/*

* 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 "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:  Central Repository about DB state change information observer

 *

*/

#ifndef C_CHDBSTATEHANDLER_H

#define C_CHDBSTATEHANDLER_H

#include <e32base.h>	// For CActive, link against: euser.lib

class CRepository;

class CCHFactorySettings;

class CCHDbStateHandler :

	public CActive

	{

public:

	/*

	 * Destructor.

	 */

	~CCHDbStateHandler();

	/**

	 * Two-phased constructor.

	 */

	static CCHDbStateHandler* NewL( CCHFactorySettings* aCallback );

private:

	/**

	* Simply constructor.

	*/

	CCHDbStateHandler( CCHFactorySettings* aCallback );

	/**

	* 2nd phase constructor.

	*/

	void ConstructL();

private:

	/**

	* From CActive.

	* Invoke when asynchronous request will be completed.

	*

	* @since S60 S60 v3.1

	*/

	void RunL();

	/**

	* From CActive.

	* Invoke for canceling asynchronous request.

	*

	* @since S60 S60 v3.1

	*/	

	void DoCancel();

	/**

	 * Override to handle leaves from RunL(). Default implementation causes

	 * the active scheduler to panic.

	 * 

	 * @since S60 S60 v3.1

	 */

	TInt RunError(TInt aError);

private:

	/**

	 */

	void ConstructFactorySettingsPathL();

	/**

	 * Removes parsed Factory Settings files

	 */

	void RemoveFactorySettingsParsedFilesL();

	/**

	 * Handle repository db state.

	 * If KSQLDBStateRestored state match then calls HandleRestoredDbStateL

	 * remove repository db state KSQLDBStateRestored, add KSQLDBStateNormal.

	 */

	void HandleDbStateL();

	/**

	 * Handle restored db state.

	 * Calls RemoveFactorySettingsParsedFilesL and call UpdateL on iCallback

	 * member.

	 */

	void HandleRestoredDbStateL();

private:

	/**

	 * Pointer to repository.

	 * Own.

	 */

    CRepository* iRepository;

    /**

     * Interface for notifying need of update after DB restore.

     * Not own.

     */

    CCHFactorySettings* iCallback;

    /**

     * File server session.

     */

    RFs iFs;

    /**

     * Path of parsed Factory Settings

     */

    TFileName iFSPath;

	};

#endif // C_CHDBSTATEHANDLER_H