Define ol/ul as rich text features

wagtail/wagtailadmin/rich_text.py

@@ -56,6 +56,20 @@ class HalloHeadingPlugin(HalloPlugin):
         plugins[self.name]['formatBlocks'].append(self.element)
 
 
+class HalloListPlugin(HalloPlugin):
+    def __init__(self, **kwargs):
+        kwargs.setdefault('name', 'hallolists')
+        kwargs.setdefault('order', 40)
+        self.list_type = kwargs['list_type']
+        super(HalloListPlugin, self).__init__(**kwargs)
+
+    def construct_plugins_list(self, plugins):
+        plugins.setdefault(self.name, {'lists': {
+            'ordered': False, 'unordered': False
+        }})
+        plugins[self.name]['lists'][self.list_type] = True
+
+
 # Plugins which are always imported, and cannot be enabled/disabled via 'features'
 CORE_HALLO_PLUGINS = [
     HalloPlugin(name='halloreundo', order=50),

wagtail/wagtailadmin/wagtail_hooks.py

@@ -7,7 +7,9 @@ from django.utils.translation import ugettext_lazy as _
 
 from wagtail.wagtailadmin.menu import MenuItem, SubmenuMenuItem, settings_menu
 from wagtail.wagtailadmin.navigation import get_explorable_root_page
-from wagtail.wagtailadmin.rich_text import HalloFormatPlugin, HalloHeadingPlugin, HalloPlugin
+from wagtail.wagtailadmin.rich_text import (
+    HalloFormatPlugin, HalloHeadingPlugin, HalloListPlugin, HalloPlugin
+)
 from wagtail.wagtailadmin.search import SearchArea
 from wagtail.wagtailadmin.utils import user_has_any_page_permission
 from wagtail.wagtailadmin.viewsets import viewsets
@@ -217,3 +219,13 @@ def register_core_features(features):
             'hallo', element, HalloHeadingPlugin(element=element)
         )
     features.default_features.extend(['p', 'h2', 'h3', 'h4'])
+
+    features.register_editor_plugin(
+        'hallo', 'ol', HalloListPlugin(list_type='ordered')
+    )
+    features.default_features.append('ol')
+
+    features.register_editor_plugin(
+        'hallo', 'ul', HalloListPlugin(list_type='unordered')
+    )
+    features.default_features.append('ul')