// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
namespace System.Windows.Shell
{
using System.Windows;
public class ThumbButtonInfoCollection : FreezableCollection<ThumbButtonInfo>
{
protected override Freezable CreateInstanceCore()
{
return new ThumbButtonInfoCollection();
}
/// <summary>
/// A frozen empty ThumbButtonInfoCollection.
/// </summary>
internal static ThumbButtonInfoCollection Empty
{
get
{
if (s_empty == null)
{
var collection = new ThumbButtonInfoCollection();
collection.Freeze();
s_empty = collection;
}
return s_empty;
}
}
private static ThumbButtonInfoCollection s_empty;
}
}
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