From ecf52489623823dfd7e561bb70f6a6c8bd86188e Mon Sep 17 00:00:00 2001
From: Oskar Hahn <mail@oshahn.de>
Date: Sun, 4 Aug 2013 12:59:11 +0200
Subject: [PATCH] Rework of the projector with websocket

* Set a static projector title
* absolute_urls for the activate links
* update the projector when a slide changes (in save())
* insert the absolute_url template filter
* Preview to slides
* renamed is_active to is_active_slide
* The SlideMixin has to come before the PersonMixin
* Update list of speakers
* Render Countdown via JS
* Reconnect projector after connection lost
* Overlays can allways be active and do not appear in the widget
* Rewrote the clock as overlay
---
 .../account/personal_info_widget.html         |   8 +-
 openslides/agenda/models.py                   |  82 +++----
 openslides/agenda/signals.py                  |  37 ++--
 openslides/agenda/slides.py                   |  65 +++++-
 .../agenda/templates/agenda/item_row.html     |  26 +--
 .../agenda/templates/agenda/item_slide.html   |   8 +
 .../agenda/item_slide_list_of_speaker.html    |  40 ++++
 .../templates/agenda/item_slide_summary.html  |   9 +
 .../agenda/templates/agenda/overview.html     |   6 +-
 openslides/agenda/templates/agenda/view.html  |  22 +-
 .../agenda/templates/agenda/widget.html       |  38 ++--
 .../templates/projector/AgendaSummary.html    |  19 --
 .../templates/projector/AgendaText.html       |  19 --
 .../projector/agenda_list_of_speaker.html     |  46 ----
 openslides/agenda/views.py                    |  56 +++--
 openslides/assignment/__init__.py             |   1 +
 openslides/assignment/models.py               |  70 +++---
 openslides/assignment/slides.py               |  38 ++++
 .../assignment/assignment_detail.html         |  12 +-
 .../templates/assignment/slide.html           | 110 ++++++++++
 .../templates/assignment/widget.html          |   8 +-
 .../templates/projector/Assignment.html       | 122 -----------
 .../templates/mediafile/mediafile_list.html   |   6 +-
 openslides/motion/models.py                   |  16 +-
 openslides/motion/slides.py                   |  23 +-
 .../templates/motion/motion_detail.html       |  20 +-
 openslides/motion/templates/motion/slide.html |  69 ++++++
 .../motion/templates/motion/widget.html       |  12 +-
 .../motion/templates/projector/Motion.html    |  76 -------
 openslides/motion/views.py                    |   2 +-
 openslides/participant/__init__.py            |   1 +
 openslides/participant/models.py              | 116 ++++------
 openslides/participant/slides.py              |  48 +++++
 .../templates/participant/group_detail.html   |   2 +-
 .../templates/participant/group_overview.html |   2 +-
 .../templates/participant/group_slide.html    |   7 +
 .../templates/participant/group_widget.html   |  12 +-
 .../templates/participant/user_slide.html     |  15 ++
 .../templates/participant/user_widget.html    |  13 +-
 .../templates/projector/GroupSlide.html       |  13 --
 .../templates/projector/UserSlide.html        |  22 --
 openslides/participant/views.py               |   7 +-
 openslides/projector/__init__.py              |   2 +-
 openslides/projector/api.py                   | 202 ++++++++++--------
 openslides/projector/models.py                |  93 ++++++--
 openslides/projector/projector.py             | 136 ++++--------
 openslides/projector/signals.py               |  82 ++++---
 openslides/projector/slides.py                |  36 ++++
 .../projector/static/javascript/clock.js      |   8 +
 .../projector/static/javascript/countdown.js  |  25 +++
 .../projector/static/javascript/projector.js  | 107 +++++-----
 .../{base-projector.html => projector.html}   |  42 ++--
 .../templates/projector/ProjectorSlide.html   |  19 --
 .../templates/projector/all_overlays.html     |   3 +
 .../projector/custom_slide_widget.html        |  18 +-
 .../templates/projector/default.html          |   8 -
 .../templates/projector/default_slide.html    |   4 +
 .../projector/overlay_clock_projector.html    |   1 +
 .../overlay_countdown_projector.html          |   1 -
 .../projector/slide_projectorslide.html       |  12 ++
 openslides/projector/urls.py                  |  28 +--
 openslides/projector/views.py                 | 140 ++++--------
 openslides/utils/tornado_webserver.py         |  27 ++-
 openslides/utils/utils.py                     |   7 +
 openslides/utils/views.py                     |   1 +
 tests/agenda/models.py                        |  17 +-
 tests/agenda/test_list_of_speakers.py         |  17 +-
 tests/agenda/tests.py                         |  46 ++--
 68 files changed, 1242 insertions(+), 1164 deletions(-)
 create mode 100644 openslides/agenda/templates/agenda/item_slide.html
 create mode 100644 openslides/agenda/templates/agenda/item_slide_list_of_speaker.html
 create mode 100644 openslides/agenda/templates/agenda/item_slide_summary.html
 delete mode 100644 openslides/agenda/templates/projector/AgendaSummary.html
 delete mode 100644 openslides/agenda/templates/projector/AgendaText.html
 delete mode 100644 openslides/agenda/templates/projector/agenda_list_of_speaker.html
 create mode 100644 openslides/assignment/slides.py
 create mode 100644 openslides/assignment/templates/assignment/slide.html
 delete mode 100644 openslides/assignment/templates/projector/Assignment.html
 create mode 100644 openslides/motion/templates/motion/slide.html
 delete mode 100644 openslides/motion/templates/projector/Motion.html
 create mode 100644 openslides/participant/slides.py
 create mode 100644 openslides/participant/templates/participant/group_slide.html
 create mode 100644 openslides/participant/templates/participant/user_slide.html
 delete mode 100644 openslides/participant/templates/projector/GroupSlide.html
 delete mode 100644 openslides/participant/templates/projector/UserSlide.html
 create mode 100644 openslides/projector/slides.py
 create mode 100644 openslides/projector/static/javascript/clock.js
 create mode 100644 openslides/projector/static/javascript/countdown.js
 rename openslides/projector/templates/{base-projector.html => projector.html} (50%)
 delete mode 100644 openslides/projector/templates/projector/ProjectorSlide.html
 create mode 100644 openslides/projector/templates/projector/all_overlays.html
 delete mode 100644 openslides/projector/templates/projector/default.html
 create mode 100644 openslides/projector/templates/projector/default_slide.html
 create mode 100644 openslides/projector/templates/projector/overlay_clock_projector.html
 create mode 100644 openslides/projector/templates/projector/slide_projectorslide.html

diff --git a/openslides/account/templates/account/personal_info_widget.html b/openslides/account/templates/account/personal_info_widget.html
index d1e0d0ff3..9d21ecf43 100644
--- a/openslides/account/templates/account/personal_info_widget.html
+++ b/openslides/account/templates/account/personal_info_widget.html
@@ -4,7 +4,7 @@
 <ul style="line-height: 180%">
     {% trans 'I am on the list of speakers of the following items:' %}
     {% for item in items %}
-        <li><a href="{% model_url item %}">{{ item }}</a></li>
+        <li><a href="{{ item|absolute_url }}">{{ item }}</a></li>
     {% empty %}
         <li><i>{% trans 'None' %}</i></li>
     {% endfor %}
@@ -15,7 +15,7 @@
     {% trans 'I submitted the following motions:' %}
     {% for motion in submitted_motions %}
         <li>
-            <a href="{% model_url motion %}">
+            <a href="{{ motion|absolute_url }}">
                 {{ motion.identifier|add:' | '|default:'' }}
                 {{ motion }}
             </a>
@@ -31,7 +31,7 @@
     {% trans 'I support the following motions:' %}
     {% for motion in supported_motions %}
         <li>
-            <a href="{% model_url motion %}">
+            <a href="{{ motion|absolute_url }}">
                 {% if motion.identifier %}
                     [# {{ motion.identifier }}]
                 {% else %}
@@ -50,7 +50,7 @@
 <ul style="line-height: 180%">
     {% trans 'I am candidate for the following elections:' %}
     {% for assignment in assignments %}
-        <li><a href="{% model_url assignment %}">{{ assignment }}</a></li>
+        <li><a href="{{ assignment|absolute_url }}">{{ assignment }}</a></li>
     {% empty %}
         <li><i>{% trans 'None' %}</i></li>
     {% endfor %}
diff --git a/openslides/agenda/models.py b/openslides/agenda/models.py
index 776a5721c..fbd89fc0a 100644
--- a/openslides/agenda/models.py
+++ b/openslides/agenda/models.py
@@ -23,19 +23,19 @@ from mptt.models import MPTTModel, TreeForeignKey
 
 from openslides.utils.exceptions import OpenSlidesError
 from openslides.config.api import config
-from openslides.projector.projector import SlideMixin
-from openslides.projector.api import (
-    register_slidemodel, get_slide_from_sid, register_slidefunc)
 from openslides.utils.person.models import PersonField
+from openslides.projector.api import (
+    update_projector, get_active_slide, update_projector_overlay)
+from openslides.projector.models import SlideMixin
 
 
-class Item(MPTTModel, SlideMixin):
+class Item(SlideMixin, MPTTModel):
     """
     An Agenda Item
 
     MPTT-model. See http://django-mptt.github.com/django-mptt/
     """
-    prefix = 'item'
+    slide_callback_name = 'agenda'
 
     AGENDA_ITEM = 1
     ORGANIZATIONAL_ITEM = 2
@@ -98,6 +98,7 @@ class Item(MPTTModel, SlideMixin):
     """
     Field for generic relation to a related object. Id of the object.
     """
+    # TODO: rename it to object_pk
 
     content_object = generic.GenericForeignKey()
     """
@@ -119,6 +120,14 @@ class Item(MPTTModel, SlideMixin):
     class MPTTMeta:
         order_insertion_by = ['weight']
 
+    def save(self, *args, **kwargs):
+        super(Item, self).save(*args, **kwargs)
+        active_slide = get_active_slide()
+        active_slide_pk = active_slide.get('pk', None)
+        if (active_slide['callback'] == 'agenda' and
+                unicode(self.parent_id) == unicode(active_slide_pk)):
+            update_projector()
+
     def __unicode__(self):
         return self.get_title()
 
@@ -134,6 +143,11 @@ class Item(MPTTModel, SlideMixin):
             return reverse('item_edit', args=[str(self.id)])
         if link == 'delete':
             return reverse('item_delete', args=[str(self.id)])
+        if link == 'projector_list_of_speakers':
+            return '%s&type=list_of_speakers' % super(Item, self).get_absolute_url('projector')
+        if link == 'projector_summary':
+            return '%s&type=summary' % super(Item, self).get_absolute_url('projector')
+        return super(Item, self).get_absolute_url(link)
 
     def get_title(self):
         """
@@ -157,41 +171,6 @@ class Item(MPTTModel, SlideMixin):
         except AttributeError:
             raise NotImplementedError('You have to provide a get_agenda_title_supplement method on your related model.')
 
-    def slide(self):
-        """
-        Return a map with all data for the slide.
-
-        There are four cases:
-        * summary slide
-        * list of speakers
-        * related item, i. e. the slide of the related object
-        * normal slide of the item
-
-        The method returns only one of them according to the config value
-        'presentation_argument' and the attribute 'content_object'.
-        """
-        if config['presentation_argument'] == 'summary':
-            data = {'title': self.get_title(),
-                    'items': self.get_children().filter(type__exact=Item.AGENDA_ITEM),
-                    'template': 'projector/AgendaSummary.html'}
-
-        elif config['presentation_argument'] == 'show_list_of_speakers':
-            list_of_speakers = self.get_list_of_speakers(
-                old_speakers_count=config['agenda_show_last_speakers'])
-            data = {'title': self.get_title(),
-                    'item': self,
-                    'template': 'projector/agenda_list_of_speaker.html',
-                    'list_of_speakers': list_of_speakers}
-        elif self.content_object:
-            data = self.content_object.slide()
-
-        else:
-            data = {'item': self,
-                    'title': self.get_title(),
-                    'template': 'projector/AgendaText.html'}
-
-        return data
-
     def set_closed(self, closed=True):
         """
         Changes the closed-status of the item.
@@ -351,6 +330,14 @@ class Speaker(models.Model):
             ('can_be_speaker', ugettext_noop('Can put oneself on the list of speakers')),
         )
 
+    def save(self, *args, **kwargs):
+        super(Speaker, self).save(*args, **kwargs)
+        self.check_and_update_projector()
+
+    def delete(self, *args, **kwargs):
+        super(Speaker, self).delete(*args, **kwargs)
+        self.check_and_update_projector()
+
     def __unicode__(self):
         return unicode(self.person)
 
@@ -361,6 +348,21 @@ class Speaker(models.Model):
             return reverse('agenda_speaker_delete',
                            args=[self.item.pk, self.pk])
 
+    def check_and_update_projector(self):
+        """
+        Checks, if the agenda item, or parts of it, is on the projector.
+        If yes, it updates the projector.
+        """
+        active_slide = get_active_slide()
+        active_slide_pk = active_slide.get('pk', None)
+        slide_type = active_slide.get('type', None)
+        if (active_slide['callback'] == 'agenda' and
+                unicode(self.item_id) == unicode(active_slide_pk)):
+            if slide_type == 'list_of_speakers':
+                update_projector()
+            elif slide_type is None:
+                update_projector_overlay('agenda_speaker')
+
     def begin_speach(self):
         """
         Let the person speak.
diff --git a/openslides/agenda/signals.py b/openslides/agenda/signals.py
index c454da57f..e6bb8ea45 100644
--- a/openslides/agenda/signals.py
+++ b/openslides/agenda/signals.py
@@ -25,8 +25,7 @@ from openslides.config.api import config, ConfigVariable, ConfigPage
 
 from openslides.projector.signals import projector_overlays
 from openslides.projector.projector import Overlay
-from openslides.projector.api import (get_active_slide, get_slide_from_sid,
-                                      clear_projector_cache)
+from openslides.projector.api import get_active_slide
 
 from .models import Speaker, Item
 
@@ -94,23 +93,27 @@ def agenda_list_of_speakers(sender, **kwargs):
     def get_projector_html():
         """
         Returns an html-code to show on the projector.
+
+        The overlay is only shown on agenda-items and not on the
+        list-of-speakers slide.
         """
-        slide = get_slide_from_sid(get_active_slide(only_sid=True), element=True)
-        if not isinstance(slide, Item):
-            # Only show list of speakers overlay on agenda items
+        active_slide = get_active_slide()
+        slide_type = active_slide.get('type', None)
+        active_slide_pk = active_slide.get('pk', None)
+        if (active_slide['callback'] == 'agenda' and
+                slide_type != 'list_of_speakers' and
+                active_slide_pk is not None):
+            item = Item.objects.get(pk=active_slide_pk)
+            list_of_speakers = item.get_list_of_speakers(
+                old_speakers_count=config['agenda_show_last_speakers'],
+                coming_speakers_count=5)
+            context = {
+                'list_of_speakers': list_of_speakers,
+                'closed': item.speaker_list_closed,
+            }
+            return render_to_string('agenda/overlay_speaker_projector.html', context)
+        else:
             return None
-        if config['presentation_argument'] == 'show_list_of_speakers':
-            # Do not show list of speakers overlay on the list of speakers slide
-            return None
-        clear_projector_cache()
-        list_of_speakers = slide.get_list_of_speakers(
-            old_speakers_count=config['agenda_show_last_speakers'],
-            coming_speakers_count=5)
-        context = {
-            'list_of_speakers': list_of_speakers,
-            'closed': slide.speaker_list_closed,
-        }
-        return render_to_string('agenda/overlay_speaker_projector.html', context)
 
     return Overlay(name, get_widget_html, get_projector_html)
 
diff --git a/openslides/agenda/slides.py b/openslides/agenda/slides.py
index d4129fb3c..9d711789b 100644
--- a/openslides/agenda/slides.py
+++ b/openslides/agenda/slides.py
@@ -10,20 +10,63 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
-from django.utils.translation import ugettext_lazy, ugettext as _
+from django.template.loader import render_to_string
 
-from openslides.projector.api import register_slidemodel, register_slidefunc
+from openslides.config.api import config
+from openslides.projector.api import register_slide, get_projector_content
 
 from .models import Item
 
 
-def agenda_show():
-    data = {}
-    items = Item.objects.filter(parent=None, type__exact=Item.AGENDA_ITEM)
-    data['title'] = _("Agenda")
-    data['items'] = items
-    data['template'] = 'projector/AgendaSummary.html'
-    return data
+def agenda_slide(**kwargs):
+    """
+    Return the html code for all slides of the agenda app.
 
-register_slidemodel(Item, control_template='agenda/control_item.html')
-register_slidefunc('agenda', agenda_show, weight=-1, name=ugettext_lazy('Agenda'))
+    If no id is given, show a summary of all parent items.
+
+    If an id is given, show the item depending of the argument 'type'.
+
+    If 'type' is not set, show only the item.
+
+    If 'type' is 'summary', show a summary of all children of the item.
+
+    If 'type' is 'list_of_speakers', show the list of speakers for the item.
+    """
+    item_pk = kwargs.get('pk', None)
+    slide_type = kwargs.get('type', None)
+
+    try:
+        item = Item.objects.get(pk=item_pk)
+    except Item.DoesNotExist:
+        item = None
+
+    if slide_type == 'summary' or item is None:
+        context = {}
+        if item is None:
+            items = Item.objects.filter(parent=None, type__exact=Item.AGENDA_ITEM)
+        else:
+            items = item.get_children().filter(type__exact=Item.AGENDA_ITEM)
+            context['title'] = item.get_title()
+        context['items'] = items
+        return render_to_string('agenda/item_slide_summary.html', context)
+
+    elif slide_type == 'list_of_speakers':
+        list_of_speakers = item.get_list_of_speakers(
+            old_speakers_count=config['agenda_show_last_speakers'])
+        context = {'title': item.get_title(),
+                   'item': item,
+                   'list_of_speakers': list_of_speakers}
+        return render_to_string('agenda/item_slide_list_of_speaker.html', context)
+
+    elif item.content_object:
+        slide_dict = {
+            'callback': item.content_object.slide_callback_name,
+            'pk': item.content_object.pk}
+        return get_projector_content(slide_dict)
+
+    else:
+        context = {'item': item}
+        return render_to_string('agenda/item_slide.html', context)
+
+
+register_slide('agenda', agenda_slide)
diff --git a/openslides/agenda/templates/agenda/item_row.html b/openslides/agenda/templates/agenda/item_row.html
index 1b1ffac32..14c8b86e1 100644
--- a/openslides/agenda/templates/agenda/item_row.html
+++ b/openslides/agenda/templates/agenda/item_row.html
@@ -1,27 +1,27 @@
 {% load i18n %}
 {% load tags %}
 
-<div class="{% if node.active %}activeline{% endif %}">
+<div class="{% if node.is_active_slide %}activeline{% endif %}">
     {% if perms.agenda.can_manage_agenda or perms.projector.can_manage_projector %}
     <div class="manage">
         <span style="width: 1px; white-space: nowrap;">
         {% if perms.projector.can_manage_projector %}
-            <a href="{% url 'projector_activate_slide' node.sid  %}"
-                class="activate_link btn {% if node.active and not show_list and not summary %}btn-primary{% endif %} btn-mini"
+            <a href="{{ node|absolute_url:'projector' }}"
+                class="activate_link btn {% if node.is_active_slide and active_type == 'text' %}btn-primary{% endif %} btn-mini"
                 rel="tooltip" data-original-title="{% trans 'Show agenda item' %}">
-                <i class="icon-facetime-video {% if node.active and not show_list and not summary %}icon-white{% endif %}"></i>
+                <i class="icon-facetime-video {% if node.is_active_slide and active_type == 'text' %}icon-white{% endif %}"></i>
             </a>
-            <a href="{% url 'projector_activate_slide' node.sid 'show_list_of_speakers' %}"
-                class="activate_link btn btn-mini {% if node.active and show_list %}btn-primary{% endif %}"
+            <a href="{{ node|absolute_url:'projector_list_of_speakers' }}"
+                class="activate_link btn btn-mini {% if node.is_active_slide and active_type == 'list_of_speakers' %}btn-primary{% endif %}"
                 rel="tooltip" data-original-title="{% trans 'Show list of speakers' %}">
-                <i class="icon icon-bell {% if node.active and show_list %}icon-white{% endif %}"></i>
+                <i class="icon icon-bell {% if node.is_active_slide and active_type == 'list_of_speakers' %}icon-white{% endif %}"></i>
             </a>
         {% endif %}
         {% if perms.agenda.can_manage_agenda %}
-            <a href="{% model_url node 'edit' %}" rel="tooltip" data-original-title="{% trans 'Edit' %}" class="btn btn-mini">
+            <a href="{{ node|absolute_url:'edit' }}" rel="tooltip" data-original-title="{% trans 'Edit' %}" class="btn btn-mini">
                 <i class="icon-pencil"></i>
             </a>
-            <a href="{% model_url node 'delete' %}" rel="tooltip" data-original-title="{% trans 'Delete' %}" class="btn btn-mini">
+            <a href="{{ node|absolute_url:'delete' }}" rel="tooltip" data-original-title="{% trans 'Delete' %}" class="btn btn-mini">
                 <i class="icon-remove"></i>
             </a>
             <a href="{% if node.closed %}{% url 'item_open' node.id %}{% else %}{% url 'item_close' node.id %}{% endif %}"
@@ -30,10 +30,10 @@
                 <i class="{% if node.closed %}icon-checked-new{% else %}icon-unchecked-new{% endif %}"></i>
             </a>
             {% if not node.is_leaf_node %}
-                <a href="{% url 'projector_activate_slide' node.sid 'summary' %}"
-                    class="activate_link btn btn-mini {% if node.active and summary %}btn-primary{% endif %}"
+                <a href="{{ node|absolute_url:'projector_summary' }}"
+                    class="activate_link btn btn-mini {% if node.is_active_slide and active_type == 'summary' %}btn-primary{% endif %}"
                     title="{% trans 'Show summary for this item' %}">
-                    <i class="icon-summary {% if node.active and summary %}icon-white{% endif %}"></i>
+                    <i class="icon-summary {% if node.is_active_slide and active_type == 'summary' %}icon-white{% endif %}"></i>
                 </a>
             {% endif %}
         {% endif %}
@@ -79,7 +79,7 @@
             {{ form.self }}
             {{ form.parent }}
         {% endwith %}
-        <a href="{% model_url node 'view' %}">{% if node.type == node.ORGANIZATIONAL_ITEM %}<i>[{% endif %}{{ node }}{% if node.type == node.ORGANIZATIONAL_ITEM %}]</i>{% endif %}</a>
+        <a href="{{ node|absolute_url }}">{% if node.type == node.ORGANIZATIONAL_ITEM %}<i>[{% endif %}{{ node }}{% if node.type == node.ORGANIZATIONAL_ITEM %}]</i>{% endif %}</a>
         {{ node.get_title_supplement|safe }}
     </div>
 </div>
diff --git a/openslides/agenda/templates/agenda/item_slide.html b/openslides/agenda/templates/agenda/item_slide.html
new file mode 100644
index 000000000..9fad18538
--- /dev/null
+++ b/openslides/agenda/templates/agenda/item_slide.html
@@ -0,0 +1,8 @@
+{% load i18n %}
+
+{% if item.text %}
+    <h1>{{ item }}</h1>
+    <span>{{ item.text|safe|linebreaks }}</span>
+{% else %}
+    <div class="item_fullscreen">{{ item }}</div>
+{% endif %}
diff --git a/openslides/agenda/templates/agenda/item_slide_list_of_speaker.html b/openslides/agenda/templates/agenda/item_slide_list_of_speaker.html
new file mode 100644
index 000000000..a1a4611b2
--- /dev/null
+++ b/openslides/agenda/templates/agenda/item_slide_list_of_speaker.html
@@ -0,0 +1,40 @@
+{% load i18n %}
+
+<style type="text/css">
+    /* List of speakers – projector slide */
+    ul#list_of_speakers {
+        list-style-type: none;
+        padding: 0;}
+    #list_of_speakers li {
+        font-size: 130%;
+        line-height: 150%;}
+    #list_of_speakers .old_speaker {
+        color: #9FA9B7;}
+    #list_of_speakers .actual_speaker {
+        font-weight: bold;
+        margin-bottom: 0.5em;}
+</style>
+
+<h1>{{ title }}</h1>
+<h2 style="margin-top: -10px;">
+    {% trans 'List of speakers' %}
+    {% if item.speaker_list_closed %}(<span class="closed">{% trans 'closed' %}</span>){% endif %}
+</h2>
+
+<p>
+    {% if list_of_speakers %}
+    <ul id="list_of_speakers">
+        {% for speaker_dict in list_of_speakers %}
+        <li class="{{ speaker_dict.type }}"> {# old_speaker, actual_speaker, coming_speaker #}
+            {% if speaker_dict.type == 'coming_speaker' %}
+                {{ speaker_dict.prefix }}.
+            {% endif %}
+            {{ speaker_dict.speaker }}
+        </li>
+        {% endfor %}
+    </ul>
+    {% else %}
+        <i>{% trans 'The list of speakers is empty.' %}</i>
+    {% endif %}
+</p>
+
diff --git a/openslides/agenda/templates/agenda/item_slide_summary.html b/openslides/agenda/templates/agenda/item_slide_summary.html
new file mode 100644
index 000000000..03f0ec64a
--- /dev/null
+++ b/openslides/agenda/templates/agenda/item_slide_summary.html
@@ -0,0 +1,9 @@
+{% load i18n %}
+
+<h1>{% if title %}{{ title }}{% else %}{% trans "Agenda" %}{% endif %}</h1>
+
+<ul class="itemlist">
+    {% for item in items %}
+        <li{% if item.closed %} class="closed" {% endif %}>{{ item }}</li>
+    {% endfor %}
+</ul>
diff --git a/openslides/agenda/templates/agenda/overview.html b/openslides/agenda/templates/agenda/overview.html
index 095f04f48..c86d4e157 100644
--- a/openslides/agenda/templates/agenda/overview.html
+++ b/openslides/agenda/templates/agenda/overview.html
@@ -83,7 +83,7 @@
                     <th class="manage">{% trans "Actions" %}</th>
                 {% endif %}
             </tr>
-            <tr class="topline{% if active_sid == 'agenda' %} activeline{% endif %}">
+            <tr class="topline{% if agenda_is_active %} activeline{% endif %}">
                 <td class="title">
                     {% trans "Agenda" %}
                 </td>
@@ -98,9 +98,9 @@
                 {% if perms.projector.can_manage_projector %}
                     <span>
                     <a href="{% url 'projector_activate_slide' 'agenda' %}"
-                        class="activate_link btn {% if active_sid == 'agenda' %}btn-primary{% endif %} btn-mini"
+                        class="activate_link btn {% if agenda_is_active %}btn-primary{% endif %} btn-mini"
                         rel="tooltip" data-original-title="{% trans 'Show agenda' %}">
-                        <i class="icon-facetime-video {% if active_sid == 'agenda' %}icon-white{% endif %}"></i>
+                        <i class="icon-facetime-video {% if agenda_is_active %}icon-white{% endif %}"></i>
                     </a>
                     </span>
                 {% endif %}
diff --git a/openslides/agenda/templates/agenda/view.html b/openslides/agenda/templates/agenda/view.html
index 0d7bc6087..0903de6eb 100644
--- a/openslides/agenda/templates/agenda/view.html
+++ b/openslides/agenda/templates/agenda/view.html
@@ -22,10 +22,10 @@
     <small class="pull-right">
     <a href="{% url 'item_overview' %}" class="btn btn-mini"><i class="icon-chevron-left"></i> {% trans "Back to overview" %}</a>
     {% if perms.projector.can_manage_projector %}
-        <a href="{% url 'projector_activate_slide' item.sid  %}"
-            class="activate_link btn btn-mini {% if item.active and not show_list %}btn-primary{% endif %}"
+        <a href="{{ item|absolute_url:'projector' }}"
+            class="activate_link btn btn-mini {% if item.is_active and active_type != 'list_of_speakers' %}btn-primary{% endif %}"
             rel="tooltip" data-original-title="{% trans 'Show item' %}">
-            <i class="icon icon-facetime-video {% if item.active and not show_list %}icon-white{% endif %}"></i>
+            <i class="icon icon-facetime-video {% if item.is_active and active_type != 'list_of_speakers' %}icon-white{% endif %}"></i>
         </a>
     {% endif %}
     {% if perms.agenda.can_manage_agenda %}
@@ -35,8 +35,8 @@
             <span class="caret"></span>
         </a>
         <ul class="dropdown-menu pull-right">
-            <li><a href="{% model_url item 'update' %}"><i class="icon-pencil"></i> {% trans 'Edit item' %}</a></li>
-            <li><a href="{% model_url item 'delete' %}"><i class="icon-remove"></i> {% trans 'Delete item' %}</a></li>
+            <li><a href="{{ item|absolute_url:'update' }}"><i class="icon-pencil"></i> {% trans 'Edit item' %}</a></li>
+            <li><a href="{{ item|absolute_url:'delete' }}"><i class="icon-remove"></i> {% trans 'Delete item' %}</a></li>
         </ul>
     {% endif %}
     </div>
@@ -68,10 +68,10 @@
     {% endif %}
 {% endif %}
 {% if perms.projector.can_manage_projector %}
-    <a href="{% url 'projector_activate_slide' item.sid 'show_list_of_speakers' %}"
-        class="activate_link btn btn-mini {% if item.active and show_list %}btn-primary{% endif %}"
+    <a href="{{ item|absolute_url:'projector_list_of_speakers' }}"
+        class="activate_link btn btn-mini {% if item.is_active and active_type == 'list_of_speakers' %}btn-primary{% endif %}"
         rel="tooltip" data-original-title="{% trans 'Show list of speakers' %}">
-        <i class="icon icon-bell {% if item.active and show_list %}icon-white{% endif %}"></i>
+        <i class="icon icon-bell {% if item.is_active and active_type == 'list_of_speakers' %}icon-white{% endif %}"></i>
         {% trans 'Show list' %}
     </a>
 {% endif %}
@@ -119,15 +119,15 @@
             {% else %}
                 <small class="grey">[{{ speaker_dict.speaker.begin_time }}{% if speaker_dict.type == 'old_speaker' %} – {{ speaker_dict.speaker.end_time }}{% endif %}]</small>
             {% endif %}
-            <a href="{% model_url speaker_dict.speaker %}">{{ speaker_dict.speaker }}</a>
+            <a href="{{ speaker_dict.speaker|absolute_url }}">{{ speaker_dict.speaker }}</a>
             {% if perms.agenda.can_manage_agenda %}
                 {% if speaker_dict.type == 'actual_speaker' %}
                     <a href="{% url 'agenda_speaker_end_speach' item.pk %}" class="btn btn-mini btn-danger"><i class="icon-bell icon-white"></i> {% trans 'End speach' %}</a>
                 {% elif speaker_dict.type == 'coming_speaker' %}
-                    <a href="{% url 'agenda_speaker_speak' item.pk speaker_dict.speaker.person.person_id %}" 
+                    <a href="{% url 'agenda_speaker_speak' item.pk speaker_dict.speaker.person.person_id %}"
                     class="btn btn-mini"><i class="icon-bell"></i> {% trans "Begin speach" %}</a>
                 {% endif %}
-                <a href="{% model_url speaker_dict.speaker 'delete' %}" 
+                <a href="{{ speaker_dict.speaker|absolute_url:'delete' }}"
                     rel="tooltip" data-original-title="{% trans 'Delete' %}" class="btn btn-mini">
                     <i class="icon-remove"></i>
                 </a>
diff --git a/openslides/agenda/templates/agenda/widget.html b/openslides/agenda/templates/agenda/widget.html
index 8cb53f94b..86ebfb1b2 100644
--- a/openslides/agenda/templates/agenda/widget.html
+++ b/openslides/agenda/templates/agenda/widget.html
@@ -2,49 +2,49 @@
 {% load tags %}
 
 <ul style="line-height: 180%">
-    <li class="{% if agenda.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' agenda.key  %}"
-           class="activate_link btn {% if agenda.active %}btn-primary{% endif %} btn-mini"
+    <li class="{% if agenda_is_active %}activeline{% endif %}">
+        <a href="{% url 'projector_activate_slide' 'agenda' %}"
+           class="activate_link btn {% if agenda_is_active %}btn-primary{% endif %} btn-mini"
            rel="tooltip" data-original-title="{% trans 'Show' %}">
-            <i class="icon-facetime-video {% if agenda.active %}icon-white{% endif %}"></i>
+            <i class="icon-facetime-video {% if agenda_is_active %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% url 'projctor_preview_slide' agenda.key %}" title="{% trans 'Preview' %}" class="icon preview right">
+        <a href="{% url 'projector_preview' 'agenda' %}" title="{% trans 'Preview' %}" class="icon preview right">
             <span></span>
         </a>
-        {{ agenda.name }}
+        {% trans "Agenda" %}
     </li>
 </ul>
 <hr>
 <ul style="line-height: 180%">
 {% for item in items %}
-    <li class="{% if item.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' item.sid  %}"
-           class="activate_link btn {% if item.active and not summary and not speakers %}btn-primary{% endif %} btn-mini"
+    <li class="{% if item.is_active_slide %}activeline{% endif %}">
+        <a href="{{ item|absolute_url:'projector' }}"
+           class="activate_link btn {% if item.is_active_slide and active_type == 'text' %}btn-primary{% endif %} btn-mini"
            rel="tooltip" data-original-title="{% trans 'Show' %}">
-            <i class="icon-facetime-video {% if item.active and not summary and not speakers %}icon-white{% endif %}"></i>
+            <i class="icon-facetime-video {% if item.is_active_slide and active_type == 'text' %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% model_url item 'edit' %}" title="{% trans 'Edit' %}" class="btn btn-mini right">
+        <a href="{{ item|absolute_url:'edit' }}" title="{% trans 'Edit' %}" class="btn btn-mini right">
             <i class="icon-pencil"></i>
         </a>
-        <a href="{% url 'projctor_preview_slide' item.sid %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
+        <a href="{{ item|absolute_url:'projector_preview' }}" title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
-        <a href="{% url 'projector_activate_slide' item.sid 'show_list_of_speakers' %}"
-          class="activate_link btn btn-mini right {% if item.active and speakers %}btn-primary{% endif %}"
+        <a href="{{ item|absolute_url:'projector_list_of_speakers' }}"
+          class="activate_link btn btn-mini right {% if item.is_active_slide and active_type == 'list_of_speakers' %}btn-primary{% endif %}"
           rel="tooltip" data-original-title="{% trans 'Show list of speakers' %}">
-          <i class="icon icon-bell {% if item.active and speakers %}icon-white{% endif %}"></i>
+          <i class="icon icon-bell {% if item.is_active_slide and active_type == 'list_of_speakers' %}icon-white{% endif %}"></i>
         </a>
         {% if not item.is_leaf_node %}
-        <a href="{% url 'projector_activate_slide' item.sid 'summary' %}"
-          class="activate_link btn btn-mini {% if item.active and summary %}btn-primary{% endif %} right"
+        <a href="{{ item|absolute_url:'projector_summary' }}"
+          class="activate_link btn btn-mini {% if item.is_active_slide and active_type == 'summary' %}btn-primary{% endif %} right"
           rel="tooltip" data-original-title="{% trans 'Show summary for this item' %}">
-            <i class="icon-summary {% if item.active and summary %}icon-white{% endif %}"></i>
+            <i class="icon-summary {% if item.is_active_slide and active_type == 'summary' %}icon-white{% endif %}"></i>
         </a>
         {% endif %}
         {% for p in item.get_ancestors %}
             <span class="indentation"></span>
         {% endfor %}
-        <a href="{% model_url item 'view' %}">{% if item.type == item.ORGANIZATIONAL_ITEM %}<i>[{% endif %}{{ item }}{% if item.type == item.ORGANIZATIONAL_ITEM %}]</i>{% endif %}</a>
+        <a href="{{ item|absolute_url }}">{% if item.type == item.ORGANIZATIONAL_ITEM %}<i>[{% endif %}{{ item }}{% if item.type == item.ORGANIZATIONAL_ITEM %}]</i>{% endif %}</a>
         {{ item.get_title_supplement|safe }}
     </li>
 {% empty %}
diff --git a/openslides/agenda/templates/projector/AgendaSummary.html b/openslides/agenda/templates/projector/AgendaSummary.html
deleted file mode 100644
index 26eece6eb..000000000
--- a/openslides/agenda/templates/projector/AgendaSummary.html
+++ /dev/null
@@ -1,19 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-
-{% block title %}
-    {% if title %} {{ title }} {% else %} {% trans "Agenda" %} {% endif %}
-{% endblock %}
-
-{% block content %}
-    <h1>{% if title %}{{ title }}{% else %}{% trans "Agenda" %}{% endif %}</h1>
-{% endblock %}
-
-{% block scrollcontent %}
-    <ul class="itemlist">
-    {% for item in items %}
-        <li{% if item.closed %} class="closed" {% endif %}>{{ item }}</li>
-    {% endfor %}
-    </ul>
-{% endblock %}
diff --git a/openslides/agenda/templates/projector/AgendaText.html b/openslides/agenda/templates/projector/AgendaText.html
deleted file mode 100644
index e7e01e01f..000000000
--- a/openslides/agenda/templates/projector/AgendaText.html
+++ /dev/null
@@ -1,19 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-
-{% block title %}{{ item }}{% endblock %}
-
-{% block content %}
-    {% if item.text %}
-        <h1>{{ item }}</h1>
-    {% else %}
-        <div class="item_fullscreen">{{ item }}</div>
-    {% endif %}
-{% endblock %}
-
-{% block scrollcontent %}
-    {% if item.text %}
-        <span>{{ item.text|safe|linebreaks }}</span>
-    {% endif %}
-{% endblock %}
diff --git a/openslides/agenda/templates/projector/agenda_list_of_speaker.html b/openslides/agenda/templates/projector/agenda_list_of_speaker.html
deleted file mode 100644
index bf0bab78d..000000000
--- a/openslides/agenda/templates/projector/agenda_list_of_speaker.html
+++ /dev/null
@@ -1,46 +0,0 @@
-{% extends 'base-projector.html' %}
-
-{% load i18n %}
-
-{% block title %}{{ item }}{% endblock %}
-
-{% block content %}
-    <style type="text/css">
-        /* List of speakers – projector slide */
-        ul#list_of_speakers {
-            list-style-type: none;
-            padding: 0;}
-        #list_of_speakers li {
-            font-size: 130%;
-            line-height: 150%;}
-        #list_of_speakers .old_speaker {
-            color: #9FA9B7;}
-        #list_of_speakers .actual_speaker {
-            font-weight: bold;
-            margin-bottom: 0.5em;}
-    </style>
-    <h1>{{ title }}</h1>
-    <h2 style="margin-top: -10px;">
-        {% trans 'List of speakers' %}
-        {% if item.speaker_list_closed %}(<span class="closed">{% trans 'closed' %}</span>){% endif %}
-    </h2>
-{% endblock %}
-
-{% block scrollcontent %}
-<p>
-    {% if list_of_speakers %}
-    <ul id="list_of_speakers">
-        {% for speaker_dict in list_of_speakers %}
-        <li class="{{ speaker_dict.type }}"> {# old_speaker, actual_speaker, coming_speaker #}
-            {% if speaker_dict.type == 'coming_speaker' %}
-                {{ speaker_dict.prefix }}.
-            {% endif %}
-            {{ speaker_dict.speaker }}
-        </li>
-        {% endfor %}
-    </ul>
-    {% else %}
-        <i>{% trans 'The list of speakers is empty.' %}</i>
-    {% endif %}
-</p>
-{% endblock %}
diff --git a/openslides/agenda/views.py b/openslides/agenda/views.py
index fd9347c99..acb865750 100644
--- a/openslides/agenda/views.py
+++ b/openslides/agenda/views.py
@@ -29,8 +29,8 @@ from openslides.utils.views import (
     DetailView, FormView, SingleObjectMixin)
 from openslides.utils.template import Tab
 from openslides.utils.utils import html_strong
-from openslides.projector.api import get_active_slide, get_slide_from_sid
-from openslides.projector.projector import Widget, SLIDE
+from openslides.projector.api import get_active_slide, update_projector
+from openslides.projector.projector import Widget
 from .models import Item, Speaker
 from .forms import ItemOrderForm, ItemForm, AppendSpeakerForm, RelatedItemForm
 
@@ -83,14 +83,21 @@ class Overview(TemplateView):
             (duration.days * 24 + duration.seconds / 3600.0),
             (duration.seconds / 60.0 % 60))
 
+        active_slide = get_active_slide()
+        if active_slide['callback'] == 'agenda':
+            agenda_active = active_slide.get('pk', 'agenda') == 'agenda'
+            active_type = active_slide.get('type', 'text')
+        else:
+            agenda_is_active = None
+            active_type = None
+
         context.update({
             'items': items,
-            'active_sid': get_active_slide(only_sid=True),
+            'agenda_is_active': agenda_is_active,
             'duration': duration,
             'start': start,
             'end': end,
-            'summary': config['presentation_argument'] == 'summary',
-            'show_list': config['presentation_argument'] == 'show_list_of_speakers'})
+            'active_type': active_type})
         return context
 
     @transaction.commit_manually
@@ -100,6 +107,7 @@ class Overview(TemplateView):
                 request,
                 _('You are not authorized to manage the agenda.'))
             return self.render_to_response(context)
+
         transaction.commit()
         for item in Item.objects.all():
             form = ItemOrderForm(request.POST, prefix="i%d" % item.id)
@@ -121,6 +129,11 @@ class Overview(TemplateView):
         # TODO: assure, that it is a valid tree
         context = self.get_context_data(**kwargs)
         transaction.commit()
+
+        if get_active_slide()['callback'] == 'agenda':
+            update_projector()
+        context = self.get_context_data(**kwargs)
+        transaction.commit()
         return self.render_to_response(context)
 
 
@@ -138,11 +151,16 @@ class AgendaItemView(SingleObjectMixin, FormView):
     def get_context_data(self, **kwargs):
         self.object = self.get_object()
         list_of_speakers = self.object.get_list_of_speakers()
+
+        active_slide = get_active_slide()
+        active_type = active_slide.get('type', None)
+
         kwargs.update({
             'object': self.object,
             'list_of_speakers': list_of_speakers,
-            'is_on_the_list_of_speakers': Speaker.objects.filter(item=self.object, begin_time=None, person=self.request.user).exists(),
-            'show_list': config['presentation_argument'] == 'show_list_of_speakers',
+            'is_on_the_list_of_speakers': Speaker.objects.filter(
+                item=self.object, begin_time=None, person=self.request.user).exists(),
+            'active_type': active_type,
         })
         return super(AgendaItemView, self).get_context_data(**kwargs)
 
@@ -486,11 +504,14 @@ class CurrentListOfSpeakersView(RedirectView):
         """
         Returns the current Item, or None, if the current Slide is not an Agenda Item.
         """
-        slide = get_slide_from_sid(get_active_slide(only_sid=True), element=True)
-        if not isinstance(slide, Item):
-            return None
+        active_slide = get_active_slide()
+        if active_slide['callback'] == 'agenda':
+            try:
+                return Item.objects.get(pk=active_slide.get('pk', None))
+            except Item.DoesNotExist:
+                return None
         else:
-            return slide
+            return None
 
     def get_redirect_url(self):
         """
@@ -583,6 +604,14 @@ def get_widgets(request):
     """
     Returns the agenda widget for the projector tab.
     """
+    active_slide = get_active_slide()
+    if active_slide['callback'] == 'agenda':
+        agenda_is_active = active_slide.get('pk', 'agenda') == 'agenda'
+        active_type = active_slide.get('type', 'text')
+    else:
+        agenda_is_active = None
+        active_type = None
+
     return [
         Widget(
             request,
@@ -590,10 +619,9 @@ def get_widgets(request):
             display_name=_('Agenda'),
             template='agenda/widget.html',
             context={
-                'agenda': SLIDE['agenda'],
+                'agenda_is_active': agenda_is_active,
                 'items': Item.objects.all(),
-                'summary': config['presentation_argument'] == 'summary',
-                'speakers': config['presentation_argument'] == 'show_list_of_speakers'},
+                'active_type': active_type},
             permission_required='projector.can_manage_projector',
             default_column=1,
             default_weight=20),
diff --git a/openslides/assignment/__init__.py b/openslides/assignment/__init__.py
index 5d5108c21..29c22cb0b 100644
--- a/openslides/assignment/__init__.py
+++ b/openslides/assignment/__init__.py
@@ -11,3 +11,4 @@
 """
 
 from . import signals
+from . import slides
diff --git a/openslides/assignment/models.py b/openslides/assignment/models.py
index 74ec9dca4..650d517d1 100644
--- a/openslides/assignment/models.py
+++ b/openslides/assignment/models.py
@@ -18,8 +18,7 @@ from django.utils.datastructures import SortedDict
 from openslides.utils.person import PersonField
 from openslides.utils.utils import html_strong
 from openslides.config.api import config
-from openslides.projector.api import register_slidemodel
-from openslides.projector.projector import SlideMixin
+from openslides.projector.models import SlideMixin
 from openslides.poll.models import (
     BasePoll, CountInvalid, CountVotesCast, BaseOption, PublishPollMixin, BaseVote)
 
@@ -37,8 +36,9 @@ class AssignmentCandidate(models.Model):
         unique_together = ("assignment", "person")
 
 
-class Assignment(models.Model, SlideMixin):
-    prefix = ugettext_noop('assignment')
+class Assignment(SlideMixin, models.Model):
+    slide_callback_name = 'assignment'
+
     STATUS = (
         ('sea', ugettext_lazy('Searching for candidates')),
         ('vot', ugettext_lazy('Voting')),
@@ -53,6 +53,27 @@ class Assignment(models.Model, SlideMixin):
         verbose_name=ugettext_lazy("Comment on the ballot paper"))
     status = models.CharField(max_length=3, choices=STATUS, default='sea')
 
+    class Meta:
+        permissions = (
+            ('can_see_assignment', ugettext_noop('Can see assignments')),  # TODO: Add plural s to the codestring
+            ('can_nominate_other', ugettext_noop('Can nominate another person')),
+            ('can_nominate_self', ugettext_noop('Can nominate oneself')),
+            ('can_manage_assignment', ugettext_noop('Can manage assignments')),  # TODO: Add plural s also to the codestring
+        )
+        ordering = ('name',)
+
+    def __unicode__(self):
+        return self.name
+
+    def get_absolute_url(self, link='detail'):
+        if link == 'detail' or link == 'view':
+            return reverse('assignment_detail', args=[str(self.id)])
+        if link == 'update' or link == 'update':
+            return reverse('assignment_update', args=[str(self.id)])
+        if link == 'delete':
+            return reverse('assignment_delete', args=[str(self.id)])
+        return super(Assignment, self).get_absolute_url(link)
+
     def set_status(self, status):
         status_dict = dict(self.STATUS)
         if status not in status_dict:
@@ -206,45 +227,6 @@ class Assignment(models.Model, SlideMixin):
     def get_agenda_title_supplement(self):
         return '(%s)' % _('Assignment')
 
-    def slide(self):
-        """
-        return the slide dict
-        """
-        polls = self.poll_set
-        data = super(Assignment, self).slide()
-        data['assignment'] = self
-        data['title'] = self.name
-        data['some_polls_available'] = polls.exists()
-        data['polls'] = polls.filter(published=True)
-        data['vote_results'] = self.vote_results(only_published=True)
-        data['assignment_publish_winner_results_only'] = \
-            config['assignment_publish_winner_results_only']
-        data['template'] = 'projector/Assignment.html'
-        return data
-
-    def get_absolute_url(self, link='detail'):
-        if link == 'detail' or link == 'view':
-            return reverse('assignment_detail', args=[str(self.id)])
-        if link == 'update' or link == 'edit':
-            return reverse('assignment_update', args=[str(self.id)])
-        if link == 'delete':
-            return reverse('assignment_delete', args=[str(self.id)])
-
-    def __unicode__(self):
-        return self.name
-
-    class Meta:
-        permissions = (
-            ('can_see_assignment', ugettext_noop('Can see assignments')),  # TODO: Add plural s to the codestring
-            ('can_nominate_other', ugettext_noop('Can nominate another person')),
-            ('can_nominate_self', ugettext_noop('Can nominate oneself')),
-            ('can_manage_assignment', ugettext_noop('Can manage assignments')),  # TODO: Add plural s also to the codestring
-        )
-        ordering = ('name',)
-        verbose_name = ugettext_noop('Assignment')
-
-register_slidemodel(Assignment)
-
 
 class AssignmentVote(BaseVote):
     option = models.ForeignKey('AssignmentOption')
@@ -294,7 +276,7 @@ class AssignmentPoll(BasePoll, CountInvalid, CountVotesCast, PublishPollMixin):
         return self.assignment.poll_set.filter(id__lte=self.id).count()
 
     @models.permalink
-    def get_absolute_url(self, link='view'):
+    def get_absolute_url(self, link='detail'):
         if link == 'view' or link == 'detail' or link == 'update':
             return ('assignment_poll_view', [str(self.id)])
         if link == 'delete':
diff --git a/openslides/assignment/slides.py b/openslides/assignment/slides.py
new file mode 100644
index 000000000..dee057a82
--- /dev/null
+++ b/openslides/assignment/slides.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+    openslides.assignment.slides
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Slides for the assignment app.
+
+    :copyright: 2011–2013 by OpenSlides team, see AUTHORS.
+    :license: GNU GPL, see LICENSE for more details.
+"""
+
+from django.template.loader import render_to_string
+
+from openslides.config.api import config
+from openslides.projector.api import register_slide
+from .models import Assignment
+
+
+def assignment_slide(**kwargs):
+    """
+    Slide for an Assignment
+    """
+    assignment_pk = kwargs.get('pk', None)
+    try:
+        assignment = Assignment.objects.get(pk=assignment_pk)
+    except Assignment.DoesNotExist:
+        return ''
+
+    polls = assignment.poll_set
+    context = {
+        'polls': polls.filter(published=True),
+        'vote_results': assignment.vote_results(only_published=True),
+        'assignment': assignment}
+
+    return render_to_string('assignment/slide.html', context)
+
+register_slide(Assignment.slide_callback_name, assignment_slide)
diff --git a/openslides/assignment/templates/assignment/assignment_detail.html b/openslides/assignment/templates/assignment/assignment_detail.html
index a43d57947..690043390 100644
--- a/openslides/assignment/templates/assignment/assignment_detail.html
+++ b/openslides/assignment/templates/assignment/assignment_detail.html
@@ -65,7 +65,7 @@
     <ol>
     {% for person in assignment.get_participants %}
         <li>
-            <a href="{{ person|absolute_url:'detail' }}">{{ person }}</a>
+            <a href="{{ person|absolute_url }}">{{ person }}</a>
             {% if perms.assignment.can_manage_assignment %}
                 {% if assignment.status == "sea" or assignment.status == "vot" %}
                     <a href="{% url 'assignment_delother' assignment.id person.person_id %}" class="btn btn-mini" rel="tooltip" data-original-title="{% trans 'Remove candidate' %}"><i class="icon-remove"></i></a>
@@ -126,7 +126,7 @@
     <ul>
     {% for person in blocked_candidates %}
         <li>
-            <a href="{{ person|absolute_url:'detail' }}">{{ person }}</a>
+            <a href="{{ person|absolute_url }}">{{ person }}</a>
             <a class="btn btn-mini" href="{% url 'assignment_delother' assignment.id person.person_id %}"
                 rel="tooltip" data-original-title="{% trans 'Remove candidate' %}">
                 <i class="icon-ban-circle"></i>
@@ -168,16 +168,16 @@
                             <i class="icon-unchecked-new"></i>
                             {% endif %}
                         </a>
-                        <a href="{{ poll|absolute_url:'update' }}" class="btn btn-mini"
+                        <a href="{% url 'assignment_poll_view' poll.id %}" class="btn btn-mini"
                             rel="tooltip" data-original-title="{% trans 'Edit' %}"><i class="icon-pencil"></i></a>
-                        <a href="{{ poll|absolute_url:'delete' }}" class="btn btn-mini"
+                        <a href="{% url 'assignment_poll_delete' poll.id %}" class="btn btn-mini"
                             rel="tooltip" data-original-title="{% trans 'Delete' %}"><i class="icon-remove"></i></a>
                     {% endif %}
                 </th>
             {% endfor %}
             {% if assignment.candidates and perms.assignment.can_manage_assignment and assignment.status == "vot" %}
                 <th class="span1 nobr">
-                    <a href="{% url 'assignment_poll_create' assignment.id %}" class="btn btn-mini">
+                    <a href="{% url 'assignment_gen_poll' assignment.id %}" class="btn btn-mini">
                        <i class="icon-plus"></i> {% trans 'New ballot' %}
                     </a>
                 </th>
@@ -200,7 +200,7 @@
                         <a class="election_link" href="{% url 'assignment_user_elected' assignment.id candidate.person_id %}"></a>
                     {% endif %}
                 {% endif %}
-                <a href="{{ candidate|absolute_url:'detail' }}">{{ candidate }}</a>
+                <a href="{{ candidate|absolute_url }}">{{ candidate }}</a>
             </td>
             {% for vote in poll_list %}
                 <td style="white-space:nowrap;">
diff --git a/openslides/assignment/templates/assignment/slide.html b/openslides/assignment/templates/assignment/slide.html
new file mode 100644
index 000000000..fce79f415
--- /dev/null
+++ b/openslides/assignment/templates/assignment/slide.html
@@ -0,0 +1,110 @@
+{% load i18n %}
+{% load staticfiles %}
+{% load tags %}
+
+{% if assignment.status != "fin" %}
+<div id="sidebar">
+    <div class="box">
+    <p><b>{% trans "Status" %}:</b><br>
+    {% trans assignment.get_status_display %}</p>
+    {% if assignment.status == "sea" or assignment.status == "vot" %}
+        <p><b>{% trans "Number of available posts" %}:</b><br>
+        {{ assignment.posts }}</p>
+    {% endif %}
+    </div>
+</div>
+{% endif %}
+
+<h1>{% trans "Election" %}: {{ assignment }}</h1>
+{% if not assignment.candidates %}
+    <p>
+        <div class="text">{{ assignment.description|linebreaks }}</div>
+    </p>
+{% endif %}
+
+{% if assignment.candidates and assignment.status != "fin" %}
+    <h3>{% trans "Candidates" %}</h3>
+    <ol>
+        {% for candidate in assignment.candidates %}
+            <li>{{ candidate }} </li>
+        {% empty %}
+            <li style="list-style: none outside none;">
+                <i>{% trans "No candidates available." %}</i>
+            </li>
+        {% endfor %}
+    </ol>
+    <p><br></p>
+{% endif %}
+
+{% if polls.exists %}
+    <h3>{% trans "Election results" %}</h3>
+    <table>
+
+    <tr>
+        <th>{% trans "Candidates" %}</th>
+        {% for poll in polls %}
+            <th>
+                <nobr>{{ poll.get_ballot }}. {% trans "ballot" %}</nobr>
+            </th>
+        {% endfor %}
+    </tr>
+
+    {% for candidate, poll_list in vote_results.items %}
+        <tr class="{% cycle 'odd' '' as rowcolors %}">
+            <td class="candidate{% if candidate in assignment.elected %} elected{% endif %}">
+                {% if candidate in assignment.elected %}
+                    <a class="elected">
+                        <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Candidate is elected' %}">
+                    </a>
+                {% endif %}
+                {{ candidate }}
+            </td>
+        {% for vote in poll_list %}
+            <td style="white-space:nowrap;"{% if candidate in assignment.elected %} class="elected"{% endif %}>
+                {% if not "assignment_publish_winner_results_only"|get_config or candidate in assignment.elected %}
+                    {% if 'Yes' in vote and 'No' in vote and 'Abstain' in vote %}
+                        <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Yes' %}"> {{ vote.Yes }}<br>
+                        <img src="{% static 'img/voting-no.png' %}" title="{% trans 'No' %}"> {{ vote.No }}<br>
+                        <img src="{% static 'img/voting-abstention.png' %}" title="{% trans 'Abstention' %}"> {{ vote.Abstain }}<br>
+                    {% elif 'Votes' in vote %}
+                        <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Yes' %}"> {{ vote.Votes }}
+                    {% elif vote == None %}
+                        {% trans 'was not a <br> candidate'%}
+                    {% else %}
+                        &nbsp;
+                    {% endif %}
+                {% else %}
+                    &nbsp;
+                {% endif %}
+            </td>
+        {% endfor %}
+        </tr>
+    {% endfor %}
+    <tr class="{% cycle rowcolors %}">
+        <td>{% trans 'Invalid votes' %}</td>
+        {% for poll in polls %}
+            <td style="white-space:nowrap;">
+                {% if  poll.has_votes %}
+                    <img src="{% static 'img/voting-invalid.png' %}" title="{% trans 'Invalid' %}">
+                    {{ poll.print_votesinvalid }}
+                {% endif %}
+            </td>
+
+        {% endfor %}
+    </tr>
+    <tr class="total">
+        <td>
+            <strong>{% trans 'Votes cast' %}</strong>
+        </td>
+        {% for poll in polls %}
+
+            <td style="white-space:nowrap;">
+                {% if poll.has_votes %}
+                    <img src="{% static 'img/voting-total.png' %}" title="{% trans 'Votes cast' %}">
+                    <strong>{{ poll.print_votescast }}</strong>
+                {% endif %}
+            </td>
+        {% endfor %}
+    </tr>
+    </table>
+{% endif %}
diff --git a/openslides/assignment/templates/assignment/widget.html b/openslides/assignment/templates/assignment/widget.html
index 5611d8b7f..635f8e4a3 100644
--- a/openslides/assignment/templates/assignment/widget.html
+++ b/openslides/assignment/templates/assignment/widget.html
@@ -3,17 +3,17 @@
 
 <ul style="line-height: 180%">
 {% for assignment in assignments %}
-    <li class="{% if assignment.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' assignment.sid  %}" class="activate_link btn {% if assignment.active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
+    <li class="{% if assignment.is_active_slide %}activeline{% endif %}">
+        <a href="{{ assignment|absolute_url:'projector' }}" class="activate_link btn {% if assignment.active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
             <i class="icon-facetime-video {% if assignment.active %}icon-white{% endif %}"></i>
         </a>&nbsp;
         <a href="{{ assignment|absolute_url:'update' }}" title="{% trans 'Edit' %}" class="btn btn-mini right">
             <i class="icon-pencil"></i>
         </a>
-        <a href="{% url 'projctor_preview_slide' assignment.sid %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
+        <a href="{{ assignment|absolute_url:'projector_preview' }}" title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
-        <a href="{{ assignment|absolute_url:'detail' }}">{{ assignment }}</a>
+        <a href="{{ assignment|absolute_url }}">{{ assignment }}</a>
     </li>
 {% empty %}
     <li>{% trans 'No assignments available.' %}</li>
diff --git a/openslides/assignment/templates/projector/Assignment.html b/openslides/assignment/templates/projector/Assignment.html
deleted file mode 100644
index abe8a8e96..000000000
--- a/openslides/assignment/templates/projector/Assignment.html
+++ /dev/null
@@ -1,122 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-{% load staticfiles %}
-
-{% block title %}{{ assignment }}{% endblock %}
-
-{% block header %}
-    <link type="text/css" rel="stylesheet" media="all" href="{% static 'styles/assignment.css' %}" />
-    <script type="text/javascript" src="{% static 'javascript/assignment.js' %}"></script>
-{% endblock %}
-
-{% block content %}
-    {% if assignment.status != "fin" %}
-    <div id="sidebar">
-        <div class="box">
-        <p><b>{% trans "Status" %}:</b><br>
-        {% trans assignment.get_status_display %}</p>
-        {% if assignment.status == "sea" or assignment.status == "vot" %}
-            <p><b>{% trans "Number of available posts" %}:</b><br>
-            {{ assignment.posts }}</p>
-        {% endif %}
-        </div>
-    </div>
-    {% endif %}
-    <h1>{% trans "Election" %}: {{ assignment }}</h1>
-{% endblock %}
-
-{% block scrollcontent %}
-    {% if not assignment.candidates %}
-        <p>
-            <div class="text">{{ assignment.description|linebreaks }}</div>
-        </p>
-    {% endif %}
-
-    {% if assignment.candidates and assignment.status != "fin" %}
-        <h3>{% trans "Candidates" %}</h3>
-        <ol>
-            {% for candidate in assignment.candidates %}
-                <li>{{ candidate }} </li>
-            {% empty %}
-                <li style="list-style: none outside none;">
-                    <i>{% trans "No candidates available." %}</i>
-                </li>
-            {% endfor %}
-        </ol>
-        <p><br></p>
-    {% endif %}
-
-    {% if polls.exists %}
-        <h3>{% trans "Election results" %}</h3>
-        <table>
-
-        <tr>
-            <th>{% trans "Candidates" %}</th>
-            {% for poll in polls %}
-                <th>
-                    <nobr>{{ poll.get_ballot }}. {% trans "ballot" %}</nobr>
-                </th>
-            {% endfor %}
-        </tr>
-
-        {% for candidate, poll_list in vote_results.items %}
-            <tr class="{% cycle 'odd' '' as rowcolors %}">
-                <td class="candidate{% if candidate in assignment.elected %} elected{% endif %}">
-                    {% if candidate in assignment.elected %}
-                        <a class="elected">
-                            <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Candidate is elected' %}">
-                        </a>
-                    {% endif %}
-                    {{ candidate }}
-                </td>
-            {% for vote in poll_list %}
-                <td style="white-space:nowrap;"{% if candidate in assignment.elected %} class="elected"{% endif %}>
-                    {% if not assignment_publish_winner_results_only or candidate in assignment.elected %}
-                        {% if 'Yes' in vote and 'No' in vote and 'Abstain' in vote %}
-                            <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Yes' %}"> {{ vote.Yes }}<br>
-                            <img src="{% static 'img/voting-no.png' %}" title="{% trans 'No' %}"> {{ vote.No }}<br>
-                            <img src="{% static 'img/voting-abstention.png' %}" title="{% trans 'Abstention' %}"> {{ vote.Abstain }}<br>
-                        {% elif 'Votes' in vote %}
-                            <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Yes' %}"> {{ vote.Votes }}
-                        {% elif vote == None %}
-                            {% trans 'was not a <br> candidate'%}
-                        {% else %}
-                            &nbsp;
-                        {% endif %}
-                    {% else %}
-                        &nbsp;
-                    {% endif %}
-                </td>
-            {% endfor %}
-            </tr>
-        {% endfor %}
-        <tr class="{% cycle rowcolors %}">
-            <td>{% trans 'Invalid votes' %}</td>
-            {% for poll in polls %}
-                <td style="white-space:nowrap;">
-                    {% if  poll.has_votes %}
-                        <img src="{% static 'img/voting-invalid.png' %}" title="{% trans 'Invalid' %}">
-                        {{ poll.print_votesinvalid }}
-                    {% endif %}
-                </td>
-
-            {% endfor %}
-        </tr>
-        <tr class="total">
-            <td>
-                <strong>{% trans 'Votes cast' %}</strong>
-            </td>
-            {% for poll in polls %}
-
-                <td style="white-space:nowrap;">
-                    {% if poll.has_votes %}
-                        <img src="{% static 'img/voting-total.png' %}" title="{% trans 'Votes cast' %}">
-                        <strong>{{ poll.print_votescast }}</strong>
-                    {% endif %}
-                </td>
-            {% endfor %}
-        </tr>
-        </table>
-    {% endif %}
-{% endblock %}
diff --git a/openslides/mediafile/templates/mediafile/mediafile_list.html b/openslides/mediafile/templates/mediafile/mediafile_list.html
index 5a39d5ae5..3741646eb 100644
--- a/openslides/mediafile/templates/mediafile/mediafile_list.html
+++ b/openslides/mediafile/templates/mediafile/mediafile_list.html
@@ -30,12 +30,12 @@
             <td>{{ mediafile.filetype }}</td>
             <td>{{ mediafile.get_filesize }}</td>
             <td>{{ mediafile.timestamp }}</td>
-            <td><a href="{% model_url mediafile.uploader 'view' %}">{{ mediafile.uploader }}</a></td>
+            <td><a href="{{ mediafile.uploader|absolute_url }}">{{ mediafile.uploader }}</a></td>
             {% if perms.mediafile.can_manage %}
             <td>
                 <span style="width: 1px; white-space: nowrap;">
-                    <a href="{% model_url mediafile 'update' %}" rel="tooltip" data-original-title="{% trans 'Edit' %}" class="btn btn-mini"><i class="icon-pencil"></i></a>
-                    <a href="{% model_url mediafile 'delete' %}" rel="tooltip" data-original-title="{% trans 'Delete' %}" class="btn btn-mini"><i class="icon-remove"></i></a>
+                    <a href="{{ mediafile|absolute_url:'update' }}" rel="tooltip" data-original-title="{% trans 'Edit' %}" class="btn btn-mini"><i class="icon-pencil"></i></a>
+                    <a href="{{ mediafile|absolute_url:'delete' }}" rel="tooltip" data-original-title="{% trans 'Delete' %}" class="btn btn-mini"><i class="icon-remove"></i></a>
                 </span>
             </td>
             {% endif %}
diff --git a/openslides/motion/models.py b/openslides/motion/models.py
index 62f5491ec..053b43c49 100644
--- a/openslides/motion/models.py
+++ b/openslides/motion/models.py
@@ -29,7 +29,6 @@ from openslides.config.api import config
 from openslides.poll.models import (
     BaseOption, BasePoll, CountVotesCast, CountInvalid, BaseVote)
 from openslides.participant.models import User
-from openslides.projector.api import register_slidemodel
 from openslides.projector.models import SlideMixin
 from openslides.agenda.models import Item
 
@@ -43,9 +42,9 @@ class Motion(SlideMixin, models.Model):
     This class is the main entry point to all other classes related to a motion.
     """
 
-    prefix = ugettext_noop('motion')
+    slide_callback_name = 'motion'
     """
-    Prefix for the slide system.
+    Name of the callback for the slide-system.
     """
 
     active_version = models.ForeignKey('MotionVersion', null=True,
@@ -193,6 +192,7 @@ class Motion(SlideMixin, models.Model):
             return reverse('motion_edit', args=[str(self.id)])
         if link == 'delete':
             return reverse('motion_delete', args=[str(self.id)])
+        return super(Motion, self).get_absolute_url(link)
 
     def version_data_changed(self, version):
         """
@@ -464,16 +464,6 @@ class Motion(SlideMixin, models.Model):
                          Workflow.objects.get(pk=config['motion_workflow']).state_set.all()[0])
         self.set_state(new_state)
 
-    def slide(self):
-        """
-        Return the slide dict.
-        """
-        data = super(Motion, self).slide()
-        data['motion'] = self
-        data['title'] = self.title
-        data['template'] = 'projector/Motion.html'
-        return data
-
     def get_agenda_title(self):
         """
         Return a title for the agenda.
diff --git a/openslides/motion/slides.py b/openslides/motion/slides.py
index 6b65f2567..13b05c9a0 100644
--- a/openslides/motion/slides.py
+++ b/openslides/motion/slides.py
@@ -10,7 +10,26 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
-from openslides.projector.api import register_slidemodel
+from django.template.loader import render_to_string
+
+from openslides.projector.api import register_slide
 from .models import Motion
 
-register_slidemodel(Motion)
+
+def motion_slide(**kwargs):
+    """
+    Slide for the motion app.
+    """
+    motion_pk = kwargs.get('pk', None)
+    try:
+        motion = Motion.objects.get(pk=motion_pk)
+    except Motion.DoesNotExist:
+        return ''
+
+    context = {
+        'motion': motion,
+        'title': motion.title}
+
+    return render_to_string('motion/slide.html', context)
+
+register_slide(Motion.slide_callback_name, motion_slide)
diff --git a/openslides/motion/templates/motion/motion_detail.html b/openslides/motion/templates/motion/motion_detail.html
index affa58954..01ae8fe3f 100644
--- a/openslides/motion/templates/motion/motion_detail.html
+++ b/openslides/motion/templates/motion/motion_detail.html
@@ -42,12 +42,12 @@
             <ul class="dropdown-menu pull-right">
                 <!-- edit -->
                 {% if allowed_actions.edit %}
-                     <li><a href="{% model_url motion 'edit' %}"><i class="icon-pencil"></i> {% trans 'Edit motion' %}</a></li>
+                     <li><a href="{{ motion|absolute_url:'edit' }}"><i class="icon-pencil"></i> {% trans 'Edit motion' %}</a></li>
                 {% endif %}
                 {% if perms.motion.can_manage_motion %}
                     <!-- delete -->
                     {% if allowed_actions.delete %}
-                        <li><a href="{% model_url motion 'delete' %}"><i class="icon-remove"></i> {% trans 'Delete motion' %}</a></li>
+                        <li><a href="{{ motion|absolute_url:'delete' }}"><i class="icon-remove"></i> {% trans 'Delete motion' %}</a></li>
                     {% endif %}
                 {% endif %}
                 <!-- create agenda item -->
@@ -68,14 +68,14 @@
             <p><span class="label label-warning">
                 <i class="icon-warning-sign icon-white"></i> {% trans "This is not the newest version." %}
             </span>
-            <a href="{% model_url last_version %}" class="btn btn-small">{% trans "Go to the newest version" %}
+            <a href="{{ last_version|absolute_url }}" class="btn btn-small">{% trans "Go to the newest version" %}
             (# {{ last_version.version_number }})</a></p>
         {% endif %}
         {% if version.version_number != active_version.version_number %}
             <p><span class="label label-warning">
                 <i class="icon-warning-sign icon-white"></i> {% trans "This version is not authorized." %}
             </span>
-            <a href="{% model_url active_version %}" class="btn btn-small">{% trans "Go to the authorized version" %}
+            <a href="{{ active_version|absolute_url }}" class="btn btn-small">{% trans "Go to the authorized version" %}
             (# {{ active_version.version_number }})</a></p>
         {% endif %}
     {% endwith %}
@@ -123,11 +123,11 @@
                         <input type="radio" value="{{ version.version_number }}" name="rev2">
                     </td>
                     <td>
-                        <a href="{% model_url version %}" title="{% trans 'Show' %}" class="btn btn-mini">
+                        <a href="{{ version|absolute_url }}" title="{% trans 'Show' %}" class="btn btn-mini">
                             <i class="icon-search"></i>
                         </a>
                         {% if version != motion.active_version %}
-                            <a href="{% model_url version 'delete' %}" title="{% trans 'Delete' %}" class="btn btn-mini">
+                            <a href="{{ version|absolute_url:'delete' }}" title="{% trans 'Delete' %}" class="btn btn-mini">
                                 <i class="icon-remove"></i>
                             </a>
                         {% endif %}
@@ -166,7 +166,7 @@
         <!-- Submitter -->
         <h5>{% trans "Submitter" %}:</h5>
         {% for submitter in motion.submitter.all %}
-            <a href="{% model_url submitter.person 'view' %}">{{ submitter }}</a>{% if not forloop.last %}, {% endif %}
+            <a href="{{ submitter.person|absolute_url }}">{{ submitter }}</a>{% if not forloop.last %}, {% endif %}
         {% endfor %}
 
         <!-- Supporters -->
@@ -177,7 +177,7 @@
             {% else %}
                 <ol>
                 {% for supporter in motion.supporter.all %}
-                    <li><a href="{% model_url supporter.person 'view' %}">{{ supporter }}</a></li>
+                    <li><a href="{{ supporter.person|absolute_url }}">{{ supporter }}</a></li>
                 {% endfor %}
                 </ol>
             {% endif %}
@@ -196,8 +196,8 @@
             {% if perms.motion.can_manage_motion or poll.has_votes %}
                 <li><b>{{ poll.poll_number|ordinal|safe }} {% trans "vote" %}</b>
                     {% if perms.motion.can_manage_motion %}
-                        <a class="btn btn-mini" href="{% model_url poll 'edit' %}" title="{% trans 'Edit Vote' %}"><i class="icon-pencil"></i></a>
-                        <a class="btn btn-mini" href="{% model_url poll 'delete' %}" title="{% trans 'Delete Vote' %}"><i class="icon-remove"></i></a>
+                        <a class="btn btn-mini" href="{{ poll|absolute_url:'edit' }}" title="{% trans 'Edit Vote' %}"><i class="icon-pencil"></i></a>
+                        <a class="btn btn-mini" href="{{ poll|absolute_url:'delete' }}" title="{% trans 'Delete Vote' %}"><i class="icon-remove"></i></a>
                     {% endif %}
                     <br>
                     {% if poll.has_votes %}
diff --git a/openslides/motion/templates/motion/slide.html b/openslides/motion/templates/motion/slide.html
new file mode 100644
index 000000000..f0fef440d
--- /dev/null
+++ b/openslides/motion/templates/motion/slide.html
@@ -0,0 +1,69 @@
+{% load i18n %}
+{% load staticfiles %}
+
+<div id="sidebar">
+<div class="box">
+    <!-- Status -->
+    <p><b>{% trans "Status" %}:</b><br>
+        {% trans motion.state.name %}
+    </p>
+
+    <!-- poll results -->
+    {% with motion.polls.all as polls %}
+    {% if polls.exists and polls.0.has_votes %}
+    <p><b>{% trans "Poll result" %}:</b>
+        {% for poll in polls %}
+            {% if poll.has_votes %}
+                {% if polls|length > 1 %}
+                    <p>{{ forloop.counter }}. {% trans "Vote" %}:</p>
+                {% endif %}
+                {% with poll.get_options.0 as option %}
+                <div class="results">
+                    <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Yes' %}"> {{ option.Yes }} <br>
+                    <img src="{% static 'img/voting-no.png' %}" title="{% trans 'No' %}"> {{ option.No }} <br>
+                    <img src="{% static 'img/voting-abstention.png' %}" title="{% trans 'Abstention' %}"> {{ option.Abstain }}<br>
+                    <img src="{% static 'img/voting-invalid.png' %}" title="{% trans 'Invalid' %}"> {{ poll.print_votesinvalid }}<br>
+                    <hr>
+                    <img src="{% static 'img/voting-total.png' %}" title="{% trans 'Votes cast' %}"> {{ poll.print_votescast }}
+                </div>
+                {% endwith %}
+            {% else %}
+                {% if poll|length  == 1 %}
+                <i>{% trans "No poll results available." %}</i>
+                {% endif %}
+            {% endif %}
+        {% endfor %}
+    </p>
+    {% endif %}
+    {% endwith %}
+
+    <!-- Submitter -->
+    <p><b>{% trans "Submitter" %}:</b><br>
+        {% for submitter in motion.submitter.all %}
+            {{ submitter.person }}{% if not forloop.last %},<br> {% endif %}
+        {% endfor %}
+    </p>
+</div>
+</div>
+
+<h1>
+{% if motion.identifier %}
+    {% trans "Motion" %} {{ motion.identifier }}
+{% else %}
+    {% trans "Motion" %} [---]
+{% endif %}
+<small>
+    {% if motion.last_version.version_number > 1 %}({% trans 'Version' %} {{ motion.active_version.version_number }}){% endif %}
+</small>
+</h1>
+<b>{{ motion.active_version.title }}</b>
+<hr>
+
+<p>
+<div class="text">{{ motion.active_version.text|safe }}</div>
+{% if motion.active_version.reason %}
+    <br>
+    <div class="reason"><p><b>{% trans "Reason" %}:</b></p>
+    {{ motion.active_version.reason|safe }}</div>
+{% endif %}
+</p>
diff --git a/openslides/motion/templates/motion/widget.html b/openslides/motion/templates/motion/widget.html
index b26ca3e97..72996eed6 100644
--- a/openslides/motion/templates/motion/widget.html
+++ b/openslides/motion/templates/motion/widget.html
@@ -3,17 +3,17 @@
 
 <ul style="line-height: 180%">
 {% for motion in motions %}
-    <li class="{% if motion.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' motion.sid  %}" class="activate_link btn {% if motion.active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
-            <i class="icon-facetime-video {% if motion.active %}icon-white{% endif %}"></i>
+    <li class="{% if motion.is_active_slide %}activeline{% endif %}">
+        <a href="{{ motion|absolute_url:'projector' }}" class="activate_link btn {% if motion.is_active_slide %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
+            <i class="icon-facetime-video {% if motion.is_active_slide %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% model_url motion 'edit' %}" title="{% trans 'Edit' %}" class="btn btn-mini right">
+        <a href="{{ motion|absolute_url:'edit' }}" title="{% trans 'Edit' %}" class="btn btn-mini right">
             <i class="icon-pencil"></i>
         </a>
-        <a href="{% url 'projctor_preview_slide' motion.sid %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
+        <a href="{{ motion|absolute_url:'projector_preview' }}" title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
-        <a href="{% model_url motion %}">
+        <a href="{{ motion|absolute_url }}">
             {{ motion.identifier|add:' | '|default:'' }}
             {{ motion }}
         </a>
diff --git a/openslides/motion/templates/projector/Motion.html b/openslides/motion/templates/projector/Motion.html
deleted file mode 100644
index ce27266dc..000000000
--- a/openslides/motion/templates/projector/Motion.html
+++ /dev/null
@@ -1,76 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-{% load staticfiles %}
-
-{% block title %}{{ block.super }} - {% trans "Motion" %} {{ motion.identifier }}{% endblock %}
-{% block content %}
-    <div id="sidebar">
-    <div class="box">
-        <!-- Status -->
-        <p><b>{% trans "Status" %}:</b><br>
-            {% trans motion.state.name %}
-        </p>
-
-        <!-- poll results -->
-        {% with motion.polls.all as polls %}
-        {% if polls.exists and polls.0.has_votes %}
-        <p><b>{% trans "Poll result" %}:</b>
-            {% for poll in polls %}
-                {% if poll.has_votes %}
-                    {% if polls|length > 1 %}
-                        <p>{{forloop.counter}}. {% trans "Vote" %}:</p>
-                    {% endif %}
-                    {% with poll.get_options.0 as option %}
-                    <div class="results">
-                        <img src="{% static 'img/voting-yes.png' %}" title="{% trans 'Yes' %}"> {{ option.Yes }} <br>
-                        <img src="{% static 'img/voting-no.png' %}" title="{% trans 'No' %}"> {{ option.No }} <br>
-                        <img src="{% static 'img/voting-abstention.png' %}" title="{% trans 'Abstention' %}"> {{ option.Abstain }}<br>
-                        <img src="{% static 'img/voting-invalid.png' %}" title="{% trans 'Invalid' %}"> {{ poll.print_votesinvalid }}<br>
-                        <hr>
-                        <img src="{% static 'img/voting-total.png' %}" title="{% trans 'Votes cast' %}"> {{ poll.print_votescast }}
-                    </div>
-                    {% endwith %}
-                {% else %}
-                    {% if poll|length  == 1 %}
-                    <i>{% trans "No poll results available." %}</i>
-                    {% endif %}
-                {% endif %}
-            {% endfor %}
-        </p>
-        {% endif %}
-        {% endwith %}
-
-        <!-- Submitter -->
-        <p><b>{% trans "Submitter" %}:</b><br>
-            {% for submitter in motion.submitter.all %}
-                {{ submitter.person }}{% if not forloop.last %},<br> {% endif %}
-            {% endfor %}
-        </p>
-    </div>
-    </div>
-
-    <h1>
-    {% if motion.identifier %}
-        {% trans "Motion" %} {{ motion.identifier }}
-    {% else %}
-        {% trans "Motion" %} [---]
-    {% endif %}
-    <small>
-        {% if motion.last_version.version_number > 1 %}({% trans 'Version' %} {{ motion.active_version.version_number }}){% endif %}
-    </small>
-    </h1>
-    <b>{{ motion.active_version.title }}</b>
-    <hr>
-{% endblock %}
-
-{% block scrollcontent %}
-    <p>
-    <div class="text">{{ motion.active_version.text|safe }}</div>
-    {% if motion.active_version.reason %}
-        <br>
-        <div class="reason"><p><b>{% trans "Reason" %}:</b></p>
-        {{ motion.active_version.reason|safe }}</div>
-    {% endif %}
-    </p>
-{% endblock %}
diff --git a/openslides/motion/views.py b/openslides/motion/views.py
index 26536f65d..260445d37 100644
--- a/openslides/motion/views.py
+++ b/openslides/motion/views.py
@@ -30,7 +30,7 @@ from openslides.utils.template import Tab
 from openslides.utils.utils import html_strong, htmldiff
 from openslides.poll.views import PollFormView
 from openslides.projector.api import get_active_slide
-from openslides.projector.projector import Widget, SLIDE
+from openslides.projector.projector import Widget
 from openslides.config.api import config
 from openslides.agenda.views import CreateRelatedAgendaItemView as _CreateRelatedAgendaItemView
 
diff --git a/openslides/participant/__init__.py b/openslides/participant/__init__.py
index ff2de0a29..d37cc3240 100644
--- a/openslides/participant/__init__.py
+++ b/openslides/participant/__init__.py
@@ -13,6 +13,7 @@
 from django.utils.translation import ugettext_noop
 
 from . import signals
+from . import slides
 
 
 NAME = ugettext_noop('Participant')
diff --git a/openslides/participant/models.py b/openslides/participant/models.py
index 4f69047ed..931f0f5ca 100644
--- a/openslides/participant/models.py
+++ b/openslides/participant/models.py
@@ -10,6 +10,7 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
+from django.core.urlresolvers import reverse
 from django.contrib.auth.models import User as DjangoUser, Group as DjangoGroup, Permission
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
@@ -20,13 +21,13 @@ from django.utils.translation import ugettext_lazy, ugettext_noop
 from openslides.utils.person import PersonMixin, Person
 from openslides.utils.person.signals import receive_persons
 from openslides.config.api import config
-from openslides.projector.api import register_slidemodel
-from openslides.projector.projector import SlideMixin
+from openslides.projector.models import SlideMixin
 
 
-class User(PersonMixin, Person, SlideMixin, DjangoUser):
-    prefix = 'user'  # This is for the slides
+class User(SlideMixin, PersonMixin, Person, DjangoUser):
+    slide_callback_name = 'user'
     person_prefix = 'user'
+
     GENDER_CHOICES = (
         ('male', ugettext_lazy('Male')),
         ('female', ugettext_lazy('Female')),
@@ -55,6 +56,30 @@ class User(PersonMixin, Person, SlideMixin, DjangoUser):
         max_length=100, blank=True, default='',
         verbose_name=ugettext_lazy("Default password"))
 
+    class Meta:
+        permissions = (
+            ('can_see_participant', ugettext_noop('Can see participants')),
+            ('can_manage_participant', ugettext_noop('Can manage participants')),
+        )
+        ordering = ('last_name',)
+
+    def __unicode__(self):
+        if self.name_suffix:
+            return u"%s (%s)" % (self.clean_name, self.name_suffix)
+        return u"%s" % self.clean_name
+
+    def get_absolute_url(self, link='detail'):
+        """
+        Return the URL to the user.
+        """
+        if link == 'detail' or link == 'view':
+            return reverse('user_view', args=[str(self.id)])
+        if link == 'edit':
+            return reverse('user_edit', args=[str(self.id)])
+        if link == 'delete':
+            return reverse('user_delete', args=[str(self.id)])
+        return super(User, self).get_absolute_url(link)
+
     @property
     def clean_name(self):
         if self.title:
@@ -86,50 +111,9 @@ class User(PersonMixin, Person, SlideMixin, DjangoUser):
             return self.first_name.lower()
         return self.last_name.lower()
 
-    @models.permalink
-    def get_absolute_url(self, link='detail'):
-        """
-        Return the URL to this user.
 
-        link can be:
-        * detail
-        * edit
-        * delete
-        """
-        if link == 'detail' or link == 'view':
-            return ('user_view', [str(self.id)])
-        if link == 'edit':
-            return ('user_edit', [str(self.id)])
-        if link == 'delete':
-            return ('user_delete', [str(self.id)])
-
-    def __unicode__(self):
-        if self.name_suffix:
-            return u"%s (%s)" % (self.clean_name, self.name_suffix)
-        return u"%s" % self.clean_name
-
-    class Meta:
-        # Rename permissions
-        permissions = (
-            ('can_see_participant', ugettext_noop('Can see participants')),  # TODO: Add plural s to the codestring
-            ('can_manage_participant', ugettext_noop('Can manage participants')),  # TODO: Add plural s to the codestring
-        )
-        ordering = ('last_name',)
-
-    def slide(self):
-        """
-        Returns a map with the data for the slides.
-        """
-        return {
-            'shown_user': self,
-            'title': self.clean_name,
-            'template': 'projector/UserSlide.html'}
-
-register_slidemodel(User)
-
-
-class Group(PersonMixin, Person, SlideMixin, DjangoGroup):
-    prefix = 'group'  # This is for the slides
+class Group(SlideMixin, PersonMixin, Person, DjangoGroup):
+    slide_callback_name = 'group'
     person_prefix = 'group'
 
     django_group = models.OneToOneField(DjangoGroup, editable=False, parent_link=True)
@@ -138,39 +122,23 @@ class Group(PersonMixin, Person, SlideMixin, DjangoGroup):
         help_text=ugettext_lazy('For example as submitter of a motion.'))
     description = models.TextField(blank=True, verbose_name=ugettext_lazy("Description"))
 
-    @models.permalink
-    def get_absolute_url(self, link='detail'):
-        """
-        Return the URL to this user group.
-
-        link can be:
-        * view
-        * edit
-        * delete
-        """
-        if link == 'detail' or link == 'view':
-            return ('user_group_view', [str(self.id)])
-        if link == 'edit':
-            return ('user_group_edit', [str(self.id)])
-        if link == 'delete':
-            return ('user_group_delete', [str(self.id)])
+    class Meta:
+        ordering = ('name',)
 
     def __unicode__(self):
         return unicode(self.name)
 
-    class Meta:
-        ordering = ('name',)
-
-    def slide(self):
+    def get_absolute_url(self, link='detail'):
         """
-        Returns a map with the data for the slides.
+        Return the URL to the user group.
         """
-        return {
-            'group': self,
-            'title': self.name,
-            'template': 'projector/GroupSlide.html'}
-
-register_slidemodel(Group)
+        if link == 'detail' or link == 'view':
+            return reverse('user_group_view', args=[str(self.id)])
+        if link == 'update' or link == 'edit':
+            return reverse('user_group_edit', args=[str(self.id)])
+        if link == 'delete':
+            return reverse('user_group_delete', args=[str(self.id)])
+        return super(Group, self).get_absolute_url(link)
 
 
 class UsersAndGroupsToPersons(object):
diff --git a/openslides/participant/slides.py b/openslides/participant/slides.py
new file mode 100644
index 000000000..58ff0f91b
--- /dev/null
+++ b/openslides/participant/slides.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+    openslides.motion.slides
+    ~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Defines the slides for the User app.
+
+    :copyright: (c) 2011–2013 by the OpenSlides team, see AUTHORS.
+    :license: GNU GPL, see LICENSE for more details.
+"""
+
+from django.template.loader import render_to_string
+
+from openslides.projector.api import register_slide
+from .models import User, Group
+
+
+def user_slide(**kwargs):
+    """
+    Slide for the user model.
+    """
+    user_pk = kwargs.get('pk', None)
+    try:
+        user = User.objects.get(pk=user_pk)
+    except User.DoesNotExist:
+        return ''
+
+    context = {'shown_user': user}
+    return render_to_string('participant/user_slide.html', context)
+
+register_slide(User.slide_callback_name, user_slide)
+
+
+def group_slide(**kwargs):
+    """
+    Slide for the group model.
+    """
+    group_pk = kwargs.get('pk', None)
+    try:
+        group = Group.objects.get(pk=group_pk)
+    except Group.DoesNotExist:
+        return ''
+
+    context = {'group': group}
+    return render_to_string('participant/group_slide.html', context)
+
+register_slide(Group.slide_callback_name, group_slide)
diff --git a/openslides/participant/templates/participant/group_detail.html b/openslides/participant/templates/participant/group_detail.html
index e9811ecf1..5b6fc9230 100644
--- a/openslides/participant/templates/participant/group_detail.html
+++ b/openslides/participant/templates/participant/group_detail.html
@@ -38,7 +38,7 @@
 
 <ol>
 {% for member in group_members %}
-    <li><a href="{% model_url member 'view' %}">{{ member }}</a></li>
+    <li><a href="{{ member|absolute_url }}">{{ member }}</a></li>
 {% empty %}
     <p>{% trans "No members available." %}</p>
 {% endfor %}
diff --git a/openslides/participant/templates/participant/group_overview.html b/openslides/participant/templates/participant/group_overview.html
index 70b26beaf..67f2b2e3a 100644
--- a/openslides/participant/templates/participant/group_overview.html
+++ b/openslides/participant/templates/participant/group_overview.html
@@ -40,7 +40,7 @@
             {% endif %}
             </td>
             <td>
-                <a href="{% model_url group 'view' %}">{% trans group.name %}</a>
+                <a href="{{ group|absolute_url }}">{% trans group.name %}</a>
             </td>
             <td>
                 <span style="width: 1px; white-space: nowrap;">
diff --git a/openslides/participant/templates/participant/group_slide.html b/openslides/participant/templates/participant/group_slide.html
new file mode 100644
index 000000000..3b1e271bc
--- /dev/null
+++ b/openslides/participant/templates/participant/group_slide.html
@@ -0,0 +1,7 @@
+{% load i18n %}
+
+<div class="item_fullscreen">{% trans group.name %}
+    <span>
+    <p><i>{{ group.user_set.all.count }} {% trans "participants" %}</i></p>
+    </span>
+</div>
diff --git a/openslides/participant/templates/participant/group_widget.html b/openslides/participant/templates/participant/group_widget.html
index 8f418dc6f..b5ddcd108 100644
--- a/openslides/participant/templates/participant/group_widget.html
+++ b/openslides/participant/templates/participant/group_widget.html
@@ -3,17 +3,17 @@
 
 <ul style="line-height: 180%">
 {% for group in groups %}
-    <li class="{% if group.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' group.sid  %}" class="activate_link btn {% if group.active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
-            <i class="icon-facetime-video {% if group.active %}icon-white{% endif %}"></i>
+    <li class="{% if group.is_active_slide %}activeline{% endif %}">
+        <a href="{{ group|absolute_url:'projector' }}" class="activate_link btn {% if group.is_active_slide %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
+            <i class="icon-facetime-video {% if group.is_active_slide %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% model_url group 'edit' %}" title="{% trans 'Edit' %}" class="btn btn-mini right">
+        <a href="{{ group|absolute_url:'update' }}" title="{% trans 'Edit' %}" class="btn btn-mini right">
             <i class="icon-pencil"></i>
         </a>
-        <a href="{% url 'projctor_preview_slide' group.sid %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
+        <a href="{{ group|absolute_url:'projector_preview' }}" title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
-        <a href="{% model_url group 'view' %}">{% trans group.name %}</a>
+        <a href="{{ group|absolute_url }}">{% trans group.name %}</a>
     </li>
 {% endfor %}
 </ul>
diff --git a/openslides/participant/templates/participant/user_slide.html b/openslides/participant/templates/participant/user_slide.html
new file mode 100644
index 000000000..683ad272e
--- /dev/null
+++ b/openslides/participant/templates/participant/user_slide.html
@@ -0,0 +1,15 @@
+{% load i18n %}
+<div class="item_fullscreen">{{ shown_user }}
+    <span>
+    {% if shown_user.committee %}
+        <p>{{ shown_user.committee }}</p>
+    {% endif %}
+    <p>
+        {% if shown_user.groups.all %}
+            {% for group in shown_user.groups.all %}
+                {% trans group.name %}{% if not forloop.last %}, {% endif %}
+            {% endfor %}
+        {% endif %}
+    </p>
+    </span>
+</div>
diff --git a/openslides/participant/templates/participant/user_widget.html b/openslides/participant/templates/participant/user_widget.html
index 59df7c69f..16a9e25ff 100644
--- a/openslides/participant/templates/participant/user_widget.html
+++ b/openslides/participant/templates/participant/user_widget.html
@@ -1,19 +1,18 @@
 {% load i18n %}
 {% load tags %}
-
 <ul style="line-height: 180%">
 {% for user in users %}
-    <li class="{% if user.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' user.sid  %}" class="activate_link btn {% if user.active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
-            <i class="icon-facetime-video {% if user.active %}icon-white{% endif %}"></i>
+    <li class="{% if user.is_active_slide %}activeline{% endif %}">
+        <a href="{{ user|absolute_url:'projector' }}" class="activate_link btn {% if user.is_active_slide %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
+            <i class="icon-facetime-video {% if user.is_active_slide %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% model_url user 'edit' %}" title="{% trans 'Edit' %}" class="btn btn-mini right">
+        <a href="{{ user|absolute_url:'edit' }}" title="{% trans 'Edit' %}" class="btn btn-mini right">
             <i class="icon-pencil"></i>
         </a>
-        <a href="{% url 'projctor_preview_slide' user.sid %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
+        <a href="{{ user|absolute_url:'projector_preview' }}" title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
-        <a href="{% model_url user 'view' %}">{{ user }}</a>
+        <a href="{{ user|absolute_url }}">{{ user }}</a>
     </li>
 {% empty %}
     <li>{% trans 'No participants available.' %}</li>
diff --git a/openslides/participant/templates/projector/GroupSlide.html b/openslides/participant/templates/projector/GroupSlide.html
deleted file mode 100644
index 3cc4afd13..000000000
--- a/openslides/participant/templates/projector/GroupSlide.html
+++ /dev/null
@@ -1,13 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-
-{% block title %}{{ title }}{% endblock %}
-
-{% block content %}
-    <div class="item_fullscreen">{% trans group.name %}
-        <span>
-        <p><i>{{ group.user_set.all.count }} {% trans "participants" %}</i></p>
-        </span>
-    </div>
-{% endblock %}
diff --git a/openslides/participant/templates/projector/UserSlide.html b/openslides/participant/templates/projector/UserSlide.html
deleted file mode 100644
index dc78e577d..000000000
--- a/openslides/participant/templates/projector/UserSlide.html
+++ /dev/null
@@ -1,22 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-
-{% block title %}{{ title }}{% endblock %}
-
-{% block content %}
-    <div class="item_fullscreen">{{ shown_user }}
-        <span>
-        {% if shown_user.committee %}
-            <p>{{ shown_user.committee }}</p>
-        {% endif %}
-        <p>
-            {% if shown_user.groups.all %}
-                {% for group in shown_user.groups.all %}
-                    {% trans group.name %}{% if not forloop.last %}, {% endif %}
-                {% endfor %}
-            {% endif %}
-        </p>
-        </span>
-    </div>
-{% endblock %}
diff --git a/openslides/participant/views.py b/openslides/participant/views.py
index f1151dc2e..2d0b04801 100644
--- a/openslides/participant/views.py
+++ b/openslides/participant/views.py
@@ -43,11 +43,12 @@ from openslides.utils.views import (
     RedirectView, SingleObjectMixin, ListView, QuestionMixin, DetailView)
 from openslides.config.api import config
 from openslides.projector.projector import Widget
-from openslides.participant.api import gen_username, gen_password, import_users
-from openslides.participant.forms import (
+
+from .api import gen_username, gen_password, import_users
+from .forms import (
     UserCreateForm, UserUpdateForm, UsersettingsForm,
     UserImportForm, GroupForm)
-from openslides.participant.models import User, Group, get_protected_perm
+from .models import User, Group, get_protected_perm
 
 
 class UserOverview(ListView):
diff --git a/openslides/projector/__init__.py b/openslides/projector/__init__.py
index 39748e2c6..47bd8c0e5 100644
--- a/openslides/projector/__init__.py
+++ b/openslides/projector/__init__.py
@@ -10,4 +10,4 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
-from . import signals
+from . import signals, slides
diff --git a/openslides/projector/api.py b/openslides/projector/api.py
index 68299d82b..a0937a54f 100644
--- a/openslides/projector/api.py
+++ b/openslides/projector/api.py
@@ -10,114 +10,146 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
+import json
+
 from django.conf import settings
 from django.core.cache import cache
 from django.utils.datastructures import SortedDict
 from django.utils.importlib import import_module
+from django.template.loader import render_to_string
 
 from openslides.config.api import config
-from openslides.projector.projector import SLIDE, Slide
+from openslides.utils.tornado_webserver import ProjectorSocketHandler
+from .signals import projector_overlays
 
 
-def split_sid(sid):
+slide_callback = {}
+"""
+A dictonary where the key is the name of a slide, and the value is a
+callable object which returns the html code for a slide.
+"""
+
+
+def update_projector():
     """
-    Slit a SID in the model-part and in the model-id
+    Sends the data to the clients, who listen to the projector.
     """
+    # TODO: only send necessary html
+    ProjectorSocketHandler.send_updates({'content': get_projector_content()})
+
+
+def update_projector_overlay(overlay):
+    """
+    Update one overlay on the projector.
+
+    Checks if the overlay is activated and updates it in this case.
+
+    'overlay' has to be an overlay object, the name of a ovleray or None.
+
+    If 'overlay' is None, then all overlays are updated.
+    """
+    if isinstance(overlay, basestring):
+        overlay = get_overlays()[overlay]
+    if overlay is None:
+        overlays = [overlay for overlay in get_overlays().values()]
+    else:
+        overlays = [overlay]
+
+    overlay_dict = {}
+    for overlay in overlays:
+        if overlay.is_active():
+            overlay_dict[overlay.name] = {
+                'html': overlay.get_projector_html(),
+                'javascript': overlay.get_javascript()}
+        else:
+            overlay_dict[overlay.name] = None
+    ProjectorSocketHandler.send_updates({'overlays': overlay_dict})
+
+
+def get_projector_content(slide_dict=None):
+    """
+    Returns the HTML-Content block of the projector.
+    """
+    if slide_dict is None:
+        slide_dict = config['projector_active_slide'].copy()
+    callback = slide_dict.pop('callback', None)
+
     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):
-    """
-    Return the Slide for an given sid.
-    If element== False, return the slide-dict,
-    else, return the object.
-    """
-    try:
-        key, id = split_sid(sid)
-    except TypeError:
-        return None
-
-    if id is not None:
-        try:
-            object = SLIDE[key].model.objects.get(pk=id)
-        except SLIDE[key].model.DoesNotExist:
-            return None
-        if element:
-            return object
-        return object.slide()
-    try:
-        return SLIDE[key].func()
+        return slide_callback[callback](**slide_dict)
     except KeyError:
-        return None
+        return default_slide()
 
 
-def get_active_slide(only_sid=False):
+def default_slide():
     """
-    Returns the active slide. If no slide is active, or it can not find an Item,
-    return None
-
-    if only_sid is True, returns only the id of this item. Returns None if not
-    Item is active.
+    Returns the HTML Code for the default slide.
     """
-    sid = config["presentation"]
-
-    if only_sid:
-        return sid
-    return get_slide_from_sid(sid)
+    return render_to_string('projector/default_slide.html')
 
 
-def set_active_slide(sid, argument=None):
+def get_overlays():
+    """
+    Returns all overlay objects.
+
+    The returned value is a dictonary with the name of the overlay as key, and
+    the overlay object as value.
+    """
+    overlays = {}
+    for receiver, overlay in projector_overlays.send(sender='get_overlays'):
+        overlays[overlay.name] = overlay
+    return overlays
+
+
+def get_projector_overlays():
+    """
+    Returns the HTML code for all active overlays.
+    """
+    overlays = [{'name': key, 'html': overlay.get_projector_html()}
+                for key, overlay in get_overlays().items()
+                if overlay.is_active()]
+    return render_to_string('projector/all_overlays.html', {'overlays': overlays})
+
+
+def get_projector_overlays_js():
+    """
+    Returns JS-Code for the overlays.
+
+    The retuned value is a list of json objects.
+    """
+    js = []
+    for key, overlay in get_overlays().items():
+        if overlay.is_active():
+            overlay_js = overlay.get_javascript()
+            if overlay_js:
+                js.append(json.dumps(overlay_js))
+    return js
+
+
+def register_slide(name, callback):
+    """
+    Register a function as slide callback.
+    """
+    slide_callback[name] = callback
+
+
+def set_active_slide(callback, kwargs={}):
     """
     Set the active Slide.
+
+    callback: The name of the slide callback.
+    kwargs: Keyword arguments for the slide callback.
     """
-    config["presentation"] = sid
-    config['presentation_argument'] = argument
-    clear_projector_cache()
+    kwargs.update(callback=callback)
+    config['projector_active_slide'] = kwargs
+    update_projector()
+    update_projector_overlay(None)
 
 
-def clear_projector_cache():
-    cache.delete('projector_content')
-    cache.delete('projector_scrollcontent')
-    cache.delete('projector_data')
-
-
-def register_slidemodel(model, model_name=None, control_template=None, weight=0):
+def get_active_slide():
     """
-    Register a Model as a slide.
+    Returns the dictonary, witch defindes the active slide.
     """
-    # TODO: control_template should never be None
-    if model_name is None:
-        model_name = model.prefix
-
-    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=''):
-    """
-    Register a function for as a slide.
-    """
-    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,)
+    return config['projector_active_slide']
 
 
 def get_all_widgets(request, session=False):
@@ -135,9 +167,11 @@ def get_all_widgets(request, session=False):
         except ImportError:
             continue
         try:
-            module_widgets = mod.get_widgets(request)
+            mod_get_widgets = mod.get_widgets
         except AttributeError:
             continue
+        else:
+            module_widgets = mod_get_widgets(request)
         all_module_widgets.extend(module_widgets)
     all_module_widgets.sort(key=lambda widget: widget.default_weight)
     session_widgets = request.session.get('widgets', {})
diff --git a/openslides/projector/models.py b/openslides/projector/models.py
index 2dfcd538d..57d2a110f 100644
--- a/openslides/projector/models.py
+++ b/openslides/projector/models.py
@@ -13,34 +13,92 @@
 from django.db import models
 from django.dispatch import receiver
 from django.utils.translation import ugettext_lazy, ugettext_noop
+from django.core.exceptions import ImproperlyConfigured
+from django.core.urlresolvers import reverse
 
-from openslides.projector.api import register_slidemodel
-from openslides.projector.projector import SlideMixin
+from openslides.utils.utils import int_or_none
 
 
-class ProjectorSlide(models.Model, SlideMixin):
+class SlideMixin(object):
+    """
+    A Mixin for a Django-Model, for making the model a slide.
+    """
+
+    slide_callback_name = None
+    """
+    Name of the callback to render the model as slide.
+    """
+
+    def save(self, *args, **kwargs):
+        """
+        Updates the projector, if 'self' is the active slide.
+        """
+        from openslides.projector.api import update_projector
+        super(SlideMixin, self).save(*args, **kwargs)
+        if self.is_active_slide():
+            update_projector()
+
+    def delete(self, *args, **kwargs):
+        from openslides.projector.api import update_projector
+        super(SlideMixin, self).delete(*args, **kwargs)
+        if self.is_active_slide():
+            update_projector()
+
+    def get_slide_callback_name(self):
+        """
+        Returns the name of the slide callback, which is used to render the slide.
+        """
+        if self.slide_callback_name is None:
+            raise ImproperlyConfigured(
+                "SlideMixin requires either a definition of 'slide_callback_name'"
+                " or an implementation of 'get_slide_callback_name()'")
+        else:
+            return self.slide_callback_name
+
+    def get_absolute_url(self, link='projector'):
+        """
+        Return the url to activate the slide, if link == 'projector'
+        """
+        if link == 'projector':
+            url_name = 'projector_activate_slide'
+        elif link == 'projector_preview':
+            url_name = 'projector_preview'
+
+        if link in ('projector', 'projector_preview'):
+            return '%s?pk=%d' % (
+                reverse(url_name,
+                        args=[self.get_slide_callback_name()]),
+                self.pk)
+        return super(SlideMixin, self).get_absolute_url(link)
+
+    def is_active_slide(self):
+        """
+        Return True, if the the slide is the active slide.
+        """
+        from openslides.projector.api import get_active_slide
+        active_slide = get_active_slide()
+        pk = int_or_none(active_slide.get('pk', None))
+
+        return (active_slide['callback'] == self.get_slide_callback_name() and
+                self.pk == pk)
+
+
+class ProjectorSlide(SlideMixin, models.Model):
     """
     Model for Slides, only for the projector. Also called custom slides.
     """
-    prefix = 'ProjectorSlide'
+    slide_callback_name = 'projector_slide'
 
     title = models.CharField(max_length=256, verbose_name=ugettext_lazy("Title"))
     text = models.TextField(null=True, blank=True, verbose_name=ugettext_lazy("Text"))
     weight = models.IntegerField(default=0, verbose_name=ugettext_lazy("Weight"))
 
-    def slide(self):
-        return {
-            'slide': self,
-            'title': self.title,
-            'template': 'projector/ProjectorSlide.html',
-        }
-
-    @models.permalink
-    def get_absolute_url(self, link='edit'):
-        if link == 'edit':
-            return ('customslide_edit', [str(self.id)])
+    def get_absolute_url(self, link='update'):
+        if link == 'edit' or link == 'update':
+            return reverse('customslide_edit', args=[str(self.pk)])
         if link == 'delete':
-            return ('customslide_delete', [str(self.id)])
+            return reverse('customslide_delete', args=[str(self.pk)])
+        return super(ProjectorSlide, self).get_absolute_url(link)
 
     def __unicode__(self):
         return self.title
@@ -51,6 +109,3 @@ class ProjectorSlide(models.Model, SlideMixin):
             ('can_see_projector', ugettext_noop("Can see the projector")),
             ('can_see_dashboard', ugettext_noop("Can see the dashboard")),
         )
-
-
-register_slidemodel(ProjectorSlide, control_template='projector/control_customslide.html')
diff --git a/openslides/projector/projector.py b/openslides/projector/projector.py
index d87d74cf0..ede8e3f7e 100644
--- a/openslides/projector/projector.py
+++ b/openslides/projector/projector.py
@@ -20,97 +20,6 @@ from django.template import RequestContext
 from openslides.utils.exceptions import OpenSlidesError
 
 
-SLIDE = {}
-
-
-class SlideMixin(object):
-    """
-    A Mixin for a Django-Model, for making the model a slide.
-    """
-
-    def slide(self):
-        """
-        Return a map with all Data for the Slide.
-        """
-        return {
-            'slide': self,
-            'title': 'dummy-title',
-            'template': 'projector/default.html',
-        }
-
-    @property
-    def sid(self):
-        """
-        Return the sid from this Slide
-        """
-        return "%s-%d" % (self.prefix, self.id)
-
-    @property
-    def active(self):
-        """
-        Return True, if the the slide is the active slide.
-        """
-        if self.id is None:
-            return False
-        from openslides.projector.api import get_active_slide
-        return get_active_slide(only_sid=True) == self.sid
-
-    def set_active(self):
-        """
-        Appoint this item as the active slide.
-        """
-        from openslides.projector.api import set_active_slide
-        set_active_slide(self.sid)
-
-    def save(self, *args, **kwargs):
-        if self.active:
-            from api import clear_projector_cache
-            clear_projector_cache()
-        return super(SlideMixin, self).save(*args, **kwargs)
-
-
-class Slide(object):
-    """
-    Represents a Slide for the projector. Can be a modelinstanz, or a function.
-    """
-    def __init__(self, model_slide=False, func=None, model=None, category=None,
-                 key=None, model_name='', control_template='', weight=0, name=''):
-        """
-        model_slide: Boolean if the value is a Model.
-        func: The function to call. Only if modelslide is False.
-        model: The model. Only if modelslide is True.
-        model_name: The name shown for the model.
-        category: The category to show this Slide.
-        key: the key in the slide object to find itself.
-        """
-        self.model_slide = model_slide
-        self.func = func
-        self.model = model
-        self.model_name = model_name
-        self.category = category
-        self.key = key
-        self.control_template = control_template
-        self.weight = weight
-        self.name = name
-
-    @property
-    def active(self):
-        """
-        Return True if the Slide is active, else: False.
-        """
-        from api import get_active_slide
-        return get_active_slide(True) == self.key
-
-    def get_items(self):
-        """
-        If the Slide is a Slide from a Model, return all Objects.
-        """
-        try:
-            return self.model.objects.all()
-        except AttributeError:
-            return 'No Model'
-
-
 class Widget(object):
     """
     Class for a Widget for the Projector-Tab.
@@ -158,23 +67,52 @@ class Overlay(object):
     Represents an overlay which can be seen on the projector.
     """
 
-    def __init__(self, name, get_widget_html, get_projector_html):
+    def __init__(self, name, get_widget_html, get_projector_html,
+                 get_javascript=None, allways_active=False):
         self.name = name
         self.widget_html_callback = get_widget_html
         self.projector_html_callback = get_projector_html
+        self.javascript_callback = get_javascript
+        self.allways_active = allways_active
 
     def get_widget_html(self):
-        return self.widget_html_callback()
+        value = None
+        if self.widget_html_callback is not None:
+            value = self.widget_html_callback()
+        return value
 
     def get_projector_html(self):
-        try:
-            return self._projector_html
-        except AttributeError:
-            self._projector_html = self.projector_html_callback()
-            return self.get_projector_html()
+        return self.get_html_wrapper(self.projector_html_callback())
+
+    def get_javascript(self):
+        if self.javascript_callback is None:
+            value = {}
+        else:
+            value = self.javascript_callback()
+        return value
+
+    def get_html_wrapper(self, inner_html):
+        full_html = ''
+        if inner_html is not None:
+            full_html = '<div id="overlay_%s">%s</div>' % (self.name, inner_html)
+        return full_html
 
     def is_active(self):
-        return self.name in config['projector_active_overlays']
+        return self.allways_active or self.name in config['projector_active_overlays']
+
+    def set_active(self, active):
+        """
+        Publish or depublish the ovleray on the projector.
+
+        publish, if active is true,
+        depublish, if active is false.
+        """
+        active_overlays = set(config['projector_active_overlays'])
+        if active:
+            active_overlays.add(self.name)
+        else:
+            active_overlays.discard(self.name)
+        config['projector_active_overlays'] = list(active_overlays)
 
     def show_on_projector(self):
         return self.is_active() and self.get_projector_html() is not None
diff --git a/openslides/projector/signals.py b/openslides/projector/signals.py
index b1700a732..f93c17975 100644
--- a/openslides/projector/signals.py
+++ b/openslides/projector/signals.py
@@ -15,13 +15,12 @@ from django.dispatch import Signal, receiver
 from django import forms
 from django.template.loader import render_to_string
 from django.core.context_processors import csrf
+from django.contrib.staticfiles.templatetags.staticfiles import static
 
-from openslides.config.api import config
+from openslides.config.api import config, ConfigVariable, ConfigPage
 from openslides.config.signals import config_signal
-from openslides.config.api import ConfigVariable, ConfigPage
 
 from .projector import Overlay
-from .api import clear_projector_cache
 
 
 projector_overlays = Signal(providing_args=['request'])
@@ -34,13 +33,13 @@ def setup_projector_config_variables(sender, **kwargs):
     config page.
     """
 
-    presentation = ConfigVariable(
-        name='presentation',
-        default_value='')
-
-    presentation_argument = ConfigVariable(
-        name='presentation_argument',
-        default_value=None)
+    projector = ConfigVariable(
+        name='projector_active_slide',
+        default_value={'callback': None})
+    """
+    The active slide. The config-value is a dictonary with at least the entrie
+    'callback'.
+    """
 
     projector_message = ConfigVariable(
         name='projector_message',
@@ -76,7 +75,7 @@ def setup_projector_config_variables(sender, **kwargs):
 
     return ConfigPage(
         title='No title here', url='bar', required_permission=None, variables=(
-            presentation, presentation_argument, projector_message,
+            projector, projector_message,
             countdown_time, countdown_start_stamp, countdown_pause_stamp,
             countdown_state, bigger, up, projector_active_overlays))
 
@@ -97,30 +96,32 @@ def countdown(sender, **kwargs):
             'countdown_time': config['countdown_time'],
             'countdown_state': config['countdown_state']}
         context.update(csrf(request))
-        return render_to_string('projector/overlay_countdown_widget.html', context)
+        return render_to_string('projector/overlay_countdown_widget.html',
+                                context)
+
+    def get_projector_js():
+        """
+        Returns JavaScript for the projector
+        """
+        start = int(config['countdown_start_stamp'])
+        duration = int(config['countdown_time'])
+        pause = int(config['countdown_pause_stamp'])
+        state = config['countdown_state']
+
+        return {
+            'load_file': static('javascript/countdown.js'),
+            'projector_countdown_start': start,
+            'projector_countdown_duration': duration,
+            'projector_countdown_pause': pause,
+            'projector_countdown_state': state}
 
     def get_projector_html():
         """
         Returns an html-code to show on the projector.
         """
-        start = config['countdown_start_stamp']
-        duration = config['countdown_time']
-        pause = config['countdown_pause_stamp']
-        if config['countdown_state'] == 'active':
-            seconds = max(0, int(start + duration - time()))
-        elif config['countdown_state'] == 'paused':
-            seconds = max(0, int(start + duration - pause))
-        elif config['countdown_state'] == 'inactive':
-            seconds = max(0, int(duration))
-        else:
-            seconds = 0
-        if seconds == 0:
-            config['countdown_state'] = 'expired'
-        clear_projector_cache()
-        return render_to_string('projector/overlay_countdown_projector.html',
-                                {'seconds': '%02d:%02d' % (seconds / 60, seconds % 60)})
+        return render_to_string('projector/overlay_countdown_projector.html')
 
-    return Overlay(name, get_widget_html, get_projector_html)
+    return Overlay(name, get_widget_html, get_projector_html, get_projector_js)
 
 
 @receiver(projector_overlays, dispatch_uid="projector_message")
@@ -148,3 +149,26 @@ def projector_message(sender, **kwargs):
         return None
 
     return Overlay(name, get_widget_html, get_projector_html)
+
+
+@receiver(projector_overlays, dispatch_uid="projector_clock")
+def projector_clock(sender, **kwargs):
+    """
+    Receiver to show the clock on the projector.
+    """
+    name = 'projector_clock'
+
+    def get_projector_html():
+        """
+        Returns the html-code for the clock.
+        """
+        return render_to_string('projector/overlay_clock_projector.html')
+
+    def get_projector_js():
+        """
+        Returns JavaScript for the projector
+        """
+        return {'load_file': static('javascript/clock.js')}
+
+    return Overlay(name, None, get_projector_html, get_projector_js,
+                   allways_active=True)
diff --git a/openslides/projector/slides.py b/openslides/projector/slides.py
new file mode 100644
index 000000000..6ecd7901e
--- /dev/null
+++ b/openslides/projector/slides.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+    openslides.projector.slides
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Slides for the projector app.
+
+    :copyright: 2011–2013 by OpenSlides team, see AUTHORS.
+    :license: GNU GPL, see LICENSE for more details.
+"""
+
+from django.template.loader import render_to_string
+
+from openslides.config.api import config
+from openslides.projector.api import register_slide
+
+from .models import ProjectorSlide
+
+
+def projector_slide(**kwargs):
+    """
+    Return the html code for a custom slide.
+    """
+    slide_pk = kwargs.get('pk', None)
+
+    try:
+        slide = ProjectorSlide.objects.get(pk=slide_pk)
+    except ProjectorSlide.DoesNotExist:
+        slide = None
+
+    context = {'slide': slide}
+    return render_to_string('projector/slide_projectorslide.html', context)
+
+
+register_slide('projector_slide', projector_slide)
diff --git a/openslides/projector/static/javascript/clock.js b/openslides/projector/static/javascript/clock.js
new file mode 100644
index 000000000..6b3de95c4
--- /dev/null
+++ b/openslides/projector/static/javascript/clock.js
@@ -0,0 +1,8 @@
+function update_clock() {
+    var currentTime = new Date();
+    var currentHours = currentTime.getHours();
+    var currentMinutes = currentTime.getMinutes();
+    $('#currentTime').html(currentHours + ':' + currentMinutes);
+    setTimeout('update_clock()', 200);
+}
+update_clock();
diff --git a/openslides/projector/static/javascript/countdown.js b/openslides/projector/static/javascript/countdown.js
new file mode 100644
index 000000000..fb428c948
--- /dev/null
+++ b/openslides/projector/static/javascript/countdown.js
@@ -0,0 +1,25 @@
+function update_countdown() {
+    var time = new Date().getTime() / 1000;
+    var seconds;
+    var start = projector.projector_countdown_start;
+    var duration = projector.projector_countdown_duration;
+    var pause = projector.projector_countdown_pause;
+
+    switch (projector.projector_countdown_state) {
+        case 'active':
+            seconds = start + duration - time;
+            break;
+        case 'paused':
+            seconds = start + duration - pause;
+            break;
+        case 'inactive':
+            seconds = duration;
+            break;
+    }
+    if (seconds !== undefined) {
+        seconds = Math.max(0, Math.floor(seconds));
+        $('#overlay_countdown_inner').html(seconds);
+    }
+    setTimeout('update_countdown()', 200);
+}
+update_countdown();
diff --git a/openslides/projector/static/javascript/projector.js b/openslides/projector/static/javascript/projector.js
index 36d27ee0b..09ad3920d 100644
--- a/openslides/projector/static/javascript/projector.js
+++ b/openslides/projector/static/javascript/projector.js
@@ -1,62 +1,67 @@
 /**
  * OpenSlides projector functions
  *
- * :copyright: 2011, 2012 by OpenSlides team, see AUTHORS.
+ * :copyright: 2011–2013 by OpenSlides team, see AUTHORS.
  * :license: GNU GPL, see LICENSE for more details.
  */
 
-content_hash = null;
+$(document).ready(function() {
+    if ($('#content.reload').length > 0) {
+        updater.start();
+    }
+});
 
-function presentation_reload() {
-    if ($('#config > #ajax').html() == 'on') {
-        $.ajax({
-            type: 'GET',
-            url: '/projector/',
-            dataType: 'json',
-            success: function(data) {
-                $('#currentTime').removeClass('ajax_error');
-                var new_content_hash = data['content_hash'];
-                if (new_content_hash != content_hash) {
-                    $('#content').html(data.content);
-                    content_hash = new_content_hash;
+var projector = {
+    _loaded_files: {},
+
+    load_file: function(src) {
+        if (projector._loaded_files[src] === undefined) {
+            projector._loaded_files[src] = document.createElement('script');
+            projector._loaded_files[src].setAttribute("type","text/javascript");
+            projector._loaded_files[src].setAttribute("src", src);
+            $('head').append(projector._loaded_files[src]);
+        }
+    },
+
+    update_data: function(data) {
+       $.each(data, function (key, value) {
+            if (key === 'load_file')
+                projector.load_file(value);
+            else
+                projector[key] = value;
+        });
+    }
+};
+
+var updater = {
+    socket: null,
+
+    start: function() {
+        var url = "ws://" + location.host + "/projector/socket/";
+        updater.socket = new WebSocket(url);
+        updater.socket.onmessage = function(event) {
+            updater.updateProjector(JSON.parse(event.data));
+        }
+        updater.socket.onclose = function() {
+            setTimeout('updater.start()', 5000);
+        }
+    },
+
+    updateProjector: function(data) {
+        $('#content').html(data.content);
+        var overlays = data.overlays;
+        $.each(overlays, function (key, value) {
+            var overlay = $('#overlays #overlay_' + key)
+            if (!value)
+                overlay.remove();
+            else {
+                if (overlay.length) {
+                    overlay.html(value.html)
+                } else {
+                    $('#overlays').append(value.html);
                 }
-                $('#scrollcontent').html(data.scrollcontent);
-                document.title = data.title;
-                $('#currentTime').html(data.time);
-                $('#content').clearQueue();
-                // content font-size
-                $('#content').animate({'font-size': data.bigger + '%'}, 200);
-                $('#content #sidebar').css({'font-size': '18px'}, 0);
-                $('#scrollcontent').animate({'font-size': data.bigger + '%'}, 100);
-                // content position
-                $('#scrollcontent').animate({'margin-top': data.up + 'em'}, 100);
-                // overlays
-                $('#overlays div').remove();
-                $.each(data['overlays'], function (index, overlay){
-                    $('#overlays').append('<div id="overlay_' + overlay['name'] + '">' + overlay['html'] + '</div>');
-                });
-                setTimeout("presentation_reload()", 1000);
-            },
-            error: function () {
-                $('#currentTime').addClass('ajax_error');
-                setTimeout("presentation_reload()", 1000);
+                projector.update_data(value.javascript);
             }
         });
     }
-}
-
-function switchajax() {
-    if ($('#config > #ajax').html() == 'on') {
-        $('#config > #ajax').html('off');
-        $('#ajaxswitcher').html('<a href="#" onClick="switchajax()">Ajax Anschalten</a>');
-    } else {
-        $('#config > #ajax').html('on');
-        $('#ajaxswitcher').html('<a href="#" onClick="switchajax()">Ajax Ausschalten</a>');
-    }
-}
-
-$(document).ready(function() {
-    switchajax();
-    switchajax();
-    presentation_reload();
-});
+};
diff --git a/openslides/projector/templates/base-projector.html b/openslides/projector/templates/projector.html
similarity index 50%
rename from openslides/projector/templates/base-projector.html
rename to openslides/projector/templates/projector.html
index 43bb1c2e9..2c8214016 100644
--- a/openslides/projector/templates/base-projector.html
+++ b/openslides/projector/templates/projector.html
@@ -1,4 +1,5 @@
 {% load tags %}
+{% load i18n %}
 {% load staticfiles %}
 
 <!DOCTYPE html>
@@ -6,47 +7,28 @@
     <head>
         <link type="text/css" rel="stylesheet" href="{% static 'styles/projector.css' %}">
         <link rel="shortcut icon" href="{% static 'img/favicon.png' %}" type="image/png" />
-        <script type="text/javascript" src="{% static 'javascript/jquery.min.js' %}"></script>
-        <script type="text/javascript" src="{% static 'javascript/projector.js' %}"></script>
-        <title>{% block title %}{% get_config 'event_name' %}{% endblock %}</title>
-        {% block header %}
-        {% endblock %}
+        <title>{{ 'event_name'|get_config }} – {% trans 'Projector' %}</title>
     </head>
     <body>
-        <div id="config" style="display:none;">
-            <div id="ajax">{{ ajax }}</div>
-        </div>
-        <div id="ajaxswitcher"></div>
-
         <div id="header">
             <div id="logo"><img src="{% static 'img/logo-projector.png' %}"></div>
             <div class="event_name">{% get_config 'event_name' %}</div>
             <div class="event_description">{% get_config 'event_description' %}</div>
         </div>
 
-        <div id="currentTime">
-            {% now "H:i" %}
-        </div>
-
         <div id="overlays">
-            {% for overlay in overlays %}
-                <div id="overlay_{{ overlay.name }}">
-                    {{ overlay.html|safe }}
-                </div>
-            {% endfor %}
+            {{ overlays }}
         </div>
 
-        <div id="contentwrapper">
-            <div id="content">
-            {% block content %}
-            {% endblock %}
-            </div>
-            <div id="scrollcontentcontainer">
-                <div id="scrollcontent">
-                {% block scrollcontent %}
-                {% endblock %}
-                </div>
-            </div>
+        <div id="content" {% if reload %}class="reload"{% endif %}>
+            {{ content }}
         </div>
+        <script type="text/javascript" src="{% static 'javascript/jquery.min.js' %}"></script>
+        <script type="text/javascript" src="{% static 'javascript/projector.js' %}"></script>
+        <script type="text/javascript">
+            {% for js in overlay_js %}
+                projector.update_data({{ js|safe }});
+            {% endfor %}
+        </script>
     </body>
 </html>
diff --git a/openslides/projector/templates/projector/ProjectorSlide.html b/openslides/projector/templates/projector/ProjectorSlide.html
deleted file mode 100644
index 62cd9d4ea..000000000
--- a/openslides/projector/templates/projector/ProjectorSlide.html
+++ /dev/null
@@ -1,19 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load i18n %}
-
-{% block title %}{{ slide.title }}{% endblock %}
-
-{% block content %}
-    {% if slide.text %}
-        <h1>{{ slide.title }}</h1>
-    {% else %}
-        <div class="item_fullscreen">{{ slide.title }}</div>
-    {% endif %}
-{% endblock %}
-
-{% block scrollcontent %}
-    {% if slide.text %}
-        <span>{{ slide.text|safe|linebreaks }}</span>
-    {% endif %}
-{% endblock %}
diff --git a/openslides/projector/templates/projector/all_overlays.html b/openslides/projector/templates/projector/all_overlays.html
new file mode 100644
index 000000000..59494c20c
--- /dev/null
+++ b/openslides/projector/templates/projector/all_overlays.html
@@ -0,0 +1,3 @@
+{% for overlay in overlays %}
+    {{ overlay.html|safe }}
+{% endfor %}
diff --git a/openslides/projector/templates/projector/custom_slide_widget.html b/openslides/projector/templates/projector/custom_slide_widget.html
index cd405e936..fe0062ec3 100644
--- a/openslides/projector/templates/projector/custom_slide_widget.html
+++ b/openslides/projector/templates/projector/custom_slide_widget.html
@@ -3,7 +3,7 @@
 
 <ul style="line-height: 180%">
     <li class="{% if welcomepage_is_active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_welcomepage' %}" class="activate_link btn {% if welcomepage_is_active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
+        <a href="{% url 'projector_activate_slide' 'default' %}" class="activate_link btn {% if welcomepage_is_active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
             <i class="icon-facetime-video {% if welcomepage_is_active %}icon-white{% endif %}"></i>
         </a>&nbsp;
         <a href="{% url 'projctor_preview_welcomepage' %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
@@ -15,18 +15,18 @@
 <hr>
 <ul style="line-height: 180%">
 {% for slide in slides %}
-    <li class="{% if slide.active %}activeline{% endif %}">
-        <a href="{% url 'projector_activate_slide' slide.sid  %}" class="activate_link btn {% if slide.active %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
-            <i class="icon-facetime-video {% if slide.active %}icon-white{% endif %}"></i>
+    <li class="{% if slide.is_active_slide %}activeline{% endif %}">
+        <a href="{{ slide|absolute_url:'projector' }}" class="activate_link btn {% if slide.is_active_slide %}btn-primary{% endif %} btn-mini" title="{% trans 'Show' %}">
+            <i class="icon-facetime-video {% if slide.is_active_slide %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% url 'customslide_edit' slide.id %}">{{ slide }}</a>
-        <a href="{% url 'customslide_delete' slide.id %}" title="{% trans 'Delete' %}" class="btn btn-mini right">
+        <a href="{{ slide|absolute_url:'update' }}">{{ slide }}</a>
+        <a href="{{ slide|absolute_url:'delete' }}" title="{% trans 'Delete' %}" class="btn btn-mini right">
             <i class="icon-remove"></i>
         </a>
-        <a href="{% url 'customslide_edit' slide.id %}" title="{% trans 'Edit' %}" class="btn btn-mini right">
+        <a href="{{ slide|absolute_url:'update' }}" title="{% trans 'Edit' %}" class="btn btn-mini right">
             <i class="icon-pencil"></i>
         </a>
-        <a href="{% url 'projctor_preview_slide' slide.sid %}" title="{% trans 'Preview' %}" class="btn btn-mini right">
+        <a href="{{ slide|absolute_url:'projector_preview' }}" title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
     </li>
@@ -38,4 +38,4 @@
 <a href="{% url 'customslide_new' %}" class="btn btn-mini right">
     <i class="icon-plus"></i>{% trans 'New' %}
 </a>
-</p>
\ No newline at end of file
+</p>
diff --git a/openslides/projector/templates/projector/default.html b/openslides/projector/templates/projector/default.html
deleted file mode 100644
index 3ce29380c..000000000
--- a/openslides/projector/templates/projector/default.html
+++ /dev/null
@@ -1,8 +0,0 @@
-{% extends "base-projector.html" %}
-
-{% load tags %}
-{% load i18n %}
-
-{% block content %}
-    <div class="item_fullscreen">{% get_config 'welcome_title' %}</div>
-{% endblock %}
diff --git a/openslides/projector/templates/projector/default_slide.html b/openslides/projector/templates/projector/default_slide.html
new file mode 100644
index 000000000..b2d06434b
--- /dev/null
+++ b/openslides/projector/templates/projector/default_slide.html
@@ -0,0 +1,4 @@
+{% load tags %}
+
+<div class="item_fullscreen">{% get_config 'welcome_title' %}</div>
+
diff --git a/openslides/projector/templates/projector/overlay_clock_projector.html b/openslides/projector/templates/projector/overlay_clock_projector.html
new file mode 100644
index 000000000..f25ab7182
--- /dev/null
+++ b/openslides/projector/templates/projector/overlay_clock_projector.html
@@ -0,0 +1 @@
+<div id="currentTime"></div>
diff --git a/openslides/projector/templates/projector/overlay_countdown_projector.html b/openslides/projector/templates/projector/overlay_countdown_projector.html
index 48eeb8cbd..589054c3a 100644
--- a/openslides/projector/templates/projector/overlay_countdown_projector.html
+++ b/openslides/projector/templates/projector/overlay_countdown_projector.html
@@ -13,5 +13,4 @@
 </style>
 
 <div id="overlay_countdown_inner">
-    {{ seconds }}
 </div>
diff --git a/openslides/projector/templates/projector/slide_projectorslide.html b/openslides/projector/templates/projector/slide_projectorslide.html
new file mode 100644
index 000000000..e49a70603
--- /dev/null
+++ b/openslides/projector/templates/projector/slide_projectorslide.html
@@ -0,0 +1,12 @@
+{% load i18n %}
+
+{% if slide.text %}
+    <h1>{{ slide.title }}</h1>
+{% else %}
+    <div class="item_fullscreen">{{ slide.title }}</div>
+{% endif %}
+
+
+{% if slide.text %}
+    <span>{{ slide.text|safe|linebreaks }}</span>
+{% endif %}
diff --git a/openslides/projector/urls.py b/openslides/projector/urls.py
index e5a8d49c6..c0f97ba4e 100644
--- a/openslides/projector/urls.py
+++ b/openslides/projector/urls.py
@@ -21,19 +21,23 @@ from openslides.projector.views import (DashboardView, ActivateView,
 urlpatterns = patterns('',
     url(r'^$',
         Projector.as_view(),
-        {'sid': None},
         name='projector_show',
     ),
 
     url(r'^preview/$',
         Projector.as_view(),
-        {'sid': None},
+        {'callback': None},
         name='projctor_preview_welcomepage',
     ),
 
-    url(r'^preview/(?P<sid>[^/]*)/$',
+    url(r'^preview/(?P<callback>[^/]*)/$',
         Projector.as_view(),
-        name='projctor_preview_slide',
+        name='projector_preview',
+    ),
+
+    url(r'^activate/(?P<callback>[^/]*)/$',
+        ActivateView.as_view(),
+        name='projector_activate_slide',
     ),
 
     url(r'^dashboard/$',
@@ -41,22 +45,6 @@ urlpatterns = patterns('',
         name='dashboard',
     ),
 
-    url(r'^activate/$',
-        ActivateView.as_view(),
-        {'sid': None},
-        name='projector_activate_welcomepage',
-    ),
-
-    url(r'^activate/(?P<sid>[^/]*)/$',
-        ActivateView.as_view(),
-        name='projector_activate_slide',
-    ),
-
-    url(r'^activate/(?P<sid>[^/]*)/(?P<argument>[^/]*)/$',
-        ActivateView.as_view(),
-        name='projector_activate_slide',
-    ),
-
     url(r'^widgets/$',
         SelectWidgetsView.as_view(),
         name='projector_select_widgets',
diff --git a/openslides/projector/views.py b/openslides/projector/views.py
index 6a2a30041..7eb2195df 100644
--- a/openslides/projector/views.py
+++ b/openslides/projector/views.py
@@ -28,15 +28,16 @@ from openslides.utils.views import (
     TemplateView, RedirectView, CreateView, UpdateView, DeleteView, AjaxMixin)
 from openslides.config.api import config
 from .api import (
-    get_active_slide, set_active_slide, get_slide_from_sid, get_all_widgets,
-    clear_projector_cache)
+    get_projector_content, get_projector_overlays, get_all_widgets,
+    set_active_slide, update_projector, get_active_slide, update_projector_overlay,
+    get_overlays, get_projector_overlays_js)
 from .forms import SelectWidgetsForm
 from .models import ProjectorSlide
 from .projector import Widget
 from .signals import projector_overlays
 
 
-class DashboardView(TemplateView, AjaxMixin):
+class DashboardView(AjaxMixin, TemplateView):
     """
     Overview over all possible slides, the overlays and a liveview.
     """
@@ -50,96 +51,33 @@ class DashboardView(TemplateView, AjaxMixin):
         return context
 
 
-class Projector(TemplateView, AjaxMixin):
+class Projector(TemplateView):
     """
     The Projector-Page.
     """
     permission_required = 'projector.can_see_projector'
-
-    @property
-    def data(self):
-        try:
-            return self._data
-        except AttributeError:
-            pass
-        sid = self.kwargs['sid']
-        if sid is None:
-            try:
-                data = get_active_slide()
-            except AttributeError:  # TODO: It has to be an Slide.DoesNotExist
-                data = None
-            ajax = 'on'
-            active_sid = get_active_slide(True)
-        else:
-            data = get_slide_from_sid(sid)
-            ajax = 'off'
-
-        if data is None:
-            data = {
-                'title': config['event_name'],
-                'template': 'projector/default.html',
-            }
-        data['ajax'] = ajax
-
-        # Projector overlays
-        data['overlays'] = []
-        # Do not show overlays on slide preview
-        if self.kwargs['sid'] is None:
-            for receiver, overlay in projector_overlays.send(sender=self):
-                if overlay.show_on_projector():
-                    data['overlays'].append({'name': overlay.name,
-                                             'html': overlay.get_projector_html()})
-
-        self._data = data
-        return data
-
-    def get_template_names(self):
-        return [self.data['template']]
+    template_name = 'projector.html'
 
     def get_context_data(self, **kwargs):
-        context = super(Projector, self).get_context_data(**kwargs)
-        context.update(self.data)
-        return context
+        slide_dict = dict(self.request.GET.items())
+        callback = self.kwargs.get('callback', None)
+        if callback:
+            slide_dict['callback'] = callback
 
-    def get_ajax_context(self, **kwargs):
-        content = cache.get('projector_content')
-        if not content:
-            content = render_block_to_string(
-                self.get_template_names()[0],
-                'content', self.data)
-            cache.set('projector_content', content, 1)
+        if not slide_dict:
+            kwargs.update({
+                'content':  get_projector_content(),
+                'overlays': get_projector_overlays(),
+                'overlay_js': get_projector_overlays_js(),
+                'reload': True})
 
-        scrollcontent = cache.get('projector_scrollcontent')
-        if not scrollcontent:
-            scrollcontent = render_block_to_string(
-                self.get_template_names()[0],
-                'scrollcontent', self.data)
-            cache.set('projector_scrollcontent', scrollcontent, 1)
+        # For the Preview
+        else:
+            kwargs.update({
+                'content':  get_projector_content(slide_dict),
+                'reload': False})
 
-        # TODO: do not call the hole data-methode, if we only need some vars
-        data = cache.get('projector_data')
-        if not data:
-            data = self.data
-            cache.set('projector_data', data)
-
-        context = super(Projector, self).get_ajax_context(**kwargs)
-        content_hash = hash(content)
-        context.update({
-            'content': content,
-            'scrollcontent': scrollcontent,
-            'time': datetime.now().strftime('%H:%M'),
-            'overlays': data['overlays'],
-            'title': data['title'],
-            'bigger': config['bigger'],
-            'up': config['up'],
-            'content_hash': content_hash,
-        })
-        return context
-
-    def get(self, request, *args, **kwargs):
-        if request.is_ajax():
-            return self.ajax_get(request, *args, **kwargs)
-        return super(Projector, self).get(request, *args, **kwargs)
+        return super(Projector, self).get_context_data(**kwargs)
 
 
 class ActivateView(RedirectView):
@@ -151,10 +89,7 @@ class ActivateView(RedirectView):
     allow_ajax = True
 
     def pre_redirect(self, request, *args, **kwargs):
-        try:
-            set_active_slide(kwargs['sid'], kwargs['argument'])
-        except KeyError:
-            set_active_slide(kwargs['sid'])
+        set_active_slide(kwargs['callback'], kwargs=dict(request.GET.items()))
         config['up'] = 0
         config['bigger'] = 100
 
@@ -267,9 +202,9 @@ class CountdownEdit(RedirectView):
                 pass
             except AttributeError:
                 pass
+        update_projector_overlay('projector_countdown')
 
     def get_ajax_context(self, **kwargs):
-        clear_projector_cache()
         return {
             'state': config['countdown_state'],
             'countdown_time': config['countdown_time'],
@@ -289,9 +224,9 @@ class OverlayMessageView(RedirectView):
             config['projector_message'] = request.POST['message_text']
         elif 'message-clean' in request.POST:
             config['projector_message'] = ''
+        update_projector_overlay('projector_message')
 
     def get_ajax_context(self, **kwargs):
-        clear_projector_cache()
         return {
             'overlay_message': config['projector_message'],
         }
@@ -306,21 +241,20 @@ class ActivateOverlay(RedirectView):
     permission_required = 'projector.can_manage_projector'
 
     def pre_redirect(self, request, *args, **kwargs):
-        self.name = kwargs['name']
-        active_overlays = config['projector_active_overlays']
+        overlay = get_overlays()[kwargs['name']]
+        self.name = overlay.name
         if kwargs['activate']:
-            if self.name not in active_overlays:
-                active_overlays.append(self.name)
-                config['projector_active_overlays'] = active_overlays
+            if not overlay.is_active():
+                overlay.set_active(True)
+                update_projector_overlay(overlay)
             self.active = True
-        elif not kwargs['activate']:
-            if self.name in active_overlays:
-                active_overlays.remove(self.name)
-                config['projector_active_overlays'] = active_overlays
+        else:
+            if overlay.is_active():
+                overlay.set_active(False)
+                update_projector_overlay(overlay)
             self.active = False
 
     def get_ajax_context(self, **kwargs):
-        clear_projector_cache()
         return {'active': self.active, 'name': self.name}
 
 
@@ -399,7 +333,8 @@ def get_widgets(request):
     # Overlay widget
     overlays = []
     for receiver, overlay in projector_overlays.send(sender='overlay_widget', request=request):
-        overlays.append(overlay)
+        if overlay.widget_html_callback is not None:
+            overlays.append(overlay)
     context = {'overlays': overlays}
     context.update(csrf(request))
     widgets.append(Widget(
@@ -413,6 +348,7 @@ def get_widgets(request):
         context=context))
 
     # Custom slide widget
+    welcomepage_is_active = get_active_slide().get('callback', 'default') == 'default'
     widgets.append(Widget(
         request,
         name='custom_slide',
@@ -420,7 +356,7 @@ def get_widgets(request):
         template='projector/custom_slide_widget.html',
         context={
             'slides': ProjectorSlide.objects.all().order_by('weight'),
-            'welcomepage_is_active': not bool(config["presentation"])},
+            'welcomepage_is_active': welcomepage_is_active},
         permission_required='projector.can_manage_projector',
         default_column=2,
         default_weight=30))
diff --git a/openslides/utils/tornado_webserver.py b/openslides/utils/tornado_webserver.py
index b9b53ae3f..f626ef474 100644
--- a/openslides/utils/tornado_webserver.py
+++ b/openslides/utils/tornado_webserver.py
@@ -8,15 +8,15 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
-import sys
 import posixpath
 from urllib import unquote
 
 from tornado.httpserver import HTTPServer
 from tornado.ioloop import IOLoop
 from tornado.web import FallbackHandler, Application, StaticFileHandler
+from tornado.websocket import WebSocketHandler
 from tornado.wsgi import WSGIContainer
-from tornado.options import options, parse_command_line
+from tornado.options import parse_command_line
 
 from django.core.handlers.wsgi import WSGIHandler as Django_WSGIHandler
 from django.conf import settings
@@ -38,6 +38,25 @@ class DjangoStaticFileHandler(StaticFileHandler):
         return super(DjangoStaticFileHandler, self).get(absolute_path, include_body)
 
 
+class ProjectorSocketHandler(WebSocketHandler):
+    waiters = set()
+
+    ## def allow_draft76(self):
+        ## # for iOS 5.0 Safari
+        ## return True
+
+    def open(self):
+        ProjectorSocketHandler.waiters.add(self)
+
+    def on_close(self):
+        ProjectorSocketHandler.waiters.remove(self)
+
+    @classmethod
+    def send_updates(cls, slide):
+        for waiter in cls.waiters:
+            waiter.write_message(slide)
+
+
 def run_tornado(addr, port, reload=False):
     # Don't try to read the command line args from openslides
     parse_command_line(args=[])
@@ -54,7 +73,9 @@ def run_tornado(addr, port, reload=False):
     tornado_app = Application([
         (r"%s(.*)" % settings.STATIC_URL, DjangoStaticFileHandler),
         (r'%s(.*)' % settings.MEDIA_URL, StaticFileHandler, {'path': settings.MEDIA_ROOT}),
-        ('.*', FallbackHandler, dict(fallback=app))], debug=reload)
+        (r'/projector/socket/', ProjectorSocketHandler),
+        ('.*', FallbackHandler, dict(fallback=app))
+    ], debug=reload)
 
     server = HTTPServer(tornado_app)
     server.listen(port=port,
diff --git a/openslides/utils/utils.py b/openslides/utils/utils.py
index f6e6314c5..fb4fb8030 100644
--- a/openslides/utils/utils.py
+++ b/openslides/utils/utils.py
@@ -141,3 +141,10 @@ def htmldiff(text1, text2):
 
     diff = difflib.HtmlDiff(wrapcolumn=60)
     return diff.make_table(text1.splitlines(), text2.splitlines())
+
+
+def int_or_none(object):
+    try:
+        return int(object)
+    except TypeError:
+        return None
diff --git a/openslides/utils/views.py b/openslides/utils/views.py
index a0435433e..6265b5294 100644
--- a/openslides/utils/views.py
+++ b/openslides/utils/views.py
@@ -480,6 +480,7 @@ def send_register_tab(sender, request, context, **kwargs):
         extra_stylefiles = context['extra_stylefiles']
     else:
         extra_stylefiles = []
+    # TODO: Do not go over the filesystem by any request
     for app in settings.INSTALLED_APPS:
         try:
             mod = import_module(app + '.views')
diff --git a/tests/agenda/models.py b/tests/agenda/models.py
index 1aa8eee7a..c14b81117 100644
--- a/tests/agenda/models.py
+++ b/tests/agenda/models.py
@@ -1,16 +1,11 @@
 from django.db import models
 
-from openslides.projector.projector import SlideMixin
-from openslides.projector.api import register_slidemodel
-
-
-class ReleatedItem(SlideMixin, models.Model):
-    prefix = 'releateditem'
 
+class RelatedItem(models.Model):
     name = models.CharField(max_length='255')
 
     class Meta:
-        verbose_name = 'Releated Item CHFNGEJ5634DJ34F'
+        verbose_name = 'Related Item CHFNGEJ5634DJ34F'
 
     def get_agenda_title(self):
         return self.name
@@ -22,11 +17,5 @@ class ReleatedItem(SlideMixin, models.Model):
         return '/absolute-url-here/'
 
 
-class BadReleatedItem(SlideMixin, models.Model):
-    prefix = 'badreleateditem'
-
+class BadRelatedItem(models.Model):
     name = models.CharField(max_length='255')
-
-
-register_slidemodel(ReleatedItem)
-register_slidemodel(BadReleatedItem)
diff --git a/tests/agenda/test_list_of_speakers.py b/tests/agenda/test_list_of_speakers.py
index f9ddc35b3..b80d9a065 100644
--- a/tests/agenda/test_list_of_speakers.py
+++ b/tests/agenda/test_list_of_speakers.py
@@ -14,6 +14,7 @@ from openslides.utils.test import TestCase
 from openslides.participant.models import User, Group
 from openslides.agenda.models import Item, Speaker
 from openslides.config.api import config
+from openslides.projector.api import set_active_slide
 
 
 class ListOfSpeakerModelTests(TestCase):
@@ -214,36 +215,30 @@ class SpeakerListOpenView(SpeakerViewTestCase):
 
 class GlobalListOfSpeakersLinks(SpeakerViewTestCase):
     def test_global_redirect_url(self):
-        self.assertFalse(config['presentation'])
         response = self.speaker1_client.get('/agenda/list_of_speakers/')
         self.assertRedirects(response, '/projector/dashboard/')
         self.assertMessage(response, 'There is no list of speakers for the current slide. Please choose the agenda item manually from the agenda.')
 
-        response = self.admin_client.get('/projector/activate/item-1/')
-        self.assertEqual(config['presentation'], 'item-1')
+        set_active_slide('agenda', {'pk': 1})
         response = self.speaker1_client.get('/agenda/list_of_speakers/')
         self.assertRedirects(response, '/agenda/1/')
 
     def test_global_add_url(self):
-        self.assertFalse(config['presentation'])
         response = self.speaker1_client.get('/agenda/list_of_speakers/add/')
         self.assertRedirects(response, '/projector/dashboard/')
         self.assertMessage(response, 'There is no list of speakers for the current slide. Please choose the agenda item manually from the agenda.')
 
-        response = self.admin_client.get('/projector/activate/item-1/')
-        self.assertEqual(config['presentation'], 'item-1')
+        set_active_slide('agenda', {'pk': 1})
         response = self.speaker1_client.get('/agenda/list_of_speakers/add/')
         self.assertRedirects(response, '/agenda/1/')
         self.assertEqual(Speaker.objects.get(item__pk='1').person, self.speaker1)
 
     def test_global_next_speaker_url(self):
-        self.assertFalse(config['presentation'])
         response = self.admin_client.get('/agenda/list_of_speakers/next/')
         self.assertRedirects(response, '/projector/dashboard/')
         self.assertMessage(response, 'There is no list of speakers for the current slide. Please choose the agenda item manually from the agenda.')
 
-        response = self.admin_client.get('/projector/activate/item-1/')
-        self.assertEqual(config['presentation'], 'item-1')
+        set_active_slide('agenda', {'pk': 1})
         response = self.admin_client.get('/agenda/list_of_speakers/next/')
         self.assertRedirects(response, '/projector/dashboard/')
         self.assertMessage(response, 'The list of speakers is empty.')
@@ -255,13 +250,11 @@ class GlobalListOfSpeakersLinks(SpeakerViewTestCase):
         self.assertTrue(Speaker.objects.get(item__pk='1').begin_time is not None)
 
     def test_global_end_speach_url(self):
-        self.assertFalse(config['presentation'])
         response = self.admin_client.get('/agenda/list_of_speakers/end_speach/')
         self.assertRedirects(response, '/projector/dashboard/')
         self.assertMessage(response, 'There is no list of speakers for the current slide. Please choose the agenda item manually from the agenda.')
 
-        response = self.admin_client.get('/projector/activate/item-1/')
-        self.assertEqual(config['presentation'], 'item-1')
+        set_active_slide('agenda', {'pk': 1})
         response = self.admin_client.get('/agenda/list_of_speakers/end_speach/')
         self.assertRedirects(response, '/projector/dashboard/')
         self.assertMessage(response, 'There is no one speaking at the moment.')
diff --git a/tests/agenda/tests.py b/tests/agenda/tests.py
index aa23ebba5..3b08da8ba 100644
--- a/tests/agenda/tests.py
+++ b/tests/agenda/tests.py
@@ -14,12 +14,12 @@ from django.test.client import Client
 from django.db.models.query import EmptyQuerySet
 
 from openslides.utils.test import TestCase
-from openslides.projector.api import get_active_slide
+from openslides.projector.api import get_active_slide, set_active_slide
 from openslides.participant.models import User
 from openslides.agenda.models import Item
-from openslides.agenda.slides import agenda_show
+from openslides.agenda.slides import agenda_slide
 
-from .models import ReleatedItem, BadReleatedItem  # TODO: Rename releated to related
+from .models import RelatedItem, BadRelatedItem
 
 
 class ItemTest(TestCase):
@@ -28,8 +28,8 @@ class ItemTest(TestCase):
         self.item2 = Item.objects.create(title='item2')
         self.item3 = Item.objects.create(title='item1A', parent=self.item1)
         self.item4 = Item.objects.create(title='item1Aa', parent=self.item3)
-        self.releated = ReleatedItem.objects.create(name='ekdfjen458gj1siek45nv')
-        self.item5 = Item.objects.create(title='item5', content_object=self.releated)
+        self.related = RelatedItem.objects.create(name='ekdfjen458gj1siek45nv')
+        self.item5 = Item.objects.create(title='item5', content_object=self.related)
 
     def testClosed(self):
         self.assertFalse(self.item1.closed)
@@ -78,24 +78,18 @@ class ItemTest(TestCase):
         self.assertEqual(self.item1.get_absolute_url('edit'), '/agenda/1/edit/')
         self.assertEqual(self.item1.get_absolute_url('delete'), '/agenda/1/del/')
 
-    def test_agenda_slide(self):
-        data = agenda_show()
-        self.assertEqual(list(data['items']), list(Item.objects.all().filter(parent=None)))
-        self.assertEqual(data['template'], 'projector/AgendaSummary.html')
-        self.assertEqual(data['title'], 'Agenda')
-
-    def test_releated_item(self):
-        self.assertEqual(self.item5.get_title(), self.releated.name)
+    def test_related_item(self):
+        self.assertEqual(self.item5.get_title(), self.related.name)
         self.assertEqual(self.item5.get_title_supplement(), 'test item')
-        self.assertEqual(self.item5.content_type.name, 'Releated Item CHFNGEJ5634DJ34F')
+        self.assertEqual(self.item5.content_type.name, 'Related Item CHFNGEJ5634DJ34F')
 
-    def test_deleted_releated_item(self):
-        self.releated.delete()
-        self.assertFalse(ReleatedItem.objects.all().exists())
+    def test_deleted_related_item(self):
+        self.related.delete()
+        self.assertFalse(RelatedItem.objects.all().exists())
         self.assertEqual(Item.objects.get(pk=self.item5.pk).title, '< Item for deleted slide (ekdfjen458gj1siek45nv) >')
 
-    def test_bad_releated_item(self):
-        bad = BadReleatedItem.objects.create(name='dhfne94irkgl2047fzvb')
+    def test_bad_related_item(self):
+        bad = BadRelatedItem.objects.create(name='dhfne94irkgl2047fzvb')
         item = Item.objects.create(title='item_jghfndzrh46w738kdmc', content_object=bad)
         self.assertRaisesMessage(
             NotImplementedError,
@@ -138,20 +132,6 @@ class ViewTest(TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertEqual(len(response.context['items']), len(Item.objects.all()))
 
-    def testActivate(self):
-        c = self.adminClient
-
-        response = c.get('/projector/activate/%s/' % self.item1.sid)
-        self.assertEqual(response.status_code, 302)
-        self.assertTrue(self.item1.active)
-        self.assertFalse(self.item2.active)
-
-        response = c.get('/projector/activate/%s/' % 'agenda')
-        self.assertEqual(response.status_code, 302)
-        self.assertFalse(self.item2.active)
-        self.assertFalse(self.item1.active)
-        self.assertEqual(get_active_slide(only_sid=True), 'agenda')
-
     def testClose(self):
         c = self.adminClient