2012-04-25 22:29:19 +02:00
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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openslides.projector.models
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2012-07-07 14:01:40 +02:00
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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2012-04-25 22:29:19 +02:00
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Models for the projector app.
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2013-03-01 17:13:12 +01:00
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:copyright: 2011–2013 by OpenSlides team, see AUTHORS.
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2012-04-25 22:29:19 +02:00
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:license: GNU GPL, see LICENSE for more details.
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"""
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2012-04-18 18:55:33 +02:00
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2012-02-03 20:49:16 +01:00
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from django.db import models
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2012-04-16 16:35:30 +02:00
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from django.dispatch import receiver
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2013-04-22 19:59:05 +02:00
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from django.utils.translation import ugettext_lazy, ugettext_noop
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2013-08-04 12:59:11 +02:00
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from django.core.exceptions import ImproperlyConfigured
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from django.core.urlresolvers import reverse
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2012-04-16 16:35:30 +02:00
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2013-08-04 12:59:11 +02:00
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from openslides.utils.utils import int_or_none
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2012-07-07 14:01:40 +02:00
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2012-04-14 12:52:56 +02:00
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2013-08-04 12:59:11 +02:00
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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 'self' is the active slide.
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"""
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from openslides.projector.api import update_projector
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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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def delete(self, *args, **kwargs):
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from openslides.projector.api import update_projector
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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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def get_slide_callback_name(self):
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"""
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Returns the name of the slide callback, which is used to render the slide.
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"""
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if self.slide_callback_name is None:
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raise ImproperlyConfigured(
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"SlideMixin requires either a definition of 'slide_callback_name'"
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" or an implementation of 'get_slide_callback_name()'")
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else:
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return self.slide_callback_name
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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 == 'projector':
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url_name = 'projector_activate_slide'
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elif link == 'projector_preview':
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url_name = 'projector_preview'
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if link in ('projector', 'projector_preview'):
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return '%s?pk=%d' % (
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reverse(url_name,
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args=[self.get_slide_callback_name()]),
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self.pk)
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return super(SlideMixin, self).get_absolute_url(link)
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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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pk = int_or_none(active_slide.get('pk', None))
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return (active_slide['callback'] == self.get_slide_callback_name() and
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self.pk == pk)
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class ProjectorSlide(SlideMixin, models.Model):
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2012-07-07 14:01:40 +02:00
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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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2013-08-04 12:59:11 +02:00
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slide_callback_name = 'projector_slide'
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2012-03-12 18:22:18 +01:00
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2013-04-22 19:59:05 +02:00
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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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2012-03-12 18:22:18 +01:00
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2013-08-04 12:59:11 +02:00
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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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2012-05-18 23:24:54 +02:00
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if link == 'delete':
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2013-08-04 12:59:11 +02:00
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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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2012-05-18 23:24:54 +02:00
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2012-03-12 18:22:18 +01:00
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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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2012-07-07 14:01:40 +02:00
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('can_manage_projector', ugettext_noop("Can manage the projector")),
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2012-08-15 10:58:29 +02:00
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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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2012-03-12 18:22:18 +01:00
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)
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