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/*
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* Copyright (c) 2008 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: Observes OTG states
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*
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*/
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#ifndef C_USBOTGSTATEOBSERVER_H
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#define C_USBOTGSTATEOBSERVER_H
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#include <e32base.h>
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#include <e32property.h>
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#include <usbotgdefs.h>
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/**
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* Observer need to implement this interface to get OTG state change notifications
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*/
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NONSHARABLE_CLASS( MUsbOtgStateObserver)
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{
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public:
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/**
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* Local device is A, and get to Idle state
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*/
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virtual void AIdleL() = 0;
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/**
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* Local device is A, and get to Host state
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*/
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virtual void AHostL() = 0;
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/**
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* Local device is A, and get to Peripheral state
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*/
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virtual void APeripheralL() = 0;
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/**
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* Local device is A, and get VBus error
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*/
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virtual void AVBusErrorL() = 0;
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/**
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* Local device is B, and get to Idle state
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*/
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virtual void BIdleL() = 0;
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/**
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* Local device is B, and get to Peripheral state
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*/
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virtual void BPeripheralL() = 0;
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/**
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* Local device is B, and get to Host state
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*/
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virtual void BHostL() = 0;
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/**
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* Error handler
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* @param aError error code
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*/
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virtual void OtgStateErrorL(TInt aError) = 0;
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};
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/**
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* Class observes OTG State property
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*
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*/
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NONSHARABLE_CLASS( CUsbOtgStateObserver ) : public CActive
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{
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public:
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/**
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* Two-phased constructor.
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*/
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static CUsbOtgStateObserver* NewL();
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/**
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* Destructor.
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*/
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virtual ~CUsbOtgStateObserver();
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/**
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* Gets current OTG state
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* @return OTG state
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*/
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TUsbOtgState OtgState();
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/**
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* Subscribes for getting notifications
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* @param aObserver Observer
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*/
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void SubscribeL(MUsbOtgStateObserver& aObserver);
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/**
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* Unsubscribes from getting notifications
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* @param aObserver Observer
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*/
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void UnsubscribeL(MUsbOtgStateObserver& aObserver);
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private:
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// From CActive
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/**
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* Called when outstanding request completed
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*
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*/
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void RunL();
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/**
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* Called when outstanding request is cancelled
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*
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*/
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void DoCancel();
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/**
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* Called when RunL leaves
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*
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* @param errorcode
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* @return errorcode
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*/
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TInt RunError(TInt aError);
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private:
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/**
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* Default constructor
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*
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*/
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CUsbOtgStateObserver();
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/**
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* Second phase construction
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*
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*/
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void ConstructL();
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private:
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// data
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/**
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* The observer reports state changes to own observers
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* Not owns
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*/
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RPointerArray<MUsbOtgStateObserver> iObservers;
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/**
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* The observer observes property change
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*/
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RProperty iOtgState;
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};
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#endif // C_USBOTGSTATEOBSERVER_H
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