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70 lines
2.3 KiB
TypeScript
70 lines
2.3 KiB
TypeScript
/*
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Copyright (c) Microsoft Corporation.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import './source.css';
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import * as React from 'react';
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import * as highlightjs from '../../third_party/highlightjs/highlightjs';
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import '../../third_party/highlightjs/highlightjs/tomorrow.css';
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export type SourceHighlight = {
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line: number;
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type: 'running' | 'paused' | 'error';
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};
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export interface SourceProps {
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text: string;
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language: string;
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// 1-based
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highlight?: SourceHighlight[];
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revealLine?: number;
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}
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export const Source: React.FC<SourceProps> = ({
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text,
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language,
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highlight = [],
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revealLine
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}) => {
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const lines = React.useMemo<string[]>(() => {
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const result = [];
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let continuation: any;
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for (const line of text.split('\n')) {
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const highlighted = highlightjs.highlight(language, line, true, continuation);
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continuation = highlighted.top;
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result.push(highlighted.value);
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}
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return result;
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}, [text, language]);
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const revealedLineRef = React.createRef<HTMLDivElement>();
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React.useLayoutEffect(() => {
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if (typeof revealLine === 'number' && revealedLineRef.current)
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revealedLineRef.current.scrollIntoView({ block: 'center', inline: 'nearest' });
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}, [revealedLineRef, revealLine]);
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return <div className='source'>{
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lines.map((markup, index) => {
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const lineNumber = index + 1;
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const lineHighlight = highlight.find(h => h.line === lineNumber);
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const lineClass = lineHighlight ? `source-line source-line-${lineHighlight.type}` : 'source-line';
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return <div key={lineNumber} className={lineClass} ref={revealLine === lineNumber ? revealedLineRef : null}>
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<div className='source-line-number'>{lineNumber}</div>
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<div className='source-code' dangerouslySetInnerHTML={{ __html: markup }}></div>
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</div>;
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})
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}</div>;
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};
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