def __getattr__(pm, key):
"""look up default property values."""
sd = schemadict(implementedBy(pm))
# should we raise ``AttributeError``, when ``default`` is ``None``?
if key in sd:
return sd[key].default
raise AttributeError(key)
def __get__(self, instance, cls=None):
if instance is None:
# class level access
return _properties_from_schema(schemadict(implmentedBy(cls)), None)
else:
return _properties_from_instance.__of__(instance)
# override ``PropertyManager`` methods
# we are not extensible -- maybe, we should provide our own
# template instead, to get rid of the ``management_page_charset`` hackles???
manage_propertiesForm = pmm.DTMLFile("dtml/properties", pmm.__dict__, property_extensible_schema__=False)
def _not_extensible(*args):
raise NotImplementedError("property schema not extensible")
_setProperty = _not_extensible
_delProperty = _not_extensible
manage_addProperty = _not_extensible
_properties_from_instance = ComputedAttribute(
lambda instance: _properties_from_schema(schemadict(providedBy(instance)), instance), True
)
def _properties_from_schema(sd, context):
"""derive property descriptions from schema dict *sd*.
*context* is used to access ``management_page_charset`` in order
to determine whether we can use unicode properties.
"""
mpc = getattr(context, "management_page_charset", None)
if callable(mpc):
mpc = mpc()
uprops = mpc is None or mpc.upper() == "UTF-8"
def u(t):
def __getattr__(pm, key):
"""look up default property values."""
sd = schemadict(implementedBy(pm))
# should we raise ``AttributeError``, when ``default`` is ``None``?
if key in sd: return sd[key].default
raise AttributeError(key)
def __get__(self, instance, cls=None):
if instance is None:
# class level access
return _properties_from_schema(schemadict(implmentedBy(cls)), None)
else:
return _properties_from_instance.__of__(instance)
# we are not extensible -- maybe, we should provide our own
# template instead, to get rid of the ``management_page_charset`` hackles???
manage_propertiesForm = pmm.DTMLFile('dtml/properties',
pmm.__dict__,
property_extensible_schema__=False)
def _not_extensible(*args):
raise NotImplementedError('property schema not extensible')
_setProperty = _not_extensible
_delProperty = _not_extensible
manage_addProperty = _not_extensible
_properties_from_instance = ComputedAttribute(
lambda instance: _properties_from_schema(schemadict(providedBy(instance)),
instance), True)
def _properties_from_schema(sd, context):
"""derive property descriptions from schema dict *sd*.
*context* is used to access ``management_page_charset`` in order
to determine whether we can use unicode properties.
"""
mpc = getattr(context, 'management_page_charset', None)
if callable(mpc): mpc = mpc()
uprops = mpc is None or mpc.upper() == 'UTF-8'
def u(t):
return uprops and 'u' + t or t
