osu/osu.Game/Overlays/Mods/ModPresetColumn.cs

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// 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.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using osu.Framework.Allocation;
using osu.Game.Graphics;
using osu.Game.Localisation;
using osu.Game.Rulesets.Mods;
using osuTK;
namespace osu.Game.Overlays.Mods
{
public class ModPresetColumn : ModSelectColumn
{
private IReadOnlyList<ModPreset> presets = Array.Empty<ModPreset>();
/// <summary>
/// Sets the collection of available mod presets.
/// </summary>
public IReadOnlyList<ModPreset> Presets
{
get => presets;
set
{
presets = value;
if (IsLoaded)
asyncLoadPanels();
}
}
[BackgroundDependencyLoader]
private void load(OsuColour colours)
{
AccentColour = colours.Orange1;
HeaderText = ModSelectOverlayStrings.PersonalPresets;
}
protected override void LoadComplete()
{
base.LoadComplete();
asyncLoadPanels();
}
private CancellationTokenSource? cancellationTokenSource;
private Task? latestLoadTask;
internal bool ItemsLoaded => latestLoadTask == null;
private void asyncLoadPanels()
{
cancellationTokenSource?.Cancel();
var panels = presets.Select(preset => new ModPresetPanel(preset)
{
Shear = Vector2.Zero
});
Task? loadTask;
latestLoadTask = loadTask = LoadComponentsAsync(panels, loaded =>
{
ItemsFlow.ChildrenEnumerable = loaded;
}, (cancellationTokenSource = new CancellationTokenSource()).Token);
loadTask.ContinueWith(_ =>
{
if (loadTask == latestLoadTask)
latestLoadTask = null;
});
}
}
}