зеркало из https://github.com/mozilla/gecko-dev.git
124 строки
3.9 KiB
C++
124 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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 "mozilla/dom/JSWindowActorBinding.h"
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#include "mozilla/dom/JSWindowActorParent.h"
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#include "mozilla/dom/WindowGlobalParent.h"
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#include "mozilla/dom/MessageManagerBinding.h"
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namespace mozilla {
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namespace dom {
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JSWindowActorParent::~JSWindowActorParent() { MOZ_ASSERT(!mManager); }
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JSObject* JSWindowActorParent::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return JSWindowActorParent_Binding::Wrap(aCx, this, aGivenProto);
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}
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WindowGlobalParent* JSWindowActorParent::GetManager() const { return mManager; }
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void JSWindowActorParent::Init(const nsAString& aName,
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WindowGlobalParent* aManager) {
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MOZ_ASSERT(!mManager, "Cannot Init() a JSWindowActorParent twice!");
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SetName(aName);
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mManager = aManager;
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}
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namespace {
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class AsyncMessageToChild : public Runnable {
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public:
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AsyncMessageToChild(const JSWindowActorMessageMeta& aMetadata,
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ipc::StructuredCloneData&& aData,
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WindowGlobalParent* aManager)
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: mozilla::Runnable("WindowGlobalChild::HandleAsyncMessage"),
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mMetadata(aMetadata),
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mData(std::move(aData)),
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mManager(aManager) {}
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NS_IMETHOD Run() override {
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MOZ_ASSERT(NS_IsMainThread(), "Should be called on the main thread.");
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RefPtr<WindowGlobalChild> child = mManager->GetChildActor();
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if (child) {
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child->ReceiveRawMessage(mMetadata, std::move(mData));
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}
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return NS_OK;
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}
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private:
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JSWindowActorMessageMeta mMetadata;
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ipc::StructuredCloneData mData;
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RefPtr<WindowGlobalParent> mManager;
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};
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} // anonymous namespace
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void JSWindowActorParent::SendRawMessage(const JSWindowActorMessageMeta& aMeta,
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ipc::StructuredCloneData&& aData,
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ErrorResult& aRv) {
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if (NS_WARN_IF(!mCanSend || !mManager || mManager->IsClosed())) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return;
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}
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if (mManager->IsInProcess()) {
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nsCOMPtr<nsIRunnable> runnable =
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new AsyncMessageToChild(aMeta, std::move(aData), mManager);
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NS_DispatchToMainThread(runnable.forget());
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return;
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}
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// Cross-process case - send data over WindowGlobalParent to other side.
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ClonedMessageData msgData;
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RefPtr<BrowserParent> browserParent = mManager->GetBrowserParent();
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ContentParent* cp = browserParent->Manager();
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if (NS_WARN_IF(!aData.BuildClonedMessageDataForParent(cp, msgData))) {
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aRv.Throw(NS_ERROR_DOM_DATA_CLONE_ERR);
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return;
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}
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if (NS_WARN_IF(!mManager->SendRawMessage(aMeta, msgData))) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return;
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}
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}
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CanonicalBrowsingContext* JSWindowActorParent::GetBrowsingContext(
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ErrorResult& aRv) {
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if (!mManager) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return nullptr;
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}
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return mManager->BrowsingContext();
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}
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void JSWindowActorParent::StartDestroy() {
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JSWindowActor::StartDestroy();
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mCanSend = false;
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}
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void JSWindowActorParent::AfterDestroy() {
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JSWindowActor::AfterDestroy();
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mManager = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(JSWindowActorParent, JSWindowActor, mManager)
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(JSWindowActorParent,
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JSWindowActor)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSWindowActorParent)
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NS_INTERFACE_MAP_END_INHERITING(JSWindowActor)
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NS_IMPL_ADDREF_INHERITED(JSWindowActorParent, JSWindowActor)
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NS_IMPL_RELEASE_INHERITED(JSWindowActorParent, JSWindowActor)
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} // namespace dom
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} // namespace mozilla
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