i18n language override menu
---------------------------

                 Key: FOR-934
                 URL: http://issues.apache.org/jira/browse/FOR-934
             Project: Forrest
          Issue Type: Improvement
          Components: Dispatcher (aka views), Internationalisation (i18n)
    Affects Versions: 0.8-dev
            Reporter: Sjur N. Moshagen


Attached is a dispatcher contract with support files. It will return a list of 
alternative languages available for a given document. The list is of the form:

<!--+ |start language list +-->
<span>
<a href="?locale=en">en</a>
</span>
<span>
<a href="?locale=fi">fi</a>
</span>
<span>
<a href="?locale=nb">nb</a>
</span>
<span class="selected">se</span>
<span>
<a href="?locale=smj">smj</a>
</span>
<!--+ |end language list +-->

It handles filenames following this scheme (convention is already established 
for Forrest):

document.XY.extension (XY = locale/language of document)
document.extension (fallback document)

If there is a fallback document, the contract will try to look inside the 
document to see if it can find an @xml:lang or @lang attribute to associate a 
language with the fallback document.

The contract returns a list of available languages, including the one being 
displayed. The displayed language is marked with @class="selected" in the 
output html.

If there is only one document available (=no alternating languages), the 
contract only returns three comments (start, end, and a comment stating that 
there's no alternative).

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