--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneuis/TelephonyDeviceMode/inc/CTelDMCallStateListener.h	Fri Jun 04 10:19:18 2010 +0100
@@ -0,0 +1,105 @@
+/*
+* 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:  Header file for MTelDMCallStateObserver class.
+*
+*/
+
+
+
+#ifndef CTELDMCALLSTATELISTENER_H
+#define CTELDMCALLSTATELISTENER_H
+
+//  INCLUDES
+#include    <e32property.h>
+#include    <e32base.h>
+
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+class MTelDMCallStateObserver;
+
+/**
+*  Call state listener. Listening TelephonyCallState PS key. 
+*
+*  @since 3.1
+*/
+ 
+NONSHARABLE_CLASS( CTelDMCallStateListener ) : public CActive
+    {
+    public: // Constructors and destructors.
+
+        /**
+        * Two-phased constructor.
+        */ 
+        static CTelDMCallStateListener* NewL();
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CTelDMCallStateListener();
+
+   
+    public:
+   
+        void AddObserverL( MTelDMCallStateObserver& aCallStateObserver );
+        
+    private: // from CActive
+   
+        /**
+        * @see CActive::RunL.
+        */
+        void RunL();
+
+        /**
+        * @see CActive::DoCancel.
+        */
+        void DoCancel();
+     
+    private:
+        
+        /**
+        * Handle notification request
+        */      
+        void HandleChange();
+        
+        /**
+        * Start notification.
+        */
+        void IssueRequest();
+        
+        /**
+        * Constructor.
+        */
+        CTelDMCallStateListener();
+
+        /**
+        * Symbian OS constructor.
+        */
+        void ConstructL();
+   
+    private:
+        // Owned Publish & Subscribe instance.
+        RProperty iProperty;
+        
+        // Call state
+        TInt iCallState;
+        
+        // Call State Change Observer array.
+        RPointerArray< MTelDMCallStateObserver > iObserverArray;
+    };
+ 
+#endif      // CTELDMCALLSTATELISTENER_H  
+
+// End of File