InProcessParent.h - mozsearch

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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_InProcessParent_h

#define mozilla_dom_InProcessParent_h

#include "mozilla/dom/PInProcessParent.h"

#include "mozilla/dom/JSProcessActorParent.h"

#include "mozilla/dom/ProcessActor.h"

#include "mozilla/dom/RemoteType.h"

#include "mozilla/StaticPtr.h"

#include "nsIDOMProcessParent.h"

namespace mozilla::dom {

class PWindowGlobalParent;

class PWindowGlobalChild;

class InProcessChild;

/**

 * The `InProcessParent` class represents the parent half of a main-thread to

 * main-thread actor.

 * The `PInProcess` actor should be used as an alternate manager to `PContent`

 * for async actors which want to communicate uniformly between Content->Chrome

 * and Chrome->Chrome situations.

*/

class InProcessParent final : public nsIDOMProcessParent,

                              public nsIObserver,

                              public PInProcessParent,

                              public ProcessActor {

 public:

  friend class InProcessChild;

  friend class PInProcessParent;

  NS_DECL_ISUPPORTS

  NS_DECL_NSIDOMPROCESSPARENT

  NS_DECL_NSIOBSERVER

  // Get the singleton instance of this actor.

  static InProcessParent* Singleton();

  // Get the child side of the in-process child actor |aActor|. If |aActor| is

  // not an in-process actor, or is not connected, this method will return

  // |nullptr|.

  static IProtocol* ChildActorFor(IProtocol* aActor);

  const nsACString& GetRemoteType() const override { return NOT_REMOTE_TYPE; };

 protected:

  already_AddRefed<JSActor> InitJSActor(JS::Handle<JSObject*> aMaybeActor,

                                        const nsACString& aName,

                                        ErrorResult& aRv) override;

  mozilla::ipc::IProtocol* AsNativeActor() override { return this; }

 private:

  // Lifecycle management is implemented in InProcessImpl.cpp

  virtual void ActorDestroy(ActorDestroyReason aWhy) override;

  ~InProcessParent() = default;

  static void Startup();

  static void Shutdown();

  static StaticRefPtr<InProcessParent> sSingleton;

  static bool sShutdown;

  nsRefPtrHashtable<nsCStringHashKey, JSProcessActorParent> mProcessActors;

};

}  // namespace mozilla::dom

#endif  // defined(mozilla_dom_InProcessParent_h)