Make favicon paths configurable

The favicons were hardcoded in launch.html, so
rebranding the page required editing the template.

The paths now come from the favicons block in
assets/config.json. Missing keys keep the defaults
from launch.html.

README.md

@@ -18,6 +18,7 @@ Rename `assets/config.json.sample` to `assets/config.json`.
 | `launchTimeout` | Timeout in ms before the browser fallback is shown after trying to start the jitsi-meet-electron client. |
 | `backgroundImage` | Path to the page background image. Empty: no background. |
 | `logo` | Path to the logo shown in the logo bar. Empty: logo bar stays hidden. |
+| `favicons` | Paths to the page icons: `ico` (fallback icon), `svg` (icon), `appleTouch` (Apple touch icon). The values from `launch.html` are kept if a key is missing. |
 | `downloads` | Download URLs for the jitsi-meet clients, shown in the fallback view per detected OS: `windows`, `macos`, `linux`, `ios`, `android`. |
 
 ## Third-party assets

assets/config.json.sample

@@ -6,6 +6,11 @@
   "launchTimeout": 2000,
   "backgroundImage": "path/to/backgroundimage",
   "logo": "path/to/logo",
+  "favicons": {
+    "ico": "path/to/favicon.ico",
+    "svg": "path/to/favicon.svg",
+    "appleTouch": "path/to/apple-touch-icon.png"
+  },
   "downloads": {
     "windows": "https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.exe",
     "macos": "https://github.com/jitsi/jitsi-meet-electron/releases/latest/download/jitsi-meet.dmg",

assets/launch.js

@@ -309,6 +309,33 @@ function applyLogo() {
   logoBar.classList.remove("hidden");
 }
 
+/* ============================================================
+ * FAVICONS
+ * ============================================================
+ */
+
+/*
+ * Overwrite the default icons from launch.html
+ * (CONFIG.favicons in assets/config.json).
+ */
+function applyFavicons() {
+  if (!CONFIG.favicons) {
+    return;
+  }
+
+  if (CONFIG.favicons.ico) {
+    faviconIco.href = CONFIG.favicons.ico;
+  }
+
+  if (CONFIG.favicons.svg) {
+    faviconSvg.href = CONFIG.favicons.svg;
+  }
+
+  if (CONFIG.favicons.appleTouch) {
+    appleTouchIcon.href = CONFIG.favicons.appleTouch;
+  }
+}
+
 /* ============================================================
  * NEXTCLOUD BUTTON
  * ============================================================
@@ -412,6 +439,11 @@ const invalidRoomName = document.getElementById("invalidRoomName");
 const logoBar = document.getElementById("logoBar");
 const logoImage = document.getElementById("logoImage");
 
+/* Favicon DOM elements */
+const faviconIco = document.getElementById("faviconIco");
+const faviconSvg = document.getElementById("faviconSvg");
+const appleTouchIcon = document.getElementById("appleTouchIcon");
+
 /* Theme DOM elements */
 const themeButton = document.getElementById("themeButton");
 const themeIconSun = document.getElementById("themeIconSun");
@@ -1574,6 +1606,7 @@ async function start() {
 
   applyBackgroundImage();
   applyLogo();
+  applyFavicons();
   applyNextcloudButton();
   applyAdhocButton();
 

launch.html

@@ -4,9 +4,9 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Jitsi Meeting</title>
-    <link href="assets/images/favicon.ico" rel="alternate icon">
-    <link href="assets/images/apple-touch-icon.png" rel="apple-touch-icon" sizes="180x180">
-    <link href="assets/images/favicon.svg" rel="icon" type="image/svg+xml">
+    <link id="faviconIco" href="assets/images/favicon.ico" rel="alternate icon">
+    <link id="appleTouchIcon" href="assets/images/apple-touch-icon.png" rel="apple-touch-icon" sizes="180x180">
+    <link id="faviconSvg" href="assets/images/favicon.svg" rel="icon" type="image/svg+xml">
     <link rel="stylesheet" href="assets/css/launch.css">
   </head>