNotificationObserver::DoCancel()

    {

    iUsb->HostEventNotificationCancel();

    }

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

// 

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

//

TInt CUsbHostEventNotificationObserver::RunError(TInt aError)

    {

    LOG_FUNC

    LOG1( "aError = %d" , aError);

    // try to recover and continue	

    return KErrNone;

    }