diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/web/views/ajaxedit.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/web/views/ajaxedit.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,111 @@
+# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+"""Set of views allowing edition of entities/relations using ajax"""
+
+__docformat__ = "restructuredtext en"
+
+from cubicweb import role
+from cubicweb.view import View
+from cubicweb.predicates import match_form_params, match_kwargs
+from cubicweb.web import component, stdmsgs, formwidgets as fw
+
+class AddRelationView(component.EditRelationMixIn, View):
+    """base class for view which let add entities linked by a given relation
+
+    subclasses should define at least id, rtype and target class attributes.
+    """
+    __registry__ = 'views'
+    __regid__ = 'xaddrelation'
+    __select__ = (match_form_params('rtype', 'target')
+                  | match_kwargs('rtype', 'target'))
+    cw_property_defs = {} # don't want to inherit this from Box
+    expected_kwargs = form_params = ('rtype', 'target')
+
+    def cell_call(self, row, col, rtype=None, target=None, etype=None):
+        self.rtype = rtype or self._cw.form['rtype']
+        self.target = target or self._cw.form['target']
+        self.etype = etype or self._cw.form.get('etype')
+        entity = self.cw_rset.get_entity(row, col)
+        rschema = self._cw.vreg.schema.rschema(self.rtype)
+        if not self.etype:
+            if self.target == 'object':
+                etypes = rschema.objects(entity.e_schema)
+            else:
+                etypes = rschema.subjects(entity.e_schema)
+            if len(etypes) == 1:
+                self.etype = etypes[0]
+        self.w(u'<div id="%s">' % self.domid)
+        self.w(u'<h1>%s</h1>' % self._cw._('relation %(relname)s of %(ent)s')
+               % {'relname': rschema.display_name(self._cw, role(self)),
+                  'ent': entity.view('incontext')})
+        self.w(u'<ul class="list-unstyled">')
+        for boxitem in self.unrelated_boxitems(entity):
+            self.w('<li>%s</li>' % boxitem)
+        self.w(u'</ul></div>')
+
+    def unrelated_entities(self, entity):
+        """returns the list of unrelated entities
+
+        if etype is not defined on the Box's class, the default
+        behaviour is to use the entity's appropraite vocabulary function
+        """
+        # use entity.unrelated if we've been asked for a particular etype
+        if getattr(self, 'etype', None):
+            rset = entity.unrelated(self.rtype, self.etype, role(self),
+                                    ordermethod='fetch_order')
+            self.paginate(self._cw, rset=rset, w=self.w)
+            return rset.entities()
+        super(AddRelationView, self).unrelated_entities(self)
+
+
+def ajax_composite_form(container, entity, rtype, okjs, canceljs,
+                        entityfkwargs=None):
+    """
+    * if entity is None, edit container (assert container.has_eid())
+    * if entity has not eid, will be created
+    * if container has not eid, will be created (see vcreview InsertionPoint)
+    """
+    req = container._cw
+    parentexists = entity is None or container.has_eid()
+    buttons = [fw.Button(onclick=okjs),
+               fw.Button(stdmsgs.BUTTON_CANCEL, onclick=canceljs)]
+    freg = req.vreg['forms']
+    # main form kwargs
+    mkwargs = dict(action='#', domid='%sForm%s' % (rtype, container.eid),
+                   form_buttons=buttons,
+                   onsubmit='javascript: %s; return false' % okjs)
+    # entity form kwargs
+    # use formtype=inlined to skip the generic relations edition section
+    fkwargs = dict(entity=entity or container, formtype='inlined')
+    if entityfkwargs is not None:
+        fkwargs.update(entityfkwargs)
+    # form values
+    formvalues = {}
+    if entity is not None: # creation
+        formvalues[rtype] = container.eid
+    if parentexists: # creation / edition
+        mkwargs.update(fkwargs)
+        # use formtype=inlined to avoid viewing the relation edition section
+        form = freg.select('edition', req, **mkwargs)
+    else: # creation of both container and comment entities
+        form = freg.select('composite', req, form_renderer_id='default',
+                            **mkwargs)
+        form.add_subform(freg.select('edition', req, entity=container,
+                                      mainform=False, mainentity=True))
+        form.add_subform(freg.select('edition', req, mainform=False, **fkwargs))
+    return form, formvalues