dom/html/HTMLMapElement.cpp
author Nathan Froyd <froydnj@mozilla.com>
Fri, 21 Sep 2018 16:45:49 -0400
changeset 496222 a14c288aec85e9e772dbb5e118a16c16cb95cc83
parent 481599 a97feb8161b7a4c60a539d83cb702a6e50fab1b1
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1492894 - part 1 - make the node hierarchy consistently constructed with NodeInfo&&; r=mccr8 Various places in dom/ use the pattern: already_AddRefed<NodeInfo> ni = ...; which is supposed to be disallowed by our static analysis code, but isn't, for whatever reason. To fix our static analysis code, we need to eliminate instances of the above pattern. Unfortunately, eliminating this pattern requires restructuring how Nodes are created. Most Node subclasses take `already_AddRefed<NodeInfo>&` in their constructors, and a few accept `already_AddRefed<NodeInfo>&&`. We need to enforce the latter pattern consistently, which requires changing dozens of source files.

/* -*- 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/. */

#include "mozilla/dom/HTMLMapElement.h"
#include "mozilla/dom/HTMLMapElementBinding.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsContentList.h"
#include "nsCOMPtr.h"

NS_IMPL_NS_NEW_HTML_ELEMENT(Map)

namespace mozilla {
namespace dom {

HTMLMapElement::HTMLMapElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  : nsGenericHTMLElement(std::move(aNodeInfo))
{
}

NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLMapElement)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLMapElement,
                                                  nsGenericHTMLElement)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAreas)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(HTMLMapElement,
                                               nsGenericHTMLElement)

NS_IMPL_ELEMENT_CLONE(HTMLMapElement)


nsIHTMLCollection*
HTMLMapElement::Areas()
{
  if (!mAreas) {
    // Not using NS_GetContentList because this should not be cached
    mAreas = new nsContentList(this,
                               kNameSpaceID_XHTML,
                               nsGkAtoms::area,
                               nsGkAtoms::area,
                               false);
  }

  return mAreas;
}


JSObject*
HTMLMapElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
  return HTMLMapElement_Binding::Wrap(aCx, this, aGivenProto);
}

} // namespace dom
} // namespace mozilla