mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "BroadcastChannelChild.h"
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#include "BroadcastChannel.h"
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#include "jsapi.h"
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#include "mozilla/dom/MessageEvent.h"
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#include "mozilla/dom/MessageEventBinding.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/ipc/PBackgroundChild.h"
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#include "WorkerPrivate.h"
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namespace mozilla {
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using namespace ipc;
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namespace dom {
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using namespace workers;
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BroadcastChannelChild::BroadcastChannelChild(const nsAString& aOrigin,
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const nsAString& aChannel)
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: mOrigin(aOrigin)
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, mChannel(aChannel)
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, mActorDestroyed(false)
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{
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}
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BroadcastChannelChild::~BroadcastChannelChild()
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{
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MOZ_ASSERT(!mBC);
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}
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bool
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BroadcastChannelChild::RecvNotify(const nsString& aMessage)
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{
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nsCOMPtr<DOMEventTargetHelper> helper = mBC;
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nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(helper);
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// This object is going to be deleted soon. No notify is required.
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if (!eventTarget) {
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return true;
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}
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// CheckInnerWindowCorrectness can be used also without a window when
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// BroadcastChannel is running in a worker. In this case, it's a NOP.
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if (NS_FAILED(mBC->CheckInnerWindowCorrectness())) {
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return true;
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}
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if (NS_IsMainThread()) {
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AutoJSAPI autoJS;
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if (!autoJS.Init(mBC->GetParentObject())) {
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NS_WARNING("Dropping message");
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return true;
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}
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Notify(autoJS.cx(), aMessage);
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return true;
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}
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WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
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MOZ_ASSERT(workerPrivate);
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Notify(workerPrivate->GetJSContext(), aMessage);
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return true;
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}
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void
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BroadcastChannelChild::Notify(JSContext* aCx, const nsString& aMessage)
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{
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JS::Rooted<JSString*> str(aCx,
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JS_NewUCStringCopyN(aCx, aMessage.get(),
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aMessage.Length()));
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if (!str) {
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// OOM, no exception needed.
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NS_WARNING("Failed allocating a JS string. Probably OOM.");
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return;
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}
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JS::Rooted<JS::Value> value(aCx, JS::StringValue(str));
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RootedDictionary<MessageEventInit> init(aCx);
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init.mBubbles = false;
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init.mCancelable = false;
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init.mOrigin.Construct(mOrigin);
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init.mData = value;
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ErrorResult rv;
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nsRefPtr<MessageEvent> event =
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MessageEvent::Constructor(mBC, NS_LITERAL_STRING("message"), init, rv);
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if (rv.Failed()) {
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NS_WARNING("Failed to create a MessageEvent object.");
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return;
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}
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event->SetTrusted(true);
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bool status;
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mBC->DispatchEvent(static_cast<Event*>(event.get()), &status);
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}
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void
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BroadcastChannelChild::ActorDestroy(ActorDestroyReason aWhy)
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{
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mActorDestroyed = true;
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}
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} // dom namespace
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} // mozilla namespace
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