diff -r 25fce757be94 -r e02eb84a14d2 usbuis/usbui/USBClassChangeUIPlugin/inc/USBClassChangeUIPluginCRWatcher.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbuis/usbui/USBClassChangeUIPlugin/inc/USBClassChangeUIPluginCRWatcher.h	Wed Sep 01 12:20:49 2010 +0100
@@ -0,0 +1,142 @@
+/*
+* Copyright (c) 2005, 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:  Central repository key watcher class.
+*
+*/
+
+
+#ifndef USBCLASSCHANGEUIPLUGINCRWATCHER_H
+#define USBCLASSCHANGEUIPLUGINCRWATCHER_H
+
+// INCLUDES
+#include <centralrepository.h>
+
+// FORWARD DECLARATIONS
+class CRepository; 
+
+/**
+* A callback interface for informing change of a setting in Central Repository
+*/
+class MUSBUICRSettingObserver
+    {
+    public: // New functions
+        
+        /**
+        * Informs the observer that a setting has been changed. 
+        * @param aKey The changed key. 
+        * @return None.
+        */
+        virtual void SettingChangedL( TUint32 aKey ) = 0;
+    };
+
+
+/**
+* CUSBClassChangeUIPluginCRWatcher detects a change of the value of the CR key.
+* CUSBClassChangeUIPluginCRWatcher provides CActive object that is used to 
+* detect when the value of the selected key in Central Repository is changed 
+* by the USBWatcher. One observer can be notified by one or more
+* USBClassChangeUIPluginCRWatcher objects, each watching different keys. 
+*/
+class CUSBClassChangeUIPluginCRWatcher : public CActive
+    {
+        
+    public:
+
+        /**
+        * Factory method NewL
+        * @param aOwner     The observer to be notified on the change. 
+        * @param aKey       The Central Repository key to be watched. 
+        * @param aOneShot   If false, the listening is restarted after change.
+        * @return           The new watcher object. 
+        */
+        static CUSBClassChangeUIPluginCRWatcher* NewL( 
+            MUSBUICRSettingObserver& aOwner, TUint32 aKey, 
+            TBool aOneShot = EFalse);
+
+        /**
+        * Starts listening for notifications. If already listening, nothing 
+        * happens.
+        */
+        void StartListeningL();
+
+        /**
+        * Stops listening for notifications. If already stopped, nothing 
+        * happens.
+        * @param none
+        * @return none 
+        */
+        void StopListening();
+
+        /**
+        * C++ default constructor
+        * @param aOwner     The observer to be notified on the change. 
+        * @param aKey       The Central Repository key to be watched. 
+        * @param aOneShot   If false, the listening is restarted after change.
+        */
+        CUSBClassChangeUIPluginCRWatcher( 
+            MUSBUICRSettingObserver& aOwner, TUint32 aKey, 
+            TBool aOneShot = EFalse);
+
+        /**
+        * Destructor.
+        */
+        virtual ~CUSBClassChangeUIPluginCRWatcher();
+
+    private:
+
+        /**
+        * Constructor.
+        * @param none
+        */
+
+        void ConstructL();
+
+        /**
+        *	Implements CActive
+        *   If this is not a one-shot CR watcher, the listening is restarted.
+        *	@param none
+        *	@return none
+        */
+        void RunL();
+    
+        /**
+        *	Implements CActive
+        *	@param aError the error returned
+        *	@return error
+        */
+        TInt RunError(TInt aError);
+
+        /**
+        *	Implements CActive
+        *	@param none
+        *	@return none
+        */
+        void DoCancel();
+
+     
+    private:
+        /** USB Watcher repository access */
+        CRepository* iPersonalityRepository;
+        /** The observer to be notified */
+        MUSBUICRSettingObserver& iOwner;
+        /** The repository key to be watcher */
+        TUint32 iKey;
+        /** If iOneShot is false, listening is restarted on notification */
+        TBool iOneShot;
+    };
+
+
+#endif      // USBCLASSCHANGEUIPLUGINCRWATCHER_H
+
+// End of File