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