--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dosservices/dosserver/inc/SaeSignalStrengthObserver.h	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,127 @@
+/*
+* Copyright (c) 2002-2005 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:  Observes and updates to PS the network signal strength.
+*
+*/
+
+
+
+#ifndef CSAESIGNALSTRENGTHOBSERVER_H
+#define CSAESIGNALSTRENGTHOBSERVER_H
+
+//  INCLUDES
+#include <etelmm.h>
+
+// CONSTANTS
+
+// MACROS
+
+// DATA TYPES
+
+// FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+class CSaePubSubNotifier;
+
+/**
+*  Observes signal strengths from ETel
+*/
+NONSHARABLE_CLASS( CSaeSignalStrengthObserver ) : public CActive
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        */
+        static CSaeSignalStrengthObserver* NewL( CSaePubSubNotifier* aNotifier );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CSaeSignalStrengthObserver();
+
+    public: // New functions
+        
+        /**
+        * Start listening to signal strength changes. 
+        * Update current status with synchronous getter operation and request
+        * notifications about state changes.
+        * @return void
+        */
+        void Receive();
+
+    protected:  // Functions from base classes
+        
+         /**
+        * From CActive Cancels the asyncronous request
+        * @since 
+        * @return void
+        */
+        void DoCancel();
+
+        /**
+        * From CActive Handles the the event that has arrived from ETel.
+        * @since 
+        * @return void
+        */
+        void RunL();
+
+        
+    private:
+
+        /**
+        * C++ default constructor.
+        */
+        CSaeSignalStrengthObserver( CSaePubSubNotifier* aNotifier );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+        
+        /**
+        * Issue notification request to RMobilePhone.
+        */
+        void IssueRequest();
+
+    public:     // Data
+    
+    protected:  // Data
+
+    private:    // Data
+    
+        // Session with Etel server
+        RTelServer iEtelServer;
+
+        // RMobilePhone for requesting the signal strength state
+        RMobilePhone iMobilePhone;
+        
+        // Notifier to PubSub
+        CSaePubSubNotifier* iNotifier;
+        
+        // The signal strength in dBm
+        TInt32 iSignalStrength;
+        
+        // The number of signal strength bars
+        TInt8 iBar;
+        
+        // The number of last notification signal strength bars
+        TInt8 iPreviousBar;
+    };
+
+#endif      // CSAESIGNALSTRENGTHOBSERVER_H   
+            
+// End of File