зеркало из https://github.com/mozilla/gecko-dev.git
80 строки
2.3 KiB
C++
80 строки
2.3 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/HTMLPictureElement.h"
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#include "mozilla/dom/HTMLPictureElementBinding.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/Preferences.h"
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static const char *kPrefPictureEnabled = "dom.image.picture.enabled";
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// Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Picture) to add pref check.
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nsGenericHTMLElement*
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NS_NewHTMLPictureElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
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mozilla::dom::FromParser aFromParser)
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{
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if (!mozilla::dom::HTMLPictureElement::IsPictureEnabled()) {
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return new mozilla::dom::HTMLUnknownElement(aNodeInfo);
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}
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return new mozilla::dom::HTMLPictureElement(aNodeInfo);
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}
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namespace mozilla {
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namespace dom {
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HTMLPictureElement::HTMLPictureElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsGenericHTMLElement(aNodeInfo)
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{
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}
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HTMLPictureElement::~HTMLPictureElement()
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{
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}
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NS_IMPL_ISUPPORTS_INHERITED(HTMLPictureElement, nsGenericHTMLElement,
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nsIDOMHTMLPictureElement)
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NS_IMPL_ELEMENT_CLONE(HTMLPictureElement)
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void
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HTMLPictureElement::RemoveChildAt(uint32_t aIndex, bool aNotify)
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{
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// Find all img siblings after this <source> to notify them of its demise
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nsCOMPtr<nsINode> child = GetChildAt(aIndex);
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nsCOMPtr<nsIContent> nextSibling;
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if (child && child->Tag() == nsGkAtoms::source) {
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nextSibling = child->GetNextSibling();
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}
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nsGenericHTMLElement::RemoveChildAt(aIndex, aNotify);
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if (nextSibling && nextSibling->GetParentNode() == this) {
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do {
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HTMLImageElement* img = HTMLImageElement::FromContent(nextSibling);
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if (img) {
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img->PictureSourceRemoved(child->AsContent());
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}
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} while ( (nextSibling = nextSibling->GetNextSibling()) );
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}
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}
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bool
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HTMLPictureElement::IsPictureEnabled()
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{
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return HTMLImageElement::IsSrcsetEnabled() &&
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Preferences::GetBool(kPrefPictureEnabled, false);
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}
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JSObject*
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HTMLPictureElement::WrapNode(JSContext* aCx)
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{
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return HTMLPictureElementBinding::Wrap(aCx, this);
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}
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} // namespace dom
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} // namespace mozilla
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