debian-mirror-gitlab/app/assets/javascripts/behaviors/markdown/nodes/image.js

/* eslint-disable class-methods-use-this */

import { defaultMarkdownSerializer } from 'prosemirror-markdown';
import { Image as BaseImage } from 'tiptap-extensions';
import { placeholderImage } from '~/lazy_loader';
import { HIGHER_PARSE_RULE_PRIORITY } from '../constants';

export default class Image extends BaseImage {
  get schema() {
    return {
      attrs: {
        src: {},
        alt: {
          default: null,
        },
        title: {
          default: null,
        },
      },
      group: 'inline',
      inline: true,
      draggable: true,
      parseDOM: [
        // Matches HTML generated by Banzai::Filter::ImageLinkFilter
        {
          tag: 'a.no-attachment-icon',
          priority: HIGHER_PARSE_RULE_PRIORITY,
          skip: true,
        },
        // Matches HTML generated by Banzai::Filter::ImageLazyLoadFilter
        {
          tag: 'img[src]',
          getAttrs: (el) => {
            const imageSrc = el.src;
            const imageUrl =
              imageSrc && imageSrc !== placeholderImage ? imageSrc : el.dataset.src || '';

            return {
              src: imageUrl,
              title: el.getAttribute('title'),
              alt: el.getAttribute('alt'),
            };
          },
        },
      ],
      toDOM: (node) => ['img', node.attrs],
    };
  }

  toMarkdown(state, node) {
    defaultMarkdownSerializer.nodes.image(state, node);
  }
}