AnonymousContent.cpp

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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/. */

#include "AnonymousContent.h"

#include "mozilla/dom/Document.h"

#include "mozilla/dom/Element.h"

#include "mozilla/dom/ShadowRoot.h"

#include "mozilla/dom/AnonymousContentBinding.h"

#include "nsCycleCollectionParticipant.h"

namespace mozilla::dom {

// Ref counting and cycle collection

NS_IMPL_CYCLE_COLLECTION(AnonymousContent, mHost, mRoot)

already_AddRefed<AnonymousContent> AnonymousContent::Create(Document& aDoc) {

  RefPtr<Element> host = aDoc.CreateHTMLElement(nsGkAtoms::div);

  if (!host) {

    return nullptr;

  host->SetAttr(kNameSpaceID_None, nsGkAtoms::role, u"presentation"_ns, false);

  host->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,

                u"anonymous-content-host"_ns, false);

  RefPtr<ShadowRoot> root = host->AttachShadowWithoutNameChecks(

      ShadowRootMode::Closed, Element::DelegatesFocus::No);

  root->SetIsUAWidget();

  return do_AddRef(new AnonymousContent(host.forget(), root.forget()));

AnonymousContent::AnonymousContent(already_AddRefed<Element> aHost,

                                   already_AddRefed<ShadowRoot> aRoot)

    : mHost(aHost), mRoot(aRoot) {

  MOZ_ASSERT(mHost);

  MOZ_ASSERT(mRoot);

AnonymousContent::~AnonymousContent() = default;

bool AnonymousContent::WrapObject(JSContext* aCx,

                                  JS::Handle<JSObject*> aGivenProto,

                                  JS::MutableHandle<JSObject*> aReflector) {

  return AnonymousContent_Binding::Wrap(aCx, this, aGivenProto, aReflector);

}  // namespace mozilla::dom