mirror of
https://github.com/mozilla/gecko-dev.git
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270 lines
9 KiB
C++
270 lines
9 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 "nsAttrValue.h"
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#include "nsAttrValueOrString.h"
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#include "nsGenericHTMLElement.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "mozilla/dom/Document.h"
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#include "nsNetUtil.h"
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#include "nsContentUtils.h"
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#include "nsUnicharUtils.h" // for nsCaseInsensitiveStringComparator()
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#include "nsIScriptContext.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsServiceManagerUtils.h"
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#include "nsError.h"
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#include "nsTArray.h"
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#include "nsDOMJSUtils.h"
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#include "nsIScriptError.h"
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#include "nsISupportsImpl.h"
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#include "nsDOMTokenList.h"
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#include "mozilla/dom/FetchPriority.h"
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#include "mozilla/dom/HTMLScriptElement.h"
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#include "mozilla/dom/HTMLScriptElementBinding.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/StaticPrefs_dom.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Script)
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using JS::loader::ScriptKind;
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namespace mozilla::dom {
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JSObject* HTMLScriptElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return HTMLScriptElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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HTMLScriptElement::HTMLScriptElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
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FromParser aFromParser)
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: nsGenericHTMLElement(std::move(aNodeInfo)), ScriptElement(aFromParser) {
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AddMutationObserver(this);
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}
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HTMLScriptElement::~HTMLScriptElement() = default;
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLScriptElement,
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nsGenericHTMLElement,
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nsIScriptLoaderObserver,
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nsIScriptElement,
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nsIMutationObserver)
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NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLScriptElement, nsGenericHTMLElement,
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mBlocking)
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nsresult HTMLScriptElement::BindToTree(BindContext& aContext,
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nsINode& aParent) {
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nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
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NS_ENSURE_SUCCESS(rv, rv);
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if (IsInComposedDoc()) {
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MaybeProcessScript();
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}
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return NS_OK;
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}
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bool HTMLScriptElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::crossorigin) {
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ParseCORSValue(aValue, aResult);
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return true;
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}
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if (aAttribute == nsGkAtoms::integrity) {
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aResult.ParseStringOrAtom(aValue);
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return true;
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}
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if (aAttribute == nsGkAtoms::fetchpriority) {
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ParseFetchPriority(aValue, aResult);
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return true;
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}
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if (aAttribute == nsGkAtoms::blocking &&
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StaticPrefs::dom_element_blocking_enabled()) {
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aResult.ParseAtomArray(aValue);
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return true;
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}
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}
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return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
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aMaybeScriptedPrincipal, aResult);
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}
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nsresult HTMLScriptElement::Clone(dom::NodeInfo* aNodeInfo,
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nsINode** aResult) const {
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*aResult = nullptr;
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HTMLScriptElement* it = new (aNodeInfo->NodeInfoManager())
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HTMLScriptElement(do_AddRef(aNodeInfo), NOT_FROM_PARSER);
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nsCOMPtr<nsINode> kungFuDeathGrip = it;
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nsresult rv = const_cast<HTMLScriptElement*>(this)->CopyInnerTo(it);
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NS_ENSURE_SUCCESS(rv, rv);
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// The clone should be marked evaluated if we are.
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it->mAlreadyStarted = mAlreadyStarted;
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it->mLineNumber = mLineNumber;
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it->mMalformed = mMalformed;
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kungFuDeathGrip.swap(*aResult);
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return NS_OK;
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}
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void HTMLScriptElement::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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if (nsGkAtoms::async == aName && kNameSpaceID_None == aNamespaceID) {
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mForceAsync = false;
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}
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if (nsGkAtoms::src == aName && kNameSpaceID_None == aNamespaceID) {
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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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}
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return nsGenericHTMLElement::AfterSetAttr(
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aNamespaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify);
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}
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void HTMLScriptElement::GetInnerHTML(nsAString& aInnerHTML,
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OOMReporter& aError) {
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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 HTMLScriptElement::SetInnerHTML(const nsAString& aInnerHTML,
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nsIPrincipal* aScriptedPrincipal,
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ErrorResult& aError) {
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aError = nsContentUtils::SetNodeTextContent(this, aInnerHTML, true);
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}
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void HTMLScriptElement::GetText(nsAString& aValue, ErrorResult& aRv) const {
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if (!nsContentUtils::GetNodeTextContent(this, false, aValue, fallible)) {
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aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
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}
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}
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void HTMLScriptElement::SetText(const nsAString& aValue, ErrorResult& aRv) {
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aRv = nsContentUtils::SetNodeTextContent(this, aValue, true);
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}
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// variation of this code in SVGScriptElement - check if changes
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// need to be transfered when modifying
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void HTMLScriptElement::GetScriptText(nsAString& text) const {
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GetText(text, IgnoreErrors());
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}
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void HTMLScriptElement::GetScriptCharset(nsAString& charset) {
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GetCharset(charset);
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}
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void HTMLScriptElement::FreezeExecutionAttrs(const Document* aOwnerDoc) {
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if (mFrozen) {
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return;
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}
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// Determine whether this is a(n) classic/module/importmap script.
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DetermineKindFromType(aOwnerDoc);
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// variation of this code in SVGScriptElement - check if changes
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// need to be transfered when modifying. Note that we don't use GetSrc here
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// because it will return the base URL when the attr value is "".
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nsAutoString src;
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if (GetAttr(nsGkAtoms::src, src)) {
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// Empty src should be treated as invalid URL.
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if (!src.IsEmpty()) {
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nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(mUri), src,
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OwnerDoc(), GetBaseURI());
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if (!mUri) {
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AutoTArray<nsString, 2> params = {u"src"_ns, src};
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nsContentUtils::ReportToConsole(
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nsIScriptError::warningFlag, "HTML"_ns, OwnerDoc(),
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nsContentUtils::eDOM_PROPERTIES, "ScriptSourceInvalidUri", params,
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nullptr, u""_ns, GetScriptLineNumber(),
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GetScriptColumnNumber().oneOriginValue());
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}
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} else {
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AutoTArray<nsString, 1> params = {u"src"_ns};
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nsContentUtils::ReportToConsole(
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nsIScriptError::warningFlag, "HTML"_ns, OwnerDoc(),
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nsContentUtils::eDOM_PROPERTIES, "ScriptSourceEmpty", params, nullptr,
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u""_ns, GetScriptLineNumber(),
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GetScriptColumnNumber().oneOriginValue());
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}
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// At this point mUri will be null for invalid URLs.
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mExternal = true;
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}
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bool async = (mExternal || mKind == ScriptKind::eModule) && Async();
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bool defer = mExternal && Defer();
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mDefer = !async && defer;
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mAsync = async;
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mFrozen = true;
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}
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CORSMode HTMLScriptElement::GetCORSMode() const {
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return AttrValueToCORSMode(GetParsedAttr(nsGkAtoms::crossorigin));
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}
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FetchPriority HTMLScriptElement::GetFetchPriority() const {
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return nsGenericHTMLElement::GetFetchPriority();
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}
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mozilla::dom::ReferrerPolicy HTMLScriptElement::GetReferrerPolicy() {
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return GetReferrerPolicyAsEnum();
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}
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bool HTMLScriptElement::HasScriptContent() {
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return (mFrozen ? mExternal : HasAttr(nsGkAtoms::src)) ||
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nsContentUtils::HasNonEmptyTextContent(this);
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}
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// https://html.spec.whatwg.org/multipage/scripting.html#dom-script-supports
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/* static */
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bool HTMLScriptElement::Supports(const GlobalObject& aGlobal,
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const nsAString& aType) {
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nsAutoString type(aType);
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return aType.EqualsLiteral("classic") || aType.EqualsLiteral("module") ||
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aType.EqualsLiteral("importmap");
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}
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nsDOMTokenList* HTMLScriptElement::Blocking() {
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if (!mBlocking) {
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mBlocking =
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new nsDOMTokenList(this, nsGkAtoms::blocking, sSupportedBlockingValues);
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}
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return mBlocking;
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}
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bool HTMLScriptElement::IsPotentiallyRenderBlocking() {
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return BlockingContainsRender();
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// TODO: handle implicitly potentially render blocking
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// https://html.spec.whatwg.org/#implicitly-potentially-render-blocking
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// A script element el is implicitly potentially render-blocking if el's type
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// is "classic", el is parser-inserted, and el does not have an async or defer
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// attribute.
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}
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} // namespace mozilla::dom
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