void SetupCollectionItems <T>(IReactiveList <T> src, IReactiveList <IHierarchicalLibraryItem> dst,
Func <T, bool> predicate = null) where T : Collection
{
lock (src) {
var srcF = predicate == null ? src : src.Where(predicate);
lock (dst)
dst.AddRange(srcF.Select(CreateCustomModSet));
_disposables.Add(src.TrackChanges(
x => dst.AddLocked(CreateCustomModSet(x)),
x => {
lock (CollectionsGroup.Children)
dst.RemoveLocked(GetCollection(x));
},
reset => {
lock (dst) {
lock (CollectionsGroup.Children)
dst.RemoveAll(GetCollections().ToArray());
dst.AddRange(reset.Select(CreateCustomModSet));
}
}, predicate));
}
}
