From 340cb39083e7380f80abde95e46e192fd7b40bb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lorenz=20H=C3=BCbschle-Schneider?=
 <lorenz-dev@lgh-alumni.de>
Date: Sat, 6 Jun 2015 17:18:46 +0200
Subject: [PATCH] Detect Safari incognito localstorage fail

Fixes #591
---
 js/localstorage.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/js/localstorage.js b/js/localstorage.js
index 0c1218e..041e359 100644
--- a/js/localstorage.js
+++ b/js/localstorage.js
@@ -10,6 +10,15 @@ ls.factory("$store", ["$parse", function($parse){
     var storage = (typeof window.localStorage === 'undefined') ? undefined : window.localStorage,
         supported = !(typeof storage == 'undefined' || typeof window.JSON == 'undefined');
 
+    // Safari reports a localStorage object in incognito mode, but trying
+    // to use it raises an exception. Catch that case.
+    try {
+        storage.setItem('dummy', 'dummy');
+        storage.removeItem('dummy');
+    } catch (error) {
+        supported = false;
+    }
+
     if (!supported) {
         console.log('Warning: localStorage is not supported');
     }