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using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEditor.IMGUI.Controls;
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using UnityEngine.Timeline;
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namespace UnityEditor.Timeline
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{
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static class KeyboardNavigation
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{
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public static void FrameTrackHeader(TreeViewItem treeItem = null)
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{
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if (TrackHeadActive())
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treeItem = treeItem ?? SelectionManager.SelectedTrackGUI().Last();
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else
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{
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var item = GetVisibleSelectedItems().LastOrDefault();
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treeItem = TimelineWindow.instance.allTracks.FirstOrDefault(
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x => item != null && x.track == item.parentTrack);
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}
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if (treeItem != null)
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TimelineWindow.instance.treeView.FrameItem(treeItem);
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}
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public static bool TrackHeadActive()
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{
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return SelectionManager.SelectedTracks().Any(x => x.IsVisibleInHierarchy()) && !ClipAreaActive();
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}
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public static bool ClipAreaActive()
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{
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return GetVisibleSelectedItems().Any();
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}
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public static IEnumerable<ITimelineItem> GetVisibleSelectedItems()
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{
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return SelectionManager.SelectedItems().Where(x => x.parentTrack.IsVisibleInHierarchy());
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}
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public static IEnumerable<TimelineTrackBaseGUI> GetVisibleTracks()
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{
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return TimelineWindow.instance.allTracks.Where(x => x.track.IsVisibleInHierarchy());
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}
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static TrackAsset PreviousTrack(this TrackAsset track)
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{
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var uiOrderTracks = GetVisibleTracks().Select(t => t.track).ToList();
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var selIdx = uiOrderTracks.IndexOf(track);
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return selIdx > 0 ? uiOrderTracks[selIdx - 1] : null;
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}
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static TrackAsset NextTrack(this TrackAsset track)
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{
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var uiOrderTracks = GetVisibleTracks().Select(t => t.track).ToList();
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var selIdx = uiOrderTracks.IndexOf(track);
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return selIdx < uiOrderTracks.Count - 1 && selIdx != -1 ? uiOrderTracks[selIdx + 1] : null;
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}
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static ITimelineItem PreviousItem(this ITimelineItem item, bool clipOnly)
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{
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var items = item.parentTrack.GetItems().ToArray();
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if (clipOnly)
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{
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items = items.Where(x => x is ClipItem).ToArray();
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}
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else
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{
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items = items.Where(x => x is MarkerItem).ToArray();
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}
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var idx = Array.IndexOf(items, item);
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return idx > 0 ? items[idx - 1] : null;
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}
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static ITimelineItem NextItem(this ITimelineItem item, bool clipOnly)
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{
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var items = item.parentTrack.GetItems().ToArray();
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if (clipOnly)
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{
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items = items.Where(x => x is ClipItem).ToArray();
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}
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else
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{
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items = items.Where(x => x is MarkerItem).ToArray();
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}
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var idx = Array.IndexOf(items, item);
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return idx < items.Length - 1 ? items[idx + 1] : null;
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}
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static bool FilterItems(ref List<ITimelineItem> items)
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{
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var clipOnly = false;
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if (items.Any(x => x is ClipItem))
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{
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items = items.Where(x => x is ClipItem).ToList();
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clipOnly = true;
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}
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return clipOnly;
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}
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static ITimelineItem GetClosestItem(TrackAsset track, ITimelineItem refItem)
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{
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var start = refItem.start;
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var end = refItem.end;
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var items = track.GetItems().ToList();
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if (refItem is ClipItem)
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{
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items = items.Where(x => x is ClipItem).ToList();
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}
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else
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{
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items = items.Where(x => x is MarkerItem).ToList();
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}
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if (!items.Any())
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return null;
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ITimelineItem ret = null;
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var scoreToBeat = double.NegativeInfinity;
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foreach (var item in items)
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{
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// test for overlap
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var low = Math.Max(item.start, start);
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var high = Math.Min(item.end, end);
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if (low <= high)
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{
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var score = high - low;
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if (score >= scoreToBeat)
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{
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scoreToBeat = score;
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ret = item;
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}
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}
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}
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return ret;
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}
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public static bool FocusFirstVisibleItem(IEnumerable<TrackAsset> focusTracks = null)
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{
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var timeRange = TimelineEditor.visibleTimeRange;
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var tracks = focusTracks ?? TimelineWindow.instance.treeView.visibleTracks.Where(x => x.IsVisibleInHierarchy() && x.GetItems().Any());
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var items = tracks.SelectMany(t => t.GetItems().OfType<ClipItem>().Where(x => x.end >= timeRange.x && x.end <= timeRange.y ||
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x.start >= timeRange.x && x.start <= timeRange.y)).ToList();
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var itemFullyInView = items.Where(x => x.end >= timeRange.x && x.end <= timeRange.y &&
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x.start >= timeRange.x && x.start <= timeRange.y);
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var itemToSelect = itemFullyInView.FirstOrDefault() ?? items.FirstOrDefault();
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if (itemToSelect != null && !itemToSelect.parentTrack.lockedInHierarchy)
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{
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SelectionManager.SelectOnly(itemToSelect);
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return true;
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}
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return false;
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}
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public static bool CollapseGroup(IEnumerable<TrackAsset> tracks)
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{
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if (!TrackHeadActive())
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return false;
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var didCollapse = false;
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foreach (TrackAsset track in tracks)
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{
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if (!track.GetChildTracks().Any())
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continue;
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if (!track.IsCollapsed())
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{
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didCollapse = true;
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track.SetCollapsed(true);
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}
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}
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if (didCollapse)
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{
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TimelineEditor.Refresh(RefreshReason.ContentsAddedOrRemoved);
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return true;
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}
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return SelectAndShowParentTrack(tracks.LastOrDefault());
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}
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static bool SelectAndShowParentTrack(TrackAsset track)
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{
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TrackAsset parent = track != null ? track.parent as TrackAsset : null;
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if (parent)
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{
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SelectionManager.SelectOnly(parent);
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FrameTrackHeader(GetVisibleTracks().First(x => x.track == parent));
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return true;
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}
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return false;
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}
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public static bool SelectLeftItem(bool shift = false)
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{
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if (ClipAreaActive())
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{
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var items = SelectionManager.SelectedItems().ToList();
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var clipOnly = FilterItems(ref items);
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var item = items.Last();
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var prev = item.PreviousItem(clipOnly);
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if (prev != null && !prev.parentTrack.lockedInHierarchy)
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{
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if (shift)
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{
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if (SelectionManager.Contains(prev))
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SelectionManager.Remove(item);
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SelectionManager.Add(prev);
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}
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else
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SelectionManager.SelectOnly(prev);
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TimelineHelpers.FrameItems(new[] {prev});
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}
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else if (item != null && !shift && item.parentTrack != TimelineEditor.inspectedAsset.markerTrack)
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SelectionManager.SelectOnly(item.parentTrack);
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return true;
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}
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return false;
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}
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public static bool SelectRightItem(bool shift = false)
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{
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if (ClipAreaActive())
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{
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var items = SelectionManager.SelectedItems().ToList();
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var clipOnly = FilterItems(ref items);
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var item = items.Last();
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var next = item.NextItem(clipOnly);
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if (next != null && !next.parentTrack.lockedInHierarchy)
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{
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if (shift)
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{
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if (SelectionManager.Contains(next))
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SelectionManager.Remove(item);
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SelectionManager.Add(next);
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}
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else
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SelectionManager.SelectOnly(next);
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TimelineHelpers.FrameItems(new[] {next});
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return true;
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}
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}
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return false;
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}
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public static bool UnCollapseGroup(IEnumerable<TrackAsset> tracks)
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{
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if (!TrackHeadActive())
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return false;
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var didUncollapse = false;
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foreach (TrackAsset track in tracks)
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{
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if (!track.GetChildTracks().Any())
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continue;
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if (track.IsCollapsed())
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{
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didUncollapse = true;
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track.SetCollapsed(false);
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}
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}
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if (didUncollapse)
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{
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TimelineEditor.Refresh(RefreshReason.ContentsAddedOrRemoved);
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return true;
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}
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return SelectFirstClipStartingFrom(tracks.Last());
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}
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static bool SelectFirstClipStartingFrom(TrackAsset track)
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{
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List<TrackAsset> visibleTracks = GetVisibleTracks().Select(x => x.track).ToList();
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int idx = visibleTracks.IndexOf(track);
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ITimelineItem item = null;
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for (int i = idx; i < visibleTracks.Count; ++i)
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{
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var items = visibleTracks[i].GetItems().OfType<ClipItem>();
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if (!items.Any() || visibleTracks[i].lockedInHierarchy)
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continue;
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item = items.First();
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break;
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}
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if (item != null)
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{
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SelectionManager.SelectOnly(item);
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TimelineHelpers.FrameItems(new[] { item });
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return true;
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}
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return false;
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}
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public static bool SelectUpTrack(bool shift = false)
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{
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if (TrackHeadActive())
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{
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var prevTrack = PreviousTrack(SelectionManager.SelectedTracks().Last());
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if (prevTrack != null)
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{
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if (shift)
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{
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if (SelectionManager.Contains(prevTrack))
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SelectionManager.Remove(SelectionManager.SelectedTracks().Last());
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SelectionManager.Add(prevTrack);
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}
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else
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SelectionManager.SelectOnly(prevTrack);
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FrameTrackHeader(GetVisibleTracks().First(x => x.track == prevTrack));
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}
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return true;
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}
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return false;
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}
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public static bool SelectUpItem()
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{
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if (ClipAreaActive())
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{
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var refItem = SelectionManager.SelectedItems().Last();
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var prevTrack = refItem.parentTrack.PreviousTrack();
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while (prevTrack != null)
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{
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var selectionItem = GetClosestItem(prevTrack, refItem);
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if (selectionItem == null || prevTrack.lockedInHierarchy)
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{
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prevTrack = prevTrack.PreviousTrack();
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continue;
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}
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SelectionManager.SelectOnly(selectionItem);
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TimelineHelpers.FrameItems(new[] {selectionItem});
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FrameTrackHeader(GetVisibleTracks().First(x => x.track == selectionItem.parentTrack));
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break;
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}
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return true;
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}
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return false;
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}
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public static bool SelectDownTrack(bool shift = false)
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{
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if (TrackHeadActive())
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{
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var nextTrack = SelectionManager.SelectedTracks().Last().NextTrack();
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if (nextTrack != null)
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{
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if (shift)
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{
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if (SelectionManager.Contains(nextTrack))
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SelectionManager.Remove(SelectionManager.SelectedTracks().Last());
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SelectionManager.Add(nextTrack);
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}
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else
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SelectionManager.SelectOnly(nextTrack);
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FrameTrackHeader(GetVisibleTracks().First(x => x.track == nextTrack));
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}
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return true;
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}
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return false;
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}
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public static bool SelectDownItem()
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{
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if (ClipAreaActive())
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{
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var refItem = SelectionManager.SelectedItems().Last();
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var nextTrack = refItem.parentTrack.NextTrack();
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while (nextTrack != null)
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{
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var selectionItem = GetClosestItem(nextTrack, refItem);
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if (selectionItem == null || nextTrack.lockedInHierarchy)
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{
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nextTrack = nextTrack.NextTrack();
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continue;
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}
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SelectionManager.SelectOnly(selectionItem);
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TimelineHelpers.FrameItems(new[] {selectionItem});
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FrameTrackHeader(GetVisibleTracks().First(x => x.track == selectionItem.parentTrack));
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break;
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}
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return true;
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}
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return false;
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}
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}
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}
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