usbengines/usbotgwatcher/src/cusbindicatornotifier.cpp
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/*
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 * Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
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 * All rights reserved.
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 * This component and the accompanying materials are made available
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 * under the terms of "Eclipse Public License v1.0"
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 * which accompanies this distribution, and is available
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 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
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 *
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 * Initial Contributors:
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 * Nokia Corporation - initial contribution.
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 *
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 * Contributors:
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 *
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 * Description:  Blink/show Usb indicator notifier implementation
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 *
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 */
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#include <usbuinotif.h>
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#include <hb/hbcore/hbindicatorsymbian.h>
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#include "cusbindicatornotifier.h"
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#include "cusbstate.h"
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#include "definitions.h"
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#include "debug.h"
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#include "panic.h"
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// ======== MEMBER FUNCTIONS ========
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// -----------------------------------------------------------------------------
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CUsbIndicatorNotifier* CUsbIndicatorNotifier::NewL(
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        CUsbNotifManager& aNotifManager, CUsbOtgWatcher& aOtgWatcher)
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    {
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    LOG_FUNC
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    CUsbIndicatorNotifier* self = new (ELeave) CUsbIndicatorNotifier(
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            aNotifManager, aOtgWatcher);
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// Destructor
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// ---------------------------------------------------------------------------
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//
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CUsbIndicatorNotifier::~CUsbIndicatorNotifier()
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    {
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    LOG_FUNC
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    Close();
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    if (iOtgWatcher.VBusObserver())
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        {
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        TRAP_IGNORE(iOtgWatcher.VBusObserver()->UnsubscribeL(*this));
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        }
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    // Unsubscribe from otg watcher states change notifications
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    TRAP_IGNORE(iOtgWatcher.UnsubscribeL(*this));
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    delete iUsbConnectingIndicator; 
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    }
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// ---------------------------------------------------------------------------
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// C++ constructor
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// ---------------------------------------------------------------------------
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//
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CUsbIndicatorNotifier::CUsbIndicatorNotifier(CUsbNotifManager& aNotifManager,
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        CUsbOtgWatcher& aOtgWatcher) :
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        iOtgWatcher(aOtgWatcher)
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    {
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    LOG_FUNC
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    }
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// ---------------------------------------------------------------------------
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// Second-phase constructor
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// ---------------------------------------------------------------------------
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//
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void CUsbIndicatorNotifier::ConstructL()
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    {
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    LOG_FUNC
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    iUsbConnectingIndicator = CHbIndicatorSymbian::NewL();
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    // Subscribe for VBus change notifications
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    iOtgWatcher.VBusObserver()->SubscribeL(*this);
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    // Subscribe for otg watcher states change notifications
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    iOtgWatcher.SubscribeL(*this);
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    iConnectingIndicatorOn = EFalse;
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    // check here for condition to set usb indicator
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    SetIndicator();
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    }
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// ---------------------------------------------------------------------------
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// From CUsbNotifier
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// ---------------------------------------------------------------------------
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//
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void CUsbIndicatorNotifier::Close()
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    {
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    LOG_FUNC
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    ToggleConnectingIndicator( EFalse );
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    }
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// ---------------------------------------------------------------------------
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// Set USB indicator On or Off
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// ---------------------------------------------------------------------------
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//
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void CUsbIndicatorNotifier::ToggleConnectingIndicator(TBool aEnable)
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    {
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    LOG1( "toggle connecting indicator = %d" , aEnable);
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    TBool success = ETrue;
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    if (aEnable && !iConnectingIndicatorOn)
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        {
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        success = iUsbConnectingIndicator->Activate(KUsbConnectingIndicator);   
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        LOG1( "calling CHbIndicatorSymbian::Activate(), returned %d", success);   
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        if (success)
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            {
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            iConnectingIndicatorOn = ETrue;
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            }  
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        }
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    if (!aEnable && iConnectingIndicatorOn)
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        {
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        success = iUsbConnectingIndicator->Deactivate(KUsbConnectingIndicator); 
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        if (success)
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            {
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            iConnectingIndicatorOn = EFalse;
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            }  
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        LOG1( "calling CHbIndicatorSymbian::Deactivate(), returned %d", success);                  
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        }   
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    // if success became false loading the indicator failed, log the error    
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    if (!success)
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        {
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        TInt error = iUsbConnectingIndicator->Error();
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        LOG1( "indicator error is %d", error);       
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        }         
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//
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void CUsbIndicatorNotifier::OtgWatcherStateChangedL(TUsbStateIds aState)
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    {
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     LOG_FUNC
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    SetIndicator();
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//
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void CUsbIndicatorNotifier::VBusDownL()
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    {
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     LOG_FUNC
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    SetIndicator();
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//
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void CUsbIndicatorNotifier::VBusUpL()
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    {
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     LOG_FUNC
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    SetIndicator();
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//  
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void CUsbIndicatorNotifier::VBusObserverErrorL(TInt aError)
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    {
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    LOG_FUNC
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    // do nothing
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    }
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// ---------------------------------------------------------------------------
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// 
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// ---------------------------------------------------------------------------
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//  
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void CUsbIndicatorNotifier::SetIndicator()
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    {
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    LOG_FUNC
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    if (!(iOtgWatcher.IsDeviceA()) || iOtgWatcher.CurrentHostState()->Id() == EUsbStateHostAPeripheral)
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        {
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        // if B or peripheral, than other party (usbwatcher) takes care of usb indicator
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        // in combined usbwatcher (if role swap allowed) one class has to manage usb indicator 
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        return;
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        }
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    // if VBus up and we are not host -> show connecting indicator
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    if ((iOtgWatcher.VBusObserver()->VBus() == CUsbVBusObserver::EVBusUp)
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            && (iOtgWatcher.CurrentHostState()->Id() != EUsbStateHostAHost))
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        {
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        ToggleConnectingIndicator( ETrue );
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        }
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    else
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    // Otherwise do not show indicator
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        {
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        ToggleConnectingIndicator( EFalse );
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        }
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    }
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0
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// End of file