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{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DisambiguateRecordFields #-}
{-# LANGUAGE ImportQualifiedPost #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QualifiedDo #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -Wno-name-shadowing #-}
module Main where
import Clay qualified as C
import DOM.HTML.Indexed qualified as I
import Data.Functor.Coyoneda
import Data.NT
import Data.Row
import Halogen as H
import Halogen.Component.Debounced
import Halogen.HTML as HH
import Halogen.HTML.Events as HE
import Halogen.HTML.Layout as L
import Halogen.HTML.Layout.BoxLayout
import Halogen.HTML.Layout.GridBagLayout
import Halogen.HTML.Properties as HP
import Halogen.Subscription qualified as HS
import Halogen.VDom.DOM.Monad
import JavaScript.Web.XMLHttpRequest
import Protolude hiding (log)
import UnliftIO (MonadUnliftIO)
#if defined(javascript_HOST_ARCH)
import Halogen.IO.Util as HA
import Halogen.VDom.Driver (runUI)
#endif
attachComponent :: IO (HalogenSocket Query Int IO)
logStr :: Text -> IO ()
#if defined(javascript_HOST_ARCH)
attachComponent =
HA.awaitBody >>= runUI component ()
logStr = log
#else
attachComponent = panic "This module can only be run on JavaScript"
logStr = putStrLn
#endif
main :: IO ()
main = do
HalogenSocket {messages} <- attachComponent
void $ HS.subscribe messages $ \st ->
logStr $ "State changed: " <> show st
{-
forever $ do
threadDelay 5_000_000
void $ query (IncrementQ ())
threadDelay 5_000_000
void $ query (DecrementQ ())
-}
data Action = Increment Int | Decrement Int | Init
type Slots = ("debounced" .== H.Slot VoidF () ())
data Query a = IncrementQ a | DecrementQ a
component :: forall m. (MonadDOM m, MonadUnliftIO m) => H.Component Query () Int m
component =
H.mkComponent $
H.ComponentSpec
{ initialState,
render,
eval = H.mkEval $ H.defaultEval {handleAction, handleQuery, initialize = Just Init}
}
where
initialState _ = pure 0
render :: (MonadDOM m, MonadUnliftIO m) => Int -> H.ComponentHTML Action Slots m
render state =
L.runLayoutM (defGridBagSettings {rows = 3, cols = 3}) $ L.do
L.with (GridBagLayoutConstraints 1 1 2 2) $ L.runLayoutM Vertical $ L.do
HH.button [HE.onClick $ const $ Decrement 1] [HH.text "-"]
L.if_ (state > 5) $ HH.button [HE.onClick $ const $ Decrement 2] [HH.text "--"]
HH.div_ [HH.text $ show state]
HH.button [HE.onClick $ const $ Increment 1] [HH.text "+"]
L.if_ (state > 5) $ HH.button [HE.onClick $ const $ Increment 2] [HH.text "++"]
slot_ "debounced" () debComp ()
HH.div_ [HH.text "Test sentinel element"]
L.end
L.with (GridBagLayoutConstraints 3 3 1 1) $
HH.div [HP.style $ C.border (C.px 2) C.solid C.black] [HH.text "Banner!"]
L.end
handleQuery = \case
IncrementQ cb -> do
modify (+ 1)
get >>= H.raise
pure $ Just cb
DecrementQ cb -> do
modify (subtract 1)
get >>= H.raise
pure $ Just cb
handleAction = \case
Init ->
lift $ do
log "Initialized"
_ <-
liftIO $ xhrByteString
( Request
{ reqMethod = GET,
reqURI = "http://localhost:8081/api/rest/collection/user",
reqLogin = Nothing,
reqHeaders = [],
reqWithCredentials = False,
reqData = NoData
}
)
pure ()
Increment n -> do
modify (+ n)
get >>= H.raise
Decrement n -> do
modify (subtract n)
get >>= H.raise
---------------------------------------
newtype DebChanged = DebChanged Text
debComp :: (MonadDOM m, MonadUnliftIO m) => Component VoidF () () m
debComp = unsafeMkDebouncedComponent 0.5 $ ComponentSpec {initialState, render, eval}
where
initialState _ = pure ""
render txt = runLayoutM Vertical $ L.do
HH.div_ [HH.text "The text below is debounced"]
HH.div_ [HH.text $ "Input content: " <> txt]
HH.input
[ HP.type_ I.InputText,
HP.value txt,
HP.style $ C.width C.auto,
HE.onInputValueChange $ Just . DebChanged
]
L.end
eval = NT $ \case
Initialize a -> pure a
Finalize a -> pure a
Receive _i a -> pure a
Action (DebChanged str) a ->
put str $> a
Query (Coyoneda _req _fct) _f -> panic "Void2"
|
