Rob Smith wrote: > Hi, > > I was hoping to use the :empty CSS3 selector in XXE to emulate the > behaviour of the Docbook 5 stylesheets when formatting empty "link" > elements. If the element contains text content, this should be displayed > as the link text. If the element is empty, the link URL should be > displayed instead. > > I tried using > > @namespace xlink "http://www.w3.org/1999/xlink";; > > link[xlink|href]:empty { > content: attr(xlink|href); > color: gray; > } > > With links in the form > > <link xlink:href="http://MySite.com"; /> > <link xlink:href="http://MySite.com";>My Site</link> > > neither link is matched, and I just get the default XXE styling with an > empty text node. If I remove the :empty selector then both links are > matched, and the content is replaced by the URL. > > The CSS3 spec says that "In terms of the DOM, only element nodes and > text nodes (including CDATA nodes and entity references) whose data has > a non-zero length must be considered as affecting emptiness", so empty > text content should allow a match. > > Am I right in thinking that XXE doesn't support the :empty selector on > elements where the content model includes text?
For XXE, <link xlink:href="http://MySite.com"; /> means: <link xlink:href="http://MySite.com";>EMPTY TEXT NODE HERE</link> But there is a bug in the implementation of ":empty" because, for XXE, an element containing an empty text node is *not* considered to be empty. Thanks for having found and reported this bug. It is fixed now, but you'll get the fix in next release. --- PS: Adding or removing the *text* contained to/from the link element will *not* cause the styled view of the link element to be automatically refreshed. This is not a bug but just a limitation. That is, you need to use Ctrl-L. Note that adding or removing child *elements* to/from the link element cause the the styled view of the link element to be automatically refreshed. That is, in this case, you *don't* need to use Ctrl-L.
