--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demo/more/dbgrid.urs	Tue Sep 08 07:48:57 2009 -0400
@@ -0,0 +1,93 @@
+con rawMeta = fn t :: Type =>
+                 {New : transaction t,
+                  Inj : sql_injectable t}
+
+con colMeta' = fn (row :: {Type}) (t :: Type) =>
+                  {Header : string,
+                   Project : $row -> transaction t,
+                   Update : $row -> t -> transaction ($row),
+                   Display : t -> xbody,
+                   Edit : t -> xbody,
+                   Validate : t -> signal bool}
+
+con colMeta = fn (row :: {Type}) (global_t :: (Type * Type)) =>
+                 {Initialize : transaction global_t.1,
+                  Handlers : global_t.1 -> colMeta' row global_t.2}
+
+structure Direct : sig
+    con meta = fn global_actual_input :: (Type * Type * Type) =>
+                  {Initialize : transaction global_actual_input.1,
+                   Handlers : global_actual_input.1
+                              -> {Display : global_actual_input.3 -> xbody,
+                                  Edit : global_actual_input.3 -> xbody,
+                                  Initialize : global_actual_input.2 -> transaction global_actual_input.3,
+                                  Parse : global_actual_input.3 -> signal (option global_actual_input.2)}}
+
+    con editableState :: (Type * Type * Type) -> (Type * Type)
+    val editable : ts ::: (Type * Type * Type) -> rest ::: {Type}
+                   -> nm :: Name -> [[nm] ~ rest] => string -> meta ts
+                                                     -> colMeta ([nm = ts.2] ++ rest)
+                                                                (editableState ts)
+
+    con readOnlyState :: (Type * Type * Type) -> (Type * Type)
+    val readOnly : ts ::: (Type * Type * Type) -> rest ::: {Type}
+                   -> nm :: Name -> [[nm] ~ rest] => string -> meta ts
+                                                     -> colMeta ([nm = ts.2] ++ rest)
+                                                                (readOnlyState ts)
+
+    type intGlobal
+    type intInput
+    val int : meta (intGlobal, int, intInput)
+
+    type stringGlobal
+    type stringInput
+    val string : meta (stringGlobal, string, stringInput)
+
+    type boolGlobal
+    type boolInput
+    val bool : meta (boolGlobal, bool, boolInput)
+
+    functor Foreign (M : sig
+                         con row :: {Type}
+                         con t :: Type
+                         val show_t : show t
+                         val read_t : read t
+                         val eq_t : eq t
+                         val inj_t : sql_injectable t
+                         con nm :: Name
+                         constraint [nm] ~ row
+                         table tab : ([nm = t] ++ row)
+                         val render : $([nm = t] ++ row) -> string
+                     end) : sig
+        con global :: Type
+        con input :: Type
+        val meta : meta (global, M.t, input)
+    end
+end
+
+con computedState :: (Type * Type)
+val computed : row ::: {Type} -> t ::: Type -> show t
+               -> string -> ($row -> t) -> colMeta row computedState
+val computedHtml : row ::: {Type} -> string -> ($row -> xbody) -> colMeta row computedState
+
+functor Make(M : sig
+                 con key :: {Type}
+                 con row :: {Type}
+                 constraint key ~ row
+                 table tab : (key ++ row)
+
+                 val raw : $(map rawMeta (key ++ row))
+
+                 con cols :: {(Type * Type)}
+                 val cols : $(map (colMeta (key ++ row)) cols)
+
+                 val keyFolder : folder key
+                 val rowFolder : folder row
+                 val colsFolder : folder cols
+             end) : sig
+    type grid
+
+    val grid : transaction grid
+    val sync : grid -> transaction unit
+    val render : grid -> xbody
+end