/*

* 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:  MDE object queuemanager for indexing scheduling

 *

*/

#ifndef MDEOBJECTQUEUEMANAGER_H_

#define MDEOBJECTQUEUEMANAGER_H_

#include <e32def.h>

#include <mdccommon.h>

#include "mediaobjecthandler.h"

class CMdeObjectQueueManager : public CActive

    {

public:

    /*

     * Construction

     * @param MMediaObjectHandler* callback to media object handler dont own

     * @return instance of object queue manager

     */

    static CMdeObjectQueueManager* NewL(MMediaObjectHandler* ); //For callback

    /*

     * Construction

     * @param MMediaObjectHandler* callback to media object handler dont own

     * @return instance of object queue manager

     */

    static CMdeObjectQueueManager* NewLC(MMediaObjectHandler* );

    /*

     * Destructor

     */

    virtual ~CMdeObjectQueueManager();

public:

    /*

     * AddMedItemtoQueueL

     * @param TItemId aObjId item id to be added to queue

     * @param TCPixActionType aActionType CPIX action on item

     */

    void AddMdeItemToQueueL( TItemId aObjId, TCPixActionType aActionType);

    //From CActive

    void RunL();

    void DoCancel();

    TInt RunError();

    void PauseL();

    void ResumeL();

private:

    /*

     * OverWriteOrAddToQueueL add or update item to queue

     * @param TItemId aObjId itemd id

     * @param TCPixActionType aActionType action cpix

     */

    void OverWriteOrAddToQueueL( TItemId aObjId, TCPixActionType aActionType);

    /*

     * First phase Constructor

     * @parm MMediaObjectHandler* media object handler callback

     */

    CMdeObjectQueueManager(MMediaObjectHandler* );

    /*

     * Activate the timer object to index queued media items

     */

    void ActivateAO();

    /*

     * Second phase constructor

     */

    void ConstructL();

private:

    enum TState 

    { 

        EStateNone = 0, 

        EStateWaiting 

    };

    enum THarvestingState 

    { 

        EStateResume = 0, 

        EStatePause 

    };

    struct TMdeActionRecord 

    {

    TItemId iObjectId;

    TCPixActionType iAction;

    TInt    iRetryCount;

    TMdeActionRecord()

        {

        iRetryCount = 0;

        }

    };

private:

    // Queue of documents to be indexed

    // State machine's state

    TState iState;

    THarvestingState iHState;

    // Timer which is used to delay indexing messages

    RTimer iTimer; //Timer for self activation of AO

    MMediaObjectHandler* iMdeObjectHandler; //media object handler

    };

#endif /* MDEOBJECTQUEUEMANAGER_H_ */