/*

* Copyright (c) 2002 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 "aknapp.h"

#include <eikenv.h>

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <uikon/eikenvinterface.h>

#endif

#include <apgtask.h>

#include <apgwgnam.h>

#include <AknServerApp.h>

#include "AknTaskList.h"

#include <aknenv.h>

#include <akntranseffect.h> // for Transition effect enumerations

#include <UikonInternalPSKeys.h>

#include <e32property.h>

#include <AknSgcc.h>

LOCAL_C TBool IsInHiddenList(const TUid& aUid)

	{

	TBuf16<2 * KMaxHiddenApps> lst;

	if(KErrNone != RProperty::Get(KPSUidUikon, KUikAppHiddenList, lst))

		return EFalse;

	for(TInt i = 0; i < KMaxHiddenApps; i++)

		{

		const TInt bytePos = i << 1;

		const TUint32 uid = (lst[bytePos] << 16) | lst[bytePos + 1];

		if(aUid.iUid == uid)

			return ETrue;

		if(uid == 0) //end of list

			return EFalse;

		}

	return EFalse;

	}

EXPORT_C void CAknApplication::PreDocConstructL()

	{

	CEikonEnv* env = CEikonEnv::Static();

	if (!env->StartedAsServerApp() && !env->EikAppUi())

		{

		// Only run this check for top level (non embedded) apps.

		RWsSession& ws = env->WsSession();

		const TInt myWg = env->RootWin().Identifier();

		TInt wgId = 0;

		// set this apps UID in the window group name to remove the gap between this check and it being set in UpdateTaskNameL()

		TUid uid(AppDllUid());

		CApaWindowGroupName* wgName = CApaWindowGroupName::NewLC(ws, myWg);

		wgName->SetAppUid(uid);

		wgName->SetWindowGroupName(env->RootWin());

		// Use a CAknTaskList to check for root instances of apps

		CAknTaskList* taskList = CAknTaskList::NewLC(ws);

		TBool foundInstance = EFalse;

		// Look for another instance of this app

		while (wgId>=0)

			{

			if (wgId && wgId != myWg && taskList->IsRootWindowGroup(wgId))

				{	// found another app, switch to it & die

				/*

				TApaTask other(ws);

				other.SetWgId(wgId);

				other.BringToForeground();

				CBaActiveScheduler::Exit();

				*/

				foundInstance = ETrue;

				break;

				}

			CApaWindowGroupName::FindByAppUid(uid,ws,wgId);

			}

		if(!foundInstance)

			{

			//

            // Application launched with commands EApaCommandBackground or 

            // EApaCommandRunWithoutViews has non-zero ordinal position for their

            // window group.

            // For such applications transition effects on application start

            // should not be used.

            // 

            TInt ordPosition = env->RootWin().OrdinalPosition();

			if (!ordPosition)

			    {

			    iAvkonEnv->TransitionEvent(AknTransEffect::EApplicationStart, AppDllUid());    

			    }			            

			else

			    {

			    iAvkonEnv->TransitionEvent( AknTransEffect::EAppStartupBackground, AppDllUid() );

			    }

			}

        else

            {

            // If application is launched to background, then do not bring application to

            // foreground. This needs to be deduced using ordinal position of root window

            // as command line parameters are not available to this method. With this

            // approach, there is small chance for error, but it's considered to be so

            // rare that this is acceptable. For example, otherwise applications launched

            // to background during startup might cause foreground application changes.

            const TInt ordPosition = env->RootWin().OrdinalPosition();

            if ( !ordPosition )

                {

                if(wgName->Hidden() || IsInHiddenList(AppDllUid()))

                    {

                    iAvkonEnv->TransitionEvent(AknTransEffect::EApplicationStartSwitch, AppDllUid());

                    }

                CAknSgcClient::MoveApp(wgId, ESgcMoveAppToForeground);

                }

            CBaActiveScheduler::Exit();

            }

        CleanupStack::PopAndDestroy(taskList); //taskList        

        CleanupStack::PopAndDestroy(wgName);

        }

	if(env->StartedAsServerApp())

		{

		// Start embedded

		iAvkonEnv->TransitionEvent(AknTransEffect::EEmbeddedApplicationStart, AppDllUid());

		}

	CEikApplication::PreDocConstructL();

	}

EXPORT_C CDictionaryStore* CAknApplication::OpenIniFileLC(RFs& /*aFs*/) const

	{

	// By default, ini files are not supported by SERIES60 applications.

	// If you want to use an ini file, either override this function to base call

	// CEikApplication::OpenIniFileLC, or call it directly.

	User::Leave(KErrNotSupported);

	return NULL;

	}

EXPORT_C void CAknApplication::NewAppServerL(CApaAppServer*& aAppServer)

	{

	aAppServer = new(ELeave) CAknAppServer;

	}