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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.
230 lines
6.3 KiB
C++
230 lines
6.3 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/HTMLStyleElement.h"
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#include "mozilla/dom/HTMLStyleElementBinding.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsIDocument.h"
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#include "nsUnicharUtils.h"
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#include "nsThreadUtils.h"
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#include "nsContentUtils.h"
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#include "nsStubMutationObserver.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(Style)
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namespace mozilla {
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namespace dom {
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HTMLStyleElement::HTMLStyleElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsGenericHTMLElement(std::move(aNodeInfo))
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{
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AddMutationObserver(this);
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}
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HTMLStyleElement::~HTMLStyleElement()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLStyleElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLStyleElement,
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nsGenericHTMLElement)
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tmp->nsStyleLinkElement::Traverse(cb);
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLStyleElement,
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nsGenericHTMLElement)
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tmp->nsStyleLinkElement::Unlink();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLStyleElement,
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nsGenericHTMLElement,
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nsIStyleSheetLinkingElement,
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nsIMutationObserver)
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NS_IMPL_ELEMENT_CLONE(HTMLStyleElement)
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bool
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HTMLStyleElement::Disabled()
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{
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StyleSheet* ss = GetSheet();
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return ss && ss->Disabled();
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}
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void
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HTMLStyleElement::SetDisabled(bool aDisabled)
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{
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if (StyleSheet* ss = GetSheet()) {
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ss->SetDisabled(aDisabled);
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}
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}
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void
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HTMLStyleElement::CharacterDataChanged(nsIContent* aContent,
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const CharacterDataChangeInfo&)
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{
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ContentChanged(aContent);
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}
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void
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HTMLStyleElement::ContentAppended(nsIContent* aFirstNewContent)
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{
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ContentChanged(aFirstNewContent->GetParent());
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}
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void
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HTMLStyleElement::ContentInserted(nsIContent* aChild)
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{
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ContentChanged(aChild);
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}
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void
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HTMLStyleElement::ContentRemoved(nsIContent* aChild,
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nsIContent* aPreviousSibling)
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{
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ContentChanged(aChild);
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}
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void
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HTMLStyleElement::ContentChanged(nsIContent* aContent)
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{
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mTriggeringPrincipal = nullptr;
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if (nsContentUtils::IsInSameAnonymousTree(this, aContent)) {
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Unused << UpdateStyleSheetInternal(nullptr, nullptr);
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}
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}
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nsresult
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HTMLStyleElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
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nsIContent* aBindingParent)
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{
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nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
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aBindingParent);
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NS_ENSURE_SUCCESS(rv, rv);
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void (HTMLStyleElement::*update)() = &HTMLStyleElement::UpdateStyleSheetInternal;
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nsContentUtils::AddScriptRunner(
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NewRunnableMethod("dom::HTMLStyleElement::BindToTree", this, update));
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return rv;
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}
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void
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HTMLStyleElement::UnbindFromTree(bool aDeep, bool aNullParent)
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{
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nsCOMPtr<nsIDocument> oldDoc = GetUncomposedDoc();
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ShadowRoot* oldShadow = GetContainingShadow();
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nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
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if (oldShadow && GetContainingShadow()) {
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// The style is in a shadow tree and is still in the
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// shadow tree. Thus the sheets in the shadow DOM
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// do not need to be updated.
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return;
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}
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Unused << UpdateStyleSheetInternal(oldDoc, oldShadow);
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}
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nsresult
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HTMLStyleElement::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* aSubjectPrincipal,
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bool aNotify)
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{
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if (aNameSpaceID == kNameSpaceID_None) {
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if (aName == nsGkAtoms::title ||
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aName == nsGkAtoms::media ||
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aName == nsGkAtoms::type) {
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Unused << UpdateStyleSheetInternal(nullptr, nullptr, ForceUpdate::Yes);
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}
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}
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return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue,
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aOldValue, aSubjectPrincipal, aNotify);
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}
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void
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HTMLStyleElement::GetInnerHTML(nsAString& aInnerHTML, OOMReporter& aError)
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{
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if (!nsContentUtils::GetNodeTextContent(this, false, aInnerHTML, fallible)) {
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aError.ReportOOM();
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}
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}
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void
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HTMLStyleElement::SetInnerHTML(const nsAString& aInnerHTML,
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nsIPrincipal* aScriptedPrincipal,
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ErrorResult& aError)
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{
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SetTextContentInternal(aInnerHTML, aScriptedPrincipal, aError);
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}
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void
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HTMLStyleElement::SetTextContentInternal(const nsAString& aTextContent,
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nsIPrincipal* aScriptedPrincipal,
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ErrorResult& aError)
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{
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// Per spec, if we're setting text content to an empty string and don't
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// already have any children, we should not trigger any mutation observers, or
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// re-parse the stylesheet.
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if (aTextContent.IsEmpty() && !GetFirstChild()) {
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nsIPrincipal* principal = mTriggeringPrincipal ? mTriggeringPrincipal.get() : NodePrincipal();
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if (principal == aScriptedPrincipal) {
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return;
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}
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}
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SetEnableUpdates(false);
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aError = nsContentUtils::SetNodeTextContent(this, aTextContent, true);
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SetEnableUpdates(true);
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mTriggeringPrincipal = aScriptedPrincipal;
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Unused << UpdateStyleSheetInternal(nullptr, nullptr);
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}
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Maybe<nsStyleLinkElement::SheetInfo>
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HTMLStyleElement::GetStyleSheetInfo()
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{
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if (!IsCSSMimeTypeAttribute(*this)) {
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return Nothing();
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}
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nsAutoString title;
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nsAutoString media;
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GetTitleAndMediaForElement(*this, title, media);
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nsCOMPtr<nsIPrincipal> prin = mTriggeringPrincipal;
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return Some(SheetInfo {
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*OwnerDoc(),
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this,
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nullptr,
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prin.forget(),
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net::ReferrerPolicy::RP_Unset,
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CORS_NONE,
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title,
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media,
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HasAlternateRel::No,
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IsInline::Yes,
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});
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}
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JSObject*
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HTMLStyleElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLStyleElement_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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