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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "ContentProcessMessageManager.h"
#include "nsContentCID.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/MessageManagerBinding.h"
#include "mozilla/dom/ParentProcessMessageManager.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/ipc/SharedMap.h"
#include "mozilla/HoldDropJSObjects.h"
using namespace mozilla;
using namespace mozilla::dom;
bool ContentProcessMessageManager::sWasCreated = false;
ContentProcessMessageManager::ContentProcessMessageManager(
nsFrameMessageManager* aMessageManager)
: MessageManagerGlobal(aMessageManager), mInitialized(false) {
mozilla::HoldJSObjects(this);
}
ContentProcessMessageManager::~ContentProcessMessageManager() {
mozilla::DropJSObjects(this);
}
ContentProcessMessageManager* ContentProcessMessageManager::Get() {
nsCOMPtr<nsIMessageSender> service =
do_GetService(NS_CHILDPROCESSMESSAGEMANAGER_CONTRACTID);
if (!service) {
return nullptr;
}
sWasCreated = true;
return static_cast<ContentProcessMessageManager*>(service.get());
}
already_AddRefed<mozilla::dom::ipc::SharedMap>
ContentProcessMessageManager::GetSharedData() {
if (ContentChild* child = ContentChild::GetSingleton()) {
return do_AddRef(child->SharedData());
}
auto* ppmm = nsFrameMessageManager::sParentProcessManager;
return do_AddRef(ppmm->SharedData()->GetReadOnly());
}
bool ContentProcessMessageManager::WasCreated() { return sWasCreated; }
void ContentProcessMessageManager::MarkForCC() {
MarkScopesForCC();
MessageManagerGlobal::MarkForCC();
}
NS_IMPL_CYCLE_COLLECTION_CLASS(ContentProcessMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ContentProcessMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ContentProcessMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
tmp->nsMessageManagerScriptExecutor::Trace(aCallbacks, aClosure);
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ContentProcessMessageManager)
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK(mMessageManager)
tmp->nsMessageManagerScriptExecutor::Unlink();
NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ContentProcessMessageManager)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIMessageSender)
NS_INTERFACE_MAP_ENTRY(nsIMessageSender)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(ContentProcessMessageManager)
NS_IMPL_CYCLE_COLLECTING_RELEASE(ContentProcessMessageManager)
bool ContentProcessMessageManager::Init() {
if (mInitialized) {
return true;
}
mInitialized = true;
return nsMessageManagerScriptExecutor::Init();
}
JSObject* ContentProcessMessageManager::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return ContentProcessMessageManager_Binding::Wrap(aCx, this, aGivenProto);
}
JSObject* ContentProcessMessageManager::GetOrCreateWrapper() {
JS::Rooted<JS::Value> val(RootingCx());
{
// Scope to run ~AutoJSAPI before working with a raw JSObject*.
AutoJSAPI jsapi;
jsapi.Init();
if (!GetOrCreateDOMReflectorNoWrap(jsapi.cx(), this, &val)) {
return nullptr;
}
}
MOZ_ASSERT(val.isObject());
return &val.toObject();
}
void ContentProcessMessageManager::LoadScript(const nsAString& aURL) {
Init();
JS::Rooted<JSObject*> messageManager(mozilla::dom::RootingCx(),
GetOrCreateWrapper());
LoadScriptInternal(messageManager, aURL, true);
}
void ContentProcessMessageManager::SetInitialProcessData(
JS::Handle<JS::Value> aInitialData) {
mMessageManager->SetInitialProcessData(aInitialData);
}
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