1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #include <apgwgnam.h>

    19 

    20 #include "menutasklist.h"

    21 

    22 CMenuTaskList* CMenuTaskList::NewL(RWsSession& aWsSession)

    23     {

    24     CMenuTaskList* self = NewLC(aWsSession);

    25     CleanupStack::Pop(self);

    26     return self;

    27     }

    28 

    29 CMenuTaskList* CMenuTaskList::NewLC(RWsSession& aWsSession)

    30     {

    31     CMenuTaskList* self = new(ELeave) CMenuTaskList(aWsSession);

    32     CleanupStack::PushL(self);

    33     self->ConstructL();

    34     return self;

    35     }

    36 

    37 CMenuTaskList::CMenuTaskList(RWsSession& aWsSession)

    38 : iWs(aWsSession)

    39     {

    40     }

    41 

    42 void CMenuTaskList::ConstructL()

    43     {

    44     UpdateListL();

    45     }

    46 

    47 CMenuTaskList::~CMenuTaskList()

    48     {

    49     iWgs.Close();

    50     }

    51 

    52 void CMenuTaskList::UpdateListL()

    53     {

    54     User::LeaveIfError(iWs.WindowGroupList(&iWgs));

    55     }

    56 

    57 

    58 TApaTask CMenuTaskList::FindRootApp(TUid aAppUid) const

    59     {

    60     TApaTask task(iWs);

    61     task.SetWgId(0);        // initialise task to non-existant task

    62     // wgId = 0 tells FindAppByUid to start looking for apps

    63     TInt wgId=0;

    64     FOREVER

    65         {

    66         CApaWindowGroupName::FindByAppUid(aAppUid, iWs, wgId);

    67         // KErrNotFound means that no more apps can be found

    68         if (wgId == KErrNotFound)

    69             break;

    70         if (IsRootWindowGroup(wgId))

    71             {

    72             // Found a root wg with the right app UID, return it.

    73             task.SetWgId(wgId);

    74             break;

    75             }

    76         }

    77     return task;

    78     }

    79 

    80 TBool CMenuTaskList::IsRootWindowGroup(TInt aWgId) const

    81     {

    82     TInt count = iWgs.Count();

    83     for (TInt ii=0; ii<count; ii++)

    84         {

    85         const RWsSession::TWindowGroupChainInfo& info = iWgs[ii];

    86         // find the window group id and check that it has no parent

    87         if (info.iId == aWgId)

    88             return (info.iParentId <= 0);

    89         }

    90     return EFalse;

    91     }