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Add handler_ for simple event handlers #31

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Merged
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May 4, 2018
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Add handler_ for simple event handlers #31

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11 changes: 11 additions & 0 deletions src/React/Basic/Events.purs
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,17 @@ derive newtype instance categoryBuilder :: Category EventFn
handler :: forall a. EventFn SyntheticEvent a -> (a -> Eff (react :: ReactFX) Unit) -> EventHandler
handler (EventFn fn) cb = mkEffFn1 $ fn >>> cb

-- | Create an `EventHandler` which discards the `SyntheticEvent`.
-- |
-- | For example:
-- |
-- | ```purs
-- | input { onChange: handler_ (setState \_ -> { value })
-- | }
-- | ```
handler_ :: forall a. Eff (react :: ReactFX) Unit -> EventHandler
handler_ = mkEffFn1 <<< const

class Merge (rl :: RowList) fns a r | rl -> fns, rl a -> r where
mergeImpl :: RLProxy rl -> Record fns -> EventFn a (Record r)

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