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sites/all/modules/civicrm/Civi/API/Subscriber/WrapperAdapter.php

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+<?php
+/*
+ +--------------------------------------------------------------------+
+ | CiviCRM version 4.7                                                |
+ +--------------------------------------------------------------------+
+ | Copyright CiviCRM LLC (c) 2004-2017                                |
+ +--------------------------------------------------------------------+
+ | This file is a part of CiviCRM.                                    |
+ |                                                                    |
+ | CiviCRM is free software; you can copy, modify, and distribute it  |
+ | under the terms of the GNU Affero General Public License           |
+ | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
+ |                                                                    |
+ | CiviCRM 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 Affero General Public License for more details.        |
+ |                                                                    |
+ | You should have received a copy of the GNU Affero General Public   |
+ | License and the CiviCRM Licensing Exception along                  |
+ | with this program; if not, contact CiviCRM LLC                     |
+ | at info[AT]civicrm[DOT]org. If you have questions about the        |
+ | GNU Affero General Public License or the licensing of CiviCRM,     |
+ | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
+ +--------------------------------------------------------------------+
+ */
+
+namespace Civi\API\Subscriber;
+
+use Civi\API\Events;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * This is a wrapper for the legacy "API Wrapper" interface which allows
+ * wrappers to run through the new kernel. It translates from dispatcher events
+ * ('civi.api.prepare', 'civi.api.respond') to wrapper calls ('fromApiInput', 'toApiOutput').
+ */
+class WrapperAdapter implements EventSubscriberInterface {
+
+  /**
+   * @return array
+   */
+  public static function getSubscribedEvents() {
+    return array(
+      Events::PREPARE => array('onApiPrepare', Events::W_MIDDLE),
+      Events::RESPOND => array('onApiRespond', Events::W_EARLY * 2),
+    );
+  }
+
+  /**
+   * @var array(\API_Wrapper)
+   */
+  protected $defaults;
+
+  /**
+   * @param array $defaults
+   *   array(\API_Wrapper).
+   */
+  public function __construct($defaults = array()) {
+    $this->defaults = $defaults;
+  }
+
+  /**
+   * @param \Civi\API\Event\PrepareEvent $event
+   *   API preparation event.
+   */
+  public function onApiPrepare(\Civi\API\Event\PrepareEvent $event) {
+    $apiRequest = $event->getApiRequest();
+
+    // For input filtering, process $apiWrappers in forward order
+    foreach ($this->getWrappers($apiRequest) as $apiWrapper) {
+      $apiRequest = $apiWrapper->fromApiInput($apiRequest);
+    }
+
+    $event->setApiRequest($apiRequest);
+  }
+
+  /**
+   * @param \Civi\API\Event\RespondEvent $event
+   *   API response event.
+   */
+  public function onApiRespond(\Civi\API\Event\RespondEvent $event) {
+    $apiRequest = $event->getApiRequest();
+    $result = $event->getResponse();
+
+    // For output filtering, process $apiWrappers in reverse order
+    foreach (array_reverse($this->getWrappers($apiRequest)) as $apiWrapper) {
+      $result = $apiWrapper->toApiOutput($apiRequest, $result);
+    }
+
+    $event->setResponse($result);
+  }
+
+  /**
+   * @param array $apiRequest
+   *   The full API request.
+   * @return array<\API_Wrapper>
+   */
+  public function getWrappers($apiRequest) {
+    if (!isset($apiRequest['wrappers'])) {
+      $apiRequest['wrappers'] = $this->defaults;
+      \CRM_Utils_Hook::apiWrappers($apiRequest['wrappers'], $apiRequest);
+    }
+    return $apiRequest['wrappers'];
+  }
+
+}