/*

* Copyright (c) 2005-2009 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          : CSigCompMgr.h

* Part of       : Dialogs

* Version       : SIP/4.0 

*

*/

/**

 @internalComponent

*/

#ifndef CSIGCOMPMGR_H

#define CSIGCOMPMGR_H

#include <e32base.h>

#include <stringpool.h>

#include "_sipcodecdefs.h"

class MSigComp;

class CURIContainer;

class CSIPURI;

class CSIPRouteHeader;

/**

 * @brief Class for using and unusing signalling compression

 *

 */

class CSigCompMgr : public CBase

	{

public:

	/**

	 * Creates a new CSigCompMgr instance

	 * @returns a new instance of CSigCompMgr

	 */

    static CSigCompMgr* NewL (TUint32 aIapId,

                              MSigComp& aSigComp);

	/**

	 * Creates a new CSigCompMgr instance and pushes it to CleanupStack

	 * @returns a new instance of CSigCompMgr

	 */

    static CSigCompMgr* NewLC (TUint32 aIapId,

                               MSigComp& aSigComp);

	/**

	 * Destructor

	 */

    ~CSigCompMgr();

	/**

	 * Updates the compression information. This might lead into

     * deleting a used compartment or/and creation of a new one. 

	 * @param aRemoteTarget the URI in the remote Contact

     * @param aRouteSet the dialog's current Route-set.

	 * @param aLocalTarget the local target of the dialog.

	 *        If not zero and compression is used contains 

	 *        on return comp=sigcomp parameter.

	 *        If not zero and compression is not used

	 *        comp=sigcomp parameter is removed.

     */

    void UpdateL (const CURIContainer& aRemoteTarget,

                  const RPointerArray<CSIPRouteHeader>& aRouteSet,

				  CSIPURI& aLocalTarget,

				  TBool aUpdateLocalTarget=ETrue);

	/**

	 * Gets the current compartment id

	 * @returns zero if no compartment is used. Otherwise the compartment id.

	 */	

	TUint32 CompartmentId() const;

private:

	CSigCompMgr (TUint32 aIapId, MSigComp& aSigComp);

    TBool HasSigCompParameter (const CSIPURI& aURI) const;

    void UpdateL (const CSIPURI& aURI);

private: // Data

    TUint32 iIapId;

    MSigComp& iSigComp;

	RStringF iCompParamName;

	RStringF iSigCompValue;

    TUint32 iCompartmentId;

private: // For testing purposes

	UNIT_TEST(CSigCompMgrTest)

	};

#endif // CSIGCOMPMGR_H

// End of File