~launchpad-pqm/launchpad/devel

# Copyright 2009-2012 Canonical Ltd.  This software is licensed under the

# GNU Affero General Public License version 3 (see the file LICENSE).

"""Browser view class for drivers."""

__metaclass__ = type

__all__ = ["AppointDriverView"]

from zope.interface import providedBy

from zope.security.proxy import removeSecurityProxy

from lp.app.browser.launchpadform import (

    action,

    LaunchpadEditFormView,

    )

from lp.registry.interfaces.productseries import IProductSeries

from lp.registry.interfaces.role import IHasAppointedDriver

from lp.services.webapp.publisher import canonical_url

class AppointDriverView(LaunchpadEditFormView):

    """Browser view for appointing a driver to an object."""

    field_names = ['driver']

    @property

    def schema(self):

        """Return the schema that is the most specific extension of

        IHasAppointedDriver

        """

        assert IHasAppointedDriver.providedBy(self.context), (

            "context should provide IHasAppointedDriver.")

        for interface in providedBy(self.context):

            if interface.isOrExtends(IHasAppointedDriver):

                # XXX matsubara 2007-02-13 bug=84940:

                # removeSecurityProxy() is a workaround.

                return removeSecurityProxy(interface)

    @property

    def label(self):

        """The page heading."""

        return "Appoint %s" % self.driver_title

    @property

    def driver_title(self):

        """The title of the driver."""

        if IProductSeries.providedBy(self.context):

            return "release manager"

        else:

            return 'driver'

    @property

    def page_title(self):

        return 'Appoint the %s for %s' % (

            self.driver_title, self.context.title)

    @action('Change', name='change')

    def change_action(self, action, data):

        """Change the driver."""

        driver = data['driver']

        self.updateContextFromData(data)

        if driver:

            self.request.response.addNotification(

                "Successfully changed the %s to %s" % (

                    self.driver_title, driver.displayname))

        else:

            self.request.response.addNotification(

                "Successfully removed the %s" % self.driver_title)

    @property

    def next_url(self):

        """See `LaunchpadFormView`."""

        return canonical_url(self.context)

    @property

    def cancel_url(self):

        """See `LaunchpadFormView`."""

        return canonical_url(self.context)