OpenSlides/openslides/agenda/projector.py
2016-10-01 01:49:27 +02:00

100 lines
3.6 KiB
Python

from ..core.config import config
from ..core.exceptions import ProjectorException
from ..utils.collection import CollectionElement
from ..utils.projector import ProjectorElement
from .models import Item
class ItemListSlide(ProjectorElement):
"""
Slide definitions for Item model.
This is only for item list slides.
Set 'id' to None to get a list slide of all root items. Set 'id' to an
integer to get a list slide of the children of the metioned item.
Additionally set 'tree' to True to get also children of children.
"""
name = 'agenda/item-list'
def check_data(self):
pk = self.config_entry.get('id')
if pk is not None:
# Children slide.
if not Item.objects.filter(pk=pk).exists():
raise ProjectorException('Item does not exist.')
def get_requirements(self, config_entry):
yield from Item.objects.all()
class ListOfSpeakersSlide(ProjectorElement):
"""
Slide definitions for Item model.
This is only for list of speakers slide. You have to set 'id'.
"""
name = 'agenda/list-of-speakers'
def check_data(self):
if not Item.objects.filter(pk=self.config_entry.get('id')).exists():
raise ProjectorException('Item does not exist.')
def get_requirements(self, config_entry):
pk = config_entry.get('id')
if pk is not None:
# List of speakers slide.
try:
item = Item.objects.get(pk=pk)
except Item.DoesNotExist:
# Item does not exist. Just do nothing.
pass
else:
yield item
for speaker in item.speakers.filter(end_time=None):
# Yield current speaker and next speakers
yield speaker.user
query = (item.speakers.exclude(end_time=None)
.order_by('-end_time')[:config['agenda_show_last_speakers']])
for speaker in query:
# Yield last speakers
yield speaker.user
def get_collection_elements_required_for_this(self, collection_element, config_entry):
output = super().get_collection_elements_required_for_this(collection_element, config_entry)
# Full update if item changes because then we may have new
# candidates and therefor need new users.
if collection_element == CollectionElement.from_values(Item.get_collection_string(), config_entry.get('id')):
output.extend(self.get_requirements_as_collection_elements(config_entry))
return output
class CurrentListOfSpeakersSlide(ProjectorElement):
"""
Slide for the current list of speakers.
Nothing special to check.
"""
name = 'agenda/current-list-of-speakers'
def get_requirements(self, config_entry):
pk = config['projector_currentListOfSpeakers_reference']
if pk is not None:
# List of speakers slide.
try:
item = Item.objects.get(pk=pk)
except Item.DoesNotExist:
# Item does not exist. Just do nothing.
pass
else:
yield item
for speaker in item.speakers.filter(end_time=None):
# Yield current speaker and next speakers
yield speaker.user
query = (item.speakers.exclude(end_time=None)
.order_by('-end_time')[:config['agenda_show_last_speakers']])
for speaker in query:
# Yield last speakers
yield speaker.user