From 7560a81cd846d47d3d4d642cc470e3b09c5e1826 Mon Sep 17 00:00:00 2001
From: Adam Chlipala <adamc@hcoop.net>
Date: Sun, 1 Nov 2009 14:26:20 -0500
Subject: Initial form for paper assignment

---
 demo/more/checkGroup.ur | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 demo/more/checkGroup.ur

(limited to 'demo/more/checkGroup.ur')

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
-- 
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