/*

* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* which accompanies this distribution, and is available

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* Name        : sipextensionheader.h

* Part of     : SIP Codec

* Interface   : SDK API, SIP Codec API

* Version     : SIP/4.0 

*

*/

#ifndef CSIPEXTENSIONHEADER_H

#define CSIPEXTENSIONHEADER_H

//  INCLUDES

#include "sipheaderbase.h"

// CLASS DECLARATION

/**

* @publishedAll

* @released

*

* The class stores unknown and extension headers that are either not 

* supported by the current SIP codec implementation or not specified in

* current SIP RFC or both.

*

*  @lib sipcodec.lib

*/

class CSIPExtensionHeader : public CSIPHeaderBase

	{

	public:	// Constructors and destructor

		/**

		* Creates a new instance of CSIPExtensionHeader

		* @param aName the full or compact name of the header

		* @param aValue the value of the header

		* @return a new instance of CSIPExtensionHeader

		*/

		IMPORT_C static CSIPExtensionHeader* 

			NewL(const TDesC8& aName, const TDesC8& aValue);

		/**

		* Creates a new instance of CSIPExtensionHeader 

		* and puts it to CleanupStack

		* @param aName the full or compact name of the header

		* @param aValue the value of the header

		* @return a new instance of CSIPExtensionHeader

		*/

		IMPORT_C static CSIPExtensionHeader* 

			NewLC(const TDesC8& aName, const TDesC8& aValue);

		/**

		* Destructor, deletes the resources of CSIPExtensionHeader.

		*/

		IMPORT_C ~CSIPExtensionHeader();

	public: // New functions

		/**

		* Sets the header value

		* @param aValue the header value to be set

		*/

		IMPORT_C void SetValueL(const TDesC8& aValue);

		/**

		* Gets the header value

		* @return the header value

		*/

		IMPORT_C const TDesC8& Value() const;

		/**

		* Constructs an instance of a CSIPExtensionHeader from a RReadStream

		* @param aReadStream a stream containing the value of the

		*        externalized header object (header name not included).

		* @return an instance of a CSIPExtensionHeader

		*/

		IMPORT_C static CSIPExtensionHeader* 

			InternalizeValueL(RReadStream& aReadStream);

	public: // From CSIPHeaderBase

		/**

		* From CSIPHeaderBase CloneL

		*/

		IMPORT_C CSIPHeaderBase* CloneL() const;

		/**

		* From CSIPHeaderBase Name

		*/

		IMPORT_C RStringF Name() const;

		/**

		* From CSIPHeaderBase ToTextValueL

		*/

		IMPORT_C HBufC8* ToTextValueL() const;

		/**

		* From CSIPHeaderBase ExternalizeSupported

		*/

		IMPORT_C TBool ExternalizeSupported() const;

	public: // New functions, for internal use

		void SetNameL(const TDesC8& aName);

	public: // From CSIPHeaderBase, for internal use

        /**

        * @internalComponent

        */	

		TBool IsExtensionHeader() const;

        /**

        * @internalComponent

        */		

		TBool EncodeMultipleToOneLine() const;

        /**

        * @internalComponent

        */		

		TBool MoreThanOneAllowed() const;

        /**

        * @internalComponent

        */		

		TBool HasCompactName() const;

        /**

        * @internalComponent

        */		

		RStringF CompactName() const;

        /**

        * @internalComponent

        */		

		TPreferredPlace PreferredPlaceInMessage() const;

	private: // From CSIPHeaderBase

		void ExternalizeValueL(RWriteStream& aWriteStream) const;

	private: // Constructors

		CSIPExtensionHeader();

		void ConstructL(const TDesC8& aName, const TDesC8& aValue);

		void ConstructL(const CSIPExtensionHeader& aExtensionHeader);

		void DoInternalizeValueL(RReadStream& aReadStream);

	private: // New functions

		TBool CheckValue (const TDesC8& aValue);

	private: // Data

		// data

		RStringF iName;

		HBufC8* iValue;

	private: // For testing purposes

	};

#endif // CSIPEXTENSIONHEADER_H

// End of File