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meetingGrid.ur
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meetingGrid.ur
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style table_fixedheader
style meeting_default
style meeting_selected
style meeting_conflict
style meeting_movable
open Bootstrap
open Tooltip
functor Make(M : sig
con homeKey1 :: Name
type homeKeyT
con homeKeyR :: {Type}
constraint [homeKey1] ~ homeKeyR
con homeKey = [homeKey1 = homeKeyT] ++ homeKeyR
con homeOffice :: {Type}
con homeHardConst :: {Type}
con homeSoftConst :: {Type}
con homeRest :: {Type}
constraint homeKey ~ homeRest
constraint (homeKey ++ homeRest) ~ homeOffice
constraint (homeKey ++ homeRest ++ homeOffice) ~ homeSoftConst
constraint (homeKey ++ homeRest ++ homeOffice ++ homeSoftConst) ~ homeHardConst
con homeKeyName :: Name
con homeOtherConstraints :: {{Unit}}
constraint [homeKeyName] ~ homeOtherConstraints
val home : sql_table (homeKey ++ homeOffice ++ homeSoftConst ++ homeHardConst ++ homeRest) ([homeKeyName = map (fn _ => ()) homeKey] ++ homeOtherConstraints)
val homeInj : $(map sql_injectable_prim homeKey)
val homeKeyFl : folder homeKey
val homeKeyShow : show $homeKey
val homeKeyRead : read $homeKey
val homeKeyEq : $(map eq homeKey)
val homeKeyOrd : $(map ord homeKey)
val officeFl : folder homeOffice
val officeRender : $homeKey -> $homeOffice -> xbody
val homeSoftConstFl : folder homeSoftConst
val homeSoftConstInj : $(map sql_injectable homeSoftConst)
val homeSoftConst : $homeSoftConst
val homeHardConstFl : folder homeHardConst
val homeHardConstInj : $(map sql_injectable homeHardConst)
val homeHardConst : $homeHardConst
con awayKey1 :: Name
type awayKeyT
con awayKeyR :: {Type}
constraint [awayKey1] ~ awayKeyR
con awayKey = [awayKey1 = awayKeyT] ++ awayKeyR
con awayConst :: {Type}
con awayFilter :: {Type}
con awayRest :: {Type}
constraint awayKey ~ awayRest
constraint (awayKey ++ awayRest) ~ awayConst
constraint (awayKey ++ awayRest ++ awayConst) ~ awayFilter
con awayKeyName :: Name
con awayOtherConstraints :: {{Unit}}
constraint [awayKeyName] ~ awayOtherConstraints
val away : sql_table (awayKey ++ awayConst ++ awayFilter ++ awayRest) ([awayKeyName = map (fn _ => ()) awayKey] ++ awayOtherConstraints)
val awayInj : $(map sql_injectable_prim awayKey)
val awayKeyFl : folder awayKey
val awayKeyShow : show $awayKey
val awayKeyRead : read $awayKey
val awayKeyEq : $(map eq awayKey)
val awayKeyOrd : $(map ord awayKey)
val awayConstFl : folder awayConst
val awayConstInj : $(map sql_injectable awayConst)
val awayConst : $awayConst
val awayFilterFl : folder awayFilter
con timeKey1 :: Name
type timeKeyT
con timeKeyR :: {Type}
constraint [timeKey1] ~ timeKeyR
con timeKey = [timeKey1 = timeKeyT] ++ timeKeyR
con timeRest :: {Type}
constraint timeKey ~ timeRest
con timeKeyName :: Name
con timeOtherConstraints :: {{Unit}}
constraint [timeKeyName] ~ timeOtherConstraints
val time : sql_table (timeKey ++ timeRest) ([timeKeyName = map (fn _ => ()) timeKey] ++ timeOtherConstraints)
val timeInj : $(map sql_injectable_prim timeKey)
val timeKeyFl : folder timeKey
val timeKeyShow : show $timeKey
val timeKeyRead : read $timeKey
val timeKeyEq : $(map eq timeKey)
constraint homeKey ~ awayKey
constraint (homeKey ++ awayKey) ~ timeKey
constraint homeOffice ~ timeKey
constraint (homeKey ++ awayKey) ~ [ByHome, Channel]
val amHome : transaction (option $homeKey)
val amAway : transaction (option $awayKey)
val fixed : transaction (list {When : $timeKey, Descr : string})
val timeOrd : ord $timeKey
val isNowReadOnly : transaction bool
end) = struct
open M
val homeKeyEq : eq $homeKey = @@Record.eq [homeKey] homeKeyEq homeKeyFl
val awayKeyEq : eq $awayKey = @@Record.eq [awayKey] awayKeyEq awayKeyFl
val timeKeyEq : eq $timeKey = @@Record.eq [timeKey] timeKeyEq timeKeyFl
val homeKeyOrd : ord $homeKey = @@Record.ord [homeKey] homeKeyOrd homeKeyFl
val awayKeyOrd : ord $awayKey = @@Record.ord [awayKey] awayKeyOrd awayKeyFl
table meeting : (homeKey ++ timeKey ++ awayKey)
PRIMARY KEY {{@primary_key [homeKey1] [homeKeyR ++ timeKey ++ awayKey] ! !
(homeInj ++ timeInj ++ awayInj)}},
{{one_constraint [#Home] (@Sql.easy_foreign ! ! ! ! ! ! homeKeyFl home)}},
{{one_constraint [#Away] (@Sql.easy_foreign ! ! ! ! ! ! awayKeyFl away)}},
{{one_constraint [#Time] (@Sql.easy_foreign ! ! ! ! ! ! timeKeyFl time)}}
con all = homeKey ++ awayKey ++ timeKey
val allFl = @Folder.concat ! homeKeyFl (@Folder.concat ! timeKeyFl awayKeyFl)
view meetings = {@Sql.viewOf allFl meeting}
datatype operation = Add | Del
type action = { Operation : operation, Home : $homeKey, Away : $awayKey, Time : $timeKey }
table globalListeners : { Channel : channel action }
type home_action = { Operation : operation, Away : $awayKey, Time : $timeKey, Place : option unit }
table homeListeners : ([Channel = channel home_action] ++ homeKey)
{{one_constraint [#Home] (@Sql.easy_foreign ! ! ! ! ! ! homeKeyFl home)}}
type away_action = { Operation : operation, Home : $homeKey, Time : $timeKey, Place : option $homeOffice }
table awayListeners : ([Channel = channel away_action] ++ awayKey)
{{one_constraint [#Away] (@Sql.easy_foreign ! ! ! ! ! ! awayKeyFl away)}}
table preference : ([ByHome = bool] ++ homeKey ++ awayKey)
PRIMARY KEY {{@primary_key [#ByHome] [homeKey ++ awayKey] ! !
({ByHome = _} ++ homeInj ++ awayInj)}},
{{one_constraint [#Home] (@Sql.easy_foreign ! ! ! ! ! ! homeKeyFl home)}},
{{one_constraint [#Away] (@Sql.easy_foreign ! ! ! ! ! ! awayKeyFl away)}}
table homeUnavailable : (homeKey ++ timeKey)
PRIMARY KEY {{@primary_key [homeKey1] [homeKeyR ++ timeKey] ! !
(homeInj ++ timeInj)}},
{{one_constraint [#Home] (@Sql.easy_foreign ! ! ! ! ! ! homeKeyFl home)}},
{{one_constraint [#Time] (@Sql.easy_foreign ! ! ! ! ! ! timeKeyFl time)}}
table awayUnavailable : (awayKey ++ timeKey)
PRIMARY KEY {{@primary_key [awayKey1] [awayKeyR ++ timeKey] ! !
(awayInj ++ timeInj)}},
{{one_constraint [#Away] (@Sql.easy_foreign ! ! ! ! ! ! awayKeyFl away)}},
{{one_constraint [#Time] (@Sql.easy_foreign ! ! ! ! ! ! timeKeyFl time)}}
val allInj = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim allFl (homeInj ++ awayInj ++ timeInj)
val homeInj' = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim homeKeyFl homeInj
val awayInj' = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim awayKeyFl awayInj
val timeInj' = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim timeKeyFl timeInj
fun addMeeting r =
office <- oneRow1 (SELECT home.{{homeOffice}}
FROM home
WHERE {@@Sql.easy_where [#Home] [homeKey] [_] [_] [_] [_]
! ! homeInj' homeKeyFl (r --- awayKey --- timeKey)});
@@Sql.easy_insert [all] [_] allInj allFl meeting r;
queryI1 (SELECT * FROM globalListeners)
(fn i => send i.Channel {Operation = Add,
Home = r --- awayKey --- timeKey,
Away = r --- homeKey --- timeKey,
Time = r --- awayKey --- homeKey});
queryI1 (SELECT * FROM homeListeners
WHERE {@@Sql.easy_where [#HomeListeners] [homeKey] [_] [_] [_] [_]
! ! homeInj' homeKeyFl (r --- awayKey --- timeKey)})
(fn i => send i.Channel {Operation = Add,
Away = r --- homeKey --- timeKey,
Time = r --- awayKey --- homeKey,
Place = Some ()});
queryI1 (SELECT * FROM awayListeners
WHERE {@@Sql.easy_where [#AwayListeners] [awayKey] [_] [_] [_] [_]
! ! awayInj' awayKeyFl (r --- homeKey --- timeKey)})
(fn i => send i.Channel {Operation = Add,
Home = r --- awayKey --- timeKey,
Time = r --- awayKey --- homeKey,
Place = Some office})
fun delMeeting r =
dml (DELETE FROM meeting
WHERE {@@Sql.easy_where [#T] [all] [_] [_] [_] [_]
! ! allInj allFl r});
queryI1 (SELECT * FROM globalListeners)
(fn i => send i.Channel {Operation = Del,
Home = r --- awayKey --- timeKey,
Away = r --- homeKey --- timeKey,
Time = r --- awayKey --- homeKey});
queryI1 (SELECT * FROM homeListeners
WHERE {@@Sql.easy_where [#HomeListeners] [homeKey] [_] [_] [_] [_]
! ! homeInj' homeKeyFl (r --- awayKey --- timeKey)})
(fn i => send i.Channel {Operation = Del,
Away = r --- homeKey --- timeKey,
Time = r --- awayKey --- homeKey,
Place = None});
queryI1 (SELECT * FROM awayListeners
WHERE {@@Sql.easy_where [#AwayListeners] [awayKey] [_] [_] [_] [_]
! ! awayInj' awayKeyFl (r --- homeKey --- timeKey)})
(fn i => send i.Channel {Operation = Del,
Home = r --- awayKey --- timeKey,
Time = r --- awayKey --- homeKey,
Place = None})
(* This functor helps us abstract over the two directions.
* We want symmetric functionality for each. *)
functor Side(N : sig
con usKey :: {Type}
con usOffice :: {Type}
con usSoftConst :: {Type}
con usHardConst :: {Type}
con usOther :: {Type}
con themKey :: {Type}
con themOffice :: {Type}
con themSoftConst :: {Type}
con themHardConst :: {Type}
con themOther :: {Type}
(* Note: the "office" fields here do double-duty as "filter" fields in the eventual invocation! *)
constraint usKey ~ usOther
constraint (usKey ++ usOther) ~ usOffice
constraint (usKey ++ usOther ++ usOffice) ~ usSoftConst
constraint (usKey ++ usOther ++ usOffice ++ usSoftConst) ~ usHardConst
constraint themKey ~ themOther
constraint (themKey ++ themOther) ~ themOffice
constraint (themKey ++ themOther ++ themOffice) ~ themSoftConst
constraint (themKey ++ themOther ++ themOffice ++ themSoftConst) ~ themHardConst
constraint usKey ~ themKey
constraint (usKey ++ themKey) ~ timeKey
constraint themOffice ~ timeKey
constraint (usKey ++ themKey) ~ [ByHome]
val localized : { Home : $homeKey, Away : $awayKey }
-> { Us : $usKey, Them : $themKey }
val canonical : { Us : $usKey, Them : $themKey }
-> { Home : $homeKey, Away : $awayKey }
table us : (usKey ++ usOffice ++ usSoftConst ++ usHardConst ++ usOther)
table them : (themKey ++ themOffice ++ themSoftConst ++ themHardConst ++ themOther)
table preference : ([ByHome = bool] ++ usKey ++ themKey)
table unavailable : (usKey ++ timeKey)
table unavailableThem : (themKey ++ timeKey)
table meeting : (usKey ++ themKey ++ timeKey)
constraint usKey ~ [Channel]
type usChannel
val usChannel : usChannel
-> { Operation : operation,
Them : $themKey,
Time : $timeKey,
Place : option $themOffice }
table usListeners : ([Channel = channel usChannel] ++ usKey)
val usFl : folder usKey
val themFl : folder themKey
val usInj : $(map sql_injectable_prim usKey)
val themInj : $(map sql_injectable_prim themKey)
val usShow : show $usKey
val themShow : show $themKey
val themRead : read $themKey
val usEq : eq $usKey
val usOrd : ord $usKey
val themEq : eq $themKey
val usOfficeFl : folder usOffice
val usOfficeRender : $usKey -> $usOffice -> xbody
val themOfficeRender : $themKey -> $themOffice -> xbody
val usSoftConstFl : folder usSoftConst
val usSoftConstInj : $(map sql_injectable usSoftConst)
val usSoftConst : $usSoftConst
val usHardConstFl : folder usHardConst
val usHardConstInj : $(map sql_injectable usHardConst)
val usHardConst : $usHardConst
val themSoftConstFl : folder themSoftConst
val themSoftConstInj : $(map sql_injectable themSoftConst)
val themSoftConst : $themSoftConst
val themHardConstFl : folder themHardConst
val themHardConstInj : $(map sql_injectable themHardConst)
val themHardConst : $themHardConst
val byHome : bool
val amUs : transaction (option $usKey)
end) : sig
(* Display a full, editable grid of all meetings (rows: aways, columns: times).
* The signal function can be used to control which rows are displayed. *)
structure FullGrid : Ui.S where type input = $(N.usKey ++ N.usOffice) -> signal bool
(* Display a read-only record of all records for an away. *)
structure One : Ui.S where type input = $N.usKey
(* Inputing meeting preferences for an away *)
structure Prefs : Ui.S where type input = $N.usKey
(* Inputing schedule constraints for an away *)
structure Unavail : Ui.S where type input = $N.usKey
(* Delete all of this person's meetings. *)
val deleteFor : $N.usKey -> transaction unit
(* Display who asked to meet with this person. *)
structure WhoAskedFor : Ui.S where type input = $N.usKey
end = struct
open N
con all = usKey ++ themKey ++ timeKey
val allFl = @Folder.concat ! usFl (@Folder.concat ! timeKeyFl themFl)
val allInj = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim allFl (usInj ++ themInj ++ timeInj)
val usInj' = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim usFl usInj
val themInj' = @mp [sql_injectable_prim] [sql_injectable] @@sql_prim themFl themInj
fun canonicalized r =
let
val r' = canonical {Us = r --- timeKey --- themKey,
Them = r --- timeKey --- usKey}
in
r --- usKey --- themKey ++ r'.Home ++ r'.Away
end
val addMeeting r = addMeeting (canonicalized r)
val delMeeting r = delMeeting (canonicalized r)
structure FullGrid = struct
type themSet = list ($themKey * int (* number of meetings this them has at this time *))
type timeMap = list ($timeKey * bool (* available? *) * themSet)
type usMap = list ($usKey * $usOffice * timeMap * list $themKey (* requested but not scheduled yet *))
type themMap = list ($themKey * list $timeKey (* unavailable times *))
type input = _
type a = _
val create =
allTimes <- queryL1 (SELECT time.{{timeKey}}
FROM time
ORDER BY {{{@Sql.order_by timeKeyFl
(@Sql.some_fields [#Time] [timeKey] ! ! timeKeyFl)
sql_asc}}});
let
(* A bit of a little dance to initialize the meeting states,
* including blank entries for unused us/time pairs *)
fun initMap (acc : usMap)
(rows : list {Meeting : $all, ThisTime : option int})
(uses : list $(usKey ++ usOffice))
(times : list $timeKey)
(unavails : list $(usKey ++ timeKey))
(themsDone : themSet)
(timesDone : timeMap)
: usMap =
case uses of
[] =>
(* Finished with all uses. Done! *)
List.rev acc
| us :: uses' =>
case times of
[] =>
(* Finished with one us. Move to next. *)
initMap ((us --- usOffice, us --- usKey, List.rev timesDone, []) :: acc)
rows
uses'
allTimes
unavails
[]
[]
| time :: times' =>
(* Check if the next row is about this time. *)
case rows of
[] =>
(* Nope. *)
let
val (available, unavails') =
case unavails of
[] => (True, [])
| r :: unavails' =>
if r --- timeKey = us --- usOffice
&& @eq timeKeyEq (r --- usKey) time then
(False, unavails')
else
(True, unavails)
in
initMap acc
[]
uses
times'
unavails'
[]
((time, available, List.rev themsDone) :: timesDone)
end
| {Meeting = row, ThisTime = tt} :: rows' =>
if row --- themKey --- timeKey < us --- usOffice then
(* We've encountered a meeting for an invalid us. Skip it! *)
initMap acc rows' uses times unavails themsDone timesDone
else if row --- themKey --- timeKey = us --- usOffice
&& @eq timeKeyEq (row --- usKey --- themKey) time then
(* Aha, a match! Record this meeting. *)
initMap acc
rows'
uses
times
unavails
((row --- usKey --- timeKey, Option.get 1 tt) :: themsDone)
timesDone
else
(* No match. On to next time. *)
let
val (available, unavails') =
case unavails of
[] => (True, [])
| r :: unavails' =>
if r --- timeKey = us --- usOffice && @eq timeKeyEq (r --- usKey) time then
(False, unavails')
else
(True, unavails)
in
initMap acc
rows
uses
times'
unavails'
[]
((time, available, List.rev themsDone) :: timesDone)
end
fun mergeThemsWithUnavails (thems : list $themKey) (unavails : list $(themKey ++ timeKey)) (times : list $timeKey) (acc : themMap) : themMap =
case thems of
[] => acc
| them :: thems' =>
case unavails of
[] => List.revAppend (List.mp (fn them' => (them', [])) thems')
((them, times) :: acc)
| r :: unavails' =>
let
val them' = r --- timeKey
val tm = r --- themKey
in
if them' = them then
mergeThemsWithUnavails thems unavails' (tm :: times) acc
else
mergeThemsWithUnavails thems' unavails [] ((them, times) :: acc)
end
in
uses <- queryL1 (SELECT us.{{usKey}}, us.{{usOffice}}
FROM us
WHERE {@@Sql.easy_where [#Us] [usHardConst ++ usSoftConst]
[usKey ++ usOffice ++ usOther] [_] [_] [_]
! ! (usHardConstInj ++ usSoftConstInj)
(@Folder.concat ! usHardConstFl usSoftConstFl)
(usHardConst ++ usSoftConst)}
ORDER BY {{{@Sql.order_by usFl
(@Sql.some_fields [#Us] [usKey] ! ! usFl)
sql_asc}}});
thems <- queryL1 (SELECT them.{{themKey}}
FROM them
WHERE {@@Sql.easy_where [#Them] [themHardConst ++ themSoftConst]
[themKey ++ themOffice ++ themOther] [_] [_] [_]
! ! (themHardConstInj ++ themSoftConstInj)
(@Folder.concat ! themHardConstFl themSoftConstFl)
(themHardConst ++ themSoftConst)}
ORDER BY {{{@Sql.order_by themFl
(@Sql.some_fields [#Them] [themKey] ! ! themFl)
sql_desc}}});
unavailsThem <- queryL1 (SELECT unavailableThem.{{themKey}}, unavailableThem.{{timeKey}}
FROM unavailableThem
ORDER BY {{{@Sql.order_by (@Folder.concat ! themFl timeKeyFl)
(@Sql.some_fields [#UnavailableThem] [themKey ++ timeKey] ! !
(@Folder.concat ! themFl timeKeyFl))
sql_desc}}});
unavails <- queryL1 (SELECT unavailable.{{usKey}}, unavailable.{{timeKey}}
FROM unavailable JOIN us
ON {@@Sql.easy_join [#Unavailable] [#Us]
[usKey] [timeKey] [usOffice ++ usSoftConst ++ usHardConst ++ usOther]
[_] [_] [_] ! ! ! ! usFl}
WHERE {@@Sql.easy_where [#Us] [usHardConst ++ usSoftConst]
[usKey ++ usOffice ++ usOther] [_] [_] [_]
! ! (usHardConstInj ++ usSoftConstInj)
(@Folder.concat ! usHardConstFl usSoftConstFl)
(usHardConst ++ usSoftConst)}
ORDER BY {{{@Sql.order_by (@Folder.concat ! usFl timeKeyFl)
(@Sql.some_fields [#Unavailable] [usKey ++ timeKey] ! !
(@Folder.concat ! usFl timeKeyFl))
sql_asc}}});
meetings <- queryL (SELECT meeting.{{usKey}}, meeting.{{timeKey}}, meeting.{{themKey}},
(SELECT COUNT( * )
FROM meeting AS ByThem
WHERE {@@Sql.easy_join [#ByThem] [#Meeting]
[themKey] [usKey ++ timeKey] [usKey ++ timeKey]
[_] [_] [_] ! ! ! ! themFl}
AND {@@Sql.easy_join [#ByThem] [#Meeting]
[timeKey] [usKey ++ themKey] [usKey ++ themKey]
[_] [_] [_] ! ! ! ! timeKeyFl}) AS ThisTime
FROM meeting
ORDER BY {{{@Sql.order_by allFl
(@Sql.some_fields [#Meeting] [all] ! ! allFl)
sql_asc}}});
meetings <- List.mapM (fn (us, off, tms, _) =>
tms' <- List.mapM (fn (tm, avail, ths) =>
ths <- source ths;
return (tm, avail, ths)) tms;
requested <- queryL1 (SELECT preference.{{themKey}}
FROM preference
WHERE {@@Sql.easy_where [#Preference] [usKey] [_] [_] [_] [_]
! ! usInj' usFl us}
AND preference.ByHome = {[byHome]}
ORDER BY {{{@Sql.order_by themFl
(@Sql.some_fields [#Preference] [themKey] ! ! themFl)
sql_asc}}});
return (us, off, tms', requested))
(initMap []
meetings
uses
allTimes
unavails
[]
[]);
thems <- return (mergeThemsWithUnavails thems unavailsThem [] []);
chan <- channel;
dml (INSERT INTO globalListeners (Channel) VALUES ({[chan]}));
mf <- source None;
mt <- source None;
ro <- isNowReadOnly;
return {Thems = thems, Times = allTimes, Meetings = meetings,
Channel = chan, MovingFrom = mf, MovingTo = mt,
ReadOnly = ro}
end
val ensureUser =
user <- amUs;
case user of
None => error <xml>Must be authenticated to access this page</xml>
| Some us' => return ()
val ensureWritable =
ro <- isNowReadOnly;
if ro then
error <xml>Changes to the schedule have been disabled</xml>
else
return ()
fun schedule r =
ensureUser;
ensureWritable;
alreadyScheduled <- oneRowE1 (SELECT COUNT( * ) > 0
FROM meeting
WHERE {@@Sql.easy_where [#Meeting] [all] [_] [_] [_] [_]
! ! allInj allFl r});
if alreadyScheduled then
return ()
else
addMeeting r
fun unschedule r =
ensureUser;
ensureWritable;
alreadyScheduled <- oneRowE1 (SELECT COUNT( * ) > 0
FROM meeting
WHERE {@@Sql.easy_where [#Meeting] [all] [_] [_] [_] [_]
! ! allInj allFl r});
if not alreadyScheduled then
return ()
else
delMeeting r
fun reschedule (r : {Them : $themKey, OldUs : $usKey, OldTime : $timeKey, NewUs : $usKey, NewTime : $timeKey}) =
ensureUser;
ensureWritable;
alreadyScheduled <- oneRowE1 (SELECT COUNT( * ) > 0
FROM meeting
WHERE {@@Sql.easy_where [#Meeting] [all] [_] [_] [_] [_]
! ! allInj allFl (r.Them ++ r.OldUs ++ r.OldTime)});
spotUsed <- oneRowE1 (SELECT COUNT( * ) > 0
FROM meeting
WHERE {@@Sql.easy_where [#Meeting] [all] [_] [_] [_] [_]
! ! allInj allFl (r.Them ++ r.NewUs ++ r.NewTime)});
if not alreadyScheduled || spotUsed then
return ()
else
delMeeting (r.Them ++ r.OldUs ++ r.OldTime);
addMeeting (r.Them ++ r.NewUs ++ r.NewTime)
fun render filt ctx t =
let
val colwidth = show (100 / (1 + List.length t.Times)) ^ "%"
val colwidth = oneProperty noStyle (value (property "width") (atom colwidth))
in
<xml>
<div class="table-fixedheader"><table class="bs-table table-fixedheader">
<thead>
<tr>
<th style={colwidth}> </th>
(* Header: one column per time *)
{List.mapX (fn tm => <xml><th style={colwidth}>{[tm]}</th></xml>) t.Times}
</tr>
</thead>
<tbody style="height: 500px">
(* One row per us *)
{List.mapX (fn (us, off, tms, requested) => <xml>
<tr dynStyle={b <- filt (us ++ off); return (if b then STYLE "" else STYLE "display: none")}>
<td style={colwidth}><strong>{usOfficeRender us off}</strong>
<dyn signal={reqs <- List.filterM (fn th => b <- List.existsM (fn (_, _, ths) =>
thsV <- signal ths;
return (List.exists (fn (th', _) => th' = th) thsV)) tms;
return (not b)) requested;
return (case reqs of
[] => <xml></xml>
| req1 :: reqs => <xml><span class="tooltip glyphicon glyphicon-question-circle"><span class="tooltiptext"><i>Requested but unscheduled:</i> {[req1]}{List.mapX (fn v => <xml>, {[v]}</xml>) reqs}</span></span></xml>)}/>
</td>
(* One column per time *)
{List.mapX (fn (tm, avail, ths) => <xml>
<td dynClass={mf <- signal t.MovingFrom;
cls <- (case mf of
None => return (CLASS "")
| Some _ =>
mt <- signal t.MovingTo;
return (case mt of
None => CLASS ""
| Some mt =>
if mt.Us = us && mt.Time = tm then
CLASS "bs-active"
else
CLASS ""));
return (if avail then cls else classes cls bg_danger)}
onmouseover={fn _ =>
if t.ReadOnly then
return ()
else
set t.MovingTo (Some {Us = us, Time = tm})}
onclick={fn _ =>
if t.ReadOnly then
return ()
else
mf <- get t.MovingFrom;
case mf of
None => return ()
| Some mf =>
mt <- get t.MovingTo;
case mt of
None => return ()
| Some mt =>
set t.MovingFrom None;
rpc (reschedule {Them = mf.Them,
OldUs = mf.Us,
OldTime = mf.Time,
NewUs = mt.Us,
NewTime = mt.Time})}
style={colwidth}>
<active code={selected <- source "";
deleting <- source False;
return <xml>
<dyn signal={thsv <- signal ths;
(* One button per meeting *)
return <xml>
{List.mapX (fn (th, tt) => <xml>
<div dynClass={case List.find (fn (th', _) => th' = th) t.Thems of
None => return (if t.ReadOnly then meeting_default else classes meeting_default meeting_movable)
| Some (_, unavails) =>
mf <- signal t.MovingFrom;
default <- return (if avail && not (List.mem tm unavails) then
case thsv of
_ :: _ :: _ => if t.ReadOnly then meeting_conflict else classes meeting_conflict meeting_movable
| _ => if tt > 1 then meeting_conflict else if t.ReadOnly then meeting_default else classes meeting_default meeting_movable
else
if t.ReadOnly then meeting_conflict else classes meeting_conflict meeting_movable);
return (case mf of
None => default
| Some mf =>
if mf.Us = us
&& mf.Them = th
&& mf.Time = tm then
classes meeting_selected tooltip
else
default)}
onclick={fn _ =>
if t.ReadOnly then
return ()
else
del <- get deleting;
if del then
set deleting False
else
stopPropagation;
set t.MovingFrom
(Some {Us = us,
Them = th,
Time = tm})}>
{case List.find (fn (th', _) => th' = th) t.Thems of
None => <xml></xml>
| Some (_, unavails) =>
if not avail then
<xml><span class="tooltip glyphicon glyphicon-question-circle"><span class="tooltiptext"><i>Conflict:</i> {[us]} marked this time as <b>unavailable.</b></span></span></xml>
else if List.mem tm unavails then
<xml><span class="tooltip glyphicon glyphicon-question-circle"><span class="tooltiptext"><i>Conflict:</i> {[th]} marked this time as <b>unavailable.</b></span></span></xml>
else
case thsv of
_ :: _ :: _ => <xml><span class="tooltip glyphicon glyphicon-question-circle"><span class="tooltiptext"><i>Conflict:</i> there are <b>multiple</b> meetings in this cell, indicating a double booking.</span></span></xml>
| _ => if tt > 1 then <xml><span class="tooltip glyphicon glyphicon-question-circle"><span class="tooltiptext"><i>Conflict:</i> {[th]} has <b>another meeting</b> scheduled at this time.</span></span></xml> else <xml></xml>}
{[th]}
{if t.ReadOnly then
<xml></xml>
else
Ui.modalButton ctx (CLASS "close")
<xml>×</xml>
(set deleting True;
return (Ui.modal
(rpc (unschedule (th ++ us ++ tm)))
<xml>Are you sure you want to delete the {[tm]} meeting between {[us]} and {[th]}?</xml>
<xml/>
<xml>Yes!</xml>))}
</div>
</xml>) thsv}
{if t.ReadOnly then
<xml></xml>
else
Ui.modalButton ctx (CLASS "btn btn-default btn-xs")
<xml>+</xml>
(return (Ui.modal
(sel <- get selected;
th <- return (readError sel : $themKey);
rpc (schedule (th ++ us ++ tm)))
<xml>Adding meeting for {[us]} at {[tm]}</xml>
<xml>
<cselect class="form-control"
source={selected}>
{List.mapX (fn (th, _) =>
if List.exists (fn (th', _) => th' = th) thsv then
<xml/>
else
<xml><coption>{[th]}</coption></xml>) t.Thems}
</cselect>
</xml>
<xml>Add Meeting</xml>))}
</xml>}/>
</xml>}/>
</td>
</xml>) tms}
</tr>
</xml>) t.Meetings}
</tbody>
</table></div>
</xml>
end
fun tweakMeeting (f : themSet -> themSet) (g : int -> int) (us : $usKey) (th : $themKey) (tm : $timeKey) =
List.app (fn (us', _, tms, _) =>
(if us' = us then
let
fun addTimes tms =
case tms of
[] => return ()
| (tm', _, ths) :: tms' =>
if tm' = tm then
v <- get ths;
set ths (f v)
else
addTimes tms'
in
addTimes tms
end
else
return ());
List.app (fn (tm', _, ths) =>
if tm = tm' then
thsv <- get ths;
set ths (List.mp (fn (th', count) =>
(th', if th' = th then
g count
else
count)) thsv)
else
return ()) tms)
fun onload t =
let
fun loop () =
r <- recv t.Channel;
let
val r' = localized (r -- #Operation -- #Time)
fun findExistingMeeting uses =
case uses of
[] => return 0
| (_, _, tms, _) :: uses' =>
let
fun fem tms =
case tms of
[] => findExistingMeeting uses'
| (tm, _, ths) :: tms' =>
if tm <> r.Time then
fem tms'
else
thsv <- get ths;
case List.find (fn (th, _) => th = r'.Them) thsv of
None => fem tms'
| Some (_, count) => return count
in
fem tms
end
in
case r.Operation of
Add =>
count <- findExistingMeeting t.Meetings;
tweakMeeting
(fn ls => List.sort (fn (x, _) (y, _) => show x > show y)
((r'.Them, count) :: ls))
(fn n => n + 1)
r'.Us r'.Them r.Time t.Meetings
| Del => tweakMeeting
(List.filter (fn (th, _) => th <> r'.Them))
(fn n => n - 1)
r'.Us r'.Them r.Time t.Meetings
end;
loop ()
in
spawn (loop ())
end
fun notification _ _ = <xml></xml>
fun buttons _ _ = <xml></xml>
fun ui filt = {
Create = create,
Onload = onload,
Render = render filt,
Notification = notification,
Buttons = buttons
}
end
structure One = struct
type themSet = list ($themKey * $themOffice)
type timeMap = list ($timeKey * themSet)
type input = $usKey
datatype timeslot =
Meeting of source themSet
| Fixed of string
type a = {Us : $usKey,
Meetings : list ($timeKey * timeslot),
Channel : channel usChannel}
fun create us =
let
fun doTimes (times : list $timeKey)
(rows : list {Meeting : $(timeKey ++ themKey), Them : $themOffice})
(thisTime : themSet)
(acc : timeMap)
: timeMap =
case times of
[] => List.rev acc
| tm :: times' =>
case rows of
[] => doTimes times' [] [] ((tm, List.rev thisTime) :: acc)
| row :: rows' =>
if row.Meeting --- themKey = tm then
doTimes times rows' ((row.Meeting --- timeKey, row.Them) :: thisTime) acc
else
doTimes times' rows [] ((tm, List.rev thisTime) :: acc)
fun merge (ls1 : list ($timeKey * source themSet)) (ls2 : list {When : $timeKey, Descr : string})
: list ($timeKey * timeslot) =
case (ls1, ls2) of
((tm1, s) :: ls1', {When = tm2, Descr = d} :: ls2') =>
if tm1 < tm2 then
(tm1, Meeting s) :: merge ls1' ls2
else
(tm2, Fixed d) :: merge ls1 ls2'
| ([], _) => List.mp (fn {When = tm, Descr = d} => (tm, Fixed d)) ls2
| (_, []) => List.mp (fn (tm, s) => (tm, Meeting s)) ls1
in
allTimes <- queryL1 (SELECT time.{{timeKey}}
FROM time
ORDER BY {{{@Sql.order_by timeKeyFl
(@Sql.some_fields [#Time] [timeKey] ! ! timeKeyFl)
sql_asc}}});
meetings <- queryL (SELECT meeting.{{timeKey}}, meeting.{{themKey}}, them.{{themOffice}}
FROM meeting
JOIN them ON {@@Sql.easy_join [#Meeting] [#Them] [themKey]
[usKey ++ timeKey]
[themOffice ++ themHardConst ++ themSoftConst ++ themOther]
[_] [_] [_]
! ! ! ! themFl}
WHERE {@@Sql.easy_where [#Meeting] [usKey] [_] [_] [_] [_]
! ! usInj' usFl us}
AND {@@Sql.easy_where [#Them] [themHardConst ++ themSoftConst]
[themKey ++ themOffice ++ themOther] [_] [_] [_]
! ! (themHardConstInj ++ themSoftConstInj)
(@Folder.concat ! themHardConstFl themSoftConstFl)
(themHardConst ++ themSoftConst)}
ORDER BY {{{@Sql.order_by (@Folder.concat ! timeKeyFl themFl)
(@Sql.some_fields [#Meeting] [timeKey ++ themKey] ! !
(@Folder.concat ! timeKeyFl themFl))
sql_asc}}});
meetings <- List.mapM (fn (tm, ths) =>
ths <- source ths;
return (tm, ths))
(doTimes allTimes meetings [] []);
ch <- channel;
@@Sql.easy_insert [[Channel = _] ++ usKey] [_]
({Channel = _} ++ usInj')
(@Folder.cons [#Channel] [_] ! usFl)
usListeners
({Channel = ch} ++ us);
fxd <- fixed;
return {Us = us, Meetings = merge meetings (List.sort (fn a b => a.When > b.When) fxd), Channel = ch}
end
(* Note: with a new improvement to Ur/Web type inference, this annotation becomes necessary.
* Should probably look further into why, some day. *)
fun render (t : a) = <xml>
<table class="bs-table">
<thead><tr>
<th>Time</th>
<th>Meeting</th>
</tr></thead>
<tbody>
{List.mapX (fn (tm, slot) => <xml>
<tr>
<td>{[tm]}</td>
<td>
<dyn signal={case slot of
Fixed d => return <xml><i>{[d]}</i></xml>
| Meeting ths =>
ths <- signal ths;
return (case ths of
[] => <xml>—</xml>
| (th, off) :: ths => <xml>{themOfficeRender th off}{List.mapX (fn (th, off) => <xml>, {themOfficeRender th off}</xml>) ths}</xml>)}/>
</td>
</tr>
</xml>) t.Meetings}
</tbody>
</table>
</xml>
fun tweakMeeting (f : themSet -> themSet) (tm : $timeKey) =
let
fun addTimes tms =
case tms of
[] => return ()
| (_, Fixed _) :: tms' => addTimes tms'
| (tm', Meeting ths) :: tms' =>
if tm' = tm then
v <- get ths;
set ths (f v)
else
addTimes tms'
in
addTimes
end
fun onload t =
let
fun loop () =
r <- recv t.Channel;
let
val r = usChannel r
in
case r.Operation of
Add =>
(case r.Place of
None => error <xml>One.onload: missing place</xml>
| Some off =>
tweakMeeting
(fn ls => List.sort (fn (x, _) (y, _) => show x > show y) ((r.Them, off) :: ls))
r.Time t.Meetings)
| Del => tweakMeeting
(List.filter (fn (th, _) => th <> r.Them))
r.Time t.Meetings
end;
loop ()
in
spawn (loop ())
end
fun notification _ _ = <xml></xml>
fun buttons _ _ = <xml></xml>
fun ui x = {
Create = create x,
Onload = onload,
Render = fn _ => render,
Notification = notification,
Buttons = buttons
}