move to manifest 3

manifest.json

@@ -1,24 +1,31 @@
 {
-   "page_action": {
-      "default_icon": "icons/128.png",
-      "default_popup": "scripts/popup.html",
-      "default_title": "show the Openconnect cookie/cmd line"
-   },
-   "description": "easily extract and display the VPN cookie to use with openconnect and Cisco AnyConnect Servers.",
-   "icons": {
-      "128": "icons/128.png",
-      "26": "icons/26.png",
-      "32": "icons/32.png",
-      "48": "icons/48.png"
-   },
-   "manifest_version": 2,
-   "name": "OpenAnyconnect Cookie Tray (Uni Lincoln)",
-   "offline_enabled": false,
-   "permissions": ["declarativeContent", "activeTab", "cookies", "https://remote.lincoln.ac.uk/*" ],
-   "short_name": "cookietray",
-   "version": "0.0.2",
-   "background": {
-      "scripts": ["scripts/background.js"],
-      "persistent": false
-    }  
-}
+  "description": "easily extract and display the VPN cookie to use with openconnect and Cisco AnyConnect Servers.",
+  "icons": {
+    "128": "icons/128.png",
+    "26": "icons/26.png",
+    "32": "icons/32.png",
+    "48": "icons/48.png"
+  },
+  "manifest_version": 3,
+  "name": "OpenAnyconnect Cookie Tray (Uni Lincoln)",
+  "offline_enabled": false,
+  "permissions": [
+    "declarativeContent",
+    "activeTab",
+    "cookies"
+  ],
+  "short_name": "cookietray",
+  "version": "0.1.0",
+  "background": {
+    "service_worker": "service_worker.js"
+  },
+  "action": {
+    "default_icon": "icons/128.png",
+    "default_popup": "scripts/popup.html",
+    "default_title": "show the Openconnect cookie/cmd line"
+  },
+  "content_security_policy": {},
+  "host_permissions": [
+    "https://remote.lincoln.ac.uk/*"
+  ]
+}

service_worker.js

@@ -0,0 +1,18 @@
+chrome.runtime.onInstalled.addListener(function() {
+  // Replace all rules ...
+  chrome.declarativeContent.onPageChanged.removeRules(undefined, function() {
+    // With a new rule ...
+    chrome.declarativeContent.onPageChanged.addRules([
+      {
+        // That fires when a page's URL contains a 'g' ...
+        conditions: [
+          new chrome.declarativeContent.PageStateMatcher({
+            pageUrl: { urlContains: 'https://remote.lincoln.ac.uk' },
+          })
+        ],
+        // And shows the extension's page action.
+        actions: [ new chrome.declarativeContent.ShowPageAction() ]
+      }
+    ]);
+  });
+});