From b68ee4df98c41c358c0a15050219f2af7840cfa7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gina=20H=C3=A4u=C3=9Fge?= <osd@foosel.net>
Date: Fri, 18 Nov 2016 07:55:16 +0100
Subject: [PATCH] If l10n is set on page load, set OctoPrint.options.locale to
 its value

That way API requests will be made with the locale the page was requested
in.

See #1593
---
 src/octoprint/static/js/app/helpers.js | 13 +++++++++++++
 src/octoprint/static/js/app/main.js    |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/src/octoprint/static/js/app/helpers.js b/src/octoprint/static/js/app/helpers.js
index 81c3b9c9..ef4a4d6f 100644
--- a/src/octoprint/static/js/app/helpers.js
+++ b/src/octoprint/static/js/app/helpers.js
@@ -865,3 +865,16 @@ var sizeObservable = function(observable) {
         }
     })
 };
+
+var getQueryParameterByName = function(name, url) {
+    // from http://stackoverflow.com/a/901144/2028598
+    if (!url) {
+      url = window.location.href;
+    }
+    name = name.replace(/[\[\]]/g, "\\$&");
+    var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
+        results = regex.exec(url);
+    if (!results) return null;
+    if (!results[2]) return '';
+    return decodeURIComponent(results[2].replace(/\+/g, " "));
+};
diff --git a/src/octoprint/static/js/app/main.js b/src/octoprint/static/js/app/main.js
index a870ecc7..127643b5 100644
--- a/src/octoprint/static/js/app/main.js
+++ b/src/octoprint/static/js/app/main.js
@@ -13,6 +13,11 @@ $(function() {
         OctoPrint.options.baseurl = BASEURL;
         OctoPrint.options.apikey = UI_API_KEY;
 
+        var l10n = getQueryParameterByName("l10n");
+        if (l10n) {
+            OctoPrint.options.locale = l10n;
+        }
+
         OctoPrint.socket.onMessage("connected", function(data) {
             var payload = data.data;
             OctoPrint.options.apikey = payload.apikey;