/*

* Copyright (c) 2010 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: 

*

*/

#ifndef STFASYNCEVENTACTIVE_H_

#define STFASYNCEVENTACTIVE_H_

#include <e32base.h>

#include <stfeventsystemdefs.h>

#include "stfasynceventlist.h"

#include <stfeventsystem.h>

// This class defines active object which represents asynchronous request

// to Event Server.

// On RunL each objects deletes itself.

class CAsyncEventActive: public CActive 

    {

    public:

        /**

        * NewL is first phase of two-phased constructor.

        */

        IMPORT_C static CAsyncEventActive* NewL(const TInt aOwnerId);

        /**

        * Destructor.

        */

        ~CAsyncEventActive();

        /** 

        * Starts active object

        */

        IMPORT_C void StartL(TRequestStatus* aStatus, TThreadId aStatusThreadId, const TDesC& aEventName, CAsyncEventList* aAsyncEventList);

        /** 

        * Checks if request to event server is in pending state

        */

        IMPORT_C TBool IsPending();

    private:

        /** 

        * C++ default constructor.

        */

        CAsyncEventActive(const TInt aOwnerId);

        /**

        * By default Symbian OS constructor is private.

        */

        void ConstructL();

        /**

        * Handles active object and deletes the object!

        */

        void RunL();

        /** 

        * DoCancel

        */

        void DoCancel();

        /** 

        * RunError

        */

        TInt RunError(TInt aError);

        /**

        * Complete caller status with specified code

        */

        TInt CompleteCallerStatus(TInt aCode);

    private:

        // List of active objects

        CAsyncEventList* iAsyncEventList;

        // Event name

        HBufC* iEventName;

        // Event system client

        REventSystem iEventSystem;

        // Status of caller

        TRequestStatus *iCallerStatus;

        // If of thread which owns caller status

        TThreadId iStatusThreadId;

        // Identifier of the owner of waiting event

        const TInt iOwnerId;

    }; /* class CAsyncEventActive */

#endif /* STFASYNCEVENTACTIVE_H_ */

// EOF