From e4c64e1a3dd007880ccd12a4273baae9b4380519 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Sat, 17 Mar 2018 10:12:55 +0100
Subject: Set up the "DRM not available" messages in a saner way.

---
 browser/base/content/browser-media.js | 58 +++++++++++++++++------------------
 1 file changed, 28 insertions(+), 30 deletions(-)

diff --git a/browser/base/content/browser-media.js b/browser/base/content/browser-media.js
index f721be74d..bd5c5b227 100644
--- a/browser/base/content/browser-media.js
+++ b/browser/base/content/browser-media.js
@@ -45,11 +45,23 @@ var gEMEHandler = {
     }
     return true;
   },
-  getLearnMoreLink: function(msgId) {
-    let text = gNavigatorBundle.getString("emeNotifications." + msgId + ".learnMoreLabel");
+  getEMEDisabledFragment: function(msgId) {
+    let mainMessage = gNavigatorBundle.getString("emeNotifications.drmContentDisabled.message");
+    let [prefix, suffix] = mainMessage.split(/%(?:\$\d)?S/).map(s => document.createTextNode(s));
+    let text = gNavigatorBundle.getString("emeNotifications.drmContentDisabled.learnMoreLabel");
     let baseURL = Services.urlFormatter.formatURLPref("app.support.baseURL");
-    return "<label class='text-link' href='" + baseURL + "drm-content'>" +
-           text + "</label>";
+    let link = document.createElement("label");
+    link.className = "text-link";
+    link.setAttribute("href", baseURL + "drm-content");
+    link.textContent = text;
+
+    let fragment = document.createDocumentFragment();
+    [prefix, link, suffix].forEach(n => fragment.appendChild(n));
+    return fragment;
+  },
+  getMessageWithBrandName: function(notificationId) {
+    let msgId = "emeNotifications." + notificationId + ".message";
+    return gNavigatorBundle.getFormattedString(msgId, [this._brandShortName]);
   },
   receiveMessage: function({target: browser, data: data}) {
     let parsedData;
@@ -67,7 +79,8 @@ var gEMEHandler = {
 
     let notificationId;
     let buttonCallback;
-    let params = [];
+    // Notification message can be either a string or a DOM fragment.
+    let notificationMessage;
     switch (status) {
       case "available":
       case "cdm-created":
@@ -82,17 +95,17 @@ var gEMEHandler = {
       case "cdm-disabled":
         notificationId = "drmContentDisabled";
         buttonCallback = gEMEHandler.ensureEMEEnabled.bind(gEMEHandler, browser, keySystem)
-        params = [this.getLearnMoreLink(notificationId)];
+        notificationMessage = this.getEMEDisabledFragment();
         break;
 
       case "cdm-insufficient-version":
         notificationId = "drmContentCDMInsufficientVersion";
-        params = [this._brandShortName];
+        notificationMessage = this.getMessageWithBrandName(notificationId);
         break;
 
       case "cdm-not-installed":
         notificationId = "drmContentCDMInstalling";
-        params = [this._brandShortName];
+        notificationMessage = this.getMessageWithBrandName(notificationId);
         break;
 
       case "cdm-not-supported":
@@ -104,44 +117,29 @@ var gEMEHandler = {
         return;
     }
 
-    this.showNotificationBar(browser, notificationId, keySystem, params, buttonCallback);
-  },
-  showNotificationBar: function(browser, notificationId, keySystem, labelParams, callback) {
+    // Now actually create the notification
+
     let box = gBrowser.getNotificationBox(browser);
     if (box.getNotificationWithValue(notificationId)) {
       return;
     }
 
-    let msgPrefix = "emeNotifications." + notificationId + ".";
-    let msgId = msgPrefix + "message";
-
-    let message = labelParams.length ?
-                  gNavigatorBundle.getFormattedString(msgId, labelParams) :
-                  gNavigatorBundle.getString(msgId);
-
     let buttons = [];
-    if (callback) {
+    if (buttonCallback) {
+      let msgPrefix = "emeNotifications." + notificationId + ".";
       let btnLabelId = msgPrefix + "button.label";
       let btnAccessKeyId = msgPrefix + "button.accesskey";
       buttons.push({
         label: gNavigatorBundle.getString(btnLabelId),
         accessKey: gNavigatorBundle.getString(btnAccessKeyId),
-        callback: callback
+        callback: buttonCallback
       });
     }
 
     let iconURL = "chrome://browser/skin/drm-icon.svg#chains-black";
 
-    // Do a little dance to get rich content into the notification:
-    let fragment = document.createDocumentFragment();
-    let descriptionContainer = document.createElement("description");
-    descriptionContainer.innerHTML = message;
-    while (descriptionContainer.childNodes.length) {
-      fragment.appendChild(descriptionContainer.childNodes[0]);
-    }
-
-    box.appendNotification(fragment, notificationId, iconURL, box.PRIORITY_WARNING_MEDIUM,
-                           buttons);
+    box.appendNotification(notificationMessage, notificationId, iconURL, 
+                           box.PRIORITY_WARNING_MEDIUM, buttons);
   },
   showPopupNotificationForSuccess: function(browser, keySystem) {
     // We're playing EME content! Remove any "we can't play because..." messages.
-- 
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