| // 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. |
| |
| /// @assertion Point offsetTo(Element parent) |
| /// Provides the offset of this element's borderEdge relative to the specified |
| /// parent. |
| /// This is the Dart equivalent of jQuery's position method. Unlike jQuery's |
| /// position, however, parent can be any parent element of this, rather than |
| /// only this's immediate offsetParent. If the specified element is not an |
| /// offset parent or transitive offset parent to this element, an ArgumentError |
| /// is thrown. |
| /// @description Checks that ArgumentError is thrown if parent is not an |
| /// offset parent or transitive offset parent. |
| |
| import "dart:html"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var x = new ButtonElement(); |
| var y = new ButtonElement(); |
| document.body?.append(x); |
| document.body?.append(y); |
| |
| Expect.throws(() { |
| y.offsetTo(x); |
| }, (e) => e is ArgumentError); |
| } |