1 files changed, 100 insertions, 0 deletions
diff --git a/dom/ipc/jsactor/JSActorManager.h b/dom/ipc/jsactor/JSActorManager.h
new file mode 100644
index 0000000000..86efa9d7af
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+++ b/dom/ipc/jsactor/JSActorManager.h
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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 http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_JSActorManager_h
+#define mozilla_dom_JSActorManager_h
+
+#include "js/TypeDecls.h"
+#include "mozilla/dom/JSActor.h"
+#include "nsRefPtrHashtable.h"
+#include "nsString.h"
+
+namespace mozilla {
+class ErrorResult;
+
+namespace ipc {
+class IProtocol;
+}
+
+namespace dom {
+
+class JSActorProtocol;
+class JSActorService;
+
+class JSActorManager : public nsISupports {
+ public:
+  /**
+   * Get or create an actor by its name.
+   *
+   * Will set an error on |aRv| if the actor fails to be constructed.
+   */
+  already_AddRefed<JSActor> GetActor(JSContext* aCx, const nsACString& aName,
+                                     ErrorResult& aRv);
+
+  /**
+   * Look up an existing actor by its name, returning nullptr if it doesn't
+   * already exist. Will not attempt to create the actor.
+   */
+  already_AddRefed<JSActor> GetExistingActor(const nsACString& aName);
+
+  /**
+   * Handle receiving a raw message from the other side.
+   */
+  void ReceiveRawMessage(const JSActorMessageMeta& aMetadata,
+                         Maybe<ipc::StructuredCloneData>&& aData,
+                         Maybe<ipc::StructuredCloneData>&& aStack);
+
+ protected:
+  /**
+   * The actor is about to be destroyed so prevent it from sending any
+   * more messages.
+   */
+  void JSActorWillDestroy();
+
+  /**
+   * Lifecycle method which will fire the `didDestroy` methods on relevant
+   * actors.
+   */
+  void JSActorDidDestroy();
+
+  /**
+   * Return the protocol with the given name, if it is supported by the current
+   * actor.
+   */
+  virtual already_AddRefed<JSActorProtocol> MatchingJSActorProtocol(
+      JSActorService* aActorSvc, const nsACString& aName, ErrorResult& aRv) = 0;
+
+  /**
+   * Initialize a JSActor instance given the constructed JS object.
+   * `aMaybeActor` may be `nullptr`, which should construct the default empty
+   * actor.
+   */
+  virtual already_AddRefed<JSActor> InitJSActor(
+      JS::Handle<JSObject*> aMaybeActor, const nsACString& aName,
+      ErrorResult& aRv) = 0;
+
+  /**
+   * Return this native actor. This should be the same object which is
+   * implementing `JSActorManager`.
+   */
+  virtual mozilla::ipc::IProtocol* AsNativeActor() = 0;
+
+ private:
+  friend class JSActorService;
+
+  /**
+   * Note that a particular actor name has been unregistered, and fire the
+   * `didDestroy` method on the actor, if it's been initialized.
+   */
+  void JSActorUnregister(const nsACString& aName);
+
+  nsRefPtrHashtable<nsCStringHashKey, JSActor> mJSActors;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_JSActorManager_h