1 /*

     2  * Copyright (c) 2008 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:  ?Description

    15  *

    16  */

    17 

    18 #include<apgwgnam.h>

    19 

    20 #include"catasklist.h"

    21 

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

    23     {

    24     CCaTaskList* self = NewLC( aWsSession );

    25     CleanupStack::Pop( self );

    26     return self;

    27     }

    28 

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

    30     {

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

    32     CleanupStack::PushL( self );

    33     self->ConstructL();

    34     return self;

    35     }

    36 

    37 CCaTaskList::CCaTaskList( RWsSession& aWsSession )

    38 : iWs(aWsSession)

    39     {

    40     }

    41 

    42 void CCaTaskList::ConstructL()

    43     {

    44     UpdateListL();

    45     }

    46 

    47 CCaTaskList::~CCaTaskList()

    48     {

    49     iWgs.Close();

    50     }

    51 

    52 void CCaTaskList::UpdateListL()

    53     {

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

    55     }

    56 

    57 

    58 TApaTask CCaTaskList::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 CCaTaskList::IsRootWindowGroup( TInt aWgId ) const

    81     {

    82     TInt count = iWgs.Count();

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

    84         {

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

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

    87         if ( info.iId == aWgId )

    88         	{

    89             return ( info.iParentId <= 0 );

    90         	}

    91         }

    92     return EFalse;

    93     }