/*

* Copyright (c) 2007 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:  Handles system agent events*

*/

#ifndef CAMSAEVENTACTIVE_H

#define CAMSAEVENTACTIVE_H

//  INCLUDES

#include <saclient.h>

#include <e32base.h>

// FORWARD DECLARATIONS

class CCamAppController;

// CLASS DECLARATION

/**

* Active Object listening to events coming from System Agent

* @since 2.8

*/

class CCamSAEventActive : public CActive 

    {

    public: // Constructors and destructor

        /**

        * C++ constructor

        * @since 2.8

        * @param aController reference to CCamAppController instance

        * @param aSystemAgent System agent handle

        */

        CCamSAEventActive( CCamAppController& aController,

                            const RSystemAgent& aSystemAgent );

        /**

        * Destructor.

        */

        virtual ~CCamSAEventActive();

    public:

        /**

        * Issue a request to receive events from System Agent

        * @since 2.8

        */

        void IssueRequest();

    private: // Functions from base classes

        /**

        * From CActive, called when RunL() is trapped by Active Scheduler

        * @since 2.8

        * @param aError the error code trapped from RunL()

        * @return TInt KErrNone

        */

        TInt RunError( TInt aError );   

        /**

        * From CActive called when an event comes from System Agent

        * Calls HandleSAEvent in Controller to handle the event

        * @since 2.8

        */

        void RunL();

        /**

        * From CActive Cancel request

        * @since 2.8

        */

        void DoCancel();

    private:

        CCamAppController& iController;

        RSystemAgent iSystemAgent;

        TSysAgentEvent iSAEvent;

        TBool iRequestIssued;

    };

#endif  // CAMSAEVENTACTIVE_H   

// End of File