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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#include "nsISupports.idl"
+
+%{C++
+namespace mozilla {
+namespace dom {
+class ContentChild;
+class JSActorManager;
+} // namespace dom
+} // namespace mozilla
+%}
+[ptr] native ContentChildPtr(mozilla::dom::ContentChild);
+[ptr] native JSActorManagerPtr(mozilla::dom::JSActorManager);
+
+webidl JSProcessActorChild;
+
+/**
+ * Child actor interface for a process which can host DOM content.
+ *
+ * Implemented by either `InProcessChild` for the parent process, or
+ * `ContentChild` for a content process.
+ */
+[scriptable, builtinclass, uuid(b0c6e5f3-02f1-4f11-a0af-336fc231f3bf)]
+interface nsIDOMProcessChild: nsISupports {
+ %{C++
+ /**
+ * Get the nsIDOMProcessChild singleton for this content process. This will
+ * either be an InProcessChild in the parent process, or ContentChild in the
+ * child process.
+ *
+ * Implemented in ContentChild.cpp
+ */
+ static nsIDOMProcessChild* GetSingleton();
+ %}
+
+ /**
+ * Internal child process ID. `0` is reserved for the parent process.
+ */
+ [infallible] readonly attribute unsigned long long childID;
+
+ /**
+ * Lookup a JSProcessActorChild managed by this interface by name.
+ */
+ [implicit_jscontext] JSProcessActorChild getActor(in ACString name);
+ JSProcessActorChild getExistingActor(in ACString name);
+
+ /** Can the actor still send messages? */
+ [infallible] readonly attribute boolean canSend;
+
+ [notxpcom, nostdcall] ContentChildPtr AsContentChild();
+
+ /** Cast this nsIDOMProcessChild to a JSActorManager */
+ [notxpcom, nostdcall] JSActorManagerPtr AsJSActorManager();
+};