Expose a keyboard shortcut to copy the Dart app ID

dwds/debug_extension_mv3/web/background.dart

@@ -53,6 +53,9 @@ void _registerListeners() {
   chrome.webNavigation.onCommitted
       .addListener(allowInterop(_detectNavigationAwayFromDartApp));
 
+  chrome.commands.onCommand
+      .addListener(allowInterop(_maybeSendCopyAppIdRequest));
+
   // Detect clicks on the Dart Debug Extension icon.
   onExtensionIconClicked(
     allowInterop(
@@ -67,7 +70,6 @@ void _registerListeners() {
 Future<void> _handleRuntimeMessages(
   dynamic jsRequest,
   MessageSender sender,
-  // ignore: avoid-unused-parameters
   Function sendResponse,
 ) async {
   if (jsRequest is! String) return;
@@ -155,6 +157,8 @@ Future<void> _handleRuntimeMessages(
       _setWarningIcon();
     },
   );
+
+  sendResponse(defaultResponse);
 }
 
 Future<void> _detectNavigationAwayFromDartApp(
@@ -206,6 +210,23 @@ DebugInfo _addTabInfo(DebugInfo debugInfo, {required Tab tab}) {
   );
 }
 
+Future<bool> _maybeSendCopyAppIdRequest(String command, [Tab? tab]) async {
+  if (command != 'copyAppId') return false;
+  final tabId = (tab ?? await activeTab)?.id;
+  if (tabId == null) return false;
+  final debugInfo = await _fetchDebugInfo(tabId);
+  final workspaceName = debugInfo?.workspaceName;
+  if (workspaceName == null) return false;
+  final appId = '$workspaceName-$tabId';
+  return sendTabsMessage(
+    tabId: tabId,
+    type: MessageType.appId,
+    body: appId,
+    sender: Script.background,
+    recipient: Script.copier,
+  );
+}
+
 Future<void> _updateIcon(int activeTabId) async {
   final debugInfo = await _fetchDebugInfo(activeTabId);
   if (debugInfo == null) {

dwds/debug_extension_mv3/web/chrome_api.dart

@@ -12,6 +12,7 @@ external Chrome get chrome;
 @JS()
 @anonymous
 class Chrome {
+  external Commands get commands;
   external Debugger get debugger;
   external Devtools get devtools;
   external Notifications get notifications;
@@ -25,6 +26,20 @@ class Chrome {
 /// chrome.debugger APIs:
 /// https://developer.chrome.com/docs/extensions/reference/debugger
 
+@JS()
+@anonymous
+class Commands {
+  external OnCommandHandler get onCommand;
+}
+
+@JS()
+@anonymous
+class OnCommandHandler {
+  external void addListener(
+    void Function(String commandName, [Tab? tab]) callback,
+  );
+}
+
 @JS()
 @anonymous
 class Debugger {
@@ -228,7 +243,7 @@ class ConnectionHandler {
 @anonymous
 class OnMessageHandler {
   external void addListener(
-    void Function(dynamic, MessageSender, Function) callback,
+    dynamic Function(dynamic, MessageSender, Function) callback,
   );
 }
 
@@ -299,6 +314,13 @@ class Tabs {
 
   external dynamic remove(int tabId, void Function()? callback);
 
+  external Object sendMessage(
+    int tabId,
+    Object? message,
+    Object? options,
+    void Function() callback,
+  );
+
   external OnActivatedHandler get onActivated;
 
   external OnRemovedHandler get onRemoved;

dwds/debug_extension_mv3/web/copier.dart

@@ -0,0 +1,55 @@
+// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+@JS()
+library copier;
+
+import 'dart:html';
+
+import 'package:js/js.dart';
+
+import 'chrome_api.dart';
+import 'messaging.dart';
+
+void main() {
+  _registerListeners();
+}
+
+void _registerListeners() {
+  chrome.runtime.onMessage.addListener(
+    allowInterop(_handleRuntimeMessages),
+  );
+}
+
+void _handleRuntimeMessages(
+  dynamic jsRequest,
+  MessageSender sender,
+  Function sendResponse,
+) {
+  interceptMessage<String>(
+    message: jsRequest,
+    expectedType: MessageType.appId,
+    expectedSender: Script.background,
+    expectedRecipient: Script.copier,
+    messageHandler: _copyAppId,
+  );
+
+  sendResponse(defaultResponse);
+}
+
+void _copyAppId(String appId) {
+  final clipboard = window.navigator.clipboard;
+  if (clipboard == null) return;
+  clipboard.writeText(appId);
+  _showCopiedMessage(appId);
+}
+
+Future<void> _showCopiedMessage(String appId) async {
+  final snackbar = document.createElement('div');
+  snackbar.setInnerHtml('Copied app ID: <i>$appId</i>');
+  snackbar.classes.addAll(['snackbar', 'snackbar--info', 'show']);
+  document.body?.append(snackbar);
+  await Future.delayed(Duration(seconds: 4));
+  snackbar.remove();
+}

dwds/debug_extension_mv3/web/manifest_mv2.json

@@ -24,10 +24,20 @@
   "content_scripts": [
     {
       "matches": ["<all_urls>"],
-      "js": ["detector.dart.js"],
+      "js": ["detector.dart.js", "copier.dart.js"],
+      "css": ["static_assets/styles.css"],
       "run_at": "document_end"
     }
   ],
+  "commands": {
+    "copyAppId": {
+      "suggestedKey": {
+        "default": "Ctrl+Shift+7",
+        "mac": "Command+Shift+7"
+      },
+      "description": "Copy the app ID"
+    }
+  },
   "web_accessible_resources": ["debug_info.dart.js"],
   "options_page": "static_assets/settings.html"
 }

dwds/debug_extension_mv3/web/manifest_mv3.json

@@ -31,10 +31,20 @@
   "content_scripts": [
     {
       "matches": ["<all_urls>"],
-      "js": ["detector.dart.js"],
+      "js": ["detector.dart.js", "copier.dart.js"],
+      "css": ["static_assets/styles.css"],
       "run_at": "document_end"
     }
   ],
+  "commands": {
+    "copyAppId": {
+      "suggestedKey": {
+        "default": "Ctrl+Shift+7",
+        "mac": "Command+Shift+7"
+      },
+      "description": "Copy the app ID"
+    }
+  },
   "web_accessible_resources": [
     {
       "matches": ["<all_urls>"],

dwds/debug_extension_mv3/web/messaging.dart

@@ -7,15 +7,23 @@ library messaging;
 
 import 'dart:async';
 import 'dart:convert';
+import 'dart:js_util';
 
 import 'package:js/js.dart';
 
 import 'chrome_api.dart';
 import 'data_serializers.dart';
 import 'logger.dart';
 
+// A default response for the sendResponse callback.
+//
+// Prevents the message port from closing. See:
+// https://developer.chrome.com/docs/extensions/mv3/messaging/#simple
+final defaultResponse = jsify({'response': 'received'});
+
 enum Script {
   background,
+  copier,
   debuggerPanel,
   detector;
 
@@ -27,6 +35,7 @@ enum Script {
 enum MessageType {
   isAuthenticated,
   connectFailure,
+  appId,
   debugInfo,
   debugStateChange,
   devToolsUrl,
@@ -104,34 +113,77 @@ void interceptMessage<T>({
   }
 }
 
+/// Send a message using the chrome.runtime.sendMessage API.
 Future<bool> sendRuntimeMessage({
   required MessageType type,
   required String body,
   required Script sender,
   required Script recipient,
+}) =>
+    _sendMessage(
+      type: type,
+      body: body,
+      sender: sender,
+      recipient: recipient,
+    );
+
+/// Send a message using the chrome.tabs.sendMessage API.
+Future<bool> sendTabsMessage({
+  required int tabId,
+  required MessageType type,
+  required String body,
+  required Script sender,
+  required Script recipient,
+}) =>
+    _sendMessage(
+      tabId: tabId,
+      type: type,
+      body: body,
+      sender: sender,
+      recipient: recipient,
+    );
+
+Future<bool> _sendMessage({
+  required MessageType type,
+  required String body,
+  required Script sender,
+  required Script recipient,
+  int? tabId,
 }) {
   final message = Message(
     to: recipient,
     from: sender,
     type: type,
     body: body,
-  );
+  ).toJSON();
   final completer = Completer<bool>();
-  chrome.runtime.sendMessage(
-    // id
-    null,
-    message.toJSON(),
-    // options
-    null,
-    allowInterop(() {
-      final error = chrome.runtime.lastError;
-      if (error != null) {
-        debugError(
-          'Error sending $type to $recipient from $sender: ${error.message}',
-        );
-      }
-      completer.complete(error != null);
-    }),
-  );
+  void responseHandler([dynamic _]) {
+    final error = chrome.runtime.lastError;
+    if (error != null) {
+      debugError(
+        'Error sending $type to $recipient from $sender: ${error.message}',
+      );
+    }
+    completer.complete(error != null);
+  }
+
+  if (tabId != null) {
+    chrome.tabs.sendMessage(
+      tabId,
+      message,
+      // options
+      null,
+      allowInterop(responseHandler),
+    );
+  } else {
+    chrome.runtime.sendMessage(
+      // id
+      null,
+      message,
+      // options
+      null,
+      allowInterop(responseHandler),
+    );
+  }
   return completer.future;
 }

dwds/debug_extension_mv3/web/static_assets/styles.css

@@ -57,16 +57,16 @@ iframe {
 }
 
 .debugger-card > .mdl-card__title {
+  background: url("debugger_settings.png");
   background-position: center;
   background-repeat: no-repeat;
-  background: url("debugger_settings.png");
   height: 200px;
 }
 
 .inspector-card > .mdl-card__title {
+  background: url("inspect_widget.png");
   background-position: center;
   background-repeat: no-repeat;
-  background: url("inspect_widget.png");
   height: 300px;
 }
 
@@ -75,20 +75,22 @@ h6 {
 }
 
 .snackbar {
-  border-radius: 2px;
   bottom: 0px;
   color: #eeeeee;
+  font-family:  Roboto, 'Helvetica Neue', sans-serif;
+  left: 0px;
   padding: 16px;
   position: fixed;
+  right: 0px;
   text-align: center;
   visibility: hidden;
   width: 100%;
   z-index: 1;
 }
 
 .snackbar > a {
-  font-weight: bold;
   color: #eeeeee;
+  font-weight: bold;
 }
 
 .snackbar--info {