From 7b83ea8398593c1d62552df8bdfb919f3c53ce95 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Frank=20J=2E=20G=C3=B3mez?= <frank@ginkgostreet.com>
Date: Thu, 20 Apr 2017 18:27:47 -0400
Subject: [PATCH] CRM-20458: Added civi.dao.preDelete event and event class.

---
 CRM/Core/DAO.php                  |  3 ++
 Civi/Core/DAO/Event/PreDelete.php | 47 +++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 Civi/Core/DAO/Event/PreDelete.php

diff --git a/CRM/Core/DAO.php b/CRM/Core/DAO.php
index 4d153fb782..e2636dee5d 100644
--- a/CRM/Core/DAO.php
+++ b/CRM/Core/DAO.php
@@ -526,6 +526,9 @@ class CRM_Core_DAO extends DB_DataObject {
    *     * @return mixed Int (No. of rows affected) on success, false on failure, 0 on no data affected
    */
   public function delete($useWhere = FALSE) {
+    $preEvent = new \Civi\Core\DAO\Event\PreDelete($this);
+    \Civi::service('dispatcher')->dispatch("civi.dao.preDelete", $preEvent);
+
     $result = parent::delete($useWhere);
 
     $event = new \Civi\Core\DAO\Event\PostDelete($this, $result);
diff --git a/Civi/Core/DAO/Event/PreDelete.php b/Civi/Core/DAO/Event/PreDelete.php
new file mode 100644
index 0000000000..7485c508c6
--- /dev/null
+++ b/Civi/Core/DAO/Event/PreDelete.php
@@ -0,0 +1,47 @@
+<?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\Core\DAO\Event;
+
+/**
+ * Class PreDelete
+ * @package Civi\Core\DAO\Event
+ */
+class PreDelete extends \Symfony\Component\EventDispatcher\Event {
+
+  /**
+   * @var DAO Object
+   */
+  public $object;
+
+  /**
+   * @param $object
+   */
+  public function __construct($object) {
+    $this->object = $object;
+  }
+}
-- 
2.25.1