@arco-design/web-react
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Arco Design React UI Library.
276 lines (275 loc) • 12.4 kB
JavaScript
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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}
return t;
};
return __assign.apply(this, arguments);
};
var __rest = (this && this.__rest) || function (s, e) {
var t = {};
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
t[p] = s[p];
if (s != null && typeof Object.getOwnPropertySymbols === "function")
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var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
import React, { forwardRef, useCallback, useContext, useEffect, useImperativeHandle, useRef, useState, } from 'react';
import throttle from 'lodash/throttle';
import compute from 'compute-scroll-into-view';
import scrollIntoViewIfNeeded from 'scroll-into-view-if-needed';
import { isFunction, isNumber, isWindow } from '../_util/is';
import { on, off } from '../_util/dom';
import cs from '../_util/classNames';
import useIsFirstRender from '../_util/hooks/useIsFirstRender';
import Affix from '../Affix';
import { ConfigContext } from '../ConfigProvider';
import AnchorContext from './context';
import { findNode, slide, getContainer, getContainerElement } from './utils';
import useStateWithPromise from '../_util/hooks/useStateWithPromise';
import Link from './link';
import useMergeProps from '../_util/hooks/useMergeProps';
var defaultProps = {
animation: true,
affix: true,
hash: true,
boundary: 'start',
};
function Anchor(baseProps, ref) {
var _a;
var _b = useContext(ConfigContext), getPrefixCls = _b.getPrefixCls, componentConfig = _b.componentConfig, rtl = _b.rtl;
var props = useMergeProps(baseProps, defaultProps, componentConfig === null || componentConfig === void 0 ? void 0 : componentConfig.Anchor);
var className = props.className, style = props.style, propScrollContainer = props.scrollContainer, _c = props.animation, animation = _c === void 0 ? true : _c, lineless = props.lineless, _d = props.affix, affix = _d === void 0 ? true : _d, affixStyle = props.affixStyle, offsetBottom = props.offsetBottom, offsetTop = props.offsetTop, _e = props.hash, willChangeHash = _e === void 0 ? true : _e, _f = props.boundary, boundary = _f === void 0 ? 'start' : _f, targetOffset = props.targetOffset, children = props.children, _g = props.direction, direction = _g === void 0 ? 'vertical' : _g, onSelect = props.onSelect, onChange = props.onChange, rest = __rest(props, ["className", "style", "scrollContainer", "animation", "lineless", "affix", "affixStyle", "offsetBottom", "offsetTop", "hash", "boundary", "targetOffset", "children", "direction", "onSelect", "onChange"]);
var prefixCls = getPrefixCls('anchor');
var classNames = cs(prefixCls, className, (_a = {},
_a[prefixCls + "-lineless"] = lineless,
_a[prefixCls + "-rtl"] = rtl,
_a[prefixCls + "-horizontal"] = direction === 'horizontal',
_a));
var wrapperRef = useRef(null);
var sliderLineRef = useRef(null);
var linkMap = useRef(new Map());
var isScrolling = useRef(false);
var scrollContainer = useRef(null);
// use this flag to trigger re-computing position of active link slider line
var _h = __read(useState(0), 2), flagUpdateSliderLine = _h[0], setFlagUpdateSliderLine = _h[1];
var _j = __read(useStateWithPromise(''), 2), currentLink = _j[0], setCurrentLink = _j[1];
var isFirstRender = useIsFirstRender();
useEffect(function () {
var container = getContainer(propScrollContainer);
scrollContainer.current = container;
}, [propScrollContainer]);
var getAffixTarget = useCallback(function () {
return getContainer(propScrollContainer);
}, [propScrollContainer]);
useImperativeHandle(ref, function () { return ({
dom: wrapperRef.current,
getRootDOMNode: function () { return wrapperRef.current; },
}); }, []);
function addLink(hash, element) {
if (hash) {
linkMap.current.set(hash, element);
setFlagUpdateSliderLine(Math.random());
}
}
function removeLink(hash) {
linkMap.current.delete(hash);
setFlagUpdateSliderLine(Math.random());
}
var setActiveLink = useCallback(function (hash) {
if (!hash || !wrapperRef.current)
return;
// Try to add when there is no corresponding link
if (!linkMap.current.has(hash)) {
var node_1 = findNode(wrapperRef.current, "a[data-href='" + hash + "']");
node_1 && addLink(hash, node_1);
}
var node = linkMap.current.get(hash);
if (node && hash !== currentLink) {
scrollIntoViewIfNeeded(node, {
behavior: 'auto',
block: 'nearest',
scrollMode: 'if-needed',
boundary: wrapperRef.current,
});
setCurrentLink(hash).then(function () {
isFunction(onChange) && onChange(hash, currentLink);
});
}
}, [currentLink, onChange]);
var getEleInViewport = useCallback(function () {
var result;
var startTop = isNumber(boundary) ? boundary : 0;
var container = scrollContainer.current;
var containerElement = getContainerElement(container);
var containerRect = containerElement.getBoundingClientRect();
var documentHeight = document.documentElement.clientHeight;
__spreadArray([], __read(linkMap.current.keys()), false).some(function (hash) {
var element = findNode(document, hash);
var inView = false;
if (element) {
var _a = element.getBoundingClientRect(), top_1 = _a.top, height = _a.height;
if (isWindow(container)) {
var innerTargetOffset = targetOffset !== null && targetOffset !== void 0 ? targetOffset : documentHeight / 2;
inView =
(top_1 >= startTop && top_1 <= innerTargetOffset) ||
(top_1 <= startTop && top_1 + height >= innerTargetOffset);
}
else {
var offsetTop_1 = top_1 - containerRect.top - startTop;
var innerTargetOffset = targetOffset !== null && targetOffset !== void 0 ? targetOffset : containerRect.height / 2;
inView =
(offsetTop_1 >= 0 && offsetTop_1 <= innerTargetOffset) ||
(offsetTop_1 <= 0 && offsetTop_1 + height >= innerTargetOffset);
}
if (inView) {
result = element;
}
}
return inView;
});
return result;
}, [boundary, targetOffset]);
var onScroll = useCallback(throttle(function () {
if (isScrolling.current)
return;
var element = getEleInViewport();
if (element && element.id) {
var hash = "#" + element.id;
setActiveLink(hash);
}
}, 30, { trailing: true }), [getEleInViewport, setActiveLink]);
function scrollIntoView(hash) {
if (!hash)
return;
try {
var element = findNode(document, hash);
if (!element)
return;
var block = isNumber(boundary) ? 'start' : boundary;
var offset_1 = isNumber(boundary) ? boundary : 0;
var actions = compute(element, { block: block });
if (!actions.length)
return;
var stopScroll_1 = false;
var promises = actions.map(function (_a) {
var el = _a.el, top = _a.top;
return new Promise(function (resolve) {
if (!stopScroll_1) {
if (el === scrollContainer.current) {
stopScroll_1 = true;
}
var targetTop = top - offset_1;
if (!animation) {
// Manually trigger scrolling as browser's default action is prevented when `props.hash` is false
if (!willChangeHash) {
el.scrollTop = targetTop;
}
return resolve(null);
}
return slide(el, targetTop, resolve);
}
resolve(null);
});
});
isScrolling.current = true;
Promise.all(promises).then(function () {
isScrolling.current = false;
});
}
catch (e) {
console.error(e);
}
}
function onLinkClick(e, hash) {
if (!willChangeHash) {
e.preventDefault();
}
setActiveLink(hash);
scrollIntoView(hash);
isFunction(onSelect) && onSelect(hash, currentLink);
}
useEffect(function () {
var hash = decodeURIComponent(location.hash);
if (hash) {
setActiveLink(hash);
scrollIntoView(hash);
}
else {
// compute current active anchor
onScroll();
}
}, []);
useEffect(function () {
if (!isFirstRender) {
onScroll();
}
on(scrollContainer.current, 'scroll', onScroll);
return function () {
off(scrollContainer.current, 'scroll', onScroll);
};
}, [propScrollContainer, onScroll]);
useEffect(function () {
var link = linkMap.current.get(currentLink);
if (link && !lineless && sliderLineRef.current) {
if (direction === 'horizontal') {
// if (rtl) {
// sliderLineRef.current.style.right = `${link.offsetLeft}px`;
// } else {
// }
sliderLineRef.current.style.left = link.offsetLeft + "px";
sliderLineRef.current.style.width = link.clientWidth + "px";
}
else {
sliderLineRef.current.style.top = link.offsetTop + "px";
}
}
}, [currentLink, lineless, direction, rtl, flagUpdateSliderLine]);
var content = (React.createElement("div", __assign({ className: classNames, style: style, ref: wrapperRef }, rest),
!lineless && currentLink && (React.createElement("div", { className: prefixCls + "-line-slider", ref: sliderLineRef })),
React.createElement(AnchorContext.Provider, { value: {
direction: direction,
currentLink: currentLink,
addLink: addLink,
removeLink: removeLink,
onLinkClick: onLinkClick,
} },
React.createElement("div", { className: prefixCls + "-list" }, children))));
return affix ? (React.createElement(Affix, { offsetTop: offsetTop, offsetBottom: offsetBottom, style: affixStyle, target: getAffixTarget }, content)) : (content);
}
var ForwardRefAnchor = forwardRef(Anchor);
var AnchorComponent = ForwardRefAnchor;
AnchorComponent.displayName = 'Anchor';
AnchorComponent.Link = Link;
export default AnchorComponent;