--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/EikStd/coctlinc/akncbacontentobserver.h	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,44 @@
+/*
+* 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 AKNCBACONTENTOBSERVER_H
+#define AKNCBACONTENTOBSERVER_H
+
+#include <e32base.h>
+
+class CEikCba;
+
+/**
+ * This class provides means to set content observer
+ * for @c CEikCba.
+ * @since S60 v5.2
+ */
+class AknCbaContentObserver
+    {
+public:
+    /**
+     * Sets content observer.
+     * @param aCba Cba to be observer.
+     * @param aCallBack Call back method to invoke when 
+     *        value of 'empty OR invisible' boolean expression
+     *        changes.
+     */
+    IMPORT_C static void SetContentObserver( 
+        CEikCba* aCba, 
+        TCallBack aCallBack );
+    };
+
+#endif // AKNCBACONTENTOBSERVER_H