vtengines/videoteleng/Inc/Base/CVtEngEventManager.h
changeset 0 ed9695c8bcbe
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Inc/Base/CVtEngEventManager.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,119 @@
+/*
+* 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:  Event manager 
+*
+*/
+
+
+
+#ifndef CVTENGEVENTMANAGER_H
+#define CVTENGEVENTMANAGER_H
+
+//  INCLUDES
+#include <e32base.h>
+#include "VtEngEvents.h"
+
+// FORWARD DECLARATIONS
+class MVtEngEventObserver;
+
+// CLASS DECLARATION
+
+/**
+*  This class is responsible for notifying client
+*  on engine events.
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngEventManager ) : public CActive
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        */
+        static CVtEngEventManager* NewL( 
+            MVtEngEventObserver& aEventObserver );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CVtEngEventManager();
+
+    public: // New functions
+        
+        /**
+        * Notifies client on session state change.
+        */
+        void SessionStateChanged();
+
+        /**
+        * Notifies event to observer.
+        * @param aEvent event
+        */
+        static void NotifyEvent( const TInt aEvent );
+        
+        void AddObserverL( MVtEngEventObserver* aObserver );
+        
+        void RemoveObserver( const MVtEngEventObserver* aObserver );
+
+    private: // from CActive
+
+        void RunL();
+
+        void DoCancel();
+
+    private:
+
+        /**
+        * Notifies event to observer
+        */
+        void DoNotifyEvent( const TInt aEvent );
+
+        TBool QueueAsyncEvent( const TInt aEvent );
+        
+        /**
+        * Queue event and signal AO.
+        * @param aEvent Asynchronous event to be signalled.
+        */        
+        void QueueAndSignal( const TInt aEvent );
+
+        /**
+        * Signals AO.
+        */
+        void Signal();
+
+    private:
+
+        /**
+        * C++ default constructor.
+        */
+        CVtEngEventManager();
+        
+        // 2nd phase constructor
+        void ConstructL( MVtEngEventObserver& aEventObserver );
+
+    private:     // Data
+        
+        RPointerArray<MVtEngEventObserver> iObservers;
+        
+        // Asynchronous events are stored in this array and 
+        // executed in order
+        CArrayFixFlat< TInt >*  iEventQueue;
+
+    };
+
+#endif      // CVTENGEVENTMANAGER_H
+            
+// End of File