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osu-lazer/osu.Game/Collections/BeatmapCollection.cs
2022-06-24 21:26:19 +09:00

50 lines
1.4 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
#nullable disable
using System;
using osu.Framework.Bindables;
using osu.Game.Beatmaps;
namespace osu.Game.Collections
{
/// <summary>
/// A collection of beatmaps grouped by a name.
/// </summary>
public class BeatmapCollection
{
/// <summary>
/// Invoked whenever any change occurs on this <see cref="BeatmapCollection"/>.
/// </summary>
public event Action Changed;
/// <summary>
/// The collection's name.
/// </summary>
public readonly Bindable<string> Name = new Bindable<string>();
/// <summary>
/// The <see cref="BeatmapInfo.MD5Hash"/>es of beatmaps contained by the collection.
/// </summary>
public readonly BindableList<string> BeatmapHashes = new BindableList<string>();
/// <summary>
/// The date when this collection was last modified.
/// </summary>
public DateTimeOffset LastModifyDate { get; private set; } = DateTimeOffset.UtcNow;
public BeatmapCollection()
{
BeatmapHashes.CollectionChanged += (_, _) => onChange();
Name.ValueChanged += _ => onChange();
}
private void onChange()
{
LastModifyDate = DateTimeOffset.Now;
Changed?.Invoke();
}
}
}