// Copyright (c) 1997-2009 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:

// The definition of the MPolicyObserver class

// 

//

#ifndef __POLICYOBSERVER_H__

#define __POLICYOBSERVER_H__

#include "UnloadPolicy.h"

#include "EComEntry.h"

/**

	@internalComponent

	@since 7.0

	Used by CRegistryData to inform the load manager when a change to the registry

	occurs.

 */

class MPolicyObserver

	{

public:

/**

	@fn				DllDeletedL(CUnloadPolicy*& aUnloadPolicy) = 0

	Intended Usage	: Called to indicate that a dll has been removed from the registry

	Error Condition	: Leaves with an error code depending on implementation

	@since			7.0

	@param			aUnloadPolicy The CUnloadPolicy of the dll which has been removed

*/

	virtual void DllDeletedL(CUnloadPolicy*& aUnloadPolicy) = 0;

/**

	@fn				DllAdded(const CEComEntry& aDllInfo) = 0

	Intended Usage	: Called to indicate that a dll has been added to the registry

	Error Condition	: None

	@since			7.0

	@param			aDllInfo Information on the dll which has been added to the registry

	@return			The unload policy for the dll if one exists, NULL otherwise

*/

	virtual CUnloadPolicy* DllAdded(const CEComEntry& aDllInfo) = 0;

/**

	@fn				UpdatePolicyIndexL() = 0

	Intended Usage	: Called to indicate the index of unload policies will be out of date 

	Error Condition	: Leaves with an error code depending on implementation

	@since			7.0

	@param			aDllInfo Information on the dll which has been added to the registry

*/

	virtual void UpdatePolicyIndexL() = 0;

	};

#endif // __POLICYOBSERVER_H__