diff -r 2e1adbfc62af -r ee64f059b8e1 internetradio2.0/songhistoryinc/uinotifyhandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/internetradio2.0/songhistoryinc/uinotifyhandler.h	Fri May 14 15:43:29 2010 +0300
@@ -0,0 +1,65 @@
+/*
+* Copyright (c) 2006-2007 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:  Interface class to notify database changes to SongHistoryView
+*
+*/
+
+
+#ifndef IR_SONGHISTORYUINOTIFYHANDLER
+#define IR_SONGHISTORYUINOTIFYHANDLER
+
+#include <e32cmn.h>
+
+/**
+* Observer interface for CIRSongHistoryView.
+* Notifies the view when new data is received.
+*/
+class MSongHistoryUINotifyHandler
+    {
+		public:
+
+			/**
+			* Invoked from CIRSongHistoryDbEng when new entry is added to the database.
+			* @param    aSongName
+			* @param    aArtistName
+			* @param    aChannelName
+			* Parameters yet to be decided.
+			*/
+				virtual void NextSongReceivedL( const TDesC& aSongName, const TDesC& aArtistName,
+							 const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;
+
+				virtual void ChannelChangedL( const TDesC& aSongName, const TDesC& aArtistName,
+						 const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;
+
+			/**
+			* Invoked from CIRSongHistoryDbEng when new entry is added to the database which *would exceed 30 entries.
+			* @param    aSongName
+			* @param    aArtistName
+			* @param    aChannelName
+			*/
+				virtual TInt RemoveSongEntry( const TDesC& aSongName, const TDesC& aArtistName,
+						const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;
+
+				virtual TInt RemoveChannelEntry( const TDesC& aSongName, const TDesC& aArtistName,
+							const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;
+
+			/**
+			* Invoked when an error occurred while notifying to UI.
+			* @param    aError      The error code.
+			*/
+				virtual void NotifyDataChangeToUIError( TInt aError ) = 0;
+
+    };
+
+#endif //IR_SONGHISTORYUINOTIFYHANDLER