In the ajax method Tapestry.Initializer.initAjaxLoader, the event on which trigger.observeAction operates needs to change

[MGelbana]

That's the portion I'm talking about:

/**

• Define JS initializer method for ajaxlaoder component.

• */
  Tapestry.Initializer.initAjaxLoader = function(params) {

  /** Observe zone-update */
  $(params.zone).observeAction(Tapestry.ZONE_UPDATED_EVENT, function() {
  $(params.loader).hide();
  });

  /**

  • Observe trigger process
    */
    var trigger = $(params.trigger);
    if (trigger.tagName == "FORM") {
    trigger.observeAction(Tapestry.FORM_PROCESS_SUBMIT_EVENT, function() {
    $(params.loader).show();
    });
    } else if (trigger.tagName == "A") {
    trigger.observeAction(Tapestry.ZONE_UPDATED_EVENT, function() {
    $(params.loader).show();
    });
    }
    };

    What used to happen is that when I first click the link, the back end method was called numerous times. Checking the JS console showed a blown stack of recursive calls. Debugging the JS code showed that clicking the link invoked a tapestry method called:
    Tapestry.waitForPage(event);

Which processes the following check:

if (Tapestry.pageLoaded)
return true;

I thought the page isn't loaded yet so this always returns true, which - I suppose - simulates a click on the link, which goes back in the same loop till the stack explodes as the page will never load faster than the JS call ! So I thought to trigger the event after the page is fully loaded. And that's what I have already done in the above code snippet.

[ccordenier]

Weird... In fact i think observeAction is not the right method to use here. I thought it was a placeholder for prototype observe method, but it seems that i shortcut the elements fire by Tapestry to convert them in ACTION_EVENT...

Finally i have used prototype observe method and it works quite good