94 lines
3.8 KiB
JavaScript
94 lines
3.8 KiB
JavaScript
"use strict";
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'use client';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.CompoundComponentContext = void 0;
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exports.useCompoundParent = useCompoundParent;
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var React = _interopRequireWildcard(require("react"));
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function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
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function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
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const CompoundComponentContext = exports.CompoundComponentContext = /*#__PURE__*/React.createContext(null);
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if (process.env.NODE_ENV !== 'production') {
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CompoundComponentContext.displayName = 'CompoundComponentContext';
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}
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/**
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* Sorts the subitems by their position in the DOM.
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*/
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function sortSubitems(subitems) {
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const subitemsArray = Array.from(subitems.keys()).map(key => {
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const subitem = subitems.get(key);
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return {
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key,
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subitem
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};
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});
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subitemsArray.sort((a, b) => {
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const aNode = a.subitem.ref.current;
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const bNode = b.subitem.ref.current;
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if (aNode === null || bNode === null || aNode === bNode) {
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return 0;
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}
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// eslint-disable-next-line no-bitwise
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return aNode.compareDocumentPosition(bNode) & Node.DOCUMENT_POSITION_PRECEDING ? 1 : -1;
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});
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return new Map(subitemsArray.map(item => [item.key, item.subitem]));
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}
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/**
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* Provides a way for a component to know about its children.
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*
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* Child components register themselves with the `useCompoundItem` hook, passing in arbitrary metadata to the parent.
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*
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* This is a more powerful altervantive to `children` traversal, as child components don't have to be placed
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* directly inside the parent component. They can be anywhere in the tree (and even rendered by other components).
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*
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* The downside is that this doesn't work with SSR as it relies on the useEffect hook.
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*
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* @ignore - internal hook.
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*/
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function useCompoundParent() {
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const [subitems, setSubitems] = React.useState(new Map());
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const subitemKeys = React.useRef(new Set());
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const deregisterItem = React.useCallback(function deregisterItem(id) {
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subitemKeys.current.delete(id);
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setSubitems(previousState => {
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const newState = new Map(previousState);
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newState.delete(id);
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return newState;
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});
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}, []);
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const registerItem = React.useCallback(function registerItem(id, item) {
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let providedOrGeneratedId;
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if (typeof id === 'function') {
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providedOrGeneratedId = id(subitemKeys.current);
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} else {
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providedOrGeneratedId = id;
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}
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subitemKeys.current.add(providedOrGeneratedId);
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setSubitems(previousState => {
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const newState = new Map(previousState);
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newState.set(providedOrGeneratedId, item);
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return newState;
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});
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return {
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id: providedOrGeneratedId,
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deregister: () => deregisterItem(providedOrGeneratedId)
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};
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}, [deregisterItem]);
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const sortedSubitems = React.useMemo(() => sortSubitems(subitems), [subitems]);
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const getItemIndex = React.useCallback(function getItemIndex(id) {
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return Array.from(sortedSubitems.keys()).indexOf(id);
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}, [sortedSubitems]);
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const contextValue = React.useMemo(() => ({
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getItemIndex,
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registerItem,
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totalSubitemCount: subitems.size
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}), [getItemIndex, registerItem, subitems.size]);
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return {
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contextValue,
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subitems: sortedSubitems
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};
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} |