[ADD] support for 'domain' key in result of onchange handlers

bzr revid: xmo@openerp.com-20120120110543-29ebq5u0ghp32hkv

diff --cc addons/web/controllers/main.py
index 261d77c,df3163d..7f5b43b
--- 1/addons/web/controllers/main.py
--- 2/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@@ -838,6 -838,18 +838,36 @@@ class DataSet(openerpweb.Controller)
          return getattr(req.session.model(model), method)(*args, **kwargs)
  
      @openerpweb.jsonrequest
+     def onchange(self, req, model, method, args, context_id=None):
++        """ Support method for handling onchange calls: behaves much like call
++        with the following differences:
++
++        * Does not take a domain_id
++        * Is aware of the return value's structure, and will parse the domains
++          if needed in order to return either parsed literal domains (in JSON)
++          or non-literal domain instances, allowing those domains to be used
++          from JS
++
++        :param req:
++        :type req: web.common.http.JsonRequest
++        :param str model: object type on which to call the method
++        :param str method: name of the onchange handler method
++        :param list args: arguments to call the onchange handler with
++        :param int context_id: index of the context object in the list of
++                               arguments
++        :return: result of the onchange call with all domains parsed
++        """
+         result = self.call_common(req, model, method, args, context_id=context_id)
+         if 'domain' not in result:
+             return result
+ 
+         result['domain'] = dict(
+             (k, parse_domain(v, req.session))
+             for k, v in result['domain'].iteritems())
+ 
+         return result
+ 
+     @openerpweb.jsonrequest
      def call(self, req, model, method, args, domain_id=None, context_id=None):
          return self.call_common(req, model, method, args, domain_id, context_id)