@ant-design/pro-layout
Version:
155 lines (152 loc) • 6.63 kB
JavaScript
import _objectSpread from "@babel/runtime/helpers/esm/objectSpread2";
import _regeneratorRuntime from "@babel/runtime/helpers/esm/regeneratorRuntime";
import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
import _asyncToGenerator from "@babel/runtime/helpers/esm/asyncToGenerator";
import { ProProvider } from '@ant-design/pro-provider';
import { useDebounceFn } from '@ant-design/pro-utils';
import classNames from 'classnames';
import React, { useContext, useEffect, useMemo, useRef } from 'react';
import { AsyncContentPanel } from "./AsyncContentPanel";
import { ProHelpProvide } from "./HelpProvide";
import { RenderContentPanel } from "./RenderContentPanel";
import { jsx as _jsx } from "react/jsx-runtime";
/**
* 控制具体的帮助文档显示组件
* selectedKey 来展示对应的内容。它会根据不同的item.valueType值来展示不同的内容，包括标题、图片、超链接等。
* @param ProHelpContentPanelProps
* @returns
*/
export var ProHelpContentPanel = function ProHelpContentPanel(_ref) {
var className = _ref.className,
parentItem = _ref.parentItem,
selectedKey = _ref.selectedKey,
onScroll = _ref.onScroll;
var _useContext = useContext(ProHelpProvide),
dataSource = _useContext.dataSource;
var _useContext2 = useContext(ProProvider),
hashId = _useContext2.hashId;
// 记录每个面板的滚动高度
var scrollHeightMap = useRef(new Map());
var divRef = useRef(null);
useEffect(function () {
if (!selectedKey || !(parentItem !== null && parentItem !== void 0 && parentItem.infiniteScrollFull)) return;
var div = scrollHeightMap.current.get(selectedKey);
if (div !== null && div !== void 0 && div.offsetTop && divRef.current) {
if (Math.abs(divRef.current.scrollTop - (div === null || div === void 0 ? void 0 : div.offsetTop) + 40) > (div === null || div === void 0 ? void 0 : div.clientHeight)) {
divRef.current.scrollTop = (div === null || div === void 0 ? void 0 : div.offsetTop) - 40;
}
}
}, [selectedKey]);
/**
* debounce（防抖）处理滚动事件，并根据滚动位置来实现找到当前列表的 key
*/
var onScrollEvent = useDebounceFn( /*#__PURE__*/function () {
var _ref2 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(e) {
var dom, list;
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
dom = e === null || e === void 0 ? void 0 : e.target; // 根据滚动位置来找到当前列表的 key
list = Array.from(scrollHeightMap.current.entries()).find(function (_ref3) {
var _ref4 = _slicedToArray(_ref3, 2),
value = _ref4[1];
if ((dom === null || dom === void 0 ? void 0 : dom.scrollTop) < value.offsetTop) {
return true;
}
return false;
});
if (list) {
_context.next = 4;
break;
}
return _context.abrupt("return");
case 4:
// 如果获取的 key 和当前 key 不同丢弃掉
if (list.at(0) !== selectedKey) {
// 如果不同，则触发 onScroll 事件
onScroll === null || onScroll === void 0 || onScroll(list.at(0));
}
case 5:
case "end":
return _context.stop();
}
}, _callee);
}));
return function (_x) {
return _ref2.apply(this, arguments);
};
}(), 200);
/**
* 当 parentItem 组件中的 infiniteScrollFull 属性变化时
* 如果该属性为真值，则开始监听滚动事件；
* 如果为假值，则停止监听滚动事件并取消防抖处理。
* 在监听滚动事件时，可以实现分页（瀑布流）效果。同时，该代码还会根据 selectedKey 的变化来触发跳转
*/
useEffect(function () {
var _divRef$current;
if (!(parentItem !== null && parentItem !== void 0 && parentItem.infiniteScrollFull)) return;
onScrollEvent.cancel();
(_divRef$current = divRef.current) === null || _divRef$current === void 0 || _divRef$current.addEventListener('scroll', onScrollEvent.run, false);
return function () {
var _divRef$current2;
onScrollEvent.cancel();
(_divRef$current2 = divRef.current) === null || _divRef$current2 === void 0 || _divRef$current2.removeEventListener('scroll', onScrollEvent.run, false);
};
}, [parentItem === null || parentItem === void 0 ? void 0 : parentItem.infiniteScrollFull, selectedKey]);
/**
* 生成一个 Map 能根据 key 找到所有的 index
*/
var dataSourceMap = useMemo(function () {
var map = new Map();
dataSource.forEach(function (page) {
page.children.forEach(function (item) {
map.set(item.key || item.title, _objectSpread(_objectSpread({}, item), {}, {
parentKey: page.key
}));
});
});
return map;
}, [dataSource]);
var renderItem = function renderItem(item) {
if (item !== null && item !== void 0 && item.asyncLoad) {
return /*#__PURE__*/_jsx("div", {
className: classNames(className, hashId),
id: item.title,
children: /*#__PURE__*/_jsx(AsyncContentPanel, {
item: item,
onInit: function onInit(ref) {
if (!scrollHeightMap.current) return;
scrollHeightMap.current.set(item.key, ref);
}
}, item === null || item === void 0 ? void 0 : item.key)
});
}
return /*#__PURE__*/_jsx("div", {
className: classNames(className, hashId),
id: item.title,
children: /*#__PURE__*/_jsx(RenderContentPanel, {
onInit: function onInit(ref) {
if (!scrollHeightMap.current) return;
scrollHeightMap.current.set(item.key, ref);
},
dataSourceChildren: (item === null || item === void 0 ? void 0 : item.children) || []
})
});
};
if (parentItem && parentItem.infiniteScrollFull) {
var _parentItem$children;
return /*#__PURE__*/_jsx("div", {
ref: divRef,
className: classNames("".concat(className, "-infinite-scroll"), hashId),
style: {
overflow: 'auto'
},
children: (_parentItem$children = parentItem.children) === null || _parentItem$children === void 0 ? void 0 : _parentItem$children.map(function (item) {
return /*#__PURE__*/_jsx(React.Fragment, {
children: renderItem(item)
}, item.key);
})
});
}
return renderItem(dataSourceMap.get(selectedKey));
};