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846d8789ee
Various places in dom/ use the pattern: already_AddRefed<NodeInfo> ni = ...; which is supposed to be disallowed by our static analysis code, but isn't, for whatever reason. To fix our static analysis code, we need to eliminate instances of the above pattern. Unfortunately, eliminating this pattern requires restructuring how Nodes are created. Most Node subclasses take `already_AddRefed<NodeInfo>&` in their constructors, and a few accept `already_AddRefed<NodeInfo>&&`. We need to enforce the latter pattern consistently, which requires changing dozens of source files.
168 lines
5.5 KiB
C++
168 lines
5.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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/HTMLSourceElement.h"
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#include "mozilla/dom/HTMLSourceElementBinding.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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#include "mozilla/dom/ResponsiveImageSelector.h"
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#include "mozilla/dom/MediaList.h"
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#include "mozilla/dom/MediaSource.h"
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#include "nsGkAtoms.h"
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#include "mozilla/dom/BlobURLProtocolHandler.h"
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#include "mozilla/Preferences.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(Source)
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namespace mozilla {
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namespace dom {
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HTMLSourceElement::HTMLSourceElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsGenericHTMLElement(std::move(aNodeInfo))
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{
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}
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HTMLSourceElement::~HTMLSourceElement()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLSourceElement, nsGenericHTMLElement,
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mSrcMediaSource)
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(HTMLSourceElement, nsGenericHTMLElement)
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NS_IMPL_ELEMENT_CLONE(HTMLSourceElement)
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bool
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HTMLSourceElement::MatchesCurrentMedia()
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{
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if (mMediaList) {
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nsPresContext* pctx = OwnerDoc()->GetPresContext();
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return pctx && mMediaList->Matches(pctx);
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}
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// No media specified
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return true;
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}
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/* static */ bool
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HTMLSourceElement::WouldMatchMediaForDocument(const nsAString& aMedia,
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const nsIDocument *aDocument)
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{
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if (aMedia.IsEmpty()) {
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return true;
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}
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nsPresContext* pctx = aDocument->GetPresContext();
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RefPtr<MediaList> mediaList = MediaList::Create(aMedia);
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return pctx && mediaList->Matches(pctx);
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}
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void
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HTMLSourceElement::UpdateMediaList(const nsAttrValue* aValue)
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{
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mMediaList = nullptr;
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nsString mediaStr;
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if (!aValue || (mediaStr = aValue->GetStringValue()).IsEmpty()) {
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return;
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}
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mMediaList = MediaList::Create(mediaStr);
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}
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nsresult
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HTMLSourceElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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bool aNotify)
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{
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if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::srcset) {
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mSrcsetTriggeringPrincipal = nsContentUtils::GetAttrTriggeringPrincipal(
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this, aValue ? aValue->GetStringValue() : EmptyString(),
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aMaybeScriptedPrincipal);
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}
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// If we are associated with a <picture> with a valid <img>, notify it of
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// responsive parameter changes
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Element *parent = nsINode::GetParentElement();
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if (aNameSpaceID == kNameSpaceID_None &&
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(aName == nsGkAtoms::srcset ||
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aName == nsGkAtoms::sizes ||
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aName == nsGkAtoms::media ||
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aName == nsGkAtoms::type) &&
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parent && parent->IsHTMLElement(nsGkAtoms::picture)) {
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nsString strVal = aValue ? aValue->GetStringValue() : EmptyString();
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// Find all img siblings after this <source> and notify them of the change
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nsCOMPtr<nsIContent> sibling = AsContent();
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while ( (sibling = sibling->GetNextSibling()) ) {
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if (sibling->IsHTMLElement(nsGkAtoms::img)) {
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HTMLImageElement *img = static_cast<HTMLImageElement*>(sibling.get());
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if (aName == nsGkAtoms::srcset) {
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img->PictureSourceSrcsetChanged(AsContent(), strVal, aNotify);
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} else if (aName == nsGkAtoms::sizes) {
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img->PictureSourceSizesChanged(AsContent(), strVal, aNotify);
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} else if (aName == nsGkAtoms::media) {
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UpdateMediaList(aValue);
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img->PictureSourceMediaOrTypeChanged(AsContent(), aNotify);
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} else if (aName == nsGkAtoms::type) {
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img->PictureSourceMediaOrTypeChanged(AsContent(), aNotify);
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}
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}
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}
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} else if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::media) {
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UpdateMediaList(aValue);
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} else if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::src) {
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mSrcTriggeringPrincipal = nsContentUtils::GetAttrTriggeringPrincipal(
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this, aValue ? aValue->GetStringValue() : EmptyString(),
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aMaybeScriptedPrincipal);
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mSrcMediaSource = nullptr;
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if (aValue) {
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nsString srcStr = aValue->GetStringValue();
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nsCOMPtr<nsIURI> uri;
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NewURIFromString(srcStr, getter_AddRefs(uri));
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if (uri && IsMediaSourceURI(uri)) {
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NS_GetSourceForMediaSourceURI(uri, getter_AddRefs(mSrcMediaSource));
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}
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}
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}
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return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName,
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aValue, aOldValue,
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aMaybeScriptedPrincipal,
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aNotify);
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}
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nsresult
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HTMLSourceElement::BindToTree(nsIDocument *aDocument,
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nsIContent *aParent,
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nsIContent *aBindingParent)
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{
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nsresult rv = nsGenericHTMLElement::BindToTree(aDocument,
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aParent,
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aBindingParent);
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NS_ENSURE_SUCCESS(rv, rv);
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if (auto* media = HTMLMediaElement::FromNodeOrNull(aParent)) {
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media->NotifyAddedSource();
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}
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return NS_OK;
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}
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JSObject*
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HTMLSourceElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLSourceElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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