/*

* 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:  Implementation for presence cache reader and writer.

*

*/

#ifndef _PRESENCE_WRITER_PRIVATE_H_

#define _PRESENCE_WRITER_PRIVATE_H_

#include <QObject>

#include "presencecachewriter2.h"

#include "presencecachewritehandler2.h"

class PrcPresenceBuddyInfoQt;

/**

 * Implementation for presence cache writer. 

 */

class   PrcPresenceWriterPrivate : public QObject,  

	                            public MPresenceCacheWriteHandler2

{

    Q_OBJECT

public:

    /**

    * C++ constructor

    */

    PrcPresenceWriterPrivate();

    /**

     * Public destructor.

     */

     virtual ~PrcPresenceWriterPrivate();

public: 

   /**

    * Writes presence info to cache for a given buddy.

    * @param presenceBuddyInfo contains xsp identity and presence

    * @return true if operation successful

    */ 

     bool writePresence(const PrcPresenceBuddyInfoQt* presenceBuddyInfo) ;

    /**

      * Instantiates new buddy presence info object.

      *

      * @return New buddy presence info instance. Object ownership

      *         is returned to caller.

      * 

      */

     PrcPresenceBuddyInfoQt* newBuddyPresenceInfo() ;

    /**

     * Delete all buddies presence associated with given service.

     *

     * @param serviceName service name as in sp table

     * @return true if operation successful

     */

     bool  deleteService(const QString& serviceName);

     /**

    * Deletes all presence related to given xsp identity.

    * @param identity identity for buddy to be removed, in xsp format

    * @return true if operation successful

    */

     bool deletePresence(const QString& identity) ;

     /**

    * Cancels any async write operation going on. After calling this

    * method no callback will be received from asycn write method.

    * @return true if operation successful

    */

     bool cancelWrite();    

   /** presence cache writer Asynchronous method

     * Writes buddy presence info objects to cache. Emits 

     * handlePresencewrite signal. 

     *

     * @param presenceBuddyInfos presence infos for all buddies. 

     *         Ownership remains to caller.

     */    

     bool writeMultiplePresence(const QList<PrcPresenceBuddyInfoQt*>& presenceBuddyInfos);  

    /**

     * Subscribe for given presence buddy's change in presence. 

     *

     * @param identity buddy id, in xsp format

     *

     */

    //From MPresenceCacheWriteHandler2

    void HandlePresenceWriteL(TInt aErrorCode);

signals:

    /*

     * This signal is emitted in response to asynchronous method writeMultiplePresence.

     * Signal emitted when the operation is complete

     * @param success = true, if operation successful

     */

    void signalPresenceWrite(bool success);

private:

    /*

     * Instance of symbian Presence Writer

     * own

     */

    MPresenceCacheWriter2* iSymbianWriter ;

    };

#endif // _PRESENCE_WRITER_PRIVATE_H_