dom/fetch/ChannelInfo.h
author Noemi Erli <nerli@mozilla.com>
Thu, 24 May 2018 18:30:36 +0300
changeset 476428 fae06a27c30119754a4522f9ec21d254d34cfc80
parent 300805 682855bb92e7beb76a217ec2bde61cfc4f8b0628
child 297987 83e1183fff6645e0b706fd7bfe0b1f36f5e108ea
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Backed out changeset c19f0dedfb15 (bug 1463794) for reftest failures in build/tests/reftest/tests/layout/reftests/w3c-css/submitted/shapes1/shape-outside-circle-056.html on a CLOSED TREE

/* -*- 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_ChannelInfo_h
#define mozilla_dom_ChannelInfo_h

#include "nsString.h"
#include "nsCOMPtr.h"

class nsIChannel;
class nsIDocument;
class nsIGlobalObject;
class nsIURI;

namespace mozilla {
namespace ipc {
class IPCChannelInfo;
} // namespace ipc

namespace dom {

// This class represents the information related to a Response that we
// retrieve from the corresponding channel that is used to perform the fetch.
//
// When adding new members to this object, the following code needs to be
// updated:
// * IPCChannelInfo
// * InitFromChannel and InitFromIPCChannelInfo members
// * ResurrectInfoOnChannel member
// * AsIPCChannelInfo member
// * constructors and assignment operators for this class.
// * DOM Cache schema code (in dom/cache/DBSchema.cpp) to ensure that the newly
//   added member is saved into the DB and loaded from it properly.
//
// Care must be taken when initializing this object, or when calling
// ResurrectInfoOnChannel().  This object cannot be initialized twice, and
// ResurrectInfoOnChannel() cannot be called on it before it has been
// initialized.  There are assertions ensuring these invariants.
class ChannelInfo final
{
public:
  typedef mozilla::ipc::IPCChannelInfo IPCChannelInfo;

  ChannelInfo()
    : mInited(false)
  {
  }

  ChannelInfo(const ChannelInfo& aRHS)
    : mSecurityInfo(aRHS.mSecurityInfo)
    , mInited(aRHS.mInited)
  {
  }

  ChannelInfo&
  operator=(const ChannelInfo& aRHS)
  {
    mSecurityInfo = aRHS.mSecurityInfo;
    mInited = aRHS.mInited;
    return *this;
  }

  void InitFromDocument(nsIDocument* aDoc);
  void InitFromChannel(nsIChannel* aChannel);
  void InitFromChromeGlobal(nsIGlobalObject* aGlobal);
  void InitFromIPCChannelInfo(const IPCChannelInfo& aChannelInfo);

  // This restores every possible information stored from a previous channel
  // object on a new one.
  nsresult ResurrectInfoOnChannel(nsIChannel* aChannel);

  bool IsInitialized() const
  {
    return mInited;
  }

  IPCChannelInfo AsIPCChannelInfo() const;

private:
  void SetSecurityInfo(nsISupports* aSecurityInfo);

private:
  nsCString mSecurityInfo;
  bool mInited;
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_ChannelInfo_h