def create_filterable_names_list(names, filter_text=None, parent=None, model=NamesModel):
nl = QListView(parent)
nl.m = m = model(names, parent=nl)
m.filtered.connect(lambda all_items: nl.scrollTo(m.index(0)))
nl.setModel(m)
if model is NamesModel:
nl.d = NamesDelegate(nl)
nl.setItemDelegate(nl.d)
f = QLineEdit(parent)
f.setPlaceholderText(filter_text or '')
f.textEdited.connect(m.filter)
return nl, f
