Created
August 22, 2023 19:12
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Save mendes5/6ed96f3be95eacdce9d006f3ecbf6a01 to your computer and use it in GitHub Desktop.
Allows to print a JSX subtree, usefull for export as PDF functionality.
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| const useExport = (tree, documentTitle, ready) => { | |
| const containerRef = useRef(null); | |
| const frameRef = useRef(); | |
| const [readyToExport, setReadyToExport] = useState(false); | |
| useEffect(() => { | |
| if (!ready) return; | |
| const sheet = new ServerStyleSheet(); | |
| const out = ReactDOM.renderToString( | |
| sheet.collectStyles( | |
| <ThemeProvider> | |
| <html lang="en"> | |
| <head> | |
| <title>{documentTitle}</title> | |
| </head> | |
| <body>{tree}</body> | |
| </html> | |
| </ThemeProvider> | |
| ) | |
| ); | |
| const domParser = new DOMParser(); | |
| const dom = domParser.parseFromString(out, 'text/html'); | |
| const css = sheet.instance.toString(); | |
| const style = document.createElement('style'); | |
| style.innerHTML = css; | |
| dom.head.appendChild(style); | |
| const xml = new XMLSerializer().serializeToString(dom); | |
| const frame = document.createElement('iframe'); | |
| frame.setAttribute('srcdoc', xml); | |
| frameRef.current = frame; | |
| if (containerRef.current) { | |
| containerRef.current?.appendChild(frame); | |
| requestAnimationFrame(() => { | |
| setReadyToExport(true); | |
| }); | |
| } | |
| return () => { | |
| frameRef.current = null; | |
| frame.remove(); | |
| }; | |
| }, [documentTitle, tree]); | |
| return { | |
| exportDocument: () => frameRef.current.contentWindow?.print(), | |
| readyToExport, | |
| containerRef, | |
| }; | |
| }; |
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