def parent(self, index): if not index.isValid(): return QtCore.QModelIndex() childItem = index.internalPointer() parentItem = childItem.parent() if parentItem == self.rootItem: return QtCore.QModelIndex() return self.createIndex(parentItem.row(), 0, parentItem)
def index(self, row, column, parent): if not self.hasIndex(row, column, parent): return QtCore.QModelIndex() if parent is None or not parent.isValid(): parentItem = self.rootItem else: parentItem = parent.internalPointer() childItem = parentItem.child(row) if childItem: return self.createIndex(row, column, childItem) else: return QtCore.QModelIndex()