grapesjs/src/dom_components/view/ComponentImageView.js

import { isString } from 'underscore';
const ComponentView = require('./ComponentView');

module.exports = ComponentView.extend({
  tagName: 'img',

  events: {
    dblclick: 'onActive',
    click: 'initResize',
    error: 'onError'
  },

  initialize(o) {
    const model = this.model;
    ComponentView.prototype.initialize.apply(this, arguments);
    this.listenTo(model, 'change:src', this.updateSrc);
    this.classEmpty = `${this.ppfx}plh-image`;
    const config = this.config;
    config.modal && (this.modal = config.modal);
    config.am && (this.am = config.am);
    this.fetchFile();
  },

  /**
   * Fetch file if exists
   */
  fetchFile() {
    const model = this.model;
    const file = model.get('file');

    if (file) {
      const fu = this.em.get('AssetManager').FileUploader();
      fu.uploadFile(
        {
          dataTransfer: { files: [file] }
        },
        res => {
          const obj = res && res.data && res.data[0];
          const src = obj && (isString(obj) ? obj : obj.src);
          src && model.set({ src });
        }
      );
      model.set('file', '');
    }
  },

  /**
   * Update src attribute
   * @private
   * */
  updateSrc() {
    const { model, classEmpty, $el } = this;
    const src = model.getSrcResult();
    const srcExists = src && !model.isDefaultSrc();
    model.addAttributes({ src });
    $el[srcExists ? 'removeClass' : 'addClass'](classEmpty);
  },

  /**
   * Open dialog for image changing
   * @param  {Object}  e  Event
   * @private
   * */
  onActive(ev) {
    ev && ev.stopPropagation();
    var em = this.opts.config.em;
    var editor = em ? em.get('Editor') : '';

    if (editor && this.model.get('editable')) {
      editor.runCommand('open-assets', {
        target: this.model,
        types: ['image'],
        accept: 'image/*',
        onSelect() {
          editor.Modal.close();
          editor.AssetManager.setTarget(null);
        }
      });
    }
  },

  onError() {
    const fallback = this.model.getSrcResult({ fallback: 1 });
    if (fallback) this.el.src = fallback;
  },

  render() {
    this.renderAttributes();
    this.updateSrc();
    const { $el, model } = this;
    const cls = $el.attr('class') || '';
    !model.get('src') && $el.attr('class', `${cls} ${this.classEmpty}`.trim());
    // Avoid strange behaviours with drag and drop
    $el.attr('onmousedown', 'return false');
    this.postRender();

    return this;
  }
});