Merge pull request #65 from plone/allow-easier-customization

Allow easier customizations

news/65.bugfix

@@ -0,0 +1 @@
+It is now possible to customize in an easier way the ``@@images`` view [ale-rt]

plone/namedfile/scaling.py

@@ -283,6 +283,7 @@ class ImageScaling(BrowserView):
     # Ignore some stacks to help with accessing via webdav, otherwise you get a
     # 404 NotFound error.
     _ignored_stacks = ('manage_DAVget', 'manage_FTPget')
+    _scale_view_class = ImageScale
 
     def publishTraverse(self, request, name):
         """ used for traversal via publisher, i.e. when using as a url """
@@ -302,15 +303,19 @@ def publishTraverse(self, request, name):
             info = storage.get(name)
             if info is None:
                 raise NotFound(self, name, self.request)
-            scale_view = ImageScale(self.context, self.request, **info)
+            scale_view = self._scale_view_class(
+                self.context,
+                self.request,
+                **info
+            )
             alsoProvides(scale_view, IStableImageScale)
             return scale_view
         else:
             # otherwise `name` must refer to a field...
             if '.' in name:
                 name, ext = name.rsplit('.', 1)
             value = getattr(self.context, name)
-            scale_view = ImageScale(
+            scale_view = self._scale_view_class(
                 self.context,
                 self.request,
                 data=value,
@@ -324,7 +329,7 @@ def traverse(self, name, furtherPath):
         # validate access
         value = self.guarded_orig_image(name)
         if not furtherPath:
-            image = ImageScale(
+            image = self._scale_view_class(
                 self.context,
                 self.request,
                 data=value,
@@ -446,7 +451,7 @@ def scale(
             **parameters
         )
         info['fieldname'] = fieldname
-        scale_view = ImageScale(self.context, self.request, **info)
+        scale_view = self._scale_view_class(self.context, self.request, **info)
         return scale_view
 
     def calculate_srcset(