/*

* Copyright (c) 2006 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: 

*

*/

#ifndef _PREVIOUSLYINSTALLEDAPPSCACHE_H

#define _PREVIOUSLYINSTALLEDAPPSCACHE_H

#include <e32base.h>

#include <e32cmn.h>

// @released

// @publishedPartner

//class RFs;

// It is assumed there is only ever ONE instance of this class

class CPreviouslyInstalledAppsCache : public CBase

	{

public:

	static CPreviouslyInstalledAppsCache *NewL();

	~CPreviouslyInstalledAppsCache();

	/**

	 * Read the cache from disk 

	 *

	 * nb. Cache file absense is not counted as an error.

	 */

	void InitFromCacheFileL();

	/**

	 * Query the SIS registry and make sure ALL listed packages (not

	 * augmentations) are in our cache. Does not flush to disk

	 *

	 * This needs ReadUserData

	 */

	void UpdateAllL();

	/**

	 * Query the SIS registry to check if the specified package is

	 * registered add it to the cache.  Does not flush to disk

	 *

	 * This does not need any capabilities.

	 */

	void UpdateAddL(TUid aUid);

	/**

	 * Query if the specified package has ever been cached as installed.

	 *

	 * @param UID of package to query

	 * @retval TBool ETrue if previously cached as installed

	 */

	TBool HasBeenPreviouslyInstalled(TUid aPackageId) const;

	/**

	 * Flush cache to disk.

	 */

	void FlushToDiskL();

private:

	CPreviouslyInstalledAppsCache();

	void ConstructL();

	RArray<TUid> iPrevPkgUids;

	RFs iFs;

	};

#endif