Did you try the "willUpdate" event? ( http://tapestry.apache.org/5.4/coffeescript/events.html#section-16 )
On Thu, Mar 20, 2014 at 1:28 PM, Martin Nagl <mn...@mtbiker.sk> wrote: > In T5.4, the event "t5:zone:did-update" fires only after zone has been > updated, which is too late to add overlay to the zone. > > I need to add the zone overlay just after user clicks on a ajax-enabled > EventLink / ActionLink (including paging and sorting links in Grid), or > just after user submits an ajax-enabled Form - before server starts > processing the request (which may take a few seconds). > > In T5.3, one could attach to Tapestry.TRIGGER_ZONE_UPDATE_EVENT, which was > being fired before request was sent to server, so it was suitable for this > case. In T5.4, looking at module "t5/core/events" I found no event which > would fire before an ajax request for zone update is sent to server. > > Maybe a different approach is needed? >