diff -r 3ab5c078b490 -r c63ee96dbe5f taskswitcher/backstepping/src/tsbacksteppingactivation.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/backstepping/src/tsbacksteppingactivation.cpp	Thu Sep 16 12:11:40 2010 +0100
@@ -0,0 +1,135 @@
+/*
+* Copyright (c) 2009 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 <startupdomainpskeys.h>
+#include <flogger.h>
+#include <w32std.h>
+
+#include "tsbacksteppingactivation.h"
+#include "tsbackstepping.h"
+
+ // ============================ MEMBER FUNCTIONS ===============================
+// -----------------------------------------------------------------------------
+// CBacksteppingActivation::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CTsBacksteppingActivation* CTsBacksteppingActivation::NewL(MTsWindowGroupsMonitor &monitor)
+{
+    CTsBacksteppingActivation* self = new( ELeave ) CTsBacksteppingActivation(monitor);
+    self->ConstructL();
+    return self;
+}
+
+// -----------------------------------------------------------------------------
+// CTsBacksteppingActivation::CTsBacksteppingActivation
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CTsBacksteppingActivation::CTsBacksteppingActivation(MTsWindowGroupsMonitor &monitor) 
+:
+    CActive(EPriorityLow),
+    mMonitor(monitor)
+{
+    CActiveScheduler::Add(this);
+}
+
+// -----------------------------------------------------------------------------
+// CTsBacksteppingActivation::ConstructL()
+// -----------------------------------------------------------------------------
+//
+void CTsBacksteppingActivation::ConstructL() 
+{
+    User::LeaveIfError(mProperty.Attach(KPSUidStartup, KPSIdlePhase1Ok));
+    iStatus = KRequestPending;
+    SetActive();
+    TRequestStatus* status(&iStatus);
+    User::RequestComplete(status, KErrNone);
+}
+
+// -----------------------------------------------------------------------------
+// CTsBacksteppingActivation::~CTsBacksteppingActivation
+// Destructor
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CTsBacksteppingActivation::~CTsBacksteppingActivation()
+{
+    Cancel();
+    delete mEngine;
+    mProperty.Close();
+}
+
+// -----------------------------------------------------------------------------
+// CBacksteppingActivation::DoCancel
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsBacksteppingActivation::DoCancel()
+{
+    if ( IsActive() && mProperty.Handle() ) {
+        mProperty.Cancel();
+    }
+}
+
+// -----------------------------------------------------------------------------
+// CBacksteppingActivation::RunL
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsBacksteppingActivation::RunL()
+{
+    User::LeaveIfError(iStatus.Int());
+    
+    TInt state(~EIdlePhase1Ok);
+    User::LeaveIfError(mProperty.Get(state));
+    
+    if (EIdlePhase1Ok == state) {
+        if (0 == mEngine) {
+            mEngine = CTsBackstepping::NewL(mMonitor);
+        }
+    } else {
+        delete mEngine;
+        mEngine = 0;
+    }
+    Subscribe();
+}
+
+// -----------------------------------------------------------------------------
+// CBacksteppingActivation::RunError
+// 
+// -----------------------------------------------------------------------------
+//
+TInt CTsBacksteppingActivation::RunError(TInt error)
+{
+    if (KErrCancel != error) {
+        Subscribe();
+    }
+    return KErrNone;
+}
+
+// -----------------------------------------------------------------------------
+// CBacksteppingActivation::Subscribe
+// 
+// -----------------------------------------------------------------------------
+//
+void CTsBacksteppingActivation::Subscribe()
+{
+    mProperty.Subscribe(iStatus);
+    SetActive();
+}
+// end of file