Mercurial > urweb
annotate demo/more/checkGroup.ur @ 1205:7cd11380cdf1
WHERE-dependent checking
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Sun, 04 Apr 2010 17:18:41 -0400 |
| parents | 7facf72aaf0a |
| children |
| rev | line source |
|---|---|
| adamc@1025 | 1 con t ctx data = list (data * xml ctx [] [] * source bool) |
| adamc@1025 | 2 |
| adamc@1025 | 3 fun create [ctx] [data] (items : list (data * xml ctx [] [] * bool)) = |
| adamc@1025 | 4 List.mapM (fn (d, x, b) => s <- source b; return (d, x, s)) items |
| adamc@1025 | 5 |
| adamc@1025 | 6 fun render [ctx] [data] [[Body] ~ ctx] (t : t ([Body] ++ ctx) data) = |
| adamc@1025 | 7 List.mapX (fn (_, x, s) => <xml><ccheckbox source={s}/> {x}<br/></xml>) t |
| adamc@1025 | 8 |
| adamc@1025 | 9 fun selected [ctx] [data] (t : t ctx data) = |
| adamc@1025 | 10 List.foldlM (fn (d, _, s) ls => |
| adamc@1025 | 11 s <- signal s; |
| adamc@1025 | 12 return (if s then |
| adamc@1025 | 13 d :: ls |
| adamc@1025 | 14 else |
| adamc@1025 | 15 ls)) [] t |