Mercurial > urweb
view demo/more/grid1.ur @ 1767:1bbad32cb4a8
Implicit records of folders
author | Adam Chlipala <adam@chlipala.net> |
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date | Thu, 17 May 2012 16:22:05 -0400 |
parents | edf86cef0dba |
children |
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open Dbgrid table t1 : {Id : int, A : string} PRIMARY KEY Id sequence s table t : {Id : int, A : int, B : string, C : bool, D : int, E : option int, F : option int} PRIMARY KEY Id, CONSTRAINT Foreign FOREIGN KEY (D) REFERENCES t1(Id) ON DELETE CASCADE fun page (n, s) = return <xml>A = {[n]}, B = {[s]}</xml> open Make(struct structure F = Direct.Foreign(struct con nm = #Id val tab = t1 fun render r = r.A end) val tab = t con key = [Id = _] val raw = {Id = {New = nextval s, Inj = _}, A = {New = return 0, Inj = _}, B = {New = return "", Inj = _}, C = {New = return False, Inj = _}, D = {New = return 0, Inj = _}, E = {New = return None, Inj = _}, F = {New = return None, Inj = _}} val cols = {Id = Direct.readOnly [#Id] "Id" Direct.int, A = Direct.editable [#A] "A" Direct.int, B = Direct.editable [#B] "B" Direct.string, C = Direct.editable [#C] "C" Direct.bool, D = Direct.editable [#D] "D" F.meta, E = Direct.editable [#E] "E" (Direct.nullable Direct.int), F = Direct.editable [#F] "F" (Direct.nullable F.meta), DA = computed "2A" (fn r => 2 * r.A), Link = computedHtml "Link" (fn r => <xml><a link={page (r.A, r.B)}>Go</a></xml>)} val aggregates = {Dummy1 = {Initial = (), Step = fn _ _ => (), Display = fn _ => <xml/>}, Sum = {Initial = 0, Step = fn r n => r.A + n, Display = txt}, Dummy2 = {Initial = (), Step = fn _ _ => (), Display = fn _ => <xml/>}, And = {Initial = True, Step = fn r b => r.C && b, Display = txt}} val pageLength = Some 10 end) fun main () = grid <- grid; set (showSelection grid) True; return <xml> <head> <link rel="stylesheet" type="text/css" href="../../grid.css"/> </head> <body onload={sync grid}> {render grid} <hr/> <ccheckbox source={showSelection grid}/> Show selection<br/> Selection: <dyn signal={ls <- selection grid; return (List.mapX (fn r => <xml>{[r.Id]}; </xml>) ls)}/> </body> </xml>