/usr/lib/python2.7/dist-packages/zope/formlib/boolwidgets.py is in python-zope.formlib 4.3.0a2-0ubuntu1.
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#
# Copyright (c) 2004 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Browser widgets for items
"""
__docformat__ = 'restructuredtext'
from zope.schema.vocabulary import SimpleVocabulary
from zope.formlib.widget import SimpleInputWidget, renderElement
from zope.formlib.widget import DisplayWidget
from zope.formlib.i18n import _
from zope.formlib.itemswidgets import RadioWidget
from zope.formlib.itemswidgets import SelectWidget, DropdownWidget
class CheckBoxWidget(SimpleInputWidget):
"""A checkbox widget used to display Bool fields.
For more detailed documentation, including sample code, see
``tests/test_checkboxwidget.py``.
"""
type = 'checkbox'
default = 0
extra = ''
def __init__(self, context, request):
super(CheckBoxWidget, self).__init__(context, request)
self.required = False
def __call__(self):
"""Render the widget to HTML."""
value = self._getFormValue()
if value == 'on':
kw = {'checked': 'checked'}
else:
kw = {}
return "%s %s" % (
renderElement(self.tag,
type='hidden',
name=self.name+".used",
id=self.name+".used",
value=""
),
renderElement(self.tag,
type=self.type,
name=self.name,
id=self.name,
cssClass=self.cssClass,
extra=self.extra,
value="on",
**kw),
)
def _toFieldValue(self, input):
"""Convert from HTML presentation to Python bool."""
return input == 'on'
def _toFormValue(self, value):
"""Convert from Python bool to HTML representation."""
return value and 'on' or ''
def hasInput(self):
"""Check whether the field is represented in the form."""
return self.name + ".used" in self.request.form or \
super(CheckBoxWidget, self).hasInput()
def _getFormInput(self):
"""Returns the form input used by `_toFieldValue`.
Return values:
``'on'`` checkbox is checked
``''`` checkbox is not checked
``None`` form input was not provided
"""
if self.request.get(self.name) == 'on':
return 'on'
elif self.name + '.used' in self.request:
return ''
else:
return None
def BooleanRadioWidget(field, request, true=_('on'), false=_('off')):
vocabulary = SimpleVocabulary.fromItems( ((true, True), (false, False)) )
widget = RadioWidget(field, vocabulary, request)
widget.required = False
return widget
def BooleanSelectWidget(field, request, true=_('on'), false=_('off')):
vocabulary = SimpleVocabulary.fromItems( ((true, True), (false, False)) )
widget = SelectWidget(field, vocabulary, request)
widget.size = 2
widget.required = False
return widget
def BooleanDropdownWidget(field, request, true=_('on'), false=_('off')):
vocabulary = SimpleVocabulary.fromItems( ((true, True), (false, False)) )
widget = DropdownWidget(field, vocabulary, request)
widget.required = False
return widget
class BooleanDisplayWidget(DisplayWidget):
_msg_true = _("True")
_msg_false = _("False")
def __call__(self):
if self._renderedValueSet():
value = self._data
else:
value = self.context.default
if value:
return self._msg_true
else:
return self._msg_false
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