# -*- coding: utf-8 -*-
from Products.CMFCore.utils import getToolByName
from zope.i18nmessageid import MessageFactory
from zope.interface import implementer
from zope.schema.interfaces import IVocabularyFactory
from zope.schema.vocabulary import SimpleTerm
from zope.schema.vocabulary import SimpleVocabulary
from zope.site.hooks import getSite

_ = MessageFactory('plone')


@implementer(IVocabularyFactory)
class AvailableEditorsVocabulary(object):
    """Vocabulary factory for available editors in the portal.

      >>> from zope.component import queryUtility
      >>> from plone.app.vocabularies.tests.base import create_context
      >>> from plone.app.vocabularies.tests.base import DummyContext
      >>> from plone.app.vocabularies.tests.base import DummyTool

      >>> name = 'plone.app.vocabularies.AvailableEditors'
      >>> util = queryUtility(IVocabularyFactory, name)
      >>> context = create_context()

      >>> tool = DummyTool('portal_properties')
      >>> site_properties = DummyContext()
      >>> available_editors = ['Kupu', 'TinyMCE']
      >>> site_properties.available_editors = available_editors
      >>> tool.site_properties = site_properties
      >>> context.portal_properties = tool

      >>> editors = util(context)
      >>> editors
      <zope.schema.vocabulary.SimpleVocabulary object at ...>

      >>> len(editors.by_token)
      2

      >>> TinyMCE = editors.by_token['TinyMCE']
      >>> TinyMCE.title, TinyMCE.token, TinyMCE.value
      (u'TinyMCE', 'TinyMCE', 'TinyMCE')
    """

    def __call__(self, context):
        items = []
        site = getSite()
        pprop = getToolByName(site, 'portal_properties', None)
        if pprop is not None:
            editors = pprop.site_properties.available_editors
            items = [SimpleTerm(e, e, _(e)) for e in editors]
        return SimpleVocabulary(items)

AvailableEditorsVocabularyFactory = AvailableEditorsVocabulary()