Created
July 3, 2020 20:08
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import React, { useEffect, useRef } from "react"; | |
type TextInputProps = { | |
onChange: (value: string) => void; | |
value: string; | |
id?: string; | |
type: "text"; | |
}; | |
type NumberInputProps = { | |
onChange: (value: number) => void; | |
value: number; | |
id?: string; | |
type: "number"; | |
}; | |
type GenericInputProps = TextInputProps | NumberInputProps; | |
const isNumberInput = ( | |
genericInputProps: GenericInputProps | |
): genericInputProps is NumberInputProps => { | |
return genericInputProps.type === "number"; | |
}; | |
export const GenericInput = (props: GenericInputProps) => { | |
const ref = useRef<HTMLInputElement>(null); | |
// For undo functionality, we have to listen to changes and set state manually when redux updates. (on blur, on undo, on redo) | |
useEffect(() => { | |
if (ref.current) { | |
if (typeof props.value === "number") { | |
ref.current.value = String(props.value); | |
} else { | |
ref.current.value = props.value; | |
} | |
} | |
}, [props.value]); | |
return ( | |
<input | |
ref={ref} | |
type={props.type} | |
id={props.id} | |
className="border-gray-500 border-2 p-2 rounded" | |
onBlur={(e) => { | |
const val = e.target.value; | |
if (isNumberInput(props)) { | |
props.onChange(Number(val)); | |
} else { | |
props.onChange(val); | |
} | |
}} | |
defaultValue={props.value} | |
/> | |
); | |
}; |
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