public ICollection <TItem> Collapse(IEnumerable <TItem> elements)
{
var worker = new WalkerWorker1 <TItem, TEdge> (this.Sink);
NeverRemove(worker, elements);
foreach (var item in elements)
{
worker.RemoveCollapsed(item, this.Sink);
}
RevoveEdgesOfChanged(worker);
CommitRemove(worker);
var result = worker.Affected;
if (RemoveOrphans)
{
var changes = new List <TItem> (worker.Affected);
worker.ChangesClear();
worker.RemoveOrphans(this.Sink);
CommitRemove(worker);
changes.AddRange(worker.Affected);
worker.ChangesClear();
result = changes;
}
return(result);
}
public virtual ICollection <TItem> CollapseToFocused(IEnumerable <TItem> elements)
{
var worker = new WalkerWorker1 <TItem, TEdge> (this.Sink);
NeverRemove(worker, elements);
foreach (TItem item in Sink)
{
worker.RemoveCollapsed(item, Sink);
worker.Remove(item);
}
CommitRemove(worker);
return(worker.Affected);
}
