// Copyright (c) 2001-2009 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:

//

#ifndef __OBEXHEADERLIST_H__

#define __OBEXHEADERLIST_H__

#include <e32std.h> 

#include <e32base.h>    //CBase 

//forward declaration

class RReadStream;

class RWriteStream;

class CObexHeader;

class CObexBaseObject;

class CObexServerSendOperation;

class CMsvAttachment;

const TUid KUidObexHeaders = {0x10204282};

class CObexHeaderList : public CBase

/**

Encapsulates and owns a list of CObexHeader objects.

Public users of this class can add CObexHeader objects 

@publishedAll

@released

*/

	{

public:

	/*

    It provides functionalities for its friend classes to internalize and 

    externalize itself from a CMsvStore stream, and add all its contained 

    CObexHeader objects to a CObexBaseObject, as well as two general list

    functions to return the number of objects it contained and a contained

    object at a specified index into the list.

    */  

	friend class CObexServerSendOperation;		// requires the use of 'AddHeadersToBaseObjectL'

	/**

	 * Factory function to return a new CObexHeaderList.

	 @return New CObexHeaderList object 

	 */

	IMPORT_C static CObexHeaderList* NewL();

	/**

	 * Factory function to return a new CObexHeaderList and leave it on the 

	 * cleanup stack.

	 @return New CObexHeaderList object 

	 */

	IMPORT_C static CObexHeaderList* NewLC();

	/**

	 * Destructor which frees all allocated memory with the list.

	 */

    IMPORT_C ~CObexHeaderList();

    /**

	 * Add a CObexHeader object to the list. The CObexHeader object added 

	 * should have its attribute, header ID and header value set before

	 * it is added to the list. CObexHeaderlist will not change these

	 * values of its contained CObexHeader objects

	 * @param  aHeader Pointer to a constant CObexHeader object

	 *  

	 * @return KErrNone, if the operation is successful, otherwise

	 *         one of the system wide error codes  

	 */

	IMPORT_C TInt AddHeader(const CObexHeader*  aHeader);

	IMPORT_C void ExportToAttachmentL(CMsvAttachment& aAttachment) const;

	IMPORT_C void ImportFromAttachmentL(CMsvAttachment& aAttachment);

	IMPORT_C void ExternalizeL(RWriteStream& aWriteStream) const;

	IMPORT_C void InternalizeL(RReadStream& aReadStream);

protected:

    /**

	 * Add all the CObexHeader objects contained in a list to a 

	 * CObexBaseObject.

	 *

	 *

	 * @param aObexBaseObj CObexBaseObject to add the objects to

	 *  

	 * @leave Error System wide error code 

	 * 

	 */

    IMPORT_C void AddHeadersToBaseObjectL(CObexBaseObject& aObexBaseObj);

	//General list processing functions

    /**

	 * Return the number of CObexHeader object pointers contained in the list.

	 *

	 * 

	 * @return The number of CObexHeader object pointers in the list

	 */

	IMPORT_C TInt Count() const;

	/**

	 * Get a non constant reference to the CObexHeader object pointer at 

	 * position aPos into the list.

	 *

	 *

	 * @param aPos A list index specifying the CObexHeader object pointer to 

	 *        be returned

	 *  

	 * @leave KErrArgument aPos is out of range

	 * @leave KErrNotFound The list is empty

	 *        

	 * @return A non constant reference to the CObexHeader object 

	 *         pointer

	 */

	IMPORT_C CObexHeader*& ObexHeaderL(TInt aPos); 

private:

	/**

	 * Leaving constructor function used in 2 phase construction in NewLC()

	 */

	void ConstructL();

    /**

	 *  Constructor function used in 2 phase construction in NewLC()

	 */

	CObexHeaderList();

private:

	RPointerArray<CObexHeader>*	iObexHeaders;

	};

#endif	// __OBEXHEADERLIST_H__