[Jakarta-tapestry Wiki] Update of "CheckingForRequiredValidator" by ScottWalter

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The following page has been changed by ScottWalter:
http://wiki.apache.org/jakarta-tapestry/CheckingForRequiredValidator

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  }
  }}}
  
+ However, if you are using the new {{{Validation}}} model of Tapestry 4.0 you 
will want to do this
+ {{{
+ public void writeSuffix(IMarkupWriter writer, IRequestCycle cycle, 
IFormComponent component, IValidator validator) {
+               ValidatorsBinding vb = (ValidatorsBinding) 
component.getBinding("validators");
+               Collection collection = (Collection) vb.getObject();
+               for(Iterator it = collection.iterator();it.hasNext();){
+                   Validator validatorObject = (Validator) it.next();
+                   if(validatorObject instanceof Required) {
+                         writer.printRaw("&nbsp");
+                         writer.begin("span");
+                         writer.attribute("class", "required-marker");
+                         writer.beginEmpty("img");
+                         writer.attribute("src","images/required.jpg");
+                         writer.attribute("alt","required field");
+                         writer.attribute("align","middle");
+                         writer.end();
+ 
+                           break;
+                   }
+               }
+ }
+ 
+ }}}
+ 

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