extension: Hide toggle for SWF redirect on browsers without support

web/packages/extension/assets/css/options.css

@@ -1,3 +1,7 @@
+.hidden {
+    display: none;
+}
+
 .logo {
     max-width: 224px;
 }

web/packages/extension/src/background.ts

@@ -141,14 +141,18 @@ async function enableSWFTakeover() {
             removeRuleIds: [1, 2, 3],
             addRules: rules,
         });
+    } else {
+        utils.storage.sync.set({ responseHeadersUnsupported: true });
     }
 }
 
 async function disableSWFTakeover() {
-    if (utils.declarativeNetRequest) {
+    if (utils.declarativeNetRequest && (await isHeaderConditionSupported())) {
         await utils.declarativeNetRequest.updateDynamicRules({
             removeRuleIds: [1, 2, 3],
         });
+    } else {
+        utils.storage.sync.set({ responseHeadersUnsupported: true });
     }
 }
 

web/packages/extension/src/options.ts

@@ -2,7 +2,15 @@ import * as utils from "./utils";
 import { bindOptions, resetOptions } from "./common";
 import { buildInfo } from "ruffle-core";
 
-window.addEventListener("DOMContentLoaded", () => {
+window.addEventListener("DOMContentLoaded", async () => {
+    const data = await utils.storage.sync.get({
+        responseHeadersUnsupported: false,
+    });
+    if (data["responseHeadersUnsupported"]) {
+        document
+            .getElementById("swf_takeover")!
+            .parentElement!.classList.add("hidden");
+    }
     document.title = utils.i18n.getMessage("settings_page");
     {
         const vt = document.getElementById("version-text")!;

web/packages/extension/src/popup.ts

@@ -155,6 +155,14 @@ async function displayTabStatus() {
 }
 
 window.addEventListener("DOMContentLoaded", async () => {
+    const data = await utils.storage.sync.get({
+        responseHeadersUnsupported: false,
+    });
+    if (data["responseHeadersUnsupported"]) {
+        document
+            .getElementById("swf_takeover")!
+            .parentElement!.classList.add("hidden");
+    }
     bindOptions((options) => {
         savedOptions = options;
         optionsChanged();