/*

 * 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