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module Component.Modal
( ModalIn(..)
, ModalOut(..)
, modal
) where
import Control.Monad (void)
import qualified Data.Map as M
import qualified Data.Map.Lazy as LM
import Data.Text (Text)
import qualified GHCJS.DOM.Element as Element
import qualified GHCJS.DOM.Node as Node
import JSDOM.Types (JSString)
import Reflex.Dom (Dynamic, Event, MonadWidget)
import qualified Reflex.Dom as R
import qualified Reflex.Dom.Class as R
import qualified Util.Dom as Dom
data ModalIn t m a = ModalIn
{ _modalIn_show :: Event t ()
, _modalIn_hide :: Event t ()
, _modalIn_content :: m a
}
data ModalOut t a = ModalOut
{ _modalOut_content :: a
, _modalOut_hide :: Event t ()
}
modal :: forall t m a. MonadWidget t m => ModalIn t m a -> m (ModalOut t a)
modal modalIn = do
rec
let showEvent = R.leftmost
[ True <$ _modalIn_show modalIn
, False <$ _modalIn_hide modalIn
, False <$ curtainClick
]
showModal <- R.holdDyn False showEvent
(elem, (curtainClick, content)) <-
R.buildElement "div" (getAttributes <$> showModal) $ do
(curtain, _) <- R.elAttr' "div" (M.singleton "class" "modalCurtain") $ R.blank
cont <- R.divClass "modalContent" $ _modalIn_content modalIn
return (R.domEvent R.Click curtain, cont)
performShowEffects showEvent elem
return $ ModalOut
{ _modalOut_content = content
, _modalOut_hide = curtainClick
}
getAttributes :: Bool -> LM.Map Text Text
getAttributes show =
M.fromList $
[ ("style", if show then "display:block" else "display:none")
, ("class", "modal")
]
performShowEffects
:: forall t m a. MonadWidget t m
=> Event t Bool
-> Element.Element
-> m ()
performShowEffects showEvent elem = do
body <- Dom.getBody
let showEffects =
flip fmap showEvent (\show -> do
if show then
do
Node.appendChild body elem
Element.setClassName body ("modal" :: JSString)
else
do
Node.removeChild body elem
Element.setClassName body ("" :: JSString)
)
R.performEvent_ $ void `fmap` showEffects
|
