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Display error Mathjax correctly

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This commit is contained in:
Henrik Giesel 2021-08-07 19:13:08 +02:00
parent c88223e069
commit fca31465b4
1 changed files with 7 additions and 8 deletions
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15
ts/editable/mathjax.ts
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@ -4,11 +4,10 @@
import { mathIcon } from "./icons"; import { mathIcon } from "./icons";
const parser = new DOMParser(); const parser = new DOMParser();
const errorPattern = /<title>(.*?)<\/title>/gsu;
function getStyle(): HTMLStyleElement { function getStyle(): HTMLStyleElement {
const style = document.createElement("style") as HTMLStyleElement; const style = document.createElement("style") as HTMLStyleElement;
const css = `svg { color: white; fill: white; font-size: 20px; }`; const css = `svg { color: white; font-size: 20px; }`;
style.appendChild(document.createTextNode(css)); style.appendChild(document.createTextNode(css));
return style; return style;
@ -36,13 +35,13 @@ export function convertMathjax(input: string): string {
return getEmptyIcon(); return getEmptyIcon();
} }
if (!svg.innerHTML.includes("data-mjx-error")) { if (svg.innerHTML.includes("data-mjx-error")) {
svg.querySelector("rect").setAttribute("fill", "yellow");
svg.querySelector("text").setAttribute("color", "red");
} else {
const style = getStyle(); const style = getStyle();
svg.insertBefore(style, svg.children[0]); svg.insertBefore(style, svg.children[0]);
return svg.outerHTML;
} else {
const match = errorPattern.exec(svg.innerHTML);
throw match ? match[1] : "Unknown error";
} }
return svg.outerHTML;
} }