61 lines
1.4 KiB
JavaScript
61 lines
1.4 KiB
JavaScript
import { withPluginApi } from "discourse/lib/plugin-api";
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import loadScript from "discourse/lib/load-script";
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function ensureKaTeX() {
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return loadScript("/plugins/discourse-math/katex/katex.min.js").then(() => {
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return loadScript("/plugins/discourse-math/katex/katex.min.css", { css: true }).then(() => {
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return loadScript("/plugins/discourse-math/katex/mhchem.min.js")
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})
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})
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}
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function decorate(elem, isPreview) {
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const $elem = $(elem);
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const displayMode = elem.tagName === 'DIV';
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if ($elem.data("applied-katex")) {
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return;
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}
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$elem.data("applied-katex", true);
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if ($elem.hasClass("math")) {
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const text = $elem.text();
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$elem.text('');
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window.katex.render(text, elem, { displayMode });
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}
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}
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function katex($elem) {
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if (!$elem || !$elem.find) {
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return;
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}
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const mathElems = $elem.find(".math");
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if (mathElems.length > 0) {
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const isPreview = $elem.hasClass("d-editor-preview");
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ensureKaTeX().then(() => {
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mathElems.each((idx, elem) => decorate(elem, isPreview));
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});
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}
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}
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function initializeMath(api) {
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api.decorateCooked(function(elem) {
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katex(elem);
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});
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}
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export default {
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name: "apply-math-katex",
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initialize(container) {
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const siteSettings = container.lookup("site-settings:main");
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if (siteSettings.discourse_math_enabled && siteSettings.discourse_math_provider === 'katex') {
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withPluginApi("0.5", function(api) {
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initializeMath(api);
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});
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}
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}
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};
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