65 lines
1.8 KiB
Plaintext
65 lines
1.8 KiB
Plaintext
module Component.RawHtml where
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import Prelude
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import Data.Foldable (for_)
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import Data.Maybe (Maybe(..))
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import Effect (Effect)
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import Effect.Aff (Aff, forkAff, makeAff)
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import Effect.Class (liftEffect)
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import Globals (RawHTML(..))
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import Halogen as H
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import Halogen.HTML as HH
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import Halogen.HTML.Properties as HP
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import Web.HTML (HTMLElement)
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foreign import unsafeSetInnerHTML :: HTMLElement -> RawHTML -> Effect Unit
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data Action i
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= SetInnerHTML
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| Receive (Input i)
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type Input :: forall k. k -> k
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type Input i = i
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type State i =
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{ elRef :: H.RefLabel
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, inputval :: Input i
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}
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component :: forall q o. H.Component q (Input String) o Aff
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component = mkComponent RawHTML
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mkComponent :: forall q i o. (Input i -> RawHTML) -> H.Component q (Input i) o Aff
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mkComponent toRawHTML =
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H.mkComponent
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{ initialState: \inputval -> { elRef: H.RefLabel "inputval", inputval }
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, render
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, eval: H.mkEval (H.defaultEval { handleAction = handleAction
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, initialize = Just SetInnerHTML
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, receive = Just <<< Receive
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})
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}
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where
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render :: forall m. (State i) -> H.ComponentHTML (Action i) () m
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render state =
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HH.div
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[ HP.ref state.elRef ]
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[]
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handleAction :: (Action i) -> H.HalogenM (State i) (Action i) () o Aff Unit
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handleAction = case _ of
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SetInnerHTML -> do
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{ elRef } <- H.get
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mel <- H.getHTMLElementRef elRef
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for_ mel \el -> do
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{ inputval } <- H.get
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H.liftAff $ forkAff $ makeAff \_ -> do
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liftEffect $ unsafeSetInnerHTML el (toRawHTML inputval)
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mempty
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pure unit
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Receive inputval -> do
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H.modify_ _ { inputval = inputval }
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handleAction $ SetInnerHTML
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