@mantine/core
Version:
React components library focused on usability, accessibility and developer experience
74 lines (73 loc) • 2.84 kB
JavaScript
"use client";
import { useScrollAreaContext } from "../ScrollArea.context.mjs";
import { composeEventHandlers } from "../utils/compose-event-handlers.mjs";
import { addUnlinkedScrollListener } from "../utils/add-unlinked-scroll-listener.mjs";
import { useScrollbarContext } from "../ScrollAreaScrollbar/Scrollbar.context.mjs";
import { useEffect, useRef } from "react";
import { useDebouncedCallback, useMergedRef } from "@mantine/hooks";
import { jsx } from "react/jsx-runtime";
//#region packages/@mantine/core/src/components/ScrollArea/ScrollAreaThumb/ScrollAreaThumb.tsx
function Thumb(props) {
const { style, ref: forwardedRef, ...others } = props;
const scrollAreaContext = useScrollAreaContext();
const scrollbarContext = useScrollbarContext();
const { onThumbPositionChange } = scrollbarContext;
const composedRef = useMergedRef(forwardedRef, (node) => scrollbarContext.onThumbChange(node));
const removeUnlinkedScrollListenerRef = useRef(void 0);
const debounceScrollEnd = useDebouncedCallback(() => {
if (removeUnlinkedScrollListenerRef.current) {
removeUnlinkedScrollListenerRef.current();
removeUnlinkedScrollListenerRef.current = void 0;
}
}, 100);
useEffect(() => {
const { viewport } = scrollAreaContext;
if (viewport) {
const handleScroll = () => {
debounceScrollEnd();
if (!removeUnlinkedScrollListenerRef.current) {
removeUnlinkedScrollListenerRef.current = addUnlinkedScrollListener(viewport, onThumbPositionChange);
onThumbPositionChange();
}
};
onThumbPositionChange();
viewport.addEventListener("scroll", handleScroll);
return () => viewport.removeEventListener("scroll", handleScroll);
}
}, [
scrollAreaContext.viewport,
debounceScrollEnd,
onThumbPositionChange
]);
return /* @__PURE__ */ jsx("div", {
"data-state": scrollbarContext.hasThumb ? "visible" : "hidden",
...others,
ref: composedRef,
style: {
width: "var(--sa-thumb-width)",
height: "var(--sa-thumb-height)",
...style
},
onPointerDownCapture: composeEventHandlers(props.onPointerDownCapture, (event) => {
const thumbRect = event.target.getBoundingClientRect();
const x = event.clientX - thumbRect.left;
const y = event.clientY - thumbRect.top;
scrollbarContext.onThumbPointerDown({
x,
y
});
}),
onPointerUp: composeEventHandlers(props.onPointerUp, scrollbarContext.onThumbPointerUp)
});
}
Thumb.displayName = "@mantine/core/ScrollAreaThumb";
function ScrollAreaThumb(props) {
const { forceMount, ...thumbProps } = props;
const scrollbarContext = useScrollbarContext();
if (forceMount || scrollbarContext.hasThumb) return /* @__PURE__ */ jsx(Thumb, { ...thumbProps });
return null;
}
ScrollAreaThumb.displayName = "@mantine/core/ScrollAreaThumb";
//#endregion
export { ScrollAreaThumb };
//# sourceMappingURL=ScrollAreaThumb.mjs.map