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osu-lazer/osu.Game/Beatmaps/Drawables/BeatmapSetDownloader.cs
naoey 2a0b1f3615 Update direct panel download button for new design
- Add a download failed event to BeatmapManager
- Make DownloadButton aware of all 3 possible download states
- Change button appearance based on each state
2018-07-03 20:18:09 +05:30

111 lines
3.7 KiB
C#

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Configuration;
using osu.Framework.Graphics;
using osu.Game.Online.API.Requests;
namespace osu.Game.Beatmaps.Drawables
{
/// <summary>
/// A component to allow downloading of a beatmap set. Automatically handles state syncing between other instances.
/// </summary>
public class BeatmapSetDownloader : Component
{
private readonly BeatmapSetInfo set;
private readonly bool noVideo;
private BeatmapManager beatmaps;
/// <summary>
/// Holds the current download state of the beatmap, whether is has already been downloaded, is in progress, or is not downloaded.
/// </summary>
public readonly Bindable<DownloadStatus> DownloadState = new Bindable<DownloadStatus>();
public BeatmapSetDownloader(BeatmapSetInfo set, bool noVideo = false)
{
this.set = set;
this.noVideo = noVideo;
}
[BackgroundDependencyLoader]
private void load(BeatmapManager beatmaps)
{
this.beatmaps = beatmaps;
beatmaps.ItemAdded += setAdded;
beatmaps.ItemRemoved += setRemoved;
beatmaps.BeatmapDownloadBegan += downloadBegan;
beatmaps.BeatmapDownloadFailed += downloadFailed;
// initial value
if (set.OnlineBeatmapSetID != null && beatmaps.QueryBeatmapSets(s => s.OnlineBeatmapSetID == set.OnlineBeatmapSetID && !s.DeletePending).Any())
DownloadState.Value = DownloadStatus.Downloaded;
else if (beatmaps.GetExistingDownload(set) != null)
DownloadState.Value = DownloadStatus.Downloading;
else
DownloadState.Value = DownloadStatus.NotDownloaded;
}
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
if (beatmaps != null)
{
beatmaps.ItemAdded -= setAdded;
beatmaps.ItemRemoved -= setRemoved;
beatmaps.BeatmapDownloadBegan -= downloadBegan;
beatmaps.BeatmapDownloadFailed -= downloadFailed;
}
}
/// <summary>
/// Begin downloading the associated beatmap set.
/// </summary>
/// <returns>True if downloading began. False if an existing download is active or completed.</returns>
public void Download()
{
if (DownloadState.Value > DownloadStatus.NotDownloaded)
return;
beatmaps.Download(set, noVideo);
DownloadState.Value = DownloadStatus.Downloading;
}
private void setAdded(BeatmapSetInfo s)
{
if (s.OnlineBeatmapSetID == set.OnlineBeatmapSetID)
DownloadState.Value = DownloadStatus.Downloaded;
}
private void setRemoved(BeatmapSetInfo s)
{
if (s.OnlineBeatmapSetID == set.OnlineBeatmapSetID)
DownloadState.Value = DownloadStatus.NotDownloaded;
}
private void downloadBegan(DownloadBeatmapSetRequest d)
{
if (d.BeatmapSet.OnlineBeatmapSetID == set.OnlineBeatmapSetID)
DownloadState.Value = DownloadStatus.Downloading;
}
private void downloadFailed(DownloadBeatmapSetRequest d)
{
if (d.BeatmapSet.OnlineBeatmapSetID == set.OnlineBeatmapSetID)
DownloadState.Value = DownloadStatus.NotDownloaded;
}
public enum DownloadStatus
{
NotDownloaded,
Downloading,
Downloaded,
}
}
}