Enabling/disabling trigger - what is best practice

Alessandro Vernet wrote

Hank,

As mentioned by Ryan, you can use the <xforms:bind> 'relevant'
attribute if you want to hide the trigger. Use the 'readonly'
attribute if you just want to gray out the trigger.

Alex

On 11/30/06, Hank Ratzesberger <hankr@crustal.ucsb.edu> wrote:
> Probably a basic XForms issue, but I don't understand
> how to enable/disable a trigger.
>
> For example, I want to page through a list, and disable
> the Next and Prev buttons at the end/beginning.
>
> The "Wizard with Switch" begins with a grayed Previous
> button, but it is bound to an element with empty content
> and it is not changed dynamically.
>
> If I know I am at the end of my list, how do I gray a
> Next button ?
>
> (caveat, I'm editing this down and I don't know if valid)
>
> <model>
>
>  <instance id="control">
>     <control xmlns="">
>       <num-items>100</num-items>
>       <start>1</start>
>       <howmany>10</howmany>
>     </control>
>  </instance>
>
> </model>
>
> ...............
>
> <group ref="instance('control')">
>
>   <trigger relevant="start &gt;= (howmany + 1)">
>     <label>Prev</label>
>     <action ev:event="DOMActivate">
>       <setvalue ref="start" value="start - howmany"/>
>      
>     </action>
> </trigger>
>
> <trigger relevant="(start + howmany) &lt;= num-items">
>   <label>Next</label>
>   <action ev:event="DOMActivate">
>     <setvalue ref="start" value="start + howmany"/>
>    
>   </action>
> </trigger>
>
> </xforms:group>
>
> Thanks for any tips,
> Hank
>
> Hank Ratzesberger
> NEES Programmer
> Institute for Crustal Studies
> University of California, Santa Barbara
> 805.893.8042
> 805.893.8649 (fax)
>
>
>
>
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Hi

      I am displaying trigger (edit buttons) in xforms:repeat. i want to
hide the particular edit button like when user is not equal to admin. 
i put a condition in bind tag with relevant attribute.after  i given this
bind id to trigger. then i am getting all buttons to hide. but i want to
hide particular button

how can i do it. can you please give me suggestion


Thanks & Regards
Ramesh k


Alessandro  Vernet wrote:
  

Hank,

As mentioned by Ryan, you can use the <xforms:bind> 'relevant'
attribute if you want to hide the trigger. Use the 'readonly'
attribute if you just want to gray out the trigger.

Alex

On 11/30/06, Hank Ratzesberger [hidden email] wrote:
    

Probably a basic XForms issue, but I don't understand
how to enable/disable a trigger.

For example, I want to page through a list, and disable
the Next and Prev buttons at the end/beginning.

The "Wizard with Switch" begins with a grayed Previous
button, but it is bound to an element with empty content
and it is not changed dynamically.

If I know I am at the end of my list, how do I gray a
Next button ?

(caveat, I'm editing this down and I don't know if valid)

<model>

 <instance id="control">
    <control xmlns="">
      <num-items>100</num-items>
      <start>1</start>
      <howmany>10</howmany>
    </control>
 </instance>

</model>

...............

<group ref="instance('control')">

  <trigger relevant="start &gt;= (howmany + 1)">
    <label>Prev</label>
    <action ev:event="DOMActivate">
      <setvalue ref="start" value="start - howmany"/>
      <!-- send a submit to update an instance... -->
    </action>
</trigger>

<trigger relevant="(start + howmany) &lt;= num-items">
  <label>Next</label>
  <action ev:event="DOMActivate">
    <setvalue ref="start" value="start + howmany"/>
    <!-- also send submit to update list instance -->
  </action>
</trigger>

</xforms:group>

Thanks for any tips,
Hank

Hank Ratzesberger
NEES Programmer
Institute for Crustal Studies
University of California, Santa Barbara
805.893.8042
805.893.8649 (fax)




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