// Copyright (c) 2008-2009 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:

//

#include "cupnpelementarray.h"

CUPnPElementArray::CUPnPElementArray()

	{

	}

CUPnPElementArray::~CUPnPElementArray()

	{

	iElements.ResetAndDestroy();

	}

/* The callbacks alongwith the uris which're being received for each request by a control

 * point are retrieved and stored as a UPnPElement

 */

void CUPnPElementArray::InsertElementL( MPnPObserver* aObserver,const TDesC8& aUri )

	{	

	for(TInt i=0;i<iElements.Count();i++)

		{

		CUPnPElement* element= iElements[i];

		const MPnPObserver* observer=element->CallBack();

		/* If the MPnPObserver is already in the Element Array then

		 * append to it and return*/

		if(observer==aObserver)

			{

			element->AppendValueL(aUri);

			return ;

			}

		}

	//Create a new element and append the uri to it	

	CUPnPElement* element = new CUPnPElement(aObserver);

	element->AppendValueL(aUri);

	//Now Append the element to the element array

	iElements.AppendL(element);

	}

/* Tries to retrieve the callback given the uri and NULL if not present

 */

  MPnPObserver* CUPnPElementArray::MatchElement(const TDesC8& aUri)

	{

	TInt subIndex = KErrNotFound;

	for(TInt i=0;i<iElements.Count();i++)

		{

		CUPnPElement* element= iElements[i];

		subIndex=element->MatchValue(aUri);

		if(subIndex != KErrNotFound)

			return element->CallBack();

		}

	return NULL;

	}

/* Removes the uri given and the corresponding element as well if it is the last uri

 */

TInt CUPnPElementArray::RemoveElement(const TDesC8& aUri)

	{

	for(TInt i=0;i<iElements.Count();i++)

		{

		CUPnPElement* element= iElements[i];

		TInt subIndex=element->RemoveValue(aUri);

		if(subIndex != KErrNotFound)

			{

			if(element->UriExists()==EFalse)

				{

				iElements.Remove(i);

				delete element;

				}

			return subIndex;

			}

		}	

	// If the uri does not give any match in the element array

	return KErrNotFound;

	}

/* If any element contains "ssdp:all" then all other elements in the array are

   removed and only one element containing "ssdp:all" remains in the array.Used

   for RegisterNotify use case when a control point registers for all advertisements

   using "ssdp:all". No other uri is required to be registered thereon

 */

void CUPnPElementArray::SsdpAllModificationL( MPnPObserver* aObserver )

	// Returns the count of elements in the element array

	{

	_LIT8(KSsdpAll,"ssdp:all");

	//Create a new element and append the uri to it	

	CUPnPElement* element = new CUPnPElement(aObserver);

	//If unable to append this uri to the element then return directly

	element->AppendValueL( KSsdpAll);

	iElements.ResetAndDestroy();

	//Now Append the element to the element array

	iElements.AppendL(element);

	}