Dave you're right,
I was not clear
I'll try to explain better:

<s:iterator status="stat" value="list" >
 <s:checkbox label="checkbox label" name="checkboxName" value="checkboxValue"/>

  <s:if test="(#stat.index % 3)==0">
     insert breaking string
  </s:if>

Maurizio Cucchiara

2010/10/9 Dave Newton <davelnew...@gmail.com>:
> I think encapsulating this kind of behavior in a custom tag is why
> custom tags exist--and since the iteration is handled by the
> checkboxlist tag internally, using an iterator/etc. doesn't really
> work.
>
> Dave
>
> On Saturday, October 9, 2010, Maurizio Cucchiara
> <maurizio.cucchi...@gmail.com> wrote:
>> Do you need to insert a breaking string every 3 items?
>> I think this approach is too much expansive in term of time.
>> Furthermore, after that, you should deal with subcassing process.
>> You should have valid reasons for do that.
>> Why don't you simply use mod operator?:
>>
>> <s:iterator status="stat" value="{1,2,3,4,5}" >
>>    <s:if test="(#stat.index % 3)==0">
>>       insert breaking string
>>    </s:if>
>>    .....
>> </s:iterator>
>>
>>
>> Maurizio Cucchiara
>>
>>
>> 2010/10/9 Burton Rhodes <burtonrho...@gmail.com>:
>>> I am trying to override a struts tag template (specifically
>>> <s:checkboxlist>), and I can't figure out how to add a parameter to
>>> the tag.  I have successfully overridden the template by copying
>>> "checkboxlist.tld" to my template/simple directory and all works well.
>>>  Now I would like to add a parameter.  It appears that I need to
>>> override the the META-INF/struts-tags.tld file because I keep getting
>>> the error below.  However, using the same method as checkboxlist.tld,
>>> I copy a modified version of struts-tags.tld to my
>>> META-INF/struts-tags.tld directory.  However, I still get the same
>>> error below.  Not sure if I need to modify another file or if
>>> struts-tags.tld cannot be "overridden".  Anyone given this a try?
>>> Trying not to have to create a new custom tag since all I want is a
>>> simple modification to checkboxlist.tld.
>>>
>>> ------------ERROR--------------------
>>> /contact/contactCreate.jsp(286,6) PWC6131: Attribute breakCount
>>> invalid for tag checkboxlist according to TLD
>>>
>>> Caused by:
>>> org.apache.jasper.JasperException: /contact/contactCreate.jsp(286,6)
>>> PWC6131: Attribute breakCount invalid for tag checkboxlist according
>>> to TLD
>>> -------------------------------------------
>>>
>>> Tag with added parameter (breakCount):
>>>
>>> <s:checkboxlist
>>>        name="ownerIds"
>>>        list="%{activeAppUserList}"
>>>        listKey="appUserId"
>>>        listValue="nameInformal"
>>>        required="true"
>>>        breakCount="3"           <!-- New Parameter, will enter the
>>> breakString after every 3 items -->
>>>        breakString="<br/>"
>>> />
>>>
>>> Excerpt from modified "struts-tags.tld":
>>>  ....
>>>  <tag>
>>>    <description><![CDATA[Render a list of checkboxes]]></description>
>>>    <name>checkboxlist</name>
>>>    <tag-class>org.apache.struts2.views.jsp.ui.CheckboxListTag</tag-class>
>>>    <body-content>JSP</body-content>
>>>    <attribute>
>>>      <description><![CDATA[Set the html accesskey attribute on
>>> rendered html element]]></description>
>>>      <name>accesskey</name>
>>>      <required>false</required>
>>>      <rtexprvalue>false</rtexprvalue>
>>>    </attribute>
>>>    <attribute>
>>>      <description><![CDATA[Number of elements to display before
>>> inserting 'break' element.]]></description>
>>>      <name>breakCount</name>
>>>      <required>false</required>
>>>      <rtexprvalue>false</rtexprvalue>
>>>    </attribute>
>>>    <attribute>
>>>      <description><![CDATA[Used to override the default 'break'
>>> string. Default is <br>.]]></description>
>>>      <name>breakString</name>
>>>      <required>false</required>
>>>      <rtexprvalue>false</rtexprvalue>
>>>    </attribute>
>>>   ....
>>>
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