From 3c3cb4047d4018740421590f42b9bc25e432a005 Mon Sep 17 00:00:00 2001
From: Nils Schneider <nils@nilsschneider.net>
Date: Tue, 31 Mar 2015 16:30:16 +0200
Subject: [PATCH] router: be a little more robust

---
 lib/router.js | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/lib/router.js b/lib/router.js
index 2bc38f5..df3bc6f 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -30,15 +30,25 @@ define(function () {
     }
 
     function gotoNode(d) {
+      if (!d)
+        return false
+
       targets.forEach( function (t) {
         t.gotoNode(d)
       })
+
+      return true
     }
 
     function gotoLink(d) {
+      if (!d)
+        return false
+
       targets.forEach( function (t) {
         t.gotoLink(d)
       })
+
+      return true
     }
 
     function loadState(s) {
@@ -80,16 +90,18 @@ define(function () {
 
     self.node = function (d) {
       return function () {
-        gotoNode(d)
-        saveState({ node: d })
+        if (gotoNode(d))
+          saveState({ node: d })
+
         return false
       }
     }
 
     self.link = function (d) {
       return function () {
-        gotoLink(d)
-        saveState({ link: d })
+        if (gotoLink(d))
+          saveState({ link: d })
+
         return false
       }
     }