Mutually exclusive Xforms output

Alexander Žaťko wrote

Neil,

conditional hiding/display of groups was discussed here before - check  
the archives for more info but basic idea is to use XPath in the @ref  
of the xforms:group (or other "grouping" tags) tag.

A.

On 8.1.2009, at 23:24, ncrofts wrote:

>
> I'm trying to display a different set of controls on an XForms  
> application
> depending on whether or not a particular instance element has been  
> defined
> i.e. at any time I only want one of two mutually exclusive groups of
> controls displayed.
>
> If say I have an XForms instance as follows:
>
> <xforms:instance id="results-data">
> <results>
> <result/>
> </results>
> </xforms:instance>
>
> I can then  bind to the result element with something like the  
> following:
>
> <xforms:bind nodeset="instance('results-data')/result" relevant=". !
> = ''"/>
>
>
> This will mean that a group defined as follows will be displayed  
> provided
> the result element has some content, and not displayed if there is  
> no result
> element.
>
> <xforms:group ref="instance('results-data')/result">
> <p>There is a result so display this set of controls ... </p>
> </xforms:group>
>
>
> If however the result has not got any content, I would like to be  
> able to
> display a different group of controls.
>
>
> <xforms:group ref="instance('results-data')/result">
> <p>There is no result defined, so display a different set of controls
> ...</p>
> </xforms:group>
>
>
> I think I have missed something basic in my understanding of how  
> Xforms
> works as I just can't see an obvious way to do this. Please can  
> someone
> advise me how would this sort of behaviour be achieved using Xforms?
>
> Regards,
> Neil
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