/*

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

 *

 */

#include <AknSmallIndicator.h>

#include <avkon.hrh>

#include <usbuinotif.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();

    delete iIconBlinkingTimer;

    if (iOtgWatcher.VBusObserver())

        {

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

        }

    // Unsubscribe from otg watcher states change notifications

    TRAP_IGNORE(iOtgWatcher.UnsubscribeL(*this));

    }

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

// C++ constructor

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

//

CUsbIndicatorNotifier::CUsbIndicatorNotifier(CUsbNotifManager& aNotifManager,

        CUsbOtgWatcher& aOtgWatcher) :

    CUsbNotifier(aNotifManager, KUsbUiNotifOtgIndicator, NULL), iOtgWatcher(

            aOtgWatcher)

    {

    LOG_FUNC

    //To be changed to EAknIndicatorStateAnimate and remove iIconBlinkingTimer

    //when AVKON implements animation form of usb indicator.

    iIndicatorState = EAknIndicatorStateOn;

    }

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

// Second-phase constructor

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

//

void CUsbIndicatorNotifier::ConstructL()

    {

    LOG_FUNC

    // Subscribe for VBus change notifications

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

    // Subscribe for otg watcher states change notifications

    iOtgWatcher.SubscribeL(*this);

    iIconBlinkingTimer = CUsbTimer::NewL(*this, EIconBlinkingTimer);

    // check here for condition to set usb indicator

    SetIndicatorL();

    }

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

// 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::ShowStaticL(TBool aVisible)

    {

    LOG_FUNC

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

    iIconBlinkingTimer->Cancel();

    SetIndicatorStateL(aVisible

                                ? EAknIndicatorStateOn

                                   : EAknIndicatorStateOff);

    }

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

// 

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

//

void CUsbIndicatorNotifier::BlinkL()

    {

    LOG_FUNC

    // Will be canceled if active in After()

    iIconBlinkingTimer->After(0);

    }

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

// From base class CUsbNotifier

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

//

void CUsbIndicatorNotifier::ShowL()

    {

    LOG_FUNC

    ShowStaticL(ETrue);

    }

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

// From CUsbNotifier

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

//

void CUsbIndicatorNotifier::Close()

    {

    LOG_FUNC

    iIconBlinkingTimer->Cancel();

    TRAP_IGNORE( ShowStaticL(EFalse) );

    }

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

// From MUsbTimerObserver

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

// 

void CUsbIndicatorNotifier::TimerElapsedL(TUsbTimerId aTimerId)

    {

    switch (aTimerId)

        {

        case EIconBlinkingTimer:

            {

            SetIndicatorStateL(iIndicatorState

                                               ? EAknIndicatorStateOn

                                                  : EAknIndicatorStateOff);

            iIndicatorState

                    = (iIndicatorState == EAknIndicatorStateOn

                                                               ? EAknIndicatorStateOff

                                                                  : EAknIndicatorStateOn);

            // Will be canceled if active in After()

            iIconBlinkingTimer->After(KUsbIndicatorBlinkingInterval);

            break;

            }

        default:

            {

            LOG1("Unknown timer id = %d", aTimerId)

            }

        }

    }

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

// Set USB indicator On or Off

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

//

void CUsbIndicatorNotifier::SetIndicatorStateL(const TInt aState)

    {

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

    CAknSmallIndicator* indicator = CAknSmallIndicator::NewLC(TUid::Uid(

            EAknIndicatorUSBConnection));

    indicator->SetIndicatorStateL(aState);

    CleanupStack::PopAndDestroy(indicator); //indicator    

    }

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

// 

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

//

void CUsbIndicatorNotifier::OtgWatcherStateChangedL(TUsbStateIds aState)

    {

    SetIndicatorL();

    }

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

// 

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

//

void CUsbIndicatorNotifier::VBusDownL()

    {

    SetIndicatorL();

    }

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

// 

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

//

void CUsbIndicatorNotifier::VBusUpL()

    {

    SetIndicatorL();

    }

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

// 

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

//  

void CUsbIndicatorNotifier::VBusObserverErrorL(TInt aError)

    {

    // do nothing

    }

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

// 

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

//  

void CUsbIndicatorNotifier::SetIndicatorL()

    {

        {

        // 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))

        {

        ShowStaticL(ETrue);

        }

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

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

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

        {

        BlinkL();

        }

    else

    // Otherwise do not show indicator

        {

        ShowStaticL(EFalse);

        }

    }

// End of file