+//updateS :: MTaskShare -> Task BCValue
+//updateS sh = flip (<<@) (Title $ toString sh.identifier) $ forever $
+// viewSharedInformation "Current value" [] (getSDSShare sh)
+// ||- (
+// updateSharedInformation "New value" [] (getSDSShare sh)
+// >>= \nv->allTasks (map (withDevice treturn) sh.withDevice)
+// >>= \devs->allTasks (map (sendMessages [MTUpd sh.identifier nv]) devs)
+// >>| treturn nv
+// )
+// <<@ ArrangeHorizontal
+
+//viewSharesGrid :: (Shared (Maybe MTaskShare)) [MTaskShare] -> Task [BCValue]
+//viewSharesGrid _ [] = viewInformation "No shares yet" [] []
+//viewSharesGrid cs sh = (allTasks [watch (getSDSShare m)\\m<-sh] <<@ NoUserInterface)
+// >&^ \st->flip (<<@) NoUserInterface $ whileUnchanged st $ \mshs->enterChoice "" [ChooseFromGrid id]
+// [{MTaskShare|ss&value=s}\\s<-fromJust mshs & ss<-sh]
+// >>* [OnValue (withValue $ \s->Just (set (Just s) cs))]
+// @! fromJust mshs
+
+//viewShare :: MTaskShare -> Task BCValue
+//viewShare m = viewSharedInformation "" [] (getSDSShare m)
+// <<@ Title ("SDS: " +++ toString m.identifier)
+
+makeShare :: String Int BCValue -> MTaskShare
+makeShare withTask identifier value = {MTaskShare
+ |withTask=[withTask]
+ ,identifier=identifier
+ ,value=value
+ }
+
+import GenPrint, StdMisc, StdDebug, TTY
+
+gPrint{|BCState|} x st = gPrint{|*|} "BCState..." st
+
+derive gPrint MTaskDevice, MTaskShare, Maybe, MTaskResource, MTaskTask, TaskId, TTYSettings, TCPSettings, DateTime
+derive gPrint Parity, BaudRate, ByteSize
+
+cleanSharesTask :: Int MTaskDevice -> Task [MTaskShare]
+cleanSharesTask taskid d = updateShares d id //TODO
+//# shares = d.deviceShares
+//| not (trace_tn $ printToString taskid) = undef
+//| not (trace_tn $ printToString d.deviceTasks) = undef
+//| not (trace_tn $ printToString $ getNames taskid d) = undef
+//= upd (map $ up $ getNames taskid d) sdsStore
+// where
+// getNames :: Int MTaskDevice -> [String]
+// getNames i d = [t.MTaskTask.name\\t<-d.deviceTasks|t.ident==i]
+//
+// up :: [String] MTaskShare -> MTaskShare
+// up ns s = {MTaskShare | s & withTask=[t\\t<-s.withTask|not (isMember t ns)]}
+
+instance == MTaskShare where
+ (==) a b = a.identifier == b.identifier
+
+getRealShare :: MTaskDevice MTaskShare -> Shared BCValue
+getRealShare dev share = sdsFocus ()
+ $ mapReadWriteError (deviceLens dev share)
+ $ sdsFocus (Just (dev, share.identifier))
+ $ deviceStore
+
+deviceLens dev share = (mread, mwrite)
+where
+ mread :: [MTaskDevice] -> MaybeError TaskException BCValue
+ mread devs = case find ((==)dev) devs of
+ Nothing = Error $ exception "Device doesn't exist anymore"
+ Just {deviceShares} = case find ((==)share) deviceShares of
+ Nothing = Error $ exception "Share doesn't exist anymore"
+ Just share = Ok share.MTaskShare.value
+
+ mwrite :: BCValue [MTaskDevice] -> MaybeError TaskException (Maybe [MTaskDevice])
+ mwrite val devs = case partition ((==)dev) devs of
+ ([], _) = Error $ exception "Device doesn't exist anymore"
+ ([_,_:_], _) = Error $ exception "Multiple matching devices"
+ ([d=:{deviceShares}], devs) = case partition ((==)share) deviceShares of
+ ([], _) = Error $ exception "Share doesn't exist anymore"
+ ([_,_:_], _) = Error $ exception "Multiple matching shares"
+ ([s], shares)
+ # s = {MTaskShare | s & value=val}
+ # d = {MTaskDevice | d & deviceShares=[s:shares]}
+ = Ok $ Just [d:devs]
+
+updateShareFromPublish :: MTaskDevice Int BCValue -> Task BCValue
+updateShareFromPublish dev ident val = set val
+ $ mapReadWriteError (deviceLens dev dummy)
+ $ deviceStoreNP
+where
+ dummy = {MTaskShare|value=BCValue 0,identifier=ident,withTask=[]}