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osu-lazer/osu.Game/Screens/OnlinePlay/Components/ListingPollingComponent.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.
using System.Linq;
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using System.Threading.Tasks;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
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using osu.Game.Online.Rooms;
using osu.Game.Screens.OnlinePlay.Lounge.Components;
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namespace osu.Game.Screens.OnlinePlay.Components
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{
/// <summary>
/// A <see cref="RoomPollingComponent"/> that polls for the lounge listing.
/// </summary>
public class ListingPollingComponent : RoomPollingComponent
{
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public IBindable<bool> InitialRoomsReceived => initialRoomsReceived;
private readonly Bindable<bool> initialRoomsReceived = new Bindable<bool>();
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public readonly Bindable<FilterCriteria> Filter = new Bindable<FilterCriteria>();
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[BackgroundDependencyLoader]
private void load()
{
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Filter.BindValueChanged(_ =>
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{
RoomManager.ClearRooms();
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initialRoomsReceived.Value = false;
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if (IsLoaded)
PollImmediately();
});
}
private GetRoomsRequest pollReq;
protected override Task Poll()
{
if (!API.IsLoggedIn)
return base.Poll();
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if (Filter.Value == null)
return base.Poll();
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var tcs = new TaskCompletionSource<bool>();
pollReq?.Cancel();
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pollReq = new GetRoomsRequest(Filter.Value.Status, Filter.Value.Category);
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pollReq.Success += result =>
{
foreach (var existing in RoomManager.Rooms.ToArray())
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{
if (result.All(r => r.RoomID.Value != existing.RoomID.Value))
RoomManager.RemoveRoom(existing);
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}
foreach (var incoming in result)
{
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incoming.RemoveExpiredPlaylistItems();
RoomManager.AddOrUpdateRoom(incoming);
}
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initialRoomsReceived.Value = true;
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tcs.SetResult(true);
};
pollReq.Failure += _ => tcs.SetResult(false);
API.Queue(pollReq);
return tcs.Task;
}
}
}