--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysstatemgmt/systemstatemgr/cmd/src/ssmdeferrablecommand.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,143 @@
+// Copyright (c) 2007-2009 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 "ssmdeferrablecommand.h"
+#include "ssmdebug.h"
+#include "ssmpanic.h"
+
+CSsmDeferrableCommand::CSsmDeferrableCommand()
+	: iCompletionStatus(KSsmCommandPending), iExecutionBehaviour(ESsmFireAndForget)
+	{
+	}
+
+CSsmDeferrableCommand::CSsmDeferrableCommand(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour)
+#ifdef SYMBIAN_SSM_FLEXIBLE_MERGE 
+	: CSsmCommandBase(aSeverity, KDefaultCommandPriority),
+#else
+	: CSsmCommandBase(aSeverity),
+#endif
+	iCompletionStatus(KSsmCommandPending), iExecutionBehaviour(aExecutionBehaviour)
+	{
+	}
+
+CSsmDeferrableCommand::CSsmDeferrableCommand(TCmdErrorSeverity aSeverity)
+#ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
+	: CSsmCommandBase(aSeverity, KDefaultCommandPriority),
+#else
+	: CSsmCommandBase(aSeverity),
+#endif
+	iCompletionStatus(KSsmCommandPending), iExecutionBehaviour(ESsmFireAndForget)
+	{
+	}
+
+#ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
+CSsmDeferrableCommand::CSsmDeferrableCommand(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TUint16 aPriority)
+	: CSsmCommandBase(aSeverity, aPriority), iCompletionStatus(KSsmCommandPending), iExecutionBehaviour(aExecutionBehaviour)
+	{
+	}
+
+CSsmDeferrableCommand::CSsmDeferrableCommand(TCmdErrorSeverity aSeverity, const TUint16 aPriority)
+	: CSsmCommandBase(aSeverity, aPriority), iCompletionStatus(KSsmCommandPending), iExecutionBehaviour(ESsmFireAndForget)
+	{
+	}
+
+#endif
+CSsmDeferrableCommand::~CSsmDeferrableCommand()
+	{
+	}
+
+TBool CSsmDeferrableCommand::IsDeferred() const
+	{
+	return iExecutionBehaviour != ESsmWaitForSignal;
+	}
+
+TSsmExecutionBehaviour CSsmDeferrableCommand::ExecutionBehaviour() const
+	{
+	return iExecutionBehaviour;
+	}
+
+TInt CSsmDeferrableCommand::CompletionStatus() const
+	{
+	return iCompletionStatus;
+	}
+
+void CSsmDeferrableCommand::RegisterCompletionObserver(TRequestStatus& aStatus)
+	{
+	__ASSERT_ALWAYS(iCompletionObserver == NULL, PanicNow(KPanicDeferrableCommand, EInvalidDeferrebleCmdRegistration)); // guard against registering more than once
+	aStatus = KRequestPending;
+	iCompletionObserver = &aStatus; 
+
+	if (iCompletionStatus != KSsmCommandPending)
+		{
+		CompleteRequest(*iCompletionObserver, KErrNone);
+		iCompletionObserver = NULL;
+		}
+	}
+
+void CSsmDeferrableCommand::RegisterCompletionObserverCancel()
+	{
+	if (iCompletionObserver)
+		{
+		// assume the request is still pending
+		CompleteRequest(*iCompletionObserver, KErrCancel);
+		iCompletionObserver = NULL;
+		}
+	}
+
+TBool CSsmDeferrableCommand::EvaluateCondition(MSsmConditionalCallback* aCallback, CResourceFile* aResourceFile)
+	{
+	TBool ret = CSsmCommandBase::EvaluateCondition(aCallback, aResourceFile);
+	if (ret == EFalse)
+		{
+		// Need to set iCompletionStatus to KErrNone as this command will never run
+		CompleteDeferredExecuteRequest(KErrNone);
+		}
+	return ret;
+	}
+
+void CSsmDeferrableCommand::CompleteDeferredExecuteRequest(TInt aReason)
+	{
+	if (iCompletionObserver)
+		{
+		// notify observer of command completion
+		CompleteRequest(*iCompletionObserver, KErrNone); // observer is expected to call CompletionCode() to get the error code 
+		iCompletionObserver = NULL;
+		}
+
+	if (Severity()==ECmdIgnoreFailure && aReason!=KErrCancel)
+		{
+		iCompletionStatus = KErrNone;
+		}
+	else
+		{
+		iCompletionStatus = aReason;
+		}
+	DEBUGVERBOSE2A("iCompletionStatus set to %d", iCompletionStatus);
+				
+	if (iExecutionBehaviour != ESsmDeferredWaitForSignal)
+		{
+		CompleteExecuteRequest(aReason);
+		}
+	}
+
+void CSsmDeferrableCommand::ValidateL()
+	{
+	if (iExecutionBehaviour != ESsmFireAndForget && 
+		iExecutionBehaviour != ESsmWaitForSignal && 
+		iExecutionBehaviour != ESsmDeferredWaitForSignal )
+		{
+		User::Leave(KErrArgument);
+		}
+	}