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