1 files changed, 116 insertions, 0 deletions
diff --git a/Library/PackageCache/com.unity.timeline@1.2.13/Editor/Items/ItemsUtils.cs b/Library/PackageCache/com.unity.timeline@1.2.13/Editor/Items/ItemsUtils.cs
new file mode 100644
index 0000000..90e7985
--- /dev/null
+++ b/Library/PackageCache/com.unity.timeline@1.2.13/Editor/Items/ItemsUtils.cs
@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine.Timeline;
+
+namespace UnityEditor.Timeline
+{
+    static class ItemsUtils
+    {
+        static readonly Dictionary<TimelineClip, ClipItem> s_ClipCache = new Dictionary<TimelineClip, ClipItem>();
+        static readonly Dictionary<IMarker, MarkerItem> s_MarkerCache = new Dictionary<IMarker, MarkerItem>();
+
+        public static IEnumerable<ItemsPerTrack> ToItemsPerTrack(this IEnumerable<ITimelineItem> items)
+        {
+            var groupedItems = items.GroupBy(c => c.parentTrack);
+            foreach (var group in groupedItems)
+            {
+                yield return new ItemsPerTrack(group.Key, group.ToArray());
+            }
+        }
+
+        public static ITimelineItem ToItem(this TimelineClip clip)
+        {
+            if (s_ClipCache.ContainsKey(clip))
+                return s_ClipCache[clip];
+
+            var ret = new ClipItem(clip);
+            s_ClipCache.Add(clip, ret);
+            return ret;
+        }
+
+        public static ITimelineItem ToItem(this IMarker marker)
+        {
+            if (s_MarkerCache.ContainsKey(marker))
+                return s_MarkerCache[marker];
+
+            var ret = new MarkerItem(marker);
+            s_MarkerCache.Add(marker, ret);
+            return ret;
+        }
+
+        public static IEnumerable<ITimelineItem> ToItems(this IEnumerable<TimelineClip> clips)
+        {
+            return clips.Select(ToItem);
+        }
+
+        public static IEnumerable<ITimelineItem> ToItems(this IEnumerable<IMarker> markers)
+        {
+            return markers.Select(ToItem);
+        }
+
+        public static IEnumerable<ITimelineItem> GetItems(this TrackAsset track)
+        {
+            var list = track.clips.Select(clip => (ITimelineItem) new ClipItem(clip)).ToList();
+            list.AddRange(track.GetMarkers().Select(marker => (ITimelineItem) new MarkerItem(marker)));
+
+            list = list.OrderBy(x => x.start).ThenBy(x => x.end).ToList();
+            return list;
+        }
+
+        public static void GetItemRange(this TrackAsset track, out double start, out double end)
+        {
+            start = 0;
+            end = 0;
+            var items = track.GetItems().ToList();
+            if (items.Any())
+            {
+                start = items.Min(p => p.start);
+                end = items.Max(p => p.end);
+            }
+        }
+
+        public static IEnumerable<ITimelineItem> GetItemsExcept(this TrackAsset track, IEnumerable<ITimelineItem> items)
+        {
+            return GetItems(track).Except(items);
+        }
+
+        public static IEnumerable<Type> GetItemTypes(IEnumerable<ITimelineItem> items)
+        {
+            var types = new List<Type>();
+            if (items.OfType<ClipItem>().Any())
+                types.Add(typeof(ClipItem));
+            if (items.OfType<MarkerItem>().Any())
+                types.Add(typeof(MarkerItem));
+
+            return types;
+        }
+
+        public static IEnumerable<Type> GetItemTypes(IEnumerable<ItemsPerTrack> itemsGroups)
+        {
+            return GetItemTypes(itemsGroups.SelectMany(i => i.items)).Distinct();
+        }
+
+        public static void SetItemsStartTime(IEnumerable<ItemsPerTrack> newItems, double time)
+        {
+            var startTimes = newItems.Select(d => d.items.Min(x => x.start)).ToList();
+            var min = startTimes.Min();
+            startTimes = startTimes.Select(x => x - min + time).ToList();
+
+            for (int i = 0; i < newItems.Count(); ++i)
+                EditModeUtils.SetStart(newItems.ElementAt(i).items, startTimes[i]);
+        }
+
+        public static double TimeGapBetweenItems(ITimelineItem leftItem, ITimelineItem rightItem, WindowState state)
+        {
+            if (leftItem is MarkerItem && rightItem is MarkerItem)
+            {
+                var markerType = ((MarkerItem)leftItem).marker.GetType();
+                var gap = state.PixelDeltaToDeltaTime(StyleManager.UssStyleForType(markerType).fixedWidth);
+                return gap;
+            }
+
+            return 0.0;
+        }
+    }
+}