from config.models import config from projector import SLIDE, Slide from django.template.loader import render_to_string def split_sid(sid): try: data = sid.split('-') except AttributeError: return None if len(data) == 2: model = data[0] id = data[1] return (model, id) if len(data) == 1: try: return (SLIDE[data[0]].key, None) except KeyError: return None return None def get_slide_from_sid(sid, element=False): try: key, id = split_sid(sid) except TypeError: return None if id is not None: object = SLIDE[key].model.objects.get(pk=id) if element: return object return object.slide() try: return SLIDE[key].func() except KeyError: return None def get_active_slide(only_sid=False): """ Returns the active slide. If no slide is active, or it can not find an Item, it raise an error if only_sid is True, returns only the id of this item. Returns None if not Item is active. Does not Raise Item.DoesNotExist """ sid = config["presentation"] if only_sid: return sid return get_slide_from_sid(sid) def set_active_slide(sid): config["presentation"] = sid def register_slidemodel(model, model_name=None, control_template=None, weight=0): #TODO: Warn if there already is a slide with this prefix if model_name is None: model_name = model.prefix if control_template is None: control_template = 'projector/default_control_slidemodel.html' category = model.__module__.split('.')[0] SLIDE[model_name] = Slide( model_slide=True, model=model, category=category, key=model.prefix, model_name=model_name, control_template=control_template, weight=weight, ) def register_slidefunc(key, func, control_template=None, weight=0, name=''): #TODO: Warn if there already is a slide with this prefix if control_template is None: control_template = 'projector/default_control_slidefunc.html' category = func.__module__.split('.')[0] SLIDE[key] = Slide( model_slide=False, func=func, category=category, key=key, control_template=control_template, weight=weight, name=name, ) def projector_message_set(message, sid=None): from models import ProjectorOverlay config['projector_message'] = message try: overlay = ProjectorOverlay.objects.get(def_name='Message') except ProjectorOverlay.DoesNotExist: overlay = ProjectorOverlay(def_name='Message', active=True) print "hier mal ein ", sid overlay.sid=sid overlay.save() def projector_message_delete(): config['projector_message'] = ''