usbengines/usbdevcon/inc/cusbstatewatcher.h
author Fionntina Carville <fionntinac@symbian.org>
Mon, 15 Nov 2010 13:37:26 +0000
branchRCL_3
changeset 95 55a3258355ea
parent 0 1e05558e2206
permissions -rw-r--r--
Bug 3539. Update localisation mappings for usbservices.
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/*
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* Copyright (c) 2007 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:  Watches USB states
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*
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*/
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#ifndef CUSBSTATEWATCHER_H
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#define CUSBSTATEWATCHER_H
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#include <e32std.h>
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#include <d32usbc.h>
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#include "cusbdevcon.h"
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/**
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 *  Usb State watcher
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 *  Reports Usb state changes to CUsbDevCon
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 *
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 *  @lib usbdevcon.lib
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 *  @since S60 v.5.0 
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 */
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class CUsbStateWatcher : 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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     * @since S60 v.5.0
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     * @param aObserver Gets notifications when USB state changed
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     * @param aLdd Link to LDD services
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     * @return Constructed instance
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     */ 
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    static CUsbStateWatcher* NewL(CUsbDevCon& aObserver, RDevUsbcClient& aLdd);
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    /**
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    * Destructor.
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    *
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    * @since S60 v.5.0
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    */
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    virtual ~CUsbStateWatcher();
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    /**
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     * Activates USB states watching
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     *
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     * @since S60 v.5.0
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     */
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    void Activate();
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private:
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    /**
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     * Default construction
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     *
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     * @since S60 v.5.0
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     * @param aObserver Gets notifications when USB state changed
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     * @param aLdd Link to LDD services
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     */
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    CUsbStateWatcher(CUsbDevCon& aObserver, RDevUsbcClient& aLdd);
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    /**
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     * Two-phased constructor.
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     *
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     * @since S60 v.5.0
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     */
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    void ConstructL();
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    // from CActive
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    /**
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     * From CActive.
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     *
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     */
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    void RunL();
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    /**
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     * From CActive.
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     *
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     */ 
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    void DoCancel();
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     /**
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     * From CActive.
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     *
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     */ 
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     TInt RunError( TInt /*aError*/ );
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private: // data
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    /**
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     * Device state
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     */
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    TUint iState;
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    /**
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     * Observer
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     * Not own.  
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     */
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    CUsbDevCon& iObserver;
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    /**
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     * LDD
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     * Not own.  
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     */
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    RDevUsbcClient& iLdd;
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    };
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#endif // CUSBSTATEWATCHER_H