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# This file is part of Tryton. The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
from trytond.pyson import PYSON, PYSONEncoder
from trytond.tools import cached_property
from .field import Field, get_eval_fields
def digits_validate(value):
if value:
assert isinstance(value, (tuple, str)), \
'digits must be a tuple or a string'
if isinstance(value, tuple):
for i in value:
assert isinstance(i, (int, PYSON)), \
'digits must be tuple of integers or PYSON'
if isinstance(i, PYSON):
assert i.types() == {int}, \
'PYSON digits must return an integer'
def _get_digits_depends(field):
if isinstance(field.digits, str):
return {field.digits}
else:
return get_eval_fields(field.digits)
class Float(Field):
'''
Define a float field (``float``).
'''
_type = 'float'
_sql_type = 'FLOAT'
_py_type = float
def __init__(self, string='', digits=None, help='', required=False,
readonly=False, domain=None, states=None,
on_change=None, on_change_with=None, depends=None,
context=None, loading='eager'):
'''
:param digits: a list of two integers defining the total
of digits and the number of decimals of the float.
'''
super(Float, self).__init__(string=string, help=help,
required=required, readonly=readonly, domain=domain, states=states,
on_change=on_change, on_change_with=on_change_with,
depends=depends, context=context, loading=loading)
self.__digits = None
self.digits = digits
__init__.__doc__ += Field.__init__.__doc__
def _get_digits(self):
return self.__digits
def _set_digits(self, value):
digits_validate(value)
self.__digits = value
digits = property(_get_digits, _set_digits)
def definition(self, model, language):
encoder = PYSONEncoder()
definition = super().definition(model, language)
definition['digits'] = encoder.encode(self.digits)
return definition
@cached_property
def display_depends(self):
return super().display_depends | _get_digits_depends(self)
@cached_property
def edition_depends(self):
return super().edition_depends | _get_digits_depends(self)
@cached_property
def validation_depends(self):
return super().validation_depends | _get_digits_depends(self)
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