Files
smesh/src/components/Collapsible/index.tsx
2025-12-12 10:23:13 +08:00

77 lines
1.9 KiB
TypeScript

import { Button } from '@/components/ui/button'
import { cn } from '@/lib/utils'
import { useEffect, useRef, useState } from 'react'
import { useTranslation } from 'react-i18next'
export default function Collapsible({
alwaysExpand = false,
children,
className,
threshold = 1000,
collapsedHeight = 600,
...props
}: {
alwaysExpand?: boolean
threshold?: number
collapsedHeight?: number
} & React.HTMLProps<HTMLDivElement>) {
const { t } = useTranslation()
const containerRef = useRef<HTMLDivElement>(null)
const [expanded, setExpanded] = useState(false)
const [shouldCollapse, setShouldCollapse] = useState(false)
useEffect(() => {
if (alwaysExpand || shouldCollapse) return
const contentEl = containerRef.current
if (!contentEl) return
const checkHeight = () => {
const fullHeight = contentEl.scrollHeight
if (fullHeight > threshold) {
setShouldCollapse(true)
}
}
checkHeight()
const observer = new ResizeObserver(() => {
checkHeight()
})
observer.observe(contentEl)
return () => {
observer.disconnect()
}
}, [alwaysExpand, shouldCollapse])
return (
<div
className={cn('relative text-left overflow-hidden', className)}
ref={containerRef}
{...props}
style={{
maxHeight: !shouldCollapse || expanded ? 'none' : `${collapsedHeight}px`
}}
>
{children}
{shouldCollapse && !expanded && (
<div className="absolute bottom-0 h-40 w-full z-10 bg-gradient-to-b from-transparent to-background/90 flex items-end justify-center pb-4">
<div className="bg-background rounded-lg">
<Button
className="bg-foreground hover:bg-foreground/80"
onClick={(e) => {
e.stopPropagation()
setExpanded(!expanded)
}}
>
{t('Show more')}
</Button>
</div>
</div>
)}
</div>
)
}