diff -r 12f60d9a73b3 -r cbffe13eac63 csxhelp/inc/csxhruntimeappwatcher.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/csxhelp/inc/csxhruntimeappwatcher.h	Wed Sep 01 12:30:56 2010 +0100
@@ -0,0 +1,107 @@
+/*
+* Copyright (c) 2006 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 if any install/unistall happens at help app
+*                 runtime
+*
+*/
+
+#ifndef CSXHRUNTIMEAPPWATCHER_H
+#define CSXHRUNTIMEAPPWATCHER_H
+
+#include <e32base.h>
+#include <f32file.h>
+
+/*
+ * Base class of Installation/Uninstallation
+ * 
+ */
+class MInstallationObserver
+    {
+public:
+    /*
+     * call back function, to handle update index
+     */
+    virtual void RuntimeUpdateIndex() = 0;
+    };
+
+/*
+ * Runtime indexing wather
+ * keep watching if user install/uninstall/modify any helps
+ * 
+ */
+class CCSXHRuntimeAppWatcher : public CActive
+    {
+public:
+    
+    /*
+     * default constructor
+     */
+    CCSXHRuntimeAppWatcher();
+    
+    /*
+     * destructor
+     */
+    ~CCSXHRuntimeAppWatcher();
+    
+    /*
+     * two-phase constructor
+     */
+    static CCSXHRuntimeAppWatcher* NewL();
+    
+    /*
+     * from base class CActive
+     * Handles an active object's request completion event
+     */
+    void RunL();
+    
+    /*
+     * from base class CActive
+     * Implements cancellation of an outstanding request
+     */
+    void DoCancel();
+    
+    /*
+     * start this active object
+     */
+    void Start();
+    
+    /*
+     * Set observer
+     * @param aObserver: App UI, notify user helps modified
+     * 
+     */
+    void SetObserver( MInstallationObserver* aObserver );
+    
+private:
+    
+    /*
+     * two-phase constructor
+     */
+    void ConstructL();
+    
+private:
+
+    /*
+     * file session
+     */
+    RFs iFileSession;
+    
+    /*
+     * observer
+     * not owned
+     */
+    MInstallationObserver* iObserver;
+    };
+    
+#endif // CSXHRUNTIMEAPPWATCHER_H