| """ |
| Dict that has a callback on all updates |
| """ |
| |
| class UpdateDict(dict): |
| updated = None |
| updated_args = None |
| def _updated(self): |
| """ |
| Assign to new_dict.updated to track updates |
| """ |
| updated = self.updated |
| if updated is not None: |
| args = self.updated_args |
| if args is None: |
| args = (self,) |
| updated(*args) |
| def __setitem__(self, key, item): |
| dict.__setitem__(self, key, item) |
| self._updated() |
| def __delitem__(self, key): |
| dict.__delitem__(self, key) |
| self._updated() |
| def clear(self): |
| dict.clear(self) |
| self._updated() |
| def update(self, *args, **kw): |
| dict.update(self, *args, **kw) |
| self._updated() |
| def setdefault(self, key, failobj=None): |
| dict.setdefault(self, key, failobj) |
| self._updated() |
| def pop(self): |
| v = dict.pop(self) |
| self._updated() |
| return v |
| def popitem(self): |
| v = dict.popitem(self) |
| self._updated() |
| return v |
| |
