Re: [webtier] JSF 2.0 composite components with method-valued attributes

From: Jim Driscoll <Jim.Driscoll_at_Sun.COM>
Date: Wed, 11 Feb 2009 15:21:28 -0800

Well, when I did the following blog,
http://weblogs.java.net/blog/driscoll/archive/2008/12/jsf_20_wiring_u_1.html

I had two attribute methods that weren't named "action" - they were
named move1to2 and such.

I haven't pored over the rest of your email, yet, but will when I have a
minute.

Jim

On 2/11/09 3:04 PM, webtier_at_javadesktop.org wrote:
> Hello,
>
> I wonder if method-expression passing through a composite component attribute is supposed to work. I just want be able to specify an "action" method which would be passed to a command button. Unfortunately, the code works only if the attribute has the name "action". And I wanted to get this method from a controller. Here's a code sample:
>
>
> <?xml version='1.0' encoding='UTF-8' ?>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <html xmlns="http://www.w3.org/1999/xhtml"
> xmlns:ui="http://java.sun.com/jsf/facelets"
> xmlns:c="http://java.sun.com/jsp/jstl/core"
> xmlns:f="http://java.sun.com/jsf/core"
> xmlns:h="http://java.sun.com/jsf/html"
> xmlns:composite="http://java.sun.com/jsf/composite">
>
> <composite:interface name="adjustableColumnHeader">
> <composite:attribute name="header" required="true" type="String" shortDescription="header to use"/>
> <composite:attribute name="action" method-signature="java.lang.String act()" targets="hidebutton"/>
> </composite:interface>
> <composite:implementation>
> <th>
> <h:panelGrid columns="2">
> <h:outputText styleClass="tableHeader" value="#{compositeComponent.attrs.header}"/>
> <h:commandButton id="hidebutton" value="hide"
> action="#{compositeComponent.attrs.action}"/>
> </h:panelGrid>
> </th>
> </composite:implementation>
> </html>
>
> it is used later like:
> <composite:interface name="adjustableColumnHeader">
> <composite:attribute name="header" required="true" type="String" shortDescription="header to use"/>
> <composite:attribute name="headerClass" required="false" type="String" shortDescription="header class to use"/>
> <composite:attribute name="alwaysShown" required="false" type="Boolean" default="false" shortDescription="if true the column cannot be hidden"/>
> <composite:attribute name="firstOne" required="false" type="Boolean" default="false" shortDescription="if true this is the first column, hide button is rendered at its he
> <composite:attribute name="action" method-signature="java.lang.String act()" targets="hidebutton"/>
>
> <composite:attribute name="tablebean" required="true" shortDescription="a controller">
> <composite:attribute name="shownItems" required="true" type="java.util.Map" shortDescription="map which lists shown items"/>
> 
>
> 
> <h:selectBooleanCheckbox rendered="#{not compositeComponent.attrs.alwaysShown}"
> value="#{compositeComponent.attrs.tablebean.checkboxes[compositeComponent.attrs.header]}"/>
> </h:panelGrid>
> </th>
> </composite:implementation>
>
> and of course then I cannot choose the name of the attribute.
>
> Also it's a bit strange Jim's controller example uses only attribute-properties and
> no attribute-methods. I guess turning switchlist example into a controller based one,
> as Ed originally suggested, would be a lot of clue here.
>
> Thanks a lot in advance!
> [Message sent by forum member 'nzinoviev' (nzinoviev)]
>
> http://forums.java.net/jive/thread.jspa?messageID=331385
>
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