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/*
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* Copyright (c) 2006-2010 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: DUN USB plugin's listener
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*
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*/
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#ifndef C_CDUNUSBLISTEN_H
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#define C_CDUNUSBLISTEN_H
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#include <e32std.h>
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#include <c32comm.h>
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#include <usbman.h>
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#include "DunPlugin.h"
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/**
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* DUN USB plugin's listener class
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* This class starts listening for USB device state to change to configured.
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* When change to configured is detected, parent (CDunUsbPlugin) is notified
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* to create a channel. Also when device state is no longer configured,
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* parent (CDunUsbPlugin) is notified to remove a channel.
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*
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* @lib dunusb.lib
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* @since S60 v3.2
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*/
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NONSHARABLE_CLASS( CDunUsbListen ) : 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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* @param aServer Server
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* @param aParent Creator of this instance
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* @param aUsbServer USB server
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* @return Instance of self
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*/
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static CDunUsbListen* NewL( MDunServerCallback* aServer,
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MDunListenCallback* aParent,
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RUsb& aUsbServer );
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/**
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* Destructor.
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*/
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virtual ~CDunUsbListen();
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/**
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* Resets data to initial values
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*
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* @since S60 3.2
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* @return None
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*/
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void ResetData();
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/**
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* IssueRequest to USB server for device state change notifications
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*
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* @return KErrAlreadyExists if device state configured,
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* KErrNone otherwise
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*/
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TInt IssueRequestL();
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/**
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* Stops listening
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*
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* @since S60 3.2
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* @return None
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*/
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void Stop();
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private:
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CDunUsbListen( MDunServerCallback* aServer,
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MDunListenCallback* aParent,
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RUsb& aUsbServer );
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void ConstructL();
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/**
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* Initializes this class
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*
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* @since S60 3.2
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* @return None
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*/
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void Initialize();
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/**
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* Activates listening request
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*
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* @since S60 3.2
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* @return KErrNotReady if already active, KErrNone otherwise
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*/
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TInt Activate();
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// from base class CActive
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/**
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* From CActive.
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* Called when read or write operation is ready.
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*
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* @since S60 3.2
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* @return None
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*/
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void RunL();
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/**
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* From CActive.
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* Cancel current activity.
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*
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* @return None
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*/
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void DoCancel();
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private: // data
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/**
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* Callback to call when notification via MDunServerCallback to be made
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* Not own.
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*/
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MDunServerCallback* iServer;
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/**
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* Callback to call when notification via MDunListenCallback to be made
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* Not own.
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*/
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MDunListenCallback* iParent;
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/**
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* USB server (USB manager) needed for device state notifications
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* Device states needed to create transporter channel
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*/
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RUsb& iUsbServer;
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/**
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* Device state of USB set when RUsb::DeviceStateNotification completes
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*/
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TUsbDeviceState iDeviceState;
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/**
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* Previous state of USB set when RUsb::DeviceStateNotification completes
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*/
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TUsbDeviceState iDeviceStatePrev;
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};
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#endif // C_CDUNUSBLISTEN_H
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