diff -r 000000000000 -r 05e9090e2422 layouts/cdl/CdlEngine/inc/CdlChangeObserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layouts/cdl/CdlEngine/inc/CdlChangeObserver.h	Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,95 @@
+/*
+* Copyright (c) 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:
+*
+*/
+#ifndef CDLCHANGEOBSERVER_H
+#define CDLCHANGEOBSERVER_H
+
+#include <e32base.h>
+#include "CdlEngine.h"
+#include "CdlClientServerStd.h"
+
+class RCdlSession;
+class CCdlEngine;
+
+/**
+* Active object that watches out for changes from the CDL server.
+*/
+NONSHARABLE_CLASS(CCdlChangeMonitor) : public CActive
+	{
+public:
+	CCdlChangeMonitor(RCdlSession& aServer, CCdlEngine* aEngine);
+	~CCdlChangeMonitor();
+
+private:
+	void Queue();
+	void RunL();
+	void DoCancel();
+	void ProcessL();
+
+private:
+	RCdlSession& iServer;
+	CCdlEngine* iEngine;					// not owned
+	TPckgBuf<SCdlServerChange> iChange;
+	};
+
+/**
+* CCdlChangeObserver records all the UIDs that a particular observer is interested in
+*/
+NONSHARABLE_CLASS(CCdlChangeObserver) : public CBase
+	{
+public:
+	static CCdlChangeObserver* NewLC(MCdlChangeObserver* aObserver, TUid aUid);
+	static CCdlChangeObserver* NewLC(MCdlChangeObserver* aObserver);
+	~CCdlChangeObserver();
+
+	MCdlChangeObserver* Observer() const;
+	void AddUidL(TUid aUid);
+
+	void HandleCustomisationChangeL(const CCdlUids& aUids);
+	void HandleAvailableRefsChangeL();
+
+private:
+	MCdlChangeObserver* iObserver;			// not owned
+	CCdlUids iUids;
+	};
+
+
+/**
+* Collection of CCdlChangeObserver objects.
+*/
+NONSHARABLE_CLASS(CCdlChangeObservers) : public CBase
+	{
+public:
+	CCdlChangeObservers();
+	~CCdlChangeObservers();
+
+	void AddCustomisationChangeObserverL(MCdlChangeObserver* aObserver, TUid aUid);
+	void AddGeneralChangeObserverL(MCdlChangeObserver* aObserver);
+	void RemoveChangeObserver(MCdlChangeObserver* aObserver);
+
+	void HandleCustomisationChangeL(const CCdlUids& aUids);
+	void HandleAvailableRefsChangeL();
+
+private:
+	TInt FindIndex(MCdlChangeObserver* aObserver) const;
+
+private:
+	typedef CArrayPtrFlat<CCdlChangeObserver> CCdlChangeObserverArray;
+	CCdlChangeObserverArray iObservers;		// contained CCdlChangeObservers are owned
+	};
+
+
+#endif