tntd
Version:
tntd是基于 TNT Design 设计体系的 React UI 组件库，主要用于研发企业级中后台产品。
114 lines (113 loc) • 4.38 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _debounce2 = _interopRequireDefault(require("lodash/debounce"));
var _throttle2 = _interopRequireDefault(require("lodash/throttle"));
var _react = require("react");
function _interopRequireDefault(e) {
return e && e.__esModule ? e : {
"default": e
};
}
function _slicedToArray(r, e) {
return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
}
function _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _unsupportedIterableToArray(r, a) {
if (r) {
if ("string" == typeof r) return _arrayLikeToArray(r, a);
var t = {}.toString.call(r).slice(8, -1);
return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
}
}
function _arrayLikeToArray(r, a) {
(null == a || a > r.length) && (a = r.length);
for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
return n;
}
function _iterableToArrayLimit(r, l) {
var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
if (null != t) {
var e,
n,
i,
u,
a = [],
f = !0,
o = !1;
try {
if (i = (t = t.call(r)).next, 0 === l) {
if (Object(t) !== t) return;
f = !1;
} else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0);
} catch (r) {
o = !0, n = r;
} finally {
try {
if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return;
} finally {
if (o) throw n;
}
}
return a;
}
}
function _arrayWithHoles(r) {
if (Array.isArray(r)) return r;
}
// ==================== 优化版 Hook ====================
var _default = exports["default"] = function _default(config) {
var _ref = config || {},
_ref$enableScrollObse = _ref.enableScrollObserver,
enableScrollObserver = _ref$enableScrollObse === void 0 ? true : _ref$enableScrollObse,
_ref$debounceTime = _ref.debounceTime,
debounceTime = _ref$debounceTime === void 0 ? 100 : _ref$debounceTime,
_ref$throttleTime = _ref.throttleTime,
throttleTime = _ref$throttleTime === void 0 ? 50 : _ref$throttleTime,
_ref$scrollContainer = _ref.scrollContainer,
scrollContainer = _ref$scrollContainer === void 0 ? window : _ref$scrollContainer;
var _useState = (0, _react.useState)(false),
_useState2 = _slicedToArray(_useState, 2),
isScrolling = _useState2[0],
setIsScrolling = _useState2[1];
var throttledHandlerRef = (0, _react.useRef)();
var debouncedEndRef = (0, _react.useRef)();
// ==================== 核心逻辑 ====================
var handleScroll = (0, _react.useCallback)(function () {
var _a;
// 标记开始滚动
setIsScrolling(true);
// 启动防抖结束检测
(_a = debouncedEndRef.current) === null || _a === void 0 ? void 0 : _a.cancel();
debouncedEndRef.current = (0, _debounce2["default"])(function () {
return setIsScrolling(false);
}, debounceTime);
debouncedEndRef.current();
}, [debounceTime]);
// ==================== 事件监听 ====================
(0, _react.useEffect)(function () {
var container = scrollContainer || window;
if (!container || !enableScrollObserver) return;
// 使用 lodash 节流包装处理函数
throttledHandlerRef.current = (0, _throttle2["default"])(handleScroll, throttleTime, {
leading: true,
trailing: true
});
var options = {
passive: true
};
container.addEventListener('scroll', throttledHandlerRef.current, options);
return function () {
var _a, _b;
// 清理事件和定时器
container.removeEventListener('scroll', throttledHandlerRef.current, options);
(_a = throttledHandlerRef.current) === null || _a === void 0 ? void 0 : _a.cancel();
(_b = debouncedEndRef.current) === null || _b === void 0 ? void 0 : _b.cancel();
};
}, [handleScroll, scrollContainer, enableScrollObserver, throttleTime]);
return isScrolling;
};