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84 lines
2.7 KiB
C#
84 lines
2.7 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System.Collections.Generic;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Game.Rulesets.Edit;
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using osu.Game.Rulesets.Objects;
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namespace osu.Game.Screens.Edit.Compose.Components
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{
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/// <summary>
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/// A container for <see cref="SelectionBlueprint{HitObject}"/> ordered by their <see cref="HitObject"/> start times.
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/// </summary>
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public sealed class HitObjectOrderedSelectionContainer : Container<SelectionBlueprint<HitObject>>
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{
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public override void Add(SelectionBlueprint<HitObject> drawable)
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{
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base.Add(drawable);
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bindStartTime(drawable);
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}
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public override bool Remove(SelectionBlueprint<HitObject> drawable)
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{
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if (!base.Remove(drawable))
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return false;
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unbindStartTime(drawable);
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return true;
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}
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public override void Clear(bool disposeChildren)
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{
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base.Clear(disposeChildren);
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unbindAllStartTimes();
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}
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private readonly Dictionary<SelectionBlueprint<HitObject>, IBindable> startTimeMap = new Dictionary<SelectionBlueprint<HitObject>, IBindable>();
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private void bindStartTime(SelectionBlueprint<HitObject> blueprint)
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{
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var bindable = blueprint.Item.StartTimeBindable.GetBoundCopy();
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bindable.BindValueChanged(_ =>
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{
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if (LoadState >= LoadState.Ready)
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SortInternal();
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});
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startTimeMap[blueprint] = bindable;
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}
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private void unbindStartTime(SelectionBlueprint<HitObject> blueprint)
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{
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startTimeMap[blueprint].UnbindAll();
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startTimeMap.Remove(blueprint);
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}
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private void unbindAllStartTimes()
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{
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foreach (var kvp in startTimeMap)
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kvp.Value.UnbindAll();
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startTimeMap.Clear();
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}
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protected override int Compare(Drawable x, Drawable y)
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{
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var xObj = (SelectionBlueprint<HitObject>)x;
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var yObj = (SelectionBlueprint<HitObject>)y;
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// Put earlier blueprints towards the end of the list, so they handle input first
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int i = yObj.Item.StartTime.CompareTo(xObj.Item.StartTime);
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if (i != 0) return i;
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// Fall back to end time if the start time is equal.
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i = yObj.Item.GetEndTime().CompareTo(xObj.Item.GetEndTime());
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return i == 0 ? CompareReverseChildID(y, x) : i;
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}
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}
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}
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