emaui/node_modules/@mantine/hooks/esm/use-scroll-into-view/use-scroll-into-view.mjs

'use client';
import { useRef, useCallback, useEffect } from 'react';
import { useReducedMotion } from '../use-reduced-motion/use-reduced-motion.mjs';
import { useWindowEvent } from '../use-window-event/use-window-event.mjs';

function useScrollIntoView({
  duration = 1250,
  axis = "y",
  onScrollFinish,
  easing = easeInOutQuad,
  offset = 0,
  cancelable = true,
  isList = false
} = {}) {
  const frameID = useRef(0);
  const startTime = useRef(0);
  const shouldStop = useRef(false);
  const scrollableRef = useRef(null);
  const targetRef = useRef(null);
  const reducedMotion = useReducedMotion();
  const cancel = () => {
    if (frameID.current) {
      cancelAnimationFrame(frameID.current);
    }
  };
  const scrollIntoView = useCallback(
    ({ alignment = "start" } = {}) => {
      shouldStop.current = false;
      if (frameID.current) {
        cancel();
      }
      const start = getScrollStart({ parent: scrollableRef.current, axis }) ?? 0;
      const change = getRelativePosition({
        parent: scrollableRef.current,
        target: targetRef.current,
        axis,
        alignment,
        offset,
        isList
      }) - (scrollableRef.current ? 0 : start);
      function animateScroll() {
        if (startTime.current === 0) {
          startTime.current = performance.now();
        }
        const now = performance.now();
        const elapsed = now - startTime.current;
        const t = reducedMotion || duration === 0 ? 1 : elapsed / duration;
        const distance = start + change * easing(t);
        setScrollParam({
          parent: scrollableRef.current,
          axis,
          distance
        });
        if (!shouldStop.current && t < 1) {
          frameID.current = requestAnimationFrame(animateScroll);
        } else {
          typeof onScrollFinish === "function" && onScrollFinish();
          startTime.current = 0;
          frameID.current = 0;
          cancel();
        }
      }
      animateScroll();
    },
    [axis, duration, easing, isList, offset, onScrollFinish, reducedMotion]
  );
  const handleStop = () => {
    if (cancelable) {
      shouldStop.current = true;
    }
  };
  useWindowEvent("wheel", handleStop, {
    passive: true
  });
  useWindowEvent("touchmove", handleStop, {
    passive: true
  });
  useEffect(() => cancel, []);
  return {
    scrollableRef,
    targetRef,
    scrollIntoView,
    cancel
  };
}
function easeInOutQuad(t) {
  return t < 0.5 ? 2 * t * t : -1 + (4 - 2 * t) * t;
}
function getRelativePosition({ axis, target, parent, alignment, offset, isList }) {
  if (!target || !parent && typeof document === "undefined") {
    return 0;
  }
  const isCustomParent = !!parent;
  const parentElement = parent || document.body;
  const parentPosition = parentElement.getBoundingClientRect();
  const targetPosition = target.getBoundingClientRect();
  const getDiff = (property) => targetPosition[property] - parentPosition[property];
  if (axis === "y") {
    const diff = getDiff("top");
    if (diff === 0) {
      return 0;
    }
    if (alignment === "start") {
      const distance = diff - offset;
      const shouldScroll = distance <= targetPosition.height * (isList ? 0 : 1) || !isList;
      return shouldScroll ? distance : 0;
    }
    const parentHeight = isCustomParent ? parentPosition.height : window.innerHeight;
    if (alignment === "end") {
      const distance = diff + offset - parentHeight + targetPosition.height;
      const shouldScroll = distance >= -targetPosition.height * (isList ? 0 : 1) || !isList;
      return shouldScroll ? distance : 0;
    }
    if (alignment === "center") {
      return diff - parentHeight / 2 + targetPosition.height / 2;
    }
    return 0;
  }
  if (axis === "x") {
    const diff = getDiff("left");
    if (diff === 0) {
      return 0;
    }
    if (alignment === "start") {
      const distance = diff - offset;
      const shouldScroll = distance <= targetPosition.width || !isList;
      return shouldScroll ? distance : 0;
    }
    const parentWidth = isCustomParent ? parentPosition.width : window.innerWidth;
    if (alignment === "end") {
      const distance = diff + offset - parentWidth + targetPosition.width;
      const shouldScroll = distance >= -targetPosition.width || !isList;
      return shouldScroll ? distance : 0;
    }
    if (alignment === "center") {
      return diff - parentWidth / 2 + targetPosition.width / 2;
    }
    return 0;
  }
  return 0;
}
function getScrollStart({ axis, parent }) {
  if (!parent && typeof document === "undefined") {
    return 0;
  }
  const method = axis === "y" ? "scrollTop" : "scrollLeft";
  if (parent) {
    return parent[method];
  }
  const { body, documentElement } = document;
  return body[method] + documentElement[method];
}
function setScrollParam({ axis, parent, distance }) {
  if (!parent && typeof document === "undefined") {
    return;
  }
  const method = axis === "y" ? "scrollTop" : "scrollLeft";
  if (parent) {
    parent[method] = distance;
  } else {
    const { body, documentElement } = document;
    body[method] = distance;
    documentElement[method] = distance;
  }
}

export { useScrollIntoView };
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