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import { lowlight } from 'lowlight/lib/core';
import { CodeBlockLowlight } from '@tiptap/extension-code-block-lowlight';
import { mergeAttributes, textblockTypeInputRule } from '@tiptap/core';
import { VueNodeViewRenderer } from '@tiptap/vue-2';
import languageLoader from '../services/code_block_language_loader';
import CodeBlockWrapper from '../components/wrappers/code_block.vue';
const extractLanguage = (element) => element.dataset.canonicalLang ?? element.getAttribute('lang');
export const backtickInputRegex = /^```([a-z]+)?[\s\n]$/;
export const tildeInputRegex = /^~~~([a-z]+)?[\s\n]$/;
export default CodeBlockLowlight.extend({
isolating: true,
exitOnArrowDown: false,
addOptions() {
return {
...this.parent?.(),
HTMLAttributes: {
dir: 'auto',
},
};
},
addAttributes() {
return {
language: {
default: null,
parseHTML: (element) => extractLanguage(element),
},
class: {
// eslint-disable-next-line @gitlab/require-i18n-strings
default: 'code highlight',
},
langParams: {
default: null,
parseHTML: (element) => element.dataset.langParams,
},
};
},
addInputRules() {
const getAttributes = (match) => languageLoader?.loadLanguageFromInputRule(match) || {};
return [
textblockTypeInputRule({
find: backtickInputRegex,
type: this.type,
getAttributes,
}),
textblockTypeInputRule({
find: tildeInputRegex,
type: this.type,
getAttributes,
}),
];
},
parseHTML() {
return [
{
tag: 'div.markdown-code-block',
skip: true,
},
{
tag: 'pre.js-syntax-highlight',
preserveWhitespace: 'full',
},
];
},
renderHTML({ HTMLAttributes }) {
return [
'pre',
{
...mergeAttributes(this.options.HTMLAttributes, HTMLAttributes),
class: `content-editor-code-block ${gon.user_color_scheme} ${HTMLAttributes.class}`,
},
['code', {}, 0],
];
},
addNodeView() {
return new VueNodeViewRenderer(CodeBlockWrapper);
},
addProseMirrorPlugins() {
const parentPlugins = this.parent?.() ?? [];
// We don't want TipTap's VSCode paste plugin to be loaded since
// it conflicts with our CopyPaste plugin.
const i = parentPlugins.findIndex((plugin) => plugin.key.includes('VSCode'));
if (i >= 0) parentPlugins.splice(i, 1);
return parentPlugins;
},
}).configure({ lowlight });
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