Re: xforms:upload updating two parts of the model

Hi Erik,

I don't think so, unfortunately.

The instances are *separate* running DOMs from the main document where 
event listeners would be expressed, and their is no way with XML events to 
indicate that you would like to listen for something to happen in another 
document.

Actually, you should send that along as an XML Events 2 suggestion to 
www-html-editor 

Cheers,
John M. Boyer, Ph.D.
Senior Technical Staff Member
Lotus Forms Architect and Researcher
Chair, W3C Forms Working Group
Workplace, Portal and Collaboration Software
IBM Victoria Software Lab
E-Mail: boyerj@ca.ibm.com 

Blog: http://www.ibm.com/developerworks/blogs/page/JohnBoyer
Blog RSS feed: 
http://www.ibm.com/developerworks/blogs/rss/JohnBoyer?flavor=rssdw





Erik Bruchez <ebruchez@orbeon.com> 
Sent by: www-forms-request@w3.org
02/26/2008 05:29 PM

To
www-forms@w3.org
cc

Subject
Re: xforms:upload updating two parts of the model







Couldn't one register a listener for DOM Mutation Events? Does any 
XForms implementation do this?

-Erik

On Feb 26, 2008, at 3:43 AM, Mark Birbeck wrote:

>
> Hi John,
>
>> Not sure, but I think you may have suggested that an xforms-value- 
>> changed
>> (XVC) will happen on the filename child element of an upload.
>> Just in case that's what you meant, the current spec does not 
>> support that
>> because the ref used in filename is not a UI binding.  Only full- 
>> blown form
>> controls receive events from the model corresponding to their UI 
>> bindings.
>>
>> It may work in an implementation that treats every ref as a UI 
>> binding, but
>> then you have odd stuff happening like XVC events going to setvalue 
>> and such.
>
> No...I'm definitely *not* saying that XVC applies to anything other
> than a form control.
>
> And that's exactly the problem!
>
> It means that for authors to register a handler that will perform some
> action whenever a particular node has changed, they have to create a
> redundant form control:
>
>  <style>
>    .xvc-event-handler { display: none; }
>  </style>
>
>  <xf:output ref="node-to-watch" class="xvc-event-handler">
>    <xf:action ev:event="xforms-value-changed">
>      ...
>    </xf;action>
>  </xf;output>
>
> Best regards,
>
> Mark
>
> -- 
>  Mark Birbeck
>
>  mark.birbeck@x-port.net | +44 (0) 20 7689 9232
>  http://www.x-port.net | http://internet-apps.blogspot.com
>
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