#
#  Copyright (c) 2008 Helmut Merz helmutm@cy55.de
#
#  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
#

"""
Definition of view classes and other browser related stuff for tasks.

$Id$
"""

from datetime import datetime
from zope import interface, component
from zope.app.pagetemplate import ViewPageTemplateFile
from zope.cachedescriptors.property import Lazy

from loops.browser.action import DialogAction
from loops.browser.concept import ConceptView
from loops.common import adapted
from loops.util import _


organize_macros = ViewPageTemplateFile('view_macros.pt')


class Events(ConceptView):

    @Lazy
    def macro(self):
        return organize_macros.macros['events']

    def getActions(self, category='object', page=None, target=None):
        actions = []
        if category == 'portlet':
            actions.append(DialogAction(self, title=_(u'Create Event...'),
                  description=_(u'Create a new event.'),
                  viewName='create_concept.html',
                  dialogName='createEvent',
                  typeToken='.loops/concepts/event',
                  fixedType=True,
                  innerForm='inner_concept_form.html',
                  page=page,
                  target=target))
            self.registerDojoDateWidget()
        return actions

    def events(self):
        cm = self.loopsRoot.getConceptManager()
        tEvent = cm['event']
        hasType = cm.getTypePredicate()
        now = datetime.today()
        sort = lambda x: x.adapted.start or now
        relViews = (self.childViewFactory(r, self.request, contextIsSecond=True)
                        for r in tEvent.getChildRelations([hasType], sort=None))
        return sorted((rv for rv in relViews
                          if not rv.adapted.end or rv.adapted.end >= now),
                      key=sort)