--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mtpdataproviders/mtppictbridgedp/pictbridgeengine/inc/dpstransaction.h	Fri Jun 11 14:27:06 2010 +0300
@@ -0,0 +1,192 @@
+/*
+* 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:  This class creates and parses dps operations. 
+*
+*/
+
+
+#ifndef DPSTRANSACTION_H
+#define DPSTRANSACTION_H
+
+#include <e32base.h>
+#include "dpsdefs.h"
+#include "dpsoperation.h"
+
+class 	CDpsFile;
+class 	CDpsEngine;
+class   CDpsXmlGenerator;
+class	CDpsXmlParser;
+class 	CDpsScriptSender;
+class   TDpsVersion;
+class   CDpsStateMachine;
+class   TMDpsOperation;
+
+/**
+*   This class creates and parses dps operation (request and reply)
+*/
+NONSHARABLE_CLASS(CDpsTransaction) : public CBase
+    {
+    public:
+        /**
+        *   Two phase constructor
+        *   
+        *   @param iOperator the pointer to dps operation object
+        *   @return the dps transaction instance
+        */
+        static CDpsTransaction* NewL(CDpsStateMachine* iOperator);    
+
+        /**
+        *   Destructor
+        */        							 
+        ~CDpsTransaction();
+        
+    public:
+        /**
+        *   Creates the dps operation request
+        *   @param aParam the dps operation parameters
+        */
+    	void CreateRequestL(TMDpsOperation* aOperation);
+    	
+    	/**
+    	*   Parses dps operation script
+    	*   @param aReply if the script is the reply from the host
+    	*   aReply is ETrue, otherwise the script must be the request
+    	*   from the device and aReply is EFalse
+    	*/
+    	void ParseScriptL(TBool aReply);
+    	
+    	/**
+    	*   @return ETrue if the script is the reply from the host,
+    	*   EFalse if the script is the request from the host
+    	*/
+    	inline TBool IsReply();
+    	
+    	/**
+    	*   @return the CDpsXmlParser object
+    	*/
+    	inline CDpsXmlParser* Parser();
+    	    
+    	/**
+    	*   @return the CDpsXmlGenerator object
+    	*/
+    	inline CDpsXmlGenerator* Generator();    
+    	    
+    	/**
+    	*   @return the CDpsEngine object
+    	*/    
+        inline CDpsEngine* Engine();
+    	
+    	    					 
+		/**
+    	*   Converts the version in descriptor tpye to TDpsVersion type
+    	*   @param aParser the version in descriptor 
+    	*   @param aVersoin the version in TDpsVersion and will be returned
+    	*   @return KErrNone if OK, other system error if failed
+    	*/        
+        TInt ConvertVersion(TLex8& aParser, TDpsVersion& aVersion);    
+        
+        /**
+        *   @return CDpsStateMachine pointer to dps state machine object
+        */
+        inline CDpsStateMachine* Operator();
+        
+        /**
+        *   Parses the string of percentage to integer
+        *   @param aPer the string of percentage to be parsed
+        *   @return TInt the percentage in integer
+        */    			
+        TInt ParsePercentage(const TDes8& aPer);
+        
+        /**
+        *   @return the error of result in integer
+        */
+        inline TInt ResultErr();
+                    
+            
+        /**
+        *   @return CDpsFile pointer to dps file object
+        */
+        inline CDpsFile* FileHandle();
+        
+        /**
+        *
+        */
+        void HandleHostRequestError(TInt aErr);
+                    
+    private:
+        /**
+        *   Default constructor
+        *   
+        *   @param iOperator the pointer to the dps operator 
+        */	
+    	CDpsTransaction(CDpsStateMachine* iOperator);    
+    	
+    	/**
+    	*   Second phase constructor. 
+    	*/
+    	void ConstructL();
+    	
+    	/**
+    	*   Creates the dps event reply.
+    	*   @param aArguments dps event arguments
+    	*   @param aResult the result of the reply. See Dps spec for
+    	*   detail result value
+    	*/
+    	void CreateEventReplyL(TDpsEvent aEvent, const TDpsResult& aResult);
+    	
+    	/**
+    	*   Creates the dps request reply based on host dps request.
+    	*   There is only one dps request from host (others are from device) -
+    	*   GetFileID
+    	*   @param aArgs the dps argument from the dps xml script
+    	*   @param aResult the reply result to be filling to the dps xml script
+    	*/
+    	void CreateRequestReplyL(const TDpsArgArray& aArgs, 
+                                 const TDpsResult& result);
+        
+        /**
+        *   Removes the unprintable chars (LF, CR, TAB and spaces) between 
+        *   two XML attributes. It seems
+        *   sybmian XML framework does filter out these character even though
+        *   they are not belong to the attribute. Some printers (Cannon) send
+        *   Dps request (XML script) in human readable format, e.g. including
+        *   LF, CR and spaces among XML attributes.
+        *   @param aScript the XML script to be filtered out
+        */
+    	void Filter(TDes8& aScript);
+    	
+    	/**
+    	*   Changes the file path for GetFileID request
+    	*
+    	*/
+    	void SubstitutePath(TDes8& aPath);
+    	
+    private:
+        
+    	// the pointer to dps operator object
+    	// not owned by this class
+        CDpsStateMachine* iOperator;
+        // the pointer to xml generator object, owned by this class
+        CDpsXmlGenerator *iXmlGen;
+        // the pointer to xml parser object, owned by this class
+        CDpsXmlParser *iXmlPar; 
+        // the pointer to file generator object, owned by this class
+        CDpsFile *iFile;
+                
+        // the current parsed script is reply or request
+        TBool iReply;  
+    };
+
+#include "dpstransaction.inl"
+#endif