diff -r 000000000000 -r f3d95d9c00ab fmradio/fmradioengine/inc/fmradiosystemeventdetector.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fmradio/fmradioengine/inc/fmradiosystemeventdetector.h	Tue Feb 02 00:17:10 2010 +0200
@@ -0,0 +1,129 @@
+/*
+* Copyright (c) 2004-2007 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:  Header file for CFMRadioSystemEventDetector.
+*
+*/
+
+
+#ifndef CFMRADIOSYSTEMEVENTDETECTOR_H
+#define CFMRADIOSYSTEMEVENTDETECTOR_H
+
+#include <e32base.h>
+
+#include "fmradiopropertyobserver.h"
+
+class MFMRadioSystemEventDetectorObserver;
+
+/** System properties mappings */
+enum TFMRadioSystemEvents
+   {
+   EFMRadioNetworkCoverageProperty = 0,
+   EFMRadioCallProperty,
+   EFMRadioAudioResourcesProperty,
+   EFMRadioVoiceUiProperty
+   };
+
+/**
+* Catches notification of the call and network state changes.
+*
+* Class provides implementation to detect system events and notify UI components of the event,
+* Class keeps several instances of CFMRadioPropertyObserver, and those instances send event notifications 
+* about the particular system component state change. 
+*/
+class CFMRadioSystemEventDetector : public CBase, public MFMRadioPropertyChangeObserver
+    {
+    public:
+
+        /**
+        * Two-phased constructor.
+        * @param aObserver a reference to the observer interface implementer
+        */
+        static CFMRadioSystemEventDetector* NewL(MFMRadioSystemEventDetectorObserver&  aObserver);
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CFMRadioSystemEventDetector();
+
+		/**
+		* Returns network coverage state.
+		*/
+		TBool IsNetworkCoverage() const;
+
+        /** Is Auto resume allowed; based on categories */		
+		TBool IsAutoResumePossible() const;
+		
+		/**
+		* Returns current call state.
+		*/
+		TBool IsCallActive() const;
+
+
+
+    private:
+
+        /**
+        * By default EPOC constructor is private.
+        */
+        void ConstructL();
+
+        /**
+        * C++ default constructor.
+        * @param aObserver a reference to the observer interface implementer     
+        */
+        CFMRadioSystemEventDetector(MFMRadioSystemEventDetectorObserver&  aObserver);
+        /**
+        * Callback for auto resume timer
+        * @param aSelfPtr pointer to itself
+        */        
+        static TInt StaticAutoResumeTimerCallback( TAny* aSelfPtr );
+        /**
+         * Report audio resource availability to observers.  
+         */
+        void NotifyAudioResourcesAvailability();
+    
+        // From base class MFMRadioPropertyChangeObserver
+        void HandlePropertyChangeL(const TUid& aCategory, const TUint aKey, const TInt aValue);
+        void HandlePropertyChangeL(const TUid& aCategory, const TUint aKey, const TDesC8& aValue);
+        void HandlePropertyChangeL(const TUid& aCategory, const TUint aKey, const TDesC& aValue);
+        void HandlePropertyChangeErrorL(const TUid& aCategory, const TUint aKey, TInt aError);
+        
+	private:    // Data
+		
+        /** Array of audio policy categories that radio must not resume after. */
+        RArray<TInt> iNoAutoResumeAudioCategories;
+    
+        /**Observer which will be notified of the call and network state changes*/
+		MFMRadioSystemEventDetectorObserver&  iObserver;
+	
+        /**An array of handlers to Publish & Subscribe interface*/        		
+		RPointerArray<CFMRadioPropertyObserver> iPropertyArray;
+
+		/**Indicator for the network status*/
+		TBool iIsNetworkCoverage;
+		// for tracking currently playing audio clients
+		TInt iNumberOfActiveAudioClients;
+		/** Indicator for Voice UI status. */
+		TBool iIsVoiceUiActive;
+		/** flag for call status */
+		TBool iIsCallActive;
+		/** call status observer */
+		CFMRadioPropertyObserver* iCallStatusObserver;
+        /* timer for audio auto resume */
+        CPeriodic* iAutoResumeTimer;		
+		
+    };
+
+#endif // CFMRADIOSYSTEMEVENTDETECTOR_H
+