def index(self, in_row, in_column, in_parent=None):
if not in_parent or not in_parent.isValid():
parent = self._root
else:
parent = in_parent.internalPointer()
if not QAbstractItemModel.hasIndex(self, in_row, in_column, in_parent):
return QModelIndex()
child = parent.child(in_row)
if child:
return QAbstractItemModel.createIndex(self, in_row, in_column,
child)
else:
return QModelIndex()
def parent(self, in_index):
if in_index.isValid():
p = in_index.internalPointer().parent()
if p:
return QAbstractItemModel.createIndex(self, p.row(), 0, p)
return QModelIndex()
