From a683da3ca1d077542aaf8b5d438361d44ee59855 Mon Sep 17 00:00:00 2001
From: Sam Hemelryk <sam@moodle.com>
Date: Tue, 27 Apr 2010 09:26:42 +0000
Subject: [PATCH] navigation MDL-22209 Added a callback for local plugins to
 allow them to add to the navigation.

---
 lib/navigationlib.php | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/lib/navigationlib.php b/lib/navigationlib.php
index e4a178742be..a5a7acce223 100644
--- a/lib/navigationlib.php
+++ b/lib/navigationlib.php
@@ -808,7 +808,7 @@ class global_navigation extends navigation_node {
      * @return bool
      */
     public function initialise() {
-        global $SITE, $USER;
+        global $CFG, $SITE, $USER;
         // Check if it has alread been initialised
         if ($this->initialised || during_initial_install()) {
             return true;
@@ -912,6 +912,18 @@ class global_navigation extends navigation_node {
             }
         }
 
+        // Give the local plugins a chance to include some navigation if they want.
+        foreach (get_list_of_plugins('local') as $plugin) {
+            if (!file_exists($CFG->dirroot.'/local/'.$plugin.'/lib.php')) {
+                continue;
+            }
+            require_once($CFG->dirroot.'/local/'.$plugin.'/lib.php');
+            $function = $plugin.'_extends_navigation';
+            if (function_exists($function)) {
+                $function($this);
+            }
+        }
+
         // Remove any empty root nodes
         foreach ($this->rootnodes as $node) {
             if (!$node->has_children()) {