/// <summary>
/// Assigns the track to the specified group track.
/// </summary>
/// <param name="asset">The track to assign.</param>
/// <param name="group">The GroupTrack to assign the track to.</param>
/// <remarks>
/// Does not support assigning to a group in a different timeline.
/// </remarks>
public static void SetGroup(this TrackAsset asset, GroupTrack group)
{
const string undoString = "Reparent";
if (asset == null || asset == group || asset.parent == group)
{
return;
}
if (group != null && asset.timelineAsset != group.timelineAsset)
{
throw new InvalidOperationException("Cannot assign to a group in a different timeline");
}
TimelineUndo.PushUndo(asset, undoString);
var timeline = asset.timelineAsset;
var parentTrack = asset.parent as TrackAsset;
var parentTimeline = asset.parent as TimelineAsset;
if (parentTrack != null || parentTimeline != null)
{
TimelineUndo.PushUndo(asset.parent, undoString);
if (parentTimeline != null)
{
parentTimeline.RemoveTrack(asset);
}
else
{
parentTrack.RemoveSubTrack(asset);
}
}
if (group == null)
{
TimelineUndo.PushUndo(timeline, undoString);
asset.parent = asset.timelineAsset;
timeline.AddTrackInternal(asset);
}
else
{
TimelineUndo.PushUndo(group, undoString);
group.AddChild(asset);
}
}
public static void SetGroup(this TrackAsset asset, GroupTrack group)
{
if (!(asset == null) && !(asset == group) && !(asset.parent == group))
{
if (group != null && asset.timelineAsset != group.timelineAsset)
{
throw new InvalidOperationException("Cannot assign to a group in a different timeline");
}
TimelineUndo.PushUndo(asset, "Reparent");
TimelineAsset timelineAsset = asset.timelineAsset;
TrackAsset trackAsset = asset.parent as TrackAsset;
TimelineAsset timelineAsset2 = asset.parent as TimelineAsset;
if (trackAsset != null || timelineAsset2 != null)
{
TimelineUndo.PushUndo(asset.parent, "Reparent");
if (timelineAsset2 != null)
{
timelineAsset2.RemoveTrack(asset);
}
else
{
trackAsset.RemoveSubTrack(asset);
}
}
if (group == null)
{
TimelineUndo.PushUndo(timelineAsset, "Reparent");
asset.parent = asset.timelineAsset;
timelineAsset.AddTrackInternal(asset);
}
else
{
TimelineUndo.PushUndo(group, "Reparent");
group.AddChild(asset);
}
}
}