gecko-dev/dom/broadcastchannel/BroadcastChannelParent.cpp

121 строка
3.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "BroadcastChannelParent.h"
#include "BroadcastChannelService.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/ipc/BlobParent.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "mozilla/unused.h"
namespace mozilla {
using namespace ipc;
namespace dom {
BroadcastChannelParent::BroadcastChannelParent(
const nsAString& aOrigin,
const nsAString& aChannel,
bool aPrivateBrowsing)
: mService(BroadcastChannelService::GetOrCreate())
, mOrigin(aOrigin)
, mChannel(aChannel)
, mPrivateBrowsing(aPrivateBrowsing)
{
AssertIsOnBackgroundThread();
mService->RegisterActor(this);
}
BroadcastChannelParent::~BroadcastChannelParent()
{
AssertIsOnBackgroundThread();
}
bool
BroadcastChannelParent::RecvPostMessage(const ClonedMessageData& aData)
{
AssertIsOnBackgroundThread();
if (NS_WARN_IF(!mService)) {
return false;
}
mService->PostMessage(this, aData, mOrigin, mChannel, mPrivateBrowsing);
return true;
}
bool
BroadcastChannelParent::RecvClose()
{
AssertIsOnBackgroundThread();
if (NS_WARN_IF(!mService)) {
return false;
}
mService->UnregisterActor(this);
mService = nullptr;
unused << Send__delete__(this);
return true;
}
void
BroadcastChannelParent::ActorDestroy(ActorDestroyReason aWhy)
{
AssertIsOnBackgroundThread();
if (mService) {
// This object is about to be released and with it, also mService will be
// released too.
mService->UnregisterActor(this);
}
}
void
BroadcastChannelParent::CheckAndDeliver(const ClonedMessageData& aData,
const nsString& aOrigin,
const nsString& aChannel,
bool aPrivateBrowsing)
{
AssertIsOnBackgroundThread();
if (aOrigin == mOrigin &&
aChannel == mChannel &&
aPrivateBrowsing == mPrivateBrowsing) {
// We need to duplicate data only if we have blobs or if the manager of
// them is different than the manager of this parent actor.
if (aData.blobsParent().IsEmpty() ||
static_cast<BlobParent*>(aData.blobsParent()[0])->GetBackgroundManager() == Manager()) {
unused << SendNotify(aData);
return;
}
// Duplicate the data for this parent.
ClonedMessageData newData(aData);
// Ricreate the BlobParent for this new message.
for (uint32_t i = 0, len = newData.blobsParent().Length(); i < len; ++i) {
nsRefPtr<FileImpl> impl =
static_cast<BlobParent*>(newData.blobsParent()[i])->GetBlobImpl();
PBlobParent* blobParent =
BackgroundParent::GetOrCreateActorForBlobImpl(Manager(), impl);
if (!blobParent) {
return;
}
newData.blobsParent()[i] = blobParent;
}
unused << SendNotify(newData);
}
}
} // dom namespace
} // mozilla namespace