How not to set an attribute of a component inside a composite component if it is empty?

Question

I have a h:graphicImage in a composite component like this:

Answer 1

You can conditionally add attributes via <c:if><f:attribute>.

<h:graphicImage ...>
    <c:if test="#{not empty cc.attrs.height}"><f:attribute name="height" value="#{cc.attrs.height}" /></c:if>
    <c:if test="#{not empty cc.attrs.width}"><f:attribute name="width" value="#{cc.attrs.width}" /></c:if>
</h:graphicImage>

See also:

• JSTL in JSF2 Facelets... makes sense?