OpenSlides/openslides/agenda/signals.py
Oskar Hahn 32137b6523 Use python3
python3.3 and python3.4 are supported
2014-08-24 21:21:11 +02:00

155 lines
5.9 KiB
Python

from datetime import datetime
from django import forms
from django.contrib.contenttypes.models import ContentType
from django.core.exceptions import ValidationError
from django.db.models.signals import pre_delete
from django.dispatch import receiver
from django.template.loader import render_to_string
from django.utils.translation import ugettext as _
from django.utils.translation import ugettext_lazy, ugettext_noop
from openslides.config.api import config, ConfigCollection, ConfigVariable
from openslides.config.signals import config_signal
from openslides.projector.api import get_active_slide, get_active_object
from openslides.projector.projector import Overlay
from openslides.projector.signals import projector_overlays
from .models import Item
def validate_start_time(value):
try:
datetime.strptime(value, '%d.%m.%Y %H:%M')
except ValueError:
raise ValidationError(_('Invalid input.'))
# TODO: Reinsert the datepicker scripts in the template
@receiver(config_signal, dispatch_uid='setup_agenda_config')
def setup_agenda_config(sender, **kwargs):
"""
Agenda config variables.
"""
# TODO: Insert validator for the format or use other field carefully.
agenda_start_event_date_time = ConfigVariable(
name='agenda_start_event_date_time',
default_value='',
form_field=forms.CharField(
validators=[validate_start_time, ],
widget=forms.DateTimeInput(format='%d.%m.%Y %H:%M'),
required=False,
label=ugettext_lazy('Begin of event'),
help_text=ugettext_lazy('Input format: DD.MM.YYYY HH:MM')))
agenda_show_last_speakers = ConfigVariable(
name='agenda_show_last_speakers',
default_value=1,
form_field=forms.IntegerField(
min_value=0,
label=ugettext_lazy('Number of last speakers to be shown on the projector')))
agenda_couple_countdown_and_speakers = ConfigVariable(
name='agenda_couple_countdown_and_speakers',
default_value=False,
form_field=forms.BooleanField(
label=ugettext_lazy('Couple countdown with the list of speakers'),
help_text=ugettext_lazy('[Begin speach] starts the countdown, [End speach] stops the countdown.'),
required=False))
agenda_number_prefix = ConfigVariable(
name='agenda_number_prefix',
default_value='',
form_field=forms.CharField(
label=ugettext_lazy('Numbering prefix for agenda items'),
max_length=20,
required=False))
agenda_numeral_system = ConfigVariable(
name='agenda_numeral_system',
default_value='arabic',
form_field=forms.ChoiceField(
label=ugettext_lazy('Numeral system for agenda items'),
widget=forms.Select(),
choices=(
('arabic', ugettext_lazy('Arabic')),
('roman', ugettext_lazy('Roman'))),
required=False))
extra_stylefiles = ['css/jquery-ui-timepicker.css']
extra_javascript = ['js/jquery/jquery-ui-timepicker-addon.min.js',
'js/jquery/jquery-ui-sliderAccess.min.js',
'js/jquery/datepicker-config.js']
return ConfigCollection(title=ugettext_noop('Agenda'),
url='agenda',
weight=20,
variables=(agenda_start_event_date_time,
agenda_show_last_speakers,
agenda_couple_countdown_and_speakers,
agenda_number_prefix,
agenda_numeral_system),
extra_context={'extra_stylefiles': extra_stylefiles,
'extra_javascript': extra_javascript})
@receiver(projector_overlays, dispatch_uid="agenda_list_of_speakers")
def agenda_list_of_speakers(sender, **kwargs):
"""
Receiver for the list of speaker overlay.
"""
name = 'agenda_speaker'
def get_widget_html():
"""
Returns the the html-code to show in the overly-widget.
"""
return render_to_string('agenda/overlay_speaker_widget.html')
def get_projector_html():
"""
Returns an html-code to show on the projector.
The overlay is only shown on agenda-items and not on the
list-of-speakers slide.
"""
slide = get_active_object()
if slide is None or isinstance(slide, Item):
item = slide
else:
# TODO: If there is more than one item, use the first one in the
# mptt tree that is not closed.
try:
item = Item.objects.filter(
content_type=ContentType.objects.get_for_model(slide),
object_id=slide.pk)[0]
except IndexError:
item = None
if item and get_active_slide().get('type', None) != 'list_of_speakers':
list_of_speakers = item.get_list_of_speakers(
old_speakers_count=config['agenda_show_last_speakers'],
coming_speakers_count=5)
value = render_to_string('agenda/overlay_speaker_projector.html', {
'list_of_speakers': list_of_speakers,
'closed': item.speaker_list_closed})
else:
value = None
return value
return Overlay(name, get_widget_html, get_projector_html)
@receiver(pre_delete)
def listen_to_related_object_delete_signal(sender, instance, **kwargs):
"""
Receiver to listen whether a related item has been deleted.
"""
if hasattr(instance, 'get_agenda_title'):
for item in Item.objects.filter(content_type=ContentType.objects.get_for_model(sender), object_id=instance.pk):
item.title = '< Item for deleted slide (%s) >' % instance.get_agenda_title()
item.content_type = None
item.object_id = None
item.save()