@mantine/core
Version:
React components library focused on usability, accessibility and developer experience
53 lines (52 loc) • 2.11 kB
JavaScript
"use client";
import { useScrollAreaContext } from "../ScrollArea.context.mjs";
import { composeEventHandlers } from "../utils/compose-event-handlers.mjs";
import { ScrollAreaScrollbarVisible } from "./ScrollAreaScrollbarVisible.mjs";
import { useEffect, useState } from "react";
import { useDebouncedCallback } from "@mantine/hooks";
import { jsx } from "react/jsx-runtime";
//#region packages/@mantine/core/src/components/ScrollArea/ScrollAreaScrollbar/ScrollAreaScrollbarScroll.tsx
function ScrollAreaScrollbarScroll(props) {
const { forceMount, ...scrollbarProps } = props;
const context = useScrollAreaContext();
const isHorizontal = props.orientation === "horizontal";
const [state, setState] = useState("hidden");
const debounceScrollEnd = useDebouncedCallback(() => setState("idle"), 100);
useEffect(() => {
if (state === "idle") {
const hideTimer = window.setTimeout(() => setState("hidden"), context.scrollHideDelay);
return () => window.clearTimeout(hideTimer);
}
}, [state, context.scrollHideDelay]);
useEffect(() => {
const { viewport } = context;
const scrollDirection = isHorizontal ? "scrollLeft" : "scrollTop";
if (viewport) {
let prevScrollPos = viewport[scrollDirection];
const handleScroll = () => {
const scrollPos = viewport[scrollDirection];
if (prevScrollPos !== scrollPos) {
setState("scrolling");
debounceScrollEnd();
}
prevScrollPos = scrollPos;
};
viewport.addEventListener("scroll", handleScroll);
return () => viewport.removeEventListener("scroll", handleScroll);
}
}, [
context.viewport,
isHorizontal,
debounceScrollEnd
]);
if (forceMount || state !== "hidden") return /* @__PURE__ */ jsx(ScrollAreaScrollbarVisible, {
"data-state": state === "hidden" ? "hidden" : "visible",
...scrollbarProps,
onPointerEnter: composeEventHandlers(props.onPointerEnter, () => setState("interacting")),
onPointerLeave: composeEventHandlers(props.onPointerLeave, () => setState("idle"))
});
return null;
}
//#endregion
export { ScrollAreaScrollbarScroll };
//# sourceMappingURL=ScrollAreaScrollbarScroll.mjs.map