dom/html/HTMLPictureElement.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/HTMLPictureElement.h"
   8 #include "mozilla/dom/HTMLPictureElementBinding.h"
   9 #include "mozilla/dom/HTMLImageElement.h"
  10
  11 // Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Picture) to add pref check.
  12 nsGenericHTMLElement* NS_NewHTMLPictureElement(
  13     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
  14     mozilla::dom::FromParser aFromParser) {
  15   RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
  16   auto* nim = nodeInfo->NodeInfoManager();
  17   return new (nim) mozilla::dom::HTMLPictureElement(nodeInfo.forget());
  18 }
  19
  20 namespace mozilla {
  21 namespace dom {
  22
  23 HTMLPictureElement::HTMLPictureElement(
  24     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  25     : nsGenericHTMLElement(std::move(aNodeInfo)) {}
  26
  27 HTMLPictureElement::~HTMLPictureElement() = default;
  28
  29 NS_IMPL_ELEMENT_CLONE(HTMLPictureElement)
  30
  31 void HTMLPictureElement::RemoveChildNode(nsIContent* aKid, bool aNotify) {
  32   if (aKid && aKid->IsHTMLElement(nsGkAtoms::img)) {
  33     HTMLImageElement* img = HTMLImageElement::FromNode(aKid);
  34     if (img) {
  35       img->PictureSourceRemoved(aKid->AsContent());
  36     }
  37   } else if (aKid && aKid->IsHTMLElement(nsGkAtoms::source)) {
  38     // Find all img siblings after this <source> to notify them of its demise
  39     nsCOMPtr<nsIContent> nextSibling = aKid->GetNextSibling();
  40     if (nextSibling && nextSibling->GetParentNode() == this) {
  41       do {
  42         HTMLImageElement* img = HTMLImageElement::FromNode(nextSibling);
  43         if (img) {
  44           img->PictureSourceRemoved(aKid->AsContent());
  45         }
  46       } while ((nextSibling = nextSibling->GetNextSibling()));
  47     }
  48   }
  49
  50   nsGenericHTMLElement::RemoveChildNode(aKid, aNotify);
  51 }
  52
  53 nsresult HTMLPictureElement::InsertChildBefore(nsIContent* aKid,
  54                                                nsIContent* aBeforeThis,
  55                                                bool aNotify) {
  56   nsresult rv =
  57       nsGenericHTMLElement::InsertChildBefore(aKid, aBeforeThis, aNotify);
  58
  59   NS_ENSURE_SUCCESS(rv, rv);
  60   NS_ENSURE_TRUE(aKid, rv);
  61
  62   if (aKid->IsHTMLElement(nsGkAtoms::img)) {
  63     HTMLImageElement* img = HTMLImageElement::FromNode(aKid);
  64     if (img) {
  65       img->PictureSourceAdded(aKid->AsContent());
  66     }
  67   } else if (aKid->IsHTMLElement(nsGkAtoms::source)) {
  68     // Find all img siblings after this <source> to notify them of its insertion
  69     nsCOMPtr<nsIContent> nextSibling = aKid->GetNextSibling();
  70     if (nextSibling && nextSibling->GetParentNode() == this) {
  71       do {
  72         HTMLImageElement* img = HTMLImageElement::FromNode(nextSibling);
  73         if (img) {
  74           img->PictureSourceAdded(aKid->AsContent());
  75         }
  76       } while ((nextSibling = nextSibling->GetNextSibling()));
  77     }
  78   }
  79
  80   return rv;
  81 }
  82
  83 JSObject* HTMLPictureElement::WrapNode(JSContext* aCx,
  84                                        JS::Handle<JSObject*> aGivenProto) {
  85   return HTMLPictureElement_Binding::Wrap(aCx, this, aGivenProto);
  86 }
  87
  88 }  // namespace dom
  89 }  // namespace mozilla