53 lines
1.5 KiB
TypeScript
53 lines
1.5 KiB
TypeScript
import { PropsWithChildren, useCallback, useEffect, useRef } from 'react'
|
|
|
|
import { ScrollArea } from '@janhq/joi'
|
|
|
|
const ListContainer = ({ children }: PropsWithChildren) => {
|
|
const listRef = useRef<HTMLDivElement>(null)
|
|
const prevScrollTop = useRef(0)
|
|
const isUserManuallyScrollingUp = useRef(false)
|
|
|
|
const handleScroll = useCallback((event: React.UIEvent<HTMLElement>) => {
|
|
const currentScrollTop = event.currentTarget.scrollTop
|
|
|
|
if (prevScrollTop.current > currentScrollTop) {
|
|
isUserManuallyScrollingUp.current = true
|
|
} else {
|
|
const currentScrollTop = event.currentTarget.scrollTop
|
|
const scrollHeight = event.currentTarget.scrollHeight
|
|
const clientHeight = event.currentTarget.clientHeight
|
|
|
|
if (currentScrollTop + clientHeight >= scrollHeight) {
|
|
isUserManuallyScrollingUp.current = false
|
|
}
|
|
}
|
|
|
|
if (isUserManuallyScrollingUp.current === true) {
|
|
event.preventDefault()
|
|
event.stopPropagation()
|
|
}
|
|
prevScrollTop.current = currentScrollTop
|
|
}, [])
|
|
|
|
useEffect(() => {
|
|
if (isUserManuallyScrollingUp.current === true || !listRef.current) return
|
|
const scrollHeight = listRef.current?.scrollHeight ?? 0
|
|
listRef.current?.scrollTo({
|
|
top: scrollHeight,
|
|
behavior: 'instant',
|
|
})
|
|
}, [listRef.current?.scrollHeight, isUserManuallyScrollingUp])
|
|
|
|
return (
|
|
<ScrollArea
|
|
className="flex h-full w-full flex-col overflow-x-hidden"
|
|
ref={listRef}
|
|
onScroll={handleScroll}
|
|
>
|
|
{children}
|
|
</ScrollArea>
|
|
)
|
|
}
|
|
|
|
export default ListContainer
|