dom/html/HTMLTemplateElement.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "mozilla/dom/HTMLTemplateElement.h"
   7 #include "mozilla/dom/HTMLTemplateElementBinding.h"
   8
   9 #include "nsGkAtoms.h"
  10 #include "nsStyleConsts.h"
  11 #include "nsIAtom.h"
  12 #include "nsRuleData.h"
  13
  14 NS_IMPL_NS_NEW_HTML_ELEMENT(Template)
  15
  16 namespace mozilla {
  17 namespace dom {
  18
  19 HTMLTemplateElement::HTMLTemplateElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
  20   : nsGenericHTMLElement(aNodeInfo)
  21 {
  22   SetHasWeirdParserInsertionMode();
  23
  24   nsIDocument* contentsOwner = OwnerDoc()->GetTemplateContentsOwner();
  25   if (!contentsOwner) {
  26     MOZ_CRASH("There should always be a template contents owner.");
  27   }
  28
  29   mContent = contentsOwner->CreateDocumentFragment();
  30   mContent->SetHost(this);
  31 }
  32
  33 HTMLTemplateElement::~HTMLTemplateElement()
  34 {
  35   if (mContent) {
  36     mContent->SetHost(nullptr);
  37   }
  38 }
  39
  40 NS_IMPL_ADDREF_INHERITED(HTMLTemplateElement, Element)
  41 NS_IMPL_RELEASE_INHERITED(HTMLTemplateElement, Element)
  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 // QueryInterface implementation for HTMLTemplateElement
  59 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(HTMLTemplateElement)
  60 NS_INTERFACE_MAP_END_INHERITING(nsGenericHTMLElement)
  61
  62 NS_IMPL_ELEMENT_CLONE(HTMLTemplateElement)
  63
  64 JSObject*
  65 HTMLTemplateElement::WrapNode(JSContext *aCx)
  66 {
  67   return HTMLTemplateElementBinding::Wrap(aCx, this);
  68 }
  69
  70 } // namespace dom
  71 } // namespace mozilla
  72