#
# SchoolTool - common information systems platform for school administration
# Copyright (c) 2005 Shuttleworth Foundation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
"""
SchoolTool skin containers

$Id$
"""
import urllib

from zope.browserpage.viewpagetemplatefile import ViewPageTemplateFile
from zope.component import queryMultiAdapter
from zope.security.checker import canAccess
from zope.traversing.browser.absoluteurl import absoluteURL

from schooltool.skin.flourish.page import Page
from schooltool.common import SchoolToolMessage as _


class ContainerDeleteView(Page):
    """A view for deleting items from container."""

    @property
    def container(self):
        return self.context

    def listIdsForDeletion(self):
        return [key for key in self.container
                if "delete.%s" % key in self.request]

    def _listItemsForDeletion(self):
        return [self.container[key] for key in self.listIdsForDeletion()]

    itemsToDelete = property(_listItemsForDeletion)

    def update(self):
        if 'CONFIRM' in self.request:
            for key in self.listIdsForDeletion():
                del self.container[key]
            self.request.response.redirect(self.nextURL())
        elif 'CANCEL' in self.request:
            self.request.response.redirect(self.nextURL())

    def nextURL(self):
        return absoluteURL(self.container, self.request)

