Re: T5: how to update zone on dom load

[Kalle Korhonen <ka...@gmail.com>]

This is an old thread and there are better ways to construct event
links than manually crafting them
(ComponentResources.createXXXLink...). However, if you just want it
"both ways" - you've got some zones and ajax actionlinks but also
might want to update them via Javascript, here's a simple way to do
it:
		renderSupport.addScript("Event.observe(window, 'load', function()
{$('myaction').simulate('click')});");

Where myaction is the id of an actionlink. Note that there are two
things that further complicate the situation: the script needs to be
executed after Tapestry initialization (this is where the
Event.observe comes in) and that Element.fire is for non-native
browser events. Prototype doesn't have have a built-in cross-browser
way to simulate native events (dispatchEvent in Firefox etc...), but I
was able to find this great extension for just that purpose:
http://github.com/kangax/protolicious/blob/master/event.simulate.js.
You need to load simulate.js on your page and off you go firing native
events!

Kalle


On Thu, Nov 27, 2008 at 5:40 AM, britske <gb...@gmail.com> wrote:
>
> Ok I simplified my use-case and decided to try and call the javascript
> function from a button instead of on dom-loaded (parhaps something there is
> messing with it). Moreover I discovered that I mistakinly assumed that I
> needed to include the t:zone as parameter to the url. Moreover I changed the
> ajax-get to a post so it is exactly in line with the request performed
> through the actionlink.
>
> so :
> new Ajax.Request('/thepage.refreshzone?t:zone=zone1;t:ac=/id-1-66590/', {
> method:'get' });
> gets:
> new Ajax.Request('/thepage.refreshzone?:ac=/id-1-66590/', { method:'post'
> });
>
> now the method onActionFromRefreshZone is correctly called but the returned
> component (a subclass of AbstractTab) is not rendered. The strange thing is
> that as far as I can tell the callstack is exactly the same as when called
> with an actionlink (in which case the component is rendered)
> For instance, in both cases abstractTab.setupRender() is called, etc.
>
> public AbstractTab onActionFromRefreshZone() {
>  nrOfReqs ++;
>  if (!request.isXHR()) {
>        return null;
>  }
>
>  return curTab;
> }
>
> Anyone have any clue why this might be happening?
>
>
> britske wrote:
>>
>> Hi,
>>
>> I've created a zone which get's a couple of updates from various external
>> websites. The zone initally (on page load) contains some local info, but
>> needs to be dynamically extends with the sources extracted from these
>> websites. I want to call a server-side method (onActionFromRefreshZone)
>> which updates this zone (and starts fetching the info from the external
>> websites) on the dom-loaded event.
>>
>> The zone is in place and I checked that it works with an actionlink:
>>  # update
>>
>> However as said I want to call the method onActionFromRefreshZone  on
>> dom-loaded.
>> I already have the javascript method in place which is called on this
>> event.However I have no clue how to call the method in a Asynchrnous way.
>> I tried including the url of the above actionlink as such:
>>
>> function functionWhichIsCalledOnDomLoaded(){
>>       new Ajax.Request('/thepage.refreshzone?t:zone=zone1;t:ac=/id-1-66590/', {
>> method:'get' });
>> }
>>
>> but this doens't work.
>> Somehow I'm thinking this isn't the correct way anyhow and that there
>> should be a more elegant way / more T5-way to call a server-side method
>> asynchronously.
>>
>> Thanks,
>> Geert-Jan
>>
>
> --
> View this message in context: http://n2.nabble.com/T5%3A-how-to-update-zone-on-dom-load-tp1584917p1585109.html
> Sent from the Tapestry Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org