Auto merge of #23637 - gterzian:continue-message-port, r=jdm

Continue message port

<!-- Please describe your changes on the following line: -->
Fixes #7457.
Fixes #12715.
Fixes #12717.
Fixes #16095.
Fixes #18969.

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- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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components/script/dom/webidls/DedicatedWorkerGlobalScope.webidl

@@ -5,9 +5,9 @@
 // https://html.spec.whatwg.org/multipage/#dedicatedworkerglobalscope
 [Global=(Worker,DedicatedWorker), Exposed=DedicatedWorker]
 /*sealed*/ interface DedicatedWorkerGlobalScope : WorkerGlobalScope {
-  [Throws]
-  void postMessage(any message/*, optional sequence<Transferable> transfer*/);
-           attribute EventHandler onmessage;
+  [Throws] void postMessage(any message, sequence<object> transfer);
+  [Throws] void postMessage(any message, optional PostMessageOptions options = {});
+  attribute EventHandler onmessage;
 
   void close();
 };

components/script/dom/webidls/DissimilarOriginWindow.webidl

@@ -25,7 +25,8 @@ interface DissimilarOriginWindow : GlobalScope {
 
   void close();
   readonly attribute boolean closed;
-  [Throws] void postMessage(any message, DOMString targetOrigin);
+  [Throws] void postMessage(any message, USVString targetOrigin, optional sequence<object> transfer /*= []*/);
+  [Throws] void postMessage(any message, optional WindowPostMessageOptions options = {});
   attribute any opener;
   void blur();
   void focus();

components/script/dom/webidls/ExtendableMessageEvent.webidl

@@ -12,7 +12,7 @@ interface ExtendableMessageEvent : ExtendableEvent {
   readonly attribute DOMString origin;
   readonly attribute DOMString lastEventId;
   // [SameObject] readonly attribute (Client or ServiceWorker /*or MessagePort*/)? source;
-  // readonly attribute FrozenArray<MessagePort>? ports;
+  readonly attribute /*FrozenArray<MessagePort>*/any ports;
 };
 
 dictionary ExtendableMessageEventInit : ExtendableEventInit {

components/script/dom/webidls/MessageChannel.webidl

@@ -0,0 +1,14 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+/*
+ * The origin of this IDL file is:
+ * https://html.spec.whatwg.org/multipage/#messagechannel
+ */
+
+[Exposed=(Window,Worker)]
+interface MessageChannel {
+  [Throws] constructor();
+  readonly attribute MessagePort port1;
+  readonly attribute MessagePort port2;
+};

components/script/dom/webidls/MessageEvent.webidl

@@ -12,7 +12,7 @@ interface MessageEvent : Event {
   // FIXME(#22617): WindowProxy is not exposed in Worker globals
   readonly attribute object? source;
   //readonly attribute (WindowProxy or MessagePort)? source;
-  //readonly attribute MessagePort[]? ports;
+  readonly attribute /*FrozenArray<MessagePort>*/any ports;
 };
 
 dictionary MessageEventInit : EventInit {
@@ -22,5 +22,7 @@ dictionary MessageEventInit : EventInit {
   //DOMString channel;
   Window? source;
   //(WindowProxy or MessagePort)? source;
-  //sequence<MessagePort> ports;
+  sequence<MessagePort> ports;
 };
+
+typedef (/*WindowProxy or */MessagePort or ServiceWorker) MessageEventSource;

components/script/dom/webidls/MessagePort.webidl

@@ -0,0 +1,23 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+/*
+ * The origin of this IDL file is:
+ * https://html.spec.whatwg.org/multipage/#messageport
+ */
+
+[Exposed=(Window,Worker)]
+interface MessagePort : EventTarget {
+  [Throws] void postMessage(any message, sequence<object> transfer /*= []*/);
+  [Throws] void postMessage(any message, optional PostMessageOptions options = {});
+  void start();
+  void close();
+
+  // event handlers
+  attribute EventHandler onmessage;
+  attribute EventHandler onmessageerror;
+};
+
+dictionary PostMessageOptions {
+  sequence<object> transfer;
+};

components/script/dom/webidls/ServiceWorker.webidl

@@ -7,7 +7,8 @@
 interface ServiceWorker : EventTarget {
   readonly attribute USVString scriptURL;
   readonly attribute ServiceWorkerState state;
-  [Throws] void postMessage(any message/*, optional sequence<object> transfer = []*/);
+  [Throws] void postMessage(any message, sequence<object> transfer);
+  [Throws] void postMessage(any message, optional PostMessageOptions options = {});
 
   // event
   attribute EventHandler onstatechange;

components/script/dom/webidls/Window.webidl

@@ -63,9 +63,10 @@
   unsigned long requestAnimationFrame(FrameRequestCallback callback);
   void cancelAnimationFrame(unsigned long handle);
 
-  //void postMessage(any message, DOMString targetOrigin, optional sequence<Transferable> transfer);
   [Throws]
-  void postMessage(any message, DOMString targetOrigin);
+  void postMessage(any message, USVString targetOrigin, optional sequence<object> transfer /*= []*/);
+  [Throws]
+  void postMessage(any message, optional WindowPostMessageOptions options = {});
 
   // also has obsolete members
 };
@@ -173,3 +174,8 @@ partial interface Window {
    [Pref="css.animations.testing.enabled"]
    readonly attribute unsigned long runningAnimationCount;
 };
+
+dictionary WindowPostMessageOptions {
+   USVString targetOrigin = "/";
+   sequence<object> transfer;
+};

components/script/dom/webidls/Worker.webidl

@@ -14,8 +14,8 @@ interface Worker : EventTarget {
   [Throws] constructor(USVString scriptURL, optional WorkerOptions options = {});
   void terminate();
 
-  [Throws] void postMessage(any message/*, sequence<object> transfer*/);
-  // void postMessage(any message, optional PostMessageOptions options);
+  [Throws] void postMessage(any message, sequence<object> transfer);
+  [Throws] void postMessage(any message, optional PostMessageOptions options = {});
   attribute EventHandler onmessage;
   attribute EventHandler onmessageerror;
 };