dom/base/MessageChannel.cpp@b8a032363ba2 (annotated)
dom/base/MessageChannel.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "MessageChannel.h" |
| michael@0 | 7 | #include "mozilla/Preferences.h" |
| michael@0 | 8 | #include "mozilla/dom/MessageChannelBinding.h" |
| michael@0 | 9 | #include "mozilla/dom/MessagePort.h" |
| michael@0 | 10 | #include "nsContentUtils.h" |
| michael@0 | 11 | #include "nsPIDOMWindow.h" |
| michael@0 | 12 | |
| michael@0 | 13 | namespace mozilla { |
| michael@0 | 14 | namespace dom { |
| michael@0 | 15 | |
| michael@0 | 16 | NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_3(MessageChannel, mWindow, mPort1, mPort2) |
| michael@0 | 17 | NS_IMPL_CYCLE_COLLECTING_ADDREF(MessageChannel) |
| michael@0 | 18 | NS_IMPL_CYCLE_COLLECTING_RELEASE(MessageChannel) |
| michael@0 | 19 | |
| michael@0 | 20 | NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MessageChannel) |
| michael@0 | 21 | NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY |
| michael@0 | 22 | NS_INTERFACE_MAP_ENTRY(nsISupports) |
| michael@0 | 23 | NS_INTERFACE_MAP_END |
| michael@0 | 24 | |
| michael@0 | 25 | namespace { |
| michael@0 | 26 | bool gPrefInitialized = false; |
| michael@0 | 27 | bool gPrefEnabled = false; |
| michael@0 | 28 | |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | |
| michael@0 | 32 | /* static */ bool |
| michael@0 | 33 | MessageChannel::PrefEnabled() |
| michael@0 | 34 | { |
| michael@0 | 35 | if (!gPrefInitialized) { |
| michael@0 | 36 | Preferences::AddBoolVarCache(&gPrefEnabled, "dom.messageChannel.enabled"); |
| michael@0 | 37 | gPrefInitialized = true; |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | return gPrefEnabled; |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | MessageChannel::MessageChannel(nsPIDOMWindow* aWindow) |
| michael@0 | 44 | : mWindow(aWindow) |
| michael@0 | 45 | { |
| michael@0 | 46 | MOZ_COUNT_CTOR(MessageChannel); |
| michael@0 | 47 | SetIsDOMBinding(); |
| michael@0 | 48 | |
| michael@0 | 49 | mPort1 = new MessagePort(mWindow); |
| michael@0 | 50 | mPort2 = new MessagePort(mWindow); |
| michael@0 | 51 | |
| michael@0 | 52 | mPort1->Entangle(mPort2); |
| michael@0 | 53 | mPort2->Entangle(mPort1); |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | MessageChannel::~MessageChannel() |
| michael@0 | 57 | { |
| michael@0 | 58 | MOZ_COUNT_DTOR(MessageChannel); |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | JSObject* |
| michael@0 | 62 | MessageChannel::WrapObject(JSContext* aCx) |
| michael@0 | 63 | { |
| michael@0 | 64 | return MessageChannelBinding::Wrap(aCx, this); |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | /* static */ already_AddRefed<MessageChannel> |
| michael@0 | 68 | MessageChannel::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv) |
| michael@0 | 69 | { |
| michael@0 | 70 | nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports()); |
| michael@0 | 71 | if (!window) { |
| michael@0 | 72 | aRv.Throw(NS_ERROR_UNEXPECTED); |
| michael@0 | 73 | return nullptr; |
| michael@0 | 74 | } |
| michael@0 | 75 | |
| michael@0 | 76 | nsRefPtr<MessageChannel> channel = new MessageChannel(window); |
| michael@0 | 77 | return channel.forget(); |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | } // namespace dom |
| michael@0 | 81 | } // namespace mozilla |
