// Copyright (c) ppy Pty Ltd . Licensed under the MIT Licence. // See the LICENCE file in the repository root for full licence text. using System; using System.Linq; using System.Linq.Expressions; using osu.Framework.Allocation; using osu.Framework.Bindables; using osu.Game.Beatmaps; using osu.Game.Graphics; using osu.Game.Graphics.UserInterface; using osu.Game.Online.Rooms; namespace osu.Game.Screens.OnlinePlay.Components { public abstract class ReadyButton : TriangleButton { public readonly Bindable SelectedItem = new Bindable(); public new readonly BindableBool Enabled = new BindableBool(); [Resolved] protected IBindable GameBeatmap { get; private set; } [Resolved] private BeatmapManager beatmaps { get; set; } private bool hasBeatmap; private IBindable> managerUpdated; private IBindable> managerRemoved; [BackgroundDependencyLoader] private void load(OsuColour colours) { managerUpdated = beatmaps.ItemUpdated.GetBoundCopy(); managerUpdated.BindValueChanged(beatmapUpdated); managerRemoved = beatmaps.ItemRemoved.GetBoundCopy(); managerRemoved.BindValueChanged(beatmapRemoved); SelectedItem.BindValueChanged(item => updateSelectedItem(item.NewValue), true); } private void updateSelectedItem(PlaylistItem item) { hasBeatmap = findBeatmap(expr => beatmaps.QueryBeatmap(expr)); } private void beatmapUpdated(ValueChangedEvent> weakSet) { if (weakSet.NewValue.TryGetTarget(out var set)) { if (findBeatmap(expr => set.Beatmaps.AsQueryable().FirstOrDefault(expr))) Schedule(() => hasBeatmap = true); } } private void beatmapRemoved(ValueChangedEvent> weakSet) { if (weakSet.NewValue.TryGetTarget(out var set)) { if (findBeatmap(expr => set.Beatmaps.AsQueryable().FirstOrDefault(expr))) Schedule(() => hasBeatmap = false); } } private bool findBeatmap(Func>, BeatmapInfo> expression) { int? beatmapId = SelectedItem.Value?.Beatmap.Value?.OnlineBeatmapID; string checksum = SelectedItem.Value?.Beatmap.Value?.MD5Hash; if (beatmapId == null || checksum == null) return false; return expression(b => b.OnlineBeatmapID == beatmapId && b.MD5Hash == checksum) != null; } protected override void Update() { base.Update(); updateEnabledState(); } private void updateEnabledState() { if (GameBeatmap.Value == null || SelectedItem.Value == null) { base.Enabled.Value = false; return; } base.Enabled.Value = hasBeatmap && Enabled.Value; } } }