Add signal order_position_buttons

doc/development/api/general.rst

@@ -49,7 +49,7 @@ Backend
 
 .. automodule:: pretix.control.signals
    :members: nav_event, html_head, html_page_start, quota_detail_html, nav_topbar, nav_global, nav_organizer, nav_event_settings,
-             order_info, event_settings_widget, oauth_application_registered
+             order_info, event_settings_widget, oauth_application_registered, order_position_buttons
 
 
 .. automodule:: pretix.base.signals

src/pretix/control/signals.py

@@ -201,6 +201,16 @@ As with all plugin signals, the ``sender`` keyword argument will contain the eve
 Additionally, the argument ``order`` and ``request`` are available.
 """
 
+order_position_buttons = EventPluginSignal(
+    providing_args=["order", "position", "request"]
+)
+"""
+This signal is sent out to display additional buttons for a single position of an order.
+
+As with all plugin signals, the ``sender`` keyword argument will contain the event.
+Additionally, the argument ``order`` and ``request`` are available.
+"""
+
 nav_event_settings = EventPluginSignal(
     providing_args=['request']
 )

src/pretix/control/templates/pretixcontrol/order/index.html

@@ -260,6 +260,8 @@
                                     <br/>
                                     <span class="fa fa-calendar"></span> {{ line.subevent.name }} &middot; {{ line.subevent.get_date_range_display }}
                                 {% endif %}
+                                    {% eventsignal event "pretix.control.signals.order_position_buttons" order=order position=line request=request %}
+                                </div>
                                 {% if line.has_questions %}
                                     <dl>
                                         {% if line.item.admission and event.settings.attendee_names_asked %}

src/pretix/static/pretixcontrol/scss/main.scss

@@ -596,4 +596,7 @@ details summary {
     -moz-transform: rotate(180deg);
     transform: rotate(180deg);
 }
+.position-buttons {
+    padding-left: 20px;
+}