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editableTable.ur
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open Bootstrap3
type permission = {Add : bool,
Delete : bool,
Modify : bool}
functor Make(M : sig
con fs :: {(Type * Type * Type)}
val widgets : $(map Widget.t' fs)
table tab : $(map fst3 fs)
val fl : folder fs
val eqs : $(map eq (map fst3 fs))
val ords : $(map ord (map fst3 fs))
val injs : $(map sql_injectable (map fst3 fs))
val labels : $(map (fn _ => string) fs)
val permission : transaction permission
val onAdd : $(map fst3 fs) -> transaction unit
val onDelete : $(map fst3 fs) -> transaction unit
val onModify : {Old : $(map fst3 fs), New : $(map fst3 fs)} -> transaction unit
end) = struct
open M
con data = $(map fst3 fs)
con state = $(map snd3 fs)
con config = $(map thd3 fs)
val eq_data : eq data = @@Record.eq [map fst3 fs] eqs (@@Folder.mp [fst3] [_] fl)
val ord_data : ord data = @@Record.ord [map fst3 fs] ords (@@Folder.mp [fst3] [_] fl)
datatype action =
ADD of data
| DEL of data
| MOD of { Old : data, New : data }
table listeners : { Channel : channel action }
type row = { Editing : source (option state),
Content : data }
type a = { Config : config,
Perm : permission,
Rows : source (list row),
ToAdd : state,
Channel : channel action }
val freshRow = @Monad.mapR2 _ [Widget.t'] [thd3] [snd3]
(fn [nm ::_] [p ::_] (w : Widget.t' p) => @Widget.create w) fl widgets
val initRow = @Monad.mapR3 _ [Widget.t'] [thd3] [fst3] [snd3]
(fn [nm ::_] [p ::_] (w : Widget.t' p) => @Widget.initialize w)
fl widgets
val rowOut = @Monad.mapR2 _ [Widget.t'] [snd3] [fst3]
(fn [nm ::_] [p ::_] (w : Widget.t' p) (v : snd3 p) =>
current (@Widget.value w v))
fl widgets
val create =
perm <- permission;
config <- @Monad.mapR _ [Widget.t'] [thd3]
(fn [nm ::_] [p ::_] (w : Widget.t' p) => @Widget.configure w) fl widgets;
toAdd <- freshRow config;
rows <- List.mapQueryM (SELECT *
FROM tab
ORDER BY {{{@Sql.order_by (@@Folder.mp [fst3] [_] fl)
(@@Sql.some_fields [#Tab] [map fst3 fs] [[]] [[]] [[]] [[]] ! !
(@@Folder.mp [fst3] [_] fl)) sql_asc}}})
(fn r =>
editing <- source None;
return {Editing = editing,
Content = r.Tab});
rows <- source rows;
chan <- channel;
dml (INSERT INTO listeners(Channel) VALUES ({[chan]}));
return {Config = config,
Perm = perm,
Rows = rows,
ToAdd = toAdd,
Channel = chan}
fun onload a =
let
fun loop () =
msg <- recv a.Channel;
(case msg of
ADD d =>
rows <- get a.Rows;
editing <- source None;
set a.Rows (List.sort (fn a b => a.Content > b.Content)
({Editing = editing,
Content = d}
:: rows))
| DEL d =>
rows <- get a.Rows;
set a.Rows (List.filter (fn a => a.Content <> d) rows)
| MOD d =>
rows <- get a.Rows;
editing <- source None;
set a.Rows (List.sort (fn a b => a.Content > b.Content)
(List.mp (fn a =>
if a.Content = d.Old then
{Editing = editing,
Content = d.New}
else
a) rows)));
loop ()
in
spawn (loop ())
end
fun add r =
perm <- permission;
(if perm.Add then
return ()
else
error <xml>Don't have permission to add row</xml>);
@@Sql.easy_insert [map fst3 fs] [_] injs (@@Folder.mp [fst3] [_] fl) tab r;
queryI1 (SELECT * FROM listeners)
(fn x => send x.Channel (ADD r));
onAdd r
fun del r =
perm <- permission;
(if perm.Delete then
return ()
else
error <xml>Don't have permission to delete row</xml>);
dml (DELETE FROM tab
WHERE {@@Sql.easy_where [#T] [map fst3 fs] [[]] [[]] [[]] [[]] ! !
injs (@@Folder.mp [fst3] [_] fl) r});
queryI1 (SELECT * FROM listeners)
(fn x => send x.Channel (DEL r));
onDelete r
fun mod r =
perm <- permission;
(if perm.Modify then
return ()
else
error <xml>Don't have permission to modify row</xml>);
dml (@@update [[]] [_] [map fst3 fs] !
(@map2 [fn p => sql_injectable p.1] [fst3] [fn p => sql_exp _ _ _ p.1]
(fn [p] => @sql_inject)
fl injs r.New)
tab
(@@Sql.easy_where [#T] [map fst3 fs] [[]] [[]] [[]] [[]] ! !
injs (@@Folder.mp [fst3] [_] fl) r.Old));
queryI1 (SELECT * FROM listeners)
(fn x => send x.Channel (MOD r));
onModify r
fun render ctx a = <xml>
<table class="bs3-table table-striped">
<tr>
<th/>
{@mapX [fn _ => string] [tr]
(fn [nm ::_] [p ::_] [r ::_] [[nm] ~ r] (s : string) => <xml><th>{[s]}</th></xml>)
fl labels}
</tr>
<dyn signal={rs <- signal a.Rows;
return (List.mapX (fn r => <xml><tr>
<dyn signal={ed <- signal r.Editing;
return (case ed of
None => <xml>
<td>
{if a.Perm.Delete then
Ui.modalButton ctx (CLASS "btn glyphicon glyphicon-remove")
<xml/>
(return (Ui.modal
(rpc (del r.Content))
<xml>Are you sure you want to delete this row?</xml>
<xml/>
<xml>Yes!</xml>))
else
<xml/>}
{if a.Perm.Modify then <xml>
<button class="btn glyphicon glyphicon-pencil"
onclick={fn _ =>
fr <- initRow a.Config r.Content;
set r.Editing (Some fr)}/>
</xml> else
<xml/>}
</td>
{@mapX2 [Widget.t'] [fst3] [_]
(fn [nm ::_] [p ::_] [r ::_] [[nm] ~ r]
(w : Widget.t' p) (v : fst3 p) =>
<xml><td>{@Widget.asValue w v}</td></xml>)
fl widgets r.Content}
</xml>
| Some ws => <xml>
<td>
<button class="btn glyphicon glyphicon-ok"
onclick={fn _ =>
vs <- rowOut ws;
set r.Editing None;
rpc (mod {Old = r.Content,
New = vs})}/>
<button class="btn glyphicon glyphicon-remove"
onclick={fn _ => set r.Editing None}/>
</td>
{@mapX2 [Widget.t'] [snd3] [_]
(fn [nm ::_] [p ::_] [r ::_] [[nm] ~ r]
(w : Widget.t' p) (v : snd3 p) =>
<xml><td>{@Widget.asWidget w v None}</td></xml>)
fl widgets ws}
</xml>)}/>
</tr></xml>) rs)}/>
{if a.Perm.Add then
<xml>
<tr/>
<tr>
<th><button value="Add:"
class="btn btn-primary"
onclick={fn _ =>
r <- rowOut a.ToAdd;
rpc (add r)}/></th>
{@mapX2 [Widget.t'] [snd3] [_]
(fn [nm ::_] [p ::_] [r ::_] [[nm] ~ r] (w : Widget.t' p) (v : snd3 p) =>
<xml><td>{@Widget.asWidget w v None}</td></xml>)
fl widgets a.ToAdd}
</tr>
</xml>
else
<xml/>}
</table>
</xml>
val ui = {Create = create,
Onload = onload,
Render = render}
end