dom/clients/manager/ClientSourceChild.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "ClientSourceChild.h"
   8
   9 #include "ClientSource.h"
  10 #include "ClientSourceOpChild.h"
  11 #include "mozilla/dom/ClientIPCTypes.h"
  12 #include "mozilla/Unused.h"
  13
  14 namespace mozilla::dom {
  15
  16 using mozilla::ipc::IPCResult;
  17
  18 void ClientSourceChild::ActorDestroy(ActorDestroyReason aReason) {
  19   if (mSource) {
  20     mSource->RevokeActor(this);
  21
  22     // Revoking the actor link should automatically cause the owner
  23     // to call RevokeOwner() as well.
  24     MOZ_DIAGNOSTIC_ASSERT(!mSource);
  25   }
  26 }
  27
  28 PClientSourceOpChild* ClientSourceChild::AllocPClientSourceOpChild(
  29     const ClientOpConstructorArgs& aArgs) {
  30   return new ClientSourceOpChild();
  31 }
  32
  33 bool ClientSourceChild::DeallocPClientSourceOpChild(
  34     PClientSourceOpChild* aActor) {
  35   static_cast<ClientSourceOpChild*>(aActor)->ScheduleDeletion();
  36   return true;
  37 }
  38
  39 IPCResult ClientSourceChild::RecvPClientSourceOpConstructor(
  40     PClientSourceOpChild* aActor, const ClientOpConstructorArgs& aArgs) {
  41   auto actor = static_cast<ClientSourceOpChild*>(aActor);
  42   actor->Init(aArgs);
  43   return IPC_OK();
  44 }
  45
  46 mozilla::ipc::IPCResult ClientSourceChild::RecvEvictFromBFCache() {
  47   if (mSource) {
  48     mSource->EvictFromBFCache();
  49   }
  50
  51   return IPC_OK();
  52 }
  53
  54 ClientSourceChild::ClientSourceChild(const ClientSourceConstructorArgs& aArgs)
  55     : mSource(nullptr), mTeardownStarted(false) {}
  56
  57 void ClientSourceChild::SetOwner(ClientThing<ClientSourceChild>* aThing) {
  58   MOZ_DIAGNOSTIC_ASSERT(aThing);
  59   MOZ_DIAGNOSTIC_ASSERT(!mSource);
  60   mSource = static_cast<ClientSource*>(aThing);
  61 }
  62
  63 void ClientSourceChild::RevokeOwner(ClientThing<ClientSourceChild>* aThing) {
  64   MOZ_DIAGNOSTIC_ASSERT(mSource);
  65   MOZ_DIAGNOSTIC_ASSERT(mSource == static_cast<ClientSource*>(aThing));
  66   mSource = nullptr;
  67 }
  68
  69 ClientSource* ClientSourceChild::GetSource() const { return mSource; }
  70
  71 void ClientSourceChild::MaybeStartTeardown() {
  72   if (mTeardownStarted) {
  73     return;
  74   }
  75   mTeardownStarted = true;
  76   Unused << SendTeardown();
  77 }
  78
  79 }  // namespace mozilla::dom