/*

* Copyright (c) 2000 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 of policymanagement components

*

*/

#ifndef __DMUTIL_OBSERVER_HEADER__

#define __DMUTIL_OBSERVER_HEADER__

// INCLUDES

#include <e32base.h>

// CONSTANTS

enum TPolicyManagementEventTypes

{

	EPolicyChangedEvent = 0,

};

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CActiveObserver;

// CLASS DECLARATION

class TDMUtilPassiveObserver

{

	public:

		/**

		* Check is policies changed after the function was called last time 

	    * @return ETrue if policies is changed after the function was called last time 

        */

		static IMPORT_C TBool IsPolicyChangedL();

		/**

		* Check is RFS performed after the function was called last time 

	    * @return ETrue if RFS is performed after the function was called last time 

        */

		static IMPORT_C TBool IsRFSPerformedL();

	private:

};

/**

* Callback interface for active observer

*/

class MActiveCallBackObserver

{

	public:

		/**

		* Called when observed event is launched.

        */

		virtual void EventLaunchedL() = 0;

	private:

};

class CDMUtilActiveObserver : public CBase

{

	public:

		/**

		* Constructor for CDMUtilActiveObserver

	    * @param aType Event to be observed

	    * @return New CDMUtilActiveObserver object

        */

		IMPORT_C static CDMUtilActiveObserver* NewL( TPolicyManagementEventTypes aType);

		/**

		* Subscribe event, callback interface implementation is called when event launched 

	    * @param aDynamicCallBackObserver Object which implements callback interface

        */		

        IMPORT_C void SubscribeEventL( MActiveCallBackObserver* aDynamicCallBackObserver);

		/**

		* Unsubscribe event

        */		

		IMPORT_C void UnSubscribeEvent();

		/**

		* Destructor

        */		

		virtual ~CDMUtilActiveObserver();

	private:	

		CDMUtilActiveObserver();	

	private:

	 	CActiveObserver* iActiveObserver;

};

#endif // __DMUTIL_OBSERVER_HEADER__