mirror of
https://github.com/naturalcrit/homebrewery.git
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83244485ab
Keeps toolbar functions within the toolbar component and reduces props that need to be sent down.
274 lines
8.0 KiB
JavaScript
274 lines
8.0 KiB
JavaScript
/*eslint max-lines: ["warn", {"max": 300, "skipBlankLines": true, "skipComments": true}]*/
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require('./brewRenderer.less');
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const React = require('react');
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const { useState, useRef, useEffect } = React;
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const _ = require('lodash');
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const MarkdownLegacy = require('naturalcrit/markdownLegacy.js');
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const Markdown = require('naturalcrit/markdown.js');
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const ErrorBar = require('./errorBar/errorBar.jsx');
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const ToolBar = require('./toolBar/toolBar.jsx');
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//TODO: move to the brew renderer
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const RenderWarnings = require('homebrewery/renderWarnings/renderWarnings.jsx');
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const NotificationPopup = require('./notificationPopup/notificationPopup.jsx');
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const Frame = require('react-frame-component').default;
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const dedent = require('dedent-tabs').default;
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const { printCurrentBrew } = require('../../../shared/helpers.js');
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const DOMPurify = require('dompurify');
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const purifyConfig = { FORCE_BODY: true, SANITIZE_DOM: false };
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const PAGE_HEIGHT = 1056;
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const INITIAL_CONTENT = dedent`
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<!DOCTYPE html><html><head>
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<link href="//use.fontawesome.com/releases/v6.5.1/css/all.css" rel="stylesheet" type="text/css" />
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<link href="//fonts.googleapis.com/css?family=Open+Sans:400,300,600,700" rel="stylesheet" type="text/css" />
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<link href='/homebrew/bundle.css' type="text/css" rel='stylesheet' />
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<base target=_blank>
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</head><body style='overflow: hidden'><div></div></body></html>`;
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//v=====----------------------< Brew Page Component >---------------------=====v//
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const BrewPage = (props)=>{
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props = {
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contents : '',
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index : 0,
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...props
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};
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const cleanText = props.contents; //DOMPurify.sanitize(props.contents, purifyConfig);
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return <div className={props.className} id={`p${props.index + 1}`} >
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<div className='columnWrapper' dangerouslySetInnerHTML={{ __html: cleanText }} />
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</div>;
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};
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//v=====--------------------< Brew Renderer Component >-------------------=====v//
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const renderedPages = [];
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let rawPages = [];
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const BrewRenderer = (props)=>{
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props = {
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text : '',
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style : '',
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renderer : 'legacy',
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theme : '5ePHB',
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lang : '',
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errors : [],
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currentEditorPage : 0,
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themeBundle : {},
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...props
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};
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const [state, setState] = useState({
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viewablePageNumber : 0,
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height : PAGE_HEIGHT,
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isMounted : false,
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visibility : 'hidden',
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zoom : 100,
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currentPageNumber : 1,
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});
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const mainRef = useRef(null);
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if(props.renderer == 'legacy') {
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rawPages = props.text.split('\\page');
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} else {
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rawPages = props.text.split(/^\\page$/gm);
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}
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useEffect(()=>{ // Unmounting steps
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return ()=>{window.removeEventListener('resize', updateSize);};
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}, []);
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const updateSize = ()=>{
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setState((prevState)=>({
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...prevState,
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height : mainRef.current.parentNode.clientHeight,
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}));
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};
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const handleScroll = (e)=>{
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const target = e.target;
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setState((prevState)=>({
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...prevState,
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viewablePageNumber : Math.floor(target.scrollTop / target.scrollHeight * rawPages.length)
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}));
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getCurrentPage(e);
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};
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const getCurrentPage = (e) => {
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const target = e.target;
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const { scrollTop, clientHeight, scrollHeight } = target;
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const totalScrollableHeight = scrollHeight - clientHeight;
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const currentPageNumber = Math.ceil((scrollTop / totalScrollableHeight) * rawPages.length);
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setState((prevState) => ({
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...prevState,
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currentPageNumber: currentPageNumber || 1
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}));
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};
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const isInView = (index)=>{
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if(!state.isMounted)
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return false;
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if(index == props.currentEditorPage) //Already rendered before this step
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return false;
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if(Math.abs(index - state.viewablePageNumber) <= 3)
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return true;
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return false;
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};
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const renderPageInfo = ()=>{
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return <div className='pageInfo' ref={mainRef}>
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<div>
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{props.renderer}
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</div>
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<div>
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{state.viewablePageNumber + 1} / {rawPages.length}
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</div>
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</div>;
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};
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const renderDummyPage = (index)=>{
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return <div className='phb page' id={`p${index + 1}`} key={index}>
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<i className='fas fa-spinner fa-spin' />
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</div>;
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};
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const renderStyle = ()=>{
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const cleanStyle = props.style; //DOMPurify.sanitize(props.style, purifyConfig);
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const themeStyles = props.themeBundle?.joinedStyles ?? '<style>@import url("/themes/V3/Blank/style.css");</style>';
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return <div style={{ display: 'none' }} dangerouslySetInnerHTML={{ __html: `${themeStyles} \n\n <style> ${cleanStyle} </style>` }} />;
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};
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const renderPage = (pageText, index)=>{
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if(props.renderer == 'legacy') {
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const html = MarkdownLegacy.render(pageText);
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return <BrewPage className='page phb' index={index} key={index} contents={html} />;
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} else {
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pageText += `\n\n \n\\column\n `; //Artificial column break at page end to emulate column-fill:auto (until `wide` is used, when column-fill:balance will reappear)
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const html = Markdown.render(pageText, index);
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return <BrewPage className='page' index={index} key={index} contents={html} />;
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}
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};
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const renderPages = ()=>{
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if(props.errors && props.errors.length)
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return renderedPages;
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if(rawPages.length != renderedPages.length) // Re-render all pages when page count changes
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renderedPages.length = 0;
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// Render currently-edited page first so cross-page effects (variables, links) can propagate out first
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renderedPages[props.currentEditorPage] = renderPage(rawPages[props.currentEditorPage], props.currentEditorPage);
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_.forEach(rawPages, (page, index)=>{
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if((isInView(index) || !renderedPages[index]) && typeof window !== 'undefined'){
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renderedPages[index] = renderPage(page, index); // Render any page not yet rendered, but only re-render those in PPR range
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}
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});
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return renderedPages;
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};
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const handleControlKeys = (e)=>{
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if(!(e.ctrlKey || e.metaKey)) return;
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const P_KEY = 80;
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if(e.keyCode == P_KEY && props.allowPrint) printCurrentBrew();
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if(e.keyCode == P_KEY) {
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e.stopPropagation();
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e.preventDefault();
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}
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};
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const frameDidMount = ()=>{ //This triggers when iFrame finishes internal "componentDidMount"
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setTimeout(()=>{ //We still see a flicker where the style isn't applied yet, so wait 100ms before showing iFrame
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updateSize();
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window.addEventListener('resize', updateSize);
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renderPages(); //Make sure page is renderable before showing
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setState((prevState)=>({
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...prevState,
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isMounted : true,
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visibility : 'visible'
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}));
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}, 100);
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};
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const emitClick = ()=>{ // Allow clicks inside iFrame to interact with dropdowns, etc. from outside
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if(!window || !document) return;
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document.dispatchEvent(new MouseEvent('click'));
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};
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//Toolbar settings:
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const handleZoom = (newZoom) => {
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setState((prevState)=>({
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...prevState,
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zoom : newZoom
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}));
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};
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return (
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<>
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{/*render dummy page while iFrame is mounting.*/}
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{!state.isMounted
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? <div className='brewRenderer' onScroll={handleScroll}>
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<div className='pages'>
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{renderDummyPage(1)}
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</div>
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</div>
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: null}
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<ErrorBar errors={props.errors} />
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<div className='popups'>
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<RenderWarnings />
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<NotificationPopup />
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</div>
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<ToolBar onZoomChange={handleZoom} currentPage={state.currentPageNumber} totalPages={rawPages.length}/>
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{/*render in iFrame so broken code doesn't crash the site.*/}
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<Frame id='BrewRenderer' initialContent={INITIAL_CONTENT}
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style={{ width: '100%', height: '100%', visibility: state.visibility }}
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contentDidMount={frameDidMount}
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onClick={()=>{emitClick();}}
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>
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<div className={'brewRenderer'}
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onScroll={handleScroll}
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onKeyDown={handleControlKeys}
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tabIndex={-1}
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style={{ height: state.height }}>
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<ErrorBar errors={props.errors} />
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<div className='popups'>
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<RenderWarnings />
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<NotificationPopup />
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</div>
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{/* Apply CSS from Style tab and render pages from Markdown tab */}
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{state.isMounted
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&&
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<>
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{renderStyle()}
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<div className='pages' lang={`${props.lang || 'en'}`} style={{ zoom: `${state.zoom}%` }}>
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{renderPages()}
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</div>
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</>
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}
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</div>
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</Frame>
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{renderPageInfo()}
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</>
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);
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};
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module.exports = BrewRenderer;
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