/*

* Copyright (c) 2008-2009 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:

*

*/

/**

 @file

 @internalComponent

*/

#ifndef EVENTMAN_H

#define EVENTMAN_H

#include <e32base.h>

#include "msmm_internal_def.h"

class MMsmmSrvProxy;

class CDeviceEventHandler;

NONSHARABLE_CLASS (CDeviceEventQueue) : public CActive

    {

public:

    ~CDeviceEventQueue();

    static CDeviceEventQueue* NewL(MMsmmSrvProxy& aServer);

    static CDeviceEventQueue* NewLC(MMsmmSrvProxy& aServer);

    /** Queue a device event 

    * Intends to be used by CMsmmSession class

    */

    void PushL(const TDeviceEvent& aEvent);

    /** Finalize events in queue

    * Intends to be used by CMsmmServer when last session has been closed.

    * This function will remove all pending events of adding a interface

    * from the queue. It also cancels adding events that currently is being

    * handled in CDeviceEventHandler. 

    */

    void Finalize();

    /** Return count of events in queue

    */

    inline TUint8 Count() const;

protected:

    // Derived from CActive    

    void DoCancel();

    void RunL();

    TInt RunError(TInt aError);

private:

    CDeviceEventQueue(MMsmmSrvProxy& aServer);

    void ConstructL();

    void AppendAndOptimizeL(const TDeviceEvent& aEvent);

    void StartL();

    void SendEventL();

    inline TBool IsEventAvailable() const;

    TDeviceEvent Pop();

private:

    MMsmmSrvProxy& iServer;

    CDeviceEventHandler* iHandler; // Owned

    RArray<TDeviceEvent> iEventArray;

    };

#include "eventqueue.inl"

#endif /*EVENTMAN_H*/