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osu-lazer/osu.Game/Screens/OnlinePlay/DrawableRoomPlaylist.cs
2021-11-26 17:40:45 +09:00

98 lines
3.3 KiB
C#

// 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.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using osu.Framework.Bindables;
using osu.Framework.Extensions.IEnumerableExtensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Graphics.Containers;
using osu.Game.Online.Rooms;
using osuTK;
namespace osu.Game.Screens.OnlinePlay
{
public class DrawableRoomPlaylist : OsuRearrangeableListContainer<PlaylistItem>
{
public readonly Bindable<PlaylistItem> SelectedItem = new Bindable<PlaylistItem>();
private readonly bool allowEdit;
private readonly bool allowSelection;
private readonly bool showItemOwner;
public DrawableRoomPlaylist(bool allowEdit, bool allowSelection, bool reverse = false, bool showItemOwner = false)
{
this.allowEdit = allowEdit;
this.allowSelection = allowSelection;
this.showItemOwner = showItemOwner;
((ReversibleFillFlowContainer)ListContainer).Reverse = reverse;
}
protected override void LoadComplete()
{
base.LoadComplete();
// Scheduled since items are removed and re-added upon rearrangement
Items.CollectionChanged += (_, args) => Schedule(() =>
{
switch (args.Action)
{
case NotifyCollectionChangedAction.Remove:
if (allowSelection && args.OldItems.Contains(SelectedItem))
SelectedItem.Value = null;
break;
}
});
}
protected override ScrollContainer<Drawable> CreateScrollContainer() => base.CreateScrollContainer().With(d =>
{
d.ScrollbarVisible = false;
});
protected override FillFlowContainer<RearrangeableListItem<PlaylistItem>> CreateListFillFlowContainer() => new ReversibleFillFlowContainer
{
Spacing = new Vector2(0, 2)
};
protected override OsuRearrangeableListItem<PlaylistItem> CreateOsuDrawable(PlaylistItem item) => new DrawableRoomPlaylistItem(item, allowEdit, allowSelection, showItemOwner)
{
SelectedItem = { BindTarget = SelectedItem },
RequestDeletion = requestDeletion
};
private void requestDeletion(PlaylistItem item)
{
if (allowSelection && SelectedItem.Value == item)
{
if (Items.Count == 1)
SelectedItem.Value = null;
else
SelectedItem.Value = Items.GetNext(item) ?? Items[^2];
}
Items.Remove(item);
}
private class ReversibleFillFlowContainer : FillFlowContainer<RearrangeableListItem<PlaylistItem>>
{
private bool reverse;
public bool Reverse
{
get => reverse;
set
{
reverse = value;
Invalidate();
}
}
public override IEnumerable<Drawable> FlowingChildren => Reverse ? base.FlowingChildren.OrderBy(d => -GetLayoutPosition(d)) : base.FlowingChildren;
}
}
}