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105 lines
3.3 KiB
C++
105 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_dom_ContentProcessMessageManager_h
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#define mozilla_dom_ContentProcessMessageManager_h
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/MessageManagerGlobal.h"
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#include "mozilla/dom/MessageManagerCallback.h"
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#include "nsCOMPtr.h"
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#include "nsIScriptContext.h"
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#include "nsServiceManagerUtils.h"
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#include "nsWeakReference.h"
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#include "nsWrapperCache.h"
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#include "xpcpublic.h"
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class nsFrameMessageManager;
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namespace mozilla::dom {
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namespace ipc {
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class SharedMap;
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}
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/**
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* This class implements a singleton process message manager for content
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* processes. Each child process has exactly one instance of this class, which
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* hosts the process's process scripts, and may exchange messages with its
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* corresponding ParentProcessMessageManager on the parent side.
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*/
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class ContentProcessMessageManager : public nsIMessageSender,
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public nsMessageManagerScriptExecutor,
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public nsSupportsWeakReference,
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public ipc::MessageManagerCallback,
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public MessageManagerGlobal,
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public nsWrapperCache {
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public:
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explicit ContentProcessMessageManager(nsFrameMessageManager* aMessageManager);
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using ipc::MessageManagerCallback::GetProcessMessageManager;
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using MessageManagerGlobal::GetProcessMessageManager;
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bool Init();
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static ContentProcessMessageManager* Get();
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static bool WasCreated();
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(
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ContentProcessMessageManager, nsIMessageSender)
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void MarkForCC();
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virtual JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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[[nodiscard]] JSObject* GetOrCreateWrapper();
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using MessageManagerGlobal::AddMessageListener;
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using MessageManagerGlobal::AddWeakMessageListener;
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using MessageManagerGlobal::RemoveMessageListener;
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using MessageManagerGlobal::RemoveWeakMessageListener;
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// ContentProcessMessageManager
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void GetInitialProcessData(JSContext* aCx,
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JS::MutableHandle<JS::Value> aInitialProcessData,
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ErrorResult& aError) {
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if (!mMessageManager) {
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aError.Throw(NS_ERROR_NOT_INITIALIZED);
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return;
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}
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mMessageManager->GetInitialProcessData(aCx, aInitialProcessData, aError);
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}
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already_AddRefed<ipc::SharedMap> GetSharedData();
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NS_FORWARD_SAFE_NSIMESSAGESENDER(mMessageManager)
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nsIGlobalObject* GetParentObject() const {
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return xpc::NativeGlobal(xpc::PrivilegedJunkScope());
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}
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[[nodiscard]] virtual bool LoadScript(const nsAString& aURL);
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bool IsProcessScoped() const override { return true; }
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void SetInitialProcessData(JS::Handle<JS::Value> aInitialData);
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protected:
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virtual ~ContentProcessMessageManager();
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private:
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bool mInitialized;
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static bool sWasCreated;
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};
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} // namespace mozilla::dom
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#endif // mozilla_dom_ContentProcessMessageManager_h
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