[views] separate threadview from primary view (closes #2441584)

views/email.py

@@ -11,6 +11,7 @@
 
 from cubicweb.selectors import is_instance
 from cubicweb.uilib import soup2xhtml
+from cubicweb.view import EntityView
 from cubicweb.web import uicfg, formwidgets
 from cubicweb.web.views import baseviews, primary
 
@@ -133,6 +134,7 @@
         entity.reverse_parts[0].view('outofcontext', w=self.w)
 
 
-class EmailThreadPrimaryView(primary.PrimaryView):
+class EmailThreadView(EntityView):
+    __regid__ = 'emailthread'
     __select__ = is_instance('EmailThread')
 
@@ -137,8 +139,6 @@
     __select__ = is_instance('EmailThread')
 
-    def cell_call(self, row, col):
-        entity = self.cw_rset.complete_entity(row, col)
-        self.w(u'<h1>%s</h1>' % xml_escape(entity.title))
+    def entity_call(self, entity):
         # get top level emails in this thread (ie message which are not a reply
         # of a message in this thread)
         #
@@ -161,3 +161,11 @@
             self.w(u'</ul>')
 
 
+class EmailThreadPrimaryView(primary.PrimaryView):
+    __select__ = is_instance('EmailThread')
+
+    def cell_call(self, row, col):
+        entity = self.cw_rset.complete_entity(row, col)
+        self.w(u'<h1>%s</h1>' % xml_escape(entity.title))
+        entity.view('emailthread', w=self.w)
+