/*

* Copyright (c) 2004 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:  Declaration of FavouritesFile

*

*/

#ifndef FAVOURITES_FILE_H

#define FAVOURITES_FILE_H

//  INCLUDES

#include <favouriteshandle.h>

// FORWARD DECLARATION

class RFavouritesDb;

class CFavouritesFileImpl;

// CLASS DECLARATION

/**

* RFavouritesFile is a class derived from RFavouritesHandle. 

* Each favourites item or folder can have an associated file

* with arbitrary content.

*/

class RFavouritesFile: public RFavouritesHandle

    {

    public:     // Constructor and destructor

        /**

        * Constructor.

        * @since 0.9       

        */

        inline RFavouritesFile();

        /**

        * Close this object.

        * @since 0.9       

        * @return void

        */

        IMPORT_C void Close();

        /**

        * Open existing file with shared read-access.

        * @since 0.9       

        * @param aDb Database handle.

        * @param aUid Uid of item.

        * @return Error code.

        */

        IMPORT_C TInt Open( RFavouritesDb& aDb, TInt aUid );

        /**

        * Create new file / replace existing with exclusive write-access.

        * Existing content of the file, if any, is lost.

        * @since 0.9       

        * @param aDb Database handle.

        * @param aUid Uid of item.

        * @return Error code.

        */

        IMPORT_C TInt Replace( RFavouritesDb& aDb, TInt aUid );

    public:     // new methods

        /**

        * Read from file.

        * @since 0.9       

        * @param aDes Descriptor into which binary data is read. Any existing

        * contents are overwritten. On return, its length is set to the number

        * of bytes read.

        * @return Error code.

        */

        IMPORT_C TInt Read( TDes8& aDes ) const;

        /**

        * Writes to file.

        * @since 0.9       

        * @param aDes Descriptor from which binary data is written.

        * @return Error code.

        */

        IMPORT_C TInt Write( const TDesC8& aDes );

		/**

		* Get the size of the file.

        * @since 0.9       

		* @param aSize Gives back the size of the file.

		* @return Error code.

		*/

		IMPORT_C TInt Size(TInt &aSize) const;

    private:    // new methods

        /**

        * Implementation of Open functions.

        * @since 0.9       

        * @param aDb Database handle.

        * @param aUid Uid of item.

        * @param aFunction Function.

        * @return Error code.

        */

        TInt DoOpen( RFavouritesDb& aDb, TInt aUid, TInt aFunction );

    private:    // data

        CFavouritesFileImpl* iImpl;  ///< Implementation. Owned.

    };

#include <favouritesfile.inl>

#endif

// End of File