diff -r 000000000000 -r f979ecb2b13e calendarui/controller/inc/calenstatemachine.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/calendarui/controller/inc/calenstatemachine.h	Tue Feb 02 10:12:19 2010 +0200
@@ -0,0 +1,131 @@
+/*
+* Copyright (c) 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:  Calendar state machine
+*
+*/
+
+
+#ifndef CALENSTATEMACHINE_H
+#define CALENSTATEMACHINE_H
+
+// INCLUDES
+#include <e32base.h>
+#include <e32hashtab.h>
+#include <calencommandhandler.h>
+#include <calennotificationhandler.h>
+#include "calenhashfunctions.inl"       // HashFunctions 
+
+class CCalenState;
+class CCalenController;
+
+// CLASS DEFINITIONS
+/**
+ * 
+ */
+class CCalenStateMachine : public CBase,
+                           public MCalenNotificationHandler
+    {
+	public:  // Enumerations
+	    enum TCalenStateIndex
+            {
+            // If you change the array order or add/remove items,
+            // update CCalenStateMachine::ConstructL too.
+	        ECalenIdleState,
+	        ECalenPopulationState,
+	        ECalenBackgroundState,
+	        ECalenViewingState,
+	        ECalenEditingState,
+	        ECalenDeletingState,
+	        ECalenPrintingState,
+	        ECalenSendingState,
+	        ECalenSettingsState,
+	        ECalenHelpState,
+	        ECalenExitingState,
+	        ECalenMapState,
+	        ECalenAttachmentState,
+			ECalenAlarmState,
+	        KCalenLastState  // Must be last
+	        };
+
+    public:  // Construction and destruction
+        /**
+         * Symbian 1st phase constructor
+         */
+        static CCalenStateMachine* NewL( CCalenController& aController );
+        
+        /**
+         * Destructor
+         */
+        virtual ~CCalenStateMachine();
+
+        TBool HandleCommandL( const TCalenCommand& aCommand );
+	
+	public: // from MCalenNotificationHandler
+		
+		/**
+		 * Handles Notifications 
+ 		 */
+        void HandleNotification(const TCalenNotification aNotification );
+
+    private:  // Construction and destruction
+        
+        /**
+         * C++ constructor
+         */
+        CCalenStateMachine( CCalenController& aController );
+        
+        /**
+         * Symbian 2nd phase constructor
+         */
+        void ConstructL();
+	
+	private: 
+	
+		/**
+         * Interface to cancel the previous command
+         */
+		void CancelPreviousCmd();
+		
+		/**
+         * Interface to get the current state
+         */
+		TCalenStateIndex GetCurrentState();
+		
+		/**
+         * Interface to set the current state
+         */
+		void SetCurrentState(const TCalenStateIndex& aState);
+		
+		/**
+         * Interface to set the previous state
+         */
+		void SetCurrentPreviousState(const TCalenStateIndex& aState);
+		
+		/**
+		 * Interface for activating the current state
+		 */
+		void ActivateCurrentStateL();
+    
+    private:
+    	
+    	friend class CCalenState;
+        CCalenController& iController;
+        RPointerArray<CCalenState> iStates;
+        TCalenStateIndex iCurrentState;
+        RHashSet<TCalenNotification> iOutstandingNotifications;
+    };
+
+#endif // CALENSTATEMACHINE_H
+
+// End of file