public: // Constructors and destructor

	    /**

	    * Two-phased constructor.

	    */

	    IMPORT_C static CSPSettings* NewL();

	    /**

	    * Two-phased constructor.

	    */

	    IMPORT_C static CSPSettings* NewLC();

	    /**

	    * Destructors.

	    */

	    IMPORT_C virtual ~CSPSettings();

	public:

	    /**

	     * Stores new service provider settings entry, 

	     * service Id is returned inside aEntry object

	     *

	     * @since S60 v3.2

	     * @param aEntry New service provider settings entry, on return service Id is filled in

	     * @return error code

	     */

	    IMPORT_C TInt AddEntryL( CSPEntry& aEntry );

	    /**

	     * Search service provider settings entry by service ID. 

	     *

	     * @since S60 v3.2

	     * @param aServiceId Id of requested xSP settings entry

	     * @param aEntry on return, SP settings entry corresponding to aServiceId.

	     * @return error code, KErrNone if succeeded, otherwise system wide error code

	     */

	    IMPORT_C TInt FindEntryL( TServiceId aServiceId, CSPEntry& aEntry );

	    /**

	     * Updates service provider settings entry to settings storage.

	     * Service ID must be set to entry before update.

	     *

	     * @since S60 v3.2

	     * @param aEntry Updated service provider settings entry

	     * @return error code, KErrNone if update succeeded, otherwise system wide error code

	     */

	    IMPORT_C TInt UpdateEntryL( const CSPEntry& aEntry );

	    /**

	     * Deletes service provider settings entry from storage by service ID.

	     *

	     * @since S60 v3.2

	     * @param aEntryId Id of settings entry which is going to be deleted

	     * @return error code, KErrNone if delete succeeded, otherwise system wide error code

	     */

	    IMPORT_C TInt DeleteEntryL( TServiceId aServiceId );

	    /**

	     * Search property of service provider settings entry from storage.

	     *

	     * @since S60 v3.2

	     * @param aServiceId The service ID of requested service entry

	     * @param aPropertyName property name to be found

	     * @param aProperty on return, requested property

	     * @return error code, KErrNone if succeeded, otherwise system wide error code

	     */

	    IMPORT_C TInt FindPropertyL( TServiceId aServiceId,

	                                TServicePropertyName aPropertyName,

	                                CSPProperty& aProperty );

	    /**

	     * Add or update properties of service provider settings entry to storage.

	     * If property name exists, update property. If property doesn't exist,

	     * add property

	     *

	     * @since S60 v3.2

	     * @param aServiceId The ID of updated service entry

	     * @param aPropertyArray new properties to be added or updated

	     * @return error code, KErrNone if update succeeded, otherwise system wide error code

	     */

	    IMPORT_C TInt AddOrUpdatePropertiesL( TServiceId aServiceId, 

	                                  		  const RPropertyArray& aPropertyArray );

	    /**

	     * Add or update one property of service provider settings entry to storage.

	     * If property name exists, update property. If property doesn't exist,

	     * add property

	     *

	     * @since S60 v3.2

	     * @param aServiceId The ID of updated service entry

	     * @param aProperty new property to be added or updated

	     * @return error code, KErrNone if update succeeded, otherwise system wide error code

	     */

	    IMPORT_C TInt AddOrUpdatePropertyL( TServiceId aServiceId, 

	                                  		const CSPProperty& aProperty );

	    /**

	     * Return count of service provider settings entries in storage.

	     *

	     * @since S60 v3.2

	     * @return Count of stored service provider settings.

	     */

	    IMPORT_C TInt SettingsCountL();

	    /**

	     * Search all service provider IDs from storage

	     *

	     * @since S60 v3.2

	     * @param aServiceIds An array containing returned service IDs

	     * @return error code

	     */

	    IMPORT_C TInt FindServiceIdsL( RIdArray& aServiceIds );

	    /**

	     * Search all service names from settings storage by given service IDs.

	     * Removes ID from array if it is not found from settings storage.

	     *

	     * @since S60 v3.2

	     * @param aServiceIds An array of service IDs

	     * @param aServiceNames on return, array which saves found service names 

	     * @return error code

	     */

	    IMPORT_C TInt FindServiceNamesL( RIdArray& aServiceIds,

	                                    CDesCArray& aServiceNames );

	   /**

	     * Search subservice properties of requested service provider settings entry by ID 

	     * and subservice type

	     *

	     * @since S60 v3.2

	     * @param aServiceId The ID of requested service entry

	     * @param aPropertyType property type of sub service

	     * @param aPropertyArray on return,  array which saves found subservice properties

	     * @return error code

	     */

	    IMPORT_C TInt FindSubServicePropertiesL( TServiceId aServiceId,

	    										TSPItemType aPropertyType,

	                                            RPropertyArray& aPropertyArray );

	    /**

	     * Deletes service properties by service ID and property name.

	     *

	     * @since S60 v3.2

	     * @param aServiceId The service ID of requested service entry

	     * @param aNameArray name of properties to be deleted

	     * @return error code

	     */

	    IMPORT_C TInt DeleteServicePropertiesL( TServiceId aServiceId,

	                                            const RPropertyNameArray& aNameArray );

	    /**

	     * Find service IDs with same properties

	     *

	     * @since S60 v3.2

	     * @param aPropertyArray property array

	     * @param on return, service Ids with same properties

	     * @return error code

	     */

	    IMPORT_C TInt FindServiceIdsFromPropertiesL( const RPropertyArray& aPropertyArray, 

	    											 RIdArray& aServiceIds );

	    /**

	     * Get SIP VoIP software version.

	     *

	     * @since S60 v3.2

	     * @return SIP VoIP software version

	     */

	    IMPORT_C static const TDesC& GetSIPVoIPSWVersion();

	    /**

	     * Check feature is supported or not

	     *

	     * @since S60 v3.2

	     * @return SIP VoIP software version

	     */

	    IMPORT_C TBool IsFeatureSupported( TSPServiceFeature aFeature );

	private:

	    /**

	    * C++ default constructor.

	    */

	    CSPSettings();

	    /**

	    * By default Symbian 2nd phase constructor is private.

	    */

	    void ConstructL();

	    /**

	    * Commit or rollback transaction

	    * @since S60 v3.2

	    * @param aError error code of CenRep operation

	    * @param aServiceId changed service Id

	    * @return error code

	    */

	    TInt CommitOrRollbackL( TInt aError, TServiceId aServiceId );

	    /**

	     * Check is VoIP Service Id and then are Properties VoIP related

	     *

	     * @since S60 v3.2.3

	     * @return KErrNotSupported if VoIP not supported and checking 

	     * of Service Id and Properties gives true

	     */

	    TInt CheckSupportedL( TServiceId aServiceId, const RPropertyNameArray& aNameArray );

	    /**

	     * Check is VoIP Service Id

	     *

	     * @since S60 v3.2.3

	     * @return KErrNotSupported if VoIP not supported and checking 

	     * of Service Id gives true

	     */

	    TInt CheckSupportedL( TServiceId aServiceId );

	    /**

	     * Check is SP item type VoIP related

	     *

	     * @since S60 v3.2.3

	     * @return KErrNotSupported if VoIP not supported and checking 

	     * of SP item type gives true

	     */

		TInt CheckSupportedL( TSPItemType aPropertyType );

	    /**

	     * Check does an array have Properties VoIP related

	     *

	     * @since S60 v3.2.3

	     * @return KErrNotSupported if VoIP not supported and checking 

	     * of the array gives true

	     */

		TInt CheckSupportedL( const RPropertyArray& aPropertyArray );

	private: // data

	    /**

	     * Settings engine

	     * Own.

	     */

	    CSPSettingsEngine* iSettingsEngine;

	    /**

	     * Feature manager support VoIP

	     * Own.

	     */

	    TBool iFeatureManagerSupportVoIP;