dom/html/HTMLTemplateElement.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/HTMLTemplateElement.h"
   8 #include "mozilla/dom/HTMLTemplateElementBinding.h"
   9
  10 #include "mozilla/MappedDeclarations.h"
  11 #include "nsGkAtoms.h"
  12 #include "nsStyleConsts.h"
  13 #include "nsAtom.h"
  14
  15 NS_IMPL_NS_NEW_HTML_ELEMENT(Template)
  16
  17 namespace mozilla {
  18 namespace dom {
  19
  20 HTMLTemplateElement::HTMLTemplateElement(
  21     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  22     : nsGenericHTMLElement(std::move(aNodeInfo)) {
  23   SetHasWeirdParserInsertionMode();
  24
  25   Document* contentsOwner = OwnerDoc()->GetTemplateContentsOwner();
  26   if (!contentsOwner) {
  27     MOZ_CRASH("There should always be a template contents owner.");
  28   }
  29
  30   mContent = contentsOwner->CreateDocumentFragment();
  31   mContent->SetHost(this);
  32 }
  33
  34 HTMLTemplateElement::~HTMLTemplateElement() {
  35   if (mContent) {
  36     mContent->SetHost(nullptr);
  37   }
  38 }
  39
  40 NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(HTMLTemplateElement,
  41                                                nsGenericHTMLElement)
  42
  43 NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLTemplateElement)
  44
  45 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLTemplateElement,
  46                                                 nsGenericHTMLElement)
  47   if (tmp->mContent) {
  48     tmp->mContent->SetHost(nullptr);
  49     tmp->mContent = nullptr;
  50   }
  51 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
  52
  53 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLTemplateElement,
  54                                                   nsGenericHTMLElement)
  55   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContent)
  56 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
  57
  58 NS_IMPL_ELEMENT_CLONE(HTMLTemplateElement)
  59
  60 JSObject* HTMLTemplateElement::WrapNode(JSContext* aCx,
  61                                         JS::Handle<JSObject*> aGivenProto) {
  62   return HTMLTemplateElement_Binding::Wrap(aCx, this, aGivenProto);
  63 }
  64
  65 }  // namespace dom
  66 }  // namespace mozilla