57 lines
1.4 KiB
C#
57 lines
1.4 KiB
C#
/*************************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2007-2013 Xceed Software Inc.
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This program is provided to you under the terms of the Microsoft Public
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License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
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For more features, controls, and fast professional support,
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pick up the Plus Edition at http://xceed.com/wpf_toolkit
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Stay informed: follow @datagrid on Twitter or Like http://facebook.com/datagrids
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***********************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Xceed.Wpf.AvalonDock.Controls
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{
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class ReentrantFlag
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{
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public class _ReentrantFlagHandler : IDisposable
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{
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ReentrantFlag _owner;
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public _ReentrantFlagHandler(ReentrantFlag owner)
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{
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_owner = owner;
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_owner._flag = true;
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}
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public void Dispose()
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{
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_owner._flag = false;
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}
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}
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bool _flag = false;
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public _ReentrantFlagHandler Enter()
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{
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if (_flag)
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throw new InvalidOperationException();
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return new _ReentrantFlagHandler(this);
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}
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public bool CanEnter
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{
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get { return !_flag; }
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}
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}
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}
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