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57 lines
1.6 KiB
TypeScript
57 lines
1.6 KiB
TypeScript
import { useEffect, useState, useMemo } from 'react';
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const md5 = require('md5');
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// eslint-disable-next-line @typescript-eslint/ban-types -- Old code before rule was applied
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export default function(frameWindow: any, isReady: boolean, postMessage: Function, html: string) {
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const [loadedHtmlHash, setLoadedHtmlHash] = useState('');
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const htmlHash = useMemo(() => {
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return md5(html);
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}, [html]);
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useEffect(() => {
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if (!frameWindow) return () => {};
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function onMessage(event: any) {
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const data = event.data;
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if (!data || data.target !== 'UserWebview') return;
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// eslint-disable-next-line no-console
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console.info('useHtmlLoader: message', data);
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// We only update if the HTML that was loaded is the same as
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// the active one. Otherwise it means the content has been
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// changed between the moment it was set by the user and the
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// moment it was loaded in the view.
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if (data.message === 'htmlIsSet' && data.hash === htmlHash) {
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setLoadedHtmlHash(data.hash);
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}
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}
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frameWindow.addEventListener('message', onMessage);
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return () => {
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if (frameWindow.removeEventListener) frameWindow.removeEventListener('message', onMessage);
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};
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}, [frameWindow, htmlHash]);
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useEffect(() => {
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// eslint-disable-next-line no-console
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console.info('useHtmlLoader: isReady', isReady);
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if (!isReady) return;
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// eslint-disable-next-line no-console
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console.info('useHtmlLoader: setHtml', htmlHash);
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postMessage('setHtml', {
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hash: htmlHash,
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html: html,
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});
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// eslint-disable-next-line @seiyab/react-hooks/exhaustive-deps -- Old code before rule was applied
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}, [html, htmlHash, isReady]);
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return loadedHtmlHash;
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}
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