~azzar1/unity/add-show-desktop-key

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# IVLE
# Copyright (C) 2007-2008 The University of Melbourne
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

# App: groups
# Author: Matt Giuca
# Date: 21/7/2008

# Allows students and tutors to manage project groups.

# XXX Does not distinguish between current and past subjects.

import cgi

from ivle import caps
from ivle.database import Subject
from ivle import util

from ivle.webapp.base.plugins import BasePlugin
from ivle.webapp.base.xhtml import XHTMLView

class GroupsView(XHTMLView):
    """
    The groups view
    """
    template = 'template.html'
    appname = 'groups' # XXX

    def populate(self, req, ctx):
        # Set request attributes
        req.styles = ["media/groups/groups.css"]
        req.scripts = [
            "media/groups/groups.js",
            "media/common/util.js",
            "media/common/json2.js",
        ]

        ctx['enrolments'] = []
        # Show a group panel per enrolment
        enrolments = req.user.active_enrolments
        if enrolments.count() == 0:
            ctx['no_enrolments'] = True
        else:
            ctx['no_enrolments'] = False

        for enrolment in enrolments:
            self.add_subject_panel(req, enrolment.offering, ctx)

        if req.user.hasCap(caps.CAP_MANAGEGROUPS):
            ctx['manage_groups'] = True
            ctx['manage_subjects'] = []
            subjects = req.store.find(Subject)
            for s in subjects:
                new_s = {}
                new_s['id'] = s.id
                new_s['name'] = s.name
                new_s['code'] = s.code
                ctx['manage_subjects'].append(new_s)
        else:
            ctx['manage_groups'] = False


    def add_subject_panel(self, req, offering, ctx):
        """
        Show the group management panel for a particular subject.
        Prints to req.
        """
        # Get the groups this user is in, for this offering
        groups = req.user.get_groups(offering)
        if groups.count() == 0:
            return

        offering_groups = {}

        offering_groups['offering_id'] = offering.id
        offering_groups['offering_name'] = offering.subject.name
        offering_groups['groups'] = []

        #TODO: Use a better way to manage group membership and invitations
        for group in groups:
            new_group = {}
            new_group['nick'] = cgi.escape(group.nick if group.nick else '')
            new_group['name'] = cgi.escape(group.name)

            # XXX - This should be set to reflect whether or not a user is invited
            #     - or if they have accepted the offer
            new_group['is_member'] = True
            new_group['members'] = []

            for user in group.members:
                member = {}
                member['fullname'] = cgi.escape(user.fullname)
                member['login'] = cgi.escape(user.login)
                new_group['members'].append(member)
            offering_groups['groups'].append(new_group)

        ctx['enrolments'].append(offering_groups)


class Plugin(BasePlugin):
    """
    The Plugin class for the user plugin.
    """
    # Magic attribute: urls
    # Sequence of pairs/triples of
    # (regex str, handler class, kwargs dict)
    # The kwargs dict is passed to the __init__ of the view object
    urls = [
        ('groups/', GroupsView),
    ]