/*

* Copyright (c) 2007-2008 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:  Active object that checks if files have been deleted outside camera

*

*/

#ifndef CAMFILECHECKAO_H

#define CAMFILECHECKAO_H

//  INCLUDES

#include <e32base.h>

#include <bautils.h>

#include "CamAppController.h"

#include "CamBurstCaptureArray.h"

/**

* Abstract API for file check observer. 

* Provides an asynchronous 'callback' method to inform derived classes

* that the file checking operation has been completed.

*

*  @since 2.8

*/

class MCamFileCheckObserver

    {

    public:

        /**

        * Callback to notify that file checking operation has completed.

        * @param aStatus Number of files that were missing

        * @param aError  Error code

        */

        virtual void FileCheckingCompleteL( TInt aStatus, TInt aError ) = 0;

    };

/**

*  Class to manage the asynchronous file deletion checking 

*  @since 2.8

*/

class CCamFileCheckAo : public CActive

    {

    public:  // Constructors and destructor

        ~CCamFileCheckAo();

        /**

        * Two-phased constructor.

        * @since 2.8

        * @param aObserver Informed when image saving has completed

        */

        static CCamFileCheckAo* NewL( CCamAppController& aController, MCamFileCheckObserver& aObserver );

	void Start();

    private:

        /**

        * Constructor

        * @since 2.8

        * @param aObserver Informed when image saving has completed

        */

        CCamFileCheckAo( CCamAppController& aController, MCamFileCheckObserver& aObserver  );

        /**

        * 2nd phase construction

        * @since 2.8

        */

        void ConstructL();

        /**

        * Cancels the active object

        * @since 2.8

        */

        void DoCancel();

        /**

        * Perform the next scheduled task

        * @since 2.8

        */

        void RunL();

        /**

        * Perform error reporting and cleanup

        * @since 2.8

        */

	TInt RunError( TInt aError );

	/**

	*

	*/

	void StartRequest();

    private:

        CCamAppController& iController;

        MCamFileCheckObserver& iObserver; // informed when file checking has completed

        TInt iFileIndex;

        TInt iFileCount;

        CCamBurstCaptureArray* iArray;

        RFs iFs;

        TBool iEmptyRun;	

    };

#endif      // CAMFILECHECKAO_H

// End of File