| // Copyright (c) 2014, 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 |
| |
| /// @assertion void focus() |
| /// Gives keyboard focus to the current element. |
| /// @description Checks that focus event happens when focus() is called. |
| |
| import "dart:html"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var body = document.body; |
| var x = new ButtonElement(); |
| body.append(x); |
| |
| asyncStart(); |
| x.onFocus.listen((e) { |
| asyncEnd(); |
| }); |
| |
| x.focus(); |
| } |