/*

* Copyright (c) 2008 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:  Base classes for Usb notifier wrapper  

 *

*/

#ifndef C_CUSBNOTENOTIFIER_H

#define C_CUSBNOTENOTIFIER_H

#include <e32base.h>

#include "cusbnotifier.h"

class CUsbNotifManager;

class RNotifier;

/**

 * Base class of wrapper for showing RNotifier note.

 * Class implements showing note notifier by RNotifier API in asynchronized way 

 * which doesn't block the caller. When user gives some feedback on the note, 

 * the event will be forwarded to CUsbNotifManager and it does some handling.

 */

NONSHARABLE_CLASS( CUsbNoteNotifier) : public CUsbNotifier

    {

    /**

     * Active object of asynchronous showing notifier 

     */

    class CNotifierActive : public CActive

        {

        public:

            /**

             * Default constructor

             * @param aNotifier RNotifier API

             * @param aUsbNoteNotifier the note notifier container

             */

            CNotifierActive(RNotifier& aNotifier, CUsbNoteNotifier* aUsbNoteNotifier);

            /**

             * Destructor

             */

            virtual ~CNotifierActive();

            /**

             * Start to show the notifier

             */

            void StartL();

        protected:

            // From base class CActive

            /**

             * Caled when outstanding request completed

             */

            void RunL();

            /**

             * Called when outstanding request cancelled

             */

            void DoCancel();

            /**

             * Called when RunL leaves   

             * @param aError errorcode

             * @return errorcode 

             */

            TInt RunError(TInt aError);

        private:

            // data

            /**

             * The note notifier container 

             * Not Own 

             */

            CUsbNoteNotifier* iUsbNoteNotifier;

            /**

             * RNotifier API

             * Not Own 

             */

            RNotifier& iNotifier;

            /**

             * Response from notifier 

             */

            TPckg<TInt> iRes;

        };

public:

    /**

     * Destructor

     */

    virtual ~CUsbNoteNotifier();

    //From base class CUsbNotifier

    /**

     * Start to show notifier

     */

    virtual void ShowL();

    /**

     * Stop showing notifier

     */

    virtual void Close();

protected:

    /**

     * Default constructor

     * @param aNotifier RNotifier API

     * @param aNotifManager Manager

     * @param acat Category

     * @param aNotidId id 

     */

    CUsbNoteNotifier(RNotifier& aNotifier, CUsbNotifManager* aNotifManager,

            TUid aCat, TUint aNotifId);

    /**

     * 2nd phase constructor.

     */

    void ConstructL();

private:

    // data

    /**

     * Active object of handling RNotifier instance

     * Own 

     */

    CNotifierActive* iNotifierActive;

    /**

     * RNotifier API

     * Not Own 

     */

    RNotifier& iNotifier;

    };

#endif // C_CUSBNOTENOTIFIER_H