/*

* Copyright (c) 2002-2005 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:  Notifier for changes.

*

*/

#ifndef CSSSETTINGSNOTIFIER_H

#define CSSSETTINGSNOTIFIER_H

//  INCLUDES

#include <cenrepnotifyhandler.h>

// FORWARD DECLARATIONS

class CSSSettingsAlsNotifier;

// CLASS DECLARATION

/**

*  Notifier for changes

*  @since   1.0

*  @lib     SsSettings.lib

*/

class CSSSettingsNotifier :   public CActive,

    public MCenRepNotifyHandlerCallback

    {

    public:  // Constructors and destructor

        /**

        * C++ constructor.

        * @param aSettings reference to RSSSettings

        */

        CSSSettingsNotifier( RSSSettings& aSettings );

        /**

        * Symbian OS constructor. Must be called before usage!

        */

        void ConstructL();

        /**

        * Destructor.

        */

        virtual ~CSSSettingsNotifier();

    public: // New functions

        /**

        * Adds observer.

        * @param aSetting Set observer for this setting

        * @return KErrNone if succesful.

        */

        TInt AddNotifier( TSSSettingsSetting aSetting );

        /**

        * Removes observer

        * @param aSetting Remove observer for this setting

        */

        void RemoveNotifier( TSSSettingsSetting aSetting );

        /**

        * To get ALS controller.

        * @return The Als controller. NULL if not supported.

        */

        CSSSettingsAlsNotifier* GetAlsHandler();

        /**

        * Handle SIM refresh

        * @return Error code

        */

        TInt HandleRefresh();

    protected:  // Functions from base classes

        /**

        * From CActive. This is called when ALS Blocking status

        * is changed.

        */

        void RunL();

        /**

        * From CActive. ALS blocking change notification is cancelled.

        */

        void DoCancel();

        /** 

        * From MCenRepNotifyHandlerCallback

        */

        void HandleNotifyInt(

            TUint32 aId,

            TInt aNewValue );

        /** 

        * From MCenRepNotifyHandlerCallback.

        */

        void HandleNotifyError(

            TUint32 aId,

            TInt aError,

            CCenRepNotifyHandler* aHandler );

    private:

        // Prohibit copy constructor if not deriving from CBase.

        CSSSettingsNotifier( const CSSSettingsNotifier& );

        // Prohibit assigment operator if not deriving from CBase.

        CSSSettingsNotifier& operator= ( const CSSSettingsNotifier& );

   private:

        // Determines if als supported.

        TBool AlsSupport( 

            TBool aPPSupport, 

            TBool aCSPSupport,

            TInt aCSPError );

    private:

        // Settings data

        RSSSettings&                     iSettings;

        // Als controller

        CSSSettingsAlsNotifier*          iAls;

        // valid in RunL

        RMmCustomAPI::TGetAlsBlockStatus iAlsBlockStatus;

        // Central repository for SSSettings.

        CRepository*                     iRepository;

        // Central repository notify handlers. 

        // Must use multiple handlers to observe all the keys:

        // KSettingsAlsLine

        // KSettingsCLIR

        // KSettingsCUG

        CCenRepNotifyHandler*            iCenRepAlsNotifyHandler;

        CCenRepNotifyHandler*            iCenRepClirNotifyHandler;

        CCenRepNotifyHandler*            iCenRepCugNotifyHandler;

        // The notified keys.

        TUint32                          iNotifyKeys;

    };

#endif      // CSSSETTINGSNOTIFIER_H

// End of File