Leaf Petersen
b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
56 lines
1.4 KiB
Dart
56 lines
1.4 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.9
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@JS()
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library postmessage_anonymous_test;
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import 'dart:async';
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import 'dart:html';
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import 'package:expect/expect.dart';
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import 'package:js/js.dart';
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const String JS_CODE = """
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window.addEventListener('message', handler);
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function handler(e) {
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var data = e.data;
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if (typeof data == 'string') return;
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if (data.recipient != 'JS') return;
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var response = {recipient: 'DART', msg: data.msg};
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window.removeEventListener('message', handler);
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window.postMessage(response, '*');
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}
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""";
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const String TEST_MSG = "hello world";
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@JS()
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@anonymous
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class Message {
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external String get recipient;
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external String get msg;
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external factory Message({String recipient, String msg});
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}
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main() {
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var subscription;
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subscription = window.onMessage.listen((e) {
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var data = e.data;
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if (data is String) return;
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if (data['recipient'] != 'DART') return;
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subscription.cancel();
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Expect.equals(TEST_MSG, data['msg']);
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});
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injectSource(JS_CODE);
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window.postMessage(Message(recipient: 'JS', msg: TEST_MSG), '*');
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}
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void injectSource(String code) {
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final script = new ScriptElement();
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script.type = 'text/javascript';
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script.innerHtml = code;
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document.body.append(script);
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}
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