UnityでAnimationClipに設定されているAnimationEventの一覧を表示する

AnimationEventView.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class AnimationEventView : EditorWindow
{
    [MenuItem("Editor/Animation Event View")]
    public static void Open()
    {
        EditorWindow.GetWindow<AnimationEventView>().Show();
    }

    void OnSelectionChange()
    {
        var clip = Selection.activeObject as AnimationClip;

        if (clip == null)
        {
            return;
        }

        Repaint();
    }

    AnimationClip _clip;
    int _fps = 30;
    bool _lock = false;

    enum TimeView
    {
        Time,
        Frame
    }

    enum ParameterView
    {
        Float,
        Int,
        String
    }

    TimeView _timeView = TimeView.Frame;
    ParameterView _paramView = ParameterView.Int;

    string _functionName;
    float _floatParam;
    int _intParam;

    void DrawAnimationEvent(AnimationClip clip)
    {
        _lock = EditorGUILayout.Toggle("Lock", _lock);
        _timeView = (TimeView)EditorGUILayout.EnumPopup("Time/Frame", _timeView);

        if (_timeView == TimeView.Frame)
        {
            using (new EditorGUI.IndentLevelScope())
            {
                _fps = EditorGUILayout.IntField("Frame Rate", _fps);
            }
        }
        _paramView = (ParameterView)EditorGUILayout.EnumPopup("Parameter Type", _paramView);

        if (clip == null)
        {
            return;
        }

        EditorGUILayout.Space();

        EditorGUILayout.LabelField(clip.name);

        var events = clip.events;

        if (events.Length > 0)
        {

            EditorGUILayout.BeginVertical("box");

            foreach (var e in events)
            {
                using (new EditorGUILayout.HorizontalScope())
                {
                    if (_timeView == TimeView.Frame)
                    {
                        int frame = (int)(e.time * _fps);
                        EditorGUILayout.IntField("time", frame);
                    }
                    else
                    {
                        EditorGUILayout.FloatField("time", e.time);
                    }
                    e.functionName = EditorGUILayout.TextField(e.functionName);

                    if (_paramView == ParameterView.Float)
                    {
                        EditorGUILayout.FloatField("float", e.floatParameter);
                    }
                    else if (_paramView == ParameterView.Int)
                    {
                        EditorGUILayout.IntField("int", e.intParameter);
                    }
                    else if (_paramView == ParameterView.String)
                    {
                        EditorGUILayout.TextField("string", e.stringParameter);
                    }
                }
            }

            EditorGUILayout.EndVertical();
        }
    }

    private void OnGUI()
    {
        if (!_lock)
        {
            _clip = Selection.activeObject as AnimationClip;
        }
        DrawAnimationEvent(_clip);
    }
}