first commit

lib/editor/tiny/classes/editor.php

@@ -0,0 +1,238 @@
+<?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/>.
+
+namespace editor_tiny;
+
+/**
+ * Tiny Editor.
+ *
+ * @package    editor_tiny
+ * @copyright  2021 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class editor extends \texteditor {
+
+    /** @var manager The Tiny Manager instace */
+    protected $manager;
+
+    /** @var \stdClass|null The default configuration to use if none is provided */
+    protected static $defaultconfiguration = null;
+
+    /**
+     * Instantiate the new editor instance.
+     */
+    public function __construct() {
+        $this->manager = new manager();
+    }
+
+    /**
+     * Set the default configuration for the editor.
+     *
+     * @param manager $manager The editor manager
+     */
+    public static function set_default_configuration(manager $manager): void {
+        global $PAGE;
+
+        if (self::is_default_configuration_set()) {
+            return;
+        }
+
+        $context = $PAGE->context;
+
+        $config = (object) [
+            'css' => $PAGE->theme->editor_css_url()->out(false),
+            'context' => $context->id,
+            'plugins' => $manager->get_plugin_configuration($context, [], []),
+        ];
+
+        $config = json_encode($config);
+        $inlinejs = <<<EOF
+            M.util.js_pending('editor_tiny/editor:defaultConfiguration');
+            require(['editor_tiny/editor'], (Tiny) => {
+                Tiny.configureDefaultEditor({$config});
+                M.util.js_complete('editor_tiny/editor:defaultConfiguration');
+            });
+        EOF;
+
+        $PAGE->requires->js_amd_inline($inlinejs);
+
+        self::$defaultconfiguration = $config;
+    }
+
+    /**
+     * Fetch the current defautl configuration.
+     *
+     * @return \stdClass|null The default configuration or null if not set.
+     */
+    public static function get_default_configuration(): ?\stdClass {
+        return self::$defaultconfiguration;
+    }
+
+    /**
+     * Reset the default configuration.
+     */
+    public static function reset_default_configuration(): void {
+        self::$defaultconfiguration = null;
+    }
+
+    /**
+     * Check if the default configuration is set.
+     *
+     * @return bool True if the default configuration is set.
+     */
+    public static function is_default_configuration_set(): bool {
+        return !empty(self::$defaultconfiguration);
+    }
+
+    /**
+     * Is the current browser supported by this editor?
+     *
+     * @return bool
+     */
+    public function supported_by_browser() {
+        return true;
+    }
+
+    /**
+     * List of supported text field formats.
+     *
+     * @return array
+     */
+    public function get_supported_formats() {
+        return [
+            FORMAT_HTML => FORMAT_HTML,
+        ];
+    }
+
+    /**
+     * Returns text format preferred by this editor.
+     *
+     * @return int
+     */
+    public function get_preferred_format() {
+        return FORMAT_HTML;
+    }
+
+    /**
+     * Does this editor support picking from repositories?
+     *
+     * @return bool
+     */
+    public function supports_repositories() {
+        return true;
+    }
+
+    /**
+     * Use this editor for given element.
+     *
+     * @param string $elementid
+     * @param array $options
+     * @param null $fpoptions
+     */
+    public function use_editor($elementid, array $options = null, $fpoptions = null) {
+        global $PAGE;
+
+        // Ensure that the default configuration is set.
+        self::set_default_configuration($this->manager);
+
+        if ($fpoptions === null) {
+            $fpoptions = [];
+        }
+
+        $context = $PAGE->context;
+
+        if (isset($options['context']) && ($options['context'] instanceof \context)) {
+            // A different context was provided.
+            // Use that instead.
+            $context = $options['context'];
+        }
+
+        // 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),
+
+            // The current context for this page or editor.
+            'context' => $context->id,
+
+            // File picker options.
+            'filepicker' => (object) $fpoptions,
+
+            // Default draft item ID.
+            'draftitemid' => 0,
+
+            'currentLanguage' => current_language(),
+
+            'branding' => property_exists($siteconfig, 'branding') ? !empty($siteconfig->branding) : true,
+
+            // Language options.
+            'language' => [
+                'currentlang' => current_language(),
+                'installed' => get_string_manager()->get_list_of_translations(true),
+                'available' => get_string_manager()->get_list_of_languages()
+            ],
+
+            // Placeholder selectors.
+            // Some contents (Example: placeholder elements) are only shown in the editor, and not to users. It is unrelated to the
+            // real display. We created a list of placeholder selectors, so we can decide to or not to apply rules, styles... to
+            // these elements.
+            // The default of this list will be empty.
+            // Other plugins can register their placeholder elements to placeholderSelectors list by calling
+            // editor_tiny/options::registerPlaceholderSelectors.
+            'placeholderSelectors' => [],
+
+            // Plugin configuration.
+            'plugins' => $this->manager->get_plugin_configuration($context, $options, $fpoptions, $this),
+        ];
+
+        if (defined('BEHAT_SITE_RUNNING') && BEHAT_SITE_RUNNING) {
+            // Add sample selectors for Behat test.
+            $config->placeholderSelectors = ['.behat-tinymce-placeholder'];
+        }
+
+        foreach ($fpoptions as $fp) {
+            // Guess the draftitemid for the editor.
+            // Note: This is the best we can do at the moment.
+            if (!empty($fp->itemid)) {
+                $config->draftitemid = $fp->itemid;
+                break;
+            }
+        }
+
+        $configoptions = json_encode(convert_to_array($config));
+
+        // Note: This is not ideal but the editor does not have control over any HTML output.
+        // The Editor API only allows you to run JavaScript.
+        // In the future we will extend the editor API to allow it to generate the textarea, or attributes to use in the
+        // textarea or its wrapper.
+        // For now we cannot use the `js_call_amd()` API call because it warns if the parameters passed exceed a
+        // relatively low character limit.
+        $config = json_encode($config);
+        $inlinejs = <<<EOF
+            M.util.js_pending('editor_tiny/editor');
+            require(['editor_tiny/editor'], (Tiny) => {
+                Tiny.setupForElementId({
+                    elementId: "{$elementid}",
+                    options: {$configoptions},
+                });
+                M.util.js_complete('editor_tiny/editor');
+            });
+        EOF;
+
+        $PAGE->requires->js_amd_inline($inlinejs);
+    }
+}

lib/editor/tiny/classes/manager.php

@@ -0,0 +1,587 @@
+<?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/>.
+
+namespace editor_tiny;
+
+use context;
+
+/**
+ * Tiny Editor Plugin manager.
+ *
+ * @package    editor_tiny
+ * @copyright  2021 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class manager {
+
+    /**
+     * Get the configuration for all plugins.
+     *
+     * @param context $context The context that the editor is used within
+     * @param array $options The options passed in when requesting the editor
+     * @param array $fpoptions The filepicker options passed in when requesting the editor
+     * @param  editor $editor The editor instance in which the plugin is initialised
+     */
+    public function get_plugin_configuration(
+        context $context,
+        array $options = [],
+        array $fpoptions = [],
+        ?editor $editor = null
+    ): array {
+        // Get the list of plugins.
+        // Note: Disabled plugins are already removed from this list.
+        $plugins = $this->get_shipped_plugins();
+
+        // Fetch configuration for Moodle plugins.
+        $moodleplugins = \core_component::get_plugin_list_with_class('tiny', 'plugininfo');
+        $enabledplugins = \editor_tiny\plugininfo\tiny::get_enabled_plugins();
+        foreach ($moodleplugins as $plugin => $classname) {
+            [, $pluginname] = explode('_', $plugin, 2);
+            if (!in_array($pluginname, $enabledplugins)) {
+                // This plugin has been disabled.
+                continue;
+            }
+
+            if (!is_a($classname, plugin::class, true)) {
+                // Skip plugins that do not implement the plugin interface.
+                debugging("Plugin {$plugin} does not implement the plugin interface", DEBUG_DEVELOPER);
+                continue;
+            }
+
+            if (!$classname::is_enabled($context, $options, $fpoptions, $editor)) {
+                // This plugin has disabled itself for some reason.
+                // This is typical for media plugins where there is no file storage.
+                continue;
+            }
+
+            // Get the plugin information, which includes the list of buttons, menu items, and configuration.
+            $plugininfo = $classname::get_plugin_info(
+                $context,
+                $options,
+                $fpoptions,
+                $editor
+            );
+
+            // We suffix the plugin name for Moodle plugins with /plugin to avoid conflicts with Tiny plugins.
+            $plugins["{$plugin}/plugin"] = $plugininfo;
+        }
+
+        return $plugins;
+    }
+
+    /**
+     * Get a list of the buttons provided by this plugin.
+     *
+     * @return string[]
+     */
+    protected function get_tinymce_buttons(): array {
+        // The following list is defined at:
+        // https://www.tiny.cloud/docs/advanced/available-toolbar-buttons/#thecoretoolbarbuttons.
+        return [
+            // These are always available, without requiring additional plugins.
+            'aligncenter',
+            'alignjustify',
+            'alignleft',
+            'alignnone',
+            'alignright',
+            'blockquote',
+            'backcolor',
+            'bold',
+            'copy',
+            'cut',
+            'fontselect',
+            'fontsizeselect',
+            'forecolor',
+            'formatselect',
+            'h1',
+            'h2',
+            'h3',
+            'h4',
+            'h5',
+            'h6',
+            'indent',
+            'italic',
+            'language',
+            'lineheight',
+            'newdocument',
+            'outdent',
+            'paste',
+            'redo',
+            'remove',
+            'removeformat',
+            'selectall',
+            'strikethrough',
+            'styleselect',
+            'subscript',
+            'superscript',
+            'underline',
+            'undo',
+            'visualaid',
+        ];
+    }
+
+    /**
+     * Get a list of the menu items provided by this plugin.
+     *
+     * @return string[]
+     */
+    protected function get_tinymce_menuitems(): array {
+        // The following list is defined at:
+        // https://www.tiny.cloud/docs/advanced/available-menu-items/#thecoremenuitems.
+        return [
+            'align' => 'format',
+            'backcolor' => 'format',
+            'blockformats' => 'format',
+            'bold' => 'format',
+            'codeformat' => 'format',
+            'copy' => 'copy',
+            'cut' => 'copy',
+            'forecolor' => 'format',
+            'formats' => 'format',
+            'fontformats' => 'format',
+            'fontsizes' => 'format',
+            'italic' => 'format',
+            'language' => 'format',
+            'lineheight' => 'format',
+            'newdocument' => 'file',
+            'paste' => 'copy',
+            'redo' => 'copy',
+            'removeformat' => 'format',
+            'selectall' => 'edit',
+            'strikethrough' => 'format',
+            'subscript' => 'format',
+            'superscript' => 'format',
+            'underline' => 'format',
+            'undo' => 'copy',
+            'visualaid' => 'view',
+        ];
+    }
+
+    /**
+     * Return a list of all available plugins, including both TinyMCE shipped, and Moodle add-onis.
+     *
+     * Each plugin is returned as an array element containing:
+     * - a list of buttons (if applicable); and
+     * - a list of menuitems (if applicable).
+     *
+     * Note: Not all plugins include buttons, and not all plugins include menuitems.
+     * These array keys are optional.
+     *
+     * @return array
+     */
+    protected function get_available_plugins(): array {
+        $plugins = $this->get_shipped_plugins();
+        $plugins += $this->get_moodle_plugins();
+
+        $disabledplugins = $this->get_disabled_tinymce_plugins();
+        $plugins = array_filter($plugins, function ($plugin) use ($disabledplugins) {
+            return !in_array($plugin, $disabledplugins);
+        }, ARRAY_FILTER_USE_KEY);
+
+        return $plugins;
+    }
+
+    /**
+     * Return a list of all available plugins built into TinyMCE and not shipped as separate Moodle plugins.
+     *
+     * Each plugin is returned as an array element containing:
+     * - a list of buttons (if applicable); and
+     * - a list of menuitems (if applicable).
+     *
+     * Note: Not all plugins include buttons, and not all plugins include menuitems.
+     * These array keys are optional.
+     *
+     * @return array
+     */
+    protected function get_shipped_plugins(): array {
+        $plugins = $this->get_tinymce_plugins();
+        if ($this->premium_plugins_enabled()) {
+            $plugins += $this->get_premium_plugins();
+        }
+
+        $disabledplugins = $this->get_disabled_tinymce_plugins();
+        return array_filter($plugins, function ($plugin) use ($disabledplugins) {
+            return !in_array($plugin, $disabledplugins);
+        }, ARRAY_FILTER_USE_KEY);
+    }
+
+    /**
+     * Get a list of the core plugins with their button, and menuitem, configuration.
+     *
+     * @return array[]
+     */
+    protected function get_tinymce_plugins(): array {
+        // The following list is defined at:
+        // https://www.tiny.cloud/docs/advanced/available-toolbar-buttons/#thecoretoolbarbuttons.
+        return [
+            'anchor' => [
+                'buttons' => [
+                    'anchor',
+                ],
+                'menuitems' => [
+                    'anchor' => 'insert',
+                ],
+            ],
+            'autosave' => [
+                'buttons' => [
+                    'restoredraft',
+                ],
+                'menuitems' => [
+                    'restoredraft' => 'file',
+                ],
+            ],
+            'charmap' => [
+                'buttons' => [
+                    'charmap',
+                ],
+                'menuitems' => [
+                    'charmap' => 'insert',
+                ],
+            ],
+            'code' => [
+                'buttons' => [
+                    'code',
+                ],
+                'menuitems' => [
+                    'code' => 'view',
+                ],
+            ],
+            'codesample' => [
+                'buttons' => [
+                    'codesample',
+                ],
+                'menutiems' => [
+                    'codesample' => 'insert',
+                ],
+            ],
+            'directionality' => [
+                'buttons' => [
+                    'ltr',
+                    'rtl',
+                ],
+            ],
+            'emoticons' => [
+                'buttons' => [
+                    'emoticons',
+                ],
+                'menuitems' => [
+                    'emoticons' => 'insert',
+                ],
+            ],
+            'fullscreen' => [
+                'buttons' => [
+                    'fullscreen',
+                ],
+                'menuitems' => [
+                    'fullscreen' => 'view',
+                ],
+            ],
+            'help' => [
+                'buttons' => [
+                    'help',
+                ],
+                'menuitems' => [
+                    'help' => 'help',
+                ],
+            ],
+            'image' => [
+                'buttons' => [
+                    'image',
+                ],
+                'menuitems' => [
+                    'image' => 'insert',
+                ],
+            ],
+            'insertdatetime' => [
+                'buttons' => [
+                    'insertdatetime',
+                ],
+                'menuitems' => [
+                    'insertdatetime' => 'insert',
+                ],
+            ],
+            'link' => [
+                'buttons' => [
+                    'link',
+                    'openlink',
+                    'unlink',
+                ],
+                'menuitems' => [
+                    'link' => 'insert',
+                ],
+            ],
+            'lists' => [
+                'buttons' => [
+                    'bullist',
+                    'numlist',
+                ],
+            ],
+            'media' => [
+                'buttons' => [
+                    'media',
+                ],
+                'menuitems' => [
+                    'media' => 'insert',
+                ],
+            ],
+            'nonbreaking' => [
+                'buttons' => [
+                    'nonbreaking',
+                ],
+                'menuitems' => [
+                    'nonbreaking' => 'insert',
+                ],
+            ],
+            'pagebreak' => [
+                'buttons' => [
+                    'pagebreak',
+                ],
+                'menuitems' => [
+                    'pagebreak' => 'insert',
+                ],
+            ],
+            'preview' => [
+                'buttons' => [
+                    'preview',
+                ],
+                'menuitems' => [
+                    'preview' => 'file',
+                ],
+            ],
+            'quickbars' => [
+                'buttons' => [
+                    'quickimage',
+                    'quicklink',
+                    'quicktable',
+                ],
+            ],
+            'save' => [
+                'buttons' => [
+                    'cancel',
+                    'save',
+                ],
+            ],
+            'searchreplace' => [
+                'buttons' => [
+                    'searchreplace',
+                ],
+                'menuitems' => [
+                    'searchreplace' => 'edit',
+                ],
+            ],
+            'table' => [
+                'buttons' => [
+                    'table',
+                    'tablecellprops',
+                    'tablecopyrow',
+                    'tablecutrow',
+                    'tabledelete',
+                    'tabledeletecol',
+                    'tabledeleterow',
+                    'tableinsertdialog',
+                    'tableinsertcolafter',
+                    'tableinsertcolbefore',
+                    'tableinsertrowafter',
+                    'tableinsertrowbefore',
+                    'tablemergecells',
+                    'tablepasterowafter',
+                    'tablepasterowbefore',
+                    'tableprops',
+                    'tablerowprops',
+                    'tablesplitcells',
+                    'tableclass',
+                    'tablecellclass',
+                    'tablecellvalign',
+                    'tablecellborderwidth',
+                    'tablecellborderstyle',
+                    'tablecaption',
+                    'tablecellbackgroundcolor',
+                    'tablecellbordercolor',
+                    'tablerowheader',
+                    'tablecolheader',
+                ],
+                'menuitems' => [
+                    'inserttable' => 'table',
+                    'tableprops' => 'table',
+                    'deletetable' => 'table',
+                    'cell' => 'table',
+                    'tablemergecells' => 'table',
+                    'tablesplitcells' => 'table',
+                    'tablecellprops' => 'table',
+                    'column' => 'table',
+                    'tableinsertcolumnbefore' => 'table',
+                    'tableinsertcolumnafter' => 'table',
+                    'tablecutcolumn' => 'table',
+                    'tablecopycolumn' => 'table',
+                    'tablepastecolumnbefore' => 'table',
+                    'tablepastecolumnafter' => 'table',
+                    'tabledeletecolumn' => 'table',
+                    'row' => 'table',
+                    'tableinsertrowbefore' => 'table',
+                    'tableinsertrowafter' => 'table',
+                    'tablecutrow' => 'table',
+                    'tablecopyrow' => 'table',
+                    'tablepasterowbefore' => 'table',
+                    'tablepasterowafter' => 'table',
+                    'tablerowprops' => 'table',
+                    'tabledeleterow' => 'table',
+                ],
+            ],
+            'template' => [
+                'buttons' => [
+                    'template',
+                ],
+                'menuitems' => [
+                    'template' => 'insert',
+                ],
+            ],
+            'visualblocks' => [
+                'buttons' => [
+                    'visualblocks',
+                ],
+                'menuitems' => [
+                    'visualblocks' => 'view',
+                ],
+            ],
+            'visualchars' => [
+                'buttons' => [
+                    'visualchars',
+                ],
+                'menuitems' => [
+                    'visualchars' => 'view',
+                ],
+            ],
+            'wordcount' => [
+                'buttons' => [
+                    'wordcount',
+                ],
+                'menuitems' => [
+                    'wordcount' => 'tools',
+                ],
+            ],
+        ];
+    }
+
+    /**
+     * Get a list of the built-in TinyMCE plugins which we want to disable.
+     *
+     * These are usually disabled because we have replaced them, or they are not compatible with Moodle in some way.
+     *
+     * @return string[]
+     */
+    protected function get_disabled_tinymce_plugins(): array {
+        return [
+            // Disable the image and media plugins.
+            // These are not generally compatible with Moodle.
+            'image',
+            'media',
+
+            // Use the Moodle autosave plugin instead.
+            'autosave',
+
+            // Disable the Template plugin for now.
+            'template',
+
+            // Disable the preview plugin as it does not support Moodle filters.
+            'preview',
+
+            // Use the Moodle link plugin instead.
+            'link',
+        ];
+    }
+
+    /**
+     * Get a list of the Moodle plugins with their button, and menuitem, configuration.
+     *
+     * @return array[]
+     */
+    protected function get_moodle_plugins(): array {
+        $plugins = \core_component::get_plugin_list_with_class('tiny', 'plugininfo');
+
+        $pluginconfig = [];
+        foreach ($plugins as $pluginname => $classname) {
+            if (!is_a($classname, plugin::class, true)) {
+                continue;
+            }
+            // Module name => [buttons, menuitems].
+            $pluginconfig["{$pluginname}/plugin"] = $classname::get_plugin_info();
+        }
+
+        return $pluginconfig;
+    }
+
+    /**
+     * Check whether premium plugins are configured and enabled.
+     *
+     * @return bool
+     */
+    protected function premium_plugins_enabled(): bool {
+        return false;
+    }
+
+    /**
+     * Get a list of the Tiny Premium plugins with their button, and menuitem, configuration.
+     *
+     * Note: This only includes _compatible_ premium plugins.
+     * Some premium plugins *may not* be compatible with Moodle, and some may require additional configuration.
+     *
+     * @return array[]
+     */
+    protected function get_premium_plugins(): array {
+        return [
+            'a11ycheck' => [
+                'buttons' => [
+                    'a11ycheck',
+                ],
+                'menuitems' => [
+                    'a11ycheck',
+                ],
+            ],
+            'advcode' => [
+                'buttons' => [
+                    'code',
+                ],
+                'menuitems' => [
+                    'code',
+                ],
+            ],
+            'footnotes' => [
+                'buttons' => [
+                    'footnotes',
+                    'footnotesupdate',
+                ],
+                'menuitems' => [
+                    'footnotes',
+                    'footnotesupdate',
+                ],
+            ],
+            'mergetags' => [
+                'buttons' => [
+                    'mergetags',
+                ],
+                'menuitems' => [
+                    'mergetags',
+                ],
+            ],
+            'autocorrect' => [
+                'menuitems' => [
+                    'autocorrect',
+                    'capitalization',
+                ],
+            ],
+        ];
+    }
+}

lib/editor/tiny/classes/plugin.php

@@ -0,0 +1,85 @@
+<?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/>.
+
+namespace editor_tiny;
+
+use context;
+
+/**
+ * Tiny Editor Plugin class.
+ *
+ * This class must be implemented by any Moodle plugin adding TinyMCE features.
+ *
+ * It should optionally implement the following interfaces:
+ * - plugin_with_buttons: to add buttons to the TinyMCE toolbar
+ * - plugin_with_menuitems
+ * - plugin_with_configuration: to add configuration to the TinyMCE editor
+ *
+ * @package editor_tiny
+ * @copyright  2021 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class plugin {
+    /**
+     * Whether the plugin is enabled
+     *
+     * @param context $context The context that the editor is used within
+     * @param array $options The options passed in when requesting the editor
+     * @param array $fpoptions The filepicker options passed in when requesting the editor
+     * @param editor $editor The editor instance in which the plugin is initialised
+     * @return boolean
+     */
+    public static function is_enabled(
+        context $context,
+        array $options,
+        array $fpoptions,
+        ?editor $editor = null
+    ): bool {
+        return true;
+    }
+
+    /**
+     * Get the plugin information for the plugin.
+     *
+     * @param context $context The context that the editor is used within
+     * @param array $options The options passed in when requesting the editor
+     * @param array $fpoptions The filepicker options passed in when requesting the editor
+     * @param editor $editor The editor instance in which the plugin is initialised
+     * @return array
+     */
+    final public static function get_plugin_info(
+        context $context,
+        array $options,
+        array $fpoptions,
+        ?editor $editor = null
+    ): array {
+        $plugindata = [];
+
+        if (is_a(static::class, plugin_with_buttons::class, true)) {
+            $plugindata['buttons'] = static::get_available_buttons();
+        }
+
+        if (is_a(static::class, plugin_with_menuitems::class, true)) {
+            $plugindata['menuitems'] = static::get_available_menuitems();
+        }
+
+        if (is_a(static::class, plugin_with_configuration::class, true)) {
+            $plugindata['config'] = static::get_plugin_configuration_for_context($context, $options, $fpoptions, $editor);
+        }
+
+        return $plugindata;
+    }
+}

lib/editor/tiny/classes/plugin_with_buttons.php

@@ -0,0 +1,33 @@
+<?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/>.
+
+namespace editor_tiny;
+
+/**
+ * Tiny Editor.
+ *
+ * @package    editor_tiny
+ * @copyright  2021 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+interface plugin_with_buttons {
+    /**
+     * Get a list of the buttons provided by this plugin.
+     *
+     * @return string[]
+     */
+    public static function get_available_buttons(): array;
+}

lib/editor/tiny/classes/plugin_with_configuration.php

@@ -0,0 +1,44 @@
+<?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/>.
+
+namespace editor_tiny;
+
+use context;
+
+/**
+ * An interface representing a plugin with menu items.
+ *
+ * @package    editor_tiny
+ * @copyright  2021 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+interface plugin_with_configuration {
+    /**
+     * Get a list of the menu items provided by this plugin.
+     *
+     * @param context $context The context that the editor is used within
+     * @param array $options The options passed in when requesting the editor
+     * @param array $fpoptions The filepicker options passed in when requesting the editor
+     * @param editor $editor The editor instance in which the plugin is initialised
+     * @return array
+     */
+    public static function get_plugin_configuration_for_context(
+        context $context,
+        array $options,
+        array $fpoptions,
+        ?editor $editor = null
+    ): array;
+}

lib/editor/tiny/classes/plugin_with_menuitems.php

@@ -0,0 +1,33 @@
+<?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/>.
+
+namespace editor_tiny;
+
+/**
+ * An interface representing a plugin with menu items.
+ *
+ * @package    editor_tiny
+ * @copyright  2021 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+interface plugin_with_menuitems {
+    /**
+     * Get a list of the menu items provided by this plugin.
+     *
+     * @return string[]
+     */
+    public static function get_available_menuitems(): array;
+}

lib/editor/tiny/classes/plugininfo/tiny.php

@@ -0,0 +1,151 @@
+<?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/>.
+
+namespace editor_tiny\plugininfo;
+
+use moodle_url;
+
+/**
+ * Subplugin info class.
+ *
+ * @package     editor_tiny
+ * @copyright   2022 Andrew Lyons <andrew@nicols.co.uk>
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class tiny extends \core\plugininfo\base {
+
+    public static function plugintype_supports_disabling(): bool {
+        return true;
+    }
+
+    /**
+     * These subplugins can be uninstalled.
+     *
+     * @return bool
+     */
+    public function is_uninstall_allowed(): bool {
+        return true;
+    }
+
+    /**
+     * Return URL used for management of plugins of this type.
+     *
+     * @return moodle_url
+     */
+    public static function get_manage_url(): moodle_url {
+        return new moodle_url('/admin/settings.php', [
+            'section' => 'editorsettingstiny',
+        ]);
+    }
+
+    /**
+     * Include the settings.php file from subplugins if provided.
+     *
+     * This is a copy of very similar implementations from various other subplugin areas.
+     *
+     * @param \part_of_admin_tree $adminroot
+     * @param string $parentnodename
+     * @param bool $hassiteconfig whether the current user has moodle/site:config capability
+     */
+    public function load_settings(\part_of_admin_tree $adminroot, $parentnodename, $hassiteconfig): void {
+        // In case settings.php wants to refer to them.
+        global $CFG, $USER, $DB, $OUTPUT, $PAGE;
+
+        /** @var \admin_root $ADMIN */
+        $ADMIN = $adminroot; // May be used in settings.php.
+        $plugininfo = $this; // Also can be used inside settings.php.
+
+        if (!$this->is_installed_and_upgraded()) {
+            return;
+        }
+
+        if (!$hassiteconfig || !file_exists($this->full_path('settings.php'))) {
+            return;
+        }
+
+        $section = $this->get_settings_section_name();
+        $settings = new \admin_settingpage(
+            $section,
+            $this->displayname,
+            'moodle/site:config',
+            $this->is_enabled() === false
+        );
+
+        // This may also set $settings to null.
+        include($this->full_path('settings.php'));
+
+        if ($settings) {
+            $ADMIN->add($parentnodename, $settings);
+        }
+    }
+
+    /**
+     * Get the settings section name.
+     * This is used to get the setting links in the Tiny sub-plugins table.
+     *
+     * @return null|string the settings section name.
+     */
+    public function get_settings_section_name(): ?string {
+        if (!file_exists($this->full_path('settings.php'))) {
+            return null;
+        }
+
+        return "tiny_{$this->name}_settings";
+    }
+
+    public static function get_enabled_plugins(): array {
+        $pluginmanager = \core_plugin_manager::instance();
+        $plugins = $pluginmanager->get_installed_plugins('tiny');
+
+        if (!$plugins) {
+            return [];
+        }
+
+        // Filter to return only enabled plugins.
+        $enabled = [];
+        foreach (array_keys($plugins) as $pluginname) {
+            $disabled = get_config("tiny_{$pluginname}", 'disabled');
+            if (empty($disabled)) {
+                $enabled[$pluginname] = $pluginname;
+            }
+        }
+        return $enabled;
+    }
+
+    public static function enable_plugin(string $plugin, int $enabled): bool {
+        $pluginname = "tiny_{$plugin}";
+
+        $oldvalue = !empty(get_config($pluginname, 'disabled'));
+        $disabled = empty($enabled);
+        $haschanged = false;
+
+        // Only set value if there is no config setting or if the value is different from the previous one.
+        if (!$oldvalue && $disabled) {
+            set_config('disabled', $disabled, $pluginname);
+            $haschanged = true;
+        } else if ($oldvalue && !$disabled) {
+            unset_config('disabled', $pluginname);
+            $haschanged = true;
+        }
+
+        if ($haschanged) {
+            add_to_config_log('disabled', $oldvalue, $disabled, $pluginname);
+            \core_plugin_manager::reset_caches();
+        }
+
+        return $haschanged;
+    }
+}

lib/editor/tiny/classes/privacy/provider.php

@@ -0,0 +1,36 @@
+<?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/>.
+
+namespace editor_tiny\privacy;
+
+/**
+ * Privacy Subsystem implementation for the TinyMCE Editor.
+ *
+ * @package    editor_tiny
+ * @copyright  2022 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Return the langstring identifier for the reason that no privacy provider needs to be implemented for this plugin.
+     *
+     * @return string
+     */
+    public static function get_reason(): string {
+        return 'privacy:reason';
+    }
+}

lib/editor/tiny/classes/table/plugin_management_table.php

@@ -0,0 +1,42 @@
+<?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/>.
+
+namespace editor_tiny\table;
+
+use moodle_url;
+
+/**
+ * Tiny admin settings.
+ *
+ * @package editor_tiny
+ * @copyright 2023 Andrew Lyons <andrew@nicols.co.uk>
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class plugin_management_table extends \core_admin\table\plugin_management_table {
+    protected function get_plugintype(): string {
+        return 'tiny';
+    }
+
+    public function guess_base_url(): void {
+        $this->define_baseurl(
+            new moodle_url('/admin/settings.php', ['section' => 'editorsettingstiny'])
+        );
+    }
+
+    protected function get_action_url(array $params = []): moodle_url {
+        return new moodle_url('/lib/editor/tiny/subplugins.php', $params);
+    }
+}