path: root/docusaurus/static/ajax/libs/wolfree/23.7.8/js/Placeholder.js

/**
 * @license
 * SPDX-License-Identifier: AGPL-3.0-or-later
 * This file is part of Wolfree.
 * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 */

// @ts-check

export default class Placeholder {
  className = "wolfree-placeholder";

  placeholderHTML = `
      <div class="${this.className}">
        <div>
          <div>
            <div><div></div></div>
            <div><div></div></div>
            <div><div></div></div>
          </div>
        </div>
      </div>
    `;

  insert = ({
    container = document.querySelector(
      "html > body > #__next > div > main > main > div:nth-of-type(1)"
    ),
  } = {}) => {
    try {
      return (
        container instanceof HTMLDivElement
          ? container.insertAdjacentHTML("afterend", this.placeholderHTML)
          : console.error({ container }),
        { container }
      );
    } catch (error) {
      return (
        console.error(
          { error },
          "Fail to insert the skeleton placeholder components."
        ),
        { error }
      );
    }
  };

  remove = ({
    allPlaceholders = document.querySelectorAll(
      `html > body > #__next > div > main > main > div.${this.className}`
    ),
  } = {}) => {
    try {
      return (
        console.assert(allPlaceholders.length === 1),
        allPlaceholders.forEach((placeholder) => placeholder.remove()),
        { allPlaceholders }
      );
    } catch (error) {
      return (
        console.error(
          { error },
          "Fail to remove the skeleton placeholder components."
        ),
        { error }
      );
    }
  };
}