- From: Marcos Caceres <w3c@marcosc.com>
- Date: Wed, 5 Oct 2011 10:14:05 +0200
- To: public-webapps <public-webapps@w3.org>
Would it be possible to add something to DOM4 to allow one to find out what language (xml:lang) was inherited from up the chain, if any?
Use cases:
1. I need to find elements of a particular type/name that are in a particular language (in tree order), so that I can extract that information to display to a user.
2. I need to check what the language of an element is (if any), without walking up the tree to look for an xml:lang attribute. Walking the tree is expensive, specially when XML says that xml:lang value is inherited by default.
(my motivation is making it simpler to implement Widget's i18n model, which relies on xml:lang's inheritance propagating through an XML document: having something to access the XML values above would make the implementation easier).
Just of the top of my head:
<foo>
<bar xml:lang="en"/>
<bar xml:lang="en-us">
<baz xml:lang="">
</bar>
</foo>
//using BCP 47 [lookup] algorithm
var listOfElements = document.getElementsByLang("en-us");
listOfElements[1].lang == "en";
listOfElements[0].lang == "en-us";
[lookup]
http://tools.ietf.org/html/bcp47#page-2-12
--
Marcos Caceres
Received on Wednesday, 5 October 2011 08:14:37 UTC