Add alt text for link screen QR code

_locales/en/messages.json

@@ -1282,6 +1282,10 @@
     "message": "Link New Device",
     "description": "The menu option shown in Signal iOS to add a new linked device"
   },
+  "LinkScreen__scan-this-code": {
+    "message": "Scan this code in the Signal app on your phone",
+    "description": "Alt text for the QR code on the device link screen"
+  },
   "Preferences--device-name": {
     "message": "Device name",
     "description": "The label in settings panel shown for the user-provided name for this desktop instance"

ts/util/lint/exceptions.json

@@ -13693,6 +13693,13 @@
     "reasonCategory": "usageTrusted",
     "updated": "2021-09-15T21:07:50.995Z"
   },
+  {
+    "rule": "jQuery-$(",
+    "path": "ts/views/install_view.js",
+    "line": "        this.$('#qr img').attr('alt', window.i18n('LinkScreen__scan-this-code'));",
+    "reasonCategory": "usageTrusted",
+    "updated": "2021-09-28T00:13:42.086Z"
+  },
   {
     "rule": "jQuery-html(",
     "path": "ts/views/install_view.js",
@@ -13805,6 +13812,13 @@
     "reasonCategory": "usageTrusted",
     "updated": "2021-09-15T21:07:50.995Z"
   },
+  {
+    "rule": "jQuery-$(",
+    "path": "ts/views/install_view.ts",
+    "line": "    this.$('#qr img').attr('alt', window.i18n('LinkScreen__scan-this-code'));",
+    "reasonCategory": "usageTrusted",
+    "updated": "2021-09-28T00:13:42.086Z"
+  },
   {
     "rule": "jQuery-html(",
     "path": "ts/views/install_view.ts",
@@ -14274,4 +14288,4 @@
     "reasonCategory": "usageTrusted",
     "updated": "2021-09-17T21:02:59.414Z"
   }
-]
+]

ts/views/install_view.ts

@@ -169,6 +169,7 @@ Whisper.InstallView = Whisper.View.extend({
     this.qr = new window.QRCode(this.$('#qr')[0]).makeCode(url);
     this.$('#qr').removeAttr('title');
     this.$('#qr').addClass('ready');
+    this.$('#qr img').attr('alt', window.i18n('LinkScreen__scan-this-code'));
   },
   setDeviceNameDefault() {
     const deviceName = window.textsecure.storage.user.getDeviceName();