/*

* Copyright (c) 2004-2009 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:

* Name        : sipcontactheader.h

* Part of     : SIP Codec

* Interface   : SDK API, SIP Codec API

* Version     : SIP/4.0 

*

*/

#ifndef CSIPCONTACTHEADER_H

#define CSIPCONTACTHEADER_H

//  INCLUDES

#include "sipparameterheaderbase.h"

// FORWARD DECLARATIONS

class CSIPAddress;

class CSIPContactHeaderParams;

// CLASS DECLARATION

/**

* @publishedAll

* @released

*

* Class provides functions for setting and getting SIP "Contact"

* header fields.

*

*  @lib sipcodec.lib

*/

class CSIPContactHeader : public CSIPParameterHeaderBase

	{

	public: // Constructors and destructor

		/**

		* Constructs a CSIPContactHeader from textual representation 

		* of the header's value part.

		* Note that "Contact: *" can be only created using this function.

		* @param aValue a value part of a "Contact"-header

		* @return an array containing 1..n instances of CSIPContactHeader

		*/

		IMPORT_C static RPointerArray<CSIPContactHeader> 

			DecodeL(const TDesC8& aValue);

		/**

		* Creates a new instance of CSIPContactHeader

		* @pre aSIPAddress != 0

		* @param aSIPAddress a name-address, the ownership is transferred 

		* @return a new instance of CSIPContactHeader

		*/

		IMPORT_C static CSIPContactHeader* NewL(CSIPAddress* aSIPAddress);

		/**

		* Creates a new instance of CSIPContactHeader and puts it to CleanupStack

		* @pre aSIPAddress != 0

		* @param aSIPAddress a name-address, the ownership is transferred 

		* @return a new instance of CSIPContactHeader

		*/

		IMPORT_C static CSIPContactHeader* NewLC(CSIPAddress* aSIPAddress);

		/**

		* Destructor, deletes the resources of CSIPContactHeader.

		*/

		IMPORT_C ~CSIPContactHeader();

	public: // New functions

		/**

		* Compares this object to another instance of CSIPContactHeader

		* @param aHeader a CSIPContactHeader header to compare to

		* @return ETrue if the objects are equal otherwise EFalse

		*/

		IMPORT_C TBool operator==(const CSIPContactHeader& aHeader) const;

		/**

		* Checks if the address is set to a STAR ("*")

		* @return ETrue, if the address is a "*" otherwise EFalse

		*/

		IMPORT_C TBool Star() const;

		/**

		* Gets the value of the "expires"-parameter

		* @return the "expires"-parameter, or 

		*         KErrNotFound if the parameter is 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 "q"-parameter

		* @pre Star() == EFalse

		* @return the "q"-parameter value, 

		*         or zero if the parameter is not present.

		*/

		IMPORT_C TReal QParameter() const;

		/**

		* Sets the "q"-parameter value in the "Contact" header

		* @pre Star() == EFalse

		* @param aQValue a "q"-parameter value to set

		*/

		IMPORT_C void SetQParameterL(TReal aQValue);

		/**

		* Gets the name-address as const

		* @return name-address or 0 if not present

		*         The ownership is NOT transferred.

		*/

		IMPORT_C const CSIPAddress* SIPAddress() const;

		/**

		* Gets the name-address

		* @return name-address or 0 if not present

		*         The ownership is NOT transferred.

		*/

		IMPORT_C CSIPAddress* SIPAddress();

		/**

		* Sets the name-address

		* @pre Star() == EFalse

		* @pre aSIPAddress != 0

		* @param aSIPAddress a name-address to set, the ownership is transferred

		*/

		IMPORT_C void SetSIPAddressL(CSIPAddress* aSIPAddress);

		/**

		* Constructs an instance of a CSIPContactHeader from a RReadStream

		* @param aReadStream a stream containing the value of the

		*        externalized object (header name not included). 

		* @return an instance of a CSIPContactHeader

		*/

		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: //New Function

		/**

		* Removes the "expires"-parameter

		*/

		IMPORT_C void RemoveExpiresParam();

	public: // From CSIPHeaderBase, for internal use

        /**

        * @internalComponent

        */

		TBool MoreThanOneAllowed() const;

        /**

        * @internalComponent

        */		

		TBool HasCompactName() const;

        /**

        * @internalComponent

        */		

		RStringF CompactName() const;

        /**

        * @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

		TBool ParamInsertionAllowed() const;

		HBufC8* ToTextMandatoryPartLC() const;

		void ParseMandatoryPartL(const TDesC8& aMandatoryPart);

		const CSIPParamContainerBase& Params() const;

		CSIPParamContainerBase& Params();

	private: // Constructors

		CSIPContactHeader(TBool aIsStar=EFalse);

		void ConstructL();

		void ConstructL(CSIPAddress* aSIPAddress);

		void ConstructL(const CSIPContactHeader& aContactHeader);

	private: // New functions 

		void DoInternalizeValueL(RReadStream& aReadStream);

	private: // Data

		CSIPAddress* iSIPAddress;

		CSIPContactHeaderParams* iParams;

		TBool iIsStar;

	private: // For testing purposes

#ifdef CPPUNIT_TEST	

		friend class CSIPContactHeaderTest;

#endif

	};

#endif // CSIPCONTACTHEADER_H

// End of File