54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
/*
|
|
Copyright 2017 Michael Telatynski <7t3chguy@gmail.com>
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
import React from 'react';
|
|
import { highlightBlock } from 'highlight.js';
|
|
import { replaceableComponent } from "../../../utils/replaceableComponent";
|
|
|
|
interface IProps {
|
|
className?: string;
|
|
children?: React.ReactNode;
|
|
}
|
|
|
|
@replaceableComponent("views.elements.SyntaxHighlight")
|
|
export default class SyntaxHighlight extends React.Component<IProps> {
|
|
private el: HTMLPreElement = null;
|
|
|
|
constructor(props: IProps) {
|
|
super(props);
|
|
}
|
|
|
|
// componentDidUpdate used here for reusability
|
|
public componentDidUpdate(): void {
|
|
if (this.el) highlightBlock(this.el);
|
|
}
|
|
|
|
// call componentDidUpdate because _ref is fired on initial render
|
|
// which does not fire componentDidUpdate
|
|
private ref = (el: HTMLPreElement): void => {
|
|
this.el = el;
|
|
this.componentDidUpdate();
|
|
};
|
|
|
|
public render(): JSX.Element {
|
|
const { className, children } = this.props;
|
|
|
|
return <pre className={`${className} mx_SyntaxHighlight`} ref={this.ref}>
|
|
<code>{ children }</code>
|
|
</pre>;
|
|
}
|
|
}
|
|
|