diff -r f15ac8e65a02 -r 779871d1e4f4 vtuis/videotelui/inc/sliders/mvtuicomponentstateobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtuis/videotelui/inc/sliders/mvtuicomponentstateobserver.h	Wed Sep 01 12:29:12 2010 +0100
@@ -0,0 +1,41 @@
+/*
+* Copyright (c) 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:  Observer API for popup based controls
+*
+*/
+
+
+#ifndef M_VTUICOMPONENTSTATEOBSERVER_H
+#define M_VTUICOMPONENTSTATEOBSERVER_H
+
+/**
+* MVtUiComponentStateObserver
+*
+* Observer API for popup based controls
+*
+* @since S60 v3.2
+*/
+class MVtUiComponentStateObserver
+    {
+
+public:
+
+    /**
+    * Called when component state changes
+    */
+    virtual void ComponenStateChangedL() = 0;
+
+    };
+
+#endif // M_VTUICOMPONENTSTATEOBSERVER_H
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