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osu-lazer/osu.Game/Overlays/Profile/Sections/PaginatedContainer.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.
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using osuTK;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Graphics;
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using osu.Game.Graphics.Sprites;
using osu.Game.Online.API;
using osu.Game.Rulesets;
using osu.Game.Users;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
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namespace osu.Game.Overlays.Profile.Sections
{
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public abstract class PaginatedContainer<TModel> : FillFlowContainer
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{
private readonly ShowMoreButton moreButton;
private readonly OsuSpriteText missingText;
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private APIRequest<List<TModel>> retrievalRequest;
private CancellationTokenSource loadCancellation;
[Resolved]
private IAPIProvider api { get; set; }
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protected int VisiblePages;
protected int ItemsPerPage;
protected readonly Bindable<User> User = new Bindable<User>();
protected readonly FillFlowContainer ItemsContainer;
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protected RulesetStore Rulesets;
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protected PaginatedContainer(Bindable<User> user, string header, string missing)
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{
User.BindTo(user);
RelativeSizeAxes = Axes.X;
AutoSizeAxes = Axes.Y;
Direction = FillDirection.Vertical;
Children = new Drawable[]
{
new OsuSpriteText
{
Text = header,
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Font = OsuFont.GetFont(size: 20, weight: FontWeight.Bold),
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Margin = new MarginPadding { Top = 10, Bottom = 10 },
},
ItemsContainer = new FillFlowContainer
{
AutoSizeAxes = Axes.Y,
RelativeSizeAxes = Axes.X,
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Spacing = new Vector2(0, 2),
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},
moreButton = new ShowMoreButton
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{
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Anchor = Anchor.TopCentre,
Origin = Anchor.TopCentre,
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Alpha = 0,
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Margin = new MarginPadding { Top = 10 },
Action = showMore,
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},
missingText = new OsuSpriteText
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{
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Font = OsuFont.GetFont(size: 15),
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Text = missing,
Alpha = 0,
},
};
}
[BackgroundDependencyLoader]
private void load(RulesetStore rulesets)
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{
Rulesets = rulesets;
User.ValueChanged += onUserChanged;
User.TriggerChange();
}
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private void onUserChanged(ValueChangedEvent<User> e)
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{
loadCancellation?.Cancel();
retrievalRequest?.Cancel();
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VisiblePages = 0;
ItemsContainer.Clear();
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if (e.NewValue != null)
showMore();
}
private void showMore()
{
loadCancellation = new CancellationTokenSource();
retrievalRequest = CreateRequest();
retrievalRequest.Success += UpdateItems;
api.Queue(retrievalRequest);
}
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protected virtual void UpdateItems(List<TModel> items) => Schedule(() =>
{
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if (!items.Any() && VisiblePages == 1)
{
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moreButton.Hide();
moreButton.IsLoading = false;
missingText.Show();
return;
}
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LoadComponentsAsync(items.Select(CreateDrawableItem).Where(d => d != null), drawables =>
{
missingText.Hide();
moreButton.FadeTo(items.Count == ItemsPerPage ? 1 : 0);
moreButton.IsLoading = false;
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ItemsContainer.AddRange(drawables);
}, loadCancellation.Token);
});
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protected abstract APIRequest<List<TModel>> CreateRequest();
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protected abstract Drawable CreateDrawableItem(TModel model);
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
retrievalRequest?.Cancel();
}
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}
}