playtest-unity/playtest/Library/PackageCache/com.unity.timeline@1.7.4/Editor/Undo/UndoScope.cs

86 lines
2.3 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine.Timeline;
using Object = UnityEngine.Object;
namespace UnityEditor.Timeline
{
/// <summary>
/// Disposable scope object used to collect multiple items for Undo.
/// Automatically filters out duplicates
/// </summary>
struct UndoScope : IDisposable
{
private static readonly HashSet<UnityEngine.Object> s_ObjectsToUndo = new HashSet<Object>();
private string m_Name;
public UndoScope(string name)
{
m_Name = name;
}
public void Dispose()
{
ApplyUndo(m_Name);
}
public void AddObject(UnityEngine.Object asset)
{
if (asset != null)
s_ObjectsToUndo.Add(asset);
}
public void AddClip(TimelineClip clip, bool includeAsset)
{
if (clip != null && clip.GetParentTrack() != null)
s_ObjectsToUndo.Add(clip.GetParentTrack());
if (includeAsset && clip != null && clip.asset != null)
s_ObjectsToUndo.Add(clip.asset);
}
public void Add(IEnumerable<TrackAsset> tracks)
{
if (tracks == null)
return;
foreach (var track in tracks)
AddObject(track);
}
public void Add(IEnumerable<TimelineClip> clips, bool includeAssets)
{
if (clips == null)
return;
foreach (var clip in clips)
{
AddClip(clip, includeAssets);
}
}
public void Add(IEnumerable<IMarker> markers)
{
if (markers == null)
return;
foreach (var marker in markers)
{
if (marker is Object o)
AddObject(o);
else if (marker != null)
AddObject(marker.parent);
}
}
private static void ApplyUndo(string name)
{
if (s_ObjectsToUndo.Count == 1)
TimelineUndo.PushUndo(s_ObjectsToUndo.First(), name);
else if (s_ObjectsToUndo.Count > 1)
TimelineUndo.PushUndo(s_ObjectsToUndo.ToArray(), name);
s_ObjectsToUndo.Clear();
}
}
}