initial wip based on how elementor does it

includes/base/class-base-transformer.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Inspired by the PHP ActivityPub Library by @Landrok
+ *
+ * @link https://github.com/landrok/activitypub
+ */
+
+namespace Activitypub\Activity;
+
+use WP_Error;
+use ReflectionClass;
+
+use function Activitypub\camel_to_snake_case;
+use function Activitypub\snake_to_camel_case;
+
+/**
+ * Base_Object is an implementation of one of the
+ * Activity Streams Core Types.
+ *
+ * The Object is the primary base type for the Activity Streams
+ * vocabulary.
+ *
+ * Note: Object is a reserved keyword in PHP. It has been suffixed with
+ * 'Base_' for this reason.
+ *
+ * @see https://www.w3.org/TR/activitystreams-core/#object
+ */
+class Base_Object {

includes/managers/class-transformers-manager.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * Inspired by the way elementor handles addons.
+ *
+ * @link https://github.com/elementor/elementor/
+ */
+
+namespace ActivityPub;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * ActivityPub transformers manager.
+ *
+ * ActivityPub transformers manager handler class is responsible for registering and
+ * initializing all the supported WP-Pobject to ActivityPub transformers.
+ *
+ * @since version_number_transformer_management_placeholder
+ */
+
+class Transformers_Manager {
+	/**
+	 * Transformers.
+	 *
+	 * Holds the list of all the transformers. Default is `null`.
+	 *
+	 * @since 1.0.0
+	 * @access private
+	 *
+	 * @var Base_Control[]
+	 */
+	private $controls = null;
+
+    /**
+	 * Transformers manager constructor.
+	 *
+	 * Initializing ActivityPub transformers manager.
+	 *
+	 * @since version_number_transformer_management_placeholder
+	 * @access public
+	*/
+	public function __construct() {
+		$this->require_files();
+
+		add_action( 'elementor/ajax/register_actions', [ $this, 'register_ajax_actions' ] );
+	}
+
+	/**
+	 * Register a transformer.
+	 *
+	 * @since version_number_transformer_management_placeholder
+	 * @access public
+	 *
+	 * @param \ActivityPub\Base_Transformer $transformer_instance ActivityPub Transformer.
+	 *
+	 * @return bool True if the transformer was registered.
+	 */
+	public function register( Base_Transformer $control_instance, $control_id = null ) {
+
+		// TODO: For BC. Remove in the future.
+		if ( $control_id ) {
+			Plugin::instance()->modules_manager->get_modules( 'dev-tools' )->deprecation->deprecated_argument(
+				'$control_id', '3.5.0'
+			);
+		} else {
+			$control_id = $control_instance->get_type();
+		}
+
+		$this->controls[ $control_id ] = $control_instance;
+	}
+
+}