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osu-lazer/osu.Game/Overlays/Profile/Sections/PaginatedProfileSubsection.cs

169 lines
5.7 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.
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Localisation;
using osu.Game.Graphics;
using osu.Game.Graphics.Sprites;
using osu.Game.Graphics.UserInterface;
using osu.Game.Online.API;
using osu.Game.Graphics.Containers;
using osu.Game.Online.API.Requests;
using osu.Game.Online.API.Requests.Responses;
using osuTK;
namespace osu.Game.Overlays.Profile.Sections
{
public abstract partial class PaginatedProfileSubsection<TModel> : ProfileSubsection
{
/// <summary>
/// The number of items displayed per page.
/// </summary>
protected virtual int ItemsPerPage => 50;
/// <summary>
/// The number of items displayed initially.
/// </summary>
protected virtual int InitialItemsCount => 5;
[Resolved]
private IAPIProvider api { get; set; } = null!;
protected PaginationParameters? CurrentPage { get; private set; }
protected ReverseChildIDFillFlowContainer<Drawable> ItemsContainer { get; private set; } = null!;
private APIRequest<List<TModel>>? retrievalRequest;
private CancellationTokenSource? loadCancellation;
private ShowMoreButton moreButton = null!;
private OsuSpriteText missing = null!;
private readonly LocalisableString? missingText;
protected PaginatedProfileSubsection(Bindable<UserProfileData?> user, LocalisableString? headerText = null, LocalisableString? missingText = null)
: base(user, headerText, CounterVisibilityState.AlwaysVisible)
{
this.missingText = missingText;
}
protected override Drawable CreateContent() => new FillFlowContainer
{
RelativeSizeAxes = Axes.X,
AutoSizeAxes = Axes.Y,
Direction = FillDirection.Vertical,
Children = new Drawable[]
{
// reverse ID flow is required for correct Z-ordering of the items (last item should be front-most).
// particularly important in PaginatedBeatmapContainer, as it uses beatmap cards, which have expandable overhanging content.
ItemsContainer = new ReverseChildIDFillFlowContainer<Drawable>
{
AutoSizeAxes = Axes.Y,
RelativeSizeAxes = Axes.X,
Spacing = new Vector2(0, 2),
// ensure the container and its contents are in front of the "more" button.
Depth = float.MinValue
},
moreButton = new ShowMoreButton
{
Anchor = Anchor.TopCentre,
Origin = Anchor.TopCentre,
Alpha = 0,
Margin = new MarginPadding { Top = 10 },
Action = showMore,
},
missing = new OsuSpriteText
{
Font = OsuFont.GetFont(size: 15),
Text = missingText ?? string.Empty,
Alpha = 0,
}
}
};
protected override void LoadComplete()
{
base.LoadComplete();
User.BindValueChanged(onUserChanged, true);
}
private void onUserChanged(ValueChangedEvent<UserProfileData?> e)
{
loadCancellation?.Cancel();
retrievalRequest?.Cancel();
CurrentPage = null;
ItemsContainer.Clear();
if (e.NewValue?.User != null)
{
showMore();
SetCount(GetCount(e.NewValue.User));
}
}
private void showMore()
{
if (User.Value == null)
return;
loadCancellation = new CancellationTokenSource();
CurrentPage = CurrentPage?.TakeNext(ItemsPerPage) ?? new PaginationParameters(InitialItemsCount);
retrievalRequest = CreateRequest(User.Value, CurrentPage.Value);
retrievalRequest.Success += items => UpdateItems(items, loadCancellation);
api.Queue(retrievalRequest);
}
protected virtual void UpdateItems(List<TModel> items, CancellationTokenSource cancellationTokenSource) => Schedule(() =>
{
OnItemsReceived(items);
if (!items.Any() && CurrentPage?.Offset == 0)
{
moreButton.Hide();
moreButton.IsLoading = false;
if (missingText.HasValue)
missing.Show();
return;
}
LoadComponentsAsync(items.Select(CreateDrawableItem).Where(d => d != null).Cast<Drawable>(), drawables =>
{
missing.Hide();
moreButton.FadeTo(items.Count == CurrentPage?.Limit ? 1 : 0);
moreButton.IsLoading = false;
ItemsContainer.AddRange(drawables);
}, cancellationTokenSource.Token);
});
protected virtual int GetCount(APIUser user) => 0;
protected virtual void OnItemsReceived(List<TModel> items)
{
}
protected abstract APIRequest<List<TModel>> CreateRequest(UserProfileData user, PaginationParameters pagination);
protected abstract Drawable? CreateDrawableItem(TModel model);
protected override void Dispose(bool isDisposing)
{
retrievalRequest?.Cancel();
loadCancellation?.Cancel();
base.Dispose(isDisposing);
}
}
}