Initial Commit

Library/PackageCache/com.unity.timeline@1.5.4/Editor/Activation/ActivationTrackEditor.cs

@@ -0,0 +1,56 @@
+using JetBrains.Annotations;
+using UnityEngine;
+using UnityEngine.Timeline;
+using UnityEngine.Playables;
+
+namespace UnityEditor.Timeline
+{
+    [UsedImplicitly]
+    [CustomTimelineEditor(typeof(ActivationTrack))]
+    class ActivationTrackEditor : TrackEditor
+    {
+        static readonly string ClipText = L10n.Tr("Active");
+
+        static readonly string k_ErrorParentString = L10n.Tr("The bound GameObject is a parent of the PlayableDirector.");
+        static readonly string k_ErrorString = L10n.Tr("The bound GameObject contains the PlayableDirector.");
+
+        public override TrackDrawOptions GetTrackOptions(TrackAsset track, Object binding)
+        {
+            var options = base.GetTrackOptions(track, binding);
+            options.errorText = GetErrorText(track, binding);
+            return options;
+        }
+
+        string GetErrorText(TrackAsset track, Object binding)
+        {
+            var gameObject = binding as GameObject;
+            var currentDirector = TimelineEditor.inspectedDirector;
+            if (gameObject != null && currentDirector != null)
+            {
+                var director = gameObject.GetComponent<PlayableDirector>();
+                if (currentDirector == director)
+                {
+                    return k_ErrorString;
+                }
+
+                if (currentDirector.gameObject.transform.IsChildOf(gameObject.transform))
+                {
+                    return k_ErrorParentString;
+                }
+            }
+
+            return base.GetErrorText(track, binding, TrackBindingErrors.PrefabBound);
+        }
+
+        public override void OnCreate(TrackAsset track, TrackAsset copiedFrom)
+        {
+            // Add a default clip to the newly created track
+            if (copiedFrom == null)
+            {
+                var clip = track.CreateClip(0);
+                clip.displayName = ClipText;
+                clip.duration = System.Math.Max(clip.duration, track.timelineAsset.duration * 0.5f);
+            }
+        }
+    }
+}