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