Clarified some docstring

This commit is contained in:
ChrisLR 2022-03-22 10:25:54 -04:00
parent 909e34528b
commit cc258e6c1b

View file

@ -71,8 +71,8 @@ class TagField:
def __set_name__(self, owner, name): def __set_name__(self, owner, name):
""" """
Called when descriptor is first assigned to the class. Called when TagField is first assigned to the class.
It is called with the name of the field. It is called with the component class and the name of the field.
""" """
self._category_key = f"{owner.name}__{name}" self._category_key = f"{owner.name}__{name}"
tag_fields = getattr(owner, "_tag_fields", None) tag_fields = getattr(owner, "_tag_fields", None)
@ -82,6 +82,10 @@ class TagField:
tag_fields[name] = self tag_fields[name] = self
def __get__(self, instance, owner): def __get__(self, instance, owner):
"""
Called when retrieving the value of the TagField.
It is called with the component instance and the class.
"""
tag_value = instance.host.tags.get( tag_value = instance.host.tags.get(
default=self._default, default=self._default,
category=self._category_key, category=self._category_key,
@ -89,6 +93,11 @@ class TagField:
return tag_value return tag_value
def __set__(self, instance, value): def __set__(self, instance, value):
"""
Called when setting a value on the TagField.
It is called with the component instance and the value.
"""
tag_handler = instance.host.tags tag_handler = instance.host.tags
if self._enforce_single: if self._enforce_single:
tag_handler.clear(category=self._category_key) tag_handler.clear(category=self._category_key)
@ -99,4 +108,8 @@ class TagField:
) )
def __delete__(self, instance): def __delete__(self, instance):
"""
Used when 'del' is called on the TagField.
It is called with the component instance.
"""
instance.host.tags.clear(category=self._category_key) instance.host.tags.clear(category=self._category_key)