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webkit / WebKit / 6372d18ed2fb0e5306b33bd85febb537c2fcf56a / . / Source / WebCore / dom / 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) 2004-2018 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 "ApplicationStateChangeListener.h"
#include "Attr.h"
#include "BeforeUnloadEvent.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 "DOMWindow.h"
#include "DateComponents.h"
#include "DebugPageOverlays.h"
#include "DocumentLoader.h"
#include "DocumentMarkerController.h"
#include "DocumentSharedObjectPool.h"
#include "DocumentTimeline.h"
#include "DocumentType.h"
#include "Editing.h"
#include "Editor.h"
#include "ElementIterator.h"
#include "EventHandler.h"
#include "ExtensionStyleSheets.h"
#include "FocusController.h"
#include "FocusEvent.h"
#include "FontFaceSet.h"
#include "FormController.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "GenericCachedHTMLCollection.h"
#include "HTMLAllCollection.h"
#include "HTMLAnchorElement.h"
#include "HTMLAttachmentElement.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 "ImageBitmapRenderingContext.h"
#include "ImageLoader.h"
#include "InspectorInstrumentation.h"
#include "JSCustomElementInterface.h"
#include "JSDOMPromiseDeferred.h"
#include "JSLazyEventListener.h"
#include "KeyboardEvent.h"
#include "KeyframeEffectReadOnly.h"
#include "LayoutDisallowedScope.h"
#include "LibWebRTCProvider.h"
#include "LoaderStrategy.h"
#include "Logging.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 "NavigationDisabler.h"
#include "NavigationScheduler.h"
#include "NestingLevelIncrementer.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 "PolicyChecker.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 "ResourceLoadObserver.h"
#include "RuntimeApplicationChecks.h"
#include "RuntimeEnabledFeatures.h"
#include "SVGDocumentExtensions.h"
#include "SVGElement.h"
#include "SVGElementFactory.h"
#include "SVGNames.h"
#include "SVGSVGElement.h"
#include "SVGTitleElement.h"
#include "SVGUseElement.h"
#include "SVGZoomEvent.h"
#include "SWClientConnection.h"
#include "SchemeRegistry.h"
#include "ScopedEventQueue.h"
#include "ScriptController.h"
#include "ScriptDisallowedScope.h"
#include "ScriptModuleLoader.h"
#include "ScriptRunner.h"
#include "ScriptSourceCode.h"
#include "ScriptState.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 "ServiceWorkerClientData.h"
#include "ServiceWorkerProvider.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "SocketProvider.h"
#include "StorageEvent.h"
#include "StringCallback.h"
#include "StyleColor.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 "WebAnimation.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 <JavaScriptCore/ConsoleMessage.h>
#include <JavaScriptCore/RegularExpression.h>
#include <JavaScriptCore/ScriptCallStack.h>
#include <JavaScriptCore/VM.h>
#include <ctime>
#include <wtf/IsoMallocInlines.h>
#include <wtf/Language.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/SetForScope.h>
#include <wtf/SystemTracing.h>
#include <wtf/UUID.h>
#include <wtf/text/StringBuffer.h>
#include <wtf/text/TextStream.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"
#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
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(Document);
using namespace PAL;
using namespace WTF;
using namespace Unicode;
using namespace HTMLNames;
static const unsigned cMaxWriteRecursionDepth = 21;
bool Document::hasEverCreatedAnAXObjectCache = false;
unsigned ScriptDisallowedScope::LayoutAssertionDisableScope::s_layoutAssertionDisableCount = 0;
// 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;
auto Document::allDocumentsMap() -> DocumentsMap&
{
static NeverDestroyed<DocumentsMap> documents;
return documents;
}
auto Document::allDocuments() -> DocumentsMap::ValuesIteratorRange
{
return allDocumentsMap().values();
}
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_documentCreationTime(MonotonicTime::now())
, m_scriptRunner(std::make_unique<ScriptRunner>(*this))
, m_moduleLoader(std::make_unique<ScriptModuleLoader>(*this))
#if ENABLE(XSLT)
, m_applyPendingXSLTransformsTimer(*this, &Document::applyPendingXSLTransformsTimerFired)
#endif
, m_xmlVersion(ASCIILiteral("1.0"))
, m_constantPropertyMap(std::make_unique<ConstantPropertyMap>(*this))
, m_documentClasses(documentClasses)
, m_eventQueue(*this)
, 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))
, m_identifier(generateObjectIdentifier<DocumentIdentifierType>())
{
auto addResult = allDocumentsMap().add(m_identifier, this);
ASSERT_UNUSED(addResult, addResult.isNewEntry);
// 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()
{
if (m_logger)
m_logger->removeObserver(*this);
ASSERT(allDocumentsMap().contains(m_identifier));
allDocumentsMap().remove(m_identifier);
// We need to remove from the contexts map very early in the destructor so that calling postTask() on this Document from another thread is safe.
removeFromContextsMap();
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();
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_listsInvalidatedAtDocument.isEmpty());
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_collectionsInvalidatedAtDocument.isEmpty());
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_svgUseElements.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.clear();
#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 = StyleColor::colorFromKeyword(CSSValueWebkitLink, styleColorOptions());
}
void Document::resetVisitedLinkColor()
{
m_visitedLinkColor = StyleColor::colorFromKeyword(CSSValueWebkitLink, styleColorOptions() | StyleColor::Options::ForVisitedLink);
}
void Document::resetActiveLinkColor()
{
m_activeLinkColor = StyleColor::colorFromKeyword(CSSValueWebkitActivelink, styleColorOptions());
}
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();
RELEASE_ASSERT(!source.isConnected());
RELEASE_ASSERT(!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
// createElementNS("http://www.w3.org/2000/xmlns/", "foo:bar"), createElementNS(null, "xmlns:bar"), createElementNS(null, "xmlns")
if (qName.prefix() == xmlnsAtom() || (qName.prefix().isEmpty() && qName.localName() == xmlnsAtom()))
return qName.namespaceURI() == XMLNSNames::xmlnsNamespaceURI;
return qName.namespaceURI() != XMLNSNames::xmlnsNamespaceURI;
}
bool Document::hasValidNamespaceForAttributes(const QualifiedName& qName)
{
return hasValidNamespaceForElements(qName);
}
static Ref<HTMLElement> createFallbackHTMLElement(Document& document, const QualifiedName& name)
{
if (auto* window = document.domWindow()) {
auto* registry = window->customElementRegistry();
if (UNLIKELY(registry)) {
if (auto* elementInterface = registry->findInterface(name)) {
auto element = HTMLElement::create(name, document);
element->enqueueToUpgrade(*elementInterface);
return element;
}
}
}
// FIXME: Should we also check the equality of prefix between the custom element and name?
return createUpgradeCandidateElement(document, name);
}
// FIXME: This should really be in a possible ElementFactory class.
Ref<Element> Document::createElement(const QualifiedName& name, bool createdByParser)
{
RefPtr<Element> element;
// FIXME: Use registered namespaces and look up in a hash to find the right factory.
if (name.namespaceURI() == xhtmlNamespaceURI) {
element = HTMLElementFactory::createKnownElement(name, *this, nullptr, createdByParser);
if (UNLIKELY(!element))
element = createFallbackHTMLElement(*this, name);
} else if (name.namespaceURI() == SVGNames::svgNamespaceURI)
element = SVGElementFactory::createElement(name, *this, createdByParser);
#if ENABLE(MATHML)
else if (name.namespaceURI() == MathMLNames::mathmlNamespaceURI)
element = MathMLElementFactory::createElement(name, *this, createdByParser);
#endif
if (element)
m_sawElementsInKnownNamespaces = true;
else
element = Element::create(name, document());
// <image> uses imgTag so we need a special rule.
ASSERT((name.matches(imageTag) && element->tagQName().matches(imgTag) && element->tagQName().prefix() == name.prefix()) || name == element->tagQName());
return element.releaseNonNull();
}
// https://html.spec.whatwg.org/#valid-custom-element-name
struct UnicodeCodePointRange {
UChar32 minimum;
UChar32 maximum;
};
#if !ASSERT_DISABLED
static inline bool operator<(const UnicodeCodePointRange& a, const UnicodeCodePointRange& b)
{
ASSERT(a.minimum <= a.maximum);
ASSERT(b.minimum <= b.maximum);
return a.maximum < b.minimum;
}
#endif
static inline bool operator<(const UnicodeCodePointRange& a, UChar32 b)
{
ASSERT(a.minimum <= a.maximum);
return a.maximum < b;
}
static inline bool operator<(UChar32 a, const UnicodeCodePointRange& b)
{
ASSERT(b.minimum <= b.maximum);
return a < b.minimum;
}
static inline bool isPotentialCustomElementNameCharacter(UChar32 character)
{
static const UnicodeCodePointRange ranges[] = {
{ '-', '.' },
{ '0', '9' },
{ '_', '_' },
{ 'a', 'z' },
{ 0xB7, 0xB7 },
{ 0xC0, 0xD6 },
{ 0xD8, 0xF6 },
{ 0xF8, 0x37D },
{ 0x37F, 0x1FFF },
{ 0x200C, 0x200D },
{ 0x203F, 0x2040 },
{ 0x2070, 0x218F },
{ 0x2C00, 0x2FEF },
{ 0x3001, 0xD7FF },
{ 0xF900, 0xFDCF },
{ 0xFDF0, 0xFFFD },
{ 0x10000, 0xEFFFF },
};
ASSERT(std::is_sorted(std::begin(ranges), std::end(ranges)));
return std::binary_search(std::begin(ranges), std::end(ranges), character);
}
CustomElementNameValidationStatus Document::validateCustomElementName(const AtomicString& localName)
{
if (!isASCIILower(localName[0]))
return CustomElementNameValidationStatus::FirstCharacterIsNotLowercaseASCIILetter;
bool containsHyphen = false;
for (auto character : StringView(localName).codePoints()) {
if (isASCIIUpper(character))
return CustomElementNameValidationStatus::ContainsUppercaseASCIILetter;
if (!isPotentialCustomElementNameCharacter(character))
return CustomElementNameValidationStatus::ContainsDisallowedCharacter;
if (character == '-')
containsHyphen = true;
}
if (!containsHyphen)
return CustomElementNameValidationStatus::ContainsNoHyphen;
#if ENABLE(MATHML)
const auto& annotationXmlLocalName = MathMLNames::annotation_xmlTag->localName();
#else
static NeverDestroyed<const AtomicString> annotationXmlLocalName("annotation-xml", AtomicString::ConstructFromLiteral);
#endif
if (localName == SVGNames::color_profileTag->localName()
|| localName == SVGNames::font_faceTag->localName()
|| localName == SVGNames::font_face_formatTag->localName()
|| localName == SVGNames::font_face_nameTag->localName()
|| localName == SVGNames::font_face_srcTag->localName()
|| localName == SVGNames::font_face_uriTag->localName()
|| localName == SVGNames::missing_glyphTag->localName()
|| localName == annotationXmlLocalName)
return CustomElementNameValidationStatus::ConflictsWithStandardElementName;
return CustomElementNameValidationStatus::Valid;
}
ExceptionOr<Ref<Element>> Document::createElementNS(const AtomicString& namespaceURI, const String& qualifiedName)
{
auto parseResult = parseQualifiedName(namespaceURI, qualifiedName);
if (parseResult.hasException())
return parseResult.releaseException();
QualifiedName parsedName { parseResult.releaseReturnValue() };
if (!hasValidNamespaceForElements(parsedName))
return Exception { NamespaceError };
if (parsedName.namespaceURI() == xhtmlNamespaceURI)
return createHTMLElementWithNameValidation(*this, parsedName);
return createElement(parsedName, false);
}
void Document::setReadyState(ReadyState readyState)
{
if (readyState == m_readyState)
return;
switch (readyState) {
case Loading:
if (!m_documentTiming.domLoading)
m_documentTiming.domLoading = MonotonicTime::now();
break;
case Interactive:
if (!m_documentTiming.domInteractive)
m_documentTiming.domInteractive = MonotonicTime::now();
break;
case Complete:
if (!m_documentTiming.domComplete)
m_documentTiming.domComplete = MonotonicTime::now();
break;
}
m_readyState = readyState;
dispatchEvent(Event::create(eventNames().readystatechangeEvent, false, false));
if (settings().suppressesIncrementalRendering())
setVisualUpdatesAllowed(readyState);
}
void Document::setVisualUpdatesAllowed(ReadyState readyState)
{
ASSERT(settings().suppressesIncrementalRendering());
switch (readyState) {
case Loading:
ASSERT(!m_visualUpdatesSuppressionTimer.isActive());
ASSERT(m_visualUpdatesAllowed);
setVisualUpdatesAllowed(false);
break;
case Interactive:
ASSERT(m_visualUpdatesSuppressionTimer.isActive() || m_visualUpdatesAllowed);
break;
case Complete:
if (m_visualUpdatesSuppressionTimer.isActive()) {
ASSERT(!m_visualUpdatesAllowed);
if (view() && !view()->visualUpdatesAllowedByClient())
return;
setVisualUpdatesAllowed(true);
} else
ASSERT(m_visualUpdatesAllowed);
break;
}
}
void Document::setVisualUpdatesAllowed(bool visualUpdatesAllowed)
{
if (m_visualUpdatesAllowed == visualUpdatesAllowed)
return;
m_visualUpdatesAllowed = visualUpdatesAllowed;
if (visualUpdatesAllowed)
m_visualUpdatesSuppressionTimer.stop();
else
m_visualUpdatesSuppressionTimer.startOneShot(1_s * settings().incrementalRenderingSuppressionTimeoutInSeconds());
if (!visualUpdatesAllowed)
return;
RefPtr<FrameView> frameView = view();
bool needsLayout = frameView && renderView() && (frameView->layoutContext().isLayoutPending() || renderView()->needsLayout());
if (needsLayout)
updateLayout();
if (Page* page = this->page()) {
if (frame()->isMainFrame()) {
frameView->addPaintPendingMilestones(DidFirstPaintAfterSuppressedIncrementalRendering);
if (page->requestedLayoutMilestones() & DidFirstLayoutAfterSuppressedIncrementalRendering)
frame()->loader().didReachLayoutMilestone(DidFirstLayoutAfterSuppressedIncrementalRendering);
}
}
if (frameView)
frameView->updateCompositingLayersAfterLayout();
if (RenderView* renderView = this->renderView())
renderView->repaintViewAndCompositedLayers();
if (Frame* frame = this->frame())
frame->loader().forcePageTransitionIfNeeded();
}
void Document::visualUpdatesSuppressionTimerFired()
{
ASSERT(!m_visualUpdatesAllowed);
// If the client is extending the visual update suppression period explicitly, the
// watchdog should not re-enable visual updates itself, but should wait for the client.
if (view() && !view()->visualUpdatesAllowedByClient())
return;
setVisualUpdatesAllowed(true);
}
void Document::setVisualUpdatesAllowedByClient(bool visualUpdatesAllowedByClient)
{
// We should only re-enable visual updates if ReadyState is Completed or the watchdog timer has fired,
// both of which we can determine by looking at the timer.
if (visualUpdatesAllowedByClient && !m_visualUpdatesSuppressionTimer.isActive() && !visualUpdatesAllowed())
setVisualUpdatesAllowed(true);
}
String Document::characterSetWithUTF8Fallback() const
{
AtomicString name = encoding();
if (!name.isNull())
return name;
return UTF8Encoding().domName();
}
String Document::defaultCharsetForLegacyBindings() const
{
if (!frame())
UTF8Encoding().domName();
return settings().defaultTextEncodingName();
}
void Document::setCharset(const String& charset)
{
if (!decoder())
return;
decoder()->setEncoding(charset, TextResourceDecoder::UserChosenEncoding);
}
void Document::setContentLanguage(const String& language)
{
if (m_contentLanguage == language)
return;
m_contentLanguage = language;
// Recalculate style so language is used when selecting the initial font.
m_styleScope->didChangeStyleSheetEnvironment();
}
ExceptionOr<void> Document::setXMLVersion(const String& version)
{
if (!XMLDocumentParser::supportsXMLVersion(version))
return Exception { NotSupportedError };
m_xmlVersion = version;
return { };
}
void Document::setXMLStandalone(bool standalone)
{
m_xmlStandalone = standalone ? Standalone : NotStandalone;
}
void Document::setDocumentURI(const String& uri)
{
// This property is read-only from JavaScript, but writable from Objective-C.
m_documentURI = uri;
updateBaseURL();
}
void Document::setContent(const String& content)
{
open();
// FIXME: This should probably use insert(), but that's (intentionally)
// not implemented for the XML parser as it's normally synonymous with
// document.write(). append() will end up yielding, but close() will
// pump the tokenizer syncrhonously and finish the parse.
m_parser->append(content.impl());
close();
}
String Document::suggestedMIMEType() const
{
if (isXHTMLDocument())
return ASCIILiteral("application/xhtml+xml");
if (isSVGDocument())
return ASCIILiteral("image/svg+xml");
if (xmlStandalone())
return ASCIILiteral("text/xml");
if (isHTMLDocument())
return ASCIILiteral("text/html");
if (DocumentLoader* loader = this->loader())
return loader->responseMIMEType();
return String();
}
void Document::overrideMIMEType(const String& mimeType)
{
m_overriddenMIMEType = mimeType;
}
String Document::contentType() const
{
if (!m_overriddenMIMEType.isNull())
return m_overriddenMIMEType;
if (DocumentLoader* documentLoader = loader())
return documentLoader->currentContentType();
String mimeType = suggestedMIMEType();
if (!mimeType.isNull())
return mimeType;
return ASCIILiteral("application/xml");
}
RefPtr<Range> Document::caretRangeFromPoint(int x, int y)
{
return caretRangeFromPoint(LayoutPoint(x, y));
}
RefPtr<Range> Document::caretRangeFromPoint(const LayoutPoint& clientPoint)
{
if (!hasLivingRenderTree())
return nullptr;
LayoutPoint localPoint;
Node* node = nodeFromPoint(clientPoint, &localPoint);
if (!node)
return nullptr;
RenderObject* renderer = node->renderer();
if (!renderer)
return nullptr;
Position rangeCompliantPosition = renderer->positionForPoint(localPoint).parentAnchoredEquivalent();
if (rangeCompliantPosition.isNull())
return nullptr;
unsigned offset = rangeCompliantPosition.offsetInContainerNode();
node = &retargetToScope(*rangeCompliantPosition.containerNode());
if (node != rangeCompliantPosition.containerNode())
offset = 0;
return Range::create(*this, node, offset, node, offset);
}
Element* Document::scrollingElement()
{
// FIXME: When we fix https://bugs.webkit.org/show_bug.cgi?id=106133, this should be replaced with the full implementation
// of Document.scrollingElement() as specified at http://dev.w3.org/csswg/cssom-view/#dom-document-scrollingelement.
return body();
}
template<typename CharacterType> static inline String canonicalizedTitle(Document& document, const String& title)
{
// FIXME: Compiling a separate copy of this for LChar and UChar is likely unnecessary.
// FIXME: Missing an optimized case for when title is fine as-is. This unnecessarily allocates
// and keeps around a new copy, and it's even the less optimal type of StringImpl with a separate buffer.
// Could probably just use StringBuilder instead.
auto* characters = title.characters<CharacterType>();
unsigned length = title.length();
StringBuffer<CharacterType> buffer { length };
unsigned bufferLength = 0;
auto* decoder = document.decoder();
auto backslashAsCurrencySymbol = decoder ? decoder->encoding().backslashAsCurrencySymbol() : '\\';
// Collapse runs of HTML spaces into single space characters.
// Strip leading and trailing spaces.
// Replace backslashes with currency symbols.
bool previousCharacterWasHTMLSpace = false;
for (unsigned i = 0; i < length; ++i) {
auto character = characters[i];
if (isHTMLSpace(character))
previousCharacterWasHTMLSpace = true;
else {
if (character == '\\')
character = backslashAsCurrencySymbol;
if (previousCharacterWasHTMLSpace && bufferLength)
buffer[bufferLength++] = ' ';
buffer[bufferLength++] = character;
previousCharacterWasHTMLSpace = false;
}
}
if (!bufferLength)
return { };
buffer.shrink(bufferLength);
return String::adopt(WTFMove(buffer));
}
void Document::updateTitle(const StringWithDirection& title)
{
if (m_rawTitle == title)
return;
m_rawTitle = title;
m_title = title;
if (!m_title.string.isEmpty()) {
if (m_title.string.is8Bit())
m_title.string = canonicalizedTitle<LChar>(*this, m_title.string);
else
m_title.string = canonicalizedTitle<UChar>(*this, m_title.string);
}
if (auto* loader = this->loader())
loader->setTitle(m_title);
}
void Document::updateTitleFromTitleElement()
{
if (!m_titleElement) {
updateTitle({ });
return;
}
if (is<HTMLTitleElement>(*m_titleElement))
updateTitle(downcast<HTMLTitleElement>(*m_titleElement).textWithDirection());
else if (is<SVGTitleElement>(*m_titleElement)) {
// FIXME: Does the SVG title element have a text direction?
updateTitle({ downcast<SVGTitleElement>(*m_titleElement).textContent(), LTR });
}
}
void Document::setTitle(const String& title)
{
if (!m_titleElement) {
if (isHTMLDocument() || isXHTMLDocument()) {
auto* headElement = head();
if (!headElement)
return;
m_titleElement = HTMLTitleElement::create(HTMLNames::titleTag, *this);
headElement->appendChild(*m_titleElement);
} else if (isSVGDocument()) {
auto* element = documentElement();
if (!is<SVGSVGElement>(element))
return;
m_titleElement = SVGTitleElement::create(SVGNames::titleTag, *this);
element->insertBefore(*m_titleElement, element->firstChild());
}
} else if (!isHTMLDocument() && !isXHTMLDocument() && !isSVGDocument()) {
// FIXME: What exactly is the point of this? This seems like a strange moment
// in time to demote something from being m_titleElement, when setting the
// value of the title attribute. Do we have test coverage for this?
m_titleElement = nullptr;
}
if (is<HTMLTitleElement>(m_titleElement.get()))
downcast<HTMLTitleElement>(*m_titleElement).setTextContent(title);
else if (is<SVGTitleElement>(m_titleElement.get()))
downcast<SVGTitleElement>(*m_titleElement).setTextContent(title);
else
updateTitle({ title, LTR });
}
template<typename> struct TitleTraits;
template<> struct TitleTraits<HTMLTitleElement> {
static bool isInEligibleLocation(HTMLTitleElement& element) { return element.isConnected() && !element.isInShadowTree(); }
static HTMLTitleElement* findTitleElement(Document& document) { return descendantsOfType<HTMLTitleElement>(document).first(); }
};
template<> struct TitleTraits<SVGTitleElement> {
static bool isInEligibleLocation(SVGTitleElement& element) { return element.parentNode() == element.document().documentElement(); }
static SVGTitleElement* findTitleElement(Document& document) { return childrenOfType<SVGTitleElement>(*document.documentElement()).first(); }
};
template<typename TitleElement> Element* selectNewTitleElement(Document& document, Element* oldTitleElement, Element& changingTitleElement)
{
using Traits = TitleTraits<TitleElement>;
if (!is<TitleElement>(changingTitleElement)) {
ASSERT(oldTitleElement == Traits::findTitleElement(document));
return oldTitleElement;
}
if (oldTitleElement)
return Traits::findTitleElement(document);
// Optimized common case: We have no title element yet.
// We can figure out which title element should be used without searching.
bool isEligible = Traits::isInEligibleLocation(downcast<TitleElement>(changingTitleElement));
auto* newTitleElement = isEligible ? &changingTitleElement : nullptr;
ASSERT(newTitleElement == Traits::findTitleElement(document));
return newTitleElement;
}
void Document::updateTitleElement(Element& changingTitleElement)
{
// Most documents use HTML title rules.
// Documents with SVG document elements use SVG title rules.
auto selectTitleElement = is<SVGSVGElement>(documentElement())
? selectNewTitleElement<SVGTitleElement> : selectNewTitleElement<HTMLTitleElement>;
auto newTitleElement = selectTitleElement(*this, m_titleElement.get(), changingTitleElement);
if (m_titleElement == newTitleElement)
return;
m_titleElement = newTitleElement;
updateTitleFromTitleElement();
}
void Document::titleElementAdded(Element& titleElement)
{
if (m_titleElement == &titleElement)
return;
updateTitleElement(titleElement);
}
void Document::titleElementRemoved(Element& titleElement)
{
if (m_titleElement != &titleElement)
return;
updateTitleElement(titleElement);
}
void Document::titleElementTextChanged(Element& titleElement)
{
if (m_titleElement != &titleElement)
return;
updateTitleFromTitleElement();
}
void Document::registerForVisibilityStateChangedCallbacks(VisibilityChangeClient* client)
{
m_visibilityStateCallbackClients.add(client);
}
void Document::unregisterForVisibilityStateChangedCallbacks(VisibilityChangeClient* client)
{
m_visibilityStateCallbackClients.remove(client);
}
void Document::visibilityStateChanged()
{
enqueueDocumentEvent(Event::create(eventNames().visibilitychangeEvent, false, false));
for (auto* client : m_visibilityStateCallbackClients)
client->visibilityStateChanged();
notifyMediaCaptureOfVisibilityChanged();
}
VisibilityState Document::visibilityState() const
{
// The visibility of the document is inherited from the visibility of the
// page. If there is no page associated with the document, we will assume
// that the page is hidden, as specified by the spec:
// http://dvcs.w3.org/hg/webperf/raw-file/tip/specs/PageVisibility/Overview.html#dom-document-hidden
if (!m_frame || !m_frame->page())
return VisibilityState::Hidden;
return m_frame->page()->visibilityState();
}
bool Document::hidden() const
{
return visibilityState() != VisibilityState::Visible;
}
#if ENABLE(VIDEO)
void Document::registerForAllowsMediaDocumentInlinePlaybackChangedCallbacks(HTMLMediaElement& element)
{
m_allowsMediaDocumentInlinePlaybackElements.add(&element);
}
void Document::unregisterForAllowsMediaDocumentInlinePlaybackChangedCallbacks(HTMLMediaElement& element)
{
m_allowsMediaDocumentInlinePlaybackElements.remove(&element);
}
void Document::allowsMediaDocumentInlinePlaybackChanged()
{
for (auto* element : m_allowsMediaDocumentInlinePlaybackElements)
element->allowsMediaDocumentInlinePlaybackChanged();
}
#endif
String Document::nodeName() const
{
return ASCIILiteral("#document");
}
Node::NodeType Document::nodeType() const
{
return DOCUMENT_NODE;
}
FormController& Document::formController()
{
if (!m_formController)
m_formController = std::make_unique<FormController>();
return *m_formController;
}
Vector<String> Document::formElementsState() const
{
if (!m_formController)
return Vector<String>();
return m_formController->formElementsState();
}
void Document::setStateForNewFormElements(const Vector<String>& stateVector)
{
if (!stateVector.size() && !m_formController)
return;
formController().setStateForNewFormElements(stateVector);
}
FrameView* Document::view() const
{
return m_frame ? m_frame->view() : nullptr;
}
Page* Document::page() const
{
return m_frame ? m_frame->page() : nullptr;
}
Ref<Range> Document::createRange()
{
return Range::create(*this);
}
Ref<NodeIterator> Document::createNodeIterator(Node& root, unsigned long whatToShow, RefPtr<NodeFilter>&& filter, bool)
{
return NodeIterator::create(root, whatToShow, WTFMove(filter));
}
Ref<TreeWalker> Document::createTreeWalker(Node& root, unsigned long whatToShow, RefPtr<NodeFilter>&& filter, bool)
{
return TreeWalker::create(root, whatToShow, WTFMove(filter));
}
void Document::scheduleForcedStyleRecalc()
{
m_pendingStyleRecalcShouldForce = true;
scheduleStyleRecalc();
}
void Document::scheduleStyleRecalc()
{
ASSERT(!m_renderView || !m_renderView->inHitTesting());
if (m_styleRecalcTimer.isActive() || pageCacheState() != NotInPageCache)
return;
ASSERT(childNeedsStyleRecalc() || m_pendingStyleRecalcShouldForce);
// FIXME: Why on earth is this here? This is clearly misplaced.
invalidateAccessKeyMap();
m_styleRecalcTimer.startOneShot(0_s);
InspectorInstrumentation::didScheduleStyleRecalculation(*this);
}
void Document::unscheduleStyleRecalc()
{
ASSERT(!childNeedsStyleRecalc());
m_styleRecalcTimer.stop();
m_pendingStyleRecalcShouldForce = false;
}
bool Document::hasPendingStyleRecalc() const
{
return m_styleRecalcTimer.isActive() && !m_inStyleRecalc;
}
bool Document::hasPendingForcedStyleRecalc() const
{
return m_styleRecalcTimer.isActive() && m_pendingStyleRecalcShouldForce;
}
void Document::resolveStyle(ResolveStyleType type)
{
ASSERT(!view() || !view()->isPainting());
// NOTE: XSL code seems to be the only client stumbling in here without a RenderView.
if (!m_renderView)
return;
FrameView& frameView = m_renderView->frameView();
Ref<FrameView> protect(frameView);
if (frameView.isPainting())
return;
if (m_inStyleRecalc)
return; // Guard against re-entrancy. -dwh
TraceScope tracingScope(StyleRecalcStart, StyleRecalcEnd);
RenderView::RepaintRegionAccumulator repaintRegionAccumulator(renderView());
AnimationUpdateBlock animationUpdateBlock(&m_frame->animation());
// FIXME: Do this update per tree scope.
{
auto elements = copyToVectorOf<RefPtr<SVGUseElement>>(m_svgUseElements);
// We can't clear m_svgUseElements here because updateShadowTree may end up executing arbitrary scripts
// which may insert new SVG use elements or remove existing ones inside sync IPC via ImageLoader::updateFromElement.
for (auto& element : elements)
element->updateShadowTree();
}
// FIXME: We should update style on our ancestor chain before proceeding (especially for seamless),
// however doing so currently causes several tests to crash, as Frame::setDocument calls Document::attach
// before setting the DOMWindow on the Frame, or the SecurityOrigin on the document. The attach, in turn
// resolves style (here) and then when we resolve style on the parent chain, we may end up
// re-attaching our containing iframe, which when asked HTMLFrameElementBase::isURLAllowed
// hits a null-dereference due to security code always assuming the document has a SecurityOrigin.
{
ScriptDisallowedScope::InMainThread scriptDisallowedScope;
styleScope().flushPendingUpdate();
frameView.willRecalcStyle();
}
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willRecalculateStyle(*this);
bool updatedCompositingLayers = false;
{
Style::PostResolutionCallbackDisabler disabler(*this);
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
ScriptDisallowedScope::InMainThread scriptDisallowedScope;
m_inStyleRecalc = true;
if (m_pendingStyleRecalcShouldForce)
type = ResolveStyleType::Rebuild;
if (type == ResolveStyleType::Rebuild) {
// This may get set again during style resolve.
m_hasNodesWithNonFinalStyle = false;
m_hasNodesWithMissingStyle = false;
auto documentStyle = Style::resolveForDocument(*this);
// Inserting the pictograph font at the end of the font fallback list is done by the
// font selector, so set a font selector if needed.
if (settings().fontFallbackPrefersPictographs())
documentStyle.fontCascade().update(&fontSelector());
auto documentChange = Style::determineChange(documentStyle, m_renderView->style());
if (documentChange != Style::NoChange)
renderView()->setStyle(WTFMove(documentStyle));
if (auto* documentElement = this->documentElement())
documentElement->invalidateStyleForSubtree();
}
Style::TreeResolver resolver(*this);
auto styleUpdate = resolver.resolve();
m_lastStyleUpdateSizeForTesting = styleUpdate ? styleUpdate->size() : 0;
setHasValidStyle();
clearChildNeedsStyleRecalc();
unscheduleStyleRecalc();
m_inStyleRecalc = false;
if (styleUpdate) {
SetForScope<bool> inRenderTreeUpdate(m_inRenderTreeUpdate, true);
RenderTreeUpdater updater(*this);
updater.commit(WTFMove(styleUpdate));
frameView.styleDidChange();
}
updatedCompositingLayers = frameView.updateCompositingLayersAfterStyleChange();
if (m_renderView->needsLayout())
frameView.layoutContext().scheduleLayout();
// Usually this is handled by post-layout.
if (!frameView.needsLayout())
frameView.frame().selection().scheduleAppearanceUpdateAfterStyleChange();
// As a result of the style recalculation, the currently hovered element might have been
// detached (for example, by setting display:none in the :hover style), schedule another mouseMove event
// to check if any other elements ended up under the mouse pointer due to re-layout.
if (m_hoveredElement && !m_hoveredElement->renderer())
frameView.frame().mainFrame().eventHandler().dispatchFakeMouseMoveEventSoon();
++m_styleRecalcCount;
// FIXME: Assert ASSERT(!needsStyleRecalc()) here. Do we still have some cases where it's not true?
}
// If we wanted to call implicitClose() during recalcStyle, do so now that we're finished.
if (m_closeAfterStyleRecalc) {
m_closeAfterStyleRecalc = false;
implicitClose();
}
InspectorInstrumentation::didRecalculateStyle(cookie);
// Some animated images may now be inside the viewport due to style recalc,
// resume them if necessary if there is no layout pending. Otherwise, we'll
// check if they need to be resumed after layout.
if (updatedCompositingLayers && !frameView.needsLayout())
frameView.viewportContentsChanged();
if (m_gotoAnchorNeededAfterStylesheetsLoad && !styleScope().hasPendingSheets())
frameView.scrollToFragment(m_url);
}
void Document::updateTextRenderer(Text& text, unsigned offsetOfReplacedText, unsigned lengthOfReplacedText)
{
ASSERT(!m_inRenderTreeUpdate);
SetForScope<bool> inRenderTreeUpdate(m_inRenderTreeUpdate, true);
auto textUpdate = std::make_unique<Style::Update>(*this);
textUpdate->addText(text, { offsetOfReplacedText, lengthOfReplacedText, std::nullopt });
RenderTreeUpdater renderTreeUpdater(*this);
renderTreeUpdater.commit(WTFMove(textUpdate));
}
bool Document::needsStyleRecalc() const
{
if (pageCacheState() != NotInPageCache)
return false;
if (m_pendingStyleRecalcShouldForce)
return true;
if (childNeedsStyleRecalc())
return true;
if (styleScope().hasPendingUpdate())
return true;
// Ensure this happens eventually as it is currently in resolveStyle. This can be removed if the code moves.
if (m_gotoAnchorNeededAfterStylesheetsLoad && !styleScope().hasPendingSheets())
return true;
return false;
}
static bool isSafeToUpdateStyleOrLayout(const Document& document)
{
bool isSafeToExecuteScript = ScriptDisallowedScope::InMainThread::isScriptAllowed();
auto* frameView = document.view();
bool isInFrameFlattening = frameView && frameView->isInChildFrameWithFrameFlattening();
bool isAssertionDisabled = ScriptDisallowedScope::LayoutAssertionDisableScope::shouldDisable();
return isSafeToExecuteScript || isInFrameFlattening || !isInWebProcess() || isAssertionDisabled;
}
bool Document::updateStyleIfNeeded()
{
RefPtr<FrameView> frameView = view();
{
ScriptDisallowedScope::InMainThread scriptDisallowedScope;
ASSERT(isMainThread());
ASSERT(!frameView || !frameView->isPainting());
if (!frameView || frameView->layoutContext().isInRenderTreeLayout())
return false;
styleScope().flushPendingUpdate();
if (!needsStyleRecalc())
return false;
}
// The early exit above for !needsStyleRecalc() is needed when updateWidgetPositions() is called in runOrScheduleAsynchronousTasks().
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(isSafeToUpdateStyleOrLayout(*this));
resolveStyle();
return true;
}
void Document::updateLayout()
{
ASSERT(isMainThread());
RefPtr<FrameView> frameView = view();
if (frameView && frameView->layoutContext().isInRenderTreeLayout()) {
// View layout should not be re-entrant.
ASSERT_NOT_REACHED();
return;
}
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(isSafeToUpdateStyleOrLayout(*this));
RenderView::RepaintRegionAccumulator repaintRegionAccumulator(renderView());
if (HTMLFrameOwnerElement* owner = ownerElement())
owner->document().updateLayout();
updateStyleIfNeeded();
StackStats::LayoutCheckPoint layoutCheckPoint;
// Only do a layout if changes have occurred that make it necessary.
if (frameView && renderView() && (frameView->layoutContext().isLayoutPending() || renderView()->needsLayout()))
frameView->layoutContext().layout();
}
void Document::updateLayoutIgnorePendingStylesheets(Document::RunPostLayoutTasks runPostLayoutTasks)
{
bool oldIgnore = m_ignorePendingStylesheets;
if (!haveStylesheetsLoaded()) {
m_ignorePendingStylesheets = true;
// FIXME: This should just invalidate elements with missing styles.
if (m_hasNodesWithMissingStyle)
scheduleForcedStyleRecalc();
}
updateLayout();
if (runPostLayoutTasks == RunPostLayoutTasks::Synchronously && view())
view()->flushAnyPendingPostLayoutTasks();
m_ignorePendingStylesheets = oldIgnore;
}
std::unique_ptr<RenderStyle> Document::styleForElementIgnoringPendingStylesheets(Element& element, const RenderStyle* parentStyle, PseudoId pseudoElementSpecifier)
{
ASSERT(&element.document() == this);
ASSERT(!element.isPseudoElement() || !pseudoElementSpecifier);
ASSERT(!pseudoElementSpecifier || parentStyle);
// On iOS request delegates called during styleForElement may result in re-entering WebKit and killing the style resolver.
Style::PostResolutionCallbackDisabler disabler(*this);
SetForScope<bool> change(m_ignorePendingStylesheets, true);
auto& resolver = element.styleResolver();
if (pseudoElementSpecifier)
return resolver.pseudoStyleForElement(element, PseudoStyleRequest(pseudoElementSpecifier), *parentStyle);
auto elementStyle = resolver.styleForElement(element, parentStyle);
if (elementStyle.relations) {
Style::Update emptyUpdate(*this);
Style::commitRelations(WTFMove(elementStyle.relations), emptyUpdate);
}
return WTFMove(elementStyle.renderStyle);
}
bool Document::updateLayoutIfDimensionsOutOfDate(Element& element, DimensionsCheck dimensionsCheck)
{
ASSERT(isMainThread());
// If the stylesheets haven't loaded, just give up and do a full layout ignoring pending stylesheets.
if (!haveStylesheetsLoaded()) {
updateLayoutIgnorePendingStylesheets();
return true;
}
// Check for re-entrancy and assert (same code that is in updateLayout()).
RefPtr<FrameView> frameView = view();
if (frameView && frameView->layoutContext().isInRenderTreeLayout()) {
// View layout should not be re-entrant.
ASSERT_NOT_REACHED();
return true;
}
RenderView::RepaintRegionAccumulator repaintRegionAccumulator(renderView());
// Mimic the structure of updateLayout(), but at each step, see if we have been forced into doing a full
// layout.
bool requireFullLayout = false;
if (HTMLFrameOwnerElement* owner = ownerElement()) {
if (owner->document().updateLayoutIfDimensionsOutOfDate(*owner))
requireFullLayout = true;
}
updateStyleIfNeeded();
RenderObject* renderer = element.renderer();
if (!renderer || renderer->needsLayout()) {
// If we don't have a renderer or if the renderer needs layout for any reason, give up.
requireFullLayout = true;
}
// Turn off this optimization for input elements with shadow content.
if (is<HTMLInputElement>(element))
requireFullLayout = true;
bool isVertical = renderer && !renderer->isHorizontalWritingMode();
bool checkingLogicalWidth = ((dimensionsCheck & WidthDimensionsCheck) && !isVertical) || ((dimensionsCheck & HeightDimensionsCheck) && isVertical);
bool checkingLogicalHeight = ((dimensionsCheck & HeightDimensionsCheck) && !isVertical) || ((dimensionsCheck & WidthDimensionsCheck) && isVertical);
bool hasSpecifiedLogicalHeight = renderer && renderer->style().logicalMinHeight() == Length(0, Fixed) && renderer->style().logicalHeight().isFixed() && renderer->style().logicalMaxHeight().isAuto();
if (!requireFullLayout) {
RenderBox* previousBox = nullptr;
RenderBox* currentBox = nullptr;
// Check our containing block chain. If anything in the chain needs a layout, then require a full layout.
for (RenderObject* currRenderer = element.renderer(); currRenderer && !currRenderer->isRenderView(); currRenderer = currRenderer->container()) {
// Require the entire container chain to be boxes.
if (!is<RenderBox>(currRenderer)) {
requireFullLayout = true;
break;
}
previousBox = currentBox;
currentBox = downcast<RenderBox>(currRenderer);
// If a box needs layout for itself or if a box has changed children and sizes its width to
// its content, then require a full layout.
if (currentBox->selfNeedsLayout() ||
(checkingLogicalWidth && currRenderer->needsLayout() && currentBox->sizesLogicalWidthToFitContent(MainOrPreferredSize))) {
requireFullLayout = true;
break;
}
// If a block contains floats and the child's height isn't specified, then
// give up also, since our height could end up being influenced by the floats.
if (checkingLogicalHeight && !hasSpecifiedLogicalHeight && currentBox->isRenderBlockFlow()) {
RenderBlockFlow* currentBlockFlow = downcast<RenderBlockFlow>(currentBox);
if (currentBlockFlow->containsFloats() && previousBox && !previousBox->isFloatingOrOutOfFlowPositioned()) {
requireFullLayout = true;
break;
}
}
if (!currentBox->isRenderBlockFlow() || currentBox->enclosingFragmentedFlow() || currentBox->isWritingModeRoot()) {
// FIXME: For now require only block flows all the way back to the root. This limits the optimization
// for now, and we'll expand it in future patches to apply to more and more scenarios.
// Disallow columns from having the optimization.
// Give up if the writing mode changes at all in the containing block chain.
requireFullLayout = true;
break;
}
if (currRenderer == frameView->layoutContext().subtreeLayoutRoot())
break;
}
}
StackStats::LayoutCheckPoint layoutCheckPoint;
// Only do a layout if changes have occurred that make it necessary.
if (requireFullLayout && frameView && renderView() && (frameView->layoutContext().isLayoutPending() || renderView()->needsLayout()))
frameView->layoutContext().layout();
return requireFullLayout;
}
bool Document::isPageBoxVisible(int pageIndex)
{
updateStyleIfNeeded();
std::unique_ptr<RenderStyle> pageStyle(styleScope().resolver().styleForPage(pageIndex));
return pageStyle->visibility() != HIDDEN; // display property doesn't apply to @page.
}
void Document::pageSizeAndMarginsInPixels(int pageIndex, IntSize& pageSize, int& marginTop, int& marginRight, int& marginBottom, int& marginLeft)
{
updateStyleIfNeeded();
auto style = styleScope().resolver().styleForPage(pageIndex);
int width = pageSize.width();
int height = pageSize.height();
switch (style->pageSizeType()) {
case PAGE_SIZE_AUTO:
break;
case PAGE_SIZE_AUTO_LANDSCAPE:
if (width < height)
std::swap(width, height);
break;
case PAGE_SIZE_AUTO_PORTRAIT:
if (width > height)
std::swap(width, height);
break;
case PAGE_SIZE_RESOLVED: {
auto& size = style->pageSize();
ASSERT(size.width.isFixed());
ASSERT(size.height.isFixed());
width = valueForLength(size.width, 0);
height = valueForLength(size.height, 0);
break;
}
default:
ASSERT_NOT_REACHED();
}
pageSize = IntSize(width, height);
// The percentage is calculated with respect to the width even for margin top and bottom.
// http://www.w3.org/TR/CSS2/box.html#margin-properties
marginTop = style->marginTop().isAuto() ? marginTop : intValueForLength(style->marginTop(), width);
marginRight = style->marginRight().isAuto() ? marginRight : intValueForLength(style->marginRight(), width);
marginBottom = style->marginBottom().isAuto() ? marginBottom : intValueForLength(style->marginBottom(), width);
marginLeft = style->marginLeft().isAuto() ? marginLeft : intValueForLength(style->marginLeft(), width);
}
StyleResolver& Document::userAgentShadowTreeStyleResolver()
{
if (!m_userAgentShadowTreeStyleResolver)
m_userAgentShadowTreeStyleResolver = std::make_unique<StyleResolver>(*this);
return *m_userAgentShadowTreeStyleResolver;
}
void Document::fontsNeedUpdate(FontSelector&)
{
invalidateMatchedPropertiesCacheAndForceStyleRecalc();
}
void Document::invalidateMatchedPropertiesCacheAndForceStyleRecalc()
{
if (auto* resolver = styleScope().resolverIfExists())
resolver->invalidateMatchedPropertiesCache();
if (pageCacheState() != NotInPageCache || !renderView())
return;
scheduleForcedStyleRecalc();
}
void Document::didClearStyleResolver()
{
m_userAgentShadowTreeStyleResolver = nullptr;
}
void Document::createRenderTree()
{
ASSERT(!renderView());
ASSERT(m_pageCacheState != InPageCache);
ASSERT(!m_axObjectCache || this != &topDocument());
if (m_isNonRenderedPlaceholder)
return;
// FIXME: It would be better if we could pass the resolved document style directly here.
m_renderView = createRenderer<RenderView>(*this, RenderStyle::create());
Node::setRenderer(m_renderView.get());
renderView()->setIsInWindow(true);
resolveStyle(ResolveStyleType::Rebuild);
}
void Document::didBecomeCurrentDocumentInFrame()
{
// FIXME: Are there cases where the document can be dislodged from the frame during the event handling below?
// If so, then m_frame could become 0, and we need to do something about that.
m_frame->script().updateDocument();
if (!hasLivingRenderTree())
createRenderTree();
updateViewportArguments();
// FIXME: Doing this only for the main frame is insufficient.
// Changing a subframe can also change the wheel event handler count.
// FIXME: Doing this only when a document goes into the frame is insufficient.
// Removing a document can also change the wheel event handler count.
// FIXME: Doing this every time is a waste. If the current document and its
// subframes' documents have no wheel event handlers, then the count did not change,
// unless the documents they are replacing had wheel event handlers.
if (page() && m_frame->isMainFrame())
wheelEventHandlersChanged();
// Ensure that the scheduled task state of the document matches the DOM suspension state of the frame. It can
// be out of sync if the DOM suspension state changed while the document was not in the frame (possibly in the
// page cache, or simply newly created).
if (m_frame->activeDOMObjectsAndAnimationsSuspended()) {
if (RuntimeEnabledFeatures::sharedFeatures().cssAnimationsAndCSSTransitionsBackedByWebAnimationsEnabled())
timeline().suspendAnimations();
else
m_frame->animation().suspendAnimationsForDocument(this);
suspendScheduledTasks(ActiveDOMObject::PageWillBeSuspended);
} else {
resumeScheduledTasks(ActiveDOMObject::PageWillBeSuspended);
if (RuntimeEnabledFeatures::sharedFeatures().cssAnimationsAndCSSTransitionsBackedByWebAnimationsEnabled())
timeline().resumeAnimations();
else
m_frame->animation().resumeAnimationsForDocument(this);
}
}
void Document::frameDestroyed()
{
// detachFromFrame() must be called before destroying the Frame.
RELEASE_ASSERT(!m_frame);
FrameDestructionObserver::frameDestroyed();
}
void Document::attachToCachedFrame(CachedFrameBase& cachedFrame)
{
RELEASE_ASSERT(cachedFrame.document() == this);
ASSERT(cachedFrame.view());
ASSERT(m_pageCacheState == Document::InPageCache);
observeFrame(&cachedFrame.view()->frame());
}
void Document::detachFromCachedFrame(CachedFrameBase& cachedFrame)
{
ASSERT_UNUSED(cachedFrame, cachedFrame.view());
RELEASE_ASSERT(cachedFrame.document() == this);
ASSERT(m_frame == &cachedFrame.view()->frame());
ASSERT(m_pageCacheState == Document::InPageCache);
detachFromFrame();
}
void Document::destroyRenderTree()
{
ASSERT(hasLivingRenderTree());
ASSERT(frame());
ASSERT(frame()->document() == this);
ASSERT(page());
// Prevent Widget tree changes from committing until the RenderView is dead and gone.
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
SetForScope<bool> change(m_renderTreeBeingDestroyed, true);
if (this == &topDocument())
clearAXObjectCache();
documentWillBecomeInactive();
if (view())
view()->willDestroyRenderTree();
if (m_documentElement)
RenderTreeUpdater::tearDownRenderers(*m_documentElement);
clearChildNeedsStyleRecalc();
unscheduleStyleRecalc();
// FIXME: RenderObject::view() uses m_renderView and we can't null it before destruction is completed
{
RenderTreeBuilder builder(*m_renderView);
// FIXME: This is a workaround for leftover content (see webkit.org/b/182547).
while (m_renderView->firstChild())
builder.destroy(*m_renderView->firstChild());
m_renderView->destroy();
}
m_renderView.release();
Node::setRenderer(nullptr);
#if ENABLE(TEXT_AUTOSIZING)
m_textAutoSizing = nullptr;
#endif
if (view())
view()->didDestroyRenderTree();
}
void Document::prepareForDestruction()
{
if (m_hasPreparedForDestruction)
return;
if (m_timeline) {
m_timeline->detachFromDocument();
m_timeline = nullptr;
}
if (m_frame)
m_frame->animation().detachFromDocument(this);
#if USE(LIBWEBRTC)
// FIXME: This should be moved to Modules/mediastream.
if (LibWebRTCProvider::webRTCAvailable()) {
if (auto* page = this->page())
page->libWebRTCProvider().unregisterMDNSNames(identifier().toUInt64());
}
#endif
#if ENABLE(SERVICE_WORKER)
setActiveServiceWorker(nullptr);
setServiceWorkerConnection(nullptr);
#endif
#if ENABLE(IOS_TOUCH_EVENTS)
clearTouchEventHandlersAndListeners();
#endif
#if HAVE(ACCESSIBILITY)
if (this != &topDocument()) {
// Let the ax cache know that this subframe goes out of scope.
if (auto* cache = existingAXObjectCache())
cache->prepareForDocumentDestruction(*this);
}
#endif
{
NavigationDisabler navigationDisabler(m_frame);
disconnectDescendantFrames();
}
if (m_domWindow && m_frame)
m_domWindow->willDetachDocumentFromFrame();
styleScope().clearResolver();
if (hasLivingRenderTree())
destroyRenderTree();
if (is<PluginDocument>(*this))
downcast<PluginDocument>(*this).detachFromPluginElement();
#if ENABLE(POINTER_LOCK)
if (page())
page()->pointerLockController().documentDetached(*this);
#endif
if (auto* page = this->page()) {
if (auto* validationMessageClient = page->validationMessageClient())
validationMessageClient->documentDetached(*this);
}
InspectorInstrumentation::documentDetached(*this);
stopActiveDOMObjects();
m_eventQueue.close();
#if ENABLE(FULLSCREEN_API)
m_fullScreenChangeEventTargetQueue.clear();
m_fullScreenErrorEventTargetQueue.clear();
#endif
commonTeardown();
#if ENABLE(TOUCH_EVENTS)
if (m_touchEventTargets && m_touchEventTargets->size() && parentDocument())
parentDocument()->didRemoveEventTargetNode(*this);
#endif
if (m_wheelEventTargets && m_wheelEventTargets->size() && parentDocument())
parentDocument()->didRemoveEventTargetNode(*this);
if (m_mediaQueryMatcher)
m_mediaQueryMatcher->documentDestroyed();
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
if (!m_clientToIDMap.isEmpty() && page()) {
for (auto* client : copyToVector(m_clientToIDMap.keys()))
removePlaybackTargetPickerClient(*client);
}
#endif
m_cachedResourceLoader->stopUnusedPreloadsTimer();
if (page() && m_mediaState != MediaProducer::IsNotPlaying) {
m_mediaState = MediaProducer::IsNotPlaying;
page()->updateIsPlayingMedia(HTMLMediaElementInvalidID);
}
detachFromFrame();
m_hasPreparedForDestruction = true;
// Note that m_pageCacheState can be Document::AboutToEnterPageCache if our frame
// was removed in an onpagehide event handler fired when the top-level frame is
// about to enter the page cache.
RELEASE_ASSERT(m_pageCacheState != Document::InPageCache);
}
void Document::removeAllEventListeners()
{
EventTarget::removeAllEventListeners();
if (m_domWindow)
m_domWindow->removeAllEventListeners();
#if ENABLE(IOS_TOUCH_EVENTS)
clearTouchEventHandlersAndListeners();
#endif
for (Node* node = firstChild(); node; node = NodeTraversal::next(*node))
node->removeAllEventListeners();
#if ENABLE(TOUCH_EVENTS)
m_touchEventTargets = nullptr;
#endif
m_wheelEventTargets = nullptr;
}
void Document::suspendDeviceMotionAndOrientationUpdates()
{
if (m_areDeviceMotionAndOrientationUpdatesSuspended)
return;
m_areDeviceMotionAndOrientationUpdatesSuspended = true;
#if ENABLE(DEVICE_ORIENTATION) && PLATFORM(IOS)
if (m_deviceMotionController)
m_deviceMotionController->suspendUpdates();
if (m_deviceOrientationController)
m_deviceOrientationController->suspendUpdates();
#endif
}
void Document::resumeDeviceMotionAndOrientationUpdates()
{
if (!m_areDeviceMotionAndOrientationUpdatesSuspended)
return;
m_areDeviceMotionAndOrientationUpdatesSuspended = false;
#if ENABLE(DEVICE_ORIENTATION) && PLATFORM(IOS)
if (m_deviceMotionController)
m_deviceMotionController->resumeUpdates();
if (m_deviceOrientationController)
m_deviceOrientationController->resumeUpdates();
#endif
}
bool Document::shouldBypassMainWorldContentSecurityPolicy() const
{
// Bypass this policy when the world is known, and it not the normal world.
auto& callFrame = *commonVM().topCallFrame;
return &callFrame != JSC::CallFrame::noCaller() && !currentWorld(callFrame).isNormal();
}
void Document::platformSuspendOrStopActiveDOMObjects()
{
#if PLATFORM(IOS)
if (WebThreadCountOfObservedContentModifiers() > 0) {
if (auto* frame = this->frame()) {
if (auto* page = frame->page())
page->chrome().client().clearContentChangeObservers(*frame);
}
}
#endif
}
void Document::suspendActiveDOMObjects(ActiveDOMObject::ReasonForSuspension why)
{
ScriptExecutionContext::suspendActiveDOMObjects(why);
suspendDeviceMotionAndOrientationUpdates();
platformSuspendOrStopActiveDOMObjects();
}
void Document::resumeActiveDOMObjects(ActiveDOMObject::ReasonForSuspension why)
{
ScriptExecutionContext::resumeActiveDOMObjects(why);
resumeDeviceMotionAndOrientationUpdates();
// FIXME: For iOS, do we need to add content change observers that were removed in Document::suspendActiveDOMObjects()?
}
void Document::stopActiveDOMObjects()
{
ScriptExecutionContext::stopActiveDOMObjects();
platformSuspendOrStopActiveDOMObjects();
}
void Document::clearAXObjectCache()
{
ASSERT(&topDocument() == this);
// Clear the cache member variable before calling delete because attempts
// are made to access it during destruction.
m_axObjectCache = nullptr;
}
AXObjectCache* Document::existingAXObjectCacheSlow() const
{
ASSERT(hasEverCreatedAnAXObjectCache);
return topDocument().m_axObjectCache.get();
}
AXObjectCache* Document::axObjectCache() const
{
if (!AXObjectCache::accessibilityEnabled())
return nullptr;
// The only document that actually has a AXObjectCache is the top-level
// document. This is because we need to be able to get from any WebCoreAXObject
// to any other WebCoreAXObject on the same page. Using a single cache allows
// lookups across nested webareas (i.e. multiple documents).
Document& topDocument = this->topDocument();
// If the document has already been detached, do not make a new axObjectCache.
if (!topDocument.hasLivingRenderTree())
return nullptr;
ASSERT(&topDocument == this || !m_axObjectCache);
if (!topDocument.m_axObjectCache) {
topDocument.m_axObjectCache = std::make_unique<AXObjectCache>(topDocument);
hasEverCreatedAnAXObjectCache = true;
}
return topDocument.m_axObjectCache.get();
}
void Document::setVisuallyOrdered()
{
m_visuallyOrdered = true;
if (renderView())
renderView()->mutableStyle().setRTLOrdering(VisualOrder);
}
Ref<DocumentParser> Document::createParser()
{
// FIXME: this should probably pass the frame instead
return XMLDocumentParser::create(*this, view());
}
ScriptableDocumentParser* Document::scriptableDocumentParser() const
{
return parser() ? parser()->asScriptableDocumentParser() : nullptr;
}
ExceptionOr<RefPtr<WindowProxy>> Document::openForBindings(DOMWindow& activeWindow, DOMWindow& firstWindow, const String& url, const AtomicString& name, const String& features)
{
if (!m_domWindow)
return Exception { InvalidAccessError };
return m_domWindow->open(activeWindow, firstWindow, url, name, features);
}
// FIXME: Add support for the 'type' and 'replace' parameters.
ExceptionOr<Document&> Document::openForBindings(Document* responsibleDocument, const String&, const String&)
{
if (!isHTMLDocument())
return Exception { InvalidStateError };
// FIXME: This should also throw if "document's throw-on-dynamic-markup-insertion counter is greater than 0".
open(responsibleDocument);
return *this;
}
void Document::open(Document* responsibleDocument)
{
if (m_ignoreOpensDuringUnloadCount)
return;
if (responsibleDocument) {
setURL(responsibleDocument->url());
setCookieURL(responsibleDocument->cookieURL());
setSecurityOriginPolicy(responsibleDocument->securityOriginPolicy());
}
if (m_frame) {
if (ScriptableDocumentParser* parser = scriptableDocumentParser()) {
if (parser->isParsing()) {
// FIXME: HTML5 doesn't tell us to check this, it might not be correct.
if (parser->isExecutingScript())
return;
if (!parser->wasCreatedByScript() && parser->hasInsertionPoint())
return;
}
}
if (m_frame->loader().policyChecker().delegateIsDecidingNavigationPolicy())
m_frame->loader().policyChecker().stopCheck();
if (m_frame->loader().state() == FrameStateProvisional)
m_frame->loader().stopAllLoaders();
}
removeAllEventListeners();
implicitOpen();
if (ScriptableDocumentParser* parser = scriptableDocumentParser())
parser->setWasCreatedByScript(true);
if (m_frame)
m_frame->loader().didExplicitOpen();
}
void Document::detachParser()
{
if (!m_parser)
return;
m_parser->detach();
m_parser = nullptr;
}
void Document::cancelParsing()
{
if (!m_parser)
return;
// We have to clear the parser to avoid possibly triggering
// the onload handler when closing as a side effect of a cancel-style
// change, such as opening a new document or closing the window while
// still parsing
detachParser();
explicitClose();
}
void Document::implicitOpen()
{
removeChildren();
setCompatibilityMode(DocumentCompatibilityMode::NoQuirksMode);
cancelParsing();
m_parser = createParser();
setParsing(true);
setReadyState(Loading);
}
HTMLBodyElement* Document::body() const
{
auto* element = documentElement();
if (!element)
return nullptr;
return childrenOfType<HTMLBodyElement>(*element).first();
}
HTMLElement* Document::bodyOrFrameset() const
{
// Return the first body or frameset child of the html element.
auto* element = documentElement();
if (!is<HTMLHtmlElement>(element))
return nullptr;
for (auto& child : childrenOfType<HTMLElement>(*element)) {
if (is<HTMLBodyElement>(child) || is<HTMLFrameSetElement>(child))
return &child;
}
return nullptr;
}
ExceptionOr<void> Document::setBodyOrFrameset(RefPtr<HTMLElement>&& newBody)
{
if (!is<HTMLBodyElement>(newBody) && !is<HTMLFrameSetElement>(newBody))
return Exception { HierarchyRequestError };
auto* currentBody = bodyOrFrameset();
if (newBody == currentBody)
return { };
if (!m_documentElement)
return Exception { HierarchyRequestError };
if (currentBody)
return m_documentElement->replaceChild(*newBody, *currentBody);
return m_documentElement->appendChild(*newBody);
}
Location* Document::location() const
{
auto* window = domWindow();
if (!window)
return nullptr;
return window->location();
}
HTMLHeadElement* Document::head()
{
if (auto element = documentElement())
return childrenOfType<HTMLHeadElement>(*element).first();
return nullptr;
}
ExceptionOr<void> Document::closeForBindings()
{
// FIXME: We should follow the specification more closely:
// http://www.whatwg.org/specs/web-apps/current-work/#dom-document-close
if (!isHTMLDocument())
return Exception { InvalidStateError };
// FIXME: This should also throw if "document's throw-on-dynamic-markup-insertion counter is greater than 0".
close();
return { };
}
void Document::close()
{
if (!scriptableDocumentParser() || !scriptableDocumentParser()->wasCreatedByScript() || !scriptableDocumentParser()->isParsing())
return;
explicitClose();
}
void Document::explicitClose()
{
if (RefPtr<DocumentParser> parser = m_parser)
parser->finish();
if (!m_frame) {
// Because we have no frame, we don't know if all loading has completed,
// so we just call implicitClose() immediately. FIXME: This might fire
// the load event prematurely <http://bugs.webkit.org/show_bug.cgi?id=14568>.
implicitClose();
return;
}
checkCompleted();
}
void Document::implicitClose()
{
// If we're in the middle of recalcStyle, we need to defer the close until the style information is accurate and all elements are re-attached.
if (m_inStyleRecalc) {
m_closeAfterStyleRecalc = true;
return;
}
bool wasLocationChangePending = frame() && frame()->navigationScheduler().locationChangePending();
bool doload = !parsing() && m_parser && !m_processingLoadEvent && !wasLocationChangePending;
if (!doload)
return;
// Call to dispatchWindowLoadEvent can blow us from underneath.
Ref<Document> protectedThis(*this);
m_processingLoadEvent = true;
ScriptableDocumentParser* parser = scriptableDocumentParser();
m_wellFormed = parser && parser->wellFormed();
// We have to clear the parser, in case someone document.write()s from the
// onLoad event handler, as in Radar 3206524.
detachParser();
// FIXME: We kick off the icon loader when the Document is done parsing.
// There are earlier opportunities we could start it:
// -When the <head> finishes parsing
// -When any new HTMLLinkElement is inserted into the document
// But those add a dynamic component to the favicon that has UI
// ramifications, and we need to decide what is the Right Thing To Do(tm)
RefPtr<Frame> f = frame();
if (f) {
#if ENABLE(XSLT)
// Apply XSL transforms before load events so that event handlers can access the transformed DOM tree.
applyPendingXSLTransformsNowIfScheduled();
#endif
if (auto* documentLoader = loader())
documentLoader->startIconLoading();
f->animation().startAnimationsIfNotSuspended(this);
// FIXME: We shouldn't be dispatching pending events globally on all Documents here.
// For now, only do this when there is a Frame, otherwise this could cause JS reentrancy
// below SVG font parsing, for example. <https://webkit.org/b/136269>
ImageLoader::dispatchPendingBeforeLoadEvents();
ImageLoader::dispatchPendingLoadEvents();
ImageLoader::dispatchPendingErrorEvents();
HTMLLinkElement::dispatchPendingLoadEvents();
HTMLStyleElement::dispatchPendingLoadEvents();
// To align the HTML load event and the SVGLoad event for the outermost <svg> element, fire it from
// here, instead of doing it from SVGElement::finishedParsingChildren (if externalResourcesRequired="false",
// which is the default, for ='true' its fired at a later time, once all external resources finished loading).
if (svgExtensions())
accessSVGExtensions().dispatchSVGLoadEventToOutermostSVGElements();
}
dispatchWindowLoadEvent();
dispatchPageshowEvent(PageshowEventNotPersisted);
if (m_pendingStateObject)
dispatchPopstateEvent(WTFMove(m_pendingStateObject));
if (f)
f->loader().dispatchOnloadEvents();
// An event handler may have removed the frame
if (!frame()) {
m_processingLoadEvent = false;
return;
}
// Make sure both the initial layout and reflow happen after the onload
// fires. This will improve onload scores, and other browsers do it.
// If they wanna cheat, we can too. -dwh
if (frame()->navigationScheduler().locationChangePending() && timeSinceDocumentCreation() < settings().layoutInterval()) {
// Just bail out. Before or during the onload we were shifted to another page.
// The old i-Bench suite does this. When this happens don't bother painting or laying out.
m_processingLoadEvent = false;
view()->layoutContext().unscheduleLayout();
return;
}
frame()->loader().checkCallImplicitClose();
// We used to force a synchronous display and flush here. This really isn't
// necessary and can in fact be actively harmful if pages are loading at a rate of > 60fps
// (if your platform is syncing flushes and limiting them to 60fps).
m_overMinimumLayoutThreshold = true;
if (!ownerElement() || (ownerElement()->renderer() && !ownerElement()->renderer()->needsLayout())) {
updateStyleIfNeeded();
// Always do a layout after loading if needed.
if (view() && renderView() && (!renderView()->firstChild() || renderView()->needsLayout()))
view()->layoutContext().layout();
}
m_processingLoadEvent = false;
#if PLATFORM(COCOA) || PLATFORM(WIN) || PLATFORM(GTK)
if (f && hasLivingRenderTree() && AXObjectCache::accessibilityEnabled()) {
// The AX cache may have been cleared at this point, but we need to make sure it contains an
// AX object to send the notification to. getOrCreate will make sure that an valid AX object
// exists in the cache (we ignore the return value because we don't need it here). This is
// only safe to call when a layout is not in progress, so it can not be used in postNotification.
//
// This notification is now called AXNewDocumentLoadComplete because there are other handlers that will
// catch new AND page history loads, and that uses AXLoadComplete
axObjectCache()->getOrCreate(renderView());
if (this == &topDocument())
axObjectCache()->postNotification(renderView(), AXObjectCache::AXNewDocumentLoadComplete);
else {
// AXLoadComplete can only be posted on the top document, so if it's a document
// in an iframe that just finished loading, post AXLayoutComplete instead.
axObjectCache()->postNotification(renderView(), AXObjectCache::AXLayoutComplete);
}
}
#endif
if (svgExtensions())
accessSVGExtensions().startAnimations();
}
void Document::setParsing(bool b)
{
m_bParsing = b;
if (m_bParsing && !m_sharedObjectPool)
m_sharedObjectPool = std::make_unique<DocumentSharedObjectPool>();
if (!m_bParsing && view() && !view()->needsLayout())
view()->fireLayoutRelatedMilestonesIfNeeded();
}
bool Document::shouldScheduleLayout()
{
if (!documentElement())
return false;
if (!is<HTMLHtmlElement>(*documentElement()))
return true;
if (!bodyOrFrameset())
return false;
if (styleScope().hasPendingSheetsBeforeBody())
return false;
return true;
}
bool Document::isLayoutTimerActive()
{
return view() && view()->layoutContext().isLayoutPending() && !minimumLayoutDelay();
}
Seconds Document::minimumLayoutDelay()
{
if (m_overMinimumLayoutThreshold)
return 0_s;
auto elapsed = timeSinceDocumentCreation();
m_overMinimumLayoutThreshold = elapsed > settings().layoutInterval();
// We'll want to schedule the timer to fire at the minimum layout threshold.
return std::max(0_s, settings().layoutInterval() - elapsed);
}
Seconds Document::timeSinceDocumentCreation() const
{
return MonotonicTime::now() - m_documentCreationTime;
}
void Document::write(Document* responsibleDocument, SegmentedString&& text)
{
NestingLevelIncrementer nestingLevelIncrementer(m_writeRecursionDepth);
m_writeRecursionIsTooDeep = (m_writeRecursionDepth > 1) && m_writeRecursionIsTooDeep;
m_writeRecursionIsTooDeep = (m_writeRecursionDepth > cMaxWriteRecursionDepth) || m_writeRecursionIsTooDeep;
if (m_writeRecursionIsTooDeep)
return;
bool hasInsertionPoint = m_parser && m_parser->hasInsertionPoint();
if (!hasInsertionPoint && (m_ignoreOpensDuringUnloadCount || m_ignoreDestructiveWriteCount))
return;
if (!hasInsertionPoint)
open(responsibleDocument);
ASSERT(m_parser);
m_parser->insert(WTFMove(text));
}
ExceptionOr<void> Document::write(Document* responsibleDocument, Vector<String>&& strings)
{
if (!isHTMLDocument())
return Exception { InvalidStateError };
// FIXME: This should also throw if "document's throw-on-dynamic-markup-insertion counter is greater than 0".
SegmentedString text;
for (auto& string : strings)
text.append(WTFMove(string));
write(responsibleDocument, WTFMove(text));
return { };
}
ExceptionOr<void> Document::writeln(Document* responsibleDocument, Vector<String>&& strings)
{
if (!isHTMLDocument())
return Exception { InvalidStateError };
// FIXME: This should also throw if "document's throw-on-dynamic-markup-insertion counter is greater than 0".
SegmentedString text;
for (auto& string : strings)
text.append(WTFMove(string));
text.append(ASCIILiteral { "\n" });
write(responsibleDocument, WTFMove(text));
return { };
}
Seconds Document::minimumDOMTimerInterval() const
{
auto* page = this->page();
if (!page)
return ScriptExecutionContext::minimumDOMTimerInterval();
return page->settings().minimumDOMTimerInterval();
}
void Document::setTimerThrottlingEnabled(bool shouldThrottle)
{
if (m_isTimerThrottlingEnabled == shouldThrottle)
return;
m_isTimerThrottlingEnabled = shouldThrottle;
didChangeTimerAlignmentInterval();
}
Seconds Document::domTimerAlignmentInterval(bool hasReachedMaxNestingLevel) const
{
auto alignmentInterval = ScriptExecutionContext::domTimerAlignmentInterval(hasReachedMaxNestingLevel);
if (!hasReachedMaxNestingLevel)
return alignmentInterval;
// Apply Document-level DOMTimer throttling only if timers have reached their maximum nesting level as the Page may still be visible.
if (m_isTimerThrottlingEnabled)
alignmentInterval = std::max(alignmentInterval, DOMTimer::hiddenPageAlignmentInterval());
if (Page* page = this->page())
alignmentInterval = std::max(alignmentInterval, page->domTimerAlignmentInterval());
if (!topOrigin().canAccess(securityOrigin()) && !hasHadUserInteraction())
alignmentInterval = std::max(alignmentInterval, DOMTimer::nonInteractedCrossOriginFrameAlignmentInterval());
return alignmentInterval;
}
EventTarget* Document::errorEventTarget()
{
return m_domWindow.get();
}
void Document::logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, RefPtr<Inspector::ScriptCallStack>&& callStack)
{
addMessage(MessageSource::JS, MessageLevel::Error, errorMessage, sourceURL, lineNumber, columnNumber, WTFMove(callStack));
}
void Document::setURL(const URL& url)
{
const URL& newURL = url.isEmpty() ? blankURL() : url;
if (newURL == m_url)
return;
m_url = newURL;
m_documentURI = m_url.string();
updateBaseURL();
}
void Document::updateBaseURL()
{
URL oldBaseURL = m_baseURL;
// DOM 3 Core: When the Document supports the feature "HTML" [DOM Level 2 HTML], the base URI is computed using
// first the value of the href attribute of the HTML BASE element if any, and the value of the documentURI attribute
// from the Document interface otherwise.
if (!m_baseElementURL.isEmpty())
m_baseURL = m_baseElementURL;
else if (!m_baseURLOverride.isEmpty())
m_baseURL = m_baseURLOverride;
else {
// The documentURI attribute is read-only from JavaScript, but writable from Objective C, so we need to retain
// this fallback behavior. We use a null base URL, since the documentURI attribute is an arbitrary string
// and DOM 3 Core does not specify how it should be resolved.
m_baseURL = URL(ParsedURLString, documentURI());
}
clearSelectorQueryCache();
if (!m_baseURL.isValid())
m_baseURL = URL();
if (!equalIgnoringFragmentIdentifier(oldBaseURL, m_baseURL)) {
// Base URL change changes any relative visited links.
// FIXME: There are other URLs in the tree that would need to be re-evaluated on dynamic base URL change. Style should be invalidated too.
for (auto& anchor : descendantsOfType<HTMLAnchorElement>(*this))
anchor.invalidateCachedVisitedLinkHash();
}
}
void Document::setBaseURLOverride(const URL& url)
{
m_baseURLOverride = url;
updateBaseURL();
}
void Document::processBaseElement()
{
// Find the first href attribute in a base element and the first target attribute in a base element.
const AtomicString* href = nullptr;
const AtomicString* target = nullptr;
auto baseDescendants = descendantsOfType<HTMLBaseElement>(*this);
for (auto& base : baseDescendants) {
if (!href) {
const AtomicString& value = base.attributeWithoutSynchronization(hrefAttr);
if (!value.isNull()) {
href = &value;
if (target)
break;
}
}
if (!target) {
const AtomicString& value = base.attributeWithoutSynchronization(targetAttr);
if (!value.isNull()) {
target = &value;
if (href)
break;
}
}
}
// FIXME: Since this doesn't share code with completeURL it may not handle encodings correctly.
URL baseElementURL;
if (href) {
String strippedHref = stripLeadingAndTrailingHTMLSpaces(*href);
if (!strippedHref.isEmpty())
baseElementURL = URL(url(), strippedHref);
}
if (m_baseElementURL != baseElementURL && contentSecurityPolicy()->allowBaseURI(baseElementURL)) {
m_baseElementURL = baseElementURL;
updateBaseURL();
}
m_baseTarget = target ? *target : nullAtom();
}
String Document::userAgent(const URL& url) const
{
return frame() ? frame()->loader().userAgent(url) : String();
}
void Document::disableEval(const String& errorMessage)
{
if (!frame())
return;
frame()->script().disableEval(errorMessage);
}
void Document::disableWebAssembly(const String& errorMessage)
{
if (!frame())
return;
frame()->script().disableWebAssembly(errorMessage);
}
#if ENABLE(INDEXED_DATABASE)
IDBClient::IDBConnectionProxy* Document::idbConnectionProxy()
{
if (!m_idbConnectionProxy) {
Page* currentPage = page();
if (!currentPage)
return nullptr;
m_idbConnectionProxy = &currentPage->idbConnection().proxy();
}
return m_idbConnectionProxy.get();
}
#endif
SocketProvider* Document::socketProvider()
{
return m_socketProvider.get();
}
bool Document::canNavigate(Frame* targetFrame)
{
if (!m_frame)
return false;
// FIXME: We shouldn't call this function without a target frame, but
// fast/forms/submit-to-blank-multiple-times.html depends on this function
// returning true when supplied with a 0 targetFrame.
if (!targetFrame)
return true;
// Cases (i), (ii) and (iii) pass the tests from the specifications but might not pass the "security origin" tests.
// i. A frame can navigate its top ancestor when its 'allow-top-navigation' flag is set (sometimes known as 'frame-busting').
if (!isSandboxed(SandboxTopNavigation) && targetFrame == &m_frame->tree().top())
return true;
// ii. A frame can navigate its top ancestor when its 'allow-top-navigation-by-user-activation' flag is set and navigation is triggered by user activation.
if (!isSandboxed(SandboxTopNavigationByUserActivation) && UserGestureIndicator::processingUserGesture() && targetFrame == &m_frame->tree().top())
return true;
// iii. A sandboxed frame can always navigate its descendants.
if (isSandboxed(SandboxNavigation) && targetFrame->tree().isDescendantOf(m_frame))
return true;
// From https://html.spec.whatwg.org/multipage/browsers.html#allowed-to-navigate.
// 1. If A is not the same browsing context as B, and A is not one of the ancestor browsing contexts of B, and B is not a top-level browsing context, and A's active document's active sandboxing
// flag set has its sandboxed navigation browsing context flag set, then abort these steps negatively.
if (m_frame != targetFrame && isSandboxed(SandboxNavigation) && targetFrame->tree().parent() && !targetFrame->tree().isDescendantOf(m_frame)) {
printNavigationErrorMessage(targetFrame, url(), ASCIILiteral("The frame attempting navigation is sandboxed, and is therefore disallowed from navigating its ancestors."));
return false;
}
// 2. Otherwise, if B is a top-level browsing context, and is one of the ancestor browsing contexts of A, then:
if (m_frame != targetFrame && targetFrame == &m_frame->tree().top()) {
bool triggeredByUserActivation = UserGestureIndicator::processingUserGesture();
// 1. If this algorithm is triggered by user activation and A's active document's active sandboxing flag set has its sandboxed top-level navigation with user activation browsing context flag set, then abort these steps negatively.
if (triggeredByUserActivation && isSandboxed(SandboxTopNavigationByUserActivation)) {
printNavigationErrorMessage(targetFrame, url(), ASCIILiteral("The frame attempting navigation of the top-level window is sandboxed, but the 'allow-top-navigation-by-user-activation' flag is not set and navigation is not triggered by user activation."));
return false;
}
// 2. Otherwise, If this algorithm is not triggered by user activation and A's active document's active sandboxing flag set has its sandboxed top-level navigation without user activation browsing context flag set, then abort these steps negatively.
if (!triggeredByUserActivation && isSandboxed(SandboxTopNavigation)) {
printNavigationErrorMessage(targetFrame, url(), ASCIILiteral("The frame attempting navigation of the top-level window is sandboxed, but the 'allow-top-navigation' flag is not set."));
return false;
}
}
// 3. Otherwise, if B is a top-level browsing context, and is neither A nor one of the ancestor browsing contexts of A, and A's Document's active sandboxing flag set has its
// sandboxed navigation browsing context flag set, and A is not the one permitted sandboxed navigator of B, then abort these steps negatively.
if (!targetFrame->tree().parent() && m_frame != targetFrame && targetFrame != &m_frame->tree().top() && isSandboxed(SandboxNavigation) && targetFrame->loader().opener() != m_frame) {
printNavigationErrorMessage(targetFrame, url(), ASCIILiteral("The frame attempting navigation is sandboxed, and is not allowed to navigate this popup."));
return false;
}
// 4. Otherwise, terminate positively!
// This is the normal case. A document can navigate its descendant frames,
// or, more generally, a document can navigate a frame if the document is
// in the same origin as any of that frame's ancestors (in the frame
// hierarchy).
//
// See http://www.adambarth.com/papers/2008/barth-jackson-mitchell.pdf for
// historical information about this security check.
if (canAccessAncestor(securityOrigin(), targetFrame))
return true;
// Top-level frames are easier to navigate than other frames because they
// display their URLs in the address bar (in most browsers). However, there
// are still some restrictions on navigation to avoid nuisance attacks.
// Specifically, a document can navigate a top-level frame if that frame
// opened the document or if the document is the same-origin with any of
// the top-level frame's opener's ancestors (in the frame hierarchy).
//
// In both of these cases, the document performing the navigation is in
// some way related to the frame being navigate (e.g., by the "opener"
// and/or "parent" relation). Requiring some sort of relation prevents a
// document from navigating arbitrary, unrelated top-level frames.
if (!targetFrame->tree().parent()) {
if (targetFrame == m_frame->loader().opener())
return true;
if (canAccessAncestor(securityOrigin(), targetFrame->loader().opener()))
return true;
}
printNavigationErrorMessage(targetFrame, url(), "The frame attempting navigation is neither same-origin with the target, nor is it the target's parent or opener.");
return false;
}
Frame* Document::findUnsafeParentScrollPropagationBoundary()
{
Frame* currentFrame = m_frame;
if (!currentFrame)
return nullptr;
Frame* ancestorFrame = currentFrame->tree().parent();
while (ancestorFrame) {
if (!ancestorFrame->document()->securityOrigin().canAccess(securityOrigin()))
return currentFrame;
currentFrame = ancestorFrame;
ancestorFrame = ancestorFrame->tree().parent();
}
return nullptr;
}
void Document::didRemoveAllPendingStylesheet()
{
if (auto* parser = scriptableDocumentParser())
parser->executeScriptsWaitingForStylesheetsSoon();
}
bool Document::usesStyleBasedEditability() const
{
if (m_hasElementUsingStyleBasedEditability)
return true;
ASSERT(!m_renderView || !m_renderView->frameView().isPainting());
ASSERT(!m_inStyleRecalc);
auto& styleScope = const_cast<Style::Scope&>(this->styleScope());
styleScope.flushPendingUpdate();
return styleScope.usesStyleBasedEditability();
}
void Document::setHasElementUsingStyleBasedEditability()
{
m_hasElementUsingStyleBasedEditability = true;
}
void Document::processHttpEquiv(const String& equiv, const String& content, bool isInDocumentHead)
{
ASSERT(!equiv.isNull());
ASSERT(!content.isNull());
HttpEquivPolicy policy = httpEquivPolicy();
if (policy != HttpEquivPolicy::Enabled) {
String reason;
switch (policy) {
case HttpEquivPolicy::Enabled:
ASSERT_NOT_REACHED();
break;
case HttpEquivPolicy::DisabledBySettings:
reason = "by the embedder.";
break;
case HttpEquivPolicy::DisabledByContentDispositionAttachmentSandbox:
reason = "for documents with Content-Disposition: attachment.";
break;
}
String message = "http-equiv '" + equiv + "' is disabled " + reason;
addConsoleMessage(MessageSource::Security, MessageLevel::Error, message);
return;
}
Frame* frame = this->frame();
HTTPHeaderName headerName;
if (!findHTTPHeaderName(equiv, headerName))
return;
switch (headerName) {
case HTTPHeaderName::DefaultStyle:
// The preferred style set has been overridden as per section
// 14.3.2 of the HTML4.0 specification. We need to update the
// sheet used variable and then update our style selector.
// For more info, see the test at:
// http://www.hixie.ch/tests/evil/css/import/main/preferred.html
// -dwh
styleScope().setSelectedStylesheetSetName(content);
styleScope().setPreferredStylesheetSetName(content);
break;
case HTTPHeaderName::Refresh: {
double delay;
String urlString;
if (frame && parseMetaHTTPEquivRefresh(content, delay, urlString)) {
URL completedURL;
if (urlString.isEmpty())
completedURL = m_url;
else
completedURL = completeURL(urlString);
if (!protocolIsJavaScript(completedURL))
frame->navigationScheduler().scheduleRedirect(*this, delay, completedURL);
else {
String message = "Refused to refresh " + m_url.stringCenterEllipsizedToLength() + " to a javascript: URL";
addConsoleMessage(MessageSource::Security, MessageLevel::Error, message);
}
}
break;
}
case HTTPHeaderName::SetCookie:
// FIXME: make setCookie work on XML documents too; e.g. in case of <html:meta .....>
if (is<HTMLDocument>(*this)) {
// Exception (for sandboxed documents) ignored.
downcast<HTMLDocument>(*this).setCookie(content);
}
break;
case HTTPHeaderName::ContentLanguage:
setContentLanguage(content);
break;
case HTTPHeaderName::XDNSPrefetchControl:
parseDNSPrefetchControlHeader(content);
break;
case HTTPHeaderName::XFrameOptions:
if (frame) {
FrameLoader& frameLoader = frame->loader();
unsigned long requestIdentifier = 0;
if (frameLoader.activeDocumentLoader() && frameLoader.activeDocumentLoader()->mainResourceLoader())
requestIdentifier = frameLoader.activeDocumentLoader()->mainResourceLoader()->identifier();
String message = "The X-Frame-Option '" + content + "' supplied in a <meta> element was ignored. X-Frame-Options may only be provided by an HTTP header sent with the document.";
addConsoleMessage(MessageSource::Security, MessageLevel::Error, message, requestIdentifier);
}
break;
case HTTPHeaderName::ContentSecurityPolicy:
if (isInDocumentHead)
contentSecurityPolicy()->didReceiveHeader(content, ContentSecurityPolicyHeaderType::Enforce, ContentSecurityPolicy::PolicyFrom::HTTPEquivMeta);
break;
case HTTPHeaderName::XWebKitCSP:
if (isInDocumentHead)
contentSecurityPolicy()->didReceiveHeader(content, ContentSecurityPolicyHeaderType::PrefixedEnforce, ContentSecurityPolicy::PolicyFrom::HTTPEquivMeta);
break;
default:
break;
}
}
void Document::processViewport(const String& features, ViewportArguments::Type origin)
{
ASSERT(!features.isNull());
LOG_WITH_STREAM(Viewports, stream << "Document::processViewport " << features);
if (origin < m_viewportArguments.type)
return;
m_viewportArguments = ViewportArguments(origin);
LOG_WITH_STREAM(Viewports, stream << " resolved to " << m_viewportArguments);
processFeaturesString(features, FeatureMode::Viewport, [this](StringView key, StringView value) {
setViewportFeature(m_viewportArguments, *this, key, value);
});
updateViewportArguments();
}
void Document::updateViewportArguments()
{
if (page() && frame()->isMainFrame()) {
#ifndef NDEBUG
m_didDispatchViewportPropertiesChanged = true;
#endif
page()->chrome().dispatchViewportPropertiesDidChange(m_viewportArguments);
page()->chrome().didReceiveDocType(*frame());
}
}
#if PLATFORM(IOS)
void Document::processFormatDetection(const String& features)
{
// FIXME: Find a better place for this function.
processFeaturesString(features, FeatureMode::Viewport, [this](StringView key, StringView value) {
if (equalLettersIgnoringASCIICase(key, "telephone") && equalLettersIgnoringASCIICase(value, "no"))
setIsTelephoneNumberParsingAllowed(false);
});
}
void Document::processWebAppOrientations()
{
if (Page* page = this->page())
page->chrome().client().webAppOrientationsUpdated();
}
#endif
void Document::processReferrerPolicy(const String& policy)
{
ASSERT(!policy.isNull());
// Documents in a Content-Disposition: attachment sandbox should never send a Referer header,
// even if the document has a meta tag saying otherwise.
if (shouldEnforceContentDispositionAttachmentSandbox())
return;
#if USE(QUICK_LOOK)
if (shouldEnforceQuickLookSandbox())
return;
#endif
auto referrerPolicy = parseReferrerPolicy(policy, ShouldParseLegacyKeywords::Yes);
if (!referrerPolicy) {
addConsoleMessage(MessageSource::Rendering, MessageLevel::Error, "Failed to set referrer policy: The value '" + policy + "' is not one of 'no-referrer', 'no-referrer-when-downgrade', 'same-origin', 'origin', 'strict-origin', 'origin-when-cross-origin', 'strict-origin-when-cross-origin' or 'unsafe-url'. Defaulting to 'no-referrer'.");
setReferrerPolicy(ReferrerPolicy::NoReferrer);
return;
}
setReferrerPolicy(referrerPolicy.value());
}
MouseEventWithHitTestResults Document::prepareMouseEvent(const HitTestRequest& request, const LayoutPoint& documentPoint, const PlatformMouseEvent& event)
{
if (!hasLivingRenderTree())
return MouseEventWithHitTestResults(event, HitTestResult(LayoutPoint()));
HitTestResult result(documentPoint);
renderView()->hitTest(request, result);
if (!request.readOnly())
updateHoverActiveState(request, result.targetElement());
return MouseEventWithHitTestResults(event, result);
}
// DOM Section 1.1.1
bool Document::childTypeAllowed(NodeType type) const
{
switch (type) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_FRAGMENT_NODE:
case DOCUMENT_NODE:
case TEXT_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
return true;
case DOCUMENT_TYPE_NODE:
case ELEMENT_NODE:
// Documents may contain no more than one of each of these.
// (One Element and one DocumentType.)
for (Node* c = firstChild(); c; c = c->nextSibling())
if (c->nodeType() == type)
return false;
return true;
}
return false;
}
bool Document::canAcceptChild(const Node& newChild, const Node* refChild, AcceptChildOperation operation) const
{
if (operation == AcceptChildOperation::Replace && refChild->nodeType() == newChild.nodeType())
return true;
switch (newChild.nodeType()) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_NODE:
case TEXT_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
return true;
case DOCUMENT_FRAGMENT_NODE: {
bool hasSeenElementChild = false;
for (auto* node = downcast<DocumentFragment>(newChild).firstChild(); node; node = node->nextSibling()) {
if (is<Element>(*node)) {
if (hasSeenElementChild)
return false;
hasSeenElementChild = true;
}
if (!canAcceptChild(*node, refChild, operation))
return false;
}
break;
}
case DOCUMENT_TYPE_NODE: {
auto* existingDocType = childrenOfType<DocumentType>(*this).first();
if (operation == AcceptChildOperation::Replace) {
// parent has a doctype child that is not child, or an element is preceding child.
if (existingDocType && existingDocType != refChild)
return false;
if (refChild->previousElementSibling())
return false;
} else {
ASSERT(operation == AcceptChildOperation::InsertOrAdd);
if (existingDocType)
return false;
if ((refChild && refChild->previousElementSibling()) || (!refChild && firstElementChild()))
return false;
}
break;
}
case ELEMENT_NODE: {
auto* existingElementChild = firstElementChild();
if (operation == AcceptChildOperation::Replace) {
if (existingElementChild && existingElementChild != refChild)
return false;
for (auto* child = refChild->nextSibling(); child; child = child->nextSibling()) {
if (is<DocumentType>(*child))
return false;
}
} else {
ASSERT(operation == AcceptChildOperation::InsertOrAdd);
if (existingElementChild)
return false;
for (auto* child = refChild; child; child = child->nextSibling()) {
if (is<DocumentType>(*child))
return false;
}
}
break;
}
}
return true;
}
Ref<Node> Document::cloneNodeInternal(Document&, CloningOperation type)
{
Ref<Document> clone = cloneDocumentWithoutChildren();
clone->cloneDataFromDocument(*this);
switch (type) {
case CloningOperation::OnlySelf:
case CloningOperation::SelfWithTemplateContent:
break;
case CloningOperation::Everything:
cloneChildNodes(clone);
break;
}
return WTFMove(clone);
}
Ref<Document> Document::cloneDocumentWithoutChildren() const
{
if (isXMLDocument()) {
if (isXHTMLDocument())
return XMLDocument::createXHTML(nullptr, url());
return XMLDocument::create(nullptr, url());
}
return create(nullptr, url());
}
void Document::cloneDataFromDocument(const Document& other)
{
ASSERT(m_url == other.url());
m_baseURL = other.baseURL();
m_baseURLOverride = other.baseURLOverride();
m_documentURI = other.documentURI();
setCompatibilityMode(other.m_compatibilityMode);
setContextDocument(other.contextDocument());
setSecurityOriginPolicy(other.securityOriginPolicy());
overrideMIMEType(other.contentType());
setDecoder(other.decoder());
}
StyleSheetList& Document::styleSheets()
{
if (!m_styleSheetList)
m_styleSheetList = StyleSheetList::create(this);
return *m_styleSheetList;
}
String Document::preferredStylesheetSet() const
{
return styleScope().preferredStylesheetSetName();
}
String Document::selectedStylesheetSet() const
{
return styleScope().selectedStylesheetSetName();
}
void Document::setSelectedStylesheetSet(const String& aString)
{
styleScope().setSelectedStylesheetSetName(aString);
}
void Document::evaluateMediaQueryList()
{
if (m_mediaQueryMatcher)
m_mediaQueryMatcher->styleResolverChanged();
checkViewportDependentPictures();
}
void Document::checkViewportDependentPictures()
{
Vector<HTMLPictureElement*, 16> changedPictures;
HashSet<HTMLPictureElement*>::iterator end = m_viewportDependentPictures.end();
for (HashSet<HTMLPictureElement*>::iterator it = m_viewportDependentPictures.begin(); it != end; ++it) {
if ((*it)->viewportChangeAffectedPicture())
changedPictures.append(*it);
}
for (auto* picture : changedPictures)
picture->sourcesChanged();
}
void Document::updateViewportUnitsOnResize()
{
if (!hasStyleWithViewportUnits())
return;
styleScope().resolver().clearCachedPropertiesAffectedByViewportUnits();
// FIXME: Ideally, we should save the list of elements that have viewport units and only iterate over those.
for (Element* element = ElementTraversal::firstWithin(rootNode()); element; element = ElementTraversal::nextIncludingPseudo(*element)) {
auto* renderer = element->renderer();
if (renderer && renderer->style().hasViewportUnits())
element->invalidateStyle();
}
}
void Document::addAudioProducer(MediaProducer* audioProducer)
{
m_audioProducers.add(audioProducer);
updateIsPlayingMedia();
}
void Document::removeAudioProducer(MediaProducer* audioProducer)
{
m_audioProducers.remove(audioProducer);
updateIsPlayingMedia();
}
void Document::noteUserInteractionWithMediaElement()
{
if (m_userHasInteractedWithMediaElement)
return;
if (!topDocument().userDidInteractWithPage())
return;
m_userHasInteractedWithMediaElement = true;
updateIsPlayingMedia();
}
void Document::updateIsPlayingMedia(uint64_t sourceElementID)
{
MediaProducer::MediaStateFlags state = MediaProducer::IsNotPlaying;
for (auto* audioProducer : m_audioProducers)
state |= audioProducer->mediaState();
#if ENABLE(MEDIA_SESSION)
if (HTMLMediaElement* sourceElement = HTMLMediaElement::elementWithID(sourceElementID)) {
if (sourceElement->isPlaying())
state |= MediaProducer::IsSourceElementPlaying;
if (auto* session = sourceElement->session()) {
if (auto* controls = session->controls()) {
if (controls->previousTrackEnabled())
state |= MediaProducer::IsPreviousTrackControlEnabled;
if (controls->nextTrackEnabled())
state |= MediaProducer::IsNextTrackControlEnabled;
}
}
}
#endif
if (m_userHasInteractedWithMediaElement)
state |= MediaProducer::HasUserInteractedWithMediaElement;
if (state == m_mediaState)
return;
#if ENABLE(MEDIA_STREAM)
bool captureStateChanged = MediaProducer::isCapturing(m_mediaState) != MediaProducer::isCapturing(state);
#endif
m_mediaState = state;
if (page())
page()->updateIsPlayingMedia(sourceElementID);
#if ENABLE(MEDIA_STREAM)
if (captureStateChanged)
mediaStreamCaptureStateChanged();
#endif
}
void Document::pageMutedStateDidChange()
{
for (auto* audioProducer : m_audioProducers)
audioProducer->pageMutedStateDidChange();
}
static bool isNodeInSubtree(Node& node, Node& container, bool amongChildrenOnly)
{
if (amongChildrenOnly)
return node.isDescendantOf(container);
else
return &node == &container || node.isDescendantOf(container);
}
void Document::removeFocusedNodeOfSubtree(Node& node, bool amongChildrenOnly)
{
if (!m_focusedElement || pageCacheState() != NotInPageCache) // If the document is in the page cache, then we don't need to clear out the focused node.
return;
Element* focusedElement = node.treeScope().focusedElementInScope();
if (!focusedElement)
return;
if (isNodeInSubtree(*focusedElement, node, amongChildrenOnly)) {
// FIXME: We should avoid synchronously updating the style inside setFocusedElement.
// FIXME: Object elements should avoid loading a frame synchronously in a post style recalc callback.
SubframeLoadingDisabler disabler(is<ContainerNode>(node) ? &downcast<ContainerNode>(node) : nullptr);
setFocusedElement(nullptr, FocusDirectionNone, FocusRemovalEventsMode::DoNotDispatch);
// Set the focus navigation starting node to the previous focused element so that
// we can fallback to the siblings or parent node for the next search.
// Also we need to call removeFocusNavigationNodeOfSubtree after this function because
// setFocusedElement(nullptr) will reset m_focusNavigationStartingNode.
setFocusNavigationStartingNode(focusedElement);
}
}
void Document::hoveredElementDidDetach(Element* element)
{
if (!m_hoveredElement || element != m_hoveredElement)
return;
m_hoveredElement = element->parentElement();
while (m_hoveredElement && !m_hoveredElement->renderer())
m_hoveredElement = m_hoveredElement->parentElement();
if (frame())
frame()->eventHandler().scheduleHoverStateUpdate();
}
void Document::elementInActiveChainDidDetach(Element* element)
{
if (!m_activeElement || element != m_activeElement)
return;
m_activeElement = element->parentElement();
while (m_activeElement && !m_activeElement->renderer())
m_activeElement = m_activeElement->parentElement();
}
#if ENABLE(DASHBOARD_SUPPORT)
const Vector<AnnotatedRegionValue>& Document::annotatedRegions() const
{
return m_annotatedRegions;
}
void Document::setAnnotatedRegions(const Vector<AnnotatedRegionValue>& regions)
{
m_annotatedRegions = regions;
setAnnotatedRegionsDirty(false);
}
#endif
bool Document::setFocusedElement(Element* element, FocusDirection direction, FocusRemovalEventsMode eventsMode)
{
RefPtr<Element> newFocusedElement = element;
// Make sure newFocusedElement is actually in this document
if (newFocusedElement && (&newFocusedElement->document() != this))
return true;
if (m_focusedElement == newFocusedElement)
return true;
if (pageCacheState() != NotInPageCache)
return false;
bool focusChangeBlocked = false;
RefPtr<Element> oldFocusedElement = WTFMove(m_focusedElement);
// Remove focus from the existing focus node (if any)
if (oldFocusedElement) {
oldFocusedElement->setFocus(false);
setFocusNavigationStartingNode(nullptr);
if (eventsMode == FocusRemovalEventsMode::Dispatch) {
// Dispatch a change event for form control elements that have been edited.
if (is<HTMLFormControlElement>(*oldFocusedElement)) {
HTMLFormControlElement& formControlElement = downcast<HTMLFormControlElement>(*oldFocusedElement);
if (formControlElement.wasChangedSinceLastFormControlChangeEvent())
formControlElement.dispatchFormControlChangeEvent();
}
// Dispatch the blur event and let the node do any other blur related activities (important for text fields)
oldFocusedElement->dispatchBlurEvent(newFocusedElement.copyRef());
if (m_focusedElement) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedElement = nullptr;
}
oldFocusedElement->dispatchFocusOutEvent(eventNames().focusoutEvent, newFocusedElement.copyRef()); // DOM level 3 name for the bubbling blur event.
// FIXME: We should remove firing DOMFocusOutEvent event when we are sure no content depends
// on it, probably when <rdar://problem/8503958> is resolved.
oldFocusedElement->dispatchFocusOutEvent(eventNames().DOMFocusOutEvent, newFocusedElement.copyRef()); // DOM level 2 name for compatibility.
if (m_focusedElement) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedElement = nullptr;
}
} else {
// Match the order in HTMLTextFormControlElement::dispatchBlurEvent.
if (is<HTMLInputElement>(*oldFocusedElement))
downcast<HTMLInputElement>(*oldFocusedElement).endEditing();
if (page())
page()->chrome().client().elementDidBlur(*oldFocusedElement);
ASSERT(!m_focusedElement);
}
if (oldFocusedElement->isRootEditableElement())
frame()->editor().didEndEditing();
if (view()) {
if (Widget* oldWidget = widgetForElement(oldFocusedElement.get()))
oldWidget->setFocus(false);
else
view()->setFocus(false);
}
if (is<HTMLInputElement>(oldFocusedElement)) {
// HTMLInputElement::didBlur just scrolls text fields back to the beginning.
// FIXME: This could be done asynchronusly.
// Updating style may dispatch events due to PostResolutionCallback
if (eventsMode == FocusRemovalEventsMode::Dispatch)
updateStyleIfNeeded();
downcast<HTMLInputElement>(*oldFocusedElement).didBlur();
}
}
if (newFocusedElement && newFocusedElement->isFocusable()) {
if (newFocusedElement->isRootEditableElement() && !acceptsEditingFocus(*newFocusedElement)) {
// delegate blocks focus change
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
// Set focus on the new node
m_focusedElement = newFocusedElement;
setFocusNavigationStartingNode(m_focusedElement.get());
// Dispatch the focus event and let the node do any other focus related activities (important for text fields)
m_focusedElement->dispatchFocusEvent(oldFocusedElement.copyRef(), direction);
if (m_focusedElement != newFocusedElement) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedElement->dispatchFocusInEvent(eventNames().focusinEvent, oldFocusedElement.copyRef()); // DOM level 3 bubbling focus event.
if (m_focusedElement != newFocusedElement) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
// FIXME: We should remove firing DOMFocusInEvent event when we are sure no content depends
// on it, probably when <rdar://problem/8503958> is m.
m_focusedElement->dispatchFocusInEvent(eventNames().DOMFocusInEvent, oldFocusedElement.copyRef()); // DOM level 2 for compatibility.
if (m_focusedElement != newFocusedElement) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedElement->setFocus(true);
// The setFocus call triggers a blur and a focus event. Event handlers could cause the focused element to be cleared.
if (m_focusedElement != newFocusedElement) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
if (m_focusedElement->isRootEditableElement())
frame()->editor().didBeginEditing();
// eww, I suck. set the qt focus correctly
// ### find a better place in the code for this
if (view()) {
Widget* focusWidget = widgetForElement(m_focusedElement.get());
if (focusWidget) {
// Make sure a widget has the right size before giving it focus.
// Otherwise, we are testing edge cases of the Widget code.
// Specifically, in WebCore this does not work well for text fields.
updateLayout();
// Re-get the widget in case updating the layout changed things.
focusWidget = widgetForElement(m_focusedElement.get());
}
if (focusWidget)
focusWidget->setFocus(true);
else
view()->setFocus(true);
}
}
if (!focusChangeBlocked && m_focusedElement) {
// Create the AXObject cache in a focus change because GTK relies on it.
if (AXObjectCache* cache = axObjectCache())
cache->deferFocusedUIElementChangeIfNeeded(oldFocusedElement.get(), newFocusedElement.get());
}
if (!focusChangeBlocked && page())
page()->chrome().focusedElementChanged(m_focusedElement.get());
SetFocusedNodeDone:
// Updating style may dispatch events due to PostResolutionCallback
// FIXME: Why is synchronous style update needed here at all?
if (eventsMode == FocusRemovalEventsMode::Dispatch)
updateStyleIfNeeded();
return !focusChangeBlocked;
}
static bool shouldResetFocusNavigationStartingNode(Node& node)
{
// Setting focus navigation starting node to the following nodes means that we should start
// the search from the beginning of the document.
return is<HTMLHtmlElement>(node) || is<HTMLDocument>(node);
}
void Document::setFocusNavigationStartingNode(Node* node)
{
if (!m_frame)
return;
m_focusNavigationStartingNodeIsRemoved = false;
if (!node || shouldResetFocusNavigationStartingNode(*node)) {
m_focusNavigationStartingNode = nullptr;
return;
}
m_focusNavigationStartingNode = node;
}
Element* Document::focusNavigationStartingNode(FocusDirection direction) const
{
if (m_focusedElement) {
if (!m_focusNavigationStartingNode || !m_focusNavigationStartingNode->isDescendantOf(m_focusedElement.get()))
return m_focusedElement.get();
}
if (!m_focusNavigationStartingNode)
return nullptr;
Node* node = m_focusNavigationStartingNode.get();
// When the node was removed from the document tree. This case is not specified in the spec:
// https://html.spec.whatwg.org/multipage/interaction.html#sequential-focus-navigation-starting-point
// Current behaivor is to move the sequential navigation node to / after (based on the focus direction)
// the previous sibling of the removed node.
if (m_focusNavigationStartingNodeIsRemoved) {
Node* nextNode = NodeTraversal::next(*node);
if (!nextNode)
nextNode = node;
if (direction == FocusDirectionForward)
return ElementTraversal::previous(*nextNode);
if (is<Element>(*nextNode))
return downcast<Element>(nextNode);
return ElementTraversal::next(*nextNode);
}
if (is<Element>(*node))
return downcast<Element>(node);
if (Element* elementBeforeNextFocusableElement = direction == FocusDirectionForward ? ElementTraversal::previous(*node) : ElementTraversal::next(*node))
return elementBeforeNextFocusableElement;
return node->parentOrShadowHostElement();
}
void Document::setCSSTarget(Element* targetNode)
{
if (m_cssTarget)
m_cssTarget->invalidateStyleForSubtree();
m_cssTarget = targetNode;
if (targetNode)
targetNode->invalidateStyleForSubtree();
}
void Document::registerNodeListForInvalidation(LiveNodeList& list)
{
m_nodeListAndCollectionCounts[list.invalidationType()]++;
if (!list.isRootedAtDocument())
return;
ASSERT(!list.isRegisteredForInvalidationAtDocument());
list.setRegisteredForInvalidationAtDocument(true);
m_listsInvalidatedAtDocument.add(&list);
}
void Document::unregisterNodeListForInvalidation(LiveNodeList& list)
{
m_nodeListAndCollectionCounts[list.invalidationType()]--;
if (!list.isRegisteredForInvalidationAtDocument())
return;
list.setRegisteredForInvalidationAtDocument(false);
ASSERT(m_listsInvalidatedAtDocument.contains(&list));
m_listsInvalidatedAtDocument.remove(&list);
}
void Document::registerCollection(HTMLCollection& collection)
{
m_nodeListAndCollectionCounts[collection.invalidationType()]++;
if (collection.isRootedAtDocument())
m_collectionsInvalidatedAtDocument.add(&collection);
}
void Document::unregisterCollection(HTMLCollection& collection)
{
ASSERT(m_nodeListAndCollectionCounts[collection.invalidationType()]);
m_nodeListAndCollectionCounts[collection.invalidationType()]--;
if (!collection.isRootedAtDocument())
return;
m_collectionsInvalidatedAtDocument.remove(&collection);
}
void Document::collectionCachedIdNameMap(const HTMLCollection& collection)
{
ASSERT_UNUSED(collection, collection.hasNamedElementCache());
m_nodeListAndCollectionCounts[InvalidateOnIdNameAttrChange]++;
}
void Document::collectionWillClearIdNameMap(const HTMLCollection& collection)
{
ASSERT_UNUSED(collection, collection.hasNamedElementCache());
ASSERT(m_nodeListAndCollectionCounts[InvalidateOnIdNameAttrChange]);
m_nodeListAndCollectionCounts[InvalidateOnIdNameAttrChange]--;
}
void Document::attachNodeIterator(NodeIterator* ni)
{
m_nodeIterators.add(ni);
}
void Document::detachNodeIterator(NodeIterator* ni)
{
// The node iterator can be detached without having been attached if its root node didn't have a document
// when the iterator was created, but has it now.
m_nodeIterators.remove(ni);
}
void Document::moveNodeIteratorsToNewDocumentSlowCase(Node& node, Document& newDocument)
{
ASSERT(!m_nodeIterators.isEmpty());
for (auto* it : copyToVector(m_nodeIterators)) {
if (&it->root() == &node) {
detachNodeIterator(it);
newDocument.attachNodeIterator(it);
}
}
}
void Document::updateRangesAfterChildrenChanged(ContainerNode& container)
{
for (auto* range : m_ranges)
range->nodeChildrenChanged(container);
}
void Document::nodeChildrenWillBeRemoved(ContainerNode& container)
{
ASSERT(!ScriptDisallowedScope::InMainThread::isScriptAllowed());
removeFocusedNodeOfSubtree(container, true /* amongChildrenOnly */);
removeFocusNavigationNodeOfSubtree(container, true /* amongChildrenOnly */);
#if ENABLE(FULLSCREEN_API)
removeFullScreenElementOfSubtree(container, true /* amongChildrenOnly */);
#endif
for (auto* range : m_ranges)
range->nodeChildrenWillBeRemoved(container);
for (auto* it : m_nodeIterators) {
for (Node* n = container.firstChild(); n; n = n->nextSibling())
it->nodeWillBeRemoved(*n);
}
if (RefPtr<Frame> frame = this->frame()) {
for (Node* n = container.firstChild(); n; n = n->nextSibling()) {
frame->eventHandler().nodeWillBeRemoved(*n);
frame->selection().nodeWillBeRemoved(*n);
frame->page()->dragCaretController().nodeWillBeRemoved(*n);
}
}
if (m_markers->hasMarkers()) {
for (Text* textNode = TextNodeTraversal::firstChild(container); textNode; textNode = TextNodeTraversal::nextSibling(*textNode))
m_markers->removeMarkers(textNode);
}
}
void Document::nodeWillBeRemoved(Node& node)
{
ASSERT(!ScriptDisallowedScope::InMainThread::isScriptAllowed());
removeFocusedNodeOfSubtree(node);
removeFocusNavigationNodeOfSubtree(node);
#if ENABLE(FULLSCREEN_API)
removeFullScreenElementOfSubtree(node);
#endif
for (auto* it : m_nodeIterators)
it->nodeWillBeRemoved(node);
for (auto* range : m_ranges)
range->nodeWillBeRemoved(node);
if (RefPtr<Frame> frame = this->frame()) {
frame->eventHandler().nodeWillBeRemoved(node);
frame->selection().nodeWillBeRemoved(node);
frame->page()->dragCaretController().nodeWillBeRemoved(node);
}
if (is<Text>(node))
m_markers->removeMarkers(&node);
}
static Node* fallbackFocusNavigationStartingNodeAfterRemoval(Node& node)
{
return node.previousSibling() ? node.previousSibling() : node.parentNode();
}
void Document::removeFocusNavigationNodeOfSubtree(Node& node, bool amongChildrenOnly)
{
if (!m_focusNavigationStartingNode)
return;
if (isNodeInSubtree(*m_focusNavigationStartingNode, node, amongChildrenOnly)) {
m_focusNavigationStartingNode = amongChildrenOnly ? &node : fallbackFocusNavigationStartingNodeAfterRemoval(node);
m_focusNavigationStartingNodeIsRemoved = true;
}
}
void Document::textInserted(Node* text, unsigned offset, unsigned length)
{
if (!m_ranges.isEmpty()) {
for (auto* range : m_ranges)
range->textInserted(text, offset, length);
}
// Update the markers for spelling and grammar checking.
m_markers->shiftMarkers(text, offset, length);
}
void Document::textRemoved(Node* text, unsigned offset, unsigned length)
{
if (!m_ranges.isEmpty()) {
for (auto* range : m_ranges)
range->textRemoved(text, offset, length);
}
// Update the markers for spelling and grammar checking.
m_markers->removeMarkers(text, offset, length);
m_markers->shiftMarkers(text, offset + length, 0 - length);
}
void Document::textNodesMerged(Text* oldNode, unsigned offset)
{
if (!m_ranges.isEmpty()) {
NodeWithIndex oldNodeWithIndex(oldNode);
for (auto* range : m_ranges)
range->textNodesMerged(oldNodeWithIndex, offset);
}
// FIXME: This should update markers for spelling and grammar checking.
}
void Document::textNodeSplit(Text* oldNode)
{
for (auto* range : m_ranges)
range->textNodeSplit(oldNode);
// FIXME: This should update markers for spelling and grammar checking.
}
void Document::createDOMWindow()
{
ASSERT(m_frame);
ASSERT(!m_domWindow);
m_domWindow = DOMWindow::create(*this);
ASSERT(m_domWindow->document() == this);
ASSERT(m_domWindow->frame() == m_frame);
m_frame->loader().client().didCreateWindow(*m_domWindow);
}
void Document::takeDOMWindowFrom(Document* document)
{
ASSERT(m_frame);
ASSERT(!m_domWindow);
ASSERT(document->m_domWindow);
// A valid DOMWindow is needed by CachedFrame for its documents.
ASSERT(pageCacheState() == NotInPageCache);
m_domWindow = WTFMove(document->m_domWindow);
m_domWindow->didSecureTransitionTo(*this);
ASSERT(m_domWindow->document() == this);
ASSERT(m_domWindow->frame() == m_frame);
}
WindowProxy* Document::windowProxy() const
{
if (!m_frame)
return nullptr;
return &m_frame->windowProxy();
}
Document& Document::contextDocument() const
{
if (m_contextDocument)
return *m_contextDocument.get();
return const_cast<Document&>(*this);
}
void Document::setAttributeEventListener(const AtomicString& eventType, const QualifiedName& attributeName, const AtomicString& attributeValue, DOMWrapperWorld& isolatedWorld)
{
setAttributeEventListener(eventType, JSLazyEventListener::create(*this, attributeName, attributeValue), isolatedWorld);
}
void Document::setWindowAttributeEventListener(const AtomicString& eventType, RefPtr<EventListener>&& listener, DOMWrapperWorld& isolatedWorld)
{
if (!m_domWindow)
return;
m_domWindow->setAttributeEventListener(eventType, WTFMove(listener), isolatedWorld);
}
void Document::setWindowAttributeEventListener(const AtomicString& eventType, const QualifiedName& attributeName, const AtomicString& attributeValue, DOMWrapperWorld& isolatedWorld)
{
if (!m_domWindow)
return;
setWindowAttributeEventListener(eventType, JSLazyEventListener::create(*m_domWindow, attributeName, attributeValue), isolatedWorld);
}
EventListener* Document::getWindowAttributeEventListener(const AtomicString& eventType, DOMWrapperWorld& isolatedWorld)
{
if (!m_domWindow)
return nullptr;
return m_domWindow->attributeEventListener(eventType, isolatedWorld);
}
void Document::dispatchWindowEvent(Event& event, EventTarget* target)
{
ASSERT_WITH_SECURITY_IMPLICATION(ScriptDisallowedScope::InMainThread::isScriptAllowed());
if (!m_domWindow)
return;
m_domWindow->dispatchEvent(event, target);
}
void Document::dispatchWindowLoadEvent()
{
ASSERT_WITH_SECURITY_IMPLICATION(ScriptDisallowedScope::InMainThread::isScriptAllowed());
if (!m_domWindow)
return;
m_domWindow->dispatchLoadEvent();
m_loadEventFinished = true;
m_cachedResourceLoader->documentDidFinishLoadEvent();
}
void Document::enqueueWindowEvent(Ref<Event>&& event)
{
event->setTarget(m_domWindow.get());
m_eventQueue.enqueueEvent(WTFMove(event));
}
void Document::enqueueDocumentEvent(Ref<Event>&& event)
{
event->setTarget(this);
m_eventQueue.enqueueEvent(WTFMove(event));
}
void Document::enqueueOverflowEvent(Ref<Event>&& event)
{
m_eventQueue.enqueueEvent(WTFMove(event));
}
ExceptionOr<Ref<Event>> Document::createEvent(const String& type)
{
// Please do *not* add new event classes to this function unless they are required
// for compatibility with the DOM specification or some actual legacy web content.
// This mechanism is superceded by use of event constructors.
// That is what we should use for any new event classes.
// The following strings are the ones from the DOM specification
// <https://dom.spec.whatwg.org/#dom-document-createevent>.
if (equalLettersIgnoringASCIICase(type, "beforeunloadevent"))
return Ref<Event> { BeforeUnloadEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "compositionevent"))
return Ref<Event> { CompositionEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "customevent"))
return Ref<Event> { CustomEvent::create() };
if (equalLettersIgnoringASCIICase(type, "event") || equalLettersIgnoringASCIICase(type, "events") || equalLettersIgnoringASCIICase(type, "htmlevents") || equalLettersIgnoringASCIICase(type, "svgevents"))
return Event::createForBindings();
if (equalLettersIgnoringASCIICase(type, "focusevent"))
return Ref<Event> { FocusEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "hashchangeevent"))
return Ref<Event> { HashChangeEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "keyboardevent"))
return Ref<Event> { KeyboardEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "messageevent"))
return Ref<Event> { MessageEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "storageevent"))
return Ref<Event> { StorageEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "mouseevent") || equalLettersIgnoringASCIICase(type, "mouseevents"))
return Ref<Event> { MouseEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "textevent"))
return Ref<Event> { TextEvent::createForBindings() }; // FIXME: HTML specification says this should create a CompositionEvent, not a TextEvent.
if (equalLettersIgnoringASCIICase(type, "uievent") || equalLettersIgnoringASCIICase(type, "uievents"))
return Ref<Event> { UIEvent::createForBindings() };
// FIXME: Consider including support for these event classes even when device orientation
// support is not enabled.
#if ENABLE(DEVICE_ORIENTATION)
if (equalLettersIgnoringASCIICase(type, "devicemotionevent"))
return Ref<Event> { DeviceMotionEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "deviceorientationevent"))
return Ref<Event> { DeviceOrientationEvent::createForBindings() };
#endif
#if ENABLE(TOUCH_EVENTS)
if (equalLettersIgnoringASCIICase(type, "touchevent"))
return Ref<Event> { TouchEvent::createForBindings() };
#endif
// FIXME: Add support for "dragevent", which the DOM specification calls for.
// The following string comes from the SVG specification
// <http://www.w3.org/TR/SVG/script.html#InterfaceSVGZoomEvent>
// However, since there is no provision for initializing the event once it is created,
// there is no practical value in this feature.
// FIXME: Confirm there is no content depending on this and remove it.
if (equalLettersIgnoringASCIICase(type, "svgzoomevents"))
return Ref<Event> { SVGZoomEvent::createForBindings() };
// The following strings are not part of the DOM specification and we would like to eliminate them.
// However, we currently include them until we resolve any issues with backward compatibility.
// FIXME: For each of the strings below, confirm that there is no content depending on it and remove
// the string, remove the createForBindings function, and also consider removing the corresponding
// init function for that class.
if (equalLettersIgnoringASCIICase(type, "keyboardevents"))
return Ref<Event> { KeyboardEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "mutationevent") || equalLettersIgnoringASCIICase(type, "mutationevents"))
return Ref<Event> { MutationEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "overflowevent"))
return Ref<Event> { OverflowEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "popstateevent"))
return Ref<Event> { PopStateEvent::createForBindings() };
if (equalLettersIgnoringASCIICase(type, "wheelevent"))
return Ref<Event> { WheelEvent::createForBindings() };
return Exception { NotSupportedError };
}
bool Document::hasListenerTypeForEventType(PlatformEvent::Type eventType) const
{
switch (eventType) {
case PlatformEvent::MouseForceChanged:
return m_listenerTypes & Document::FORCECHANGED_LISTENER;
case PlatformEvent::MouseForceDown:
return m_listenerTypes & Document::FORCEDOWN_LISTENER;
case PlatformEvent::MouseForceUp:
return m_listenerTypes & Document::FORCEUP_LISTENER;
case PlatformEvent::MouseScroll:
return m_listenerTypes & Document::SCROLL_LISTENER;
default:
return false;
}
}
void Document::addListenerTypeIfNeeded(const AtomicString& eventType)
{
if (eventType == eventNames().DOMSubtreeModifiedEvent)
addListenerType(DOMSUBTREEMODIFIED_LISTENER);
else if (eventType == eventNames().DOMNodeInsertedEvent)
addListenerType(DOMNODEINSERTED_LISTENER);
else if (eventType == eventNames().DOMNodeRemovedEvent)
addListenerType(DOMNODEREMOVED_LISTENER);
else if (eventType == eventNames().DOMNodeRemovedFromDocumentEvent)
addListenerType(DOMNODEREMOVEDFROMDOCUMENT_LISTENER);
else if (eventType == eventNames().DOMNodeInsertedIntoDocumentEvent)
addListenerType(DOMNODEINSERTEDINTODOCUMENT_LISTENER);
else if (eventType == eventNames().DOMCharacterDataModifiedEvent)
addListenerType(DOMCHARACTERDATAMODIFIED_LISTENER);
else if (eventType == eventNames().overflowchangedEvent)
addListenerType(OVERFLOWCHANGED_LISTENER);
else if (eventType == eventNames().webkitAnimationStartEvent || eventType == eventNames().animationstartEvent)
addListenerType(ANIMATIONSTART_LISTENER);
else if (eventType == eventNames().webkitAnimationEndEvent || eventType == eventNames().animationendEvent)
addListenerType(ANIMATIONEND_LISTENER);
else if (eventType == eventNames().webkitAnimationIterationEvent || eventType == eventNames().animationiterationEvent)
addListenerType(ANIMATIONITERATION_LISTENER);
else if (eventType == eventNames().webkitTransitionEndEvent || eventType == eventNames().transitionendEvent)
addListenerType(TRANSITIONEND_LISTENER);
else if (eventType == eventNames().beforeloadEvent)
addListenerType(BEFORELOAD_LISTENER);
else if (eventType == eventNames().scrollEvent)
addListenerType(SCROLL_LISTENER);
else if (eventType == eventNames().webkitmouseforcewillbeginEvent)
addListenerType(FORCEWILLBEGIN_LISTENER);
else if (eventType == eventNames().webkitmouseforcechangedEvent)
addListenerType(FORCECHANGED_LISTENER);
else if (eventType == eventNames().webkitmouseforcedownEvent)
addListenerType(FORCEDOWN_LISTENER);
else if (eventType == eventNames().webkitmouseforceupEvent)
addListenerType(FORCEUP_LISTENER);
else if (eventType == eventNames().resizeEvent)
addListenerType(RESIZE_LISTENER);
}
CSSStyleDeclaration* Document::getOverrideStyle(Element*, const String&)
{
return nullptr;
}
HTMLFrameOwnerElement* Document::ownerElement() const
{
if (!frame())
return nullptr;
return frame()->ownerElement();
}
// https://html.spec.whatwg.org/#cookie-averse-document-object
bool Document::isCookieAverse() const
{
// A Document that has no browsing context is cookie-averse.
if (!frame())
return true;
URL cookieURL = this->cookieURL();
// This is not part of the specification but we have historically allowed cookies over file protocol
// and some developers rely on this for testing.
if (cookieURL.isLocalFile())
return false;
// A Document whose URL's scheme is not a network scheme is cookie-averse (https://fetch.spec.whatwg.org/#network-scheme).
return !cookieURL.protocolIsInHTTPFamily() && !cookieURL.protocolIs("ftp");
}
ExceptionOr<String> Document::cookie()
{
if (page() && !page()->settings().cookieEnabled())
return String();
if (isCookieAverse())
return String();
if (!securityOrigin().canAccessCookies())
return Exception { SecurityError };
URL cookieURL = this->cookieURL();
if (cookieURL.isEmpty())
return String();
if (!isDOMCookieCacheValid())
setCachedDOMCookies(cookies(*this, cookieURL));
return String { cachedDOMCookies() };
}
ExceptionOr<void> Document::setCookie(const String& value)
{
if (page() && !page()->settings().cookieEnabled())
return { };
if (isCookieAverse())
return { };
if (!securityOrigin().canAccessCookies())
return Exception { SecurityError };
URL cookieURL = this->cookieURL();
if (cookieURL.isEmpty())
return { };
invalidateDOMCookieCache();
setCookies(*this, cookieURL, value);
return { };
}
String Document::referrer() const
{
if (frame())
return frame()->loader().referrer();
return String();
}
String Document::origin() const
{
return securityOrigin().toString();
}
String Document::domain() const
{
return securityOrigin().domain();
}
bool Document::domainIsRegisterable(const String& newDomain) const
{
if (newDomain.isEmpty())
return false;
const String& effectiveDomain = domain();
// If the new domain is the same as the old domain, return true so that
// we still call securityOrigin().setDomainForDOM. This will change the
// security check behavior. For example, if a page loaded on port 8000
// assigns its current domain using document.domain, the page will
// allow other pages loaded on different ports in the same domain that
// have also assigned to access this page.
if (equalIgnoringASCIICase(effectiveDomain, newDomain))
return true;
// e.g. newDomain = webkit.org (10) and domain() = www.webkit.org (14)
unsigned oldLength = effectiveDomain.length();
unsigned newLength = newDomain.length();
if (newLength >= oldLength)
return false;
auto ipAddressSetting = settings().treatIPAddressAsDomain() ? OriginAccessEntry::TreatIPAddressAsDomain : OriginAccessEntry::TreatIPAddressAsIPAddress;
OriginAccessEntry accessEntry { securityOrigin().protocol(), newDomain, OriginAccessEntry::AllowSubdomains, ipAddressSetting };
if (!accessEntry.matchesOrigin(securityOrigin()))
return false;
if (effectiveDomain[oldLength - newLength - 1] != '.')
return false;
if (StringView { effectiveDomain }.substring(oldLength - newLength) != newDomain)
return false;
auto potentialPublicSuffix = newDomain;
if (potentialPublicSuffix.startsWith('.'))
potentialPublicSuffix.remove(0, 1);
#if ENABLE(PUBLIC_SUFFIX_LIST)
return !isPublicSuffix(potentialPublicSuffix);
#else
return true;
#endif
}
ExceptionOr<void> Document::setDomain(const String& newDomain)
{
if (!frame())
return Exception { SecurityError, "A browsing context is required to set a domain." };
if (isSandboxed(SandboxDocumentDomain))
return Exception { SecurityError, "Assignment is forbidden for sandboxed iframes." };
if (SchemeRegistry::isDomainRelaxationForbiddenForURLScheme(securityOrigin().protocol()))
return Exception { SecurityError };
// FIXME: We should add logging indicating why a domain was not allowed.
const String& effectiveDomain = domain();
if (effectiveDomain.isEmpty())
return Exception { SecurityError, "The document has a null effectiveDomain." };
if (!domainIsRegisterable(newDomain))
return Exception { SecurityError, "Attempted to use a non-registrable domain." };
securityOrigin().setDomainFromDOM(newDomain);
return { };
}
// http://www.whatwg.org/specs/web-apps/current-work/#dom-document-lastmodified
String Document::lastModified()
{
std::optional<WallTime> dateTime;
if (m_frame && loader())
dateTime = loader()->response().lastModified();
// FIXME: If this document came from the file system, the HTML5
// specification tells us to read the last modification date from the file
// system.
if (!dateTime)
dateTime = WallTime::now();
auto ctime = dateTime.value().secondsSinceEpoch().secondsAs<time_t>();
auto localDateTime = std::localtime(&ctime);
return String::format("%02d/%02d/%04d %02d:%02d:%02d", localDateTime->tm_mon + 1, localDateTime->tm_mday, 1900 + localDateTime->tm_year, localDateTime->tm_hour, localDateTime->tm_min, localDateTime->tm_sec);
}
void Document::setCookieURL(const URL& url)
{
if (m_cookieURL == url)
return;
m_cookieURL = url;
invalidateDOMCookieCache();
}
static bool isValidNameNonASCII(const LChar* characters, unsigned length)
{
if (!isValidNameStart(characters[0]))
return false;
for (unsigned i = 1; i < length; ++i) {
if (!isValidNamePart(characters[i]))
return false;
}
return true;
}
static bool isValidNameNonASCII(const UChar* characters, unsigned length)
{
unsigned i = 0;
UChar32 c;
U16_NEXT(characters, i, length, c)
if (!isValidNameStart(c))
return false;
while (i < length) {
U16_NEXT(characters, i, length, c)
if (!isValidNamePart(c))
return false;
}
return true;
}
template<typename CharType>
static inline bool isValidNameASCII(const CharType* characters, unsigned length)
{
CharType c = characters[0];
if (!(isASCIIAlpha(c) || c == ':' || c == '_'))
return false;
for (unsigned i = 1; i < length; ++i) {
c = characters[i];
if (!(isASCIIAlphanumeric(c) || c == ':' || c == '_' || c == '-' || c == '.'))
return false;
}
return true;
}
bool Document::isValidName(const String& name)
{
unsigned length = name.length();
if (!length)
return false;
if (name.is8Bit()) {
const LChar* characters = name.characters8();
if (isValidNameASCII(characters, length))
return true;
return isValidNameNonASCII(characters, length);
}
const UChar* characters = name.characters16();
if (isValidNameASCII(characters, length))
return true;
return isValidNameNonASCII(characters, length);
}
ExceptionOr<std::pair<AtomicString, AtomicString>> Document::parseQualifiedName(const String& qualifiedName)
{
unsigned length = qualifiedName.length();
if (!length)
return Exception { InvalidCharacterError };
bool nameStart = true;
bool sawColon = false;
unsigned colonPosition = 0;
for (unsigned i = 0; i < length; ) {
UChar32 c;
U16_NEXT(qualifiedName, i, length, c)
if (c == ':') {
if (sawColon)
return Exception { InvalidCharacterError };
nameStart = true;
sawColon = true;
colonPosition = i - 1;
} else if (nameStart) {
if (!isValidNameStart(c))
return Exception { InvalidCharacterError };
nameStart = false;
} else {
if (!isValidNamePart(c))
return Exception { InvalidCharacterError };
}
}
if (!sawColon)
return std::pair<AtomicString, AtomicString> { { }, { qualifiedName } };
if (!colonPosition || length - colonPosition <= 1)
return Exception { InvalidCharacterError };
return std::pair<AtomicString, AtomicString> { StringView { qualifiedName }.substring(0, colonPosition).toAtomicString(), StringView { qualifiedName }.substring(colonPosition + 1).toAtomicString() };
}
ExceptionOr<QualifiedName> Document::parseQualifiedName(const AtomicString& namespaceURI, const String& qualifiedName)
{
auto parseResult = parseQualifiedName(qualifiedName);
if (parseResult.hasException())
return parseResult.releaseException();
auto parsedPieces = parseResult.releaseReturnValue();
return QualifiedName { parsedPieces.first, parsedPieces.second, namespaceURI };
}
void Document::setDecoder(RefPtr<TextResourceDecoder>&& decoder)
{
m_decoder = WTFMove(decoder);
}
URL Document::completeURL(const String& url, const URL& baseURLOverride) const
{
// Always return a null URL when passed a null string.
// FIXME: Should we change the URL constructor to have this behavior?
// See also [CSS]StyleSheet::completeURL(const String&)
if (url.isNull())
return URL();
const URL& baseURL = ((baseURLOverride.isEmpty() || baseURLOverride == blankURL()) && parentDocument()) ? parentDocument()->baseURL() : baseURLOverride;
if (!m_decoder)
return URL(baseURL, url);
return URL(baseURL, url, m_decoder->encoding());
}
URL Document::completeURL(const String& url) const
{
return completeURL(url, m_baseURL);
}
PAL::SessionID Document::sessionID() const
{
if (m_sessionID.isValid())
return m_sessionID;
if (auto* page = this->page())
m_sessionID = page->sessionID();
return m_sessionID;
}
void Document::setPageCacheState(PageCacheState state)
{
if (m_pageCacheState == state)
return;
m_pageCacheState = state;
FrameView* v = view();
Page* page = this->page();
switch (state) {
case InPageCache:
if (v) {
// FIXME: There is some scrolling related work that needs to happen whenever a page goes into the
// page cache and similar work that needs to occur when it comes out. This is where we do the work
// that needs to happen when we enter, and the work that needs to happen when we exit is in
// HistoryController::restoreScrollPositionAndViewState(). It can't be here because this function is
// called too early on in the process of a page exiting the cache for that work to be possible in this
// function. It would be nice if there was more symmetry here.
// https://bugs.webkit.org/show_bug.cgi?id=98698
v->cacheCurrentScrollPosition();
if (page && m_frame->isMainFrame()) {
v->resetScrollbarsAndClearContentsSize();
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->clearStateTree();
}
}
#if ENABLE(POINTER_LOCK)
exitPointerLock();
#endif
styleScope().clearResolver();
clearSelectorQueryCache();
m_styleRecalcTimer.stop();
clearSharedObjectPool();
break;
case NotInPageCache:
if (childNeedsStyleRecalc())
scheduleStyleRecalc();
break;
case AboutToEnterPageCache:
break;
}
}
void Document::documentWillBecomeInactive()
{
if (renderView())
renderView()->setIsInWindow(false);
}
void Document::suspend(ActiveDOMObject::ReasonForSuspension reason)
{
if (m_isSuspended)
return;
documentWillBecomeInactive();
for (auto* element : m_documentSuspensionCallbackElements)
element->prepareForDocumentSuspension();
#ifndef NDEBUG
// Clear the update flag to be able to check if the viewport arguments update
// is dispatched, after the document is restored from the page cache.
m_didDispatchViewportPropertiesChanged = false;
#endif
ASSERT(page());
page()->lockAllOverlayScrollbarsToHidden(true);
if (RenderView* view = renderView()) {
if (view->usesCompositing())
view->compositor().cancelCompositingLayerUpdate();
}
#if USE(LIBWEBRTC)
// FIXME: This should be moved to Modules/mediastream.
if (LibWebRTCProvider::webRTCAvailable()) {
if (auto* page = this->page())
page->libWebRTCProvider().unregisterMDNSNames(identifier().toUInt64());
}
#endif
#if ENABLE(SERVICE_WORKER)
if (RuntimeEnabledFeatures::sharedFeatures().serviceWorkerEnabled() && reason == ActiveDOMObject::ReasonForSuspension::PageCache) {
ASSERT_WITH_MESSAGE(!activeServiceWorker(), "Documents with an active service worker should not go into PageCache in the first place");
setServiceWorkerConnection(nullptr);
}
#endif
suspendScheduledTasks(reason);
ASSERT(m_frame);
m_frame->clearTimers();
m_visualUpdatesAllowed = false;
m_visualUpdatesSuppressionTimer.stop();
m_isSuspended = true;
}
void Document::resume(ActiveDOMObject::ReasonForSuspension reason)
{
if (!m_isSuspended)
return;
for (auto* element : copyToVector(m_documentSuspensionCallbackElements))
element->resumeFromDocumentSuspension();
if (renderView())
renderView()->setIsInWindow(true);
ASSERT(page());
page()->lockAllOverlayScrollbarsToHidden(false);
ASSERT(m_frame);
m_frame->loader().client().dispatchDidBecomeFrameset(isFrameSet());
if (RuntimeEnabledFeatures::sharedFeatures().cssAnimationsAndCSSTransitionsBackedByWebAnimationsEnabled())
timeline().resumeAnimations();
else
m_frame->animation().resumeAnimationsForDocument(this);
resumeScheduledTasks(reason);
m_visualUpdatesAllowed = true;
m_isSuspended = false;
#if ENABLE(SERVICE_WORKER)
if (RuntimeEnabledFeatures::sharedFeatures().serviceWorkerEnabled() && reason == ActiveDOMObject::ReasonForSuspension::PageCache) {
ASSERT_WITH_MESSAGE(!activeServiceWorker(), "Documents with an active service worker should not go into PageCache in the first place");
setServiceWorkerConnection(ServiceWorkerProvider::singleton().existingServiceWorkerConnectionForSession(sessionID()));
}
#endif
}
void Document::registerForDocumentSuspensionCallbacks(Element* e)
{
m_documentSuspensionCallbackElements.add(e);
}
void Document::unregisterForDocumentSuspensionCallbacks(Element* e)
{
m_documentSuspensionCallbackElements.remove(e);
}
void Document::mediaVolumeDidChange()
{
for (auto* element : m_mediaVolumeCallbackElements)
element->mediaVolumeDidChange();
}
void Document::registerForMediaVolumeCallbacks(Element* e)
{
m_mediaVolumeCallbackElements.add(e);
}
void Document::unregisterForMediaVolumeCallbacks(Element* e)
{
m_mediaVolumeCallbackElements.remove(e);
}
bool Document::audioPlaybackRequiresUserGesture() const
{
if (DocumentLoader* loader = this->loader()) {
// If an audio playback policy was set during navigation, use it. If not, use the global settings.
AutoplayPolicy policy = loader->autoplayPolicy();
if (policy != AutoplayPolicy::Default)
return policy == AutoplayPolicy::AllowWithoutSound || policy == AutoplayPolicy::Deny;
}
return settings().audioPlaybackRequiresUserGesture();
}
bool Document::videoPlaybackRequiresUserGesture() const
{
if (DocumentLoader* loader = this->loader()) {
// If a video playback policy was set during navigation, use it. If not, use the global settings.
AutoplayPolicy policy = loader->autoplayPolicy();
if (policy != AutoplayPolicy::Default)
return policy == AutoplayPolicy::Deny;
}
return settings().videoPlaybackRequiresUserGesture();
}
void Document::storageBlockingStateDidChange()
{
securityOrigin().setStorageBlockingPolicy(settings().storageBlockingPolicy());
}
void Document::privateBrowsingStateDidChange()
{
m_sessionID = SessionID::emptySessionID();
if (m_logger)
m_logger->setEnabled(this, sessionID().isAlwaysOnLoggingAllowed());
for (auto* element : m_privateBrowsingStateChangedElements)
element->privateBrowsingStateDidChange();
#if ENABLE(SERVICE_WORKER)
ASSERT(sessionID().isValid());
if (RuntimeEnabledFeatures::sharedFeatures().serviceWorkerEnabled() && m_serviceWorkerConnection && sessionID().isValid())
setServiceWorkerConnection(&ServiceWorkerProvider::singleton().serviceWorkerConnectionForSession(sessionID()));
#endif
}
void Document::registerForPrivateBrowsingStateChangedCallbacks(Element* e)
{
m_privateBrowsingStateChangedElements.add(e);
}
void Document::unregisterForPrivateBrowsingStateChangedCallbacks(Element* e)
{
m_privateBrowsingStateChangedElements.remove(e);
}
#if ENABLE(VIDEO_TRACK)
void Document::registerForCaptionPreferencesChangedCallbacks(Element* e)
{
if (page())
page()->group().captionPreferences().setInterestedInCaptionPreferenceChanges();
m_captionPreferencesChangedElements.add(e);
}
void Document::unregisterForCaptionPreferencesChangedCallbacks(Element* e)
{
m_captionPreferencesChangedElements.remove(e);
}
void Document::captionPreferencesChanged()
{
for (auto* element : m_captionPreferencesChangedElements)
element->captionPreferencesChanged();
}
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
void Document::registerForPageScaleFactorChangedCallbacks(HTMLMediaElement* element)
{
m_pageScaleFactorChangedElements.add(element);
}
void Document::unregisterForPageScaleFactorChangedCallbacks(HTMLMediaElement* element)
{
m_pageScaleFactorChangedElements.remove(element);
}
void Document::pageScaleFactorChangedAndStable()
{
for (HTMLMediaElement* mediaElement : m_pageScaleFactorChangedElements)
mediaElement->pageScaleFactorChanged();
}
void Document::registerForUserInterfaceLayoutDirectionChangedCallbacks(HTMLMediaElement& element)
{
m_userInterfaceLayoutDirectionChangedElements.add(&element);
}
void Document::unregisterForUserInterfaceLayoutDirectionChangedCallbacks(HTMLMediaElement& element)
{
m_userInterfaceLayoutDirectionChangedElements.remove(&element);
}
void Document::userInterfaceLayoutDirectionChanged()
{
for (auto* mediaElement : m_userInterfaceLayoutDirectionChangedElements)
mediaElement->userInterfaceLayoutDirectionChanged();
}
#endif
void Document::setShouldCreateRenderers(bool f)
{
m_createRenderers = f;
}
bool Document::shouldCreateRenderers()
{
return m_createRenderers;
}
// Support for Javascript execCommand, and related methods
static Editor::Command command(Document* document, const String& commandName, bool userInterface = false)
{
RefPtr<Frame> frame = document->frame();
if (!frame || frame->document() != document)
return Editor::Command();
document->updateStyleIfNeeded();
return frame->editor().command(commandName,
userInterface ? CommandFromDOMWithUserInterface : CommandFromDOM);
}
bool Document::execCommand(const String& commandName, bool userInterface, const String& value)
{
EventQueueScope eventQueueScope;
return command(this, commandName, userInterface).execute(value);
}
bool Document::queryCommandEnabled(const String& commandName)
{
return command(this, commandName).isEnabled();
}
bool Document::queryCommandIndeterm(const String& commandName)
{
return command(this, commandName).state() == MixedTriState;
}
bool Document::queryCommandState(const String& commandName)
{
return command(this, commandName).state() == TrueTriState;
}
bool Document::queryCommandSupported(const String& commandName)
{
return command(this, commandName).isSupported();
}
String Document::queryCommandValue(const String& commandName)
{
return command(this, commandName).value();
}
void Document::pushCurrentScript(HTMLScriptElement* newCurrentScript)
{
m_currentScriptStack.append(newCurrentScript);
}
void Document::popCurrentScript()
{
ASSERT(!m_currentScriptStack.isEmpty());
m_currentScriptStack.removeLast();
}
#if ENABLE(XSLT)
void Document::scheduleToApplyXSLTransforms()
{
m_hasPendingXSLTransforms = true;
if (!m_applyPendingXSLTransformsTimer.isActive())
m_applyPendingXSLTransformsTimer.startOneShot(0_s);
}
void Document::applyPendingXSLTransformsNowIfScheduled()
{
if (!m_hasPendingXSLTransforms)
return;
m_applyPendingXSLTransformsTimer.stop();
applyPendingXSLTransformsTimerFired();
}
void Document::applyPendingXSLTransformsTimerFired()
{
if (parsing())
return;
m_hasPendingXSLTransforms = false;
ASSERT_WITH_SECURITY_IMPLICATION(ScriptDisallowedScope::InMainThread::isScriptAllowed());
for (auto& processingInstruction : styleScope().collectXSLTransforms()) {
ASSERT(processingInstruction->isXSL());
// Don't apply XSL transforms to already transformed documents -- <rdar://problem/4132806>
if (transformSourceDocument() || !processingInstruction->sheet())
return;
auto processor = XSLTProcessor::create();
processor->setXSLStyleSheet(downcast<XSLStyleSheet>(processingInstruction->sheet()));
String resultMIMEType;
String newSource;
String resultEncoding;
if (!processor->transformToString(*this, resultMIMEType, newSource, resultEncoding))
continue;
// FIXME: If the transform failed we should probably report an error (like Mozilla does).
processor->createDocumentFromSource(newSource, resultEncoding, resultMIMEType, this, frame());
}
}
void Document::setTransformSource(std::unique_ptr<TransformSource> source)
{
m_transformSource = WTFMove(source);
}
#endif
void Document::setDesignMode(InheritedBool value)
{
m_designMode = value;
for (Frame* frame = m_frame; frame && frame->document(); frame = frame->tree().traverseNext(m_frame))
frame->document()->scheduleForcedStyleRecalc();
}
String Document::designMode() const
{
return inDesignMode() ? ASCIILiteral("on") : ASCIILiteral("off");
}
void Document::setDesignMode(const String& value)
{
InheritedBool mode;
if (equalLettersIgnoringASCIICase(value, "on"))
mode = on;
else if (equalLettersIgnoringASCIICase(value, "off"))
mode = off;
else
mode = inherit;
setDesignMode(mode);
}
auto Document::getDesignMode() const -> InheritedBool
{
return m_designMode;
}
bool Document::inDesignMode() const
{
for (const Document* d = this; d; d = d->parentDocument()) {
if (d->m_designMode != inherit)
return d->m_designMode;
}
return false;
}
Document* Document::parentDocument() const
{
if (!m_frame)
return nullptr;
Frame* parent = m_frame->tree().parent();
if (!parent)
return nullptr;
return parent->document();
}
Document& Document::topDocument() const
{
// FIXME: This special-casing avoids incorrectly determined top documents during the process
// of AXObjectCache teardown or notification posting for cached or being-destroyed documents.
if (pageCacheState() == NotInPageCache && !m_renderTreeBeingDestroyed) {
if (!m_frame)
return const_cast<Document&>(*this);
// This should always be non-null.
Document* mainFrameDocument = m_frame->mainFrame().document();
return mainFrameDocument ? *mainFrameDocument : const_cast<Document&>(*this);
}
Document* document = const_cast<Document*>(this);
while (HTMLFrameOwnerElement* element = document->ownerElement())
document = &element->document();
return *document;
}
ExceptionOr<Ref<Attr>> Document::createAttribute(const String& name)
{
return createAttributeNS({ }, isHTMLDocument() ? name.convertToASCIILowercase() : name, true);
}
ExceptionOr<Ref<Attr>> Document::createAttributeNS(const AtomicString& namespaceURI, const String& qualifiedName, bool shouldIgnoreNamespaceChecks)
{
auto parseResult = parseQualifiedName(namespaceURI, qualifiedName);
if (parseResult.hasException())
return parseResult.releaseException();
QualifiedName parsedName { parseResult.releaseReturnValue() };
if (!shouldIgnoreNamespaceChecks && !hasValidNamespaceForAttributes(parsedName))
return Exception { NamespaceError };
return Attr::create(*this, parsedName, emptyString());
}
const SVGDocumentExtensions* Document::svgExtensions()
{
return m_svgExtensions.get();
}
SVGDocumentExtensions& Document::accessSVGExtensions()
{
if (!m_svgExtensions)
m_svgExtensions = std::make_unique<SVGDocumentExtensions>(*this);
return *m_svgExtensions;
}
void Document::addSVGUseElement(SVGUseElement& element)
{
auto result = m_svgUseElements.add(&element);
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(result.isNewEntry);
}
void Document::removeSVGUseElement(SVGUseElement& element)
{
bool didRemove = m_svgUseElements.remove(&element);
RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(didRemove);
}
bool Document::hasSVGRootNode() const
{
return documentElement() && documentElement()->hasTagName(SVGNames::svgTag);
}
template <CollectionType collectionType>
Ref<HTMLCollection> Document::ensureCachedCollection()
{
return ensureRareData().ensureNodeLists().addCachedCollection<GenericCachedHTMLCollection<CollectionTypeTraits<collectionType>::traversalType>>(*this, collectionType);
}
Ref<HTMLCollection> Document::images()
{
return ensureCachedCollection<DocImages>();
}
Ref<HTMLCollection> Document::applets()
{
return ensureCachedCollection<DocApplets>();
}
Ref<HTMLCollection> Document::embeds()
{
return ensureCachedCollection<DocEmbeds>();
}
Ref<HTMLCollection> Document::plugins()
{
// This is an alias for embeds() required for the JS DOM bindings.
return ensureCachedCollection<DocEmbeds>();
}
Ref<HTMLCollection> Document::scripts()
{
return ensureCachedCollection<DocScripts>();
}
Ref<HTMLCollection> Document::links()
{
return ensureCachedCollection<DocLinks>();
}
Ref<HTMLCollection> Document::forms()
{
return ensureCachedCollection<DocForms>();
}
Ref<HTMLCollection> Document::anchors()
{
return ensureCachedCollection<DocAnchors>();
}
Ref<HTMLCollection> Document::all()
{
return ensureRareData().ensureNodeLists().addCachedCollection<HTMLAllCollection>(*this, DocAll);
}
Ref<HTMLCollection> Document::allFilteredByName(const AtomicString& name)
{
return ensureRareData().ensureNodeLists().addCachedCollection<HTMLAllNamedSubCollection>(*this, DocumentAllNamedItems, name);
}
Ref<HTMLCollection> Document::windowNamedItems(const AtomicString& name)
{
return ensureRareData().ensureNodeLists().addCachedCollection<WindowNameCollection>(*this, WindowNamedItems, name);
}
Ref<HTMLCollection> Document::documentNamedItems(const AtomicString& name)
{
return ensureRareData().ensureNodeLists().addCachedCollection<DocumentNameCollection>(*this, DocumentNamedItems, name);
}
void Document::finishedParsing()
{
ASSERT(!scriptableDocumentParser() || !m_parser->isParsing());
ASSERT(!scriptableDocumentParser() || m_readyState != Loading);
setParsing(false);
Ref<Document> protectedThis(*this);
if (!m_documentTiming.domContentLoadedEventStart)
m_documentTiming.domContentLoadedEventStart = MonotonicTime::now();
dispatchEvent(Event::create(eventNames().DOMContentLoadedEvent, true, false));
if (!m_documentTiming.domContentLoadedEventEnd)
m_documentTiming.domContentLoadedEventEnd = MonotonicTime::now();
if (RefPtr<Frame> frame = this->frame()) {
#if ENABLE(XSLT)
applyPendingXSLTransformsNowIfScheduled();
#endif
// FrameLoader::finishedParsing() might end up calling Document::implicitClose() if all
// resource loads are complete. HTMLObjectElements can start loading their resources from
// post attach callbacks triggered by resolveStyle(). This means if we parse out an <object>
// tag and then reach the end of the document without updating styles, we might not have yet
// started the resource load and might fire the window load event too early. To avoid this
// we force the styles to be up to date before calling FrameLoader::finishedParsing().
// See https://bugs.webkit.org/show_bug.cgi?id=36864 starting around comment 35.
updateStyleIfNeeded();
frame->loader().finishedParsing();
InspectorInstrumentation::domContentLoadedEventFired(*frame);
}
// Schedule dropping of the DocumentSharedObjectPool. We keep it alive for a while after parsing finishes
// so that dynamically inserted content can also benefit from sharing optimizations.
// Note that we don't refresh the timer on pool access since that could lead to huge caches being kept
// alive indefinitely by something innocuous like JS setting .innerHTML repeatedly on a timer.
static const Seconds timeToKeepSharedObjectPoolAliveAfterParsingFinished { 10_s };
m_sharedObjectPoolClearTimer.startOneShot(timeToKeepSharedObjectPoolAliveAfterParsingFinished);
// Parser should have picked up all speculative preloads by now
m_cachedResourceLoader->clearPreloads(CachedResourceLoader::ClearPreloadsMode::ClearSpeculativePreloads);
}
void Document::clearSharedObjectPool()
{
m_sharedObjectPool = nullptr;
m_sharedObjectPoolClearTimer.stop();
}
#if ENABLE(TELEPHONE_NUMBER_DETECTION)
// FIXME: Find a better place for this code.
bool Document::isTelephoneNumberParsingEnabled() const
{
return settings().telephoneNumberParsingEnabled() && m_isTelephoneNumberParsingAllowed;
}
void Document::setIsTelephoneNumberParsingAllowed(bool isTelephoneNumberParsingAllowed)
{
m_isTelephoneNumberParsingAllowed = isTelephoneNumberParsingAllowed;
}
bool Document::isTelephoneNumberParsingAllowed() const
{
return m_isTelephoneNumberParsingAllowed;
}
#endif
String Document::originIdentifierForPasteboard()
{
auto origin = securityOrigin().toString();
if (origin != "null")
return origin;
if (!m_uniqueIdentifier)
m_uniqueIdentifier = "null:" + createCanonicalUUIDString();
return m_uniqueIdentifier;
}
ExceptionOr<Ref<XPathExpression>> Document::createExpression(const String& expression, RefPtr<XPathNSResolver>&& resolver)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = XPathEvaluator::create();
return m_xpathEvaluator->createExpression(expression, WTFMove(resolver));
}
Ref<XPathNSResolver> Document::createNSResolver(Node* nodeResolver)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = XPathEvaluator::create();
return m_xpathEvaluator->createNSResolver(nodeResolver);
}
ExceptionOr<Ref<XPathResult>> Document::evaluate(const String& expression, Node* contextNode, RefPtr<XPathNSResolver>&& resolver, unsigned short type, XPathResult* result)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = XPathEvaluator::create();
return m_xpathEvaluator->evaluate(expression, contextNode, WTFMove(resolver), type, result);
}
void Document::initSecurityContext()
{
if (haveInitializedSecurityOrigin()) {
ASSERT(SecurityContext::securityOrigin());
return;
}
if (!m_frame) {
// No source for a security context.
// This can occur via document.implementation.createDocument().
setCookieURL(URL(ParsedURLString, emptyString()));
setSecurityOriginPolicy(SecurityOriginPolicy::create(SecurityOrigin::createUnique()));
setContentSecurityPolicy(std::make_unique<ContentSecurityPolicy>(*this));
return;
}
// In the common case, create the security context from the currently
// loading URL with a fresh content security policy.
setCookieURL(m_url);
enforceSandboxFlags(m_frame->loader().effectiveSandboxFlags());
setReferrerPolicy(m_frame->loader().effectiveReferrerPolicy());
if (shouldEnforceContentDispositionAttachmentSandbox())
applyContentDispositionAttachmentSandbox();
bool isSecurityOriginUnique = isSandboxed(SandboxOrigin);
if (!isSecurityOriginUnique) {
auto* loader = m_frame->loader().documentLoader();
isSecurityOriginUnique = loader && loader->response().tainting() == ResourceResponse::Tainting::Opaque;
}
setSecurityOriginPolicy(SecurityOriginPolicy::create(isSecurityOriginUnique ? SecurityOrigin::createUnique() : SecurityOrigin::create(m_url)));
setContentSecurityPolicy(std::make_unique<ContentSecurityPolicy>(*this));
String overrideContentSecurityPolicy = m_frame->loader().client().overrideContentSecurityPolicy();
if (!overrideContentSecurityPolicy.isNull())
contentSecurityPolicy()->didReceiveHeader(overrideContentSecurityPolicy, ContentSecurityPolicyHeaderType::Enforce, ContentSecurityPolicy::PolicyFrom::API);
#if USE(QUICK_LOOK)
if (shouldEnforceQuickLookSandbox())
applyQuickLookSandbox();
#endif
if (shouldEnforceHTTP09Sandbox()) {
String message = makeString("Sandboxing '", m_url.stringCenterEllipsizedToLength(), "' because it is using HTTP/0.9.");
addConsoleMessage(MessageSource::Security, MessageLevel::Error, message);
enforceSandboxFlags(SandboxScripts | SandboxPlugins);
}
if (settings().needsStorageAccessFromFileURLsQuirk())
securityOrigin().grantStorageAccessFromFileURLsQuirk();
if (!settings().webSecurityEnabled()) {
// Web security is turned off. We should let this document access every other document. This is used primary by testing
// harnesses for web sites.
securityOrigin().grantUniversalAccess();
} else if (securityOrigin().isLocal()) {
if (settings().allowUniversalAccessFromFileURLs() || m_frame->loader().client().shouldForceUniversalAccessFromLocalURL(m_url)) {
// Some clients want local URLs to have universal access, but that setting is dangerous for other clients.
securityOrigin().grantUniversalAccess();
} else if (!settings().allowFileAccessFromFileURLs()) {
// Some clients want local URLs to have even tighter restrictions by default, and not be able to access other local files.
// FIXME 81578: The naming of this is confusing. Files with restricted access to other local files
// still can have other privileges that can be remembered, thereby not making them unique origins.
securityOrigin().setEnforcesFilePathSeparation();
}
}
securityOrigin().setStorageBlockingPolicy(settings().storageBlockingPolicy());
Document* parentDocument = ownerElement() ? &ownerElement()->document() : nullptr;
if (parentDocument && m_frame->loader().shouldTreatURLAsSrcdocDocument(url())) {
m_isSrcdocDocument = true;
setBaseURLOverride(parentDocument->baseURL());
}
if (parentDocument)
setStrictMixedContentMode(parentDocument->isStrictMixedContentMode());
if (!SecurityPolicy::shouldInheritSecurityOriginFromOwner(m_url))
return;
// If we do not obtain a meaningful origin from the URL, then we try to
// find one via the frame hierarchy.
Frame* parentFrame = m_frame->tree().parent();
Frame* openerFrame = m_frame->loader().opener();
Frame* ownerFrame = parentFrame;
if (!ownerFrame)
ownerFrame = openerFrame;
if (!ownerFrame) {
didFailToInitializeSecurityOrigin();
return;
}
Document* openerDocument = openerFrame ? openerFrame->document() : nullptr;
// Per <http://www.w3.org/TR/upgrade-insecure-requests/>, new browsing contexts must inherit from an
// ongoing set of upgraded requests. When opening a new browsing context, we need to capture its
// existing upgrade request. Nested browsing contexts are handled during DocumentWriter::begin.
if (openerDocument)
contentSecurityPolicy()->inheritInsecureNavigationRequestsToUpgradeFromOpener(*openerDocument->contentSecurityPolicy());
if (isSandboxed(SandboxOrigin)) {
// If we're supposed to inherit our security origin from our owner,
// but we're also sandboxed, the only thing we inherit is the ability
// to load local resources. This lets about:blank iframes in file://
// URL documents load images and other resources from the file system.
if (ownerFrame->document()->securityOrigin().canLoadLocalResources())
securityOrigin().grantLoadLocalResources();
return;
}
setCookieURL(ownerFrame->document()->cookieURL());
// We alias the SecurityOrigins to match Firefox, see Bug 15313
// https://bugs.webkit.org/show_bug.cgi?id=15313
setSecurityOriginPolicy(ownerFrame->document()->securityOriginPolicy());
}
bool Document::shouldInheritContentSecurityPolicyFromOwner() const
{
ASSERT(m_frame);
if (SecurityPolicy::shouldInheritSecurityOriginFromOwner(m_url))
return true;
if (!isPluginDocument())
return false;
if (m_frame->tree().parent())
return true;
Frame* openerFrame = m_frame->loader().opener();
if (!openerFrame)
return false;
return openerFrame->document()->securityOrigin().canAccess(securityOrigin());
}
void Document::initContentSecurityPolicy()
{
// 1. Inherit Upgrade Insecure Requests
Frame* parentFrame = m_frame->tree().parent();
if (parentFrame)
contentSecurityPolicy()->copyUpgradeInsecureRequestStateFrom(*parentFrame->document()->contentSecurityPolicy());
// 2. Inherit Content Security Policy
if (!shouldInheritContentSecurityPolicyFromOwner())
return;
Frame* ownerFrame = parentFrame;
if (!ownerFrame)
ownerFrame = m_frame->loader().opener();
if (!ownerFrame)
return;
contentSecurityPolicy()->copyStateFrom(ownerFrame->document()->contentSecurityPolicy()); // Does not copy Upgrade Insecure Requests state.
}
bool Document::isContextThread() const
{
return isMainThread();
}
bool Document::isSecureContext() const
{
if (!m_frame)
return true;
if (!securityOrigin().isPotentiallyTrustworthy())
return false;
for (Frame* frame = m_frame->tree().parent(); frame; frame = frame->tree().parent()) {
if (!frame->document()->securityOrigin().isPotentiallyTrustworthy())
return false;
}
return true;
}
void Document::updateURLForPushOrReplaceState(const URL& url)
{
Frame* f = frame();
if (!f)
return;
setURL(url);
f->loader().setOutgoingReferrer(url);
if (DocumentLoader* documentLoader = loader())
documentLoader->replaceRequestURLForSameDocumentNavigation(url);
}
void Document::statePopped(Ref<SerializedScriptValue>&& stateObject)
{
if (!frame())
return;
// Per step 11 of section 6.5.9 (history traversal) of the HTML5 spec, we
// defer firing of popstate until we're in the complete state.
if (m_readyState == Complete)
dispatchPopstateEvent(WTFMove(stateObject));
else
m_pendingStateObject = WTFMove(stateObject);
}
void Document::attachRange(Range* range)
{
ASSERT(!m_ranges.contains(range));
m_ranges.add(range);
}
void Document::detachRange(Range* range)
{
// We don't ASSERT m_ranges.contains(range) to allow us to call this
// unconditionally to fix: https://bugs.webkit.org/show_bug.cgi?id=26044
m_ranges.remove(range);
}
std::optional<RenderingContext> Document::getCSSCanvasContext(const String& type, const String& name, int width, int height)
{
HTMLCanvasElement* element = getCSSCanvasElement(name);
if (!element)
return std::nullopt;
element->setSize({ width, height });
auto context = element->getContext(type);
if (!context)
return std::nullopt;
#if ENABLE(WEBGL)
if (is<WebGLRenderingContext>(*context))
return RenderingContext { RefPtr<WebGLRenderingContext> { &downcast<WebGLRenderingContext>(*context) } };
#endif
#if ENABLE(WEBGL2)
if (is<WebGL2RenderingContext>(*context))
return RenderingContext { RefPtr<WebGL2RenderingContext> { &downcast<WebGL2RenderingContext>(*context) } };
#endif
#if ENABLE(WEBGPU)
if (is<WebGPURenderingContext>(*context))
return RenderingContext { RefPtr<WebGPURenderingContext> { &downcast<WebGPURenderingContext>(*context) } };
#endif
return RenderingContext { RefPtr<CanvasRenderingContext2D> { &downcast<CanvasRenderingContext2D>(*context) } };
}
HTMLCanvasElement* Document::getCSSCanvasElement(const String& name)
{
RefPtr<HTMLCanvasElement>& element = m_cssCanvasElements.add(name, nullptr).iterator->value;
if (!element)
element = HTMLCanvasElement::create(*this);
return element.get();
}
String Document::nameForCSSCanvasElement(const HTMLCanvasElement& canvasElement) const
{
for (const auto& entry : m_cssCanvasElements) {
if (entry.value.get() == &canvasElement)
return entry.key;
}
return String();
}
#if ENABLE(TEXT_AUTOSIZING)
TextAutoSizing& Document::textAutoSizing()
{
if (!m_textAutoSizing)
m_textAutoSizing = std::make_unique<TextAutoSizing>();
return *m_textAutoSizing;
}
#endif // ENABLE(TEXT_AUTOSIZING)
void Document::initDNSPrefetch()
{
m_haveExplicitlyDisabledDNSPrefetch = false;
m_isDNSPrefetchEnabled = settings().dnsPrefetchingEnabled() && securityOrigin().protocol() == "http";
// Inherit DNS prefetch opt-out from parent frame
if (Document* parent = parentDocument()) {
if (!parent->isDNSPrefetchEnabled())
m_isDNSPrefetchEnabled = false;
}
}
void Document::parseDNSPrefetchControlHeader(const String& dnsPrefetchControl)
{
if (!settings().dnsPrefetchingEnabled())
return;
if (equalLettersIgnoringASCIICase(dnsPrefetchControl, "on") && !m_haveExplicitlyDisabledDNSPrefetch) {
m_isDNSPrefetchEnabled = true;
return;
}
m_isDNSPrefetchEnabled = false;
m_haveExplicitlyDisabledDNSPrefetch = true;
}
void Document::addConsoleMessage(std::unique_ptr<Inspector::ConsoleMessage>&& consoleMessage)
{
if (!isContextThread()) {
postTask(AddConsoleMessageTask(WTFMove(consoleMessage)));
return;
}
if (Page* page = this->page())
page->console().addMessage(WTFMove(consoleMessage));
}
void Document::addConsoleMessage(MessageSource source, MessageLevel level, const String& message, unsigned long requestIdentifier)
{
if (!isContextThread()) {
postTask(AddConsoleMessageTask(source, level, message));
return;
}
if (Page* page = this->page())
page->console().addMessage(source, level, message, requestIdentifier, this);
if (m_consoleMessageListener)
m_consoleMessageListener->scheduleCallback(*this, message);
}
void Document::addMessage(MessageSource source, MessageLevel level, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, RefPtr<Inspector::ScriptCallStack>&& callStack, JSC::ExecState* state, unsigned long requestIdentifier)
{
if (!isContextThread()) {
postTask(AddConsoleMessageTask(source, level, message));
return;
}
if (Page* page = this->page())
page->console().addMessage(source, level, message, sourceURL, lineNumber, columnNumber, WTFMove(callStack), state, requestIdentifier);
}
void Document::postTask(Task&& task)
{
callOnMainThread([documentReference = m_weakFactory.createWeakPtr(*this), task = WTFMove(task)]() mutable {
ASSERT(isMainThread());
Document* document = documentReference.get();
if (!document)
return;
Page* page = document->page();
if ((page && page->defersLoading() && document->activeDOMObjectsAreSuspended()) || !document->m_pendingTasks.isEmpty())
document->m_pendingTasks.append(WTFMove(task));
else
task.performTask(*document);
});
}
void Document::pendingTasksTimerFired()
{
Vector<Task> pendingTasks = WTFMove(m_pendingTasks);
for (auto& task : pendingTasks)
task.performTask(*this);
}
void Document::suspendScheduledTasks(ActiveDOMObject::ReasonForSuspension reason)
{
if (m_scheduledTasksAreSuspended) {
// A page may subsequently suspend DOM objects, say as part of handling a scroll or zoom gesture, after the
// embedding client requested the page be suspended. We ignore such requests so long as the embedding client
// requested the suspension first. See <rdar://problem/13754896> for more details.
ASSERT(reasonForSuspendingActiveDOMObjects() == ActiveDOMObject::PageWillBeSuspended);
return;
}
suspendScriptedAnimationControllerCallbacks();
suspendActiveDOMObjects(reason);
scriptRunner()->suspend();
m_pendingTasksTimer.stop();
#if ENABLE(XSLT)
m_applyPendingXSLTransformsTimer.stop();
#endif
// Deferring loading and suspending parser is necessary when we need to prevent re-entrant JavaScript execution
// (e.g. while displaying an alert).
// It is not currently possible to suspend parser unless loading is deferred, because new data arriving from network
// will trigger parsing, and leave the scheduler in an inconsistent state where it doesn't know whether it's suspended or not.
if (reason == ActiveDOMObject::WillDeferLoading && m_parser)
m_parser->suspendScheduledTasks();
m_scheduledTasksAreSuspended = true;
}
void Document::resumeScheduledTasks(ActiveDOMObject::ReasonForSuspension reason)
{
if (reasonForSuspendingActiveDOMObjects() != reason)
return;
ASSERT(m_scheduledTasksAreSuspended);
if (reason == ActiveDOMObject::WillDeferLoading && m_parser)
m_parser->resumeScheduledTasks();
#if ENABLE(XSLT)
if (m_hasPendingXSLTransforms)
m_applyPendingXSLTransformsTimer.startOneShot(0_s);
#endif
if (!m_pendingTasks.isEmpty())
m_pendingTasksTimer.startOneShot(0_s);
scriptRunner()->resume();
resumeActiveDOMObjects(reason);
resumeScriptedAnimationControllerCallbacks();
m_scheduledTasksAreSuspended = false;
}
void Document::suspendScriptedAnimationControllerCallbacks()
{
if (m_scriptedAnimationController)
m_scriptedAnimationController->suspend();
}
void Document::resumeScriptedAnimationControllerCallbacks()
{
if (m_scriptedAnimationController)
m_scriptedAnimationController->resume();
}
void Document::windowScreenDidChange(PlatformDisplayID displayID)
{
if (m_scriptedAnimationController)
m_scriptedAnimationController->windowScreenDidChange(displayID);
if (m_timeline)
m_timeline->windowScreenDidChange(displayID);
if (RenderView* view = renderView()) {
if (view->usesCompositing())
view->compositor().windowScreenDidChange(displayID);
}
}
String Document::displayStringModifiedByEncoding(const String& string) const
{
if (!m_decoder)
return string;
return String { string }.replace('\\', m_decoder->encoding().backslashAsCurrencySymbol());
}
void Document::dispatchPageshowEvent(PageshowEventPersistence persisted)
{
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=36334 Pageshow event needs to fire asynchronously.
dispatchWindowEvent(PageTransitionEvent::create(eventNames().pageshowEvent, persisted), this);
}
void Document::enqueueHashchangeEvent(const String& oldURL, const String& newURL)
{
enqueueWindowEvent(HashChangeEvent::create(oldURL, newURL));
}
void Document::dispatchPopstateEvent(RefPtr<SerializedScriptValue>&& stateObject)
{
dispatchWindowEvent(PopStateEvent::create(WTFMove(stateObject), m_domWindow ? m_domWindow->history() : nullptr));
}
void Document::addMediaCanStartListener(MediaCanStartListener* listener)
{
ASSERT(!m_mediaCanStartListeners.contains(listener));
m_mediaCanStartListeners.add(listener);
}
void Document::removeMediaCanStartListener(MediaCanStartListener* listener)
{
ASSERT(m_mediaCanStartListeners.contains(listener));
m_mediaCanStartListeners.remove(listener);
}
MediaCanStartListener* Document::takeAnyMediaCanStartListener()
{
return m_mediaCanStartListeners.takeAny();
}
#if ENABLE(DEVICE_ORIENTATION) && PLATFORM(IOS)
DeviceMotionController* Document::deviceMotionController() const
{
return m_deviceMotionController.get();
}
DeviceOrientationController* Document::deviceOrientationController() const
{
return m_deviceOrientationController.get();
}
#endif
#if ENABLE(FULLSCREEN_API)
bool Document::fullScreenIsAllowedForElement(Element* element) const
{
ASSERT(element);
return isAttributeOnAllOwners(allowfullscreenAttr, webkitallowfullscreenAttr, element->document().ownerElement());
}
void Document::requestFullScreenForElement(Element* element, FullScreenCheckType checkType)
{
do {
if (!element)
element = documentElement();
// 1. If any of the following conditions are true, terminate these steps and queue a task to fire
// an event named fullscreenerror with its bubbles attribute set to true on the context object's
// node document:
// The context object is not in a document.
if (!element->isConnected())
break;
// The context object's node document, or an ancestor browsing context's document does not have
// the fullscreen enabled flag set.
if (checkType == EnforceIFrameAllowFullScreenRequirement && !fullScreenIsAllowedForElement(element))
break;
// The context object's node document fullscreen element stack is not empty and its top element
// is not an ancestor of the context object.
if (!m_fullScreenElementStack.isEmpty() && !m_fullScreenElementStack.last()->contains(element))
break;
// A descendant browsing context's document has a non-empty fullscreen element stack.
bool descendentHasNonEmptyStack = false;
for (Frame* descendant = frame() ? frame()->tree().traverseNext() : nullptr; descendant; descendant = descendant->tree().traverseNext()) {
if (descendant->document()->webkitFullscreenElement()) {
descendentHasNonEmptyStack = true;
break;
}
}
if (descendentHasNonEmptyStack)
break;
// This algorithm is not allowed to show a pop-up:
// An algorithm is allowed to show a pop-up if, in the task in which the algorithm is running, either:
// - an activation behavior is currently being processed whose click event was trusted, or
// - the event listener for a trusted click event is being handled.
if (!UserGestureIndicator::processingUserGesture())
break;
// We do not allow pressing the Escape key as a user gesture to enter fullscreen since this is the key
// to exit fullscreen.
if (UserGestureIndicator::currentUserGesture()->gestureType() == UserGestureType::EscapeKey) {
addConsoleMessage(MessageSource::Security, MessageLevel::Error, ASCIILiteral("The Escape key may not be used as a user gesture to enter fullscreen"));
break;
}
// There is a previously-established user preference, security risk, or platform limitation.
if (!page() || !page()->settings().fullScreenEnabled())
break;
bool hasKeyboardAccess = true;
if (!page()->chrome().client().supportsFullScreenForElement(*element, hasKeyboardAccess)) {
// The new full screen API does not accept a "flags" parameter, so fall back to disallowing
// keyboard input if the chrome client refuses to allow keyboard input.
hasKeyboardAccess = false;
if (!page()->chrome().client().supportsFullScreenForElement(*element, hasKeyboardAccess))
break;
}
// 2. Let doc be element's node document. (i.e. "this")
Document* currentDoc = this;
// 3. Let docs be all doc's ancestor browsing context's documents (if any) and doc.
Deque<Document*> docs;
do {
docs.prepend(currentDoc);
currentDoc = currentDoc->ownerElement() ? &currentDoc->ownerElement()->document() : nullptr;
} while (currentDoc);
// 4. For each document in docs, run these substeps:
Deque<Document*>::iterator current = docs.begin(), following = docs.begin();
do {
++following;
// 1. Let following document be the document after document in docs, or null if there is no
// such document.
Document* currentDoc = *current;
Document* followingDoc = following != docs.end() ? *following : nullptr;
// 2. If following document is null, push context object on document's fullscreen element
// stack, and queue a task to fire an event named fullscreenchange with its bubbles attribute
// set to true on the document.
if (!followingDoc) {
currentDoc->pushFullscreenElementStack(element);
addDocumentToFullScreenChangeEventQueue(currentDoc);
continue;
}
// 3. Otherwise, if document's fullscreen element stack is either empty or its top element
// is not following document's browsing context container,
Element* topElement = currentDoc->webkitFullscreenElement();
if (!topElement || topElement != followingDoc->ownerElement()) {
// ...push following document's browsing context container on document's fullscreen element
// stack, and queue a task to fire an event named fullscreenchange with its bubbles attribute
// set to true on document.
currentDoc->pushFullscreenElementStack(followingDoc->ownerElement());
addDocumentToFullScreenChangeEventQueue(currentDoc);
continue;
}
// 4. Otherwise, do nothing for this document. It stays the same.
} while (++current != docs.end());
// 5. Return, and run the remaining steps asynchronously.
// 6. Optionally, perform some animation.
m_areKeysEnabledInFullScreen = hasKeyboardAccess;
m_fullScreenTaskQueue.enqueueTask([this, element = makeRefPtr(element)] {
if (auto page = this->page())
page->chrome().client().enterFullScreenForElement(*element);
});
// 7. Optionally, display a message indicating how the user can exit displaying the context object fullscreen.
return;
} while (0);
m_fullScreenErrorEventTargetQueue.append(element ? element : documentElement());
m_fullScreenTaskQueue.enqueueTask([this] {
dispatchFullScreenChangeEvents();
});
}
void Document::webkitCancelFullScreen()
{
// The Mozilla "cancelFullScreen()" API behaves like the W3C "fully exit fullscreen" behavior, which
// is defined as:
// "To fully exit fullscreen act as if the exitFullscreen() method was invoked on the top-level browsing
// context's document and subsequently empty that document's fullscreen element stack."
Document& topDocument = this->topDocument();
if (!topDocument.webkitFullscreenElement())
return;
// To achieve that aim, remove all the elements from the top document's stack except for the first before
// calling webkitExitFullscreen():
Vector<RefPtr<Element>> replacementFullscreenElementStack;
replacementFullscreenElementStack.append(topDocument.webkitFullscreenElement());
topDocument.m_fullScreenElementStack.swap(replacementFullscreenElementStack);
topDocument.webkitExitFullscreen();
}
void Document::webkitExitFullscreen()
{
// The exitFullscreen() method must run these steps:
// 1. Let doc be the context object. (i.e. "this")
Document* currentDoc = this;
// 2. If doc's fullscreen element stack is empty, terminate these steps.
if (m_fullScreenElementStack.isEmpty())
return;
// 3. Let descendants be all the doc's descendant browsing context's documents with a non-empty fullscreen
// element stack (if any), ordered so that the child of the doc is last and the document furthest
// away from the doc is first.
Deque<RefPtr<Document>> descendants;
for (Frame* descendant = frame() ? frame()->tree().traverseNext() : nullptr; descendant; descendant = descendant->tree().traverseNext()) {
if (descendant->document()->webkitFullscreenElement())
descendants.prepend(descendant->document());
}
// 4. For each descendant in descendants, empty descendant's fullscreen element stack, and queue a
// task to fire an event named fullscreenchange with its bubbles attribute set to true on descendant.
for (auto& document : descendants) {
document->clearFullscreenElementStack();
addDocumentToFullScreenChangeEventQueue(document.get());
}
// 5. While doc is not null, run these substeps:
Element* newTop = nullptr;
while (currentDoc) {
// 1. Pop the top element of doc's fullscreen element stack.
currentDoc->popFullscreenElementStack();
// If doc's fullscreen element stack is non-empty and the element now at the top is either
// not in a document or its node document is not doc, repeat this substep.
newTop = currentDoc->webkitFullscreenElement();
if (newTop && (!newTop->isConnected() || &newTop->document() != currentDoc))
continue;
// 2. Queue a task to fire an event named fullscreenchange with its bubbles attribute set to true
// on doc.
addDocumentToFullScreenChangeEventQueue(currentDoc);
// 3. If doc's fullscreen element stack is empty and doc's browsing context has a browsing context
// container, set doc to that browsing context container's node document.
if (!newTop && currentDoc->ownerElement()) {
currentDoc = &currentDoc->ownerElement()->document();
continue;
}
// 4. Otherwise, set doc to null.
currentDoc = nullptr;
}
// 6. Return, and run the remaining steps asynchronously.
// 7. Optionally, perform some animation.
m_fullScreenTaskQueue.enqueueTask([this, newTop = makeRefPtr(newTop), fullScreenElement = m_fullScreenElement] {
auto* page = this->page();
if (!page)
return;
// Only exit out of full screen window mode if there are no remaining elements in the
// full screen stack.
if (!newTop) {
page->chrome().client().exitFullScreenForElement(fullScreenElement.get());
return;
}
// Otherwise, notify the chrome of the new full screen element.
page->chrome().client().enterFullScreenForElement(*newTop);
});
}
bool Document::webkitFullscreenEnabled() const
{
// 4. The fullscreenEnabled attribute must return true if the context object and all ancestor
// browsing context's documents have their fullscreen enabled flag set, or false otherwise.
// Top-level browsing contexts are implied to have their allowFullScreen attribute set.
return isAttributeOnAllOwners(allowfullscreenAttr, webkitallowfullscreenAttr, ownerElement());
}
static void unwrapFullScreenRenderer(RenderFullScreen* fullScreenRenderer, Element* fullScreenElement)
{
if (!fullScreenRenderer)
return;
bool requiresRenderTreeRebuild;
fullScreenRenderer->unwrapRenderer(requiresRenderTreeRebuild);
if (requiresRenderTreeRebuild && fullScreenElement && fullScreenElement->parentElement())
fullScreenElement->parentElement()->invalidateStyleAndRenderersForSubtree();
}
void Document::webkitWillEnterFullScreenForElement(Element* element)
{
if (!hasLivingRenderTree() || pageCacheState() != NotInPageCache)
return;
ASSERT(element);
// Protect against being called after the document has been removed from the page.
if (!page())
return;
ASSERT(page()->settings().fullScreenEnabled());
unwrapFullScreenRenderer(m_fullScreenRenderer.get(), m_fullScreenElement.get());
if (element)
element->willBecomeFullscreenElement();
m_fullScreenElement = element;
#if USE(NATIVE_FULLSCREEN_VIDEO)
if (element && element->isMediaElement())
return;
#endif
// Create a placeholder block for a the full-screen element, to keep the page from reflowing
// when the element is removed from the normal flow. Only do this for a RenderBox, as only
// a box will have a frameRect. The placeholder will be created in setFullScreenRenderer()
// during layout.
auto renderer = m_fullScreenElement->renderer();
bool shouldCreatePlaceholder = is<RenderBox>(renderer);
if (shouldCreatePlaceholder) {
m_savedPlaceholderFrameRect = downcast<RenderBox>(*renderer).frameRect();
m_savedPlaceholderRenderStyle = RenderStyle::clonePtr(renderer->style());
}
if (m_fullScreenElement != documentElement() && renderer)
RenderFullScreen::wrapExistingRenderer(*renderer, *this);
m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true);
resolveStyle(ResolveStyleType::Rebuild);
dispatchFullScreenChangeEvents();
}
void Document::webkitDidEnterFullScreenForElement(Element*)
{
if (!m_fullScreenElement)
return;
if (!hasLivingRenderTree() || pageCacheState() != NotInPageCache)
return;
m_fullScreenElement->didBecomeFullscreenElement();
}
void Document::webkitWillExitFullScreenForElement(Element*)
{
if (!m_fullScreenElement)
return;
if (!hasLivingRenderTree() || pageCacheState() != NotInPageCache)
return;
m_fullScreenElement->willStopBeingFullscreenElement();
}
void Document::webkitDidExitFullScreenForElement(Element*)
{
if (!m_fullScreenElement)
return;
if (!hasLivingRenderTree() || pageCacheState() != NotInPageCache)
return;
m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(false);
m_areKeysEnabledInFullScreen = false;
unwrapFullScreenRenderer(m_fullScreenRenderer.get(), m_fullScreenElement.get());
m_fullScreenElement = nullptr;
scheduleForcedStyleRecalc();
// When webkitCancelFullScreen is called, we call webkitExitFullScreen on the topDocument(). That
// means that the events will be queued there. So if we have no events here, start the timer on
// the exiting document.
bool eventTargetQueuesEmpty = m_fullScreenChangeEventTargetQueue.isEmpty() && m_fullScreenErrorEventTargetQueue.isEmpty();
Document& exitingDocument = eventTargetQueuesEmpty ? topDocument() : *this;
exitingDocument.dispatchFullScreenChangeEvents();
}
void Document::setFullScreenRenderer(RenderTreeBuilder& builder, RenderFullScreen& renderer)
{
if (&renderer == m_fullScreenRenderer)
return;
if (m_savedPlaceholderRenderStyle)
builder.createPlaceholderForFullScreen(renderer, WTFMove(m_savedPlaceholderRenderStyle), m_savedPlaceholderFrameRect);
else if (m_fullScreenRenderer && m_fullScreenRenderer->placeholder()) {
auto* placeholder = m_fullScreenRenderer->placeholder();
builder.createPlaceholderForFullScreen(renderer, RenderStyle::clonePtr(placeholder->style()), placeholder->frameRect());
}
if (m_fullScreenRenderer)
builder.destroy(*m_fullScreenRenderer);
ASSERT(!m_fullScreenRenderer);
m_fullScreenRenderer = makeWeakPtr(renderer);
}
void Document::dispatchFullScreenChangeEvents()
{
// Since we dispatch events in this function, it's possible that the
// document will be detached and GC'd. We protect it here to make sure we
// can finish the function successfully.
Ref<Document> protectedThis(*this);
Deque<RefPtr<Node>> changeQueue;
m_fullScreenChangeEventTargetQueue.swap(changeQueue);
Deque<RefPtr<Node>> errorQueue;
m_fullScreenErrorEventTargetQueue.swap(errorQueue);
dispatchFullScreenChangeOrErrorEvent(changeQueue, eventNames().webkitfullscreenchangeEvent, /* shouldNotifyMediaElement */ true);
dispatchFullScreenChangeOrErrorEvent(errorQueue, eventNames().webkitfullscreenerrorEvent, /* shouldNotifyMediaElement */ false);
}
void Document::dispatchFullScreenChangeOrErrorEvent(Deque<RefPtr<Node>>& queue, const AtomicString& eventName, bool shouldNotifyMediaElement)
{
while (!queue.isEmpty()) {
RefPtr<Node> node = queue.takeFirst();
if (!node)
node = documentElement();
// The dispatchEvent below may have blown away our documentElement.
if (!node)
continue;
// If the element was removed from our tree, also message the documentElement. Since we may
// have a document hierarchy, check that node isn't in another document.
if (!node->isConnected())
queue.append(documentElement());
#if ENABLE(VIDEO)
if (shouldNotifyMediaElement && is<HTMLMediaElement>(*node))
downcast<HTMLMediaElement>(*node).enteredOrExitedFullscreen();
#endif
node->dispatchEvent(Event::create(eventName, true, false));
}
}
void Document::fullScreenElementRemoved()
{
m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(false);
webkitCancelFullScreen();
}
void Document::removeFullScreenElementOfSubtree(Node& node, bool amongChildrenOnly)
{
if (!m_fullScreenElement)
return;
bool elementInSubtree = false;
if (amongChildrenOnly)
elementInSubtree = m_fullScreenElement->isDescendantOf(node);
else
elementInSubtree = (m_fullScreenElement == &node) || m_fullScreenElement->isDescendantOf(node);
if (elementInSubtree)
fullScreenElementRemoved();
}
bool Document::isAnimatingFullScreen() const
{
return m_isAnimatingFullScreen;
}
void Document::setAnimatingFullScreen(bool flag)
{
if (m_isAnimatingFullScreen == flag)
return;
m_isAnimatingFullScreen = flag;
if (m_fullScreenElement && m_fullScreenElement->isDescendantOf(*this)) {
m_fullScreenElement->invalidateStyleForSubtree();
scheduleForcedStyleRecalc();
}
}
void Document::clearFullscreenElementStack()
{
m_fullScreenElementStack.clear();
}
void Document::popFullscreenElementStack()
{
if (m_fullScreenElementStack.isEmpty())
return;
m_fullScreenElementStack.removeLast();
}
void Document::pushFullscreenElementStack(Element* element)
{
m_fullScreenElementStack.append(element);
}
void Document::addDocumentToFullScreenChangeEventQueue(Document* doc)
{
ASSERT(doc);
Node* target = doc->webkitFullscreenElement();
if (!target)
target = doc->webkitCurrentFullScreenElement();
if (!target)
target = doc;
m_fullScreenChangeEventTargetQueue.append(target);
}
#endif
#if ENABLE(POINTER_LOCK)
void Document::exitPointerLock()
{
Page* page = this->page();
if (!page)
return;
if (auto* target = page->pointerLockController().element()) {
if (&target->document() != this)
return;
}
page->pointerLockController().requestPointerUnlock();
}
#endif
void Document::decrementLoadEventDelayCount()
{
ASSERT(m_loadEventDelayCount);
--m_loadEventDelayCount;
if (frame() && !m_loadEventDelayCount && !m_loadEventDelayTimer.isActive())
m_loadEventDelayTimer.startOneShot(0_s);
}
void Document::loadEventDelayTimerFired()
{
// FIXME: Should the call to FrameLoader::checkLoadComplete be moved inside Document::checkCompleted?
// FIXME: Should this also call DocumentLoader::checkLoadComplete?
// FIXME: Not obvious why checkCompleted needs to go first. The order these are called is
// visible to WebKit clients, but it's more like a race than a well-defined relationship.
checkCompleted();
if (auto* frame = this->frame())
frame->loader().checkLoadComplete();
}
void Document::checkCompleted()
{
if (auto* frame = this->frame())
frame->loader().checkCompleted();
}
double Document::monotonicTimestamp() const
{
auto* loader = this->loader();
if (!loader)
return 0;
return loader->timing().secondsSinceStartTime(MonotonicTime::now()).seconds();
}
int Document::requestAnimationFrame(Ref<RequestAnimationFrameCallback>&& callback)
{
if (!m_scriptedAnimationController) {
#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
m_scriptedAnimationController = ScriptedAnimationController::create(*this, page() ? page()->chrome().displayID() : 0);
#else
m_scriptedAnimationController = ScriptedAnimationController::create(*this, 0);
#endif
// It's possible that the Page may have suspended scripted animations before
// we were created. We need to make sure that we don't start up the animation
// controller on a background tab, for example.
if (!page() || page()->scriptedAnimationsSuspended())
m_scriptedAnimationController->suspend();
if (page() && page()->isLowPowerModeEnabled())
m_scriptedAnimationController->addThrottlingReason(ScriptedAnimationController::ThrottlingReason::LowPowerMode);
if (!topOrigin().canAccess(securityOrigin()) && !hasHadUserInteraction())
m_scriptedAnimationController->addThrottlingReason(ScriptedAnimationController::ThrottlingReason::NonInteractedCrossOriginFrame);
}
return m_scriptedAnimationController->registerCallback(WTFMove(callback));
}
void Document::cancelAnimationFrame(int id)
{
if (!m_scriptedAnimationController)
return;
m_scriptedAnimationController->cancelCallback(id);
}
void Document::clearScriptedAnimationController()
{
// FIXME: consider using ActiveDOMObject.
if (m_scriptedAnimationController)
m_scriptedAnimationController->clearDocumentPointer();
m_scriptedAnimationController = nullptr;
}
void Document::wheelEventHandlersChanged()
{
Page* page = this->page();
if (!page)
return;
if (FrameView* frameView = view()) {
if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->frameViewEventTrackingRegionsChanged(*frameView);
}
bool haveHandlers = m_wheelEventTargets && !m_wheelEventTargets->isEmpty();
page->chrome().client().wheelEventHandlersChanged(haveHandlers);
}
void Document::didAddWheelEventHandler(Node& node)
{
if (!m_wheelEventTargets)
m_wheelEventTargets = std::make_unique<EventTargetSet>();
m_wheelEventTargets->add(&node);
wheelEventHandlersChanged();
if (Frame* frame = this->frame())
DebugPageOverlays::didChangeEventHandlers(*frame);
}
HttpEquivPolicy Document::httpEquivPolicy() const
{
if (shouldEnforceContentDispositionAttachmentSandbox())
return HttpEquivPolicy::DisabledByContentDispositionAttachmentSandbox;
if (page() && !page()->settings().httpEquivEnabled())
return HttpEquivPolicy::DisabledBySettings;
return HttpEquivPolicy::Enabled;
}
static bool removeHandlerFromSet(EventTargetSet& handlerSet, Node& node, EventHandlerRemoval removal)
{
switch (removal) {
case EventHandlerRemoval::One:
return handlerSet.remove(&node);
case EventHandlerRemoval::All:
return handlerSet.removeAll(&node);
}
return false;
}
void Document::didRemoveWheelEventHandler(Node& node, EventHandlerRemoval removal)
{
if (!m_wheelEventTargets)
return;
if (!removeHandlerFromSet(*m_wheelEventTargets, node, removal))
return;
wheelEventHandlersChanged();
if (Frame* frame = this->frame())
DebugPageOverlays::didChangeEventHandlers(*frame);
}
unsigned Document::wheelEventHandlerCount() const
{
if (!m_wheelEventTargets)
return 0;
unsigned count = 0;
for (auto& handler : *m_wheelEventTargets)
count += handler.value;
return count;
}
void Document::didAddTouchEventHandler(Node& handler)
{
#if ENABLE(TOUCH_EVENTS)
if (!m_touchEventTargets)
m_touchEventTargets = std::make_unique<EventTargetSet>();
m_touchEventTargets->add(&handler);
if (Document* parent = parentDocument()) {
parent->didAddTouchEventHandler(*this);
return;
}
#else
UNUSED_PARAM(handler);
#endif
}
void Document::didRemoveTouchEventHandler(Node& handler, EventHandlerRemoval removal)
{
#if ENABLE(TOUCH_EVENTS)
if (!m_touchEventTargets)
return;
removeHandlerFromSet(*m_touchEventTargets, handler, removal);
if (Document* parent = parentDocument())
parent->didRemoveTouchEventHandler(*this);
#else
UNUSED_PARAM(handler);
UNUSED_PARAM(removal);
#endif
}
void Document::didRemoveEventTargetNode(Node& handler)
{
#if ENABLE(TOUCH_EVENTS)
if (m_touchEventTargets) {
m_touchEventTargets->removeAll(&handler);
if ((&handler == this || m_touchEventTargets->isEmpty()) && parentDocument())
parentDocument()->didRemoveEventTargetNode(*this);
}
#endif
if (m_wheelEventTargets) {
m_wheelEventTargets->removeAll(&handler);
if ((&handler == this || m_wheelEventTargets->isEmpty()) && parentDocument())
parentDocument()->didRemoveEventTargetNode(*this);
}
}
unsigned Document::touchEventHandlerCount() const
{
#if ENABLE(TOUCH_EVENTS)
if (!m_touchEventTargets)
return 0;
unsigned count = 0;
for (auto& handler : *m_touchEventTargets)
count += handler.value;
return count;
#else
return 0;
#endif
}
LayoutRect Document::absoluteEventHandlerBounds(bool& includesFixedPositionElements)
{
includesFixedPositionElements = false;
if (RenderView* renderView = this->renderView())
return renderView->documentRect();
return LayoutRect();
}
Document::RegionFixedPair Document::absoluteRegionForEventTargets(const EventTargetSet* targets)
{
LayoutDisallowedScope layoutDisallowedScope(LayoutDisallowedScope::Reason::ReentrancyAvoidance);
if (!targets)
return RegionFixedPair(Region(), false);
Region targetRegion;
bool insideFixedPosition = false;
for (auto& keyValuePair : *targets) {
LayoutRect rootRelativeBounds;
if (is<Document>(keyValuePair.key)) {
Document* document = downcast<Document>(keyValuePair.key);
if (document == this)
rootRelativeBounds = absoluteEventHandlerBounds(insideFixedPosition);
else if (Element* element = document->ownerElement())
rootRelativeBounds = element->absoluteEventHandlerBounds(insideFixedPosition);
} else if (is<Element>(keyValuePair.key)) {
Element* element = downcast<Element>(keyValuePair.key);
if (is<HTMLBodyElement>(element)) {
// For the body, just use the document bounds.
// The body may not cover this whole area, but it's OK for this region to be an overestimate.
rootRelativeBounds = absoluteEventHandlerBounds(insideFixedPosition);
} else
rootRelativeBounds = element->absoluteEventHandlerBounds(insideFixedPosition);
}
if (!rootRelativeBounds.isEmpty())
targetRegion.unite(Region(enclosingIntRect(rootRelativeBounds)));
}
return RegionFixedPair(targetRegion, insideFixedPosition);
}
void Document::updateLastHandledUserGestureTimestamp(MonotonicTime time)
{
m_lastHandledUserGestureTimestamp = time;
if (static_cast<bool>(time) && m_scriptedAnimationController) {
// It's OK to always remove NonInteractedCrossOriginFrame even if this frame isn't cross-origin.
m_scriptedAnimationController->removeThrottlingReason(ScriptedAnimationController::ThrottlingReason::NonInteractedCrossOriginFrame);
}
// DOM Timer alignment may depend on the user having interacted with the document.
didChangeTimerAlignmentInterval();
if (HTMLFrameOwnerElement* element = ownerElement())
element->document().updateLastHandledUserGestureTimestamp(time);
}
bool Document::processingUserGestureForMedia() const
{
if (UserGestureIndicator::processingUserGestureForMedia())
return true;
if (settings().mediaUserGestureInheritsFromDocument())
return topDocument().hasHadUserInteraction();
auto* loader = this->loader();
if (loader && loader->allowedAutoplayQuirks().contains(AutoplayQuirk::InheritedUserGestures))
return topDocument().hasHadUserInteraction();
return false;
}
void Document::startTrackingStyleRecalcs()
{
m_styleRecalcCount = 0;
}
unsigned Document::styleRecalcCount() const
{
return m_styleRecalcCount;
}
DocumentLoader* Document::loader() const
{
if (!m_frame)
return nullptr;
DocumentLoader* loader = m_frame->loader().documentLoader();
if (!loader)
return nullptr;
if (m_frame->document() != this)
return nullptr;
return loader;
}
#if ENABLE(CSS_DEVICE_ADAPTATION)
IntSize Document::initialViewportSize() const
{
if (!view())
return IntSize();
return view()->initialViewportSize();
}
#endif
Element* eventTargetElementForDocument(Document* document)
{
if (!document)
return nullptr;
Element* element = document->focusedElement();
if (!element && is<PluginDocument>(*document))
element = downcast<PluginDocument>(*document).pluginElement();
if (!element && is<HTMLDocument>(*document))
element = document->bodyOrFrameset();
if (!element)
element = document->documentElement();
return element;
}
void Document::convertAbsoluteToClientQuads(Vector<FloatQuad>& quads, const RenderStyle& style)
{
if (!view())
return;
const auto& frameView = *view();
float inverseFrameScale = frameView.absoluteToDocumentScaleFactor(style.effectiveZoom());
auto documentToClientOffset = frameView.documentToClientOffset();
for (auto& quad : quads) {
if (inverseFrameScale != 1)
quad.scale(inverseFrameScale);
quad.move(documentToClientOffset);
}
}
void Document::convertAbsoluteToClientRects(Vector<FloatRect>& rects, const RenderStyle& style)
{
if (!view())
return;
auto& frameView = *view();
float inverseFrameScale = frameView.absoluteToDocumentScaleFactor(style.effectiveZoom());
auto documentToClientOffset = frameView.documentToClientOffset();
for (auto& rect : rects) {
if (inverseFrameScale != 1)
rect.scale(inverseFrameScale);
rect.move(documentToClientOffset);
}
}
void Document::convertAbsoluteToClientRect(FloatRect& rect, const RenderStyle& style)
{
if (!view())
return;
const auto& frameView = *view();
rect = frameView.absoluteToDocumentRect(rect, style.effectiveZoom());
rect = frameView.documentToClientRect(rect);
}
bool Document::hasActiveParser()
{
return m_activeParserCount || (m_parser && m_parser->processingData());
}
void Document::decrementActiveParserCount()
{
--m_activeParserCount;
if (!frame())
return;
// FIXME: We should call DocumentLoader::checkLoadComplete as well here,
// but it seems to cause http/tests/security/feed-urls-from-remote.html
// to timeout on Mac WK1; see http://webkit.org/b/110554 and http://webkit.org/b/110401.
frame()->loader().checkLoadComplete();
}
static RenderElement* nearestCommonHoverAncestor(RenderElement* obj1, RenderElement* obj2)
{
if (!obj1 || !obj2)
return nullptr;
for (RenderElement* currObj1 = obj1; currObj1; currObj1 = currObj1->hoverAncestor()) {
for (RenderElement* currObj2 = obj2; currObj2; currObj2 = currObj2->hoverAncestor()) {
if (currObj1 == currObj2)
return currObj1;
}
}
return nullptr;
}
void Document::updateHoverActiveState(const HitTestRequest& request, Element* innerElement)
{
ASSERT(!request.readOnly());
Element* innerElementInDocument = innerElement;
while (innerElementInDocument && &innerElementInDocument->document() != this) {
innerElementInDocument->document().updateHoverActiveState(request, innerElementInDocument);
innerElementInDocument = innerElementInDocument->document().ownerElement();
}
Element* oldActiveElement = m_activeElement.get();
if (oldActiveElement && !request.active()) {
// We are clearing the :active chain because the mouse has been released.
for (Element* currentElement = oldActiveElement; currentElement; currentElement = currentElement->parentElementInComposedTree()) {
currentElement->setActive(false);
m_userActionElements.setInActiveChain(*currentElement, false);
}
m_activeElement = nullptr;
} else {
Element* newActiveElement = innerElementInDocument;
if (!oldActiveElement && newActiveElement && request.active() && !request.touchMove()) {
// We are setting the :active chain and freezing it. If future moves happen, they
// will need to reference this chain.
for (RenderElement* curr = newActiveElement->renderer(); curr; curr = curr->parent()) {
Element* element = curr->element();
if (!element || curr->isTextOrLineBreak())
continue;
m_userActionElements.setInActiveChain(*element, true);
}
m_activeElement = newActiveElement;
}
}
// If the mouse has just been pressed, set :active on the chain. Those (and only those)
// nodes should remain :active until the mouse is released.
bool allowActiveChanges = !oldActiveElement && m_activeElement;
// If the mouse is down and if this is a mouse move event, we want to restrict changes in
// :hover/:active to only apply to elements that are in the :active chain that we froze
// at the time the mouse went down.
bool mustBeInActiveChain = request.active() && request.move();
RefPtr<Element> oldHoveredElement = WTFMove(m_hoveredElement);
// A touch release does not set a new hover target; clearing the element we're working with
// will clear the chain of hovered elements all the way to the top of the tree.
if (request.touchRelease())
innerElementInDocument = nullptr;
// Check to see if the hovered Element has changed.
// If it hasn't, we do not need to do anything.
Element* newHoveredElement = innerElementInDocument;
while (newHoveredElement && !newHoveredElement->renderer())
newHoveredElement = newHoveredElement->parentElementInComposedTree();
m_hoveredElement = newHoveredElement;
// We have two different objects. Fetch their renderers.
RenderElement* oldHoverObj = oldHoveredElement ? oldHoveredElement->renderer() : nullptr;
RenderElement* newHoverObj = newHoveredElement ? newHoveredElement->renderer() : nullptr;
// Locate the common ancestor render object for the two renderers.
RenderElement* ancestor = nearestCommonHoverAncestor(oldHoverObj, newHoverObj);
Vector<RefPtr<Element>, 32> elementsToRemoveFromChain;
Vector<RefPtr<Element>, 32> elementsToAddToChain;
if (oldHoverObj != newHoverObj) {
// If the old hovered element is not nil but it's renderer is, it was probably detached as part of the :hover style
// (for instance by setting display:none in the :hover pseudo-class). In this case, the old hovered element (and its ancestors)
// must be updated, to ensure it's normal style is re-applied.
if (oldHoveredElement && !oldHoverObj) {
for (Element* element = oldHoveredElement.get(); element; element = element->parentElementInComposedTree()) {
if (!mustBeInActiveChain || element->inActiveChain())
elementsToRemoveFromChain.append(element);
}
}
// The old hover path only needs to be cleared up to (and not including) the common ancestor;
for (RenderElement* curr = oldHoverObj; curr && curr != ancestor; curr = curr->hoverAncestor()) {
Element* element = curr->element();
if (!element)
continue;
if (!mustBeInActiveChain || element->inActiveChain())
elementsToRemoveFromChain.append(element);
}
// Unset hovered nodes in sub frame documents if the old hovered node was a frame owner.
if (is<HTMLFrameOwnerElement>(oldHoveredElement)) {
if (Document* contentDocument = downcast<HTMLFrameOwnerElement>(*oldHoveredElement).contentDocument())
contentDocument->updateHoverActiveState(request, nullptr);
}
}
// Now set the hover state for our new object up to the root.
for (RenderElement* curr = newHoverObj; curr; curr = curr->hoverAncestor()) {
Element* element = curr->element();
if (!element)
continue;
if (!mustBeInActiveChain || element->inActiveChain())
elementsToAddToChain.append(element);
}
for (auto& element : elementsToRemoveFromChain)
element->setHovered(false);
bool sawCommonAncestor = false;
for (auto& element : elementsToAddToChain) {
if (allowActiveChanges)
element->setActive(true);
if (ancestor && element == ancestor->element())
sawCommonAncestor = true;
if (!sawCommonAncestor) {
// Elements after the common hover ancestor does not change hover state, but are iterated over because they may change active state.
element->setHovered(true);
}
}
}
bool Document::haveStylesheetsLoaded() const
{
return !styleScope().hasPendingSheets() || m_ignorePendingStylesheets;
}
Locale& Document::getCachedLocale(const AtomicString& locale)
{
AtomicString localeKey = locale;
if (locale.isEmpty() || !settings().langAttributeAwareFormControlUIEnabled())
localeKey = defaultLanguage();
LocaleIdentifierToLocaleMap::AddResult result = m_localeCache.add(localeKey, nullptr);
if (result.isNewEntry)
result.iterator->value = Locale::create(localeKey);
return *(result.iterator->value);
}
Document& Document::ensureTemplateDocument()
{
if (const Document* document = templateDocument())
return const_cast<Document&>(*document);
if (isHTMLDocument())
m_templateDocument = HTMLDocument::create(nullptr, blankURL());
else
m_templateDocument = Document::create(nullptr, blankURL());
m_templateDocument->setContextDocument(contextDocument());
m_templateDocument->setTemplateDocumentHost(this); // balanced in dtor.
return *m_templateDocument;
}
Ref<FontFaceSet> Document::fonts()
{
updateStyleIfNeeded();
return fontSelector().fontFaceSet();
}
float Document::deviceScaleFactor() const
{
float deviceScaleFactor = 1.0;
if (Page* documentPage = page())
deviceScaleFactor = documentPage->deviceScaleFactor();
return deviceScaleFactor;
}
bool Document::useSystemAppearance() const
{
bool useSystemAppearance = false;
if (Page* documentPage = page())
useSystemAppearance = documentPage->useSystemAppearance();
return useSystemAppearance;
}
OptionSet<StyleColor::Options> Document::styleColorOptions() const
{
OptionSet<StyleColor::Options> options;
if (useSystemAppearance())
options |= StyleColor::Options::UseSystemAppearance;
return options;
}
void Document::didAssociateFormControl(Element* element)
{
if (!frame() || !frame()->page() || !frame()->page()->chrome().client().shouldNotifyOnFormChanges())
return;
m_associatedFormControls.add(element);
if (!m_didAssociateFormControlsTimer.isActive())
m_didAssociateFormControlsTimer.startOneShot(0_s);
}
void Document::didAssociateFormControlsTimerFired()
{
if (!frame() || !frame()->page())
return;
frame()->page()->chrome().client().didAssociateFormControls(copyToVector(m_associatedFormControls));
m_associatedFormControls.clear();
}
void Document::setCachedDOMCookies(const String& cookies)
{
ASSERT(!isDOMCookieCacheValid());
m_cachedDOMCookies = cookies;
// The cookie cache is valid at most until we go back to the event loop.
m_cookieCacheExpiryTimer.startOneShot(0_s);
}
void Document::invalidateDOMCookieCache()
{
m_cookieCacheExpiryTimer.stop();
m_cachedDOMCookies = String();
}
void Document::didLoadResourceSynchronously()
{
// Synchronous resources loading can set cookies so we invalidate the cookies cache
// in this case, to be safe.
invalidateDOMCookieCache();
}
void Document::ensurePlugInsInjectedScript(DOMWrapperWorld& world)
{
if (m_hasInjectedPlugInsScript)
return;
// Use the JS file provided by the Chrome client, or fallback to the default one.
String jsString = page()->chrome().client().plugInExtraScript();
if (!jsString)
jsString = String(plugInsJavaScript, sizeof(plugInsJavaScript));
frame()->script().evaluateInWorld(ScriptSourceCode(jsString), world);
m_hasInjectedPlugInsScript = true;
}
#if ENABLE(SUBTLE_CRYPTO)
bool Document::wrapCryptoKey(const Vector<uint8_t>& key, Vector<uint8_t>& wrappedKey)
{
Page* page = this->page();
if (!page)
return false;
return page->chrome().client().wrapCryptoKey(key, wrappedKey);
}
bool Document::unwrapCryptoKey(const Vector<uint8_t>& wrappedKey, Vector<uint8_t>& key)
{
Page* page = this->page();
if (!page)
return false;
return page->chrome().client().unwrapCryptoKey(wrappedKey, key);
}
#endif // ENABLE(SUBTLE_CRYPTO)
Element* Document::activeElement()
{
if (Element* element = treeScope().focusedElementInScope())
return element;
return bodyOrFrameset();
}
bool Document::hasFocus() const
{
Page* page = this->page();
if (!page || !page->focusController().isActive())
return false;
if (Frame* focusedFrame = page->focusController().focusedFrame()) {
if (focusedFrame->tree().isDescendantOf(frame()))
return true;
}
return false;
}
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
static uint64_t nextPlaybackTargetClientContextId()
{
static uint64_t contextId = 0;
return ++contextId;
}
void Document::addPlaybackTargetPickerClient(MediaPlaybackTargetClient& client)
{
Page* page = this->page();
if (!page)
return;
// FIXME: change this back to an ASSERT once https://webkit.org/b/144970 is fixed.
if (m_clientToIDMap.contains(&client))
return;
uint64_t contextId = nextPlaybackTargetClientContextId();
m_clientToIDMap.add(&client, contextId);
m_idToClientMap.add(contextId, &client);
page->addPlaybackTargetPickerClient(contextId);
}
void Document::removePlaybackTargetPickerClient(MediaPlaybackTargetClient& client)
{
auto it = m_clientToIDMap.find(&client);
if (it == m_clientToIDMap.end())
return;
uint64_t clientId = it->value;
m_idToClientMap.remove(clientId);
m_clientToIDMap.remove(it);
Page* page = this->page();
if (!page)
return;
page->removePlaybackTargetPickerClient(clientId);
}
void Document::showPlaybackTargetPicker(MediaPlaybackTargetClient& client, bool isVideo)
{
Page* page = this->page();
if (!page)
return;
auto it = m_clientToIDMap.find(&client);
if (it == m_clientToIDMap.end())
return;
page->showPlaybackTargetPicker(it->value, view()->lastKnownMousePosition(), isVideo);
}
void Document::playbackTargetPickerClientStateDidChange(MediaPlaybackTargetClient& client, MediaProducer::MediaStateFlags state)
{
Page* page = this->page();
if (!page)
return;
auto it = m_clientToIDMap.find(&client);
if (it == m_clientToIDMap.end())
return;
page->playbackTargetPickerClientStateDidChange(it->value, state);
}
void Document::playbackTargetAvailabilityDidChange(uint64_t clientId, bool available)
{
auto it = m_idToClientMap.find(clientId);
if (it == m_idToClientMap.end())
return;
it->value->externalOutputDeviceAvailableDidChange(available);
}
void Document::setPlaybackTarget(uint64_t clientId, Ref<MediaPlaybackTarget>&& target)
{
auto it = m_idToClientMap.find(clientId);
if (it == m_idToClientMap.end())
return;
it->value->setPlaybackTarget(target.copyRef());
}
void Document::setShouldPlayToPlaybackTarget(uint64_t clientId, bool shouldPlay)
{
auto it = m_idToClientMap.find(clientId);
if (it == m_idToClientMap.end())
return;
it->value->setShouldPlayToPlaybackTarget(shouldPlay);
}
#endif // ENABLE(WIRELESS_PLAYBACK_TARGET)
#if ENABLE(MEDIA_SESSION)
MediaSession& Document::defaultMediaSession()
{
if (!m_defaultMediaSession)
m_defaultMediaSession = MediaSession::create(*scriptExecutionContext());
return *m_defaultMediaSession;
}
#endif
ShouldOpenExternalURLsPolicy Document::shouldOpenExternalURLsPolicyToPropagate() const
{
if (DocumentLoader* documentLoader = loader())
return documentLoader->shouldOpenExternalURLsPolicyToPropagate();
return ShouldOpenExternalURLsPolicy::ShouldNotAllow;
}
bool Document::shouldEnforceHTTP09Sandbox() const
{
if (m_isSynthesized || !m_frame)
return false;
DocumentLoader* documentLoader = m_frame->loader().activeDocumentLoader();
return documentLoader && documentLoader->response().isHTTP09();
}
#if USE(QUICK_LOOK)
bool Document::shouldEnforceQuickLookSandbox() const
{
if (m_isSynthesized || !m_frame)
return false;
DocumentLoader* documentLoader = m_frame->loader().activeDocumentLoader();
return documentLoader && documentLoader->response().isQuickLook();
}
void Document::applyQuickLookSandbox()
{
const URL& responseURL = m_frame->loader().activeDocumentLoader()->responseURL();
ASSERT(responseURL.protocolIs(QLPreviewProtocol()));
auto securityOrigin = SecurityOrigin::create(responseURL);
securityOrigin->setStorageBlockingPolicy(SecurityOrigin::BlockAllStorage);
setSecurityOriginPolicy(SecurityOriginPolicy::create(WTFMove(securityOrigin)));
static NeverDestroyed<String> quickLookCSP = makeString("default-src ", QLPreviewProtocol(), ": 'unsafe-inline'; base-uri 'none'; sandbox allow-same-origin allow-scripts");
RELEASE_ASSERT(contentSecurityPolicy());
// The sandbox directive is only allowed if the policy is from an HTTP header.
contentSecurityPolicy()->didReceiveHeader(quickLookCSP, ContentSecurityPolicyHeaderType::Enforce, ContentSecurityPolicy::PolicyFrom::HTTPHeader);
disableSandboxFlags(SandboxNavigation);
setReferrerPolicy(ReferrerPolicy::NoReferrer);
}
#endif
bool Document::shouldEnforceContentDispositionAttachmentSandbox() const
{
if (m_isSynthesized)
return false;
bool contentDispositionAttachmentSandboxEnabled = settings().contentDispositionAttachmentSandboxEnabled();
bool responseIsAttachment = false;
if (DocumentLoader* documentLoader = m_frame ? m_frame->loader().activeDocumentLoader() : nullptr)
responseIsAttachment = documentLoader->response().isAttachment();
return contentDispositionAttachmentSandboxEnabled && responseIsAttachment;
}
void Document::applyContentDispositionAttachmentSandbox()
{
ASSERT(shouldEnforceContentDispositionAttachmentSandbox());
setReferrerPolicy(ReferrerPolicy::NoReferrer);
if (!isMediaDocument())
enforceSandboxFlags(SandboxAll);
else
enforceSandboxFlags(SandboxOrigin);
}
void Document::addViewportDependentPicture(HTMLPictureElement& picture)
{
m_viewportDependentPictures.add(&picture);
}
void Document::removeViewportDependentPicture(HTMLPictureElement& picture)
{
m_viewportDependentPictures.remove(&picture);
}
const AtomicString& Document::dir() const
{
auto* documentElement = this->documentElement();
if (!is<HTMLHtmlElement>(documentElement))
return nullAtom();
return downcast<HTMLHtmlElement>(*documentElement).dir();
}
void Document::setDir(const AtomicString& value)
{
auto* documentElement = this->documentElement();
if (is<HTMLHtmlElement>(documentElement))
downcast<HTMLHtmlElement>(*documentElement).setDir(value);
}
DOMSelection* Document::getSelection()
{
return m_domWindow ? m_domWindow->getSelection() : nullptr;
}
void Document::didInsertInDocumentShadowRoot(ShadowRoot& shadowRoot)
{
ASSERT(shadowRoot.isConnected());
ASSERT(!m_inDocumentShadowRoots.contains(&shadowRoot));
m_inDocumentShadowRoots.add(&shadowRoot);
}
void Document::didRemoveInDocumentShadowRoot(ShadowRoot& shadowRoot)
{
ASSERT(m_inDocumentShadowRoots.contains(&shadowRoot));
m_inDocumentShadowRoots.remove(&shadowRoot);
}
void Document::orientationChanged(int orientation)
{
LOG(Events, "Document %p orientationChanged - orientation %d", this, orientation);
dispatchWindowEvent(Event::create(eventNames().orientationchangeEvent, false, false));
m_orientationNotifier.orientationChanged(orientation);
}
void Document::notifyMediaCaptureOfVisibilityChanged()
{
#if ENABLE(MEDIA_STREAM)
if (!page())
return;
RealtimeMediaSourceCenter::singleton().setVideoCapturePageState(hidden(), page()->isMediaCaptureMuted());
#endif
}
#if ENABLE(MEDIA_STREAM)
void Document::stopMediaCapture()
{
MediaStreamRegistry::shared().forEach([this](MediaStream& stream) {
if (stream.document() == this)
stream.endCaptureTracks();
});
}
void Document::registerForMediaStreamStateChangeCallbacks(HTMLMediaElement& element)
{
m_mediaStreamStateChangeElements.add(&element);
}
void Document::unregisterForMediaStreamStateChangeCallbacks(HTMLMediaElement& element)
{
m_mediaStreamStateChangeElements.remove(&element);
}
void Document::mediaStreamCaptureStateChanged()
{
if (!MediaProducer::isCapturing(m_mediaState))
return;
for (auto* mediaElement : m_mediaStreamStateChangeElements)
mediaElement->mediaStreamCaptureStarted();
}
#endif
void Document::addApplicationStateChangeListener(ApplicationStateChangeListener& listener)
{
m_applicationStateChangeListeners.add(&listener);
}
void Document::removeApplicationStateChangeListener(ApplicationStateChangeListener& listener)
{
m_applicationStateChangeListeners.remove(&listener);
}
void Document::forEachApplicationStateChangeListener(const Function<void(ApplicationStateChangeListener&)>& functor)
{
for (auto* listener : m_applicationStateChangeListeners)
functor(*listener);
}
const AtomicString& Document::bgColor() const
{
auto* bodyElement = body();
if (!bodyElement)
return emptyAtom();
return bodyElement->attributeWithoutSynchronization(bgcolorAttr);
}
void Document::setBgColor(const String& value)
{
if (auto* bodyElement = body())
bodyElement->setAttributeWithoutSynchronization(bgcolorAttr, value);
}
const AtomicString& Document::fgColor() const
{
auto* bodyElement = body();
if (!bodyElement)
return emptyAtom();
return bodyElement->attributeWithoutSynchronization(textAttr);
}
void Document::setFgColor(const String& value)
{
if (auto* bodyElement = body())
bodyElement->setAttributeWithoutSynchronization(textAttr, value);
}
const AtomicString& Document::alinkColor() const
{
auto* bodyElement = body();
if (!bodyElement)
return emptyAtom();
return bodyElement->attributeWithoutSynchronization(alinkAttr);
}
void Document::setAlinkColor(const String& value)
{
if (auto* bodyElement = body())
bodyElement->setAttributeWithoutSynchronization(alinkAttr, value);
}
const AtomicString& Document::linkColorForBindings() const
{
auto* bodyElement = body();
if (!bodyElement)
return emptyAtom();
return bodyElement->attributeWithoutSynchronization(linkAttr);
}
void Document::setLinkColorForBindings(const String& value)
{
if (auto* bodyElement = body())
bodyElement->setAttributeWithoutSynchronization(linkAttr, value);
}
const AtomicString& Document::vlinkColor() const
{
auto* bodyElement = body();
if (!bodyElement)
return emptyAtom();
return bodyElement->attributeWithoutSynchronization(vlinkAttr);
}
void Document::setVlinkColor(const String& value)
{
if (auto* bodyElement = body())
bodyElement->setAttributeWithoutSynchronization(vlinkAttr, value);
}
Logger& Document::logger()
{
if (!m_logger) {
m_logger = Logger::create(this);
m_logger->setEnabled(this, sessionID().isAlwaysOnLoggingAllowed());
m_logger->addObserver(*this);
}
return *m_logger;
}
void Document::hasStorageAccess(Ref<DeferredPromise>&& promise)
{
ASSERT(settings().storageAccessAPIEnabled());
#if HAVE(CFNETWORK_STORAGE_PARTITIONING)
if (hasFrameSpecificStorageAccess()) {
promise->resolve<IDLBoolean>(true);
return;
}
if (!m_frame || securityOrigin().isUnique()) {
promise->resolve<IDLBoolean>(false);
return;
}
if (m_frame->isMainFrame()) {
promise->resolve<IDLBoolean>(true);
return;
}
auto& securityOrigin = this->securityOrigin();
auto& topSecurityOrigin = topDocument().securityOrigin();
if (securityOrigin.equal(&topSecurityOrigin)) {
promise->resolve<IDLBoolean>(true);
return;
}
auto frameID = m_frame->loader().client().frameID();
auto pageID = m_frame->loader().client().pageID();
if (!frameID || !pageID) {
promise->reject();
return;
}
if (Page* page = this->page()) {
auto iframeHost = securityOrigin.host();
auto topHost = topSecurityOrigin.host();
page->chrome().client().hasStorageAccess(WTFMove(iframeHost), WTFMove(topHost), frameID.value(), pageID.value(), [documentReference = m_weakFactory.createWeakPtr(*this), promise = WTFMove(promise)] (bool hasAccess) {
Document* document = documentReference.get();
if (!document)
return;
promise->resolve<IDLBoolean>(hasAccess);
});
return;
}
#endif
promise->reject();
}
void Document::requestStorageAccess(Ref<DeferredPromise>&& promise)
{
ASSERT(settings().storageAccessAPIEnabled());
#if HAVE(CFNETWORK_STORAGE_PARTITIONING)
if (hasFrameSpecificStorageAccess()) {
promise->resolve();
return;
}
if (!m_frame || securityOrigin().isUnique()) {
promise->reject();
return;
}
if (m_frame->isMainFrame()) {
promise->resolve();
return;
}
auto& topDocument = this->topDocument();
auto& topSecurityOrigin = topDocument.securityOrigin();
auto& securityOrigin = this->securityOrigin();
if (securityOrigin.equal(&topSecurityOrigin)) {
promise->resolve();
return;
}
// If there is a sandbox, it has to allow the storage access API to be called.
if (sandboxFlags() != SandboxNone && isSandboxed(SandboxStorageAccessByUserActivation)) {
promise->reject();
return;
}
// The iframe has to be a direct child of the top document.
if (&topDocument != parentDocument()) {
promise->reject();
return;
}
if (!UserGestureIndicator::processingUserGesture()) {
promise->reject();
return;
}
auto iframeHost = securityOrigin.host();
auto topHost = topSecurityOrigin.host();
Page* page = this->page();
auto frameID = m_frame->loader().client().frameID();
auto pageID = m_frame->loader().client().pageID();
if (!page || !frameID || !pageID) {
promise->reject();
return;
}
page->chrome().client().requestStorageAccess(WTFMove(iframeHost), WTFMove(topHost), frameID.value(), pageID.value(), [documentReference = m_weakFactory.createWeakPtr(*this), promise = WTFMove(promise)] (bool wasGranted) {
Document* document = documentReference.get();
if (!document)
return;
if (wasGranted) {
document->setHasFrameSpecificStorageAccess(true);
promise->resolve();
} else
promise->reject();
});
#else
promise->reject();
#endif
}
#if HAVE(CFNETWORK_STORAGE_PARTITIONING)
bool Document::hasFrameSpecificStorageAccess() const
{
return m_frame->loader().client().hasFrameSpecificStorageAccess();
}
void Document::setHasFrameSpecificStorageAccess(bool value)
{
m_frame->loader().client().setHasFrameSpecificStorageAccess(value);
}
bool Document::hasRequestedPageSpecificStorageAccessWithUserInteraction(const String& primaryDomain)
{
return m_primaryDomainRequestedPageSpecificStorageAccessWithUserInteraction == primaryDomain;
}
void Document::setHasRequestedPageSpecificStorageAccessWithUserInteraction(const String& primaryDomain)
{
m_primaryDomainRequestedPageSpecificStorageAccessWithUserInteraction = primaryDomain;
}
#endif
void Document::setConsoleMessageListener(RefPtr<StringCallback>&& listener)
{
m_consoleMessageListener = listener;
}
DocumentTimeline& Document::timeline()
{
if (!m_timeline)
m_timeline = DocumentTimeline::create(*this, page() ? page()->chrome().displayID() : 0);
return *m_timeline;
}
Vector<RefPtr<WebAnimation>> Document::getAnimations()
{
// FIXME: Filter and order the list as specified (webkit.org/b/179535).
// For the list of animations to be current, we need to account for any pending CSS changes,
// such as updates to CSS Animations and CSS Transitions.
updateStyleIfNeeded();
Vector<RefPtr<WebAnimation>> animations;
if (m_timeline) {
for (auto& animation : m_timeline->animations()) {
if (animation->canBeListed() && is<KeyframeEffectReadOnly>(animation->effect())) {
if (auto* target = downcast<KeyframeEffectReadOnly>(animation->effect())->target()) {
if (target->isDescendantOf(this))
animations.append(animation);
}
}
}
}
return animations;
}
#if ENABLE(ATTACHMENT_ELEMENT)
void Document::didInsertAttachmentElement(HTMLAttachmentElement& attachment)
{
auto identifier = attachment.uniqueIdentifier();
if (identifier.isEmpty() || m_attachmentIdentifierToElementMap.contains(identifier)) {
identifier = createCanonicalUUIDString();
attachment.setUniqueIdentifier(identifier);
}
m_attachmentIdentifierToElementMap.set(identifier, attachment);
if (frame())
frame()->editor().didInsertAttachmentElement(attachment);
}
void Document::didRemoveAttachmentElement(HTMLAttachmentElement& attachment)
{
auto identifier = attachment.uniqueIdentifier();
if (!identifier)
return;
m_attachmentIdentifierToElementMap.remove(identifier);
if (frame())
frame()->editor().didRemoveAttachmentElement(attachment);
}
RefPtr<HTMLAttachmentElement> Document::attachmentForIdentifier(const String& identifier) const
{
return m_attachmentIdentifierToElementMap.get(identifier);
}
#endif // ENABLE(ATTACHMENT_ELEMENT)
static MessageSource messageSourceForWTFLogChannel(const WTFLogChannel& channel)
{
static const NeverDestroyed<String> mediaChannel = MAKE_STATIC_STRING_IMPL("media");
static const NeverDestroyed<String> webrtcChannel = MAKE_STATIC_STRING_IMPL("webrtc");
if (equalIgnoringASCIICase(mediaChannel, channel.name))
return MessageSource::Media;
if (equalIgnoringASCIICase(webrtcChannel, channel.name))
return MessageSource::WebRTC;
ASSERT_NOT_REACHED();
return MessageSource::Other;
}
static MessageLevel messageLevelFromWTFLogLevel(WTFLogLevel level)
{
switch (level) {
case WTFLogLevelAlways:
return MessageLevel::Log;
case WTFLogLevelError:
return MessageLevel::Error;
break;
case WTFLogLevelWarning:
return MessageLevel::Warning;
break;
case WTFLogLevelInfo:
return MessageLevel::Info;
break;
case WTFLogLevelDebug:
return MessageLevel::Debug;
break;
}
ASSERT_NOT_REACHED();
return MessageLevel::Log;
}
void Document::didLogMessage(const WTFLogChannel& channel, WTFLogLevel level, Vector<JSONLogValue>&& logMessages)
{
if (!page())
return;
ASSERT(sessionID().isAlwaysOnLoggingAllowed());
m_logMessageTaskQueue.enqueueTask([this, channel, level, logMessages = WTFMove(logMessages)]() mutable {
if (!page())
return;
auto messageSource = messageSourceForWTFLogChannel(channel);
auto messageLevel = messageLevelFromWTFLogLevel(level);
auto message = std::make_unique<Inspector::ConsoleMessage>(messageSource, MessageType::Log, messageLevel, WTFMove(logMessages), mainWorldExecState(frame()));
addConsoleMessage(WTFMove(message));
});
}
#if ENABLE(SERVICE_WORKER)
void Document::setServiceWorkerConnection(SWClientConnection* serviceWorkerConnection)
{
if (m_serviceWorkerConnection == serviceWorkerConnection || m_hasPreparedForDestruction || m_isSuspended)
return;
if (m_serviceWorkerConnection)
m_serviceWorkerConnection->unregisterServiceWorkerClient(identifier());
m_serviceWorkerConnection = serviceWorkerConnection;
if (!m_serviceWorkerConnection)
return;
auto controllingServiceWorkerRegistrationIdentifier = activeServiceWorker() ? std::make_optional<ServiceWorkerRegistrationIdentifier>(activeServiceWorker()->registrationIdentifier()) : std::nullopt;
m_serviceWorkerConnection->registerServiceWorkerClient(topOrigin(), ServiceWorkerClientData::from(*this, *serviceWorkerConnection), controllingServiceWorkerRegistrationIdentifier);
}
#endif
String Document::signedPublicKeyAndChallengeString(unsigned keySizeIndex, const String& challengeString, const URL& url)
{
Page* page = this->page();
if (!page)
return emptyString();
return page->chrome().client().signedPublicKeyAndChallengeString(keySizeIndex, challengeString, url);
}
} // namespace WebCore