@antmjs/vantui
Version:
一套适用于Taro3及React的vantui组件库
200 lines (199 loc) • 8.38 kB
JavaScript
import _asyncToGenerator from "@babel/runtime/helpers/asyncToGenerator";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
import _slicedToArray from "@babel/runtime/helpers/slicedToArray";
import _regeneratorRuntime from "@babel/runtime/regenerator";
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
import { getCurrentPages, createIntersectionObserver, nextTick } from '@tarojs/taro';
import { View, Text } from '@tarojs/components';
import { useState, useCallback, useRef, useEffect, useImperativeHandle, forwardRef } from 'react';
import { Loading } from '../loading';
import { get } from '../default-props';
import { jsx as _jsx } from "react/jsx-runtime";
import { Fragment as _Fragment } from "react/jsx-runtime";
import { jsxs as _jsxs } from "react/jsx-runtime";
var clsPrefix = "van-infinite-scroll";
var compInitIndex = 0;
function InfiniteScroll_(props, ref) {
var _useState = useState(get().InfiniteScroll),
_useState2 = _slicedToArray(_useState, 1),
d = _useState2[0];
var _d$props = _objectSpread(_objectSpread({}, d), props),
renderLoading = _d$props.renderLoading,
renderComplete = _d$props.renderComplete,
renderError = _d$props.renderError,
parentClassName = _d$props.parentClassName,
loadMore = _d$props.loadMore,
_d$props$className = _d$props.className,
className = _d$props$className === void 0 ? '' : _d$props$className,
_d$props$completeText = _d$props.completeText,
completeText = _d$props$completeText === void 0 ? '没有更多了～' : _d$props$completeText,
_d$props$loadingText = _d$props.loadingText,
loadingText = _d$props$loadingText === void 0 ? '加载中...' : _d$props$loadingText,
_d$props$errorText = _d$props.errorText,
errorText = _d$props$errorText === void 0 ? '加载失败' : _d$props$errorText,
_d$props$reloadText = _d$props.reloadText,
reloadText = _d$props$reloadText === void 0 ? '重新加载' : _d$props$reloadText;
var _useState3 = useState('loading'),
_useState4 = _slicedToArray(_useState3, 2),
status = _useState4[0],
setStatus = _useState4[1];
var _useState5 = useState(false),
_useState6 = _slicedToArray(_useState5, 2),
onRequest = _useState6[0],
setOnRequest = _useState6[1];
var contentObserver = useRef();
var _useState7 = useState(compInitIndex++),
_useState8 = _slicedToArray(_useState7, 1),
compIndex = _useState8[0];
var thisDom = useRef();
var _useState9 = useState(0),
_useState10 = _slicedToArray(_useState9, 2),
forceKey = _useState10[0],
setForceKey = _useState10[1]; // 解决IntersectionObserver中执行loadmore时无法拿到最新的俩是state
var reset = useCallback(function (needLoad) {
return new Promise(function (resolve) {
nextTick(function () {
if (needLoad) setForceKey(Date.now());else setForceKey(0);
setStatus('loading');
setOnRequest(false);
resolve(null);
});
});
}, []);
var _loadMore = useCallback( /*#__PURE__*/function () {
var _ref = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime.mark(function _callee(immediately) {
var _status;
return _regeneratorRuntime.wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
if (!(!onRequest && status === 'loading' || immediately)) {
_context.next = 6;
break;
}
setOnRequest(true);
_context.next = 4;
return loadMore();
case 4:
_status = _context.sent;
// 确保等待渲染任务执行完成
setTimeout(function () {
nextTick(function () {
setStatus(_status);
setOnRequest(false);
});
}, 60);
case 6:
case "end":
return _context.stop();
}
}, _callee);
}));
return function (_x) {
return _ref.apply(this, arguments);
};
}(), [loadMore, onRequest, status]);
useEffect(function () {
return function () {
reset();
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, []);
useEffect(function () {
if (forceKey !== 0) _loadMore();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [forceKey]);
var initObserveH5 = useCallback(function () {
var options = {
threshold: [0.6]
};
if (parentClassName) options.root = document.getElementsByClassName(parentClassName)[0];
var contentObserver_ = new IntersectionObserver(function (res) {
var target = res[0];
if (target && target.intersectionRatio >= 0.6) {
setForceKey(Math.random() + target.time);
}
}, options);
contentObserver.current = contentObserver_;
contentObserver.current.observe(thisDom.current);
}, [parentClassName]);
var initObserve = useCallback(function () {
if (contentObserver.current != null) {
contentObserver.current.disconnect();
}
if (process.env.TARO_ENV === 'h5') {
return initObserveH5();
}
var pages = getCurrentPages();
var curePage = pages[pages.length - 1];
var _createIntersectionObserver = curePage.createIntersectionObserver;
if (process.env.TARO_ENV === 'alipay' || process.env.TARO_ENV === 'dd') {
_createIntersectionObserver = createIntersectionObserver;
}
var contentObserver_ = _createIntersectionObserver({
thresholds: [0.6]
});
contentObserver.current = contentObserver_;
if (parentClassName) {
contentObserver.current.relativeTo(".".concat(parentClassName));
} else {
contentObserver.current.relativeToViewport({
bottom: 0
});
}
contentObserver.current.observe(".".concat(clsPrefix).concat(compIndex), function (res) {
if (res.intersectionRatio > 0) {
setForceKey(Math.random() + res.time);
}
});
}, [compIndex, initObserveH5, parentClassName]);
useEffect(function () {
setTimeout(function () {
initObserve();
}, 66);
return function () {
if (contentObserver.current != null) {
contentObserver.current.disconnect();
}
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, []);
var retry = useCallback(function () {
reset();
_loadMore(true);
}, [_loadMore, reset]);
useImperativeHandle(ref, function () {
return {
reset: reset
};
});
return /*#__PURE__*/_jsxs(View, {
className: "".concat(clsPrefix, " ").concat(clsPrefix).concat(compIndex, " ").concat(className),
ref: thisDom,
children: [status === 'loading' && /*#__PURE__*/_jsx(_Fragment, {
children: renderLoading || /*#__PURE__*/_jsx(Loading, {
size: 24,
className: "".concat(clsPrefix, "-loading"),
children: loadingText
})
}), status === 'complete' && /*#__PURE__*/_jsx(_Fragment, {
children: renderComplete || /*#__PURE__*/_jsx(View, {
className: "".concat(clsPrefix, "-complete"),
children: completeText
})
}), status === 'error' && /*#__PURE__*/_jsx(_Fragment, {
children: renderError || /*#__PURE__*/_jsxs(View, {
className: "".concat(clsPrefix, "-error"),
children: [/*#__PURE__*/_jsx(Text, {
children: errorText
}), /*#__PURE__*/_jsx(Text, {
className: "reload-btn",
onClick: retry,
children: reloadText
})]
})
})]
});
}
export var InfiniteScroll = /*#__PURE__*/forwardRef(InfiniteScroll_);
export default InfiniteScroll;