public bool ValidateMove(ItemsPerTrack itemsGroup)
{
var track = itemsGroup.targetTrack;
var items = itemsGroup.items;
if (EditModeUtils.IsInfiniteTrack(track))
{
double startTime;
double stopTime;
EditModeUtils.GetInfiniteClipBoundaries(track, out startTime, out stopTime);
return(items.All(item =>
!EditModeUtils.IsItemWithinRange(item, startTime, stopTime) &&
!EditModeUtils.IsRangeWithinItem(startTime, stopTime, item)));
}
var siblings = ItemsUtils.GetItemsExcept(itemsGroup.targetTrack, items);
return(items.All(item => EditModeMixUtils.GetPlacementValidity(item, siblings) == PlacementValidity.Valid));
}