def adjust(self, idx, orig_len, new_len):
        shift = new_len - orig_len
        for key, region in self.regions.items():
            if region[0] > idx:
                region[0] += shift
                region[1] += shift
            elif region[1] > idx or region[0] == idx:
                region[1] += shift
Set the label of this field.
dataset/ETHPy150Open divmain/GitSavvy/common/ui.py/Interface.adjust--crossover with--dataset/ETHPy150Open CouchPotato/CouchPotatoServer/libs/xmpp/protocol.py/DataField.setLabel