Initial form for paper assignment

1 files changed, 15 insertions, 0 deletions

diff --git a/demo/more/checkGroup.ur b/demo/more/checkGroup.ur
new file mode 100644
index 00000000..ab1cc781
--- /dev/null
+++ b/demo/more/checkGroup.ur
@@ -0,0 +1,15 @@
+con t ctx data = list (data * xml ctx [] [] * source bool)
+
+fun create [ctx] [data] (items : list (data * xml ctx [] [] * bool)) =
+    List.mapM (fn (d, x, b) => s <- source b; return (d, x, s)) items
+
+fun render [ctx] [data] [[Body] ~ ctx] (t : t ([Body] ++ ctx) data) =
+    List.mapX (fn (_, x, s) => <xml><ccheckbox source={s}/> {x}<br/></xml>) t
+
+fun selected [ctx] [data] (t : t ctx data) =
+    List.foldlM (fn (d, _, s) ls =>
+                    s <- signal s;
+                    return (if s then
+                                d :: ls
+                            else
+                                ls)) [] t