--- a/src/pyams_content/component/gallery/zmi/paragraph.py	Fri Mar 02 15:02:52 2018 +0100
+++ b/src/pyams_content/component/gallery/zmi/paragraph.py	Fri Mar 02 15:35:17 2018 +0100
@@ -33,6 +33,7 @@
 from pyams_content.component.gallery.paragraph import Gallery
 from pyams_content.component.paragraph.zmi import BaseParagraphAJAXAddForm, BaseParagraphAJAXEditForm, \
     BaseParagraphAddMenu, BaseParagraphPropertiesEditForm
+from pyams_content.features.renderer.zmi import BaseRenderedContentPreview
 from pyams_content.features.renderer.zmi.widget import RendererFieldWidget
 from pyams_content.shared.common.zmi import WfSharedContentPermissionMixin
 from pyams_pagelet.pagelet import pagelet_config
@@ -40,7 +41,7 @@
 from pyams_template.template import template_config
 from pyams_utils.adapter import adapter_config
 from pyams_utils.url import absolute_url
-from pyams_viewlet.viewlet import viewlet_config, BaseContentProvider
+from pyams_viewlet.viewlet import viewlet_config
 from pyams_zmi.form import AdminDialogAddForm, InnerAdminDisplayForm
 from pyramid.view import view_config
 from z3c.form import field, button
@@ -184,26 +185,9 @@
 
 
 #
-# Gallery paragraph summary
+# Gallery paragraph preview
 #
 
 @adapter_config(context=(IGalleryParagraph, IPyAMSLayer), provides=IParagraphPreview)
-class GalleryParagraphPreview(BaseContentProvider):
+class GalleryParagraphPreview(BaseRenderedContentPreview):
     """Gallery preview"""
-
-    def __init__(self, context, request):
-        super(GalleryParagraphPreview, self).__init__(context, request)
-        self.renderer = self.context.get_renderer(request)
-
-    language = None
-
-    def update(self):
-        if self.renderer is not None:
-            self.renderer.language = self.language
-            self.renderer.update()
-
-    def render(self):
-        if self.renderer is not None:
-            return self.renderer.render()
-        else:
-            return ''