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Render math in on-hover documentation (#1566)

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Jonatan Kłosko 2022-12-06 15:23:54 +01:00 committed by GitHub
parent 52d6835388
commit 9d805d8c60
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1 changed files with 29 additions and 0 deletions
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29
assets/js/hooks/cell_editor/live_editor.js
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@ -1,3 +1,5 @@
import renderMathInElement from "katex/contrib/auto-render";
import monaco from "./live_editor/monaco";
import EditorClient from "./live_editor/editor_client";
import MonacoEditorAdapter from "./live_editor/monaco_editor_adapter";
@ -384,6 +386,33 @@ class LiveEditor {
};
this.editor.getModel().__getHover__ = (model, position) => {
// On the first hover, we setup a listener to postprocess hover
// content with KaTeX. Prior to that, the hover element is not
// in the DOM
this.hoverContentProcessed = false;
if (!this.hoverContentEl) {
this.hoverContentEl = this.container.querySelector(
".monaco-hover-content"
);
if (this.hoverContentEl) {
new MutationObserver((event) => {
// We mutate the DOM, so we use a flag to ignore events
// that we triggered ourselves
if (!this.hoverContentProcessed) {
renderMathInElement(this.hoverContentEl);
this.hoverContentProcessed = true;
}
}).observe(this.hoverContentEl, { childList: true });
} else {
console.warn(
"Could not find an element matching .monaco-hover-content"
);
}
}
const line = model.getLineContent(position.lineNumber);
const column = position.column;