dom/ipc/jsactor/JSWindowActorParent.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   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 "mozilla/dom/JSWindowActorBinding.h"
   8 #include "mozilla/dom/JSWindowActorParent.h"
   9 #include "mozilla/dom/BrowserParent.h"
  10 #include "mozilla/dom/ContentParent.h"
  11 #include "mozilla/dom/WindowGlobalChild.h"
  12 #include "mozilla/dom/WindowGlobalParent.h"
  13 #include "mozilla/dom/MessageManagerBinding.h"
  14
  15 namespace mozilla::dom {
  16
  17 JSWindowActorParent::~JSWindowActorParent() { MOZ_ASSERT(!mManager); }
  18
  19 JSObject* JSWindowActorParent::WrapObject(JSContext* aCx,
  20                                           JS::Handle<JSObject*> aGivenProto) {
  21   return JSWindowActorParent_Binding::Wrap(aCx, this, aGivenProto);
  22 }
  23
  24 WindowGlobalParent* JSWindowActorParent::GetManager() const { return mManager; }
  25
  26 WindowContext* JSWindowActorParent::GetWindowContext() const {
  27   return mManager;
  28 }
  29
  30 void JSWindowActorParent::Init(const nsACString& aName,
  31                                WindowGlobalParent* aManager) {
  32   MOZ_ASSERT(!mManager, "Cannot Init() a JSWindowActorParent twice!");
  33   SetName(aName);
  34   mManager = aManager;
  35
  36   InvokeCallback(CallbackFunction::ActorCreated);
  37 }
  38
  39 void JSWindowActorParent::SendRawMessage(
  40     const JSActorMessageMeta& aMeta, Maybe<ipc::StructuredCloneData>&& aData,
  41     Maybe<ipc::StructuredCloneData>&& aStack, ErrorResult& aRv) {
  42   if (NS_WARN_IF(!CanSend() || !mManager || !mManager->CanSend())) {
  43     aRv.ThrowInvalidStateError("JSWindowActorParent cannot send at the moment");
  44     return;
  45   }
  46
  47   if (mManager->IsInProcess()) {
  48     SendRawMessageInProcess(
  49         aMeta, std::move(aData), std::move(aStack),
  50         [manager{mManager}]() { return manager->GetChildActor(); });
  51     return;
  52   }
  53
  54   Maybe<ClonedMessageData> msgData;
  55   if (aData) {
  56     msgData.emplace();
  57     if (NS_WARN_IF(!aData->BuildClonedMessageData(*msgData))) {
  58       aRv.ThrowDataCloneError(
  59           nsPrintfCString("JSWindowActorParent serialization error: cannot "
  60                           "clone, in actor '%s'",
  61                           PromiseFlatCString(aMeta.actorName()).get()));
  62       return;
  63     }
  64   }
  65
  66   Maybe<ClonedMessageData> stackData;
  67   if (aStack) {
  68     stackData.emplace();
  69     if (!aStack->BuildClonedMessageData(*stackData)) {
  70       stackData.reset();
  71     }
  72   }
  73
  74   if (NS_WARN_IF(!mManager->SendRawMessage(aMeta, msgData, stackData))) {
  75     aRv.ThrowOperationError(
  76         nsPrintfCString("JSWindowActorParent send error in actor '%s'",
  77                         PromiseFlatCString(aMeta.actorName()).get()));
  78     return;
  79   }
  80 }
  81
  82 CanonicalBrowsingContext* JSWindowActorParent::GetBrowsingContext(
  83     ErrorResult& aRv) {
  84   if (!mManager) {
  85     aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
  86     return nullptr;
  87   }
  88
  89   return mManager->BrowsingContext();
  90 }
  91
  92 void JSWindowActorParent::ClearManager() { mManager = nullptr; }
  93
  94 NS_IMPL_CYCLE_COLLECTION_INHERITED(JSWindowActorParent, JSActor, mManager)
  95
  96 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSWindowActorParent)
  97 NS_INTERFACE_MAP_END_INHERITING(JSActor)
  98
  99 NS_IMPL_ADDREF_INHERITED(JSWindowActorParent, JSActor)
 100 NS_IMPL_RELEASE_INHERITED(JSWindowActorParent, JSActor)
 101
 102 }  // namespace mozilla::dom