JSF Component without own HTML element

Question

I am looking for a JSF 2.0 Component that is just an container for other components but do not produce own HTML elements.

My situation is that I have an (already styled) jsf-xhtml component page. Now I need to disable a lot of the rendering.

<ui:component>
    <h:panelGroup layout="block" rendered="#{not empty user.registrations}">...</>
    <h:panelGroup layout="block" rendered="#{not empty user.registrations}">...</>
    <h:panelGroup layout="block" rendered="#{not empty user.registrations}">...</>
    <h:panelGroup layout="block" rendered="#{not empty user.registrations}">...</>
</ui:component>

But I do not want to specify the rendered="#{not empty user.registrations}" fore times. Instead I want to wrapp it with some component like:

<ui:component>
    <xxxx  rendered="#{not empty user.registrations}">
        <h:panelGroup layout="block">...</>
        <h:panelGroup layout="block">...</>
        <h:panelGroup layout="block">...</>
        <h:panelGroup layout="block">...</>
    </xxxx>
</ui:component>

Because the page is already styled (and I fear that this is done in a fragile way) I need an jsf-component (xxxx) that does NOT produce own html elements like div or so. Does such an jsf-component exit?

Just remove `layout="block"`? – BalusC Jul 10 '12 at 18:39 — BalusC, Jul 10 '12 at 18:39

score 3 · Answer 1 · answered Jul 10 '12 at 14:30

3

If you are using primefaces then you have a simple solution:

use p:outputPanel.

If not, then you can also use h:panelGroup. This does not have any formatting of its own.

answered Jul 10 '12 at 14:30

score 1 · Accepted Answer · answered Jul 10 '12 at 14:13

1

You can use

<ui:fragment rendered="#{not empty user.registrations}">

http://javaserverfaces.java.net/nonav/docs/2.1/vdldocs/facelets/ui/fragment.html

answered Jul 10 '12 at 14:13

Adam

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This was the element I was looking for, anywaz this Question http://stackoverflow.com/q/3713468/280244 prevents me from using `ui:fragment` – Ralph Jul 10 '12 at 16:55

score 0 · Answer 3 · answered Jul 10 '12 at 12:30

0

Try this:

<c:if test="#{not empty user.registrations}">
    <h:panelGroup layout="block">...</>
    <h:panelGroup layout="block">...</>
    <h:panelGroup layout="block">...</>
    <h:panelGroup layout="block">...</>
</c:if>

or you can wrap your 4 <h:panelGroup> with another <h:panelGroup>:

<h:panelGroup rendered="#{not empty user.registrations}">
    <h:panelGroup layout="block">...</>
    <h:panelGroup layout="block">...</>
    <h:panelGroup layout="block">...</>
    <h:panelGroup layout="block">...</>
</h:panelGroup>

answered Jul 10 '12 at 12:30

Mr.J4mes

9,168
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I do not think that `c:if` is allowed in JSF 2.0 Facelets – Ralph Jul 10 '12 at 13:18
@Ralph: http://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense – BalusC Jul 10 '12 at 18:38

JSF Component without own HTML element

3 Answers3