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   1  /**
   2   * @copyright  (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
   3   * @license    GNU General Public License version 2 or later; see LICENSE.txt
   4   */
   5  (() => {
   6  
   7    const options = window.Joomla.getOptions('xtd-readmore');
   8  
   9    window.insertReadmore = editor => {
  10      if (!options) {
  11        // Something went wrong!
  12        throw new Error('XTD Button \'read more\' not properly initialized');
  13      }
  14  
  15      const content = window.Joomla.editors.instances[editor].getValue();
  16  
  17      if (!content) {
  18        Joomla.editors.instances[editor].replaceSelection('<hr id="system-readmore">');
  19      } else if (content && !content.match(/<hr\s+id=("|')system-readmore("|')\s*\/*>/i)) {
  20        Joomla.editors.instances[editor].replaceSelection('<hr id="system-readmore">');
  21      } else {
  22        // @todo replace with joomla-alert
  23        alert(options.exists);
  24        return false;
  25      }
  26  
  27      return true;
  28    };
  29  })();