public virtual Word AddWord(Word w)
{
if (!Words.Contains(w))
{
var vw = new CritWords(this, w);
CrwHelper.Add(vw);
w.AddCritWords(vw);
OnWordsChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, w));
}
return(w);
}
protected internal virtual void AddCritWords(CritWords crw)
{
Contract.Requires(crw != null);
Contract.Requires(crw.Crit.Words.Contains(this));
CrwHelper.Add(crw);
}
