--- a/src/pyams_content/component/paragraph/zmi/frame.py	Wed Jun 06 13:32:14 2018 +0200
+++ b/src/pyams_content/component/paragraph/zmi/frame.py	Fri Jun 08 10:33:23 2018 +0200
@@ -38,13 +38,13 @@
 from pyams_content.component.paragraph.zmi.container import ParagraphContainerTable, \
     ParagraphTitleToolbarViewletManager
 from pyams_content.features.renderer.zmi.widget import RendererFieldWidget
+from pyams_form.form import ajax_config
 from pyams_pagelet.pagelet import pagelet_config
 from pyams_skin.event import get_json_switched_table_refresh_event, get_json_widget_refresh_event
 from pyams_utils.adapter import adapter_config, ContextRequestAdapter
 from pyams_utils.traversing import get_parent
 from pyams_viewlet.viewlet import viewlet_config
 from pyams_zmi.form import AdminDialogAddForm
-from pyramid.view import view_config
 from z3c.form import field, button
 from zope.interface import implementer, Interface
 
@@ -89,6 +89,8 @@
 
 @pagelet_config(name='add-frame-paragraph.html', context=IParagraphContainerTarget, layer=IPyAMSLayer,
                 permission=MANAGE_CONTENT_PERMISSION)
+@ajax_config(name='add-frame-paragraph.json', context=IParagraphContainerTarget, request_type=IPyAMSLayer,
+             base=BaseParagraphAJAXAddForm)
 @implementer(IFrameParagraphForm)
 class FrameParagraphAddForm(AdminDialogAddForm):
     """Framed text paragraph add form"""
@@ -100,7 +102,6 @@
     input_css_class = 'col-md-10'
 
     fields = field.Fields(IFrameParagraph).omit('__parent__', '__name__', 'visible')
-    ajax_handler = 'add-frame-paragraph.json'
     edit_permission = MANAGE_CONTENT_PERMISSION
 
     def updateWidgets(self, prefix=None):
@@ -115,14 +116,10 @@
         IParagraphContainer(self.context).append(object)
 
 
-@view_config(name='add-frame-paragraph.json', context=IParagraphContainerTarget, request_type=IPyAMSLayer,
-             permission=MANAGE_CONTENT_PERMISSION, renderer='json', xhr=True)
-class FrameParagraphAJAXAddForm(BaseParagraphAJAXAddForm, FrameParagraphAddForm):
-    """Framed text paragraph add form, JSON renderer"""
-
-
 @pagelet_config(name='properties.html', context=IFrameParagraph, layer=IPyAMSLayer,
                 permission=MANAGE_CONTENT_PERMISSION)
+@ajax_config(name='properties.json', context=IFrameParagraph, request_type=IPyAMSLayer,
+             base=BaseParagraphAJAXEditForm)
 @implementer(IFrameParagraphForm)
 class FrameParagraphPropertiesEditForm(BaseParagraphPropertiesEditForm):
     """Framed text paragraph properties edit form"""
@@ -138,7 +135,6 @@
     fields = field.Fields(IFrameParagraph).omit('__parent__', '__name__', 'visible')
     fields['renderer'].widgetFactory = RendererFieldWidget
 
-    ajax_handler = 'properties.json'
     edit_permission = MANAGE_CONTENT_PERMISSION
 
     def updateWidgets(self, prefix=None):
@@ -150,14 +146,8 @@
                 widget.id = '{id}_{name}'.format(id=widget.id, name=self.context.__name__)
             body_widget.widget_css_class = 'textarea'
 
-
-@view_config(name='properties.json', context=IFrameParagraph, request_type=IPyAMSLayer,
-             permission=MANAGE_CONTENT_PERMISSION, renderer='json', xhr=True)
-class FrameParagraphPropertiesAJAXEditForm(BaseParagraphAJAXEditForm, FrameParagraphPropertiesEditForm):
-    """Framed text paragraph properties edit form, JSON renderer"""
-
     def get_ajax_output(self, changes):
-        output = super(FrameParagraphPropertiesAJAXEditForm, self).get_ajax_output(changes)
+        output = super(self.__class__, self).get_ajax_output(changes)
         if 'body' in changes.get(IFrameParagraph, ()):
             # refresh associations count markers
             parent = get_parent(self.context, IAssociationTarget)
@@ -171,12 +161,13 @@
 
 
 @adapter_config(context=(IFrameParagraph, IPyAMSLayer), provides=IParagraphInnerEditor)
+@ajax_config(name='inner-properties.json', context=IFrameParagraph, layer=IPyAMSLayer,
+             base=BaseParagraphAJAXEditForm)
 @implementer(IInnerForm, IPropertiesEditForm, IAssociationsParentForm)
 class FrameParagraphInnerEditForm(FrameParagraphPropertiesEditForm):
     """Framed text paragraph inner edit form"""
 
     legend = None
-    ajax_handler = 'inner-properties.json'
 
     @property
     def buttons(self):
@@ -185,14 +176,8 @@
         else:
             return button.Buttons()
 
-
-@view_config(name='inner-properties.json', context=IFrameParagraph, request_type=IPyAMSLayer,
-             permission=MANAGE_CONTENT_PERMISSION, renderer='json', xhr=True)
-class FrameParagraphInnerAJAXEditForm(BaseParagraphAJAXEditForm, FrameParagraphInnerEditForm):
-    """Framed text paragraph inner edit form, JSON renderer"""
-
     def get_ajax_output(self, changes):
-        output = super(FrameParagraphInnerAJAXEditForm, self).get_ajax_output(changes)
+        output = super(self.__class__, self).get_ajax_output(changes)
         updated = changes.get(IFrameParagraph, ())
         if 'renderer' in updated:
             output.setdefault('events', []).append(