1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/base/MessageChannel.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,81 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "MessageChannel.h"
1.10 +#include "mozilla/Preferences.h"
1.11 +#include "mozilla/dom/MessageChannelBinding.h"
1.12 +#include "mozilla/dom/MessagePort.h"
1.13 +#include "nsContentUtils.h"
1.14 +#include "nsPIDOMWindow.h"
1.15 +
1.16 +namespace mozilla {
1.17 +namespace dom {
1.18 +
1.19 +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_3(MessageChannel, mWindow, mPort1, mPort2)
1.20 +NS_IMPL_CYCLE_COLLECTING_ADDREF(MessageChannel)
1.21 +NS_IMPL_CYCLE_COLLECTING_RELEASE(MessageChannel)
1.22 +
1.23 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MessageChannel)
1.24 + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
1.25 + NS_INTERFACE_MAP_ENTRY(nsISupports)
1.26 +NS_INTERFACE_MAP_END
1.27 +
1.28 +namespace {
1.29 + bool gPrefInitialized = false;
1.30 + bool gPrefEnabled = false;
1.31 +
1.32 +}
1.33 +
1.34 +
1.35 +/* static */ bool
1.36 +MessageChannel::PrefEnabled()
1.37 +{
1.38 + if (!gPrefInitialized) {
1.39 + Preferences::AddBoolVarCache(&gPrefEnabled, "dom.messageChannel.enabled");
1.40 + gPrefInitialized = true;
1.41 + }
1.42 +
1.43 + return gPrefEnabled;
1.44 +}
1.45 +
1.46 +MessageChannel::MessageChannel(nsPIDOMWindow* aWindow)
1.47 + : mWindow(aWindow)
1.48 +{
1.49 + MOZ_COUNT_CTOR(MessageChannel);
1.50 + SetIsDOMBinding();
1.51 +
1.52 + mPort1 = new MessagePort(mWindow);
1.53 + mPort2 = new MessagePort(mWindow);
1.54 +
1.55 + mPort1->Entangle(mPort2);
1.56 + mPort2->Entangle(mPort1);
1.57 +}
1.58 +
1.59 +MessageChannel::~MessageChannel()
1.60 +{
1.61 + MOZ_COUNT_DTOR(MessageChannel);
1.62 +}
1.63 +
1.64 +JSObject*
1.65 +MessageChannel::WrapObject(JSContext* aCx)
1.66 +{
1.67 + return MessageChannelBinding::Wrap(aCx, this);
1.68 +}
1.69 +
1.70 +/* static */ already_AddRefed<MessageChannel>
1.71 +MessageChannel::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
1.72 +{
1.73 + nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
1.74 + if (!window) {
1.75 + aRv.Throw(NS_ERROR_UNEXPECTED);
1.76 + return nullptr;
1.77 + }
1.78 +
1.79 + nsRefPtr<MessageChannel> channel = new MessageChannel(window);
1.80 + return channel.forget();
1.81 +}
1.82 +
1.83 +} // namespace dom
1.84 +} // namespace mozilla
