| // Copyright 2022 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // https://html.spec.whatwg.org/multipage/web-messaging.html#messageport |
| // https://html.spec.whatwg.org/dev/web-messaging.html#message-ports |
| interface MessagePort /* : EventTarget */ { |
| // [RaisesException] |
| void postMessage(USVString message); |
| // void postMessage(USVString message, sequence<USVString> transfer); |
| // TODO: Support sequence<object>: b/218501774 |
| // void postMessage(any message, sequence<object> transfer); |
| // TODO: Support overloads with dictionary parameter: b/218506730 |
| // void postMessage(any message, optional StructuredSerializeOptions |
| // options); |
| void start(); |
| void close(); |
| |
| // event handlers |
| attribute EventHandler onmessage; |
| attribute EventHandler onmessageerror; |
| }; |