136 lines
4.5 KiB
Python
136 lines
4.5 KiB
Python
# -*- coding: utf-8 -*-
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from django.core.exceptions import ImproperlyConfigured
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from django.core.urlresolvers import reverse
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from django.db import models
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from django.utils.translation import ugettext_lazy, ugettext_noop
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from openslides.utils.utils import int_or_none
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class RelatedModelMixin(object):
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"""
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Mixin for motion related models, that appear on the motion slide.
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"""
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def save(self, *args, **kwargs):
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"""
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Saves the model and updates the projector, if the motion in on it.
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"""
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from .api import update_projector
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value = super(RelatedModelMixin, self).save(*args, **kwargs)
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if self.get_related_model().is_active_slide():
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update_projector()
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return value
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def delete(self, *args, **kwargs):
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"""
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Deletes the model and updates the projector, if the motion in on it.
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"""
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from .api import update_projector
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value = super(RelatedModelMixin, self).delete(*args, **kwargs)
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if self.get_related_model().is_active_slide():
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update_projector()
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return value
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def get_related_model(self):
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"""
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Return the pk of the related model.
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"""
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raise ImproperlyConfigured(
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'%s has to have a method "get_related_model_pk"' % type(self))
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class SlideMixin(object):
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"""
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A Mixin for a Django-Model, for making the model a slide.
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"""
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slide_callback_name = None
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"""
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Name of the callback to render the model as slide.
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"""
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def save(self, *args, **kwargs):
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"""
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Updates the projector, if the object is on the projector and changed.
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"""
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from openslides.projector.api import update_projector
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value = super(SlideMixin, self).save(*args, **kwargs)
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if self.is_active_slide():
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update_projector()
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return value
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def delete(self, *args, **kwargs):
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"""
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Updates the projector, if the object is on the projector and is deleted.
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"""
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from openslides.projector.api import update_projector
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value = super(SlideMixin, self).delete(*args, **kwargs)
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if self.is_active_slide():
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update_projector()
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return value
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def get_absolute_url(self, link='projector'):
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"""
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Return the url to activate the slide, if link == 'projector'.
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"""
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if link in ('projector', 'projector_preview'):
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url_name = {'projector': 'projector_activate_slide',
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'projector_preview': 'projector_preview'}[link]
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value = '%s?pk=%d' % (
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reverse(url_name,
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args=[self.slide_callback_name]),
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self.pk)
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else:
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value = super(SlideMixin, self).get_absolute_url(link)
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return value
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def is_active_slide(self):
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"""
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Return True, if the the slide is the active slide.
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"""
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from openslides.projector.api import get_active_slide
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active_slide = get_active_slide()
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slide_pk = int_or_none(active_slide.get('pk', None))
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return (active_slide['callback'] == self.slide_callback_name and
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self.pk == slide_pk)
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def get_slide_context(self, **context):
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"""
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Returns the context for the template which renders the slide.
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"""
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slide_name = self._meta.object_name.lower()
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context.update({'slide': self,
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slide_name: self})
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return context
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class ProjectorSlide(SlideMixin, models.Model):
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"""
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Model for Slides, only for the projector. Also called custom slides.
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"""
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# TODO: Rename it to CustomSlide
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slide_callback_name = 'projector_slide'
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title = models.CharField(max_length=256, verbose_name=ugettext_lazy("Title"))
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text = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Text"))
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weight = models.IntegerField(default=0, verbose_name=ugettext_lazy("Weight"))
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def get_absolute_url(self, link='update'):
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if link == 'edit' or link == 'update':
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return reverse('customslide_edit', args=[str(self.pk)])
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if link == 'delete':
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return reverse('customslide_delete', args=[str(self.pk)])
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return super(ProjectorSlide, self).get_absolute_url(link)
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def __unicode__(self):
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return self.title
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class Meta:
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permissions = (
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('can_manage_projector', ugettext_noop("Can manage the projector")),
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('can_see_projector', ugettext_noop("Can see the projector")),
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('can_see_dashboard', ugettext_noop("Can see the dashboard")),
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)
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