Mercurial > urweb
annotate demo/more/expandable.ur @ 1211:1d4d65245dd3
About to try removing Select predicate
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Tue, 06 Apr 2010 13:59:16 -0400 |
| parents | 7facf72aaf0a |
| children |
| rev | line source |
|---|---|
| adamc@1025 | 1 con t ctx = source bool * xml ctx [] [] |
| adamc@1025 | 2 |
| adamc@1025 | 3 fun create [ctx] (x : xml ctx [] []) = |
| adamc@1025 | 4 s <- source False; |
| adamc@1025 | 5 return (s, x) |
| adamc@1025 | 6 |
| adamc@1025 | 7 fun expand [ctx] (t : t ctx) = |
| adamc@1025 | 8 set t.1 True |
| adamc@1025 | 9 |
| adamc@1025 | 10 fun collapse [ctx] (t : t ctx) = |
| adamc@1025 | 11 set t.1 False |
| adamc@1025 | 12 |
| adamc@1025 | 13 fun render [ctx] [[Body] ~ ctx] (t : t ([Body] ++ ctx)) = |
| adamc@1025 | 14 <xml><dyn signal={b <- signal t.1; |
| adamc@1025 | 15 return (if b then |
| adamc@1025 | 16 <xml> |
| adamc@1025 | 17 <button value="-" onclick={collapse t}/><br/> |
| adamc@1025 | 18 {t.2} |
| adamc@1025 | 19 </xml> |
| adamc@1025 | 20 else |
| adamc@1025 | 21 <xml> |
| adamc@1025 | 22 <button value="+" onclick={expand t}/><br/> |
| adamc@1025 | 23 </xml>)}/></xml> |