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# Copyright 2009 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Views for SpecificationSubscription."""
__metaclass__ = type
__all__ = [
'SpecificationSubscriptionAddView',
'SpecificationSubscriptionEditView',
]
from simplejson import dumps
from zope.component import getUtility
from lazr.delegates import delegates
from canonical.launchpad import _
from canonical.launchpad.webapp import (
canonical_url,
)
from canonical.launchpad.webapp.authorization import check_permission
from canonical.launchpad.webapp.interfaces import ILaunchBag
from canonical.launchpad.webapp.publisher import LaunchpadView
from lp.app.browser.launchpadform import (
action,
LaunchpadEditFormView,
LaunchpadFormView,
)
from lp.blueprints.interfaces.specificationsubscription import (
ISpecificationSubscription,
)
from lp.registry.model.person import person_sort_key
from lp.services.propertycache import cachedproperty
class SpecificationSubscriptionAddView(LaunchpadFormView):
schema = ISpecificationSubscription
field_names = ['person', 'essential']
label = 'Subscribe someone else'
for_input = True
@action(_('Continue'), name='continue')
def continue_action(self, action, data):
self.context.subscribe(data['person'], self.user, data['essential'])
self.next_url = canonical_url(self.context)
@property
def cancel_url(self):
return canonical_url(self.context)
class SpecificationSubscriptionEditView(LaunchpadEditFormView):
schema = ISpecificationSubscription
field_names = ['essential']
label = 'Edit subscription'
@action(_('Change'), name='change')
def change_action(self, action, data):
self.updateContextFromData(data)
self.next_url = canonical_url(self.context.specification)
@property
def cancel_url(self):
return canonical_url(self.context.specification)
class SpecificationPortletSubcribersContents(LaunchpadView):
"""View for the contents for the subscribers portlet."""
@property
def subscription(self):
"""Return a decorated subscription with added attributes."""
return SubscriptionAttrDecorator(self.context)
@property
def sorted_subscriptions(self):
"""Get the list of subscriptions to the specification.
The list is sorted such that subscriptions you can unsubscribe appear
before all other subscriptions.
"""
sort_key = lambda sub: person_sort_key(sub.person)
subscriptions = sorted(self.context.subscriptions, key=sort_key)
can_unsubscribe = []
cannot_unsubscribe = []
for subscription in subscriptions:
if not check_permission('launchpad.View', subscription.person):
continue
if subscription.person == self.user:
can_unsubscribe = [subscription] + can_unsubscribe
elif subscription.canBeUnsubscribedByUser(self.user):
can_unsubscribe.append(subscription)
else:
cannot_unsubscribe.append(subscription)
sorted_subscriptions = can_unsubscribe + cannot_unsubscribe
return sorted_subscriptions
@property
def current_user_subscription_class(self):
is_subscribed = self.context.isSubscribed(self.user)
if is_subscribed:
return 'subscribed-true'
else:
return 'subscribed-false'
class SpecificationPortletSubcribersIds(LaunchpadView):
"""A view returning a JSON dump of the subscriber IDs for a blueprint."""
@cachedproperty
def subscriber_ids(self):
"""Return a dictionary mapping a css_name to user name."""
subscribers = set(self.context.subscribers)
# The current user has to be in subscribers_id so
# in case the id is needed for a new subscription.
user = getUtility(ILaunchBag).user
if user is not None:
subscribers.add(user)
ids = {}
for sub in subscribers:
ids[sub.name] = 'subscriber-%s' % sub.id
return ids
@property
def subscriber_ids_js(self):
"""Return subscriber_ids in a form suitable for JavaScript use."""
return dumps(self.subscriber_ids)
def render(self):
"""Override the default render() to return only JSON."""
self.request.response.setHeader('content-type', 'application/json')
return self.subscriber_ids_js
class SubscriptionAttrDecorator:
"""A SpecificationSubscription with added attributes for HTML/JS."""
delegates(ISpecificationSubscription, 'subscription')
def __init__(self, subscription):
self.subscription = subscription
@property
def css_name(self):
return 'subscriber-%s' % self.subscription.person.id
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