First draft for plugins system

app/Helper/Hook.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Helper;
+
+/**
+ * Template Hook helpers
+ *
+ * @package helper
+ * @author  Frederic Guillot
+ */
+class Hook extends \Core\Base
+{
+    private $hooks = array();
+
+    /**
+     * Render all attached hooks
+     *
+     * @access public
+     * @param  string  $hook
+     * @param  array   $variables
+     * @return string
+     */
+    public function render($hook, array $variables = array())
+    {
+        $buffer = '';
+
+        foreach ($this->hooks as $name => $template) {
+            if ($hook === $name) {
+                $buffer .= $this->template->render($template, $variables);
+            }
+        }
+
+        return $buffer;
+    }
+
+    /**
+     * Attach a template to a hook
+     *
+     * @access public
+     * @param  string  $hook
+     * @param  string  $template
+     * @return \Helper\Hook
+     */
+    public function attach($hook, $template)
+    {
+        $this->hooks[$hook] = $template;
+        return $this;
+    }
+}