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From Sylvain Wallez <sylv...@apache.org>
Subject Re: disabling widgets
Date Mon, 05 Apr 2004 13:40:04 GMT
Vadim Gritsenko wrote:

> Sylvain Wallez wrote:
>
>> Now, as I mentioned already [1], I started using the generator approach
>> to form templates, using the implementation of "wt:" statements using
>> JXMacro provided by Chris [2]. And this approach is very powerful, as it
>> allows complex conditional form layout without requiring the
>> introduction of yet-another-control-structure-markup in the "wt:" 
>> namespace.
>>
>> Introducing the widget states would allow these conditions to be
>> computed with the form's own state rather than using some separate flow
>> values.
>>
>> So, I propose the following changes to Cocoon forms:
>> - add a state to widgets (enabled/disabled/hidden).
>>  
>>
>
> Assuming this state will be available during binding, as well as in 
> form... +1. But, this will require some kind of "wt:" control markup 
> anyway... Given simple example:
> <table><tr><td><wt:widget-label id="x"/></td><td><wt:widget

> id="x"/></td></tr></table>
>
> There is a need to disable whole table, it's not enough to take out 
> widget only.


This is exactly why a generator approach is needed :

<jx:choose>
  <jx:when test="${currentWidget.getChild("x").isDisabled()}">
    <table>
      <tr>
        <td><wt:widget-label id="x"/></td>
        <td><wt:widget id="x"/></td>
       </tr>
    </table>
  </jx:when>
  <jx:otherwise>
    This data is currently not available.
  </jx:otherwise>
</jx:choose>

Sylvain

-- 
Sylvain Wallez                                  Anyware Technologies
http://www.apache.org/~sylvain           http://www.anyware-tech.com
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