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103 lines
2.8 KiB
C#
103 lines
2.8 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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#nullable disable
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using System.Threading;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Game.Online.API;
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namespace osu.Game.Overlays
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{
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public abstract partial class TabbableOnlineOverlay<THeader, TEnum> : OnlineOverlay<THeader>
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where THeader : TabControlOverlayHeader<TEnum>
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{
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private readonly IBindable<APIState> apiState = new Bindable<APIState>();
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private CancellationTokenSource cancellationToken;
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private bool displayUpdateRequired = true;
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protected TabbableOnlineOverlay(OverlayColourScheme colourScheme)
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: base(colourScheme)
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{
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}
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[BackgroundDependencyLoader]
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private void load(IAPIProvider api)
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{
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apiState.BindTo(api.State);
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apiState.BindValueChanged(onlineStateChanged, true);
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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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Header.Current.BindValueChanged(tab => OnTabChanged(tab.NewValue));
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}
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protected override void PopIn()
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{
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base.PopIn();
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// We don't want to create a new display on every call, only when exiting from fully closed state.
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if (displayUpdateRequired)
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{
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Header.Current.TriggerChange();
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displayUpdateRequired = false;
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}
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}
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protected override void PopOutComplete()
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{
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base.PopOutComplete();
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LoadDisplay(Empty());
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displayUpdateRequired = true;
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}
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protected void LoadDisplay(Drawable display)
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{
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ScrollFlow.ScrollToStart();
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LoadComponentAsync(display, loaded =>
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{
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Loading.Hide();
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Child = loaded;
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}, (cancellationToken = new CancellationTokenSource()).Token);
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}
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protected virtual void OnTabChanged(TEnum tab)
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{
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cancellationToken?.Cancel();
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Loading.Show();
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if (!API.IsLoggedIn)
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{
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LoadDisplay(Empty());
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return;
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}
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CreateDisplayToLoad(tab);
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}
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protected abstract void CreateDisplayToLoad(TEnum tab);
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private void onlineStateChanged(ValueChangedEvent<APIState> state) => Schedule(() =>
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{
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if (State.Value == Visibility.Hidden)
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return;
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Header.Current.TriggerChange();
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});
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protected override void Dispose(bool isDisposing)
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{
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cancellationToken?.Cancel();
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base.Dispose(isDisposing);
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}
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}
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}
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