/*

* Copyright (c) 2007 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:           

*       Provides the CAknFepUIInterface methods.

*

*/

#include "aknfepuiinterface.h"

#include "AknFepUiInterfacePlugin.h"

#include <ecom/ecom.h>

void PanicNoImpl()

	{

	_LIT(KReason, "NoFepUiImpl");

	User::Panic(KReason, 0);

	}

const TUid KAvkonPluginUid = { 0x10285839 };

void EComDtorCleanup(TAny* aUid)

	{

	TUid dtor = {(TInt)aUid};

	REComSession::DestroyedImplementation(dtor);

	}

void EComImplCleanup(TAny* aArray)

	{

	RImplInfoPtrArray* array = (RImplInfoPtrArray*) aArray;

	array->ResetAndDestroy();

	}

// factory function	

EXPORT_C CAknFepUIInterface* CAknFepUIInterface::NewL()

	{

	RImplInfoPtrArray impls;

	CleanupStack::PushL(TCleanupItem(EComImplCleanup, &impls));	

	REComSession::ListImplementationsL(TUid::Uid(CFepUiInterfacePlugin::ETypeId), impls);

	// Move Avkon plugin to the back of the list to act as default implementation

	TInt count = impls.Count();

	for (int i=0; i<count-1; i++)

		{

		CImplementationInformation* info = impls[i];

		if (info->ImplementationUid() == KAvkonPluginUid)

			{

			impls.Remove(i);

			// Append will not fail as space has been freed by Remove

			impls.Append(info);

			break;

			}

		}

	// Find the first plugin that says it should be used	

	CAknFepUIInterface* impl = NULL;

	for (int i=0; !impl && i<count; i++)

		{

		TUid dtorUid;

		CFepUiInterfacePlugin* plugin = (CFepUiInterfacePlugin*)REComSession::CreateImplementationL(impls[i]->ImplementationUid(), dtorUid);

		if (plugin->UseThisPlugin())

			{

			CleanupStack::PushL(TCleanupItem(EComDtorCleanup, (TAny*)dtorUid.iUid));

			CleanupStack::PushL(plugin);

			impl = plugin->NewImplL();

			impl->iEcomDtorUid = dtorUid;

			CleanupStack::PopAndDestroy(plugin);

			CleanupStack::Pop();

			}

		else

			{

			delete plugin;

			REComSession::DestroyedImplementation(dtorUid);

			}

		}

	CleanupStack::PopAndDestroy(&impls);

	__ASSERT_ALWAYS(impl, PanicNoImpl());

	return impl;

	}

EXPORT_C CAknFepUIInterface::~CAknFepUIInterface()

	{

	if (iEcomDtorUid.iUid)

		REComSession::DestroyedImplementation(iEcomDtorUid);

	}