Initial Commit

Library/PackageCache/com.unity.timeline@1.5.4/Runtime/Utilities/TimelineCreateUtilities.cs

@@ -0,0 +1,142 @@
+using System;
+using System.Collections.Generic;
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+namespace UnityEngine.Timeline
+{
+    static class TimelineCreateUtilities
+    {
+        // based off of ObjectNames.GetUniqueName, but can exist in runtime
+        public static string GenerateUniqueActorName(List<ScriptableObject> tracks, string name)
+        {
+            if (!tracks.Exists(x => ((object)x) != null && x.name == name))
+                return name;
+
+            int numberInParentheses = 0;
+            string baseName = name;
+
+            if (!string.IsNullOrEmpty(name) && name[name.Length - 1] == ')')
+            {
+                int index = name.LastIndexOf('(');
+                if (index > 0)
+                {
+                    string numberString = name.Substring(index + 1, name.Length - index - 2);
+                    if (int.TryParse(numberString, out numberInParentheses))
+                    {
+                        numberInParentheses++;
+                        baseName = name.Substring(0, index);
+                    }
+                }
+            }
+
+            baseName = baseName.TrimEnd();
+
+            for (int i = numberInParentheses; i < numberInParentheses + 5000; i++)
+            {
+                if (i > 0)
+                {
+                    string result = string.Format("{0} ({1})", baseName, i);
+                    if (!tracks.Exists(x => ((object)x) != null && x.name == result))
+                        return result;
+                }
+            }
+
+            // Fallback
+            return name;
+        }
+
+        public static void SaveAssetIntoObject(Object childAsset, Object masterAsset)
+        {
+            if (childAsset == null || masterAsset == null)
+                return;
+
+            if ((masterAsset.hideFlags & HideFlags.DontSave) != 0)
+            {
+                childAsset.hideFlags |= HideFlags.DontSave;
+            }
+            else
+            {
+                childAsset.hideFlags |= HideFlags.HideInHierarchy;
+#if UNITY_EDITOR
+                if (!AssetDatabase.Contains(childAsset) && AssetDatabase.Contains(masterAsset))
+                    AssetDatabase.AddObjectToAsset(childAsset, masterAsset);
+#endif
+            }
+        }
+
+        public static void RemoveAssetFromObject(Object childAsset, Object masterAsset)
+        {
+            if (childAsset == null || masterAsset == null)
+                return;
+
+#if UNITY_EDITOR
+            if (AssetDatabase.Contains(childAsset) && AssetDatabase.Contains(masterAsset))
+                AssetDatabase.RemoveObjectFromAsset(childAsset);
+#endif
+        }
+
+        public static AnimationClip CreateAnimationClipForTrack(string name, TrackAsset track, bool isLegacy)
+        {
+            var timelineAsset = track != null ? track.timelineAsset : null;
+            var trackFlags = track != null ? track.hideFlags : HideFlags.None;
+
+            var curves = new AnimationClip
+            {
+                legacy = isLegacy,
+
+                name = name,
+
+                frameRate = timelineAsset == null
+                    ? TimelineAsset.EditorSettings.kDefaultFps
+                    : timelineAsset.editorSettings.fps
+            };
+
+            SaveAssetIntoObject(curves, timelineAsset);
+            curves.hideFlags = trackFlags & ~HideFlags.HideInHierarchy; // Never hide in hierarchy
+
+            TimelineUndo.RegisterCreatedObjectUndo(curves, "Create Curves");
+
+            return curves;
+        }
+
+        public static bool ValidateParentTrack(TrackAsset parent, Type childType)
+        {
+            if (childType == null || !typeof(TrackAsset).IsAssignableFrom(childType))
+                return false;
+
+            // no parent is valid for any type
+            if (parent == null)
+                return true;
+
+            // A track supports layers if it implements ILayerable. Only supported for parents that are
+            // the same exact type as the child class, and 1 level of nesting only
+            if (parent is ILayerable && !parent.isSubTrack && parent.GetType() == childType)
+                return true;
+
+            var attr = Attribute.GetCustomAttribute(parent.GetType(), typeof(SupportsChildTracksAttribute)) as SupportsChildTracksAttribute;
+            if (attr == null)
+                return false;
+
+            // group track case, accepts all
+            if (attr.childType == null)
+                return true;
+
+            // specific case. Specifies nesting level
+            if (childType == attr.childType)
+            {
+                int nestCount = 0;
+                var p = parent;
+                while (p != null && p.isSubTrack)
+                {
+                    nestCount++;
+                    p = p.parent as TrackAsset;
+                }
+
+                return nestCount < attr.levels;
+            }
+            return false;
+        }
+    }
+}