mirror of https://github.com/ppy/osu
338 lines
13 KiB
C#
338 lines
13 KiB
C#
// 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 osu.Framework.Allocation;
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using osu.Framework.Graphics.Containers;
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using osu.Game.Online.API;
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using osu.Game.Online.API.Requests;
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using osu.Framework.Graphics;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics.Shapes;
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using osu.Game.Online.API.Requests.Responses;
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using System.Threading;
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using System.Linq;
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using osu.Framework.Extensions.IEnumerableExtensions;
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using osu.Framework.Threading;
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using System.Collections.Generic;
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using JetBrains.Annotations;
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using osu.Game.Graphics.Sprites;
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using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
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namespace osu.Game.Overlays.Comments
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{
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public class CommentsContainer : CompositeDrawable
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{
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private readonly Bindable<CommentableType> type = new Bindable<CommentableType>();
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private readonly BindableLong id = new BindableLong();
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public readonly Bindable<CommentsSortCriteria> Sort = new Bindable<CommentsSortCriteria>();
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public readonly BindableBool ShowDeleted = new BindableBool();
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protected readonly IBindable<APIUser> User = new Bindable<APIUser>();
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[Resolved]
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private IAPIProvider api { get; set; }
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private GetCommentsRequest request;
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private ScheduledDelegate scheduledCommentsLoad;
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private CancellationTokenSource loadCancellation;
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private int currentPage;
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private FillFlowContainer pinnedContent;
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private FillFlowContainer content;
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private DeletedCommentsCounter deletedCommentsCounter;
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private CommentsShowMoreButton moreButton;
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private TotalCommentsCounter commentCounter;
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[BackgroundDependencyLoader]
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private void load(OverlayColourProvider colourProvider)
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{
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RelativeSizeAxes = Axes.X;
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AutoSizeAxes = Axes.Y;
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AddRangeInternal(new Drawable[]
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{
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new Box
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{
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RelativeSizeAxes = Axes.Both,
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Colour = colourProvider.Background5
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},
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new FillFlowContainer
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{
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Direction = FillDirection.Vertical,
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Children = new Drawable[]
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{
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commentCounter = new TotalCommentsCounter(),
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new Container
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{
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Children = new Drawable[]
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{
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new Box
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{
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RelativeSizeAxes = Axes.Both,
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Colour = colourProvider.Background4,
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},
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pinnedContent = new FillFlowContainer
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{
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Direction = FillDirection.Vertical,
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},
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},
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},
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new CommentsHeader
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{
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Sort = { BindTarget = Sort },
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ShowDeleted = { BindTarget = ShowDeleted }
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},
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content = new FillFlowContainer
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{
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Direction = FillDirection.Vertical,
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},
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new Container
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{
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Name = @"Footer",
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Children = new Drawable[]
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{
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new FillFlowContainer
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{
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Direction = FillDirection.Vertical,
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Margin = new MarginPadding { Bottom = 20 },
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Children = new Drawable[]
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{
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deletedCommentsCounter = new DeletedCommentsCounter
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{
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ShowDeleted = { BindTarget = ShowDeleted },
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Margin = new MarginPadding
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{
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Horizontal = 70,
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Vertical = 10
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}
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},
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new Container
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{
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AutoSizeAxes = Axes.Y,
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RelativeSizeAxes = Axes.X,
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Child = moreButton = new CommentsShowMoreButton
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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Margin = new MarginPadding
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{
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Vertical = 10
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},
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Action = getComments,
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IsLoading = true,
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}
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}
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}
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}
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}
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}
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}
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}
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});
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User.BindTo(api.LocalUser);
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}
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protected override void LoadComplete()
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{
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User.BindValueChanged(_ => refetchComments());
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Sort.BindValueChanged(_ => refetchComments(), true);
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base.LoadComplete();
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}
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/// <param name="type">The type of resource to get comments for.</param>
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/// <param name="id">The id of the resource to get comments for.</param>
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public void ShowComments(CommentableType type, long id)
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{
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this.type.Value = type;
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this.id.Value = id;
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if (!IsLoaded)
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return;
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// only reset when changing ID/type. other refetch ops are generally just changing sort order.
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commentCounter.Current.Value = 0;
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refetchComments();
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}
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private void refetchComments()
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{
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ClearComments();
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getComments();
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}
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private void getComments()
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{
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if (id.Value <= 0)
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return;
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request?.Cancel();
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loadCancellation?.Cancel();
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scheduledCommentsLoad?.Cancel();
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request = new GetCommentsRequest(id.Value, type.Value, Sort.Value, currentPage++, 0);
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request.Success += res => scheduledCommentsLoad = Schedule(() => OnSuccess(res));
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api.PerformAsync(request);
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}
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protected void ClearComments()
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{
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currentPage = 1;
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deletedCommentsCounter.Count.Value = 0;
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moreButton.Show();
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moreButton.IsLoading = true;
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pinnedContent.Clear();
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content.Clear();
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CommentDictionary.Clear();
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}
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protected readonly Dictionary<long, DrawableComment> CommentDictionary = new Dictionary<long, DrawableComment>();
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protected void OnSuccess(CommentBundle response)
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{
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commentCounter.Current.Value = response.Total;
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if (!response.Comments.Any())
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{
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content.Add(new NoCommentsPlaceholder());
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moreButton.Hide();
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return;
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}
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AppendComments(response);
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}
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/// <summary>
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/// Appends retrieved comments to the subtree rooted of comments in this page.
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/// </summary>
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/// <param name="bundle">The bundle of comments to add.</param>
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protected void AppendComments([NotNull] CommentBundle bundle)
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{
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var topLevelComments = new List<DrawableComment>();
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var orphaned = new List<Comment>();
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foreach (var comment in bundle.Comments.Concat(bundle.IncludedComments).Concat(bundle.PinnedComments))
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{
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// Exclude possible duplicated comments.
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if (CommentDictionary.ContainsKey(comment.Id))
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continue;
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addNewComment(comment);
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}
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// Comments whose parents were seen later than themselves can now be added.
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foreach (var o in orphaned)
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addNewComment(o);
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if (topLevelComments.Any())
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{
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LoadComponentsAsync(topLevelComments, loaded =>
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{
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pinnedContent.AddRange(loaded.Where(d => d.Comment.Pinned));
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content.AddRange(loaded.Where(d => !d.Comment.Pinned));
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deletedCommentsCounter.Count.Value += topLevelComments.Select(d => d.Comment).Count(c => c.IsDeleted && c.IsTopLevel);
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if (bundle.HasMore)
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{
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int loadedTopLevelComments = 0;
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pinnedContent.Children.OfType<DrawableComment>().ForEach(p => loadedTopLevelComments++);
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content.Children.OfType<DrawableComment>().ForEach(p => loadedTopLevelComments++);
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moreButton.Current.Value = bundle.TopLevelCount - loadedTopLevelComments;
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moreButton.IsLoading = false;
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}
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else
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{
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moreButton.Hide();
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}
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}, (loadCancellation = new CancellationTokenSource()).Token);
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}
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void addNewComment(Comment comment)
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{
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var drawableComment = getDrawableComment(comment);
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if (comment.ParentId == null)
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{
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// Comments that have no parent are added as top-level comments to the flow.
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topLevelComments.Add(drawableComment);
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}
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else if (CommentDictionary.TryGetValue(comment.ParentId.Value, out var parentDrawable))
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{
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// The comment's parent has already been seen, so the parent<-> child links can be added.
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comment.ParentComment = parentDrawable.Comment;
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parentDrawable.Replies.Add(drawableComment);
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}
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else
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{
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// The comment's parent has not been seen yet, so keep it orphaned for the time being. This can occur if the comments arrive out of order.
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// Since this comment has now been seen, any further children can be added to it without being orphaned themselves.
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orphaned.Add(comment);
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}
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}
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}
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private DrawableComment getDrawableComment(Comment comment)
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{
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if (CommentDictionary.TryGetValue(comment.Id, out var existing))
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return existing;
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return CommentDictionary[comment.Id] = new DrawableComment(comment)
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{
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ShowDeleted = { BindTarget = ShowDeleted },
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Sort = { BindTarget = Sort },
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RepliesRequested = onCommentRepliesRequested
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};
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}
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private void onCommentRepliesRequested(DrawableComment drawableComment, int page)
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{
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var req = new GetCommentsRequest(id.Value, type.Value, Sort.Value, page, drawableComment.Comment.Id);
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req.Success += response => Schedule(() => AppendComments(response));
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api.PerformAsync(req);
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}
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protected override void Dispose(bool isDisposing)
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{
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request?.Cancel();
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loadCancellation?.Cancel();
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base.Dispose(isDisposing);
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}
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private class NoCommentsPlaceholder : CompositeDrawable
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{
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[BackgroundDependencyLoader]
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private void load()
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{
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Height = 80;
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RelativeSizeAxes = Axes.X;
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AddRangeInternal(new Drawable[]
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{
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new OsuSpriteText
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{
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Anchor = Anchor.CentreLeft,
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Origin = Anchor.CentreLeft,
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Margin = new MarginPadding { Left = 50 },
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Text = @"No comments yet."
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}
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});
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}
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}
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}
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}
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