from zope.interface import Interface
from plone.theme.interfaces import IDefaultPloneLayer


class IPloneSEOLayer(IDefaultPloneLayer):
    """Marker interface that defines a Zope 3 skin layer bound to a Skin
       Selection in portal_skins.
    """


class IValidateSEOKeywordsView(Interface):
    """ View for validating keywords on qSEO_properties_edit_form """

    def validateKeywords():
        """ 1. Get *text* parameter from request
            2. Parse *text* and validate each extracted keyword
               for appearing on the context page """