92 lines
3.3 KiB
JavaScript
92 lines
3.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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Object.defineProperty(exports, "useOptionWalker", {
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enumerable: true,
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get: function() {
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return useOptionWalker;
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}
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});
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const _interop_require_wildcard = require("@swc/helpers/_/_interop_require_wildcard");
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const _react = /*#__PURE__*/ _interop_require_wildcard._(require("react"));
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const _reactsharedcontexts = require("@fluentui/react-shared-contexts");
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const _reactutilities = require("@fluentui/react-utilities");
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function useOptionWalker(options) {
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const { matchOption } = options;
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const { targetDocument } = (0, _reactsharedcontexts.useFluent_unstable)();
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const treeWalkerRef = _react.useRef(null);
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const listboxRef = _react.useRef(null);
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const optionFilter = _react.useCallback((node)=>{
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if ((0, _reactutilities.isHTMLElement)(node) && matchOption(node)) {
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return NodeFilter.FILTER_ACCEPT;
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}
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return NodeFilter.FILTER_SKIP;
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}, [
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matchOption
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]);
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const setListbox = _react.useCallback((el)=>{
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if (el && targetDocument) {
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listboxRef.current = el;
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treeWalkerRef.current = targetDocument.createTreeWalker(el, NodeFilter.SHOW_ELEMENT, optionFilter);
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} else {
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listboxRef.current = null;
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}
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}, [
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targetDocument,
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optionFilter
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]);
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const optionWalker = _react.useMemo(()=>({
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first: ()=>{
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if (!treeWalkerRef.current || !listboxRef.current) {
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return null;
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}
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treeWalkerRef.current.currentNode = listboxRef.current;
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return treeWalkerRef.current.firstChild();
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},
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last: ()=>{
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if (!treeWalkerRef.current || !listboxRef.current) {
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return null;
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}
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treeWalkerRef.current.currentNode = listboxRef.current;
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return treeWalkerRef.current.lastChild();
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},
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next: ()=>{
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if (!treeWalkerRef.current) {
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return null;
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}
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return treeWalkerRef.current.nextNode();
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},
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prev: ()=>{
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if (!treeWalkerRef.current) {
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return null;
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}
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return treeWalkerRef.current.previousNode();
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},
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find: (predicate, startFrom)=>{
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if (!treeWalkerRef.current || !listboxRef.current) {
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return null;
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}
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const start = startFrom ? targetDocument === null || targetDocument === void 0 ? void 0 : targetDocument.getElementById(startFrom) : null;
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treeWalkerRef.current.currentNode = start !== null && start !== void 0 ? start : listboxRef.current;
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let cur = treeWalkerRef.current.currentNode;
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while(cur && !predicate(cur.id)){
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cur = treeWalkerRef.current.nextNode();
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}
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return cur;
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},
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setCurrent: (el)=>{
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if (!treeWalkerRef.current) {
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return;
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}
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treeWalkerRef.current.currentNode = el;
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}
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}), [
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targetDocument
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]);
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return {
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optionWalker,
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listboxCallbackRef: setListbox
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};
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}
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