/*

 * 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;

            /**

             * Notifier id pckg buffer

             */

            TPckgBuf<TInt> iNotifIdPckg;

        };

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