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import React, {useState} from 'react';
import {createStyles, makeStyles, Theme} from '@material-ui/core/styles';
import InputLabel from '@material-ui/core/InputLabel';
import Select from '@material-ui/core/Select';
import MenuItem from '@material-ui/core/MenuItem';
import FormControl from '@material-ui/core/FormControl';
import {FormHelperText} from '@material-ui/core';
const useStyles = makeStyles((theme: Theme) =>
createStyles({
formControl: {
margin: theme.spacing(1),
minWidth: 120,
},
}),
);
interface Option {
value: number | string
}
const ControlledOpenSelect = <T extends Option>(
{ option, options, setOption, setError=() => {}, error=false, label="", required=false }:
{ option: T,
options: [T, ...T[]],
setOption: (arg0: T) => void,
setError?: (arg0: boolean) => void,
label?: string,
error?: boolean,
required?: boolean }
) => {
const classes = useStyles();
const [open, setOpen] = useState(false);
const handleClose = () => setOpen(false);
const handleOpen = () => setOpen(true);
return (
<div>
<FormControl required={required} color="secondary" className={classes.formControl}>
<InputLabel>{label}</InputLabel>
<Select
open={open}
onClose={handleClose}
onOpen={handleOpen}
value={option}
onChange={e => {setError(false); setOption(e.target.value as T)}}
error={error}
>
{
options.map(option => (
<MenuItem
key={option.value}
value={option.value}
>
{option.value}
</MenuItem>
))
}
</Select>
<FormHelperText error={error}>{error ? "Error: select a value" : ""}</FormHelperText>
</FormControl>
</div>
);
}
export default ControlledOpenSelect
@Sebastian-Nielsen
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Sample use:

	const [importanceError, setImportanceError] = useState(false)
	const [importance, setImportance] = useState('')
	const importanceOptions = [
			{value: "Low"},
			{value: "Medium"},
			{value: "High"}
	]



					<ControlledOpenSelect
							option={importance}
							options={importanceOptions}
							setOption={setImportance}
							label={"Importance"}
							error={importanceError}
							setError={setImportanceError}
							required={true}
					/>

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