--- a/web/component.py	Mon Jan 31 17:24:05 2011 +0100
+++ b/web/component.py	Mon Jan 31 17:28:51 2011 +0100
@@ -399,6 +399,28 @@
     def domid(self):
         return domid(self.__regid__) + unicode(self.entity.eid)
 
+    def lazy_view_holder(self, w, entity, oid, registry='views'):
+        """add a holder and return an url that may be used to replace this
+        holder by the html generate by the view specified by registry and
+        identifier. Registry defaults to 'views'.
+        """
+        holderid = '%sHolder' % self.domid
+        w(u'<div id="%s"></div>' % holderid)
+        params = self.cw_extra_kwargs.copy()
+        params.pop('view', None)
+        params.pop('entity', None)
+        form = params.pop('formparams', {})
+        form['pageid'] = self._cw.pageid
+        if entity.has_eid():
+            eid = entity.eid
+        else:
+            eid = None
+            form['etype'] = entity.__regid__
+            form['tempEid'] = entity.eid
+        args = [json_dumps(x) for x in (registry, oid, eid, params)]
+        return self._cw.ajax_replace_url(
+            holderid, fname='render', arg=args, **form)
+
 
 # high level abstract classes ##################################################
 

--- a/web/data/cubicweb.ajax.js	Mon Jan 31 17:24:05 2011 +0100
+++ b/web/data/cubicweb.ajax.js	Mon Jan 31 17:28:51 2011 +0100
@@ -563,6 +563,51 @@
                );
 }
 
+/* High-level functions *******************************************************/
+
+/**
+ * .. function:: reloadCtxComponentsSection(context, actualEid, creationEid=None)
+ *
+ * reload all components in the section for a given `context`.
+ *
+ * This is necessary for cases where the parent entity (on which the section
+ * apply) has been created during post, hence the section has to be reloaded to
+ * consider its new eid, hence the two additional arguments `actualEid` and
+ * `creationEid`: `actualEid` is the eid of newly created top level entity and
+ * `creationEid` the fake eid that was given as form creation marker (e.g. A).
+ *
+ * You can still call this function with only the actual eid if you're not in
+ * such creation case.
+ */
+function reloadCtxComponentsSection(context, actualEid, creationEid) {
+    // in this case, actualEid is the eid of newly created top level entity and
+    // creationEid the fake eid given as form creation marker (e.g. A)
+    if (!creationEid) { creationEid = actualEid ; }
+    var $compsholder = $('#' + context + creationEid);
+    // reload the whole components section
+    $compsholder.children().each(function (index) {
+	// XXX this.id[:-len(eid)]
+	var compid = this.id.replace("_", ".").rstrip(creationEid);
+	var params = ajaxFuncArgs('render', null, 'ctxcomponents',
+				  compid, actualEid);
+	$(this).loadxhtml('json', params, null, 'swap', true);
+    });
+    $compsholder.attr('id', context + actualEid);
+}
+
+
+/**
+ * .. function:: reload(domid, registry, formparams, *render_args)
+ *
+ * `js_render` based reloading of views and components.
+ */
+function reload(domid, compid, registry, formparams  /* ... */) {
+    var ajaxArgs = ['render', formparams, registry, compid];
+    ajaxArgs = ajaxArgs.concat(cw.utils.sliceList(arguments, 4));
+    var params = ajaxFuncArgs.apply(null, ajaxArgs);
+    $('#'+domid).loadxhtml('json', params, null, 'swap');
+}
+
 /* DEPRECATED *****************************************************************/
 
 preprocessAjaxLoad = cw.utils.deprecatedFunction(

--- a/web/views/ajaxedit.py	Mon Jan 31 17:24:05 2011 +0100
+++ b/web/views/ajaxedit.py	Mon Jan 31 17:28:51 2011 +0100
@@ -22,9 +22,9 @@
 from cubicweb import role
 from cubicweb.view import View
 from cubicweb.selectors import match_form_params, match_kwargs
-from cubicweb.web.component import EditRelationMixIn
+from cubicweb.web import component, stdmsgs, formwidgets as fw
 
-class AddRelationView(EditRelationMixIn, View):
+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.
@@ -36,7 +36,7 @@
     cw_property_defs = {} # don't want to inherit this from Box
     expected_kwargs = form_params = ('rtype', 'target')
 
-    build_js = EditRelationMixIn.build_reload_js_call
+    build_js = component.EditRelationMixIn.build_reload_js_call
 
     def cell_call(self, row, col, rtype=None, target=None, etype=None):
         self.rtype = rtype or self._cw.form['rtype']
@@ -73,3 +73,41 @@
             self.pagination(self._cw, rset, w=self.w)
             return rset.entities()
         super(AddRelationView, self).unrelated_entities(self)
+
+
+def ajaxCompositeForm(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