/*

* 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        : sipsubscriptionstateheader.h

* Part of     : SIP Codec

* Interface   : SDK API, SIP Codec API

* Version     : SIP/4.0 

*

*/

#ifndef CSIPSUBSCRIPTIONSTATEHEADER_H

#define CSIPSUBSCRIPTIONSTATEHEADER_H

//  INCLUDES

#include "sipparameterheaderbase.h"

// FORWARD DECLARATIONS

class CSIPSubscriptionStateHeaderParams;

// CLASS DECLARATION

/**

* @publishedAll

* @released

*

* Class provides functions for setting and getting SIP "Subscription-State"

* header fields.

*

*  @lib sipcodec.lib

*/

class CSIPSubscriptionStateHeader : public CSIPParameterHeaderBase

	{

	public:	// Constructors and destructor

		/**

		* Constructs a CSIPSubscriptionStateHeader from textual representation 

		* of the header's value part.

		* @param aValue a value part of a "Subscription-State"-header

		* @return a new instance of CSIPSubscriptionStateHeader

		*/

		IMPORT_C static CSIPSubscriptionStateHeader* DecodeL(const TDesC8& aValue);

		/**

		* Creates a new instance of CSIPSubscriptionStateHeader

		* @param aSubStateValue a substate-value value

		* @return a new instance of CSIPSubscriptionStateHeader

		*/

		IMPORT_C static CSIPSubscriptionStateHeader* 

			NewL(const TDesC8& aSubStateValue);

		/**

		* Creates a new instance of CSIPSubscriptionStateHeader 

		* and puts it to CleanupStack

		* @param aSubStateValue a substate-value value

		* @return a new instance of CSIPSubscriptionStateHeader

		*/

		IMPORT_C static CSIPSubscriptionStateHeader* 

			NewLC(const TDesC8& aSubStateValue);

		/**

		* Destructor, deletes the resources of CSIPSubscriptionStateHeader.

		*/

		IMPORT_C ~CSIPSubscriptionStateHeader();

	public: // New functions

		/**

		* Gets the substate-value parameter from the "Subscription-State" header

		* @return the substate-value parameter

		*/

		IMPORT_C const TDesC8& SubStateValue() const;

		/**

		* Sets the substate-value parameter in the "Subscription-State" header; 

		* @param aSubStateValue a substate-value parameter to set

		*/

		IMPORT_C void SetSubStateValueL(const TDesC8& aSubStateValue);

		/**

		* Gets the value of the "expires"-parameter

		* @return "expires"-parameter or KErrNotFound if not present

		*/

		IMPORT_C TInt ExpiresParameter() const;

		/**

		* Sets the "expires"-parameter

		* @pre aExpiresParam >= 0

		* @param aExpiresParam a "expires"-parameter value to set

		*/

		IMPORT_C void SetExpiresParameterL(TInt aExpiresParam);

		/**

		* Gets the value of the "retry-after"-parameter

		* @return "retry-after"-parameter or KErrNotFound if not present

		*/

		IMPORT_C TInt RetryAfterParameter() const;

		/**

		* Sets the "retry-after"-parameter

		* @pre aRetryAfterParam >= 0

		* @param aRetryAfterParam a "retry-after"-parameter value to set

		*/

		IMPORT_C void SetRetryAfterParameterL(TInt aRetryAfterParam);

		/**

		* Constructs an instance of a CSIPSubscriptionStateHeader 

		* from a RReadStream

		* @param aReadStream a stream containing the value of the

		*        externalized object (header name not included). 

		* @return an instance of a CSIPSubscriptionStateHeader

		*/

		IMPORT_C static CSIPHeaderBase* 

			InternalizeValueL(RReadStream& aReadStream);

	public: // From CSIPHeaderBase

		/**

		* From CSIPHeaderBase CloneL

		*/

		IMPORT_C CSIPHeaderBase* CloneL() const;

		/**

		* From CSIPHeaderBase Name

		*/

		IMPORT_C RStringF Name() const;

	public: // From CSIPHeaderBase, for internal use

        /**

        * @internalComponent

        */

		TPreferredPlace PreferredPlaceInMessage() const;

	public: // New functions, for internal use

		static RPointerArray<CSIPHeaderBase> BaseDecodeL(const TDesC8& aValue);

	private: // From CSIPHeaderBase

		void ExternalizeValueL(RWriteStream& aWriteStream) const;

	private: // From CSIPParameterHeaderBase

		HBufC8* ToTextMandatoryPartLC() const;

		void ParseMandatoryPartL(const TDesC8& aMandatoryPart);

		const CSIPParamContainerBase& Params() const;

		CSIPParamContainerBase& Params();

	private: // Constructors

		CSIPSubscriptionStateHeader();

		void ConstructL();

		void ConstructL(const TDesC8& aSubStateValue);

        void ConstructL (const CSIPSubscriptionStateHeader&

            aSubscriptionStateHeader);

	private: // New functions 

		void DoInternalizeValueL(RReadStream& aReadStream);

	private: // Data

		HBufC8* iSubStateValue;

		CSIPSubscriptionStateHeaderParams* iParams;

	private: // For testing purposes

	};

#endif // CSIPSUBSCRIPTIONSTATEHEADER_H

// End of File