def __init__(self,
source: Any = None,
matcher=None,
suggesters: List[Suggester] = None,
choosers: List[Chooser] = None,
exclude: DialogFieldValue = None):
self._source = source
self._matcher = matcher
self._suggesters = suggesters if suggesters else []
self._choosers = choosers if choosers else []
self.__origin = FieldValue.empty()
self.__matched = FieldValue.empty()
self.__suggested = FieldValue.empty()
self._exclude = exclude # exclude is specially may be None
def value(self):
if not FieldValue.is_empty(self.__suggested):
return self.__suggested
elif not FieldValue.is_empty(self.__matched):
return self.__matched
else:
return FieldValue.empty()
def get_exclude(self, field_name) -> FieldValue:
"""
For internal needs exclude could be None, but for external needs everything should be FieldValue
"""
exclude = self._fields[field_name].exclude
if not exclude:
return FieldValue.empty()
return exclude
def suggest(self, form) -> DialogFieldValue:
LOG.info("Suggest field %s" % self._source)
for suggester in self._suggesters:
suggester_name = suggester.__class__.__name__
suggester_result = suggester(self, form)
LOG.info("%s -> Suggested value for field %s is %s" %
(suggester_name, self._source, suggester_result))
if suggester_result:
suggester_result_fieldvalue = self._to_suggest_fieldvalue(
suggester_result)
if FieldValue.is_suggested(suggester_result_fieldvalue):
choosers_result = self._choose(suggester_result)
result = suggester_result if not choosers_result else choosers_result
suggester_result_fieldvalue = self._to_suggest_fieldvalue(
result)
self.__suggested = suggester_result_fieldvalue
LOG.info("Suggested FieldValue for field %s is %s" %
(self._source, self.__suggested.__class__.__name__))
return self.__suggested
LOG.info("Suggested value for field %s is empty" % self._source)
return FieldValue.empty()
def suggested(self):
if self.__selected_field:
return self.__selected_field.suggested
return FieldValue.empty()
def matched(self):
if self.__selected_field:
return self.__selected_field.matched
return FieldValue.empty()
def origin(self):
if self.__selected_field:
return self.__selected_field.origin
return FieldValue.empty()
def value(self):
if self.__selected_field:
return self.__selected_field.value
return FieldValue.empty()
def suggest(self, form) -> DialogFieldValue:
if self.__selected_field:
return self.__selected_field.suggest(form)
return FieldValue.empty()