Based on the earlier discussion on this list, I've pushed some new
support for embedded CSS style code, to the public Mercurial repo:
http://hg.impredicative.com/urweb
There is some new documentation in the manual and in the types of new
basis.urs functions, but here's the quick summary:
You should now be able to write 'class' and 'style' attribute values
just as in standard HTML; that is, as string literals with normal HTML
syntax. Class names will need to resolve to Ur/Web identifiers, and I
haven't put in support for all CSS syntax yet. Rather, I chose what
seems like a reasonable, safe subset (e.g., no support for quoted
strings or character escaping), and I will consider adding more upon
request.
The old 'dynClass' HTML pseudo-attribute remains, for specifying a
[signal] value that lets the class of a tag vary reactively. There is
now also 'dynStyle', whose meaning you can probably guess!
To get the compiler to desugar standard CSS syntax for you, you can also
pass string literals to the pseudo-functions [CLASS] and [STYLE]. (It
is intentional that these aren't _real_ functions that you could call at
runtime; that could allow scary injection attacks.)
In preparation for building a library to interface with Twitter's
Bootstrap CSS library, I also added the option to use .urp directives like:
rewrite style Bootstrap/* [-]
to render all CSS class names with hyphens instead of underscores.
This was the last feature I wanted to add before the next Ur/Web
release, which I hope to make in the next few days. So, bug reports
will be appreciated!
_______________________________________________
Ur mailing list
[email protected]
http://www.impredicative.com/cgi-bin/mailman/listinfo/ur
