diff -r 25fce757be94 -r e02eb84a14d2 usbclasses/pictbridgeengine/inc/dpsstate.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbclasses/pictbridgeengine/inc/dpsstate.h	Wed Sep 01 12:20:49 2010 +0100
@@ -0,0 +1,179 @@
+/*
+* Copyright (c) 2006, 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:  These classes define the dps states. 
+*
+*/
+
+
+#ifndef DPSSTATE_H
+#define DPSSTATE_H
+
+#include <e32base.h>
+class CDpsStateMachine;
+
+/**
+*   This class is the base classes for all dps state classes.
+*   We follow state design pattern here so the state class defines all
+*   transactions among states as member functions.
+*/
+class MDpsState
+    {
+    public:
+                
+        /**
+        *   Script sent notification
+        */
+        virtual void ScriptSentNotifyL(TBool aReply) = 0;
+        
+        /**
+        *   Script received notification
+        */
+        virtual void ScriptReceivedNotifyL(TBool aReply) = 0;
+        
+        /**
+        *   Error handling of the transaction
+        */
+        virtual void Error(TInt aErr) = 0; 
+    };
+
+/**
+*   Idle state class
+*/
+NONSHARABLE_CLASS(TDpsIdleState) : public MDpsState
+    {
+    public:
+        /**
+        *   Constructor
+        */
+        TDpsIdleState(CDpsStateMachine* aStateMachine);
+    public:
+                
+        /**
+        *   @see MDpsState
+        */
+        void ScriptSentNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */
+        void ScriptReceivedNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */    
+        void Error(TInt aErr);
+
+        
+    private:
+        CDpsStateMachine* iStateMachine;
+    };
+
+/**
+*   Sending Request state class. Device sending request starts form this state
+*/
+NONSHARABLE_CLASS(TDpsSendingReqState) : public MDpsState
+    {
+    public:
+        /**
+        *   Constructor
+        */
+        TDpsSendingReqState(CDpsStateMachine* aStateMachine);
+            
+    public:
+        
+        /**
+        *   @see MDpsState
+        */    
+        void ScriptSentNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */    
+        void ScriptReceivedNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */    
+        void Error(TInt aErr);        
+            
+    private:
+        CDpsStateMachine* iStateMachine;
+    };
+
+/**
+*   Waiting Reply state class (script has been sent)
+*/    
+NONSHARABLE_CLASS(TDpsWaitingRepState) : public MDpsState
+    {
+    public:
+        /**
+        *   Constructor
+        */
+        TDpsWaitingRepState(CDpsStateMachine* aStateMachine);
+            
+    public:
+               
+        /**
+        *   @see MDpsState
+        */    
+        void ScriptSentNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */
+        void ScriptReceivedNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */    
+        void Error(TInt aErr);        
+            
+    private:
+        CDpsStateMachine* iStateMachine;
+    };
+    
+/**
+*   Sending Reply state class. The device starts replying the host request 
+*   in this state.
+*/     
+NONSHARABLE_CLASS(TDpsSendingRepState) : public MDpsState
+    {
+    public:
+        /**
+        *   Constructor
+        */
+        TDpsSendingRepState(CDpsStateMachine* aStateMachine);
+            
+    public:
+          
+        /**
+        *   @see MDpsState
+        */    
+        void ScriptSentNotifyL(TBool aReply);
+         
+        /**
+        *   @see MDpsState
+        */    
+        void ScriptReceivedNotifyL(TBool aReply);
+        
+        /**
+        *   @see MDpsState
+        */    
+        void Error(TInt aErr);
+                    
+    private:
+        CDpsStateMachine* iStateMachine;
+    };
+    
+#endif