jellyfin/Emby.Server.Implementations/Sorting/ParentIndexNumberComparer.cs
Cody Robibero 04cac23a11 Merge pull request #7548 from 1337joe/comparer-null-fix
(cherry picked from commit 72aca15191)
Signed-off-by: crobibero <cody@robibe.ro>
2022-04-07 12:54:58 -04:00

56 lines
1.4 KiB
C#

using System;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Sorting;
using MediaBrowser.Model.Querying;
namespace Emby.Server.Implementations.Sorting
{
/// <summary>
/// Class ParentIndexNumberComparer.
/// </summary>
public class ParentIndexNumberComparer : IBaseItemComparer
{
/// <summary>
/// Gets the name.
/// </summary>
/// <value>The name.</value>
public string Name => ItemSortBy.ParentIndexNumber;
/// <summary>
/// Compares the specified x.
/// </summary>
/// <param name="x">The x.</param>
/// <param name="y">The y.</param>
/// <returns>System.Int32.</returns>
public int Compare(BaseItem? x, BaseItem? y)
{
if (x == null)
{
throw new ArgumentNullException(nameof(x));
}
if (y == null)
{
throw new ArgumentNullException(nameof(y));
}
if (!x.ParentIndexNumber.HasValue && !y.ParentIndexNumber.HasValue)
{
return 0;
}
if (!x.ParentIndexNumber.HasValue)
{
return -1;
}
if (!y.ParentIndexNumber.HasValue)
{
return 1;
}
return x.ParentIndexNumber.Value.CompareTo(y.ParentIndexNumber.Value);
}
}
}