PHP7 Decorator

Structural/Decorator/RendererDecorator.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace DesignPatterns\Structural\Decorator;
+
+/**
+ * the Decorator MUST implement the RendererInterface contract, this is the key-feature
+ * of this design pattern. If not, this is no longer a Decorator but just a dumb
+ * wrapper.
+ */
+abstract class RendererDecorator
+{
+    /**
+     * @var RenderableInterface
+     */
+    protected $wrapped;
+
+    /**
+     * @param RenderableInterface $renderer
+     */
+    public function __construct(RenderableInterface $renderer)
+    {
+        $this->wrapped = $renderer;
+    }
+}