/*eslint max-lines: ["warn", {"max": 300, "skipBlankLines": true, "skipComments": true}]*/ require('./brewRenderer.less'); const React = require('react'); const { useState, useRef, useEffect, useCallback } = React; const _ = require('lodash'); const MarkdownLegacy = require('naturalcrit/markdownLegacy.js'); const Markdown = require('naturalcrit/markdown.js'); const ErrorBar = require('./errorBar/errorBar.jsx'); const ToolBar = require('./toolBar/toolBar.jsx'); //TODO: move to the brew renderer const RenderWarnings = require('homebrewery/renderWarnings/renderWarnings.jsx'); const NotificationPopup = require('./notificationPopup/notificationPopup.jsx'); const Frame = require('react-frame-component').default; const dedent = require('dedent-tabs').default; const { printCurrentBrew } = require('../../../shared/helpers.js'); const DOMPurify = require('dompurify'); const purifyConfig = { FORCE_BODY: true, SANITIZE_DOM: false }; const PAGE_HEIGHT = 1056; const INITIAL_CONTENT = dedent`
`; //v=====----------------------< Brew Page Component >---------------------=====v// const BrewPage = (props)=>{ props = { contents : '', index : 0, ...props }; const cleanText = props.contents; //DOMPurify.sanitize(props.contents, purifyConfig); return
; }; //v=====--------------------< Brew Renderer Component >-------------------=====v// const renderedPages = []; let rawPages = []; const BrewRenderer = (props)=>{ props = { text : '', style : '', renderer : 'legacy', theme : '5ePHB', lang : '', errors : [], currentEditorCursorPageNum : 0, currentEditorViewPageNum : 0, currentBrewRendererPageNum : 0, themeBundle : {}, onPageChange : ()=>{}, ...props }; const [state, setState] = useState({ height : PAGE_HEIGHT, isMounted : false, visibility : 'hidden', zoom : 100 }); const mainRef = useRef(null); if(props.renderer == 'legacy') { rawPages = props.text.split('\\page'); } else { rawPages = props.text.split(/^\\page$/gm); } useEffect(()=>{ // Unmounting steps return ()=>{window.removeEventListener('resize', updateSize);}; }, []); const updateSize = ()=>{ setState((prevState)=>({ ...prevState, height : mainRef.current.parentNode.clientHeight, })); }; const updateCurrentPage = useCallback(_.throttle((e)=>{ const { scrollTop, clientHeight, scrollHeight } = e.target; const totalScrollableHeight = scrollHeight - clientHeight; const currentPageNumber = Math.max(Math.ceil((scrollTop / totalScrollableHeight) * rawPages.length), 1); props.onPageChange(currentPageNumber); }, 200), []); const isInView = (index)=>{ if(!state.isMounted) return false; if(index == props.currentEditorCursorPageNum - 1) //Already rendered before this step return false; if(Math.abs(index - props.currentBrewRendererPageNum - 1) <= 3) return true; return false; }; const renderDummyPage = (index)=>{ return
; }; const renderStyle = ()=>{ const cleanStyle = props.style; //DOMPurify.sanitize(props.style, purifyConfig); const themeStyles = props.themeBundle?.joinedStyles ?? ''; return
${cleanStyle} ` }} />; }; const renderPage = (pageText, index)=>{ if(props.renderer == 'legacy') { const html = MarkdownLegacy.render(pageText); return ; } else { 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) const html = Markdown.render(pageText, index); return ; } }; const renderPages = ()=>{ if(props.errors && props.errors.length) return renderedPages; if(rawPages.length != renderedPages.length) // Re-render all pages when page count changes renderedPages.length = 0; // Render currently-edited page first so cross-page effects (variables, links) can propagate out first renderedPages[props.currentEditorCursorPageNum - 1] = renderPage(rawPages[props.currentEditorCursorPageNum - 1], props.currentEditorCursorPageNum - 1); _.forEach(rawPages, (page, index)=>{ if((isInView(index) || !renderedPages[index]) && typeof window !== 'undefined'){ renderedPages[index] = renderPage(page, index); // Render any page not yet rendered, but only re-render those in PPR range } }); return renderedPages; }; const handleControlKeys = (e)=>{ if(!(e.ctrlKey || e.metaKey)) return; const P_KEY = 80; if(e.keyCode == P_KEY && props.allowPrint) printCurrentBrew(); if(e.keyCode == P_KEY) { e.stopPropagation(); e.preventDefault(); } }; const frameDidMount = ()=>{ //This triggers when iFrame finishes internal "componentDidMount" setTimeout(()=>{ //We still see a flicker where the style isn't applied yet, so wait 100ms before showing iFrame updateSize(); window.addEventListener('resize', updateSize); renderPages(); //Make sure page is renderable before showing setState((prevState)=>({ ...prevState, isMounted : true, visibility : 'visible' })); }, 100); }; const emitClick = ()=>{ // Allow clicks inside iFrame to interact with dropdowns, etc. from outside if(!window || !document) return; document.dispatchEvent(new MouseEvent('click')); }; //Toolbar settings: const handleZoom = (newZoom)=>{ setState((prevState)=>({ ...prevState, zoom : newZoom })); }; return ( <> {/*render dummy page while iFrame is mounting.*/} {!state.isMounted ?
{renderDummyPage(1)}
: null}
{/*render in iFrame so broken code doesn't crash the site.*/} {emitClick();}} >
{/* Apply CSS from Style tab and render pages from Markdown tab */} {state.isMounted && <> {renderStyle()}
{renderPages()}
}
); }; module.exports = BrewRenderer;