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osu-lazer/osu.Game/Screens/OnlinePlay/Components/SelectionPollingComponent.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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#nullable disable
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using System.Threading.Tasks;
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using osu.Game.Online.Rooms;
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namespace osu.Game.Screens.OnlinePlay.Components
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{
/// <summary>
/// A <see cref="RoomPollingComponent"/> that polls for the currently-selected room.
/// </summary>
public class SelectionPollingComponent : RoomPollingComponent
{
private readonly Room room;
public SelectionPollingComponent(Room room)
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{
this.room = room;
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}
private GetRoomRequest lastPollRequest;
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protected override Task Poll()
{
if (!API.IsLoggedIn)
return base.Poll();
if (room.RoomID.Value == null)
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return base.Poll();
var tcs = new TaskCompletionSource<bool>();
lastPollRequest?.Cancel();
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var req = new GetRoomRequest(room.RoomID.Value.Value);
req.Success += result =>
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{
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result.RemoveExpiredPlaylistItems();
RoomManager.AddOrUpdateRoom(result);
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tcs.SetResult(true);
};
req.Failure += _ => tcs.SetResult(false);
API.Queue(req);
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lastPollRequest = req;
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return tcs.Task;
}
}
}