author Nika Layzell <>
Wed, 16 Sep 2020 20:47:55 +0000
changeset 549331 ab7d302fd3186b10ada9264528c80f6840e44571
parent 528741 cb99aaea43652f6dd6f6579d648445e2d133e453
permissions -rw-r--r--
Bug 1659696 - Check PendingInitialization before targeting in, r=kmag This requires adding the flag as a synced field on the BrowsingContext, and checking it in a few more places. Attempts to open a new window in this racy manner will now raise an exception. This should avoid the issue from bug 1658854 by blocking the buggy attempts to load before the nested event loop has been exited. Differential Revision:

/* -*- 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 */

#ifndef LoadContext_h
#define LoadContext_h

#include "SerializedLoadContext.h"
#include "mozilla/Attributes.h"
#include "mozilla/BasePrincipal.h"
#include "nsIWeakReferenceUtils.h"
#include "mozilla/dom/Element.h"
#include "nsIInterfaceRequestor.h"
#include "nsILoadContext.h"

namespace mozilla {

 * Class that provides nsILoadContext info in Parent process.  Typically copied
 * from Child via SerializedLoadContext.
 * Note: this is not the "normal" or "original" nsILoadContext.  That is
 * typically provided by BrowsingContext.  This is only used when the original
 * docshell is in a different process and we need to copy certain values from
 * it.

class LoadContext final : public nsILoadContext, public nsIInterfaceRequestor {

  LoadContext(const IPC::SerializedLoadContext& aToCopy,
              dom::Element* aTopFrameElement, OriginAttributes& aAttrs);

  // Constructor taking reserved origin attributes.
  explicit LoadContext(OriginAttributes& aAttrs);

  // Constructor for creating a LoadContext with a given browser flag.
  explicit LoadContext(nsIPrincipal* aPrincipal,
                       nsILoadContext* aOptionalBase = nullptr);


  nsWeakPtr mTopFrameElement;
  bool mIsContent;
  bool mUseRemoteTabs;
  bool mUseRemoteSubframes;
  bool mUseTrackingProtection;
#ifdef DEBUG
  bool mIsNotNull;
  OriginAttributes mOriginAttributes;

already_AddRefed<nsILoadContext> CreateLoadContext();
already_AddRefed<nsILoadContext> CreatePrivateLoadContext();

}  // namespace mozilla

#endif  // LoadContext_h