[feat] Add action dispatcher for images bulk actions

wagtail/images/admin_urls.py

@@ -1,6 +1,6 @@
 from django.urls import path
 
-from wagtail.images.views import chooser, images, multiple
+from wagtail.images.views import bulk_actions, chooser, images, multiple
 
 
 app_name = 'wagtailimages'
@@ -26,4 +26,6 @@ urlpatterns = [
     path('chooser/<int:image_id>/', chooser.image_chosen, name='image_chosen'),
     path('chooser/upload/', chooser.chooser_upload, name='chooser_upload'),
     path('chooser/<int:image_id>/select_format/', chooser.chooser_select_format, name='chooser_select_format'),
+
+    path('multiple/<str:action>/', bulk_actions.index, name='image_bulk_action'),
 ]

wagtail/images/views/bulk_actions/__init__.py

@@ -1,6 +1,7 @@
 from .add_tags import add_tags
 from .add_to_collection import add_to_collection
 from .delete import delete
+from .dispatcher import index
 
 
-__all__ = ['add_tags', 'add_to_collection', 'delete']
+__all__ = ['add_tags', 'add_to_collection', 'delete', 'index']

wagtail/images/views/bulk_actions/dispatcher.py

@@ -0,0 +1,14 @@
+from django.http.response import Http404
+
+from wagtail.core import hooks
+
+
+def index(request, action):
+    bulk_actions = hooks.get_hooks('register_image_bulk_action')
+    for action_func in bulk_actions:
+        _action = action_func(request)
+        if _action.action_type != action:
+            continue
+        return _action.dispatch(request)
+
+    return Http404()