/*

* Copyright (c) 2005 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:  Declaration of the CDbWatcher class

*

*/

#ifndef DBWATCHER_H

#define DBWATCHER_H

#include "dirwatcher.h"

#include "watcherobserver.h"

/**

 *  Watches the rights database to detect adding or removing of files

 *

 *  Uses change notifications on the RDB directories, restarts the device if

 *  unauthorized modifications have been detected

 *

 *  @since S60 3.0

 */

NONSHARABLE_CLASS( CDbWatcher ): public CBase

    {

public:

    /**  Number of directories to watch */

    static const TInt KNumDirs = 17;

    static CDbWatcher* NewL( MWatcherObserver& aObserver );

    virtual ~CDbWatcher();

    /**

     * Start watching the database

     *

     * @since S60 3.0

     */

    void StartWatching();

protected:

// from base class CActive

    /**

     * From CActive.

     * Cancel outstanding requests

     *

     * @since S60 3.0

     */

    void DoCancel();

    /**

     * From CActive.

     * Handle events

     *

     * @since S60 3.0

     */

    void RunL();

private:

    CDbWatcher();

    void ConstructL( MWatcherObserver& aObserver );

private: // data

    /**

     * Actual watcher objects

     */

    CDirWatcher* iDirWatcher[KNumDirs]; 

    /**

     * Array of request status fields

     */

    TRequestStatus iRequestStatus[KNumDirs];

    /**

     * File server instance

     */

    RFs iFs;

    };

#endif // DBWATCHER_H