{

    public: // Constructor and destructor

        /**

        * Two-phased constructor.

        */

        IMPORT_C static CSPNotifyChange* NewL( MSPNotifyChangeObserver& aObserver );

        /**

        * Destructors.

        */

        IMPORT_C virtual ~CSPNotifyChange();

    public: 

        /**

         * Issue notify service change rquest.

         *

         * @since S60 V3.2

         * @param aServiceIds The service ID array of monitored service entries

         */

        IMPORT_C void NotifyChangeL( const RIdArray& aServiceIds );

        /**

         * Cancel notify change.

         *

         * @since S60 V3.2

         */

        IMPORT_C void NotifyChangeCancel();

    protected: // from CActive

        void DoCancel();

        void RunL();

        TInt RunError( TInt aError );

        void Subscribe();

    private:

        /**

        * C++ default constructor.

        */

        CSPNotifyChange( MSPNotifyChangeObserver& aObserver );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

    private:

        /**

         * Publish & Subscribe connection

         */

        RProperty       iProperty;

        /**

         * Observer object

         */

        MSPNotifyChangeObserver& iObserver;

        /**

         * Id array

         */

        RIdArray        iIdArray;

        /**

         * Contains buffered P&S data

         */

        CSpsBufferedPublisher* iData;

    };