@lexical/react/LexicalTableOfContentsPlugin.prod.mjs

This package provides Lexical components and hooks for React applications.

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

import{useLexicalComposerContext as t}from"@lexical/react/LexicalComposerContext";import{$isHeadingNode as e,HeadingNode as r}from"@lexical/rich-text";import{$getNextRightPreorderNode as n}from"@lexical/utils";import{$getRoot as o,$isElementNode as i,$getNodeByKey as s,TextNode as f}from"lexical";import{useState as c,useEffect as l}from"react";function u(t){return[t.getKey(),t.getTextContent(),t.getTag()]}function g(t,e,r){if(null===e)return r;const n=u(e);let o=[];if(null===t){if(r.length>0&&r[0][0]===e.__key)return r;o=[n,...r]}else for(let i=0;i<r.length;i++){const s=r[i][0];if(o.push(r[i]),s===t.getKey()&&s!==e.getKey()){if(i+1<r.length&&r[i+1][0]===e.__key)return r;o.push(n)}}return o}function a(t,e){const r=[];for(const n of e)n[0]!==t&&r.push(n);return r}function d(t,e){const r=[];for(const n of e)n[0]===t.getKey()?r.push(u(t)):r.push(n);return r}function h(t,e,r){const n=[],o=u(e);t||n.push(o);for(const i of r)i[0]!==e.getKey()&&(n.push(i),t&&i[0]===t.getKey()&&n.push(o));return n}function p(t){let r=n(t);for(;null!==r&&!e(r);)r=n(r);return r}function m({children:n}){const[u,m]=c([]),[y]=t();return l((()=>{let t=[];y.getEditorState().read((()=>{const r=o().getChildren();for(const n of r)e(n)&&t.push([n.getKey(),n.getTextContent(),n.getTag()]);m(t)}));const n=y.registerUpdateListener((({editorState:r,dirtyElements:n})=>{r.read((()=>{const r=n=>{for(const o of n.getChildren())if(e(o)){const e=p(o);t=h(e,o,t),m(t)}else i(o)&&r(o)};o().getChildren().forEach((t=>{i(t)&&n.get(t.__key)&&r(t)}))}))})),c=y.registerMutationListener(r,(e=>{y.getEditorState().read((()=>{for(const[r,n]of e)if("created"===n){const e=s(r);if(null!==e){const r=p(e);t=g(r,e,t)}}else if("destroyed"===n)t=a(r,t);else if("updated"===n){const e=s(r);if(null!==e){const r=p(e);t=h(r,e,t)}}m(t)}))})),l=y.registerMutationListener(f,(r=>{y.getEditorState().read((()=>{for(const[n,o]of r)if("updated"===o){const r=s(n);if(null!==r){const n=r.getParentOrThrow();e(n)&&(t=d(n,t),m(t))}}}))}));return()=>{c(),l(),n()}}),[y]),n(u,y)}export{m as TableOfContentsPlugin};