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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
interface mixin JSActor {
void sendAsyncMessage(DOMString messageName,
optional any obj);
Promise<any> sendQuery(DOMString messageName,
optional any obj);
readonly attribute UTF8String name;
* WebIDL callback interface version of the nsIObserver interface for use when
* calling the observe method on JSActors.
* NOTE: This isn't marked as ChromeOnly, as it has no interface object, and
* thus cannot be conditionally exposed.
callback interface MozObserverCallback {
void observe(nsISupports subject, ByteString topic, DOMString? data);
* WebIDL callback interface calling the `willDestroy`, `didDestroy`, and
* `actorCreated` methods on JSActors.
callback MozJSActorCallback = void();
* The willDestroy method, if present, will be called at the last opportunity
* to send messages to the remote side, giving implementers the chance to clean
* up and send final messages.
* The didDestroy method, if present, will be called after the actor is no
* longer able to receive any more messages.
* The actorCreated method, if present, will be called immediately after the
* actor has been created and initialized.
* NOTE: Messages may be received between willDestroy and didDestroy, but they
* may not be sent.
dictionary MozJSActorCallbacks {
[ChromeOnly] MozJSActorCallback willDestroy;
[ChromeOnly] MozJSActorCallback didDestroy;
[ChromeOnly] MozJSActorCallback actorCreated;