How to create a composite of existing components in JSF? -

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i'd know if it's possible compose own component (or call widget, object).

i mean, instead of (for example) using h:panelgroup , h:outputlabel inside it, make own h:panelmarkzzz, composition of panelgroup , outputlabel.

is possible on jsf?

yes, it's possible create composition of existing components that.

kickoff example:

/resources/foo/group.xhtml

<!doctype html> <html xmlns="http://www.w3.org/1999/xhtml"     xmlns:h="http://xmlns.jcp.org/jsf/html"     xmlns:cc="http://xmlns.jcp.org/jsf/composite">     <cc:interface>         <cc:attribute name="label" type="java.lang.string" required="true" />     </cc:interface>     <cc:implementation>          <h:panelgroup>              <h:outputlabel value="#{cc.attrs.label}" />              <cc:insertchildren />          </h:panelgroup>     </cc:implementation> </html>

/test.xhtml

<!doctype html> <html xmlns="http://www.w3.org/1999/xhtml"      xmlns:h="http://xmlns.jcp.org/jsf/html"      xmlns:foo="http://xmlns.jcp.org/jsf/composite/foo">     <h:head>         <title>test</title>     </h:head>     <h:body>         <foo:group label="label value">             <h:outputtext value="this appear after label inside panelgroup" />         </foo:group>     </h:body> </html>

the /foo folder name free taste , can reference in xml namespace http://xmlns.jcp.org/jsf/composite/xxx. xhtml filename tag name.

that said, composite components have performance implications , should used when functional requirement not achievable using simple include or tagfile. in specific case, you'd better use tagfile instead. composite component worthy when need <cc:interface componenttype="...">.

see also:


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