diff -r 4ea6f81c838a -r 0e9bb658ef58 mulwidgets/muldatamodel/inc/mulfilterao.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mulwidgets/muldatamodel/inc/mulfilterao.h	Wed Sep 01 12:23:18 2010 +0100
@@ -0,0 +1,115 @@
+/*
+* Copyright (c) 2007-2008 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:  Active object for performing Async filtering
+*
+*/
+
+
+#ifndef MULFILTERAO_H_
+#define MULFILTERAO_H_
+
+#include <e32base.h>
+
+#include <alf/alfvarianttype.h>
+#include <osn/osndefines.h>
+
+#include "mulcallback.h"
+
+
+namespace osncore
+    {
+    template <class T> class CAlfPtrVector;  
+    class UString;
+    }  
+using namespace osncore;
+
+namespace Alf
+	{
+//Forward Declaration
+	 
+class MulCacheManager;
+class MulDataWindow;
+class MulFilter;
+class IMulFilterDataProvider;
+class MulCallback;
+ 	  
+class MulFilterAo : public CActive
+    {
+    
+public: //constructor and destructor
+
+	/**
+	 * symbian constcutor
+	 * 
+	 * @param aModel Model refrence
+	 */
+	//static MulFilterAo* NewL( IMulFilterDataProvider& aModel );
+    
+    /**
+     * Destructor
+     */
+    ~MulFilterAo();
+    
+public: //constructor and destructor
+
+	/**
+	 * C++ constcutor
+	 * 
+	 * @param aModel Model refrence
+	 */
+	MulFilterAo(IMulFilterDataProvider& aModel );   
+	
+	/**
+	 * symbian Second phase constructor
+	 */
+	//void ConstructL();
+    
+private: //from CActive
+
+	void RunL();
+	
+	void DoCancel();
+
+public: //new method
+
+    /**
+     * Perform Async filtering. Model call this function when SetFilter is called on Model.
+     * After performing async filtering  function will notify model via callback object.
+     * 
+     * @param aFilter Filter object
+     * @param aCallback Callback object
+     */
+	void DoAsyncFilter(MulFilter& aFilter,MulCallback aCallback);
+
+private:
+    
+    /**
+     * Perform garbage collection operation
+     */
+    void DoFilter();
+    
+private: //data
+
+	IMulFilterDataProvider& 		mMulModel;
+	MulFilter*						mFilter; //not own
+	MulCallback						mCallback;
+    };
+	    
+    } //namespace Alf
+
+#endif /*MULFILTERAO_H_*/
+
+//End of file
+
+