61 lines
1.5 KiB
C#
61 lines
1.5 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities
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{
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using System;
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using System.Activities.Runtime;
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using System.Runtime;
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using System.Runtime.Serialization;
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// This does not need to be data contract since we'll never persist while one of these is active
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class NoPersistProperty : IPropertyRegistrationCallback
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{
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public const string Name = "System.Activities.NoPersistProperty";
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ActivityExecutor executor;
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int refCount;
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public NoPersistProperty(ActivityExecutor executor)
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{
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this.executor = executor;
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}
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public void Enter()
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{
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this.refCount++;
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this.executor.EnterNoPersist();
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}
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public bool Exit()
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{
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Fx.Assert(this.refCount > 0, "We should guard against too many exits elsewhere.");
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this.refCount--;
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this.executor.ExitNoPersist();
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return this.refCount == 0;
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}
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public void Register(RegistrationContext context)
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{
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}
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public void Unregister(RegistrationContext context)
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{
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if (this.refCount > 0)
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{
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for (int i = 0; i < this.refCount; i++)
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{
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this.executor.ExitNoPersist();
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}
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this.refCount = 0;
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}
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}
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}
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}
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