1 /*

     2 * Copyright (c) 2006-2007 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:  Background task for creating views.

    15 *

    16 */

    17 

    18 

    19 #include "pslnidletaskcreateviews.h"

    20 #include "PslnUi.h"

    21 #include "PslnConst.h"

    22 #include "PslnModel.h"

    23 

    24 // First step is to create tabgroup.

    25 const TInt KPslnCreateTabs = 0;

    26 // Second step is to create parts of the model.

    27 const TInt KPslnFullUpdateModel = 1;

    28 // Third  step is to create general theme view.

    29 const TInt KPslnCreateGeneralView = 2;

    30 // Fourth step is to create wallpaper view.

    31 const TInt KPslnCreateWallpaperView = 3;

    32 // Fifth (and final) step is to create screensaver view.

    33 const TInt KPslnCreateScreensaverView = 4;

    34 

    35 // ---------------------------------------------------------------------------

    36 // C++ constructor can NOT contain any code, that might leave.

    37 // ---------------------------------------------------------------------------

    38 //

    39 CPslnIdleTaskCreateViews::CPslnIdleTaskCreateViews( CPslnUi* aPslnUi ) :

    40     iPslnUi( aPslnUi ), iDone( EFalse ), iIdleStep( KPslnCreateTabs )

    41     {

    42     }

    43 

    44 // -----------------------------------------------------------------------------

    45 // Two-phased constructor.

    46 // -----------------------------------------------------------------------------

    47 //

    48 CPslnIdleTaskCreateViews* CPslnIdleTaskCreateViews::NewL( CPslnUi* aPslnUi )

    49     {

    50     CPslnIdleTaskCreateViews* self =

    51         new( ELeave ) CPslnIdleTaskCreateViews( aPslnUi );

    52 

    53     CleanupStack::PushL( self );

    54     self->ConstructL();

    55     CleanupStack::Pop( self );

    56     return self;

    57     }

    58 

    59 // -----------------------------------------------------------------------------

    60 // Symbian 2nd phase constructor can leave.

    61 // -----------------------------------------------------------------------------

    62 //

    63 void CPslnIdleTaskCreateViews::ConstructL()

    64     {

    65     iIdleTask = CIdle::NewL( CActive::EPriorityIdle );

    66     iIdleTask->Start( TCallBack( DoHandleIdleTimeL, this ) );

    67     }

    68 

    69 // Destructor

    70 CPslnIdleTaskCreateViews::~CPslnIdleTaskCreateViews()

    71     {

    72     if ( iIdleTask )

    73         {

    74         iIdleTask->Cancel();

    75         }

    76     delete iIdleTask;

    77     }

    78 

    79 // ---------------------------------------------------------------------------

    80 // Informs when task is finished.

    81 // ---------------------------------------------------------------------------

    82 //

    83 TBool CPslnIdleTaskCreateViews::IsFinished() const

    84     {

    85     return iDone;

    86     }

    87 

    88 // -----------------------------------------------------------------------------

    89 // Callback function when application is idle.

    90 // -----------------------------------------------------------------------------

    91 //

    92 TInt CPslnIdleTaskCreateViews::DoHandleIdleTimeL( TAny* aAny )

    93     {

    94     static_cast< CPslnIdleTaskCreateViews* >( aAny )->HandleIdleTimeL();

    95     return KErrNone;

    96     }

    97 

    98 // -----------------------------------------------------------------------------

    99 // Handles idle time. With each step a new view is created.

   100 // -----------------------------------------------------------------------------

   101 //

   102 void CPslnIdleTaskCreateViews::HandleIdleTimeL()

   103     {

   104     if ( !IsFinished() )

   105         {

   106         TUid viewToCreate = KPslnGeneralView; //just initialise

   107         switch( iIdleStep )

   108             {

   109             case KPslnCreateTabs:

   110                 iPslnUi->ConstructTabGroupL();

   111                 break;

   112             case KPslnFullUpdateModel:

   113                 if ( iPslnUi->Model() &&

   114                      iPslnUi->Model()->ActiveSkinIndex() == KErrNotFound )

   115                     {

   116                     iPslnUi->Model()->PerformCompleteUpdateL();

   117                     }

   118                 break;

   119             case KPslnCreateGeneralView:

   120                 viewToCreate = KPslnGeneralView;

   121                 break;

   122             case KPslnCreateWallpaperView:

   123                 viewToCreate = KPslnWallpaperView;

   124                 break;

   125             case KPslnCreateScreensaverView:

   126                 viewToCreate = KPslnScreenSaverView;

   127                 iDone = ETrue;

   128                 break;

   129             default:

   130                 User::Leave( KErrArgument );

   131                 break;

   132             }

   133         if ( iIdleStep != KPslnCreateTabs && iIdleStep != KPslnFullUpdateModel )

   134             {

   135             iPslnUi->CreateViewL( viewToCreate );

   136             }

   137         iIdleStep++;

   138         if ( !iDone )

   139             {

   140             if ( iIdleTask && !iIdleTask->IsActive() )

   141                 {

   142                 iIdleTask->Start( TCallBack( DoHandleIdleTimeL, this ) );

   143                 }

   144             }

   145         }

   146     }

   147 

   148 // End of file