From 41bc10b9cb6c50da684d91da156bd4520e48b066 Mon Sep 17 00:00:00 2001
From: Pale Moon <git-repo@palemoon.org>
Date: Sat, 22 Oct 2016 16:45:29 +0200
Subject: Add UI front-end for MSE preferences.

---
 browser/components/preferences/content.js             | 14 ++++++++++++++
 browser/components/preferences/content.xul            | 19 +++++++++++++++++++
 .../en-US/chrome/browser/preferences/content.dtd      | 10 ++++++++++
 3 files changed, 43 insertions(+)

diff --git a/browser/components/preferences/content.js b/browser/components/preferences/content.js
index 3a5e21622..1016d11e9 100644
--- a/browser/components/preferences/content.js
+++ b/browser/components/preferences/content.js
@@ -32,6 +32,20 @@ var gContentPane = {
     return undefined;
   },
 
+  /**
+   * Utility function to enable/disable the checkboxes for MSE formats depending
+   * on the value of media.mediasource.enabled.
+   */
+  updateMSE: function ()
+  {
+    var checkboxMSEMP4 = document.getElementById('videoMSEMP4');
+    var checkboxMSEWebM = document.getElementById('videoMSEWebM');
+    var preference = document.getElementById('media.mediasource.enabled');
+    checkboxMSEMP4.disabled = preference.value != true;
+    checkboxMSEWebM.disabled = preference.value != true;
+    return undefined;
+  },
+
   // BEGIN UI CODE
 
   /*
diff --git a/browser/components/preferences/content.xul b/browser/components/preferences/content.xul
index 94201edbf..09cf3351b 100644
--- a/browser/components/preferences/content.xul
+++ b/browser/components/preferences/content.xul
@@ -31,6 +31,12 @@
                   name="font.language.group"
                   type="wstring"
                   onchange="gContentPane._rebuildFonts();"/>
+                  
+      <!-- VIDEO -->
+      <preference id="media.mediasource.enabled"      name="media.mediasource.enabled"      type="bool"/>
+      <preference id="media.mediasource.mp4.enabled"  name="media.mediasource.mp4.enabled"  type="bool"/>
+      <preference id="media.mediasource.webm.enabled" name="media.mediasource.webm.enabled" type="bool"/>
+      
     </preferences>
     
     <script type="application/javascript" src="chrome://mozapps/content/preferences/fontbuilder.js"/>
@@ -147,6 +153,19 @@
       </hbox>
     </groupbox>
 
+    <!-- Video -->
+    <groupbox id="videoGroup">
+      <caption label="&video.label;"/>
+
+      <checkbox id="videoMSE" preference="media.mediasource.enabled"
+                label="&videoMSE.label;" accesskey="&videoMSE.accesskey;"
+                onsyncfrompreference="return gContentPane.updateMSE();"/>
+      <checkbox id="videoMSEMP4" preference="media.mediasource.mp4.enabled"
+                label="&videoMSEMP4.label;" accesskey="&videoMSEMP4.accesskey;"/>
+      <checkbox id="videoMSEWebM" preference="media.mediasource.webm.enabled"
+                label="&videoMSEWebM.label;" accesskey="&videoMSEWebM.accesskey;"/>
+    </groupbox>
+
   </prefpane>
 
 </overlay>
diff --git a/browser/locales/en-US/chrome/browser/preferences/content.dtd b/browser/locales/en-US/chrome/browser/preferences/content.dtd
index 3261c0087..91abab069 100644
--- a/browser/locales/en-US/chrome/browser/preferences/content.dtd
+++ b/browser/locales/en-US/chrome/browser/preferences/content.dtd
@@ -29,3 +29,13 @@
 <!ENTITY  chooseLanguage.label        "Choose your preferred language for displaying pages">
 <!ENTITY  chooseButton.label          "Choose…">
 <!ENTITY  chooseButton.accesskey      "o">
+
+<!ENTITY  video.label                 "Video">
+<!ENTITY  videoMSE.label              "Enable Media Source Extensions (MSE)">
+<!ENTITY  videoMSE.accesskey          "M">
+<!ENTITY  videoMSEMP4.label           "Enable MSE for MP4 video">
+<!ENTITY  videoMSEMP4.accesskey       "4">
+<!ENTITY  videoMSEWebM.label          "Enable MSE for WebM video">
+<!ENTITY  videoMSEWebM.accesskey      "W">
+
+
-- 
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