91 lines
2.5 KiB
JavaScript
91 lines
2.5 KiB
JavaScript
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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exports.__esModule = true;
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exports.getDerivedStateForCascade = getDerivedStateForCascade;
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var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
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var _shallowEqual = _interopRequireDefault(require("../utils/shallowEqual"));
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var _stringToObject = _interopRequireDefault(require("../utils/stringToObject"));
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function getDerivedStateForCascade(nextProps, prevState, selectNodeValue, newChildren) {
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var data = nextProps.data,
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labelKey = nextProps.labelKey,
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valueKey = nextProps.valueKey,
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childrenKey = nextProps.childrenKey,
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value = nextProps.value;
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var activeItemValue = selectNodeValue || (typeof value === 'undefined' ? prevState.value : value);
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var nextItems = [];
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var nextPathItems = [];
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var findNode = function findNode(items) {
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var _loop = function _loop(i) {
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items[i] = (0, _stringToObject.default)(items[i], labelKey, valueKey);
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var children = items[i][childrenKey];
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if ((0, _shallowEqual.default)(items[i][valueKey], activeItemValue)) {
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return {
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v: {
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items: items,
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active: items[i]
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}
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};
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} else if (children) {
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var v = findNode(children);
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if (v) {
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nextItems.push(children.map(function (item) {
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return (0, _extends2.default)({}, (0, _stringToObject.default)(item, labelKey, valueKey), {
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parent: items[i]
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});
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}));
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nextPathItems.push(v.active);
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return {
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v: {
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items: items,
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active: items[i]
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}
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};
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}
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}
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};
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for (var i = 0; i < items.length; i += 1) {
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var _ret = _loop(i);
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if (typeof _ret === "object") return _ret.v;
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}
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return null;
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};
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var activeItem = findNode(data);
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nextItems.push(data);
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if (activeItem) {
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nextPathItems.push(activeItem.active);
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}
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/**
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* 如果是异步更新 data 后，获取到的一个 selectNodeValue，则不更新 activePaths
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* 但是需要更新 items， 因为这里的目的就是把异步更新后的的数据展示出来
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*/
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var cascadePathItems = nextPathItems.reverse();
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if (newChildren) {
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return {
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items: [].concat(nextItems.reverse(), [newChildren]),
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tempActivePaths: cascadePathItems
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};
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}
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return {
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items: nextItems.reverse(),
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tempActivePaths: null,
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activePaths: cascadePathItems
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};
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} |