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fields.py
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fields.py
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""" Basic fields """
import datetime, iso8601, decimal
from memphis import view
from memphis.view import formatter
from memphis.form import vocabulary
from memphis.form.field import field, Field, SequenceField
from memphis.form.interfaces import _, null, required, Invalid, ITerm
class InputField(Field, view.View):
title = None
lang = None
disabled = None
tabindex = None
lang = None
disabled = None
readonly = None
alt = None
accesskey = None
size = None
maxlength = None
def serialize(self, value):
return value
def deserialize(self, value):
return value
class TextField(InputField):
__doc__ = _(u'HTML Text input widget')
field('text')
klass = u'text-widget'
value = u''
tmpl_input = view.template(
"memphis.form:templates/fields/text_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/text_display.pt")
class Number(object):
num = None
def serialize(self, value):
if value is null:
return null
try:
return str(self.num(value))
except Exception:
raise Invalid(self,
_('"${val}" is not a number',
mapping={'val': value}),
)
def deserialize(self, value):
if value != 0 and not value:
return null
try:
return self.num(value)
except Exception:
raise Invalid(
self, _('"${val}" is not a number', mapping={'val':value}))
class IntegerField(Number, TextField):
__doc__ = _(u'Integer input widget')
field('int')
klass = u'int-widget'
value = 0
num = int
class FloatField(Number, TextField):
__doc__ = _(u'Float input widget')
field('float')
klass = u'float-widget'
num = float
class DecimalField(Number, TextField):
__doc__ = _(u'Decimal input widget')
field('decimal')
klass = u'decimal-widget'
def num(self, val):
return decimal.Decimal(str(val))
class TextAreaField(TextField):
__doc__ = _(u'HTML Text Area input widget')
field('textarea')
klass = u'textarea-widget'
value = u''
rows = 5
cols = 40
tmpl_input = view.template(
"memphis.form:templates/fields/textarea_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/textarea_display.pt")
class FileField(TextField):
__doc__ = _(u'HTML File input widget')
field('file')
klass = u'input-file'
tmpl_input = view.template(
"memphis.form:templates/fields/file_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/file_display.pt")
def extract(self, default=null):
value = self.params.get(self.name, default)
if hasattr(value, 'file'):
data = {}
data['fp'] = value.file
data['filename'] = value.filename
data['mimetype'] = value.type
data['size'] = value.length
return data
return default
class LinesField(TextAreaField):
__doc__ = _('Text area based widget, each line is treated as '
'sequence element.')
field('lines')
klass = u'textlines-widget'
def serialize(self, value):
if value is null or not value:
return null
try:
return u'\n'.join(value)
except Exception:
raise Invalid(self,
_('"${val}" is not a list',
mapping={'val': value}),
)
def deserialize(self, value):
if not value:
return null
try:
return [s.strip() for s in value.split()]
except Exception:
raise Invalid(self,
_('"${val}" is not a list',
mapping={'val': value}),
)
class PasswordField(TextField):
__doc__ = _('HTML Password input widget.')
field('password')
klass = u'password-widget'
tmpl_input = view.template(
"memphis.form:templates/fields/password_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/password_display.pt")
class CheckboxsField(SequenceField):
__doc__ = _('HTML Checkboxs input based widget.')
field('checkboxs')
klass = u'checkboxs-widget'
items = ()
tmpl_input = view.template(
"memphis.form:templates/fields/checkbox_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/checkbox_display.pt")
def isChecked(self, term):
return term.token in self.value
def update(self, request):
super(CheckboxsField, self).update(request)
self.items = []
for count, term in enumerate(self.terms):
checked = self.isChecked(term)
id = '%s-%i' % (self.id, count)
label = term.token
if ITerm.providedBy(term):
label = self.localizer.translate(term.title)
self.items.append(
{'id':id, 'name':self.name, 'value':term.token,
'label':label, 'checked':checked})
class CheckboxField(CheckboxsField):
__doc__ = _('Single checkbox widget.')
field('checkbox')
klass = u'single-checkbox-widget'
def updateTerms(self):
if self.terms is None:
self.terms = vocabulary.Vocabulary()
self.terms.terms = vocabulary.SimpleVocabulary(
vocabulary.SimpleTerm('selected', 'selected', ''))
return self.terms
class DateField(InputField):
__doc__ = _(u'Simple date input field.')
def serialize(self, value):
if value is null:
return null
if isinstance(value, datetime.datetime):
value = value.date()
if not isinstance(value, datetime.date):
raise Invalid(self,
_('"${val}" is not a date object',
mapping={'val': value}))
return value.isoformat()
def deserialize(self, value):
if not value:
return null
try:
result = iso8601.parse_date(value)
result = result.date()
except (iso8601.ParseError, TypeError):
try:
year, month, day = map(int, value.split('-', 2))
result = datetime.date(year, month, day)
except Exception, e:
raise Invalid(
self, _('Invalid date', mapping={'val': value, 'err': e}))
return result
class JSDateField(DateField):
__doc__ = _(u'Date input widget with JQuery Datepicker.')
field('date')
klass = u'date-widget'
value = u''
tmpl_input = view.template(
"memphis.form:templates/fields/date_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/date_display.pt")
class DateTimeField(InputField):
default_tzinfo = iso8601.iso8601.Utc()
def serialize(self, value):
if value is null or value is None:
return null
if type(value) is datetime.date: # cant use isinstance; dt subs date
value = datetime.datetime.combine(value, datetime.time())
if not isinstance(value, datetime.datetime):
raise Invalid(
self, _('"${val}" is not a datetime object',
mapping={'val':value}))
if value.tzinfo is None:
value = value.replace(tzinfo=self.default_tzinfo)
return value.isoformat()
def deserialize(self, value):
if not value:
return null
try:
result = iso8601.parse_date(
value, default_timezone=self.default_tzinfo)
except (iso8601.ParseError, TypeError), e:
try:
year, month, day = map(int, value.split('-', 2))
result = datetime.datetime(year, month, day,
tzinfo=self.default_tzinfo)
except Exception, e:
raise Invalid(self, _('Invalid date',
mapping={'val': value, 'err':e}))
return result
class JSDateTimeField(DateTimeField):
__doc__ = _(u'DateTime input widget with JQuery Datepicker.')
field('datetime')
klass = u'datetime-widget'
value = u''
time_part = null
date_part = null
tzinfo = None
tmpl_input = view.template(
"memphis.form:templates/fields/datetime_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/datetime_display.pt")
def update(self, request):
self.date_name = '%s.date'%self.name
self.time_name = '%s.time'%self.name
super(DateTimeField, self).update(request)
self.date_part = self.params.get(self.date_name, null)
self.time_part = self.params.get(self.time_name, null)
if self.value:
try:
raw = iso8601.parse_date(self.value)
except:
pass
else:
self.tzinfo = raw.tzinfo
if self.date_part is null:
self.date_part = raw.strftime('%m/%d/%Y')
if self.time_part is null:
self.time_part = raw.strftime(formatter.FORMAT.time_short)
if self.date_part is null:
self.date_part = u''
if self.time_part is null:
self.time_part = u''
def extract(self, default=null):
date = self.params.get(self.date_name, default)
if date is default:
return default
if not date:
return ''
time = self.params.get(self.time_name, default)
if time is default:
return default
if not time:
return ''
format = '%s %s'%(
'%m/%d/%Y',
formatter.FORMAT.time_short)
try:
dt = datetime.strptime('%s %s'%(date, time), format)
except ValueError:
return '--------'
return dt.replace(tzinfo=self.tzinfo).isoformat()
class RadioField(SequenceField, InputField):
__doc__ = _('HTML Radio input widget.')
field('radio')
klass = u'radio-widget'
items = ()
tmpl_input = view.template(
"memphis.form:templates/fields/radio_input.pt")
tmpl_display = view.template(
"memphis.form:templates/fields/radio_display.pt")
def isChecked(self, term):
return term.token == self.value
def update(self, request):
super(RadioField, self).update(request)
self.items = []
for count, term in enumerate(self.terms):
checked = self.isChecked(term)
id = '%s-%i' % (self.id, count)
label = term.token
if ITerm.providedBy(term):
label = self.localizer.translate(term.title)
self.items.append(
{'id':id, 'name':self.name, 'value':term.token,
'label':label, 'checked':checked})
def extract(self, default=null):
value = super(RadioField, self).extract(default)
if value is not default:
return value[0]
return value
class HorizontalRadioField(RadioField):
__doc__ = _('HTML Radio input widget.')
field('radio-horizontal')
tmpl_input = view.template(
"memphis.form:templates/fields/radiohoriz_input.pt")
class BoolField(HorizontalRadioField):
__doc__ = _('Boolean input widget.')
field('bool')
terms = vocabulary.SimpleVocabulary(
vocabulary.SimpleTerm(True, 'true', _('yes')),
vocabulary.SimpleTerm(False, 'false', _('no')))
class SelectField(SequenceField, InputField):
__doc__ = _('HTML Select input widget.')
klass = u'select-widget'
prompt = False
multiple = None
size = 1
field('select')
noValueMessage = _('no value')
promptMessage = _('select a value ...')
tmpl_input = view.template(
"memphis.form:templates/fields/select_input.pt",
title="HTML Select: input template")
tmpl_display = view.template(
"memphis.form:templates/fields/select_display.pt",
title="HTML Select: display template")
def isSelected(self, term):
return term.token in self.value
@property
def items(self):
if self.terms is None: # update() has not been called yet
return ()
items = []
if (not self.required or self.prompt) and self.multiple is None:
message = self.noValueMessage
if self.prompt:
message = self.promptMessage
items.append({
'id': self.id + '-novalue',
'value': self.noValueToken,
'content': message,
'selected': self.value == []
})
for count, term in enumerate(self.terms):
selected = self.isSelected(term)
id = '%s-%i' % (self.id, count)
content = term.token
if ITerm.providedBy(term):
content = self.localizer.translate(term.title)
items.append(
{'id':id, 'value':term.token, 'content':content,
'selected':selected})
return items
class MultiSelectField(SelectField):
__doc__ = _('HTML Multi Select input widget.')
size = 5
multiple = 'multiple'
field('multiselect')