def __delitem__(self, key):
key = str(key)
old_value = accessors.getitem(objects.itemsof(self), key, None)
if old_value is not None:
old_value.data_changed.unsubscribe(_notify)
accessors.delitem(objects.itemsof(self), key)
def __setitem__(self, key, value):
def _notify(obj, key_, value_):
self.data_changed(self, (key,) + key_, value_)
old_value, new_value = accessors.getitem(objects.itemsof(self), key, None), value
if old_value is not None:
old_value.data_changed.unsubscribe(_notify)
accessors.setitem(objects.itemsof(self), key, value)
if new_value is not None:
new_value.data_changed.subscribe(_notify)
def iter_paths_where(obj, predicate, path=None):
path = [] if path is None else path
for key, value in objects.itemsof(obj).items():
sub_path = path + [key]
if predicate(value):
yield sub_path
yield from iter_paths_where(value, predicate, sub_path)
def __getitem__(self, key):
return accessors.getitem(objects.itemsof(self), key)
def increment_angular(self):
items = objects.itemsof(self)
angular_count = sum(item.angular for item in items.values())
angular_count = (angular_count + 1) % len(items)
for i, item in enumerate(items.values()):
item.angular = i < angular_count