98 lines
3.5 KiB
Python
98 lines
3.5 KiB
Python
from persistent import Persistent
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from z3c.form import validator
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from z3c.form.field import Fields
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from zope import interface, schema
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from zope.annotation import factory
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from zope.component import adapts, provideAdapter, queryUtility
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from zope.publisher.interfaces.browser import IDefaultBrowserLayer
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from zope.interface import Interface, implements
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from plone.registry.interfaces import IRegistry
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from plone.z3cform.fieldsets import extensible
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from plone.z3cform.fieldsets.interfaces import IFormExtender
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from plone.app.discussion.browser.comments import CommentForm
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from plone.app.discussion.comment import Comment
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from plone.app.discussion.interfaces import IDiscussionSettings, ICaptcha
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HAS_CAPTCHA = False
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try:
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from plone.formwidget.captcha import CaptchaFieldWidget
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from plone.formwidget.captcha.validator import CaptchaValidator
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HAS_CAPTCHA = True
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except ImportError:
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# Fall back to SimpleFieldValidator, when Captcha is not installed,
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# since otherwise the registration of the Captcha validator adapter
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# would fail.
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from z3c.form.validator import SimpleFieldValidator as CaptchaValidator
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HAS_RECAPTCHA = False
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try:
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from plone.formwidget.recaptcha import ReCaptchaFieldWidget
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HAS_RECAPTCHA = True
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except ImportError:
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# Fall back to SimpleFieldValidator, when ReCaptcha is not installed,
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# since otherwise the registration of the ReCaptcha validator adapter
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# would fail.
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from z3c.form.validator import SimpleFieldValidator as CaptchaValidator
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class Captcha(Persistent):
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interface.implements(ICaptcha)
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adapts(Comment)
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captcha = u""
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Captcha = factory(Captcha)
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if HAS_CAPTCHA or HAS_RECAPTCHA:
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# Extend the comment form with captcha, only if a captcha solution is installed.
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class CaptchaExtender(extensible.FormExtender):
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adapts(Interface, IDefaultBrowserLayer, CommentForm) # context, request, form
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fields = Fields(ICaptcha)
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def __init__(self, context, request, form):
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self.context = context
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self.request = request
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self.form = form
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registry = queryUtility(IRegistry)
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settings = registry.forInterface(IDiscussionSettings)
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self.captcha = settings.captcha
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def update(self):
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if self.captcha != 'disabled':
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# Add captcha field if captcha is enabled in the registry
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self.add(ICaptcha, prefix="")
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if HAS_CAPTCHA and self.captcha == 'captcha':
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# If Captcha is installed and Captcha is enabled,
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# use the CaptchaFieldWidget
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self.form.fields['captcha'].widgetFactory = CaptchaFieldWidget
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elif HAS_RECAPTCHA and self.captcha == 'recaptcha':
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# If ReCaptcha is installed and ReCaptcha is enabled,
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# use the ReCaptchaFieldWidget
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self.form.fields['captcha'].widgetFactory = ReCaptchaFieldWidget
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else:
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#
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pass
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# Register Captcha validator for the captcha field in the ICaptchaForm
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validator.WidgetValidatorDiscriminators(CaptchaValidator, field=ICaptcha['captcha'])
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else:
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# This is necessary, otherwise the zcml registration of the CaptchaExtender
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# would fail if no captcha solution is installed.
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class CaptchaExtender(extensible.FormExtender):
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adapts(Interface, IDefaultBrowserLayer, CommentForm)
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def __init__(self, context, request, form):
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pass
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def update(self):
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pass |