/*

* 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 the License "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:  UpdateQueue controls the feeds to be updated.

*

*/

#ifndef _UPDATEQUEUE_H_

#define _UPDATEQUEUE_H_

//  INCLUDES

#include <e32property.h>  

#include <e32base.h>

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CFeedsServer;

class CUpdateQueue;

class CUpdateAllFeedsTask;

// CLASS DECLARATION

/**

*  The feed Update Queue.

*

*  \b Library: FeedsEngine.lib

*

*  @since 7.1

*/

class CUpdateQueue : public CBase

    {

public:

    /**

     *

     * @since 7.1

     * Two-phased constructor.

     */    

    static CUpdateQueue* NewL(CUpdateAllFeedsTask* aUpdateAllFeedTask, TInt aFreq);

    /**

     *

     * @since 7.1

     * Destructor

     */

    ~CUpdateQueue();

public:

	/**

     * This method adds the feed into RArray 

     *     

     * @since 7.1

     * @return Integer.

     */

	TInt AddFeed(TInt aFeedId);

	/**

     * This method delets the feed from RArray 

     *     

     * @since 7.1

     * @return Integer.

     */

	TInt RemoveFeed(TInt aFeedId);

	/**

     * This method decrements the timer counter

     *     

     * @since 7.1

     * @return Integer.

     */

	TInt UpdateL(TInt aMinutes);

	/**

     * This method return the frequency 

     *     

     * @since 7.1

     * @return Integer.

     */

	TInt GetFreq();

	/**

     * This method return the Count 

     *     

     * @since 7.1

     * @return Integer.

     */

	TInt Count();

private:

    /**

     *

     * @since 7.1

     * C++ default constructor.

     */ 

    CUpdateQueue(CUpdateAllFeedsTask* aUpdateAllFeedTask, TInt aFreq);

    /**

     *

     * @since 7.1

     * By default Symbian 2nd phase constructor is private.

     */ 

	void ConstructL();

private:

	RArray<TInt>         iFeedIds;

	TInt                 iFreq;

	TInt                 iCurrentState;

	CUpdateAllFeedsTask* iUpdateAllFeedsTask;

	TTime                iLastAutoUpdate;

	friend class CFeedsSever;

};

#endif //_UPDATEQUEUE_H_