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-rw-r--r--dom/base/InProcessBrowserChildMessageManager.h129
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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/. */
+
+#ifndef nsInProcessBrowserChildGlobal_h
+#define nsInProcessBrowserChildGlobal_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/ContentFrameMessageManager.h"
+#include "mozilla/dom/MessageManagerCallback.h"
+#include "nsCOMPtr.h"
+#include "nsIScriptContext.h"
+#include "nsIScriptObjectPrincipal.h"
+#include "nsDocShell.h"
+#include "nsCOMArray.h"
+#include "nsWeakReference.h"
+
+class nsFrameMessageManager;
+
+namespace mozilla {
+class EventChainPreVisitor;
+
+namespace dom {
+
+/**
+ * This class implements a ContentFrameMessageManager for use by frame loaders
+ * in the parent process. It is bound to a DocShell rather than a BrowserChild,
+ * and does not use any IPC infrastructure for its message passing.
+ */
+
+class InProcessBrowserChildMessageManager final
+ : public ContentFrameMessageManager,
+ public nsMessageManagerScriptExecutor,
+ public nsIInProcessContentFrameMessageManager,
+ public nsSupportsWeakReference,
+ public mozilla::dom::ipc::MessageManagerCallback {
+ using StructuredCloneData = mozilla::dom::ipc::StructuredCloneData;
+
+ private:
+ InProcessBrowserChildMessageManager(nsDocShell* aShell, nsIContent* aOwner,
+ nsFrameMessageManager* aChrome);
+
+ public:
+ static already_AddRefed<InProcessBrowserChildMessageManager> Create(
+ nsDocShell* aShell, nsIContent* aOwner, nsFrameMessageManager* aChrome);
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(
+ InProcessBrowserChildMessageManager, DOMEventTargetHelper)
+
+ void MarkForCC();
+
+ virtual JSObject* WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) override;
+
+ Nullable<WindowProxyHolder> GetContent(ErrorResult& aError) override;
+ virtual already_AddRefed<nsIDocShell> GetDocShell(
+ ErrorResult& aError) override {
+ return do_AddRef(mDocShell);
+ }
+ virtual already_AddRefed<nsIEventTarget> GetTabEventTarget() override;
+
+ NS_FORWARD_SAFE_NSIMESSAGESENDER(mMessageManager)
+
+ NS_DECL_NSIINPROCESSCONTENTFRAMEMESSAGEMANAGER
+
+ void CacheFrameLoader(nsFrameLoader* aFrameLoader);
+
+ /**
+ * MessageManagerCallback methods that we override.
+ */
+ virtual bool DoSendBlockingMessage(
+ const nsAString& aMessage, StructuredCloneData& aData,
+ nsTArray<StructuredCloneData>* aRetVal) override;
+ virtual nsresult DoSendAsyncMessage(const nsAString& aMessage,
+ StructuredCloneData& aData) override;
+
+ void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
+
+ void LoadFrameScript(const nsAString& aURL, bool aRunInGlobalScope);
+ void FireUnloadEvent();
+ void DisconnectEventListeners();
+ void Disconnect();
+ void SendMessageToParent(const nsString& aMessage, bool aSync,
+ const nsString& aJSON,
+ nsTArray<nsString>* aJSONRetVal);
+ nsFrameMessageManager* GetInnerManager() {
+ return static_cast<nsFrameMessageManager*>(mMessageManager.get());
+ }
+
+ void SetOwner(nsIContent* aOwner) { mOwner = aOwner; }
+ nsFrameMessageManager* GetChromeMessageManager() {
+ return mChromeMessageManager;
+ }
+ void SetChromeMessageManager(nsFrameMessageManager* aParent) {
+ mChromeMessageManager = aParent;
+ }
+
+ already_AddRefed<nsFrameLoader> GetFrameLoader();
+
+ protected:
+ virtual ~InProcessBrowserChildMessageManager();
+
+ RefPtr<nsDocShell> mDocShell;
+ bool mLoadingScript;
+
+ // Is this the message manager for an in-process <iframe mozbrowser>? This
+ // affects where events get sent, so it affects GetEventTargetParent.
+ bool mIsBrowserFrame;
+ bool mPreventEventsEscaping;
+
+ // We keep a strong reference to the frameloader after we've started
+ // teardown. This allows us to dispatch message manager messages during this
+ // time.
+ RefPtr<nsFrameLoader> mFrameLoader;
+
+ public:
+ nsIContent* mOwner;
+ nsFrameMessageManager* mChromeMessageManager;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif