Re: Re: Adding a javascript event handler to a widget

Hi Dorneles,

Thanks for your reply.  Here are my thoughts on how HTML/XML attributes 
should be handled in AT.

If the attributes property is currently a placeholder for some desired 
functionality, perhaps it could be used to allow *any* HTML/XML 
attribute to be generated by the widget.  My proposal is to allow the 
attributes property of the widget to be passed as a dictionary to the 
generator, as in the following example...

schema = BaseSchema + Schema((
     StringField('Field_ID',
                     widget=StringWidget(label='some_label ',

attributes={'onFocus': 'select()', 'onChange': 'someJSfunction()', 
'anyXMLattribute': 'anyXMLattributeValue'},

description='some_description'),
               ),

The flexibility of this approach may even allow TAL statements to be 
added to widgets.  Does this sound reasonable?

  - Kamal

On Aug 9, 2004, at 2:28 PM, Dorneles Treméa wrote:

> Hi Kamal,
>
>> How do I add a javascript event handler to a widget?  For example, 
>> how would I add the HTML attribute onFocus="select()" to a 
>> StringWidget?  My suspicion is to use the attributes property of the 
>> widget, but I am unable to find any documentation or usage examples 
>> regarding the attributes property of Archetype widgets.  Any help is 
>> much appreciated.
>
> currently there are only some rough ideas sleeping in some
> minds around the world about the best approach for JS events
> (onclick, onfocus, onchange, ...) 
>
> A new property on widgets sounds reasonable.
>
> I suggest you write your thoughts, so we can got consensus
> about the idea and effectively implement it on AT.
>
> Regards,
>
> -- 
>
> Dorneles Treméa
> Caxias do Sul - RS - Brasil
> +55 54 9114 9312 - UIN: 2413568
> X3ng Web Technology <http://www.x3ng.com.br>
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