--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmappfw_plat/mpx_common_api/inc/mpxpluginhandlerobserver.h	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,59 @@
+/*
+* Copyright (c) 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:  Observer interface for the plugin handler.
+*
+*/
+
+
+#ifndef MPXPLUGINHANDLEROBSERVER_H
+#define MPXPLUGINHANDLEROBSERVER_H
+
+// INCLUDES
+#include <e32std.h>
+
+/**
+*  Mix-in class for callback.
+*
+*  @lib mpxcommon.lib
+*/
+NONSHARABLE_CLASS(MMPXPluginHandlerObserver)
+    {
+public:
+    enum TPluginHandlerEvents
+        {
+        EPluginAdd,             // generated after the plugin DLL is copied
+        EPluginUpdateStart,     // generated before the plugin DLL is unloaded (if already loaded)
+        EPluginUpdateEnd,       // generated after the new plugin version is loaded (if old version was loaded)
+        EPluginRemove           // generated after the plugin DLL is removed but before the plugin instance is unloaded
+        };
+
+public:
+    /**
+    * Indicates a change in the plugins managed by the handler.
+    *
+    * @since S60 3.2.3
+    * @param aEvent event code
+    * @param aPluginUid plugin this event is related to
+    * @param aLoaded ETrue if the plugin is loaded, EFalse otherwise
+    * @param aData data associated with the event, its meaning depends on the event:
+    *          EPluginAdd - new plugin version
+    *          EPluginUpdateStart - new plugin version
+    *          EPluginUpdateEnd - new plugin version
+    *          EPluginRemove - old plugin version
+    */
+    virtual void HandlePluginHandlerEvent(TPluginHandlerEvents aEvent, const TUid& aPluginUid,
+        TBool aLoaded, TInt aData) = 0;
+    };
+
+#endif // MPXPLUGINHANDLEROBSERVER_H