61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
/**
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* Mermaid-js loader
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*/
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const MERMAID = 'mermaid';
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const themeMapper = Theme.getThemeMapper('default', 'dark');
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function refreshTheme(event) {
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if (event.source === window && event.data && event.data.id === Theme.ID) {
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// Re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344>
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const mermaidList = document.getElementsByClassName(MERMAID);
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[...mermaidList].forEach((elem) => {
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const svgCode = elem.previousSibling.children.item(0).textContent;
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elem.textContent = svgCode;
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elem.removeAttribute('data-processed');
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});
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const newTheme = themeMapper[Theme.visualState];
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mermaid.initialize({ theme: newTheme });
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mermaid.init(null, `.${MERMAID}`);
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}
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}
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function setNode(elem) {
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const svgCode = elem.textContent;
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const backup = elem.parentElement;
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backup.classList.add('d-none');
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// Create mermaid node
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const mermaid = document.createElement('pre');
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mermaid.classList.add(MERMAID);
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const text = document.createTextNode(svgCode);
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mermaid.appendChild(text);
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backup.after(mermaid);
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}
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export function loadMermaid() {
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if (
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typeof mermaid === 'undefined' ||
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typeof mermaid.initialize !== 'function'
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) {
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return;
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}
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const initTheme = themeMapper[Theme.visualState];
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let mermaidConf = {
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theme: initTheme
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};
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const basicList = document.getElementsByClassName('language-mermaid');
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[...basicList].forEach(setNode);
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mermaid.initialize(mermaidConf);
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if (Theme.switchable) {
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window.addEventListener('message', refreshTheme);
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}
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}
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