зеркало из https://github.com/mozilla/gecko-dev.git
114 строки
3.1 KiB
C++
114 строки
3.1 KiB
C++
/* -*- 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 "BroadcastChannelChild.h"
|
|
#include "BroadcastChannel.h"
|
|
#include "jsapi.h"
|
|
#include "mozilla/dom/File.h"
|
|
#include "mozilla/dom/MessageEvent.h"
|
|
#include "mozilla/dom/MessageEventBinding.h"
|
|
#include "mozilla/dom/WorkerPrivate.h"
|
|
#include "mozilla/dom/WorkerScope.h"
|
|
#include "mozilla/dom/ScriptSettings.h"
|
|
#include "mozilla/ipc/PBackgroundChild.h"
|
|
#include "mozilla/dom/ipc/StructuredCloneData.h"
|
|
|
|
namespace mozilla {
|
|
|
|
using namespace ipc;
|
|
|
|
namespace dom {
|
|
|
|
BroadcastChannelChild::BroadcastChannelChild(const nsACString& aOrigin)
|
|
: mBC(nullptr), mActorDestroyed(false) {
|
|
CopyUTF8toUTF16(aOrigin, mOrigin);
|
|
}
|
|
|
|
BroadcastChannelChild::~BroadcastChannelChild() { MOZ_ASSERT(!mBC); }
|
|
|
|
mozilla::ipc::IPCResult BroadcastChannelChild::RecvNotify(
|
|
const ClonedMessageData& aData) {
|
|
// Make sure to retrieve all blobs from the message before returning to avoid
|
|
// leaking their actors.
|
|
ipc::StructuredCloneDataNoTransfers cloneData;
|
|
cloneData.BorrowFromClonedMessageDataForBackgroundChild(aData);
|
|
|
|
nsCOMPtr<EventTarget> eventTarget = mBC;
|
|
|
|
// The object is going to be deleted soon. No notify is required.
|
|
if (!eventTarget) {
|
|
return IPC_OK();
|
|
}
|
|
|
|
if (NS_FAILED(mBC->CheckCurrentGlobalCorrectness())) {
|
|
return IPC_OK();
|
|
}
|
|
|
|
mBC->RemoveDocFromBFCache();
|
|
|
|
AutoJSAPI jsapi;
|
|
nsCOMPtr<nsIGlobalObject> globalObject;
|
|
|
|
if (NS_IsMainThread()) {
|
|
globalObject = mBC->GetParentObject();
|
|
} else {
|
|
WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
|
|
MOZ_ASSERT(workerPrivate);
|
|
globalObject = workerPrivate->GlobalScope();
|
|
}
|
|
|
|
if (!globalObject || !jsapi.Init(globalObject)) {
|
|
NS_WARNING("Failed to initialize AutoJSAPI object.");
|
|
return IPC_OK();
|
|
}
|
|
|
|
JSContext* cx = jsapi.cx();
|
|
JS::Rooted<JS::Value> value(cx, JS::NullValue());
|
|
if (cloneData.DataLength()) {
|
|
IgnoredErrorResult rv;
|
|
cloneData.Read(cx, &value, rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
DispatchError(cx);
|
|
return IPC_OK();
|
|
}
|
|
}
|
|
|
|
RootedDictionary<MessageEventInit> init(cx);
|
|
init.mBubbles = false;
|
|
init.mCancelable = false;
|
|
init.mOrigin = mOrigin;
|
|
init.mData = value;
|
|
|
|
RefPtr<MessageEvent> event =
|
|
MessageEvent::Constructor(mBC, NS_LITERAL_STRING("message"), init);
|
|
|
|
event->SetTrusted(true);
|
|
|
|
mBC->DispatchEvent(*event);
|
|
|
|
return IPC_OK();
|
|
}
|
|
|
|
void BroadcastChannelChild::ActorDestroy(ActorDestroyReason aWhy) {
|
|
mActorDestroyed = true;
|
|
}
|
|
|
|
void BroadcastChannelChild::DispatchError(JSContext* aCx) {
|
|
RootedDictionary<MessageEventInit> init(aCx);
|
|
init.mBubbles = false;
|
|
init.mCancelable = false;
|
|
init.mOrigin = mOrigin;
|
|
|
|
RefPtr<Event> event =
|
|
MessageEvent::Constructor(mBC, NS_LITERAL_STRING("messageerror"), init);
|
|
event->SetTrusted(true);
|
|
|
|
mBC->DispatchEvent(*event);
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|