Registration example again: method binding without component

[dkane]

Hello
Please help me to understand the following code in Registration example :

register.xhtml uses RegisterAction component annotated as "register", e.g. :

<s:decorate id="verifyDecorate" template="edit.xhtml">
<ui:define name="label">Verify Password:</ui:define>
<h:inputSecret id="verify" value="#{register.verify}" required="true"/>
</s:decorate>

RegisterAction.java also has method invalid() :

public void invalid()
 {
 facesMessages.add("Please try again");
 }

And, edit.xhtml contains code :

<s:label styleClass="label #{invalid?'errors':''}">
 <ui:insert name="label"/>
 <s:span styleClass="required" rendered="#{required}">*</s:span>
 </s:label>

I don't understand which components "#{invalid}" and "#{required}" refers to in edit.html. Or these are some global variables outside of components, how do I know more about them then ?

Thank you.

[pmuir]

#{invalid} and #{required} are variables available inside s:decorate, and are booleans. required evaluates to true if you have set the decorated component required, and invalid evaluates to true if a validation error occurs.

[dkane]

#{invalid} and #{required} are variables available inside s:decorate, and are booleans. required evaluates to true if you have set the decorated component required, and invalid evaluates to true if a validation error occurs.

Could you please point to documentation where these variables are described? I can't find that in Seam reference. It contains examples with these variables, but not full list of variables with descriptions. Thanks !

[pmuir]

I just updated to the Seam JSF Controls chapter with a newer example and this info.