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Posted to users@myfaces.apache.org by Walter Mourão <wa...@gmail.com> on 2008/02/01 12:40:15 UTC
Re: [Trinidad] Is there a way to have a custom JavaScript function be called when a validation error occurs?
Hi Richard,
I suppose you're not using the PPR API to show the "Loading..." message. If
so the message should appear only after the client validation. I suggest you
start using the PPR start/stop events. From the developer's guide:
Monitoring AJAX requests
If you want to be notified when the client is busy waiting for an AJAX
response, add a "state change listener" to the request queue:
TrPage.getInstance().getRequestQueue().addStateChangeListener(myCallback);
Your callback will be passed a single parameter, which will be either
TrRequestQueue.STATE_READY or TrRequestQueue.STATE_BUSY, depending on the
current state of the request queue. The statusIndicator component uses
exactly this mechanism to know when to start and stop spinning its
indicator. You can optionally pass a second parameter to
addStateChangeListener() for the "this" you want active when your callback
is notified.
Sample code:
<script type="text/javascript">
// <![CDATA[
function myCallback(state){
if(state == TrRequestQueue.STATE_BUSY) {
//START OF PPR
} else if(state == TrRequestQueue.STATE_READY){
//END OF PPR
}
}
TrPage.getInstance
().getRequestQueue().addStateChangeListener(myCallback);
// ]]>
</script>
I hope it helps.
--
Walter Mourão
http://arcadian.com.br
http://waltermourao.com.br
2008/1/31, Richard Yee <ri...@gmail.com>:
>
> Everyone,
> I am showing a "Loading...." message when the user submits a form in my
> MyFaces/Trinidad application by having an onclick handler set the 'display'
> style to be 'inline' for my a tr:outputText tag. This works fine unless
> there is a validation error on the page for a required field. In this case,
> the JavaScript code for Trinidad detects the empty field and the page is not
> submitted. My "Loading..." message is still displayed however. Is there a
> way to hook into the Trinidad JavaScript validation code so that I can have
> one of my JavaScript functions set the display style back to none in this
> case?
>
> Thanks,
>
> Richard
>
>
Re: [Trinidad] Is there a way to have a custom JavaScript function
be called when a validation error occurs?
Posted by Richard Yee <ry...@cruzio.com>.
Walter,
Thanks. I'll try it out and let you know.
-Richard
Walter Mourão wrote:
> Hi Richard,
> I suppose you're not using the PPR API to show the "Loading..."
> message. If so the message should appear only after the client
> validation. I suggest you start using the PPR start/stop events. From
> the developer's guide:
>
>
> Monitoring AJAX requests
>
> If you want to be notified when the client is busy waiting for an AJAX
> response, add a "state change listener" to the request queue:
>
> TrPage.getInstance().getRequestQueue().addStateChangeListener(myCallback);
>
> Your callback will be passed a single parameter, which will be either
> TrRequestQueue.STATE_READY or TrRequestQueue.STATE_BUSY, depending on
> the current state of the request queue. The statusIndicator component
> uses exactly this mechanism to know when to start and stop spinning
> its indicator. You can optionally pass a second parameter to
> addStateChangeListener() for the "this" you want active when your
> callback is notified.
>
> Sample code:
>
> <script type="text/javascript">
> // <![CDATA[
> function myCallback(state){
> if(state == TrRequestQueue.STATE_BUSY) {
> //START OF PPR
> } else if(state == TrRequestQueue.STATE_READY){
> //END OF PPR
> }
> }
>
>
> TrPage.getInstance().getRequestQueue().addStateChangeListener(myCallback);
> // ]]>
> </script>
>
> I hope it helps.
>
>
> --
> Walter Mourão
> http://arcadian.com.br
> http://waltermourao.com.br
>
>
> 2008/1/31, Richard Yee <richard.k.yee@gmail.com
> <ma...@gmail.com>>:
>
> Everyone,
> I am showing a "Loading...." message when the user submits a form
> in my MyFaces/Trinidad application by having an onclick
> handler set the 'display' style to be 'inline' for my a
> tr:outputText tag. This works fine unless there is a validation
> error on the page for a required field. In this case, the
> JavaScript code for Trinidad detects the empty field and the page
> is not submitted. My "Loading..." message is still displayed
> however. Is there a way to hook into the Trinidad JavaScript
> validation code so that I can have one of my JavaScript functions
> set the display style back to none in this case?
>
> Thanks,
>
> Richard
>
>
>
>
>