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Include sub-element inside JSF 2.0 component

Answer 1

A:

You have to send the content as parameter:

<?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"&gt;

    <html
        xmlns="http://www.w3.org/1999/xhtml"
        xmlns:ui="http://java.sun.com/jsf/facelets"
        xmlns:composite="http://java.sun.com/jsf/composite"&gt;

    <composite:interface>
         <composite:attribute name="content"/>
    </composite:interface>

    <composite:implementation>
        <div style="border: 1px solid black;">
             <h:outputText value="#{cc.attrs.content}" escape="false"/>
        </div>
    </composite:implementation>

</html>

and in your code:

<box:box content="<p>Hello world!</p>" />

I added the escape="false" since you are using HTML tags inside the EL expression.

Read more about composite elements in David Geary’s article

Odelya 2010-08-13 08:11:25

Yes this would be one way to do that but it's very ugly design. Also, what if I have a longer section of XHTML/JSF code that I want to use as sub-element? Passing the content as string attribute is unconvenient. Instead, the style I tried (using `<ui:insert />`) should work, as lined in http://www.packtpub.com/article/creating-composition-components-in-jsf-2.0 (look at the chapter "Passing sub-elements to composition components"). This same approach is also covered in book JSF 2 APIs and JBoss Seam. However, in my tests it fails.

Tuukka Mustonen 2010-08-13 10:58:40

Answer 2

+3 A:

Ok I figured it out. You should use <composite:insertChildren /> instead as in:

<?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"&gt;
<html
    xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:composite="http://java.sun.com/jsf/composite"&gt;

<composite:interface>
</composite:interface>

<composite:implementation>
    <div style="border: 1px solid black;">
        <composite:insertChildren />
    </div>
</composite:implementation>

</html>

This works.

Tuukka Mustonen 2010-08-13 11:33:36

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Include sub-element inside JSF 2.0 component

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