osu/osu.Game/Online/OnlineViewContainer.cs
2020-02-21 15:33:31 +09:00

101 lines
3.4 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 osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Graphics.UserInterface;
using osu.Game.Online.API;
using osu.Game.Online.Placeholders;
namespace osu.Game.Online
{
/// <summary>
/// A <see cref="Container"/> for displaying online content which require a local user to be logged in.
/// Shows its children only when the local user is logged in and supports displaying a placeholder if not.
/// </summary>
public abstract class OnlineViewContainer : Container, IOnlineComponent
{
protected LoadingSpinner LoadingSpinner { get; private set; }
protected override Container<Drawable> Content { get; } = new Container { RelativeSizeAxes = Axes.Both };
private readonly string placeholderMessage;
private Placeholder placeholder;
private const double transform_duration = 300;
[Resolved]
protected IAPIProvider API { get; private set; }
protected OnlineViewContainer(string placeholderMessage)
{
this.placeholderMessage = placeholderMessage;
}
[BackgroundDependencyLoader]
private void load()
{
InternalChildren = new Drawable[]
{
Content,
placeholder = new LoginPlaceholder(placeholderMessage),
LoadingSpinner = new LoadingSpinner
{
Alpha = 0,
}
};
}
protected override void LoadComplete()
{
base.LoadComplete();
API.Register(this);
}
public virtual void APIStateChanged(IAPIProvider api, APIState state)
{
switch (state)
{
case APIState.Offline:
PopContentOut(Content);
placeholder.ScaleTo(0.8f).Then().ScaleTo(1, 3 * transform_duration, Easing.OutQuint);
placeholder.FadeInFromZero(2 * transform_duration, Easing.OutQuint);
LoadingSpinner.Hide();
break;
case APIState.Online:
PopContentIn(Content);
placeholder.FadeOut(transform_duration / 2, Easing.OutQuint);
LoadingSpinner.Hide();
break;
case APIState.Failing:
case APIState.Connecting:
PopContentOut(Content);
LoadingSpinner.Show();
placeholder.FadeOut(transform_duration / 2, Easing.OutQuint);
break;
}
}
/// <summary>
/// Applies a transform to the online content to make it hidden.
/// </summary>
protected virtual void PopContentOut(Drawable content) => content.FadeOut(transform_duration / 2, Easing.OutQuint);
/// <summary>
/// Applies a transform to the online content to make it visible.
/// </summary>
protected virtual void PopContentIn(Drawable content) => content.FadeIn(transform_duration, Easing.OutQuint);
protected override void Dispose(bool isDisposing)
{
API?.Unregister(this);
base.Dispose(isDisposing);
}
}
}