OpenSlides/openslides/core/projector.py
Oskar Hahn a4c00d5ee3 Angular Client
* Split angular app into a site- and a projector app
* Created client slide api and slides for customslide and user
* JS-function to activate a slide
2015-06-18 23:23:34 +02:00

85 lines
2.4 KiB
Python

from django.utils.timezone import now
from django.utils.translation import ugettext as _
from openslides.utils.projector import ProjectorElement, ProjectorRequirement
from .exceptions import ProjectorException
from .models import CustomSlide
from .views import CustomSlideViewSet
class CustomSlideSlide(ProjectorElement):
"""
Slide definitions for custom slide model.
"""
name = 'core/customslide'
def get_context(self):
pk = self.config_entry.get('id')
if not CustomSlide.objects.filter(pk=pk).exists():
raise ProjectorException(_('Custom slide does not exist.'))
return {'id': pk}
def get_requirements(self, config_entry):
pk = config_entry.get('id')
if pk is not None:
yield ProjectorRequirement(
view_class=CustomSlideViewSet,
view_action='retrieve',
pk=str(pk))
class Clock(ProjectorElement):
"""
Clock on the projector.
"""
name = 'core/clock'
def get_context(self):
return {'server_time': now().timestamp()}
class Countdown(ProjectorElement):
"""
Countdown on the projector.
To start the countdown write into the config field:
{
"countdown_time": <timestamp>,
"status": "go"
}
The timestamp is a POSIX timestamp (seconds) calculated from server
time, server time offset and countdown duration (countdown_time = now -
serverTimeOffset + duration).
To stop the countdown set the countdown time to the actual value of the
countdown (countdown_time = countdown_time - now + serverTimeOffset)
and set status to "stop".
To reset the countdown (it is not a reset in a functional way) just
change the countdown_time. The status value remain 'stop'.
To hide a running countdown add {"hidden": true}.
"""
name = 'core/countdown'
def get_context(self):
if self.config_entry.get('countdown_time') is None:
raise ProjectorException(_('No countdown time given.'))
if self.config_entry.get('status') is None:
raise ProjectorException(_('No status given.'))
return {'server_time': now().timestamp()}
class Message(ProjectorElement):
"""
Short message on the projector. Rendered as overlay.
"""
name = 'core/message'
def get_context(self):
if self.config_entry.get('message') is None:
raise ProjectorException(_('No message given.'))