source: products/qPloneCaptchaField/branches/forPlone2.5.5/content/CaptchaField.py @ 2743

from zope import event
from zope.app.event import objectevent
from Products.CMFCore.permissions import View

from Products.Archetypes.atapi import *
from Products.ATContentTypes.content.base import registerATCT

from Products.PloneFormGen.content.fieldsBase import BareFieldSchema, BaseFormField, BaseFieldSchemaStringDefault
from Products.PloneFormGen.content.fields import FGStringField

from Products.qPloneCaptchaField.config import PROJECTNAME
from Products.qPloneCaptchaField.widgets.CaptchaWidget import CaptchaWidget

CAPTCHA_ID = 'key'

def finalizeCaptchaFieldSchema( schema ):
    schema['title'].default= 'key'
    for field in ('title', 
                  'description',
                  'required', 
                  'hidden', 
                  'fgTDefault', 
                  'fgTEnabled', 
                  'fgDefault',
                  'fgTValidator'):
        schema[field].widget.visible = {'view':'invisible','edit':'invisible'}

CaptchaFieldSchema = BaseFieldSchemaStringDefault.copy()
finalizeCaptchaFieldSchema( CaptchaFieldSchema )

def addCaptchaField(self, id, **kwargs):
    id = CAPTCHA_ID 
    obj = CaptchaField(id)
    self._setObject(id, obj)
    obj = self._getOb(id)
    obj.initializeArchetype(**kwargs)
    event.notify(objectevent.ObjectModifiedEvent(obj))
    return obj.getId()

class CaptchaField(FGStringField):

    _at_rename_after_creation = False
    schema = CaptchaFieldSchema

    def __init__(self, oid, **kwargs):
        """ initialize class """
        BaseFormField.__init__(self, oid, **kwargs)

        # set a preconfigured field as an instance attribute
        self.fgField = StringField('fg_string_field',
            searchable=0,
            required=1,
            write_permission = View,
            validators=('isCaptchaCorrect',),
            widget=CaptchaWidget(),
            )

registerATCT(CaptchaField, PROJECTNAME)