# -*- coding: utf-8 -*- from datetime import datetime from django.contrib.auth.models import AnonymousUser from django.contrib.contenttypes import generic from django.contrib.contenttypes.models import ContentType from django.core.urlresolvers import reverse from django.db import models from django.utils.translation import ugettext as _ from django.utils.translation import ugettext_lazy, ugettext_noop from mptt.models import MPTTModel, TreeForeignKey from openslides.config.api import config from openslides.projector.api import (get_active_slide, reset_countdown, start_countdown, stop_countdown, update_projector, update_projector_overlay) from openslides.projector.models import SlideMixin from openslides.utils.exceptions import OpenSlidesError from openslides.utils.models import AbsoluteUrlMixin from openslides.utils.person.models import PersonField class Item(SlideMixin, AbsoluteUrlMixin, MPTTModel): """ An Agenda Item MPTT-model. See http://django-mptt.github.com/django-mptt/ """ slide_callback_name = 'agenda' AGENDA_ITEM = 1 ORGANIZATIONAL_ITEM = 2 ITEM_TYPE = ( (AGENDA_ITEM, ugettext_lazy('Agenda item')), (ORGANIZATIONAL_ITEM, ugettext_lazy('Organizational item'))) title = models.CharField(null=True, max_length=255, verbose_name=ugettext_lazy("Title")) """ Title of the agenda item. """ text = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Text")) """ The optional text of the agenda item. """ comment = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Comment")) """ Optional comment to the agenda item. Will not be shoun to normal users. """ closed = models.BooleanField(default=False, verbose_name=ugettext_lazy("Closed")) """ Flag, if the item is finished. """ type = models.IntegerField(max_length=1, choices=ITEM_TYPE, default=AGENDA_ITEM, verbose_name=ugettext_lazy("Type")) """ Type of the agenda item. See Item.ITEM_TYPE for more information. """ duration = models.CharField(null=True, blank=True, max_length=5) """ The intended duration for the topic. """ parent = TreeForeignKey('self', null=True, blank=True, related_name='children') """ The parent item in the agenda tree. """ weight = models.IntegerField(default=0, verbose_name=ugettext_lazy("Weight")) """ Weight to sort the item in the agenda. """ content_type = models.ForeignKey(ContentType, null=True, blank=True) """ Field for generic relation to a related object. Type of the object. """ object_id = models.PositiveIntegerField(null=True, blank=True) """ Field for generic relation to a related object. Id of the object. """ # TODO: rename it to object_pk content_object = generic.GenericForeignKey() """ Field for generic relation to a related object. General field to the related object. """ speaker_list_closed = models.BooleanField( default=False, verbose_name=ugettext_lazy("List of speakers is closed")) """ True, if the list of speakers is closed. """ class Meta: permissions = ( ('can_see_agenda', ugettext_noop("Can see agenda")), ('can_manage_agenda', ugettext_noop("Can manage agenda")), ('can_see_orga_items', ugettext_noop("Can see orga items and time scheduling of agenda"))) class MPTTMeta: order_insertion_by = ['weight'] def save(self, *args, **kwargs): super(Item, self).save(*args, **kwargs) if self.parent and self.parent.is_active_slide(): update_projector() def __unicode__(self): return self.get_title() def get_absolute_url(self, link='detail'): """ Return the URL to this item. The link can be detail, update or delete. """ if link == 'detail': url = reverse('item_view', args=[str(self.id)]) elif link == 'update': url = reverse('item_edit', args=[str(self.id)]) elif link == 'delete': url = reverse('item_delete', args=[str(self.id)]) elif link == 'projector_list_of_speakers': url = '%s&type=list_of_speakers' % super(Item, self).get_absolute_url('projector') elif link == 'projector_summary': url = '%s&type=summary' % super(Item, self).get_absolute_url('projector') elif (link in ('projector', 'projector_preview') and self.content_object and isinstance(self.content_object, SlideMixin)): url = self.content_object.get_absolute_url(link) else: url = super(Item, self).get_absolute_url(link) return url def get_title(self): """ Return the title of this item. """ if not self.content_object: return self.title try: return self.content_object.get_agenda_title() except AttributeError: raise NotImplementedError('You have to provide a get_agenda_title method on your related model.') def get_title_supplement(self): """ Return a supplement for the title. """ if not self.content_object: return '' try: return self.content_object.get_agenda_title_supplement() except AttributeError: raise NotImplementedError('You have to provide a get_agenda_title_supplement method on your related model.') def set_closed(self, closed=True): """ Changes the closed-status of the item. """ self.closed = closed self.save() @property def weight_form(self): """ Return the WeightForm for this item. """ from openslides.agenda.forms import ItemOrderForm try: parent = self.parent.id except AttributeError: parent = 0 initial = { 'weight': self.weight, 'self': self.id, 'parent': parent, } return ItemOrderForm(initial=initial, prefix="i%d" % self.id) def delete(self, with_children=False): """ Delete the Item. """ if not with_children: for child in self.get_children(): child.move_to(self.parent) child.save() super(Item, self).delete() Item.objects.rebuild() def get_list_of_speakers(self, old_speakers_count=None, coming_speakers_count=None): """ Returns the list of speakers as a list of dictionaries. Each dictionary contains a prefix, the speaker and its type. Types are old_speaker, actual_speaker and coming_speaker. """ speaker_query = Speaker.objects.filter(item=self) # TODO: Why not self.speaker_set? list_of_speakers = [] # Parse old speakers old_speakers = speaker_query.exclude(begin_time=None).exclude(end_time=None).order_by('end_time') if old_speakers_count is None: old_speakers_count = old_speakers.count() last_old_speakers_count = max(0, old_speakers.count() - old_speakers_count) old_speakers = old_speakers[last_old_speakers_count:] for number, speaker in enumerate(old_speakers): prefix = old_speakers_count - number speaker_dict = { 'prefix': '-%d' % prefix, 'speaker': speaker, 'type': 'old_speaker', 'first_in_group': False, 'last_in_group': False} if number == 0: speaker_dict['first_in_group'] = True if number == old_speakers_count - 1: speaker_dict['last_in_group'] = True list_of_speakers.append(speaker_dict) # Parse actual speaker try: actual_speaker = speaker_query.filter(end_time=None).exclude(begin_time=None).get() except Speaker.DoesNotExist: pass else: list_of_speakers.append({ 'prefix': '0', 'speaker': actual_speaker, 'type': 'actual_speaker', 'first_in_group': True, 'last_in_group': True}) # Parse coming speakers coming_speakers = speaker_query.filter(begin_time=None).order_by('weight') if coming_speakers_count is None: coming_speakers_count = coming_speakers.count() coming_speakers = coming_speakers[:max(0, coming_speakers_count)] for number, speaker in enumerate(coming_speakers): speaker_dict = { 'prefix': number + 1, 'speaker': speaker, 'type': 'coming_speaker', 'first_in_group': False, 'last_in_group': False} if number == 0: speaker_dict['first_in_group'] = True if number == coming_speakers_count - 1: speaker_dict['last_in_group'] = True list_of_speakers.append(speaker_dict) return list_of_speakers def get_next_speaker(self): """ Returns the speaker object of the person who is next. """ try: return self.speaker_set.filter(begin_time=None).order_by('weight')[0] except IndexError: # The list of speakers is empty. return None def is_active_slide(self): """ Returns True if the slide is True. If the slide is a related item, Returns True if the related object is active. """ if self.content_object and isinstance(self.content_object, SlideMixin): value = self.content_object.is_active_slide() else: value = super(Item, self).is_active_slide() return value class SpeakerManager(models.Manager): def add(self, person, item): if self.filter(person=person, item=item, begin_time=None).exists(): raise OpenSlidesError(_( '%(person)s is already on the list of speakers of item %(id)s.') % {'person': person, 'id': item.id}) if isinstance(person, AnonymousUser): raise OpenSlidesError( _('An anonymous user can not be on lists of speakers.')) weight = (self.filter(item=item).aggregate( models.Max('weight'))['weight__max'] or 0) return self.create(item=item, person=person, weight=weight + 1) class Speaker(AbsoluteUrlMixin, models.Model): """ Model for the Speaker list. """ objects = SpeakerManager() person = PersonField() """ ForeinKey to the person who speaks. """ item = models.ForeignKey(Item) """ ForeinKey to the AgendaItem to which the person want to speak. """ begin_time = models.DateTimeField(null=True) """ Saves the time, when the speaker begins to speak. None, if he has not spoken yet. """ end_time = models.DateTimeField(null=True) """ Saves the time, when the speaker ends his speach. None, if he is not finished yet. """ weight = models.IntegerField(null=True) """ The sort order of the list of speakers. None, if he has already spoken. """ class Meta: permissions = ( ('can_be_speaker', ugettext_noop('Can put oneself on the list of speakers')), ) def save(self, *args, **kwargs): super(Speaker, self).save(*args, **kwargs) self.check_and_update_projector() def delete(self, *args, **kwargs): super(Speaker, self).delete(*args, **kwargs) self.check_and_update_projector() def __unicode__(self): return unicode(self.person) def get_absolute_url(self, link='detail'): if link == 'detail': url = self.person.get_absolute_url('detail') elif link == 'delete': url = reverse('agenda_speaker_delete', args=[self.item.pk, self.pk]) else: url = super(Speaker, self).get_absolute_url(link) return url def check_and_update_projector(self): """ Checks, if the agenda item, or parts of it, is on the projector. If yes, it updates the projector. """ if self.item.is_active_slide(): if get_active_slide().get('type', None) == 'list_of_speakers': update_projector() else: update_projector_overlay('agenda_speaker') def begin_speach(self): """ Let the person speak. Set the weight to None and the time to now. If anyone is still speaking, end his speach. """ try: actual_speaker = Speaker.objects.filter(item=self.item, end_time=None).exclude(begin_time=None).get() except Speaker.DoesNotExist: pass else: actual_speaker.end_speach() self.weight = None self.begin_time = datetime.now() self.save() # start countdown if config['agenda_couple_countdown_and_speakers']: reset_countdown() start_countdown() if self.item.is_active_slide(): # TODO: only update the overlay if the overlay is active and # slide type is None. update_projector_overlay('projector_countdown') def end_speach(self): """ The speach is finished. Set the time to now. """ self.end_time = datetime.now() self.save() # stop countdown if config['agenda_couple_countdown_and_speakers']: stop_countdown() if self.item.is_active_slide(): # TODO: only update the overlay if the overlay is active and # slide type is None. update_projector_overlay('projector_countdown')