Daniel J. Geiger
33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
import { useEffect } from "react";
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import { ExcalidrawImperativeAPI } from "../../../../types";
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import { addSubtypeMethods } from "../../../../subtypes";
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import { getMathSubtypeRecord } from "./types";
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import { prepareMathSubtype } from "./implementation";
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export const MathJaxExtension = "mathjax";
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// Extension authors: provide a hook like `useMyExtension` in `myextension/index`
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export const useMathJaxExtension = (api: ExcalidrawImperativeAPI | null) => {
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const enabled = mathJaxExtensionLoadable;
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useEffect(() => {
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if (enabled && api) {
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const prep = api.addSubtype(getMathSubtypeRecord(), prepareMathSubtype);
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if (prep) {
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addSubtypeMethods(getMathSubtypeRecord().subtype, prep.methods);
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}
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}
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}, [enabled, api]);
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};
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// Extension authors: Use a variable like `myExtensionLoadable` to determine
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// whether or not to do anything in each of `useMyExtension` and `testMyExtension`.
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let mathJaxExtensionLoadable = false;
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export const getMathJaxExtensionLoadable = () => {
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return mathJaxExtensionLoadable;
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};
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export const setMathJaxExtensionLoadable = (loadable: boolean) => {
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mathJaxExtensionLoadable = loadable;
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};
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