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Document.cpp
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Document.cpp
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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2006 Alexey Proskuryakov (ap@webkit.org)
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "Document.h"
#include "AXObjectCache.h"
#include "Attr.h"
#include "CDATASection.h"
#include "CSSAnimationController.h"
#include "CSSFontSelector.h"
#include "CSSStyleDeclaration.h"
#include "CSSStyleSheet.h"
#include "CachedCSSStyleSheet.h"
#include "CachedFrame.h"
#include "CachedResourceLoader.h"
#include "CanvasRenderingContext2D.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "Comment.h"
#include "CommonVM.h"
#include "CompositionEvent.h"
#include "ConstantPropertyMap.h"
#include "ContentSecurityPolicy.h"
#include "CookieJar.h"
#include "CustomElementReactionQueue.h"
#include "CustomElementRegistry.h"
#include "CustomEvent.h"
#include "DOMImplementation.h"
#include "DOMNamedFlowCollection.h"
#include "DOMWindow.h"
#include "DateComponents.h"
#include "DebugPageOverlays.h"
#include "DocumentLoader.h"
#include "DocumentMarkerController.h"
#include "DocumentSharedObjectPool.h"
#include "DocumentType.h"
#include "Editing.h"
#include "Editor.h"
#include "ElementIterator.h"
#include "EventHandler.h"
#include "ExtensionStyleSheets.h"
#include "FocusController.h"
#include "FontFaceSet.h"
#include "FormController.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "GenericCachedHTMLCollection.h"
#include "HTMLAllCollection.h"
#include "HTMLAnchorElement.h"
#include "HTMLBaseElement.h"
#include "HTMLBodyElement.h"
#include "HTMLCanvasElement.h"
#include "HTMLDocument.h"
#include "HTMLElementFactory.h"
#include "HTMLFormControlElement.h"
#include "HTMLFrameOwnerElement.h"
#include "HTMLFrameSetElement.h"
#include "HTMLHeadElement.h"
#include "HTMLHtmlElement.h"
#include "HTMLImageElement.h"
#include "HTMLInputElement.h"
#include "HTMLLinkElement.h"
#include "HTMLMediaElement.h"
#include "HTMLNameCollection.h"
#include "HTMLParserIdioms.h"
#include "HTMLPictureElement.h"
#include "HTMLPlugInElement.h"
#include "HTMLScriptElement.h"
#include "HTMLStyleElement.h"
#include "HTMLTitleElement.h"
#include "HTMLUnknownElement.h"
#include "HTTPHeaderNames.h"
#include "HTTPParsers.h"
#include "HashChangeEvent.h"
#include "History.h"
#include "HitTestResult.h"
#include "ImageLoader.h"
#include "InspectorInstrumentation.h"
#include "JSCustomElementInterface.h"
#include "JSLazyEventListener.h"
#include "KeyboardEvent.h"
#include "Language.h"
#include "LayoutDisallowedScope.h"
#include "LoaderStrategy.h"
#include "Logging.h"
#include "MainFrame.h"
#include "MediaCanStartListener.h"
#include "MediaProducer.h"
#include "MediaQueryList.h"
#include "MediaQueryMatcher.h"
#include "MessageEvent.h"
#include "MouseEventWithHitTestResults.h"
#include "MutationEvent.h"
#include "NameNodeList.h"
#include "NamedFlowCollection.h"
#include "NavigationDisabler.h"
#include "NavigationScheduler.h"
#include "NestingLevelIncrementer.h"
#include "NoEventDispatchAssertion.h"
#include "NodeIterator.h"
#include "NodeRareData.h"
#include "NodeWithIndex.h"
#include "OriginAccessEntry.h"
#include "OverflowEvent.h"
#include "PageConsoleClient.h"
#include "PageGroup.h"
#include "PageTransitionEvent.h"
#include "PlatformLocale.h"
#include "PlatformMediaSessionManager.h"
#include "PlatformScreen.h"
#include "PlatformStrategies.h"
#include "PlugInsResources.h"
#include "PluginDocument.h"
#include "PointerLockController.h"
#include "PopStateEvent.h"
#include "ProcessingInstruction.h"
#include "PublicSuffix.h"
#include "RealtimeMediaSourceCenter.h"
#include "RenderChildIterator.h"
#include "RenderLayerCompositor.h"
#include "RenderTreeUpdater.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "RequestAnimationFrameCallback.h"
#include "RuntimeEnabledFeatures.h"
#include "SVGDocumentExtensions.h"
#include "SVGElement.h"
#include "SVGElementFactory.h"
#include "SVGNames.h"
#include "SVGSVGElement.h"
#include "SVGTitleElement.h"
#include "SVGZoomEvent.h"
#include "SchemeRegistry.h"
#include "ScopedEventQueue.h"
#include "ScriptController.h"
#include "ScriptModuleLoader.h"
#include "ScriptRunner.h"
#include "ScriptSourceCode.h"
#include "ScriptedAnimationController.h"
#include "ScrollingCoordinator.h"
#include "SecurityOrigin.h"
#include "SecurityOriginData.h"
#include "SecurityOriginPolicy.h"
#include "SecurityPolicy.h"
#include "SegmentedString.h"
#include "SelectorQuery.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "SocketProvider.h"
#include "StorageEvent.h"
#include "StyleProperties.h"
#include "StyleResolveForDocument.h"
#include "StyleResolver.h"
#include "StyleScope.h"
#include "StyleSheetContents.h"
#include "StyleSheetList.h"
#include "StyleTreeResolver.h"
#include "SubresourceLoader.h"
#include "TextAutoSizing.h"
#include "TextEvent.h"
#include "TextNodeTraversal.h"
#include "TransformSource.h"
#include "TreeWalker.h"
#include "UserGestureIndicator.h"
#include "ValidationMessageClient.h"
#include "VisibilityChangeClient.h"
#include "VisitedLinkState.h"
#include "WheelEvent.h"
#include "WindowFeatures.h"
#include "XMLDocument.h"
#include "XMLDocumentParser.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include "XPathEvaluator.h"
#include "XPathExpression.h"
#include "XPathNSResolver.h"
#include "XPathResult.h"
#include <ctime>
#include <inspector/ConsoleMessage.h>
#include <inspector/ScriptCallStack.h>
#include <wtf/CurrentTime.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/SetForScope.h>
#include <wtf/SystemTracing.h>
#include <wtf/text/StringBuffer.h>
#include <yarr/RegularExpression.h>
#if ENABLE(DEVICE_ORIENTATION)
#include "DeviceMotionEvent.h"
#include "DeviceOrientationEvent.h"
#endif
#if ENABLE(FULLSCREEN_API)
#include "RenderFullScreen.h"
#endif
#if ENABLE(INDEXED_DATABASE)
#include "IDBConnectionProxy.h"
#include "IDBOpenDBRequest.h"
#endif
#if PLATFORM(IOS)
#include "CSSFontSelector.h"
#include "DeviceMotionClientIOS.h"
#include "DeviceMotionController.h"
#include "DeviceOrientationClientIOS.h"
#include "DeviceOrientationController.h"
#include "Geolocation.h"
#include "Navigator.h"
#include "NavigatorGeolocation.h"
#include "WKContentObservation.h"
#include "WebCoreSystemInterface.h"
#endif
#if ENABLE(IOS_GESTURE_EVENTS)
#include "GestureEvent.h"
#endif
#if ENABLE(MATHML)
#include "MathMLElement.h"
#include "MathMLElementFactory.h"
#include "MathMLNames.h"
#endif
#if ENABLE(MEDIA_SESSION)
#include "MediaSession.h"
#endif
#if USE(QUICK_LOOK)
#include "QuickLook.h"
#endif
#if ENABLE(TOUCH_EVENTS)
#include "TouchEvent.h"
#endif
#if ENABLE(VIDEO_TRACK)
#include "CaptionUserPreferences.h"
#endif
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
#include "MediaPlaybackTargetClient.h"
#endif
#if ENABLE(XSLT)
#include "XSLTProcessor.h"
#endif
#if ENABLE(MEDIA_STREAM)
#include "MediaStream.h"
#include "MediaStreamRegistry.h"
#endif
#if ENABLE(WEBGL)
#include "WebGLRenderingContext.h"
#endif
#if ENABLE(WEBGL2)
#include "WebGL2RenderingContext.h"
#endif
#if ENABLE(WEBGPU)
#include "WebGPURenderingContext.h"
#endif
using namespace WTF;
using namespace Unicode;
namespace WebCore {
using namespace HTMLNames;
static const unsigned cMaxWriteRecursionDepth = 21;
bool Document::hasEverCreatedAnAXObjectCache = false;
// DOM Level 2 says (letters added):
//
// a) Name start characters must have one of the categories Ll, Lu, Lo, Lt, Nl.
// b) Name characters other than Name-start characters must have one of the categories Mc, Me, Mn, Lm, or Nd.
// c) Characters in the compatibility area (i.e. with character code greater than #xF900 and less than #xFFFE) are not allowed in XML names.
// d) Characters which have a font or compatibility decomposition (i.e. those with a "compatibility formatting tag" in field 5 of the database -- marked by field 5 beginning with a "<") are not allowed.
// e) The following characters are treated as name-start characters rather than name characters, because the property file classifies them as Alphabetic: [#x02BB-#x02C1], #x0559, #x06E5, #x06E6.
// f) Characters #x20DD-#x20E0 are excluded (in accordance with Unicode, section 5.14).
// g) Character #x00B7 is classified as an extender, because the property list so identifies it.
// h) Character #x0387 is added as a name character, because #x00B7 is its canonical equivalent.
// i) Characters ':' and '_' are allowed as name-start characters.
// j) Characters '-' and '.' are allowed as name characters.
//
// It also contains complete tables. If we decide it's better, we could include those instead of the following code.
static inline bool isValidNameStart(UChar32 c)
{
// rule (e) above
if ((c >= 0x02BB && c <= 0x02C1) || c == 0x559 || c == 0x6E5 || c == 0x6E6)
return true;
// rule (i) above
if (c == ':' || c == '_')
return true;
// rules (a) and (f) above
if (!(U_GET_GC_MASK(c) & (U_GC_LL_MASK | U_GC_LU_MASK | U_GC_LO_MASK | U_GC_LT_MASK | U_GC_NL_MASK)))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
int type = u_getIntPropertyValue(c, UCHAR_DECOMPOSITION_TYPE);
if (type == U_DT_FONT || type == U_DT_COMPAT)
return false;
return true;
}
static inline bool isValidNamePart(UChar32 c)
{
// rules (a), (e), and (i) above
if (isValidNameStart(c))
return true;
// rules (g) and (h) above
if (c == 0x00B7 || c == 0x0387)
return true;
// rule (j) above
if (c == '-' || c == '.')
return true;
// rules (b) and (f) above
if (!(U_GET_GC_MASK(c) & (U_GC_M_MASK | U_GC_LM_MASK | U_GC_ND_MASK)))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
int type = u_getIntPropertyValue(c, UCHAR_DECOMPOSITION_TYPE);
if (type == U_DT_FONT || type == U_DT_COMPAT)
return false;
return true;
}
static Widget* widgetForElement(Element* focusedElement)
{
if (!focusedElement)
return nullptr;
auto* renderer = focusedElement->renderer();
if (!is<RenderWidget>(renderer))
return nullptr;
return downcast<RenderWidget>(*renderer).widget();
}
static bool acceptsEditingFocus(const Element& element)
{
ASSERT(element.hasEditableStyle());
auto* root = element.rootEditableElement();
Frame* frame = element.document().frame();
if (!frame || !root)
return false;
return frame->editor().shouldBeginEditing(rangeOfContents(*root).ptr());
}
static bool canAccessAncestor(const SecurityOrigin& activeSecurityOrigin, Frame* targetFrame)
{
// targetFrame can be 0 when we're trying to navigate a top-level frame
// that has a 0 opener.
if (!targetFrame)
return false;
const bool isLocalActiveOrigin = activeSecurityOrigin.isLocal();
for (Frame* ancestorFrame = targetFrame; ancestorFrame; ancestorFrame = ancestorFrame->tree().parent()) {
Document* ancestorDocument = ancestorFrame->document();
// FIXME: Should be an ASSERT? Frames should alway have documents.
if (!ancestorDocument)
return true;
const SecurityOrigin& ancestorSecurityOrigin = ancestorDocument->securityOrigin();
if (activeSecurityOrigin.canAccess(ancestorSecurityOrigin))
return true;
// Allow file URL descendant navigation even when allowFileAccessFromFileURLs is false.
// FIXME: It's a bit strange to special-case local origins here. Should we be doing
// something more general instead?
if (isLocalActiveOrigin && ancestorSecurityOrigin.isLocal())
return true;
}
return false;
}
static void printNavigationErrorMessage(Frame* frame, const URL& activeURL, const char* reason)
{
String message = "Unsafe JavaScript attempt to initiate navigation for frame with URL '" + frame->document()->url().string() + "' from frame with URL '" + activeURL.string() + "'. " + reason + "\n";
// FIXME: should we print to the console of the document performing the navigation instead?
frame->document()->domWindow()->printErrorMessage(message);
}
uint64_t Document::s_globalTreeVersion = 0;
HashSet<Document*>& Document::allDocuments()
{
static NeverDestroyed<HashSet<Document*>> documents;
return documents;
}
static inline int currentOrientation(Frame* frame)
{
#if ENABLE(ORIENTATION_EVENTS)
if (frame)
return frame->orientation();
#else
UNUSED_PARAM(frame);
#endif
return 0;
}
Document::Document(Frame* frame, const URL& url, unsigned documentClasses, unsigned constructionFlags)
: ContainerNode(*this, CreateDocument)
, TreeScope(*this)
, FrameDestructionObserver(frame)
#if ENABLE(IOS_TOUCH_EVENTS)
, m_touchEventsChangedTimer(*this, &Document::touchEventsChangedTimerFired)
#endif
, m_settings(frame ? Ref<Settings>(frame->settings()) : Settings::create(nullptr))
, m_cachedResourceLoader(m_frame ? Ref<CachedResourceLoader>(m_frame->loader().activeDocumentLoader()->cachedResourceLoader()) : CachedResourceLoader::create(nullptr))
, m_domTreeVersion(++s_globalTreeVersion)
, m_styleScope(std::make_unique<Style::Scope>(*this))
, m_extensionStyleSheets(std::make_unique<ExtensionStyleSheets>(*this))
, m_visitedLinkState(std::make_unique<VisitedLinkState>(*this))
, m_markers(std::make_unique<DocumentMarkerController>(*this))
, m_styleRecalcTimer([this] { updateStyleIfNeeded(); })
, m_updateFocusAppearanceTimer(*this, &Document::updateFocusAppearanceTimerFired)
, m_documentCreationTime(MonotonicTime::now())
, m_scriptRunner(std::make_unique<ScriptRunner>(*this))
, m_moduleLoader(std::make_unique<ScriptModuleLoader>(*this))
, m_xmlVersion(ASCIILiteral("1.0"))
, m_constantPropertyMap(std::make_unique<ConstantPropertyMap>(*this))
, m_documentClasses(documentClasses)
, m_eventQueue(*this)
, m_weakFactory(this)
#if ENABLE(FULLSCREEN_API)
, m_fullScreenChangeDelayTimer(*this, &Document::fullScreenChangeDelayTimerFired)
#endif
, m_loadEventDelayTimer(*this, &Document::loadEventDelayTimerFired)
#if PLATFORM(IOS)
#if ENABLE(DEVICE_ORIENTATION)
, m_deviceMotionClient(std::make_unique<DeviceMotionClientIOS>())
, m_deviceMotionController(std::make_unique<DeviceMotionController>(m_deviceMotionClient.get()))
, m_deviceOrientationClient(std::make_unique<DeviceOrientationClientIOS>())
, m_deviceOrientationController(std::make_unique<DeviceOrientationController>(m_deviceOrientationClient.get()))
#endif
#endif
, m_pendingTasksTimer(*this, &Document::pendingTasksTimerFired)
, m_visualUpdatesSuppressionTimer(*this, &Document::visualUpdatesSuppressionTimerFired)
, m_sharedObjectPoolClearTimer(*this, &Document::clearSharedObjectPool)
, m_fontSelector(CSSFontSelector::create(*this))
, m_didAssociateFormControlsTimer(*this, &Document::didAssociateFormControlsTimerFired)
, m_cookieCacheExpiryTimer(*this, &Document::invalidateDOMCookieCache)
, m_socketProvider(page() ? &page()->socketProvider() : nullptr)
, m_isSynthesized(constructionFlags & Synthesized)
, m_isNonRenderedPlaceholder(constructionFlags & NonRenderedPlaceholder)
, m_orientationNotifier(currentOrientation(frame))
{
allDocuments().add(this);
// We depend on the url getting immediately set in subframes, but we
// also depend on the url NOT getting immediately set in opened windows.
// See fast/dom/early-frame-url.html
// and fast/dom/location-new-window-no-crash.html, respectively.
// FIXME: Can/should we unify this behavior?
if ((frame && frame->ownerElement()) || !url.isEmpty())
setURL(url);
m_cachedResourceLoader->setDocument(this);
resetLinkColor();
resetVisitedLinkColor();
resetActiveLinkColor();
initSecurityContext();
initDNSPrefetch();
m_fontSelector->registerForInvalidationCallbacks(*this);
for (auto& nodeListAndCollectionCount : m_nodeListAndCollectionCounts)
nodeListAndCollectionCount = 0;
}
#if ENABLE(FULLSCREEN_API)
static bool isAttributeOnAllOwners(const WebCore::QualifiedName& attribute, const WebCore::QualifiedName& prefixedAttribute, const HTMLFrameOwnerElement* owner)
{
if (!owner)
return true;
do {
if (!(owner->hasAttribute(attribute) || owner->hasAttribute(prefixedAttribute)))
return false;
} while ((owner = owner->document().ownerElement()));
return true;
}
#endif
Ref<Document> Document::create(Document& contextDocument)
{
auto document = adoptRef(*new Document(nullptr, URL()));
document->setContextDocument(contextDocument);
document->setSecurityOriginPolicy(contextDocument.securityOriginPolicy());
return document;
}
Document::~Document()
{
allDocuments().remove(this);
ASSERT(!renderView());
ASSERT(m_pageCacheState != InPageCache);
ASSERT(m_ranges.isEmpty());
ASSERT(!m_parentTreeScope);
ASSERT(!m_disabledFieldsetElementsCount);
ASSERT(m_inDocumentShadowRoots.isEmpty());
#if ENABLE(DEVICE_ORIENTATION) && PLATFORM(IOS)
m_deviceMotionClient->deviceMotionControllerDestroyed();
m_deviceOrientationClient->deviceOrientationControllerDestroyed();
#endif
if (m_templateDocument)
m_templateDocument->setTemplateDocumentHost(nullptr); // balanced in templateDocument().
// FIXME: Should we reset m_domWindow when we detach from the Frame?
if (m_domWindow)
m_domWindow->resetUnlessSuspendedForDocumentSuspension();
m_scriptRunner = nullptr;
m_moduleLoader = nullptr;
removeAllEventListeners();
// Currently we believe that Document can never outlive the parser.
// Although the Document may be replaced synchronously, DocumentParsers
// generally keep at least one reference to an Element which would in turn
// has a reference to the Document. If you hit this ASSERT, then that
// assumption is wrong. DocumentParser::detach() should ensure that even
// if the DocumentParser outlives the Document it won't cause badness.
ASSERT(!m_parser || m_parser->refCount() == 1);
detachParser();
if (this == &topDocument())
clearAXObjectCache();
m_decoder = nullptr;
if (m_styleSheetList)
m_styleSheetList->detachFromDocument();
extensionStyleSheets().detachFromDocument();
styleScope().clearResolver(); // We need to destroy CSSFontSelector before destroying m_cachedResourceLoader.
m_fontSelector->clearDocument();
m_fontSelector->unregisterForInvalidationCallbacks(*this);
// It's possible for multiple Documents to end up referencing the same CachedResourceLoader (e.g., SVGImages
// load the initial empty document and the SVGDocument with the same DocumentLoader).
if (m_cachedResourceLoader->document() == this)
m_cachedResourceLoader->setDocument(nullptr);
#if ENABLE(VIDEO)
if (auto* platformMediaSessionManager = PlatformMediaSessionManager::sharedManagerIfExists())
platformMediaSessionManager->stopAllMediaPlaybackForDocument(this);
#endif
// We must call clearRareData() here since a Document class inherits TreeScope
// as well as Node. See a comment on TreeScope.h for the reason.
if (hasRareData())
clearRareData();
ASSERT(m_listsInvalidatedAtDocument.isEmpty());
ASSERT(m_collectionsInvalidatedAtDocument.isEmpty());
for (unsigned count : m_nodeListAndCollectionCounts)
ASSERT_UNUSED(count, !count);
}
void Document::removedLastRef()
{
ASSERT(!m_deletionHasBegun);
if (m_referencingNodeCount) {
// If removing a child removes the last node reference, we don't want the scope to be destroyed
// until after removeDetachedChildren returns, so we protect ourselves.
incrementReferencingNodeCount();
RELEASE_ASSERT(!hasLivingRenderTree());
// We must make sure not to be retaining any of our children through
// these extra pointers or we will create a reference cycle.
m_focusedElement = nullptr;
m_hoveredElement = nullptr;
m_activeElement = nullptr;
m_titleElement = nullptr;
m_documentElement = nullptr;
m_focusNavigationStartingNode = nullptr;
m_userActionElements.documentDidRemoveLastRef();
#if ENABLE(FULLSCREEN_API)
m_fullScreenElement = nullptr;
m_fullScreenElementStack.clear();
#endif
m_associatedFormControls.clear();
detachParser();
// removeDetachedChildren() doesn't always unregister IDs,
// so tear down scope information up front to avoid having
// stale references in the map.
destroyTreeScopeData();
removeDetachedChildren();
m_formController = nullptr;
m_markers->detach();
m_cssCanvasElements.clear();
commonTeardown();
#ifndef NDEBUG
// We need to do this right now since selfOnlyDeref() can delete this.
m_inRemovedLastRefFunction = false;
#endif
decrementReferencingNodeCount();
} else {
#ifndef NDEBUG
m_inRemovedLastRefFunction = false;
m_deletionHasBegun = true;
#endif
delete this;
}
}
void Document::commonTeardown()
{
if (svgExtensions())
accessSVGExtensions().pauseAnimations();
clearScriptedAnimationController();
}
Element* Document::getElementByAccessKey(const String& key)
{
if (key.isEmpty())
return nullptr;
if (!m_accessKeyMapValid) {
buildAccessKeyMap(this);
m_accessKeyMapValid = true;
}
return m_elementsByAccessKey.get(key.impl());
}
void Document::buildAccessKeyMap(TreeScope* scope)
{
ASSERT(scope);
for (auto& element : descendantsOfType<Element>(scope->rootNode())) {
const AtomicString& accessKey = element.attributeWithoutSynchronization(accesskeyAttr);
if (!accessKey.isEmpty())
m_elementsByAccessKey.set(accessKey.impl(), &element);
if (ShadowRoot* root = element.shadowRoot())
buildAccessKeyMap(root);
}
}
void Document::invalidateAccessKeyMap()
{
m_accessKeyMapValid = false;
m_elementsByAccessKey.clear();
}
void Document::addImageElementByUsemap(const AtomicStringImpl& name, HTMLImageElement& element)
{
return m_imagesByUsemap.add(name, element, *this);
}
void Document::removeImageElementByUsemap(const AtomicStringImpl& name, HTMLImageElement& element)
{
return m_imagesByUsemap.remove(name, element);
}
HTMLImageElement* Document::imageElementByUsemap(const AtomicStringImpl& name) const
{
return m_imagesByUsemap.getElementByUsemap(name, *this);
}
ExceptionOr<SelectorQuery&> Document::selectorQueryForString(const String& selectorString)
{
if (selectorString.isEmpty())
return Exception { SyntaxError };
if (!m_selectorQueryCache)
m_selectorQueryCache = std::make_unique<SelectorQueryCache>();
return m_selectorQueryCache->add(selectorString, *this);
}
void Document::clearSelectorQueryCache()
{
m_selectorQueryCache = nullptr;
}
MediaQueryMatcher& Document::mediaQueryMatcher()
{
if (!m_mediaQueryMatcher)
m_mediaQueryMatcher = MediaQueryMatcher::create(*this);
return *m_mediaQueryMatcher;
}
void Document::setCompatibilityMode(DocumentCompatibilityMode mode)
{
if (m_compatibilityModeLocked || mode == m_compatibilityMode)
return;
bool wasInQuirksMode = inQuirksMode();
m_compatibilityMode = mode;
clearSelectorQueryCache();
if (inQuirksMode() != wasInQuirksMode) {
// All user stylesheets have to reparse using the different mode.
extensionStyleSheets().clearPageUserSheet();
extensionStyleSheets().invalidateInjectedStyleSheetCache();
}
}
String Document::compatMode() const
{
return inQuirksMode() ? "BackCompat" : "CSS1Compat";
}
void Document::resetLinkColor()
{
m_linkColor = Color(0, 0, 238);
}
void Document::resetVisitedLinkColor()
{
m_visitedLinkColor = Color(85, 26, 139);
}
void Document::resetActiveLinkColor()
{
m_activeLinkColor = Color(255, 0, 0);
}
DOMImplementation& Document::implementation()
{
if (!m_implementation)
m_implementation = std::make_unique<DOMImplementation>(*this);
return *m_implementation;
}
bool Document::hasManifest() const
{
return documentElement() && documentElement()->hasTagName(htmlTag) && documentElement()->hasAttributeWithoutSynchronization(manifestAttr);
}
DocumentType* Document::doctype() const
{
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (node->isDocumentTypeNode())
return static_cast<DocumentType*>(node);
}
return nullptr;
}
void Document::childrenChanged(const ChildChange& change)
{
ContainerNode::childrenChanged(change);
// FIXME: Chrome::didReceiveDocType() used to be called only when the doctype changed. We need to check the
// impact of calling this systematically. If the overhead is negligible, we need to rename didReceiveDocType,
// otherwise, we need to detect the doc type changes before updating the viewport.
if (Page* page = this->page())
page->chrome().didReceiveDocType(*frame());
Element* newDocumentElement = childrenOfType<Element>(*this).first();
if (newDocumentElement == m_documentElement)
return;
m_documentElement = newDocumentElement;
// The root style used for media query matching depends on the document element.
styleScope().clearResolver();
}
static ALWAYS_INLINE Ref<HTMLElement> createUpgradeCandidateElement(Document& document, const QualifiedName& name)
{
if (!RuntimeEnabledFeatures::sharedFeatures().customElementsEnabled()
|| Document::validateCustomElementName(name.localName()) != CustomElementNameValidationStatus::Valid)
return HTMLUnknownElement::create(name, document);
auto element = HTMLElement::create(name, document);
element->setIsCustomElementUpgradeCandidate();
return element;
}
static ALWAYS_INLINE Ref<HTMLElement> createUpgradeCandidateElement(Document& document, const AtomicString& localName)
{
return createUpgradeCandidateElement(document, QualifiedName { nullAtom(), localName, xhtmlNamespaceURI });
}
static inline bool isValidHTMLElementName(const AtomicString& localName)
{
return Document::isValidName(localName);
}
static inline bool isValidHTMLElementName(const QualifiedName& name)
{
return Document::isValidName(name.localName());
}
template<typename NameType>
static ExceptionOr<Ref<Element>> createHTMLElementWithNameValidation(Document& document, const NameType& name)
{
auto element = HTMLElementFactory::createKnownElement(name, document);
if (LIKELY(element))
return Ref<Element> { element.releaseNonNull() };
if (auto* window = document.domWindow()) {
auto* registry = window->customElementRegistry();
if (UNLIKELY(registry)) {
if (auto* elementInterface = registry->findInterface(name))
return elementInterface->constructElementWithFallback(document, name);
}
}
if (UNLIKELY(!isValidHTMLElementName(name)))
return Exception { InvalidCharacterError };
return Ref<Element> { createUpgradeCandidateElement(document, name) };
}
ExceptionOr<Ref<Element>> Document::createElementForBindings(const AtomicString& name)
{
if (isHTMLDocument())
return createHTMLElementWithNameValidation(*this, name.convertToASCIILowercase());
if (isXHTMLDocument())
return createHTMLElementWithNameValidation(*this, name);
if (!isValidName(name))
return Exception { InvalidCharacterError };
return createElement(QualifiedName(nullAtom(), name, nullAtom()), false);
}
Ref<DocumentFragment> Document::createDocumentFragment()
{
return DocumentFragment::create(document());
}
Ref<Text> Document::createTextNode(const String& data)
{
return Text::create(*this, data);
}
Ref<Comment> Document::createComment(const String& data)
{
return Comment::create(*this, data);
}
ExceptionOr<Ref<CDATASection>> Document::createCDATASection(const String& data)
{
if (isHTMLDocument())
return Exception { NotSupportedError };
return CDATASection::create(*this, data);
}
ExceptionOr<Ref<ProcessingInstruction>> Document::createProcessingInstruction(const String& target, const String& data)
{
if (!isValidName(target))
return Exception { InvalidCharacterError };
if (data.contains("?>"))
return Exception { InvalidCharacterError };
return ProcessingInstruction::create(*this, target, data);
}
Ref<Text> Document::createEditingTextNode(const String& text)
{
return Text::createEditingText(*this, text);
}
Ref<CSSStyleDeclaration> Document::createCSSStyleDeclaration()
{
Ref<MutableStyleProperties> propertySet(MutableStyleProperties::create());
return propertySet->ensureCSSStyleDeclaration();
}
ExceptionOr<Ref<Node>> Document::importNode(Node& nodeToImport, bool deep)
{
switch (nodeToImport.nodeType()) {
case DOCUMENT_FRAGMENT_NODE:
if (nodeToImport.isShadowRoot())
break;
FALLTHROUGH;
case ELEMENT_NODE:
case TEXT_NODE:
case CDATA_SECTION_NODE:
case PROCESSING_INSTRUCTION_NODE:
case COMMENT_NODE:
return nodeToImport.cloneNodeInternal(document(), deep ? CloningOperation::Everything : CloningOperation::OnlySelf);
case ATTRIBUTE_NODE:
// FIXME: This will "Attr::normalize" child nodes of Attr.
return Ref<Node> { Attr::create(*this, QualifiedName(nullAtom(), downcast<Attr>(nodeToImport).name(), nullAtom()), downcast<Attr>(nodeToImport).value()) };
case DOCUMENT_NODE: // Can't import a document into another document.
case DOCUMENT_TYPE_NODE: // FIXME: Support cloning a DocumentType node per DOM4.
break;
}
return Exception { NotSupportedError };
}
ExceptionOr<Ref<Node>> Document::adoptNode(Node& source)
{
EventQueueScope scope;
switch (source.nodeType()) {
case DOCUMENT_NODE:
return Exception { NotSupportedError };
case ATTRIBUTE_NODE: {
auto& attr = downcast<Attr>(source);
if (auto* element = attr.ownerElement()) {
auto result = element->removeAttributeNode(attr);
if (result.hasException())
return result.releaseException();
}
break;
}
default:
if (source.isShadowRoot()) {
// ShadowRoot cannot disconnect itself from the host node.
return Exception { HierarchyRequestError };
}
if (is<HTMLFrameOwnerElement>(source)) {
auto& frameOwnerElement = downcast<HTMLFrameOwnerElement>(source);
if (frame() && frame()->tree().isDescendantOf(frameOwnerElement.contentFrame()))
return Exception { HierarchyRequestError };
}
auto result = source.remove();
if (result.hasException())
return result.releaseException();
ASSERT_WITH_SECURITY_IMPLICATION(!source.isConnected());
ASSERT_WITH_SECURITY_IMPLICATION(!source.parentNode());
}
source.setTreeScopeRecursively(*this);
return Ref<Node> { source };
}
bool Document::hasValidNamespaceForElements(const QualifiedName& qName)
{
// These checks are from DOM Core Level 2, createElementNS
// http://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-DocCrElNS
if (!qName.prefix().isEmpty() && qName.namespaceURI().isNull()) // createElementNS(null, "html:div")
return false;
if (qName.prefix() == xmlAtom() && qName.namespaceURI() != XMLNames::xmlNamespaceURI) // createElementNS("http://www.example.com", "xml:lang")
return false;
// Required by DOM Level 3 Core and unspecified by DOM Level 2 Core:
// http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#ID-DocCrElNS