/* -*- 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/. */ #ifndef mozilla_dom_ContentProcessMessageManager_h #define mozilla_dom_ContentProcessMessageManager_h #include "mozilla/Attributes.h" #include "mozilla/dom/MessageManagerGlobal.h" #include "mozilla/dom/MessageManagerCallback.h" #include "nsCOMPtr.h" #include "nsIScriptContext.h" #include "nsServiceManagerUtils.h" #include "nsWeakReference.h" #include "nsWrapperCache.h" #include "xpcpublic.h" class nsFrameMessageManager; namespace mozilla::dom { namespace ipc { class SharedMap; } /** * This class implements a singleton process message manager for content * processes. Each child process has exactly one instance of this class, which * hosts the process's process scripts, and may exchange messages with its * corresponding ParentProcessMessageManager on the parent side. */ class ContentProcessMessageManager : public nsIMessageSender, public nsMessageManagerScriptExecutor, public nsSupportsWeakReference, public ipc::MessageManagerCallback, public MessageManagerGlobal, public nsWrapperCache { public: explicit ContentProcessMessageManager(nsFrameMessageManager* aMessageManager); using ipc::MessageManagerCallback::GetProcessMessageManager; using MessageManagerGlobal::GetProcessMessageManager; bool Init(); static ContentProcessMessageManager* Get(); static bool WasCreated(); NS_DECL_CYCLE_COLLECTING_ISUPPORTS NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS( ContentProcessMessageManager, nsIMessageSender) void MarkForCC(); virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override; JSObject* GetOrCreateWrapper(); using MessageManagerGlobal::AddMessageListener; using MessageManagerGlobal::AddWeakMessageListener; using MessageManagerGlobal::RemoveMessageListener; using MessageManagerGlobal::RemoveWeakMessageListener; // ContentProcessMessageManager void GetInitialProcessData(JSContext* aCx, JS::MutableHandle<JS::Value> aInitialProcessData, ErrorResult& aError) { if (!mMessageManager) { aError.Throw(NS_ERROR_NOT_INITIALIZED); return; } mMessageManager->GetInitialProcessData(aCx, aInitialProcessData, aError); } already_AddRefed<ipc::SharedMap> GetSharedData(); NS_FORWARD_SAFE_NSIMESSAGESENDER(mMessageManager) nsIGlobalObject* GetParentObject() const { return xpc::NativeGlobal(xpc::PrivilegedJunkScope()); } virtual void LoadScript(const nsAString& aURL); bool IsProcessScoped() const override { return true; } void SetInitialProcessData(JS::Handle<JS::Value> aInitialData); protected: virtual ~ContentProcessMessageManager(); private: bool mInitialized; static bool sWasCreated; }; } // namespace mozilla::dom #endif // mozilla_dom_ContentProcessMessageManager_h