add tinymace plugin, T-17631

assets/js/plugin-tinymce-add-class.js

@@ -0,0 +1,18 @@
+/* eslint-disable no-undef, no-unused-vars */
+(function addClassesToWysiwygElements() {
+  tinymce.create('tinymce.plugins.addClass', {
+    init(editor, url) {
+      editor.on('NodeChange', () => {
+        const elements = editor.dom.select('ul, ol, blockquote');
+
+        elements.forEach((element) => {
+          if (!editor.dom.hasClass(element, 'wysiwyg')) {
+            editor.dom.addClass(element, 'wysiwyg');
+          }
+        });
+      });
+    },
+  });
+
+  tinymce.PluginManager.add('addClass', tinymce.plugins.addClass);
+}());

inc/tinymce.php

@@ -46,3 +46,17 @@ function air_helper_tinymce_remove_formats( $init ) {
   $init['block_formats'] = 'Paragraph=p;Heading 2=h2;Heading 3=h3;Heading 4=h4;';
   return $init;
 } // end air_helper_tinymce_remove_formats
+
+/**
+ *  Add helper class to specific elements in TinyMCE
+ */
+function add_tinymce_plugin( $plugin_array ) {
+  $plugin_array['addClass'] = air_helper_base_url() . '/assets/js/plugin-tinymce-add-class.js';
+  return $plugin_array;
+}
+
+function tinymce_plugin() {
+  add_filter( 'mce_external_plugins', 'add_tinymce_plugin' );
+}
+
+add_action( 'admin_head', 'tinymce_plugin' );