Created
August 2, 2024 11:51
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Scrollable component with UI clue (React + TailwindCss)
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| import React, { useRef, useEffect, useState, ReactNode } from "react"; | |
| import { cn } from "@/libs/utils"; | |
| interface ScrollableWithGradientProps { | |
| children: ReactNode; | |
| className?: string; | |
| containerClassName?: string; | |
| gradientClassName?: string; | |
| maxHeight?: string; | |
| } | |
| export function Scrollable({ | |
| children, | |
| className, | |
| containerClassName, | |
| gradientClassName, | |
| maxHeight = "11rem", | |
| }: ScrollableWithGradientProps) { | |
| const scrollableRef = useRef<HTMLDivElement>(null); | |
| const [showGradient, setShowGradient] = useState(true); | |
| useEffect(() => { | |
| const handleScroll = () => { | |
| if (scrollableRef.current) { | |
| const { scrollTop, scrollHeight, clientHeight } = scrollableRef.current; | |
| setShowGradient(scrollTop + clientHeight < scrollHeight - 10); | |
| } | |
| }; | |
| const scrollableElement = scrollableRef.current; | |
| if (scrollableElement) { | |
| scrollableElement.addEventListener("scroll", handleScroll); | |
| handleScroll(); // Check initial state | |
| } | |
| return () => { | |
| if (scrollableElement) { | |
| scrollableElement.removeEventListener("scroll", handleScroll); | |
| } | |
| }; | |
| }, []); | |
| return ( | |
| <div className={cn("relative", containerClassName)}> | |
| <div | |
| ref={scrollableRef} | |
| className={cn( | |
| "overflow-y-auto rounded bg-os-background-200 p-4 scrollbar-thin scrollbar-track-transparent scrollbar-thumb-primary/20 scrollbar-thumb-rounded-md dark:bg-os-background-800", | |
| className, | |
| )} | |
| style={{ maxHeight }} | |
| > | |
| {children} | |
| </div> | |
| {showGradient && ( | |
| <div | |
| className={cn( | |
| "pointer-events-none absolute bottom-0 left-0 right-0 h-8 bg-gradient-to-t from-os-background-200 to-transparent dark:from-os-background-800", | |
| gradientClassName, | |
| )} | |
| /> | |
| )} | |
| </div> | |
| ); | |
| } |
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