diff -r 235a7fc86938 -r 2edacbf5d3f9 imagehandlingutilities/thumbnailmanager/tmcommon/inc/tmrpropertyobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagehandlingutilities/thumbnailmanager/tmcommon/inc/tmrpropertyobserver.h	Fri Mar 19 09:35:30 2010 +0200
@@ -0,0 +1,108 @@
+/*
+* Copyright (c) 2006-2007 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:  TM RProperty Observer
+ *
+*/
+
+
+#ifndef TMRPROPERTYDOBSERVER_H
+#define TMRPROPERTYDOBSERVER_H
+
+#include <e32base.h>
+#include <w32std.h>
+#include <e32property.h> 
+
+
+/**
+ * Observer interface for signaling the RProperty change
+ */
+class MTMRPropertyObserver
+    {
+public:
+
+    virtual void RPropertyNotification(const TInt aError, const TUid aKeyCategory, const TUint aPropertyKey, const TInt aValue) = 0;
+    };
+
+/**
+ *  Active object for observing P&S keys
+ *
+ *  @since S60 v5.0
+ */
+class CTMRPropertyObserver: public CActive
+    {
+public:
+
+    /**
+     * Two-phased constructor.
+     *
+     * @since S60 v5.0
+     * @return Instance of CTMRPropertyObserver.
+     */
+    static CTMRPropertyObserver* NewL( MTMRPropertyObserver& aObserver, const TUid& aKeyCategory,
+                                      const TInt aPropertyKey, TBool aDefineKey);
+
+    /**
+     * Destructor
+     *
+     * @since S60 v5.0
+     */
+    virtual ~CTMRPropertyObserver();
+    
+protected:
+
+    /**
+     * Handles an active object's request completion event.
+     *
+     * @since S60 v5.0
+     */
+    void RunL();
+
+    /**
+     * Implements cancellation of an outstanding request.
+     *
+     * @since S60 v5.0
+     */
+    void DoCancel();
+
+private:
+
+    /**
+     * C++ default constructor
+     *
+     * @since S60 v5.0
+     * @return Instance of CTMRPropertyObserver.
+     */
+    CTMRPropertyObserver( MTMRPropertyObserver& aObserver, const TUid& aKeyCategory,
+                         const TInt iPropertyKey, TBool aDefineKey);
+
+    /**
+     * Symbian 2nd phase constructor can leave.
+     *
+     * @since S60 v5.0
+     */
+    void ConstructL();
+
+private:
+    
+    // not own
+    MTMRPropertyObserver& iObserver;
+    
+    const TUid& iKeyCategory;
+    RProperty iProperty;
+    TInt iPropertyKey;
+    
+    TBool iDefineKey;
+};
+
+#endif // TMRPROPERTYDOBSERVER_H