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Code Issues Releases Wiki Activity

Change to BindableList to notify of changes

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This commit is contained in:
smoogipoo 2020-09-02 20:44:26 +09:00
parent 9dde37fe40
commit 6d5e155106
2 changed files with 38 additions and 7 deletions
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4
osu.Game/Collections/CollectionManager.cs
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@ -74,9 +74,7 @@ namespace osu.Game.Collections
for (int i = 0; i < collectionCount; i++)
{
var collection = new BeatmapCollection { Name = reader.ReadString() };
int mapCount = reader.ReadInt32();
collection.Beatmaps.Capacity = mapCount;
for (int j = 0; j < mapCount; j++)
{
@ -99,6 +97,6 @@ namespace osu.Game.Collections
{
public string Name;
public readonly List<BeatmapInfo> Beatmaps = new List<BeatmapInfo>();
public readonly BindableList<BeatmapInfo> Beatmaps = new BindableList<BeatmapInfo>();
}
}

41
osu.Game/Screens/Select/FilterControl.cs
View File

@ -2,6 +2,7 @@
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Collections.Specialized;
using System.Linq;
using JetBrains.Annotations;
using osu.Framework.Allocation;
@ -214,11 +215,21 @@ namespace osu.Game.Screens.Select
private void load(CollectionManager collectionManager)
{
collections.BindTo(collectionManager.Collections);
collections.CollectionChanged += (_, __) => updateItems();
updateItems();
collections.CollectionChanged += (_, __) => collectionsChanged();
collectionsChanged();
}
private void updateItems()
protected override void LoadComplete()
{
base.LoadComplete();
Current.BindValueChanged(filterChanged);
}
/// <summary>
/// Occurs when a collection has been added or removed.
/// </summary>
private void collectionsChanged()
{
var selectedItem = SelectedItem?.Value?.Collection;
@ -226,7 +237,29 @@ namespace osu.Game.Screens.Select
filters.Add(new CollectionFilter(null));
filters.AddRange(collections.Select(c => new CollectionFilter(c)));
Current.Value = filters.FirstOrDefault(f => f.Collection == selectedItem) ?? filters[0];
Current.Value = filters.SingleOrDefault(f => f.Collection == selectedItem) ?? filters[0];
}
/// <summary>
/// Occurs when the <see cref="CollectionFilter"/> selection has changed.
/// </summary>
private void filterChanged(ValueChangedEvent<CollectionFilter> filter)
{
if (filter.OldValue?.Collection != null)
filter.OldValue.Collection.Beatmaps.CollectionChanged -= filterBeatmapsChanged;
if (filter.NewValue?.Collection != null)
filter.NewValue.Collection.Beatmaps.CollectionChanged += filterBeatmapsChanged;
}
/// <summary>
/// Occurs when the beatmaps contained by a <see cref="BeatmapCollection"/> have changed.
/// </summary>
private void filterBeatmapsChanged(object sender, NotifyCollectionChangedEventArgs e)
{
// The filtered beatmaps have changed, without the filter having changed itself. So a change in filter must be notified.
// Note that this does NOT propagate to bound bindables, so the FilterControl must bind directly to the value change event of this bindable.
Current.TriggerChange();
}
protected override string GenerateItemText(CollectionFilter item) => item.Collection?.Name ?? "All beatmaps";