first commit

system/src/Grav/Common/GravTrait.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * @package    Grav.Common
+ *
+ * @copyright  Copyright (C) 2015 - 2018 Trilby Media, LLC. All rights reserved.
+ * @license    MIT License; see LICENSE file for details.
+ */
+
+namespace Grav\Common;
+
+/**
+ * @deprecated 1.4 Use Grav::instance() instead
+ */
+trait GravTrait
+{
+    protected static $grav;
+
+    /**
+     * @return Grav
+     */
+    public static function getGrav()
+    {
+        if (!self::$grav) {
+            self::$grav = Grav::instance();
+        }
+
+        user_error(__TRAIT__ . ' is deprecated since Grav 1.4, use Grav::instance() instead', E_USER_DEPRECATED);
+
+        return self::$grav;
+    }
+}