tor-browser

The Tor Browser
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HTMLPictureElement.cpp (3316B)

      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/HTMLPictureElement.h"
      8 
      9 #include "mozilla/dom/HTMLImageElement.h"
     10 #include "mozilla/dom/HTMLPictureElementBinding.h"
     11 #include "mozilla/dom/HTMLSourceElement.h"
     12 
     13 // Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Picture) to add pref check.
     14 nsGenericHTMLElement* NS_NewHTMLPictureElement(
     15    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
     16    mozilla::dom::FromParser aFromParser) {
     17  RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
     18  auto* nim = nodeInfo->NodeInfoManager();
     19  return new (nim) mozilla::dom::HTMLPictureElement(nodeInfo.forget());
     20 }
     21 
     22 namespace mozilla::dom {
     23 
     24 HTMLPictureElement::HTMLPictureElement(
     25    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
     26    : nsGenericHTMLElement(std::move(aNodeInfo)) {}
     27 
     28 HTMLPictureElement::~HTMLPictureElement() = default;
     29 
     30 NS_IMPL_ELEMENT_CLONE(HTMLPictureElement)
     31 
     32 void HTMLPictureElement::RemoveChildNode(
     33    nsIContent* aKid, bool aNotify, const BatchRemovalState* aState,
     34    nsINode* aNewParent, MutationEffectOnScript aMutationEffectOnScript) {
     35  MOZ_ASSERT(aKid);
     36 
     37  if (auto* img = HTMLImageElement::FromNode(aKid)) {
     38    img->PictureSourceRemoved(aNotify);
     39  } else if (auto* source = HTMLSourceElement::FromNode(aKid)) {
     40    // Find all img siblings after this <source> to notify them of its demise
     41    nsCOMPtr<nsIContent> nextSibling = source->GetNextSibling();
     42    if (nextSibling && nextSibling->GetParentNode() == this) {
     43      do {
     44        if (auto* img = HTMLImageElement::FromNode(nextSibling)) {
     45          img->PictureSourceRemoved(aNotify, source);
     46        }
     47      } while ((nextSibling = nextSibling->GetNextSibling()));
     48    }
     49  }
     50 
     51  nsGenericHTMLElement::RemoveChildNode(aKid, aNotify, aState, aNewParent,
     52                                        aMutationEffectOnScript);
     53 }
     54 
     55 void HTMLPictureElement::InsertChildBefore(
     56    nsIContent* aKid, nsIContent* aBeforeThis, bool aNotify, ErrorResult& aRv,
     57    nsINode* aOldParent, MutationEffectOnScript aMutationEffectOnScript) {
     58  nsGenericHTMLElement::InsertChildBefore(aKid, aBeforeThis, aNotify, aRv,
     59                                          aOldParent, aMutationEffectOnScript);
     60  if (aRv.Failed() || !aKid) {
     61    return;
     62  }
     63 
     64  if (auto* img = HTMLImageElement::FromNode(aKid)) {
     65    img->PictureSourceAdded(aNotify);
     66  } else if (auto* source = HTMLSourceElement::FromNode(aKid)) {
     67    // Find all img siblings after this <source> to notify them of its insertion
     68    nsCOMPtr<nsIContent> nextSibling = source->GetNextSibling();
     69    if (nextSibling && nextSibling->GetParentNode() == this) {
     70      do {
     71        if (auto* img = HTMLImageElement::FromNode(nextSibling)) {
     72          img->PictureSourceAdded(aNotify, source);
     73        }
     74      } while ((nextSibling = nextSibling->GetNextSibling()));
     75    }
     76  }
     77 }
     78 
     79 JSObject* HTMLPictureElement::WrapNode(JSContext* aCx,
     80                                       JS::Handle<JSObject*> aGivenProto) {
     81  return HTMLPictureElement_Binding::Wrap(aCx, this, aGivenProto);
     82 }
     83 
     84 }  // namespace mozilla::dom