Sindbad~EG File Manager

<?php

/**
 * ---------------------------------------------------------------------
 *
 * GLPI - Gestionnaire Libre de Parc Informatique
 *
 * http://glpi-project.org
 *
 * @copyright 2015-2022 Teclib' and contributors.
 * @copyright 2003-2014 by the INDEPNET Development Team.
 * @licence   https://www.gnu.org/licenses/gpl-3.0.html
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * ---------------------------------------------------------------------
 */

// Direct access to file
if (strpos($_SERVER['PHP_SELF'], 'entityCustomCssCode.php')) {
    $AJAX_INCLUDE = 1;
    include('../inc/includes.php');
    header("Content-Type: text/html; charset=UTF-8");
    Html::header_nocache();
}

$entity = new Entity();
$entity->getFromDB($_POST['entities_id']);

if (isset($_POST['enable_custom_css']) && isset($_POST['entities_id'])) {
    $enable_custom_css = $_POST['enable_custom_css'] == '1';

    if (Entity::CONFIG_PARENT == $_POST['enable_custom_css']) {
        $custom_css_code = Entity::getUsedConfig(
            'enable_custom_css',
            $entity->fields['entities_id'],
            'custom_css_code',
            ''
        );
    } else {
        $custom_css_code = $entity->fields['custom_css_code'];
    }

    $rand = mt_rand();

    echo '<textarea id="custom_css_code_' . $rand . '" name="custom_css_code" ';
    if (!$enable_custom_css) {
        echo 'disabled';
    }
    echo '>';
    echo Html::entities_deep($custom_css_code);
    echo '</textarea>';

    $editor_options = [
        'mode'               => 'text/css',
        'lineNumbers'        => true,

      // Autocomplete with CTRL+SPACE
        'extraKeys'          => [
            'Ctrl-Space' => 'autocomplete',
        ],

      // Code folding configuration
        'foldGutter' => true,
        'gutters'    => [
            'CodeMirror-linenumbers',
            'CodeMirror-foldgutter'
        ],
    ];
    if (!$enable_custom_css) {
        $editor_options['readOnly'] = 'nocursor'; // readonly and no type cursor if input disabled
    }

    echo Html::scriptBlock('
      $(function() {
         var textarea = document.getElementById("custom_css_code_' . $rand . '");
         var editor = CodeMirror.fromTextArea(textarea, ' . json_encode($editor_options) . ');

         // Fix bad display of gutter (see https://github.com/codemirror/CodeMirror/issues/3098 )
         setTimeout(function () {editor.refresh();}, 10);

         if (' . (!$enable_custom_css ? 'true' : 'false') . ') {
            $(textarea).siblings(".CodeMirror").addClass("input-disabled");
         }
      });
   ');
}