MDL-75078 editor_tiny: Disable quickbars entirely

Part of MDL-75966

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

@@ -214,6 +214,10 @@ const getStandardConfig = (target, tinyMCE, options, plugins) => {
         // eslint-disable-next-line camelcase
         a11y_advanced_options: true,
 
+        // Disable quickbars entirely.
+        // The UI is not ideal and we'll wait for it to improve in future before we enable it in Moodle.
+        quickbars_insert_toolbar: '',
+
         // The list of plugins to include in the instance.
         // https://www.tiny.cloud/docs/tinymce/6/editor-important-options/#plugins
         plugins: [

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

@@ -119,3 +119,17 @@ export const addContextmenuItem = (contextmenu, ...menuitems) => {
         .filter((item) => item !== '')
         .join(' ');
 };
+
+/**
+ * Given a TinyMCE quickbars configuration, add items to the meun.
+ *
+ * @param {string} toolbar
+ * @param {string[]} menuitems
+ * @returns {string}
+ */
+// eslint-disable-next-line no-unused-vars
+export const addQuickbarsToolbarItem = (toolbar, ...menuitems) => {
+    // For the moment we have disabled use of this menu.
+    // The configuration is left in place to allow plugins to declare that they would like to support it in the future.
+    return toolbar;
+};