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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.Activities.Runtime
{
using System;
using System.Runtime;
using System.Runtime.Serialization;
using System.Collections.Generic;
[DataContract]
class CompletionBookmark
{
CompletionCallbackWrapper callbackWrapper;
public CompletionBookmark()
{
// Called when we want to use the special completion callback
}
public CompletionBookmark(CompletionCallbackWrapper callbackWrapper)
{
this.callbackWrapper = callbackWrapper;
}
[DataMember(EmitDefaultValue = false, Name = "callbackWrapper")]
internal CompletionCallbackWrapper SerializedCallbackWrapper
{
get { return this.callbackWrapper; }
set { this.callbackWrapper = value; }
}
public void CheckForCancelation()
{
Fx.Assert(this.callbackWrapper != null, "We must have a callback wrapper if we are calling this.");
this.callbackWrapper.CheckForCancelation();
}
public WorkItem GenerateWorkItem(ActivityInstance completedInstance, ActivityExecutor executor)
{
if (this.callbackWrapper != null)
{
return this.callbackWrapper.CreateWorkItem(completedInstance, executor);
}
else
{
// Variable defaults and argument expressions always have a parent
// and never have a CompletionBookmark
if (completedInstance.State != ActivityInstanceState.Closed && completedInstance.Parent.HasNotExecuted)
{
completedInstance.Parent.SetInitializationIncomplete();
}
return new EmptyWithCancelationCheckWorkItem(completedInstance.Parent, completedInstance);
}
}
}
}
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