From 75869a561f2f378956d80e12c51f3611cddd4284 Mon Sep 17 00:00:00 2001
From: Robert Lord <robert@lord.io>
Date: Mon, 21 Apr 2014 11:31:32 -0400
Subject: [PATCH] Prevent reload page on language change, fixes #36

- Uses onpopstate to handle users pressing back buttons
- Switches the query string and changes the language
  without reloading.
- Thanks to @bootstraponline for some of the code in this commit.
---
 source/javascripts/app/lang.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/source/javascripts/app/lang.js b/source/javascripts/app/lang.js
index 1d0685f..9c7fe91 100644
--- a/source/javascripts/app/lang.js
+++ b/source/javascripts/app/lang.js
@@ -55,4 +55,21 @@ under the License.
     });
 
   }
+
+  // if we click on a language tab, activate that language
+  $(function() {
+    $("#lang-selector a").on("click", function() {
+      var lang = $(this).data("language-name");
+      var hash = window.location.hash;
+      if (hash) hash = hash.replace(/^#+/, '');
+      // do not reload the page every time the language is changed
+      if (history) history.pushState({}, '', '?' + lang + '#' + hash);
+
+      activateLanguage(lang);
+      return false;
+    });
+    window.onpopstate = function(event) {
+      activateLanguage(window.location.search.substr(1));
+    };
+  });
 })(window);