MDL-75940 editor_tiny: Allow administrators to disable Tiny branding

Part of MDL-75966

lib/editor/tiny/amd/src/editor.js

@@ -216,6 +216,7 @@ const getStandardConfig = (target, tinyMCE, options, plugins) => {
 
         // Disable quickbars entirely.
         // The UI is not ideal and we'll wait for it to improve in future before we enable it in Moodle.
+        // eslint-disable-next-line camelcase
         quickbars_insert_toolbar: '',
 
         // The list of plugins to include in the instance.
@@ -236,6 +237,10 @@ const getStandardConfig = (target, tinyMCE, options, plugins) => {
         // https://www.tiny.cloud/docs/tinymce/6/editor-premium-upgrade-promotion/
         promotion: false,
 
+        // Allow the administrator to disable branding.
+        // https://www.tiny.cloud/docs/tinymce/6/statusbar-configuration-options/#branding
+        branding: options.branding,
+
         setup: (editor) => {
             Options.register(editor, options);
         },

lib/editor/tiny/classes/editor.php

@@ -161,6 +161,7 @@ class editor extends \texteditor {
         }
 
         // Generate the configuration for this editor.
+        $siteconfig = get_config('editor_tiny');
         $config = (object) [
             // The URL to the CSS file for the editor.
             'css' => $PAGE->theme->editor_css_url()->out(false),
@@ -173,6 +174,8 @@ class editor extends \texteditor {
 
             'currentLanguage' => current_language(),
 
+            'branding' => property_exists($siteconfig, 'branding') ? !empty($siteconfig->branding) : true,
+
             // Language options.
             'language' => [
                 'currentlang' => current_language(),

lib/editor/tiny/lang/en/editor_tiny.php

@@ -23,7 +23,10 @@
  */
 
 $string['pluginname'] = 'TinyMCE editor';
+$string['settings'] = 'General settings';
 $string['privacy:reason'] = 'The TinyMCE Editor does not store any preferences or user data.';
+$string['branding'] = 'Tiny Branding';
+$string['branding_desc'] = 'Display TinyMCE Branding. We do encourage you to support TinyMCE by leaving this enabled.';
 $string['tiny:hash'] = '#';
 $string['tiny:accessibility'] = 'Accessibility';
 $string['tiny:action'] = 'Action';

lib/editor/tiny/settings.php

@@ -0,0 +1,52 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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.
+//
+// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Tiny admin settings.
+ *
+ * @package    editor_tiny
+ * @copyright  2022 Huong Nguyen <huongnv13@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+$ADMIN->add('editorsettings', new admin_category('editortiny', $editor->displayname, $editor->is_enabled() === false));
+
+$settings = new admin_settingpage('editorsettingstiny', new lang_string('settings', 'editor_tiny'));
+if ($ADMIN->fulltree) {
+    $setting = new admin_setting_configcheckbox(
+        'editor_tiny/branding',
+        new lang_string('branding', 'editor_tiny'),
+        new lang_string('branding_desc', 'editor_tiny'),
+        1
+    );
+
+    $settings->add($setting);
+}
+
+foreach (core_plugin_manager::instance()->get_plugins_of_type('tiny') as $plugin) {
+    /** @var \editor_tiny\plugininfo\tiny $plugin */
+    $plugin->load_settings($ADMIN, 'editortiny', $hassiteconfig);
+}
+
+// Note: We add editortiny to the settings page here manually rather than deferring to the plugininfo class.
+// This ensures that it shows in the category list too.
+$ADMIN->add('editortiny', $settings);
+
+// Required or the editor plugininfo will add this section twice.
+unset($settings);
+$settings = null;