dom/clients/manager/ClientManagerOpParent.cpp
author Kris Maglione <maglione.k@gmail.com>
Thu, 14 Feb 2019 17:54:00 -0800
changeset 517406 7436c0f5b8b1583d20d5ea2d1d9d3b2c665bdf33
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
child 526866 389b6bbd76dbdf3357453f0989bbe9595751b7ae
permissions -rw-r--r--
Fix botched backout (bug 1524687). r=bustage

/* -*- 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/. */

#include "ClientManagerOpParent.h"

#include "ClientManagerService.h"
#include "mozilla/ipc/BackgroundParent.h"

namespace mozilla {
namespace dom {

using mozilla::ipc::BackgroundParent;

template <typename Method, typename... Args>
void ClientManagerOpParent::DoServiceOp(Method aMethod, Args&&... aArgs) {
  // Note, we need perfect forarding of the template type in order
  // to allow already_AddRefed<> to be passed as an arg.
  RefPtr<ClientOpPromise> p =
      (mService->*aMethod)(std::forward<Args>(aArgs)...);

  // Capturing `this` is safe here because we disconnect the promise in
  // ActorDestroy() which ensures neither lambda is called if the actor
  // is destroyed before the source operation completes.
  p->Then(GetCurrentThreadSerialEventTarget(), __func__,
          [this](const mozilla::dom::ClientOpResult& aResult) {
            mPromiseRequestHolder.Complete();
            Unused << PClientManagerOpParent::Send__delete__(this, aResult);
          },
          [this](nsresult aRv) {
            mPromiseRequestHolder.Complete();
            Unused << PClientManagerOpParent::Send__delete__(this, aRv);
          })
      ->Track(mPromiseRequestHolder);
}

void ClientManagerOpParent::ActorDestroy(ActorDestroyReason aReason) {
  mPromiseRequestHolder.DisconnectIfExists();
}

ClientManagerOpParent::ClientManagerOpParent(ClientManagerService* aService)
    : mService(aService) {
  MOZ_DIAGNOSTIC_ASSERT(mService);
}

void ClientManagerOpParent::Init(const ClientOpConstructorArgs& aArgs) {
  switch (aArgs.type()) {
    case ClientOpConstructorArgs::TClientNavigateArgs: {
      DoServiceOp(&ClientManagerService::Navigate,
                  aArgs.get_ClientNavigateArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientMatchAllArgs: {
      DoServiceOp(&ClientManagerService::MatchAll,
                  aArgs.get_ClientMatchAllArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientClaimArgs: {
      DoServiceOp(&ClientManagerService::Claim, aArgs.get_ClientClaimArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientGetInfoAndStateArgs: {
      DoServiceOp(&ClientManagerService::GetInfoAndState,
                  aArgs.get_ClientGetInfoAndStateArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientOpenWindowArgs: {
      RefPtr<ContentParent> contentParent =
          BackgroundParent::GetContentParent(Manager()->Manager());
      DoServiceOp(&ClientManagerService::OpenWindow,
                  aArgs.get_ClientOpenWindowArgs(), contentParent.forget());
      break;
    }
    default: {
      MOZ_ASSERT_UNREACHABLE("Unknown Client operation!");
      break;
    }
  }
}

}  // namespace dom
}  // namespace mozilla