@nteract/mathjax
Version:
React components for MathJax
145 lines (144 loc) • 4.83 kB
JavaScript
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.MathJaxNode_ = void 0;
const React = __importStar(require("react"));
const types = {
ascii: "asciimath",
tex: "tex",
};
const context_1 = __importDefault(require("./context"));
const provider_1 = __importDefault(require("./provider"));
class MathJaxNode_ extends React.Component {
constructor(props) {
super(props);
this.nodeRef = React.createRef();
this.typeset = this.typeset.bind(this);
this.clear = this.clear.bind(this);
}
/**
* Render the math once the node is mounted
*/
componentDidMount() {
setTimeout(() => this.typeset(), 0);
}
/**
* Update the jax, force update if the display mode changed
*/
componentDidUpdate(prevProps) {
const forceUpdate = prevProps.inline !== this.props.inline ||
prevProps.children !== this.props.children;
this.typeset(forceUpdate);
}
/**
* Clear the math when unmounting the node
*/
componentWillUnmount() {
this.clear();
}
/**
* Clear the jax
*/
clear() {
const MathJax = this.props.MathJax;
if (!MathJax) {
return;
}
if (!this.script) {
return;
}
const jax = MathJax.Hub.getJaxFor(this.script);
if (jax) {
jax.Remove();
}
}
/**
* Update math in the node
* @param { Boolean } forceUpdate
*/
typeset(forceUpdate = false) {
const { MathJax } = this.props;
if (!MathJax || !MathJax.Hub) {
throw Error("Could not find MathJax while attempting typeset! It's likely the MathJax script hasn't been loaded or MathJax.Context is not in the hierarchy.");
}
const text = this.props.children;
if (forceUpdate) {
this.clear();
}
if (forceUpdate || !this.script) {
this.setScriptText(text);
}
if (!this.script) {
return;
}
const reprocess = ["Reprocess", MathJax.Hub, this.script];
if (!this.props.onRender) {
MathJax.Hub.Queue(reprocess);
}
else {
MathJax.Hub.Queue(reprocess, this.props.onRender);
}
}
/**
* Create a script
* @param { String } text
*/
setScriptText(text) {
const inline = this.props.inline;
const type = types[this.props.input];
if (!this.script && this.nodeRef.current) {
this.script = document.createElement("script");
this.script.type = `math/${type}; ${inline ? "" : "mode=display"}`;
this.nodeRef.current.appendChild(this.script);
}
if (!this.script) {
return;
}
this.script.text = text;
}
render() {
return React.createElement("span", { ref: this.nodeRef });
}
}
exports.MathJaxNode_ = MathJaxNode_;
class MathJaxNode extends React.PureComponent {
render() {
return (React.createElement(context_1.default.Consumer, null, ({ MathJax, input, hasProviderAbove }) => {
// If there is no <Provider /> in the above tree, create our own
if (!hasProviderAbove) {
return (React.createElement(provider_1.default, null,
React.createElement(MathJaxNode, Object.assign({}, this.props))));
}
if (!MathJax) {
return null;
}
return (React.createElement(MathJaxNode_, { inline: this.props.inline, onRender: this.props.onRender, input: input, MathJax: MathJax, hasProviderAbove: hasProviderAbove }, this.props.children));
}));
}
}
exports.default = MathJaxNode;
MathJaxNode.defaultProps = {
inline: false,
onRender: null,
};