diff -r 000000000000 -r 2e3d3ce01487 commonappservices/alarmserver/Server/Source/ASSrvDSTChange.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commonappservices/alarmserver/Server/Source/ASSrvDSTChange.cpp	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,128 @@
+// Copyright (c) 2008-2009 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 "ASSrvDSTChange.h"
+#include "ASSrvAlarmQueue.h"
+
+#include <e32property.h>
+
+// These are copies of definitions in the tz server
+// they must not change there
+const TInt KDSTChangePropertyKey(0x10285B32);
+
+CASSrvDSTChange* CASSrvDSTChange::NewL(CASSrvAlarmQueue& aASSrvAlarmQueue)
+	{
+	CASSrvDSTChange* self = new(ELeave) CASSrvDSTChange(aASSrvAlarmQueue);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+CASSrvDSTChange::CASSrvDSTChange(CASSrvAlarmQueue& aASSrvAlarmQueue)
+	:CActive(CActive::EPriorityStandard),
+	iASSrvAlarmQueue(aASSrvAlarmQueue),
+	iNextDSTChangeUTC(Time::NullTTime()),
+	iNextUTCOffset(0),
+	iPreviousDSTChangeUTC(Time::NullTTime()),
+	iPreviousUTCOffset(0)
+	{
+	CActiveScheduler::Add(this);
+	}
+
+void CASSrvDSTChange::ConstructL()
+	{
+	TInt attachError = iDSTChangeProperty.Attach(KUidSystemCategory, KDSTChangePropertyKey);
+	
+	if (attachError == KErrNone)
+		{
+		// Only subscribe if there was no error.  There should only be an error if the property
+		// has not yet been defined and there was no memory to create the property.  The behaviour
+		// in this fail case will be for the alarm server to not be aware of any DST change events
+		// that are scheduled.
+		
+		iDSTChangeProperty.Subscribe(iStatus);
+		SetActive();
+		
+		UpdatePropertyValuesL();
+		}
+	}
+
+CASSrvDSTChange::~CASSrvDSTChange()
+	{
+	Cancel();
+	iDSTChangeProperty.Close();
+	}
+
+TTime CASSrvDSTChange::NextDSTChangeUTC() const
+	{
+	return iNextDSTChangeUTC;
+	}
+
+TTimeIntervalMinutes CASSrvDSTChange::NextUTCOffset() const
+	{
+	return iNextUTCOffset;
+	}
+
+TTime CASSrvDSTChange::PreviousDSTChangeUTC() const
+	{
+	return iPreviousDSTChangeUTC;
+	}
+
+TTimeIntervalMinutes CASSrvDSTChange::PreviousUTCOffset() const
+	{
+	return iPreviousUTCOffset;
+	}
+
+void CASSrvDSTChange::UpdatePropertyValuesL()
+	{
+	TPckgBuf<TNextDSTChange> fetchedDSTChangeBuf;
+	TInt getError = iDSTChangeProperty.Get(fetchedDSTChangeBuf);
+	
+	if (getError == KErrNone)
+		{
+		iNextDSTChangeUTC = fetchedDSTChangeBuf().iNextDSTChangeUTC;
+		iNextUTCOffset = fetchedDSTChangeBuf().iNextUTCOffset;
+			
+		if (fetchedDSTChangeBuf().iVersion >= 2)
+			{
+			iPreviousDSTChangeUTC = fetchedDSTChangeBuf().iPreviousDSTChangeUTC;
+			iPreviousUTCOffset = fetchedDSTChangeBuf().iPreviousUTCOffset;
+			}
+		}
+	}
+
+void CASSrvDSTChange::RunL()
+	{	
+	if (iStatus.Int() == KErrNone)
+		{
+		// Subscribe again before handling the change
+		iDSTChangeProperty.Subscribe(iStatus);
+		SetActive();
+		
+		UpdatePropertyValuesL();
+#ifdef SYMBIAN_SYSTEM_STATE_MANAGEMENT
+		// Tell the alarm queue that it may need to reset the RTC
+		iASSrvAlarmQueue.HandleNextDSTChangeEventL();
+#endif
+		}
+	}
+
+void CASSrvDSTChange::DoCancel()
+	{
+	iDSTChangeProperty.Cancel();
+	}
+
+