/*

 * Copyright (c) 2009-2010 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:  Blink/show Usb indicator notifier implementation

 *

 */

#include <usbuinotif.h>

#include <hb/hbcore/hbindicatorsymbian.h>

#include "cusbindicatornotifier.h"

#include "cusbstate.h"

#include "definitions.h"

#include "debug.h"

#include "panic.h"

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

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

// Two-phased constructor.

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

//

CUsbIndicatorNotifier* CUsbIndicatorNotifier::NewL(

        CUsbNotifManager& aNotifManager, CUsbOtgWatcher& aOtgWatcher)

    {

    LOG_FUNC

    CUsbIndicatorNotifier* self = new (ELeave) CUsbIndicatorNotifier(

            aNotifManager, aOtgWatcher);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// Destructor

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

//

CUsbIndicatorNotifier::~CUsbIndicatorNotifier()

    {

    LOG_FUNC

    Close();

    if (iOtgWatcher.VBusObserver())

        {

        TRAP_IGNORE(iOtgWatcher.VBusObserver()->UnsubscribeL(*this));

        }

    // Unsubscribe from otg watcher states change notifications

    TRAP_IGNORE(iOtgWatcher.UnsubscribeL(*this));

    delete iUsbConnectingIndicator; 

    }

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

// C++ constructor

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

//

CUsbIndicatorNotifier::CUsbIndicatorNotifier(CUsbNotifManager& aNotifManager,

        CUsbOtgWatcher& aOtgWatcher) :

    CUsbNotifier(aNotifManager, KUsbUiNotifOtgIndicator, NULL), iOtgWatcher(

            aOtgWatcher)

    {

    LOG_FUNC

    }

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

// Second-phase constructor

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

//

void CUsbIndicatorNotifier::ConstructL()

    {

    LOG_FUNC

    iUsbConnectingIndicator = CHbIndicatorSymbian::NewL();

    // Subscribe for VBus change notifications

    iOtgWatcher.VBusObserver()->SubscribeL(*this);

    // Subscribe for otg watcher states change notifications

    iOtgWatcher.SubscribeL(*this);

    // check here for condition to set usb indicator

    SetIndicator();

    }

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

// Show/hide static icon of the indicator. 

// If the indicator is blinking, stop blinking it and show/hide the static 

// form of the indicator.

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

//

void CUsbIndicatorNotifier::ShowStatic(TBool aVisible)

    {

    LOG_FUNC

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

    SetIndicatorState(aVisible

                                ? EIndicatorStateOn

                                   : EIndicatorStateOff);

    }

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

// 

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

//

void CUsbIndicatorNotifier::Blink()

    {

    LOG_FUNC

    SetIndicatorState( EIndicatorConnecting );

    }

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

// From base class CUsbNotifier

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

//

void CUsbIndicatorNotifier::ShowL()

    {

    LOG_FUNC

    ShowStatic(ETrue);

    }

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

// From CUsbNotifier

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

//

void CUsbIndicatorNotifier::Close()

    {

    LOG_FUNC

    ShowStatic(EFalse);

    }

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

// Set USB indicator On or Off

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

//

void CUsbIndicatorNotifier::SetIndicatorState(const TInt aState)

    {

    LOG1( "USB indicator State = %d" , aState);

    TBool success = ETrue;

    if ((aState == EIndicatorConnecting) && !iConnectingIndicatorOn)

        {

        success = iUsbConnectingIndicator->Activate(KUsbConnectingIndicator);   

        LOG1( "calling CHbIndicatorSymbian::Activate(), returned %d", success);   

        if (success)

            {

            iConnectingIndicatorOn = ETrue;

            }  

        }

    if ((aState != EIndicatorConnecting) && iConnectingIndicatorOn)

        {

        success = iUsbConnectingIndicator->Deactivate(KUsbConnectingIndicator); 

        if (success)

            {

            iConnectingIndicatorOn = EFalse;

            }  

        LOG1( "calling CHbIndicatorSymbian::Deactivate(), returned %d", success);                  

        }   

    // if success became false loading the indicator failed, log the error    

    if (!success)

        {

        TInt error = iUsbConnectingIndicator->Error();

        LOG1( "indicator error is %d", error);       

        }         

    }

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

// 

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

//

void CUsbIndicatorNotifier::OtgWatcherStateChangedL(TUsbStateIds aState)

    {

    SetIndicator();

    }

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

// 

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

//

void CUsbIndicatorNotifier::VBusDownL()

    {

    SetIndicator();

    }

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

// 

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

//

void CUsbIndicatorNotifier::VBusUpL()

    {

    SetIndicator();

    }

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

// 

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

//  

void CUsbIndicatorNotifier::VBusObserverErrorL(TInt aError)

    {

    // do nothing

    }

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

// 

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

//  

void CUsbIndicatorNotifier::SetIndicator()

    {

    if (!(iOtgWatcher.IsDeviceA()) || iOtgWatcher.CurrentHostState()->Id() == EUsbStateHostAPeripheral)

        {

        // if B or peripheral, than other party (usbwatcher) takes care of usb indicator

        // in combined usbwatcher (if role swap allowed) one class has to manage usb indicator 

        return;

        }

    // if VBus Up and we are host -> show indicator

    if ((iOtgWatcher.VBusObserver()->VBus() == CUsbVBusObserver::EVBusUp)

            && (iOtgWatcher.CurrentHostState()->Id() == EUsbStateHostAHost))

        {

        ShowStatic(ETrue);

        }

    // if VBus up and we are not host -> Blink indicator

    else if ((iOtgWatcher.VBusObserver()->VBus() == CUsbVBusObserver::EVBusUp)

            && (iOtgWatcher.CurrentHostState()->Id() != EUsbStateHostAHost))

        {

        Blink();

        }

    else

    // Otherwise do not show indicator

        {

        ShowStatic(EFalse);

        }

    }

// End of file