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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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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.Threading;
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using System.Threading.Tasks;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Game.Database;
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using osu.Game.Graphics;
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using osu.Game.Localisation;
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using osu.Game.Rulesets;
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using osu.Game.Rulesets.Mods;
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using osuTK;
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using Realms;
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namespace osu.Game.Overlays.Mods
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{
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public class ModPresetColumn : ModSelectColumn
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{
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[Resolved]
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private RealmAccess realm { get; set; } = null!;
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[Resolved]
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private IBindable<RulesetInfo> ruleset { get; set; } = null!;
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[BackgroundDependencyLoader]
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private void load(OsuColour colours)
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{
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AccentColour = colours.Orange1;
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HeaderText = ModSelectOverlayStrings.PersonalPresets;
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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ruleset.BindValueChanged(_ => rulesetChanged(), true);
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}
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private IDisposable? presetSubscription;
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private void rulesetChanged()
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{
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presetSubscription?.Dispose();
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presetSubscription = realm.RegisterForNotifications(r =>
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r.All<ModPreset>()
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.Filter($"{nameof(ModPreset.Ruleset)}.{nameof(RulesetInfo.ShortName)} == $0"
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+ $" && {nameof(ModPreset.DeletePending)} == false", ruleset.Value.ShortName)
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.OrderBy(preset => preset.Name),
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(presets, _, _) => asyncLoadPanels(presets));
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}
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private CancellationTokenSource? cancellationTokenSource;
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private Task? latestLoadTask;
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internal bool ItemsLoaded => latestLoadTask == null;
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private void asyncLoadPanels(IReadOnlyList<ModPreset> presets)
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{
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cancellationTokenSource?.Cancel();
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if (!presets.Any())
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{
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ItemsFlow.Clear();
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return;
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}
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var panels = presets.Select(preset => new ModPresetPanel(preset.ToLive(realm))
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{
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Shear = Vector2.Zero
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});
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Task? loadTask;
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latestLoadTask = loadTask = LoadComponentsAsync(panels, loaded =>
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{
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ItemsFlow.ChildrenEnumerable = loaded;
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}, (cancellationTokenSource = new CancellationTokenSource()).Token);
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loadTask.ContinueWith(_ =>
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{
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if (loadTask == latestLoadTask)
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latestLoadTask = null;
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});
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}
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protected override void Dispose(bool isDisposing)
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{
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base.Dispose(isDisposing);
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presetSubscription?.Dispose();
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}
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}
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}
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