From 5aaeda46c5d6b53e4094509886976f7e046fc3ff Mon Sep 17 00:00:00 2001
From: rlx <0x0073@0x2620.org>
Date: Wed, 3 Sep 2014 13:23:19 +0200
Subject: [PATCH] AnnotationPanel: handle case where removing languages leaves
 one previously disabled language (fixes #2454)

---
 source/Ox.UI/js/Video/AnnotationPanel.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/source/Ox.UI/js/Video/AnnotationPanel.js b/source/Ox.UI/js/Video/AnnotationPanel.js
index c8136f28..f27b2c42 100644
--- a/source/Ox.UI/js/Video/AnnotationPanel.js
+++ b/source/Ox.UI/js/Video/AnnotationPanel.js
@@ -562,11 +562,24 @@ Ox.AnnotationPanel = function(options, self) {
             enabledLanguages = self.enabledLanguages;
         self.languages = getLanguages();
         self.enabledLanguages = self.languages.filter(function(language) {
+            // enabled if it was enabled, was just added, or is the only
+            // language
             return Ox.contains(enabledLanguages, language)
-                || !Ox.contains(languages, language);
+                || !Ox.contains(languages, language)
+                || self.languages.length == 1;
         }).map(function(language) {
             return language.code;
         });
+        if (
+            self.languages.length == 1
+            && !Ox.contains(enabledLanguages, self.languages[0].code)
+        ) {
+            // last remaining language was enabled by removing all other
+            // languages
+            self.$folder.forEach(function($folder) {
+                $folder.options({languages: self.enabledLanguages});
+            });
+        }
     }
 
     /*@