def render_readouts(request, readouts, template, locale=None, extra_data=None):
    """Render a readouts, possibly with overview page.

    Use the given template, pass the template the given readouts, limit the
    considered data to the given locale, and pass along anything in the
    `extra_data` dict to the template in addition to the standard data.

    """
    current_locale = locale or request.locale
    data = {'readouts': SortedDict((slug, class_(request, locale=locale))
                         for slug, class_ in readouts.iteritems()),
            'default_locale': settings.WIKI_DEFAULT_LANGUAGE,
            'default_locale_name':
                LOCALES[settings.WIKI_DEFAULT_LANGUAGE].native,
            'current_locale': current_locale,
            'current_locale_name': LOCALES[current_locale].native,
            'is_watching_approved': ApproveRevisionInLocaleEvent.is_notifying(
                request.user, locale=request.locale),
            'is_watching_locale': ReviewableRevisionInLocaleEvent.is_notifying(
                request.user, locale=request.locale),
            'is_watching_approved_default':
                ApproveRevisionInLocaleEvent.is_notifying(
                    request.user, locale=settings.WIKI_DEFAULT_LANGUAGE)}
    if extra_data:
        data.update(extra_data)
    return jingo.render(request, 'dashboards/' + template, data)

def render_readouts(request, readouts, template, locale=None, extra_data=None,
                    product=None):
    """Render a readouts, possibly with overview page.

    Use the given template, pass the template the given readouts, limit the
    considered data to the given locale, and pass along anything in the
    `extra_data` dict to the template in addition to the standard data.

    """
    current_locale = locale or request.LANGUAGE_CODE
    on_default_locale = request.LANGUAGE_CODE == settings.WIKI_DEFAULT_LANGUAGE
    data = {'readouts': SortedDict((slug, class_(request, locale=locale,
                                                 product=product))
                                   for slug, class_ in readouts.iteritems()
                                   if class_.should_show_to(request.user)),
            'default_locale': settings.WIKI_DEFAULT_LANGUAGE,
            'default_locale_name':
                LOCALES[settings.WIKI_DEFAULT_LANGUAGE].native,
            'current_locale': current_locale,
            'current_locale_name': LOCALES[current_locale].native,
            'request_locale_name': LOCALES[request.LANGUAGE_CODE].native,
            'is_watching_default_approved':
                ApproveRevisionInLocaleEvent.is_notifying(
                    request.user, locale=settings.WIKI_DEFAULT_LANGUAGE),
            'is_watching_other_approved':
                None if on_default_locale
                else ApproveRevisionInLocaleEvent.is_notifying(
                    request.user, locale=request.LANGUAGE_CODE),
            'is_watching_default_locale':
                ReviewableRevisionInLocaleEvent.is_notifying(
                    request.user, locale=settings.WIKI_DEFAULT_LANGUAGE),
            'is_watching_other_locale':
                None if on_default_locale
                else ReviewableRevisionInLocaleEvent.is_notifying(
                    request.user, locale=request.LANGUAGE_CODE),
            'is_watching_default_ready':
                ReadyRevisionEvent.is_notifying(request.user),
            'on_default_locale': on_default_locale,
            'announce_form': AnnouncementForm(),
            'announcements': Announcement.get_for_locale_name(current_locale),
            'product': product,
            'products': Product.objects.filter(visible=True),
        }
    if extra_data:
        data.update(extra_data)
    return jingo.render(request, 'dashboards/' + template, data)

def _kb_main(request, readouts, template, locale=None, extra_data=None):
    """Render a KB statistics overview page.

    Use the given template, pass the template the given readouts, limit the
    considered data to the given locale, and pass along anything in the
    `extra_data` dict to the template in addition to the standard data.

    """
    data = {
        "readouts": SortedDict((slug, class_(request, locale=locale)) for slug, class_ in readouts.iteritems()),
        "default_locale": settings.WIKI_DEFAULT_LANGUAGE,
        "default_locale_name": LOCALES[settings.WIKI_DEFAULT_LANGUAGE].native,
        "current_locale_name": LOCALES[request.locale].native,
        "is_watching_approved": ApproveRevisionInLocaleEvent.is_notifying(request.user, locale=request.locale),
        "is_watching_locale": ReviewableRevisionInLocaleEvent.is_notifying(request.user, locale=request.locale),
        "is_watching_approved_default": ApproveRevisionInLocaleEvent.is_notifying(
            request.user, locale=settings.WIKI_DEFAULT_LANGUAGE
        ),
    }
    if extra_data:
        data.update(extra_data)
    return render(request, "dashboards/" + template, data)

def unwatch_locale(request):
    """Stop watching a locale for revisions ready for review."""
    ReviewableRevisionInLocaleEvent.stop_notifying(request.user,
                                                   locale=request.locale)
    return HttpResponse()

def watch_locale(request):
    """Start watching a locale for revisions ready for review."""
    ReviewableRevisionInLocaleEvent.notify(request.user, locale=request.locale)
    statsd.incr('wiki.watches.locale')
    # A 200 so jQuery interprets it as success
    return HttpResponse()

def unwatch_locale(request):
    """Stop watching a locale for revisions ready for review."""
    ReviewableRevisionInLocaleEvent.stop_notifying(request.user,
                                                   locale=request.locale)
    return HttpResponseRedirect(_get_next_url_fallback_localization(request))

def watch_locale(request):
    """Start watching a locale for revisions ready for review."""
    ReviewableRevisionInLocaleEvent.notify(request.user, locale=request.locale)
    # This redirect is pretty bad, because you might also have been on the
    # Contributor Dashboard:
    return HttpResponseRedirect(_get_next_url_fallback_localization(request))

def unwatch_locale(request):
    """Stop watching a locale for revisions ready for review."""
    ReviewableRevisionInLocaleEvent.stop_notifying(request.user,
                                                   locale=request.locale)
    return HttpResponseRedirect(reverse('dashboards.localization'))