psln/Src/pslnidletaskcreateviews.cpp
changeset 0 2f259fa3e83a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/psln/Src/pslnidletaskcreateviews.cpp	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,148 @@
+/*
+* Copyright (c) 2006-2007 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:  Background task for creating views.
+*
+*/
+
+
+#include "pslnidletaskcreateviews.h"
+#include "PslnUi.h"
+#include "PslnConst.h"
+#include "PslnModel.h"
+
+// First step is to create tabgroup.
+const TInt KPslnCreateTabs = 0;
+// Second step is to create parts of the model.
+const TInt KPslnFullUpdateModel = 1;
+// Third  step is to create general theme view.
+const TInt KPslnCreateGeneralView = 2;
+// Fourth step is to create wallpaper view.
+const TInt KPslnCreateWallpaperView = 3;
+// Fifth (and final) step is to create screensaver view.
+const TInt KPslnCreateScreensaverView = 4;
+
+// ---------------------------------------------------------------------------
+// C++ constructor can NOT contain any code, that might leave.
+// ---------------------------------------------------------------------------
+//
+CPslnIdleTaskCreateViews::CPslnIdleTaskCreateViews( CPslnUi* aPslnUi ) :
+    iPslnUi( aPslnUi ), iDone( EFalse ), iIdleStep( KPslnCreateTabs )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CPslnIdleTaskCreateViews* CPslnIdleTaskCreateViews::NewL( CPslnUi* aPslnUi )
+    {
+    CPslnIdleTaskCreateViews* self =
+        new( ELeave ) CPslnIdleTaskCreateViews( aPslnUi );
+
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CPslnIdleTaskCreateViews::ConstructL()
+    {
+    iIdleTask = CIdle::NewL( CActive::EPriorityIdle );
+    iIdleTask->Start( TCallBack( DoHandleIdleTimeL, this ) );
+    }
+
+// Destructor
+CPslnIdleTaskCreateViews::~CPslnIdleTaskCreateViews()
+    {
+    if ( iIdleTask )
+        {
+        iIdleTask->Cancel();
+        }
+    delete iIdleTask;
+    }
+
+// ---------------------------------------------------------------------------
+// Informs when task is finished.
+// ---------------------------------------------------------------------------
+//
+TBool CPslnIdleTaskCreateViews::IsFinished() const
+    {
+    return iDone;
+    }
+
+// -----------------------------------------------------------------------------
+// Callback function when application is idle.
+// -----------------------------------------------------------------------------
+//
+TInt CPslnIdleTaskCreateViews::DoHandleIdleTimeL( TAny* aAny )
+    {
+    static_cast< CPslnIdleTaskCreateViews* >( aAny )->HandleIdleTimeL();
+    return KErrNone;
+    }
+
+// -----------------------------------------------------------------------------
+// Handles idle time. With each step a new view is created.
+// -----------------------------------------------------------------------------
+//
+void CPslnIdleTaskCreateViews::HandleIdleTimeL()
+    {
+    if ( !IsFinished() )
+        {
+        TUid viewToCreate = KPslnGeneralView; //just initialise
+        switch( iIdleStep )
+            {
+            case KPslnCreateTabs:
+                iPslnUi->ConstructTabGroupL();
+                break;
+            case KPslnFullUpdateModel:
+                if ( iPslnUi->Model() &&
+                     iPslnUi->Model()->ActiveSkinIndex() == KErrNotFound )
+                    {
+                    iPslnUi->Model()->PerformCompleteUpdateL();
+                    }
+                break;
+            case KPslnCreateGeneralView:
+                viewToCreate = KPslnGeneralView;
+                break;
+            case KPslnCreateWallpaperView:
+                viewToCreate = KPslnWallpaperView;
+                break;
+            case KPslnCreateScreensaverView:
+                viewToCreate = KPslnScreenSaverView;
+                iDone = ETrue;
+                break;
+            default:
+                User::Leave( KErrArgument );
+                break;
+            }
+        if ( iIdleStep != KPslnCreateTabs && iIdleStep != KPslnFullUpdateModel )
+            {
+            iPslnUi->CreateViewL( viewToCreate );
+            }
+        iIdleStep++;
+        if ( !iDone )
+            {
+            if ( iIdleTask && !iIdleTask->IsActive() )
+                {
+                iIdleTask->Start( TCallBack( DoHandleIdleTimeL, this ) );
+                }
+            }
+        }
+    }
+
+// End of file