[jboss-user] [JBoss Seam] - Help Facelets in seam are not recursive

Wed Dec 5 06:43:46 EST 2007

Facelets   NOT    RECURSIVE
As  I call a facelet indiectly  from an other facelet  the returned attributs 
are  different. This  leads  to impossible  interpretation of  the final Tag value 
and causes  facelets  using  <c:if  test="${arg}" to fail  depending on the recursive level 
where it is called.

Any  help is welcome 

More detailed :

  | 
  | as  I can produce  a facelet :
  | 
  | The  value  of "${action}"   is different  depending  on its  use 
  | Detected  by  TagHandler 
  | 
  | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  | <html>
  | <ui:composition xmlns="http://www.w3.org/1999/xhtml"
  |                 xmlns:c="http://java.sun.com/jstl/core"
  |                 xmlns:s="http://jboss.com/products/seam/taglib"
  |                 xmlns:ui="http://java.sun.com/jsf/facelets"
  |                 xmlns:f="http://java.sun.com/jsf/core"
  |                 xmlns:h="http://java.sun.com/jsf/html"
  |                 xmlns:rich="http://richfaces.org/rich"
  |                 xmlns:a4j="http://richfaces.org/a4j"> 
  | 
  |    <m:xxx tag="${action}">
  |    </m:xxx>       
  | </ui:composition>
  | 	THIS TEXT WILL BE REMOVED AS WELL
  | </html>
  | 
I'm  checking for the obtained  value  using   xxx as Taghandler 

  |  
  | 	   String Tag=((TagAttribute) tag).getValue(); // the value offered to the taglib
  | 	   String Tag2=((TagAttribute) tag).getValue(ctx);// the value offered from myapplication
  | 	   String TmpStripped=Tag.replaceAll("($\\{)|(\\#\\{)|(})", "");//just the  symbol
  | 	   String tmpResolved=Value(ctx,TmpStripped);//ve=ctx.getVariableMapper().resolveVariable(TmpStripped)
  | 	   log.info("tagAttribute "+ expression+ " Tag "+Tag+"/("+TmpStripped + ") rtn "+tmpResolved );//+" tag2=" + Tag2)
  | 
As I call the above facelet as 

  |   <facelet   action="${mymodule.value}">    in the  main thread  it offers 
  |   
  |             Tag="${mymodule.value}" ....   and  I suppose this  is correct
  | 
As I call the  above  facelet through an other facelet 

  | 
  |   <faceletGroup   act="${mymodule.value}">
  |  
with  FaceletGroup defined as

  | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  | <html>
  | <ui:composition xmlns="http://www.w3.org/1999/xhtml"
  |                 xmlns:c="http://java.sun.com/jstl/core"
  |                 xmlns:s="http://jboss.com/products/seam/taglib"
  |                 xmlns:ui="http://java.sun.com/jsf/facelets"
  |                 xmlns:f="http://java.sun.com/jsf/core"
  |                 xmlns:h="http://java.sun.com/jsf/html"
  |                 xmlns:rich="http://richfaces.org/rich"
  |                 xmlns:a4j="http://richfaces.org/a4j"> 
  | 
  |    
  |    <facelet   action="${act}"> 
  | </ui:composition>
  | 	THIS TEXT WILL BE REMOVED AS WELL
  | </html>
  | 
  | 
and I'm checking the taghandler  xxx again 
I'm  checking for the obtained  value  using   xxx as Taghandler 

  | 	   String Tag=((TagAttribute) tag).getValue(); // the value offered to the taglib
  | 	   String Tag2=((TagAttribute) tag).getValue(ctx);// the value offered from myapplication
  | 	   String TmpStripped=Tag.replaceAll("($\\{)|(\\#\\{)|(})", "");//just the  symbol
  | 	   String tmpResolved=Value(ctx,TmpStripped);//ve=ctx.getVariableMapper().resolveVariable(TmpStripped)
  | 	   log.info("tagAttribute "+ expression+ " Tag "+Tag+"/("+TmpStripped + ") rtn "+
  | 
I receive different  values 

  | 		Tag = "${act}"   //I receive the symbol name  instead  of the  content
  | 		act seams to be  defined as a variable in the variable mapper
  | 		and I can resolve Tag   stripping of "${}"  to  the correct value 
  | 
  | 		"${mymodule.value}"
  | 		
This  is highly  annoying since  the taghandler  needs 	to react differently 
dependent on  the recursive  level it is. This  is breaking down the  value 
of facelets.

Additionaly  the response is dependent upon  the content  defined  in the intermediate  
facelet. as we  used  ${act}, the TagHanler can not know what value was choisen, it could vary 
depending  on the  facelet grouping...

this value is ambigious since  I can have the argument act  and the a potential module act 
defined in my application. I would  not be  able  to distinguish  	

			between a module  called tag  or an intermediate value  called Tag

Is there a way to uniquely  resolve  the tag ?? ,
temporarly  I look for  ".({"  in the returned value, these characters  are  not  part 
of an xml attribute, but this does not solve all the  problems ....

any help apreciated 			

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