--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtengines/videoteleng/Inc/State/CVtEngStateManager.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,143 @@
+/*
+* 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:  State manager for session and audio routing states.
+*
+*/
+
+
+
+#ifndef CVTENGSTATEMANAGER_H
+#define CVTENGSTATEMANAGER_H
+
+//  INCLUDES
+#include <e32base.h>
+#include "vtengcommands.h"
+#include "MVtEngSessionInfo.h"
+// FORWARD DECLARATIONS
+class CVtEngStateBase;
+class CVtEngHandlerContainer;
+class CVtEngEventManager;
+class CVtEngOperation;
+
+// CLASS DECLARATION
+
+/**
+*  Owner of engine states. Delegates update request
+*  to active state when requested. Provides method
+*  to enquire command availability in current state.
+*
+*  @lib videoteleng
+*  @since 2.6
+*/
+NONSHARABLE_CLASS( CVtEngStateManager ): public CBase
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        */
+        static CVtEngStateManager* NewL(
+            CVtEngHandlerContainer& aHandlers,
+            CVtEngEventManager& aEventManager );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CVtEngStateManager();
+
+    public: // New functions
+        
+        /**
+        * Requests updates for current state.        
+        */
+        void Update( );
+
+        /**
+        * Checks if a command is possible in current state
+        * @param aCommandId command to check
+        * @return ETrue if command can be performed
+        */
+        TBool IsCommandPossible( 
+            const TVtEngCommandId aCommandId ) const;
+
+        /**
+        * Sets new session state.
+        * @param aNewState new session state
+        */
+        void SetState( CVtEngStateBase& aNewState );
+
+        /**
+        * Passes an operation to current state for
+        * handling.
+        * @param aOp operation to be handled
+        * @return ETrue if operation handled
+        */
+        TBool HandleOperationL( CVtEngOperation& aOp );
+
+        /**
+        * Previous session state.
+        */
+        MVtEngSessionInfo::TSessionState PreviousSessionState() const;
+
+        /**
+        * Current session state.
+        */
+        MVtEngSessionInfo::TSessionState SessionState() const;
+
+        /**
+        * Returns handler container.
+        * @return handler container
+        */
+        inline CVtEngHandlerContainer& Handlers();
+
+        /**
+        * Returns event manager.
+        * @return event manager
+        */
+        inline CVtEngEventManager& EventManager();
+
+    private:
+
+        /**
+        * C++ constructor.
+        */
+        CVtEngStateManager( 
+            CVtEngHandlerContainer& aHandlers,
+            CVtEngEventManager& aEventManager );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+
+    private:    // Data
+        // Previous session state
+        MVtEngSessionInfo::TSessionState iPreviousSessionState;
+
+        // Current session state
+        CVtEngStateBase*        iSessionState;
+         
+        // Handler container
+        CVtEngHandlerContainer& iHandlers;
+
+        // Event manager
+        CVtEngEventManager&     iEventManager;
+
+    };
+
+#include    "CVtEngStateManager.inl"
+
+#endif      // CVTENGSTATEMANAGER_H   
+            
+// End of File