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import { forwardRef, useEffect, useRef } from 'react'
import cn from '@/utils/classnames'
import { sleep } from '@/utils'
type IProps = {
placeholder?: string
value: string
onChange: (e: React.ChangeEvent<HTMLTextAreaElement>) => void
className?: string
wrapperClassName?: string
minHeight?: number
maxHeight?: number
autoFocus?: boolean
controlFocus?: number
onKeyDown?: (e: React.KeyboardEvent<HTMLTextAreaElement>) => void
onKeyUp?: (e: React.KeyboardEvent<HTMLTextAreaElement>) => void
}
const AutoHeightTextarea = forwardRef(
(
{ value, onChange, placeholder, className, wrapperClassName, minHeight = 36, maxHeight = 96, autoFocus, controlFocus, onKeyDown, onKeyUp }: IProps,
outerRef: any,
) => {
// eslint-disable-next-line react-hooks/rules-of-hooks
const ref = outerRef || useRef<HTMLTextAreaElement>(null)
const doFocus = () => {
if (ref.current) {
ref.current.setSelectionRange(value.length, value.length)
ref.current.focus()
return true
}
return false
}
const focus = async () => {
if (!doFocus()) {
let hasFocus = false
await sleep(100)
hasFocus = doFocus()
if (!hasFocus)
focus()
}
}
useEffect(() => {
if (autoFocus)
focus()
}, [])
useEffect(() => {
if (controlFocus)
focus()
}, [controlFocus])
return (
<div className={`relative ${wrapperClassName}`}>
<div className={cn(className, 'invisible whitespace-pre-wrap break-all overflow-y-auto')} style={{
minHeight,
maxHeight,
paddingRight: (value && value.trim().length > 10000) ? 140 : 130,
}}>
{!value ? placeholder : value.replace(/\n$/, '\n ')}
</div>
<textarea
ref={ref}
autoFocus={autoFocus}
className={cn(className, 'absolute inset-0 resize-none overflow-auto')}
style={{
paddingRight: (value && value.trim().length > 10000) ? 140 : 130,
}}
placeholder={placeholder}
onChange={onChange}
onKeyDown={onKeyDown}
onKeyUp={onKeyUp}
value={value}
/>
</div>
)
},
)
AutoHeightTextarea.displayName = 'AutoHeightTextarea'
export default AutoHeightTextarea
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