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Merge pull request #2408 from smoogipoo/fix-leaderboard-nullref

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Fix various leaderboard data races
This commit is contained in:
Dean Herbert 2018-04-18 13:48:14 +09:00 committed by GitHub
commit 2b83d49862
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 51 additions and 39 deletions
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90
osu.Game/Screens/Select/Leaderboards/Leaderboard.cs
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@ -39,8 +39,9 @@ namespace osu.Game.Screens.Select.Leaderboards
private readonly LoadingAnimation loading;
private IEnumerable<Score> scores;
private ScheduledDelegate showScoresDelegate;
private IEnumerable<Score> scores;
public IEnumerable<Score> Scores
{
get { return scores; }
@ -59,29 +60,34 @@ namespace osu.Game.Screens.Select.Leaderboards
// ensure placeholder is hidden when displaying scores
PlaceholderState = PlaceholderState.Successful;
// schedule because we may not be loaded yet (LoadComponentAsync complains).
Schedule(() =>
var flow = scrollFlow = new FillFlowContainer<LeaderboardScore>
{
LoadComponentAsync(new FillFlowContainer<LeaderboardScore>
{
RelativeSizeAxes = Axes.X,
AutoSizeAxes = Axes.Y,
Spacing = new Vector2(0f, 5f),
Padding = new MarginPadding { Top = 10, Bottom = 5 },
ChildrenEnumerable = scores.Select((s, index) => new LeaderboardScore(s, index + 1) { Action = () => ScoreSelected?.Invoke(s) })
}, f =>
{
scrollContainer.Add(scrollFlow = f);
RelativeSizeAxes = Axes.X,
AutoSizeAxes = Axes.Y,
Spacing = new Vector2(0f, 5f),
Padding = new MarginPadding { Top = 10, Bottom = 5 },
ChildrenEnumerable = scores.Select((s, index) => new LeaderboardScore(s, index + 1) { Action = () => ScoreSelected?.Invoke(s) })
};
int i = 0;
foreach (var s in f.Children)
{
using (s.BeginDelayedSequence(i++ * 50, true))
s.Show();
}
// schedule because we may not be loaded yet (LoadComponentAsync complains).
showScoresDelegate?.Cancel();
if (!IsLoaded)
showScoresDelegate = Schedule(showScores);
else
showScores();
scrollContainer.ScrollTo(0f, false);
});
void showScores() => LoadComponentAsync(flow, _ =>
{
scrollContainer.Add(flow);
int i = 0;
foreach (var s in flow.Children)
{
using (s.BeginDelayedSequence(i++ * 50, true))
s.Show();
}
scrollContainer.ScrollTo(0f, false);
});
}
}
@ -103,6 +109,10 @@ namespace osu.Game.Screens.Select.Leaderboards
private PlaceholderState placeholderState;
/// <summary>
/// Update the placeholder visibility.
/// Setting this to anything other than PlaceholderState.Successful will cancel all existing retrieval requests and hide scores.
/// </summary>
protected PlaceholderState PlaceholderState
{
get { return placeholderState; }
@ -250,43 +260,45 @@ namespace osu.Game.Screens.Select.Leaderboards
loading.Show();
getScoresRequest = new GetScoresRequest(Beatmap, osuGame?.Ruleset.Value ?? Beatmap.Ruleset, Scope);
getScoresRequest.Success += r =>
getScoresRequest.Success += r => Schedule(() =>
{
Scores = r.Scores;
PlaceholderState = Scores.Any() ? PlaceholderState.Successful : PlaceholderState.NoScores;
};
getScoresRequest.Failure += onUpdateFailed;
});
getScoresRequest.Failure += e => Schedule(() =>
{
if (e is OperationCanceledException)
return;
PlaceholderState = PlaceholderState.NetworkFailure;
Logger.Error(e, @"Couldn't fetch beatmap scores!");
});
api.Queue(getScoresRequest);
}
private void onUpdateFailed(Exception e)
{
if (e is OperationCanceledException)
return;
PlaceholderState = PlaceholderState.NetworkFailure;
Logger.Error(e, @"Couldn't fetch beatmap scores!");
}
private Placeholder currentPlaceholder;
private void replacePlaceholder(Placeholder placeholder)
{
var existingPlaceholder = placeholderContainer.Children.LastOrDefault() as Placeholder;
if (placeholder != null && placeholder.Equals(existingPlaceholder))
if (placeholder != null && placeholder.Equals(currentPlaceholder))
return;
existingPlaceholder?.FadeOut(150, Easing.OutQuint).Expire();
currentPlaceholder?.FadeOut(150, Easing.OutQuint).Expire();
if (placeholder == null)
{
currentPlaceholder = null;
return;
}
Scores = null;
placeholderContainer.Add(placeholder);
placeholderContainer.Child = placeholder;
placeholder.ScaleTo(0.8f).Then().ScaleTo(1, fade_duration * 3, Easing.OutQuint);
placeholder.FadeInFromZero(fade_duration, Easing.OutQuint);
currentPlaceholder = placeholder;
}
protected override void Update()