| // Copyright (c) 2019, 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. |
| |
| // @dart = 2.9 |
| |
| @JS() |
| library postmessage_anonymous_test; |
| |
| import 'dart:async'; |
| import 'dart:html'; |
| import 'package:expect/expect.dart'; |
| import 'package:js/js.dart'; |
| |
| const String JS_CODE = """ |
| window.addEventListener('message', handler); |
| function handler(e) { |
| var data = e.data; |
| if (typeof data == 'string') return; |
| if (data.recipient != 'JS') return; |
| var response = {recipient: 'DART', msg: data.msg}; |
| window.removeEventListener('message', handler); |
| window.postMessage(response, '*'); |
| } |
| """; |
| |
| const String TEST_MSG = "hello world"; |
| |
| @JS() |
| @anonymous |
| class Message { |
| external String get recipient; |
| external String get msg; |
| external factory Message({String recipient, String msg}); |
| } |
| |
| main() { |
| var subscription; |
| subscription = window.onMessage.listen((e) { |
| var data = e.data; |
| if (data is String) return; |
| if (data['recipient'] != 'DART') return; |
| subscription.cancel(); |
| Expect.equals(TEST_MSG, data['msg']); |
| }); |
| injectSource(JS_CODE); |
| window.postMessage(Message(recipient: 'JS', msg: TEST_MSG), '*'); |
| } |
| |
| void injectSource(String code) { |
| final script = new ScriptElement(); |
| script.type = 'text/javascript'; |
| script.innerHtml = code; |
| document.body.append(script); |
| } |