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82 lines
2.1 KiB
82 lines
2.1 KiB
4 years ago
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import Parchment from 'parchment';
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import Quill from '../core/quill';
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import Module from '../core/module';
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import CodeBlock from '../formats/code';
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class SyntaxCodeBlock extends CodeBlock {
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replaceWith(block) {
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this.domNode.textContent = this.domNode.textContent;
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this.attach();
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super.replaceWith(block);
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}
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highlight(highlight) {
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let text = this.domNode.textContent;
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if (this.cachedText !== text) {
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if (text.trim().length > 0 || this.cachedText == null) {
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this.domNode.innerHTML = highlight(text);
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this.domNode.normalize();
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this.attach();
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}
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this.cachedText = text;
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}
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}
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}
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SyntaxCodeBlock.className = 'ql-syntax';
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let CodeToken = new Parchment.Attributor.Class('token', 'hljs', {
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scope: Parchment.Scope.INLINE
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});
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class Syntax extends Module {
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static register() {
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Quill.register(CodeToken, true);
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Quill.register(SyntaxCodeBlock, true);
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}
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constructor(quill, options) {
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super(quill, options);
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if (typeof this.options.highlight !== 'function') {
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throw new Error('Syntax module requires highlight.js. Please include the library on the page before Quill.');
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}
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let timer = null;
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this.quill.on(Quill.events.SCROLL_OPTIMIZE, () => {
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clearTimeout(timer);
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timer = setTimeout(() => {
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this.highlight();
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timer = null;
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}, this.options.interval);
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});
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this.highlight();
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}
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highlight() {
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if (this.quill.selection.composing) return;
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this.quill.update(Quill.sources.USER);
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let range = this.quill.getSelection();
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this.quill.scroll.descendants(SyntaxCodeBlock).forEach((code) => {
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code.highlight(this.options.highlight);
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});
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this.quill.update(Quill.sources.SILENT);
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if (range != null) {
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this.quill.setSelection(range, Quill.sources.SILENT);
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}
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}
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}
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Syntax.DEFAULTS = {
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highlight: (function() {
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if (window.hljs == null) return null;
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return function(text) {
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let result = window.hljs.highlightAuto(text);
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return result.value;
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};
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})(),
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interval: 1000
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};
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export { SyntaxCodeBlock as CodeBlock, CodeToken, Syntax as default};
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