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webkit / WebKit / a221fc7198c3ff32acdb138b84cf2bf9c4534ae5 / . / Source / WebCore / dom / Document.cpp
blob: 572a70622b5f2ff18725d74c85fd814480a1432f [file] [log] [blame]
/*
* 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, 2005, 2006, 2007, 2008, 2009, 2011, 2012, 2013 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 "AnimationController.h"
#include "Attr.h"
#include "Attribute.h"
#include "CDATASection.h"
#include "CSSStyleDeclaration.h"
#include "CSSStyleSheet.h"
#include "CachedCSSStyleSheet.h"
#include "CachedResourceLoader.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "Comment.h"
#include "ContentSecurityPolicy.h"
#include "CookieJar.h"
#include "DOMImplementation.h"
#include "DOMNamedFlowCollection.h"
#include "DOMWindow.h"
#include "DateComponents.h"
#include "Dictionary.h"
#include "DocumentEventQueue.h"
#include "DocumentFragment.h"
#include "DocumentLoader.h"
#include "DocumentMarkerController.h"
#include "DocumentSharedObjectPool.h"
#include "DocumentType.h"
#include "Editor.h"
#include "Element.h"
#include "ElementIterator.h"
#include "EntityReference.h"
#include "Event.h"
#include "EventFactory.h"
#include "EventHandler.h"
#include "EventListener.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "FontLoader.h"
#include "FormController.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "HashChangeEvent.h"
#include "HistogramSupport.h"
#include "History.h"
#include "HTMLAllCollection.h"
#include "HTMLAnchorElement.h"
#include "HTMLBaseElement.h"
#include "HTMLBodyElement.h"
#include "HTMLCanvasElement.h"
#include "HTMLCollection.h"
#include "HTMLDocument.h"
#include "HTMLElementFactory.h"
#include "HTMLFormControlElement.h"
#include "HTMLFrameOwnerElement.h"
#include "HTMLFrameSetElement.h"
#include "HTMLHeadElement.h"
#include "HTMLIFrameElement.h"
#include "HTMLImageElement.h"
#include "HTMLLinkElement.h"
#include "HTMLMediaElement.h"
#include "HTMLNameCollection.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "HTMLPlugInElement.h"
#include "HTMLScriptElement.h"
#include "HTMLStyleElement.h"
#include "HTMLTitleElement.h"
#include "HTTPParsers.h"
#include "HitTestRequest.h"
#include "HitTestResult.h"
#include "IconController.h"
#include "ImageLoader.h"
#include "InspectorCounters.h"
#include "InspectorInstrumentation.h"
#include "JSLazyEventListener.h"
#include "Language.h"
#include "Logging.h"
#include "MainFrame.h"
#include "MediaCanStartListener.h"
#include "MediaQueryList.h"
#include "MediaQueryMatcher.h"
#include "MouseEventWithHitTestResults.h"
#include "NameNodeList.h"
#include "NamedFlowCollection.h"
#include "NestingLevelIncrementer.h"
#include "NodeFilter.h"
#include "NodeIterator.h"
#include "NodeRareData.h"
#include "NodeWithIndex.h"
#include "Page.h"
#include "PageConsole.h"
#include "PageGroup.h"
#include "PageTransitionEvent.h"
#include "PlatformLocale.h"
#include "PlugInsResources.h"
#include "PluginDocument.h"
#include "PointerLockController.h"
#include "PopStateEvent.h"
#include "ProcessingInstruction.h"
#include "QualifiedName.h"
#include "RenderArena.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "ResourceLoader.h"
#include "RuntimeEnabledFeatures.h"
#include "SchemeRegistry.h"
#include "ScopedEventQueue.h"
#include "ScriptCallStack.h"
#include "ScriptController.h"
#include "ScriptRunner.h"
#include "ScriptSourceCode.h"
#include "ScriptValue.h"
#include "ScrollingCoordinator.h"
#include "SecurityOrigin.h"
#include "SecurityPolicy.h"
#include "SegmentedString.h"
#include "SelectorQuery.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "StylePropertySet.h"
#include "StyleResolver.h"
#include "StyleSheetContents.h"
#include "StyleSheetList.h"
#include "TextResourceDecoder.h"
#include "Timer.h"
#include "TransformSource.h"
#include "TreeWalker.h"
#include "VisitedLinkState.h"
#include "XMLDocumentParser.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include "XPathEvaluator.h"
#include "XPathExpression.h"
#include "XPathNSResolver.h"
#include "XPathResult.h"
#include "htmlediting.h"
#include <wtf/CurrentTime.h>
#include <wtf/MainThread.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Ref.h>
#include <wtf/TemporaryChange.h>
#include <wtf/text/StringBuffer.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderLayerCompositor.h"
#endif
#if ENABLE(SHARED_WORKERS)
#include "SharedWorkerRepository.h"
#endif
#if ENABLE(XSLT)
#include "XSLTProcessor.h"
#endif
#if ENABLE(SVG)
#include "SVGDocumentExtensions.h"
#include "SVGElementFactory.h"
#include "SVGNames.h"
#include "SVGSVGElement.h"
#endif
#if ENABLE(TOUCH_EVENTS)
#include "TouchList.h"
#endif
#if ENABLE(MATHML)
#include "MathMLElement.h"
#include "MathMLElementFactory.h"
#include "MathMLNames.h"
#endif
#if ENABLE(FULLSCREEN_API)
#include "RenderFullScreen.h"
#endif
#if ENABLE(REQUEST_ANIMATION_FRAME)
#include "RequestAnimationFrameCallback.h"
#include "ScriptedAnimationController.h"
#endif
#if ENABLE(IOS_TEXT_AUTOSIZING)
#include "TextAutoSizing.h"
#endif
#if ENABLE(TEXT_AUTOSIZING)
#include "TextAutosizer.h"
#endif
#if ENABLE(CSP_NEXT)
#include "DOMSecurityPolicy.h"
#endif
#if ENABLE(VIDEO_TRACK)
#include "CaptionUserPreferences.h"
#endif
using namespace WTF;
using namespace Unicode;
namespace WebCore {
using namespace HTMLNames;
// #define INSTRUMENT_LAYOUT_SCHEDULING 1
static const unsigned cMaxWriteRecursionDepth = 21;
// This amount of time must have elapsed before we will even consider scheduling a layout without a delay.
// FIXME: For faster machines this value can really be lowered to 200. 250 is adequate, but a little high
// for dual G5s. :)
static const int cLayoutScheduleThreshold = 250;
// 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 bool shouldInheritSecurityOriginFromOwner(const URL& url)
{
// http://www.whatwg.org/specs/web-apps/current-work/#origin-0
//
// If a Document has the address "about:blank"
// The origin of the Document is the origin it was assigned when its browsing context was created.
//
// Note: We generalize this to all "blank" URLs and invalid URLs because we
// treat all of these URLs as about:blank.
//
return url.isEmpty() || url.isBlankURL();
}
static Widget* widgetForElement(Element* focusedElement)
{
if (!focusedElement)
return nullptr;
auto renderer = focusedElement->renderer();
if (!renderer || !renderer->isWidget())
return nullptr;
return toRenderWidget(renderer)->widget();
}
static bool acceptsEditingFocus(Node* node)
{
ASSERT(node);
ASSERT(node->rendererIsEditable());
Node* root = node->rootEditableElement();
Frame* frame = node->document().frame();
if (!frame || !root)
return false;
return frame->editor().shouldBeginEditing(rangeOfContents(*root).get());
}
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;
static const double timeBeforeThrowingAwayStyleResolverAfterLastUseInSeconds = 30;
#if ENABLE(IOS_TEXT_AUTOSIZING)
void TextAutoSizingTraits::constructDeletedValue(TextAutoSizingKey& slot)
{
new (&slot) TextAutoSizingKey(TextAutoSizingKey::deletedKeyStyle(), TextAutoSizingKey::deletedKeyDoc());
}
bool TextAutoSizingTraits::isDeletedValue(const TextAutoSizingKey& value)
{
return value.style() == TextAutoSizingKey::deletedKeyStyle() && value.doc() == TextAutoSizingKey::deletedKeyDoc();
}
#endif
Document::Document(Frame* frame, const URL& url, unsigned documentClasses)
: ContainerNode(nullptr, CreateDocument)
, TreeScope(this)
, m_styleResolverThrowawayTimer(this, &Document::styleResolverThrowawayTimerFired, timeBeforeThrowingAwayStyleResolverAfterLastUseInSeconds)
, m_didCalculateStyleResolver(false)
, m_hasNodesWithPlaceholderStyle(false)
, m_needsNotifyRemoveAllPendingStylesheet(false)
, m_ignorePendingStylesheets(false)
, m_pendingSheetLayout(NoLayoutWithPendingSheets)
, m_frame(frame)
, m_activeParserCount(0)
, m_wellFormed(false)
, m_printing(false)
, m_paginatedForScreen(false)
, m_ignoreAutofocus(false)
, m_compatibilityMode(NoQuirksMode)
, m_compatibilityModeLocked(false)
, m_textColor(Color::black)
, m_domTreeVersion(++s_globalTreeVersion)
, m_listenerTypes(0)
, m_mutationObserverTypes(0)
, m_styleSheetCollection(*this)
, m_visitedLinkState(VisitedLinkState::create(*this))
, m_visuallyOrdered(false)
, m_readyState(Complete)
, m_bParsing(false)
, m_optimizedStyleSheetUpdateTimer(this, &Document::optimizedStyleSheetUpdateTimerFired)
, m_styleRecalcTimer(this, &Document::styleRecalcTimerFired)
, m_pendingStyleRecalcShouldForce(false)
, m_inStyleRecalc(false)
, m_closeAfterStyleRecalc(false)
, m_gotoAnchorNeededAfterStylesheetsLoad(false)
, m_frameElementsShouldIgnoreScrolling(false)
, m_containsValidityStyleRules(false)
, m_updateFocusAppearanceRestoresSelection(false)
, m_ignoreDestructiveWriteCount(0)
, m_titleSetExplicitly(false)
, m_markers(adoptPtr(new DocumentMarkerController))
, m_updateFocusAppearanceTimer(this, &Document::updateFocusAppearanceTimerFired)
, m_resetHiddenFocusElementTimer(this, &Document::resetHiddenFocusElementTimer)
, m_cssTarget(nullptr)
, m_processingLoadEvent(false)
, m_loadEventFinished(false)
, m_startTime(monotonicallyIncreasingTimeMS())
, m_overMinimumLayoutThreshold(false)
, m_scriptRunner(std::make_unique<ScriptRunner>(*this))
, m_xmlVersion(ASCIILiteral("1.0"))
, m_xmlStandalone(StandaloneUnspecified)
, m_hasXMLDeclaration(false)
, m_savedRenderView(nullptr)
, m_designMode(inherit)
#if ENABLE(DASHBOARD_SUPPORT) || ENABLE(DRAGGABLE_REGION)
, m_hasAnnotatedRegions(false)
, m_annotatedRegionsDirty(false)
#endif
, m_createRenderers(true)
, m_inPageCache(false)
, m_accessKeyMapValid(false)
, m_documentClasses(documentClasses)
, m_isViewSource(false)
, m_sawElementsInKnownNamespaces(false)
, m_isSrcdocDocument(false)
, m_renderView(nullptr)
, m_eventQueue(*this)
, m_weakFactory(this)
, m_idAttributeName(idAttr)
#if ENABLE(FULLSCREEN_API)
, m_areKeysEnabledInFullScreen(0)
, m_fullScreenRenderer(nullptr)
, m_fullScreenChangeDelayTimer(this, &Document::fullScreenChangeDelayTimerFired)
, m_isAnimatingFullScreen(false)
#endif
, m_loadEventDelayCount(0)
, m_loadEventDelayTimer(this, &Document::loadEventDelayTimerFired)
, m_referrerPolicy(ReferrerPolicyDefault)
, m_directionSetOnDocumentElement(false)
, m_writingModeSetOnDocumentElement(false)
, m_writeRecursionIsTooDeep(false)
, m_writeRecursionDepth(0)
, m_wheelEventHandlerCount(0)
, m_lastHandledUserGestureTimestamp(0)
, m_pendingTasksTimer(this, &Document::pendingTasksTimerFired)
, m_scheduledTasksAreSuspended(false)
, m_visualUpdatesAllowed(true)
, m_visualUpdatesSuppressionTimer(this, &Document::visualUpdatesSuppressionTimerFired)
, m_sharedObjectPoolClearTimer(this, &Document::sharedObjectPoolClearTimerFired)
#ifndef NDEBUG
, m_didDispatchViewportPropertiesChanged(false)
#endif
#if ENABLE(TEMPLATE_ELEMENT)
, m_templateDocumentHost(nullptr)
#endif
, m_didAssociateFormControlsTimer(this, &Document::didAssociateFormControlsTimerFired)
, m_hasInjectedPlugInsScript(false)
, m_renderTreeBeingDestroyed(false)
{
// 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);
if (m_frame)
m_cachedResourceLoader = &m_frame->loader().activeDocumentLoader()->cachedResourceLoader();
if (!m_cachedResourceLoader)
m_cachedResourceLoader = CachedResourceLoader::create(nullptr);
m_cachedResourceLoader->setDocument(this);
#if ENABLE(TEXT_AUTOSIZING)
m_textAutosizer = TextAutosizer::create(this);
#endif
resetLinkColor();
resetVisitedLinkColor();
resetActiveLinkColor();
initSecurityContext();
initDNSPrefetch();
for (unsigned i = 0; i < WTF_ARRAY_LENGTH(m_nodeListCounts); i++)
m_nodeListCounts[i] = 0;
InspectorCounters::incrementCounter(InspectorCounters::DocumentCounter);
}
static void histogramMutationEventUsage(const unsigned short& listenerTypes)
{
HistogramSupport::histogramEnumeration("DOMAPI.PerDocumentMutationEventUsage.DOMSubtreeModified", static_cast<bool>(listenerTypes & Document::DOMSUBTREEMODIFIED_LISTENER), 2);
HistogramSupport::histogramEnumeration("DOMAPI.PerDocumentMutationEventUsage.DOMNodeInserted", static_cast<bool>(listenerTypes & Document::DOMNODEINSERTED_LISTENER), 2);
HistogramSupport::histogramEnumeration("DOMAPI.PerDocumentMutationEventUsage.DOMNodeRemoved", static_cast<bool>(listenerTypes & Document::DOMNODEREMOVED_LISTENER), 2);
HistogramSupport::histogramEnumeration("DOMAPI.PerDocumentMutationEventUsage.DOMNodeRemovedFromDocument", static_cast<bool>(listenerTypes & Document::DOMNODEREMOVEDFROMDOCUMENT_LISTENER), 2);
HistogramSupport::histogramEnumeration("DOMAPI.PerDocumentMutationEventUsage.DOMNodeInsertedIntoDocument", static_cast<bool>(listenerTypes & Document::DOMNODEINSERTEDINTODOCUMENT_LISTENER), 2);
HistogramSupport::histogramEnumeration("DOMAPI.PerDocumentMutationEventUsage.DOMCharacterDataModified", static_cast<bool>(listenerTypes & Document::DOMCHARACTERDATAMODIFIED_LISTENER), 2);
}
#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
Document::~Document()
{
ASSERT(!renderView());
ASSERT(!m_inPageCache);
ASSERT(!m_savedRenderView);
ASSERT(m_ranges.isEmpty());
ASSERT(!m_styleRecalcTimer.isActive());
ASSERT(!m_parentTreeScope);
#if ENABLE(TEMPLATE_ELEMENT)
if (m_templateDocument)
m_templateDocument->setTemplateDocumentHost(nullptr); // balanced in templateDocument().
#endif
// FIXME: Should we reset m_domWindow when we detach from the Frame?
if (m_domWindow)
m_domWindow->resetUnlessSuspendedForPageCache();
m_scriptRunner = nullptr;
histogramMutationEventUsage(m_listenerTypes);
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();
m_renderArena = nullptr;
if (this == topDocument())
clearAXObjectCache();
m_decoder = nullptr;
if (m_styleSheetList)
m_styleSheetList->detachFromDocument();
if (m_elementSheet)
m_elementSheet->detachFromDocument();
m_styleSheetCollection.detachFromDocument();
clearStyleResolver(); // We need to destroy CSSFontSelector before destroying m_cachedResourceLoader.
// 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);
m_cachedResourceLoader.clear();
// We must call clearRareData() here since a Document class inherits TreeScope
// as well as Node. See a comment on TreeScope.h for the reason.
if (hasRareData())
clearRareData();
ASSERT(!m_listsInvalidatedAtDocument.size());
for (unsigned i = 0; i < WTF_ARRAY_LENGTH(m_nodeListCounts); i++)
ASSERT(!m_nodeListCounts[i]);
clearDocumentScope();
InspectorCounters::decrementCounter(InspectorCounters::DocumentCounter);
}
void Document::dropChildren()
{
ASSERT(!m_deletionHasBegun);
// 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_userActionElements.documentDidRemoveLastRef();
#if ENABLE(FULLSCREEN_API)
m_fullScreenElement = nullptr;
m_fullScreenElementStack.clear();
#endif
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.clear();
m_markers->detach();
m_cssCanvasElements.clear();
#if ENABLE(REQUEST_ANIMATION_FRAME)
clearScriptedAnimationController();
#endif
}
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);
ContainerNode* rootNode = scope->rootNode();
auto descendant = elementDescendants(*rootNode);
for (auto element = descendant.begin(), end = descendant.end(); element != end; ++element) {
const AtomicString& accessKey = element->fastGetAttribute(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::addImageElementByLowercasedUsemap(const AtomicStringImpl& name, HTMLImageElement& element)
{
return m_imagesByUsemap.add(name, element);
}
void Document::removeImageElementByLowercasedUsemap(const AtomicStringImpl& name, HTMLImageElement& element)
{
return m_imagesByUsemap.remove(name, element);
}
HTMLImageElement* Document::imageElementByLowercasedUsemap(const AtomicStringImpl& name) const
{
return m_imagesByUsemap.getElementByLowercasedUsemap(name, *this);
}
SelectorQueryCache& Document::selectorQueryCache()
{
if (!m_selectorQueryCache)
m_selectorQueryCache = adoptPtr(new SelectorQueryCache());
return *m_selectorQueryCache;
}
MediaQueryMatcher& Document::mediaQueryMatcher()
{
if (!m_mediaQueryMatcher)
m_mediaQueryMatcher = MediaQueryMatcher::create(this);
return *m_mediaQueryMatcher;
}
void Document::setCompatibilityMode(CompatibilityMode mode)
{
if (m_compatibilityModeLocked || mode == m_compatibilityMode)
return;
bool wasInQuirksMode = inQuirksMode();
m_compatibilityMode = mode;
if (m_selectorQueryCache)
m_selectorQueryCache->invalidate();
if (inQuirksMode() != wasInQuirksMode) {
// All user stylesheets have to reparse using the different mode.
m_styleSheetCollection.clearPageUserSheet();
m_styleSheetCollection.invalidateInjectedStyleSheetCache();
}
}
String Document::compatMode() const
{
return inQuirksMode() ? "BackCompat" : "CSS1Compat";
}
void Document::resetLinkColor()
{
m_linkColor = Color(0, 0, 238);
}
void Document::resetVisitedLinkColor()
{
m_visitedLinkColor = Color(85, 26, 139);
}
void Document::resetActiveLinkColor()
{
m_activeLinkColor.setNamedColor("red");
}
DOMImplementation* Document::implementation()
{
if (!m_implementation)
m_implementation = DOMImplementation::create(*this);
return m_implementation.get();
}
bool Document::hasManifest() const
{
return documentElement() && documentElement()->hasTagName(htmlTag) && documentElement()->hasAttribute(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);
// NOTE: Per DOM, dynamically inserting/removing doctype nodes doesn't affect compatibility mode.
#if ENABLE(LEGACY_VIEWPORT_ADAPTION)
// FIXME: It's a little strange to add these rules when a DocumentType with this prefix is added,
// but not remove these rules when a DocumentType with this prefix is removed. It seems this should
// be handled more the way the compatibility mode is, by fetching the doctype at the appropriate time,
// rather than by responding when a document type node is inserted.
if (DocumentType* documentType = doctype()) {
if (documentType->publicId().startsWith("-//wapforum//dtd xhtml mobile 1.", /* caseSensitive */ false))
processViewport("width=device-width, height=device-height", ViewportArguments::XHTMLMobileProfile);
}
#endif
Element* newDocumentElement = elementChildren(*this).first();
if (newDocumentElement == m_documentElement)
return;
m_documentElement = newDocumentElement;
// The root style used for media query matching depends on the document element.
clearStyleResolver();
}
PassRefPtr<Element> Document::createElement(const AtomicString& name, ExceptionCode& ec)
{
if (!isValidName(name)) {
ec = INVALID_CHARACTER_ERR;
return nullptr;
}
if (isXHTMLDocument())
return HTMLElementFactory::createElement(QualifiedName(nullAtom, name, xhtmlNamespaceURI), *this);
return createElement(QualifiedName(nullAtom, name, nullAtom), false);
}
PassRefPtr<DocumentFragment> Document::createDocumentFragment()
{
return DocumentFragment::create(document());
}
PassRefPtr<Text> Document::createTextNode(const String& data)
{
return Text::create(*this, data);
}
PassRefPtr<Comment> Document::createComment(const String& data)
{
return Comment::create(*this, data);
}
PassRefPtr<CDATASection> Document::createCDATASection(const String& data, ExceptionCode& ec)
{
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
return CDATASection::create(*this, data);
}
PassRefPtr<ProcessingInstruction> Document::createProcessingInstruction(const String& target, const String& data, ExceptionCode& ec)
{
if (!isValidName(target)) {
ec = INVALID_CHARACTER_ERR;
return nullptr;
}
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
return ProcessingInstruction::create(*this, target, data);
}
PassRefPtr<EntityReference> Document::createEntityReference(const String& name, ExceptionCode& ec)
{
if (!isValidName(name)) {
ec = INVALID_CHARACTER_ERR;
return nullptr;
}
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
return EntityReference::create(*this, name);
}
PassRefPtr<Text> Document::createEditingTextNode(const String& text)
{
return Text::createEditingText(*this, text);
}
PassRefPtr<CSSStyleDeclaration> Document::createCSSStyleDeclaration()
{
Ref<MutableStylePropertySet> propertySet(MutableStylePropertySet::create());
return propertySet->ensureCSSStyleDeclaration();
}
PassRefPtr<Node> Document::importNode(Node* importedNode, bool deep, ExceptionCode& ec)
{
ec = 0;
if (!importedNode) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
switch (importedNode->nodeType()) {
case TEXT_NODE:
return createTextNode(importedNode->nodeValue());
case CDATA_SECTION_NODE:
return createCDATASection(importedNode->nodeValue(), ec);
case ENTITY_REFERENCE_NODE:
return createEntityReference(importedNode->nodeName(), ec);
case PROCESSING_INSTRUCTION_NODE:
return createProcessingInstruction(importedNode->nodeName(), importedNode->nodeValue(), ec);
case COMMENT_NODE:
return createComment(importedNode->nodeValue());
case ELEMENT_NODE: {
Element& oldElement = toElement(*importedNode);
// FIXME: The following check might be unnecessary. Is it possible that
// oldElement has mismatched prefix/namespace?
if (!hasValidNamespaceForElements(oldElement.tagQName())) {
ec = NAMESPACE_ERR;
return nullptr;
}
RefPtr<Element> newElement = createElement(oldElement.tagQName(), false);
newElement->cloneDataFromElement(oldElement);
if (deep) {
for (Node* oldChild = oldElement.firstChild(); oldChild; oldChild = oldChild->nextSibling()) {
RefPtr<Node> newChild = importNode(oldChild, true, ec);
if (ec)
return nullptr;
newElement->appendChild(newChild.release(), ec);
if (ec)
return nullptr;
}
}
return newElement.release();
}
case ATTRIBUTE_NODE:
return Attr::create(*this, QualifiedName(nullAtom, toAttr(*importedNode).name(), nullAtom), toAttr(*importedNode).value());
case DOCUMENT_FRAGMENT_NODE: {
if (importedNode->isShadowRoot()) {
// ShadowRoot nodes should not be explicitly importable.
// Either they are imported along with their host node, or created implicitly.
break;
}
DocumentFragment& oldFragment = toDocumentFragment(*importedNode);
RefPtr<DocumentFragment> newFragment = createDocumentFragment();
if (deep) {
for (Node* oldChild = oldFragment.firstChild(); oldChild; oldChild = oldChild->nextSibling()) {
RefPtr<Node> newChild = importNode(oldChild, true, ec);
if (ec)
return nullptr;
newFragment->appendChild(newChild.release(), ec);
if (ec)
return nullptr;
}
}
return newFragment.release();
}
case ENTITY_NODE:
case NOTATION_NODE:
// FIXME: It should be possible to import these node types, however in DOM3 the DocumentType is readonly, so there isn't much sense in doing that.
// Ability to add these imported nodes to a DocumentType will be considered for addition to a future release of the DOM.
case DOCUMENT_NODE:
case DOCUMENT_TYPE_NODE:
case XPATH_NAMESPACE_NODE:
break;
}
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
PassRefPtr<Node> Document::adoptNode(PassRefPtr<Node> source, ExceptionCode& ec)
{
if (!source) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
if (source->isReadOnlyNode()) {
ec = NO_MODIFICATION_ALLOWED_ERR;
return nullptr;
}
EventQueueScope scope;
switch (source->nodeType()) {
case ENTITY_NODE:
case NOTATION_NODE:
case DOCUMENT_NODE:
case DOCUMENT_TYPE_NODE:
case XPATH_NAMESPACE_NODE:
ec = NOT_SUPPORTED_ERR;
return nullptr;
case ATTRIBUTE_NODE: {
Attr& attr = toAttr(*source);
if (attr.ownerElement())
attr.ownerElement()->removeAttributeNode(&attr, ec);
attr.setSpecified(true);
break;
}
default:
if (source->isShadowRoot()) {
// ShadowRoot cannot disconnect itself from the host node.
ec = HIERARCHY_REQUEST_ERR;
return nullptr;
}
if (source->isFrameOwnerElement()) {
HTMLFrameOwnerElement& frameOwnerElement = toHTMLFrameOwnerElement(*source);
if (frame() && frame()->tree().isDescendantOf(frameOwnerElement.contentFrame())) {
ec = HIERARCHY_REQUEST_ERR;
return nullptr;
}
}
if (source->parentNode()) {
source->parentNode()->removeChild(source.get(), ec);
if (ec)
return nullptr;
}
}
adoptIfNeeded(source.get());
return 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")
if ((qName.prefix() == xmlnsAtom && qName.namespaceURI() != XMLNSNames::xmlnsNamespaceURI) || (qName.prefix() != xmlnsAtom && qName.namespaceURI() == XMLNSNames::xmlnsNamespaceURI))
return false;
return true;
}
bool Document::hasValidNamespaceForAttributes(const QualifiedName& qName)
{
// Spec: DOM Level 2 Core: http://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-ElSetAttrNS
if (qName.prefix().isEmpty() && qName.localName() == xmlnsAtom) {
// Note: The case of an "xmlns" qualified name with a namespace of
// xmlnsNamespaceURI is specifically allowed (See <http://www.w3.org/2000/xmlns/>).
return qName.namespaceURI() == XMLNSNames::xmlnsNamespaceURI;
}
return hasValidNamespaceForElements(qName);
}
// FIXME: This should really be in a possible ElementFactory class.
PassRefPtr<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::createElement(name, *this, nullptr, createdByParser);
#if ENABLE(SVG)
else if (name.namespaceURI() == SVGNames::svgNamespaceURI)
element = SVGElementFactory::createElement(name, *this, createdByParser);
#endif
#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.release();
}
bool Document::regionBasedColumnsEnabled() const
{
return settings() && settings()->regionBasedColumnsEnabled();
}
bool Document::cssStickyPositionEnabled() const
{
return settings() && settings()->cssStickyPositionEnabled();
}
bool Document::cssRegionsEnabled() const
{
return RuntimeEnabledFeatures::sharedFeatures().cssRegionsEnabled();
}
bool Document::cssCompositingEnabled() const
{
return RuntimeEnabledFeatures::sharedFeatures().cssCompositingEnabled();
}
bool Document::cssGridLayoutEnabled() const
{
return settings() && settings()->cssGridLayoutEnabled();
}
#if ENABLE(CSS_REGIONS)
PassRefPtr<DOMNamedFlowCollection> Document::webkitGetNamedFlows()
{
if (!cssRegionsEnabled() || !renderView())
return nullptr;
updateStyleIfNeeded();
return namedFlows()->createCSSOMSnapshot();
}
#endif
NamedFlowCollection* Document::namedFlows()
{
if (!m_namedFlows)
m_namedFlows = NamedFlowCollection::create(this);
return m_namedFlows.get();
}
PassRefPtr<Element> Document::createElementNS(const String& namespaceURI, const String& qualifiedName, ExceptionCode& ec)
{
String prefix, localName;
if (!parseQualifiedName(qualifiedName, prefix, localName, ec))
return nullptr;
QualifiedName qName(prefix, localName, namespaceURI);
if (!hasValidNamespaceForElements(qName)) {
ec = NAMESPACE_ERR;
return nullptr;
}
return createElement(qName, false);
}
String Document::readyState() const
{
DEFINE_STATIC_LOCAL(const String, loading, (ASCIILiteral("loading")));
DEFINE_STATIC_LOCAL(const String, interactive, (ASCIILiteral("interactive")));
DEFINE_STATIC_LOCAL(const String, complete, (ASCIILiteral("complete")));
switch (m_readyState) {
case Loading:
return loading;
case Interactive:
return interactive;
case Complete:
return complete;
}
ASSERT_NOT_REACHED();
return String();
}
void Document::setReadyState(ReadyState readyState)
{
if (readyState == m_readyState)
return;
#if ENABLE(WEB_TIMING)
switch (readyState) {
case Loading:
if (!m_documentTiming.domLoading)
m_documentTiming.domLoading = monotonicallyIncreasingTime();
break;
case Interactive:
if (!m_documentTiming.domInteractive)
m_documentTiming.domInteractive = monotonicallyIncreasingTime();
break;
case Complete:
if (!m_documentTiming.domComplete)
m_documentTiming.domComplete = monotonicallyIncreasingTime();
break;
}
#endif
m_readyState = readyState;
dispatchEvent(Event::create(eventNames().readystatechangeEvent, false, false));
if (settings() && settings()->suppressesIncrementalRendering())
setVisualUpdatesAllowed(readyState);
}
void Document::setVisualUpdatesAllowed(ReadyState readyState)
{
ASSERT(settings() && 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()->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(settings()->incrementalRenderingSuppressionTimeoutInSeconds());
if (!visualUpdatesAllowed)
return;
FrameView* frameView = view();
bool needsLayout = frameView && renderView() && (frameView->layoutPending() || renderView()->needsLayout());
if (needsLayout)
updateLayout();
if (Page* page = this->page()) {
if (frame()->isMainFrame()) {
frameView->addPaintPendingMilestones(DidFirstPaintAfterSuppressedIncrementalRendering);
if (page->requestedLayoutMilestones() & DidFirstLayoutAfterSuppressedIncrementalRendering)
frame()->loader().didLayout(DidFirstLayoutAfterSuppressedIncrementalRendering);
}
}
#if USE(ACCELERATED_COMPOSITING)
if (view())
view()->updateCompositingLayersAfterLayout();
#endif
if (RenderView* renderView = this->renderView())
renderView->repaintViewAndCompositedLayers();
if (Frame* frame = this->frame())
frame->loader().forcePageTransitionIfNeeded();
}
void Document::visualUpdatesSuppressionTimerFired(Timer<Document>*)
{
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()->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::encoding() const
{
if (TextResourceDecoder* d = decoder())
return d->encoding().domName();
return String();
}
String Document::defaultCharset() const
{
if (Settings* settings = this->settings())
return settings->defaultTextEncodingName();
return String();
}
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.
styleResolverChanged(DeferRecalcStyle);
}
void Document::setXMLVersion(const String& version, ExceptionCode& ec)
{
if (!implementation()->hasFeature("XML", String())) {
ec = NOT_SUPPORTED_ERR;
return;
}
if (!XMLDocumentParser::supportsXMLVersion(version)) {
ec = NOT_SUPPORTED_ERR;
return;
}
m_xmlVersion = version;
}
void Document::setXMLStandalone(bool standalone, ExceptionCode& ec)
{
if (!implementation()->hasFeature("XML", String())) {
ec = NOT_SUPPORTED_ERR;
return;
}
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();
}
URL Document::baseURI() const
{
return m_baseURL;
}
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->pinToMainThread();
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();
}
Element* Document::elementFromPoint(int x, int y) const
{
if (!hasLivingRenderTree())
return nullptr;
return TreeScope::elementFromPoint(x, y);
}
PassRefPtr<Range> Document::caretRangeFromPoint(int x, int y)
{
if (!hasLivingRenderTree())
return nullptr;
LayoutPoint localPoint;
Node* node = nodeFromPoint(this, x, y, &localPoint);
if (!node)
return nullptr;
Node* shadowAncestorNode = ancestorInThisScope(node);
if (shadowAncestorNode != node) {
unsigned offset = shadowAncestorNode->nodeIndex();
ContainerNode* container = shadowAncestorNode->parentNode();
return Range::create(*this, container, offset, container, offset);
}
RenderObject* renderer = node->renderer();
if (!renderer)
return nullptr;
VisiblePosition visiblePosition = renderer->positionForPoint(localPoint);
if (visiblePosition.isNull())
return nullptr;
Position rangeCompliantPosition = visiblePosition.deepEquivalent().parentAnchoredEquivalent();
return Range::create(*this, rangeCompliantPosition, rangeCompliantPosition);
}
/*
* Performs three operations:
* 1. Convert control characters to spaces
* 2. Trim leading and trailing spaces
* 3. Collapse internal whitespace.
*/
template <typename CharacterType>
static inline StringWithDirection canonicalizedTitle(Document* document, const StringWithDirection& titleWithDirection)
{
const String& title = titleWithDirection.string();
const CharacterType* characters = title.getCharacters<CharacterType>();
unsigned length = title.length();
unsigned i;
StringBuffer<CharacterType> buffer(length);
unsigned builderIndex = 0;
// Skip leading spaces and leading characters that would convert to spaces
for (i = 0; i < length; ++i) {
CharacterType c = characters[i];
if (!(c <= 0x20 || c == 0x7F))
break;
}
if (i == length)
return StringWithDirection();
// Replace control characters with spaces, and backslashes with currency symbols, and collapse whitespace.
bool previousCharWasWS = false;
for (; i < length; ++i) {
CharacterType c = characters[i];
if (c <= 0x20 || c == 0x7F || (U_GET_GC_MASK(c) & (U_GC_ZL_MASK | U_GC_ZP_MASK))) {
if (previousCharWasWS)
continue;
buffer[builderIndex++] = ' ';
previousCharWasWS = true;
} else {
buffer[builderIndex++] = c;
previousCharWasWS = false;
}
}
// Strip trailing spaces
while (builderIndex > 0) {
--builderIndex;
if (buffer[builderIndex] != ' ')
break;
}
if (!builderIndex && buffer[builderIndex] == ' ')
return StringWithDirection();
buffer.shrink(builderIndex + 1);
// Replace the backslashes with currency symbols if the encoding requires it.
document->displayBufferModifiedByEncoding(buffer.characters(), buffer.length());
return StringWithDirection(String::adopt(buffer), titleWithDirection.direction());
}
void Document::updateTitle(const StringWithDirection& title)
{
if (m_rawTitle == title)
return;
m_rawTitle = title;
if (m_rawTitle.string().isEmpty())
m_title = StringWithDirection();
else {
if (m_rawTitle.string().is8Bit())
m_title = canonicalizedTitle<LChar>(this, m_rawTitle);
else
m_title = canonicalizedTitle<UChar>(this, m_rawTitle);
}
if (DocumentLoader* loader = this->loader())
loader->setTitle(m_title);
}
void Document::setTitle(const String& title)
{
// Title set by JavaScript -- overrides any title elements.
m_titleSetExplicitly = true;
if (!isHTMLDocument() && !isXHTMLDocument())
m_titleElement = nullptr;
else if (!m_titleElement) {
if (HTMLElement* headElement = head()) {
m_titleElement = createElement(titleTag, false);
headElement->appendChild(m_titleElement, ASSERT_NO_EXCEPTION);
}
}
// The DOM API has no method of specifying direction, so assume LTR.
updateTitle(StringWithDirection(title, LTR));
if (m_titleElement) {
ASSERT(isHTMLTitleElement(m_titleElement.get()));
if (isHTMLTitleElement(m_titleElement.get()))
toHTMLTitleElement(m_titleElement.get())->setText(title);
}
}
void Document::setTitleElement(const StringWithDirection& title, Element* titleElement)
{
if (titleElement != m_titleElement) {
if (m_titleElement || m_titleSetExplicitly) {
// Only allow the first title element to change the title -- others have no effect.
return;
}
m_titleElement = titleElement;
}
updateTitle(title);
}
void Document::removeTitle(Element* titleElement)
{
if (m_titleElement != titleElement)
return;
m_titleElement = nullptr;
m_titleSetExplicitly = false;
// Update title based on first title element in the head, if one exists.
if (HTMLElement* headElement = head()) {
if (auto firstTitle = childrenOfType<HTMLTitleElement>(*headElement).first())
setTitleElement(firstTitle->textWithDirection(), firstTitle);
}
if (!m_titleElement)
updateTitle(StringWithDirection());
}
#if ENABLE(PAGE_VISIBILITY_API)
void Document::registerForVisibilityStateChangedCallbacks(Element* element)
{
m_visibilityStateCallbackElements.add(element);
}
void Document::unregisterForVisibilityStateChangedCallbacks(Element* element)
{
m_visibilityStateCallbackElements.remove(element);
}
void Document::visibilityStateChanged()
{
dispatchEvent(Event::create(eventNames().visibilitychangeEvent, false, false));
for (auto it = m_visibilityStateCallbackElements.begin(); it != m_visibilityStateCallbackElements.end(); ++it)
(*it)->visibilityStateChanged();
}
PageVisibilityState Document::pageVisibilityState() 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 PageVisibilityStateHidden;
return m_frame->page()->visibilityState();
}
String Document::visibilityState() const
{
return pageVisibilityStateString(pageVisibilityState());
}
bool Document::hidden() const
{
return pageVisibilityState() != PageVisibilityStateVisible;
}
#endif
#if ENABLE(CSP_NEXT)
DOMSecurityPolicy* Document::securityPolicy()
{
if (!m_domSecurityPolicy)
m_domSecurityPolicy = DOMSecurityPolicy::create(this);
return m_domSecurityPolicy.get();
}
#endif
String Document::nodeName() const
{
return "#document";
}
Node::NodeType Document::nodeType() const
{
return DOCUMENT_NODE;
}
FormController& Document::formController()
{
if (!m_formController)
m_formController = FormController::create();
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;
}
Settings* Document::settings() const
{
return m_frame ? &m_frame->settings() : nullptr;
}
PassRefPtr<Range> Document::createRange()
{
return Range::create(*this);
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow,
PassRefPtr<NodeFilter> filter, bool expandEntityReferences, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
return NodeIterator::create(root, whatToShow, filter, expandEntityReferences);
}
PassRefPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow,
PassRefPtr<NodeFilter> filter, bool expandEntityReferences, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
return TreeWalker::create(root, whatToShow, filter, expandEntityReferences);
}
void Document::scheduleForcedStyleRecalc()
{
m_pendingStyleRecalcShouldForce = true;
scheduleStyleRecalc();
}
void Document::scheduleStyleRecalc()
{
if (shouldDisplaySeamlesslyWithParent()) {
// When we're seamless, our parent document manages our style recalcs.
ownerElement()->setNeedsStyleRecalc();
ownerElement()->document().scheduleStyleRecalc();
return;
}
if (m_styleRecalcTimer.isActive() || inPageCache())
return;
ASSERT(childNeedsStyleRecalc() || m_pendingStyleRecalcShouldForce);
// FIXME: Why on earth is this here? This is clearly misplaced.
invalidateAccessKeyMap();
m_styleRecalcTimer.startOneShot(0);
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::styleRecalcTimerFired(Timer<Document>*)
{
updateStyleIfNeeded();
}
void Document::recalcStyle(Style::Change change)
{
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();
if (frameView.isPainting())
return;
if (m_inStyleRecalc)
return; // Guard against re-entrancy. -dwh
// 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.
m_styleSheetCollection.flushPendingUpdates();
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willRecalculateStyle(this);
if (m_elementSheet && m_elementSheet->contents()->usesRemUnits())
m_styleSheetCollection.setUsesRemUnit(true);
m_inStyleRecalc = true;
{
PostAttachCallbackDisabler disabler(*this);
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
frameView.pauseScheduledEvents();
frameView.beginDeferredRepaints();
if (m_pendingStyleRecalcShouldForce)
change = Style::Force;
if (change == Style::Force) {
// This may get set again during style resolve.
m_hasNodesWithPlaceholderStyle = false;
}
Style::resolveTree(*this, change);
#if USE(ACCELERATED_COMPOSITING)
frameView.updateCompositingLayersAfterStyleChange();
#endif
clearNeedsStyleRecalc();
clearChildNeedsStyleRecalc();
unscheduleStyleRecalc();
m_inStyleRecalc = false;
// Pseudo element removal and similar may only work with these flags still set. Reset them after the style recalc.
if (m_styleResolver)
m_styleSheetCollection.resetCSSFeatureFlags();
frameView.resumeScheduledEvents();
frameView.endDeferredRepaints();
}
// 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);
// 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().eventHandler().dispatchFakeMouseMoveEventSoon();
// Style change may reset the focus, e.g. display: none, visibility: hidden.
resetHiddenFocusElementSoon();
}
void Document::updateStyleIfNeeded()
{
ASSERT(isMainThread());
ASSERT(!view() || (!view()->isInLayout() && !view()->isPainting()));
if (m_optimizedStyleSheetUpdateTimer.isActive())
styleResolverChanged(RecalcStyleIfNeeded);
if ((!m_pendingStyleRecalcShouldForce && !childNeedsStyleRecalc()) || inPageCache())
return;
AnimationUpdateBlock animationUpdateBlock(m_frame ? &m_frame->animation() : nullptr);
recalcStyle(Style::NoChange);
}
void Document::updateLayout()
{
ASSERT(isMainThread());
FrameView* frameView = view();
if (frameView && frameView->isInLayout()) {
// View layout should not be re-entrant.
ASSERT_NOT_REACHED();
return;
}
if (Element* oe = ownerElement())
oe->document().updateLayout();
updateStyleIfNeeded();
StackStats::LayoutCheckPoint layoutCheckPoint;
// Only do a layout if changes have occurred that make it necessary.
if (frameView && renderView() && (frameView->layoutPending() || renderView()->needsLayout()))
frameView->layout();
// Active focus element's isFocusable() state may change after Layout. e.g. width: 0px or height: 0px.
resetHiddenFocusElementSoon();
}
// FIXME: This is a bad idea and needs to be removed eventually.
// Other browsers load stylesheets before they continue parsing the web page.
// Since we don't, we can run JavaScript code that needs answers before the
// stylesheets are loaded. Doing a layout ignoring the pending stylesheets
// lets us get reasonable answers. The long term solution to this problem is
// to instead suspend JavaScript execution.
void Document::updateLayoutIgnorePendingStylesheets()
{
bool oldIgnore = m_ignorePendingStylesheets;
if (!haveStylesheetsLoaded()) {
m_ignorePendingStylesheets = true;
// FIXME: We are willing to attempt to suppress painting with outdated style info only once. Our assumption is that it would be
// dangerous to try to stop it a second time, after page content has already been loaded and displayed
// with accurate style information. (Our suppression involves blanking the whole page at the
// moment. If it were more refined, we might be able to do something better.)
// It's worth noting though that this entire method is a hack, since what we really want to do is
// suspend JS instead of doing a layout with inaccurate information.
HTMLElement* bodyElement = body();
if (bodyElement && !bodyElement->renderer() && m_pendingSheetLayout == NoLayoutWithPendingSheets) {
m_pendingSheetLayout = DidLayoutWithPendingSheets;
styleResolverChanged(RecalcStyleImmediately);
} else if (m_hasNodesWithPlaceholderStyle)
// If new nodes have been added or style recalc has been done with style sheets still pending, some nodes
// may not have had their real style calculated yet. Normally this gets cleaned when style sheets arrive
// but here we need up-to-date style immediately.
recalcStyle(Style::Force);
}
updateLayout();
m_ignorePendingStylesheets = oldIgnore;
}
PassRef<RenderStyle> Document::styleForElementIgnoringPendingStylesheets(Element* element)
{
ASSERT_ARG(element, &element->document() == this);
TemporaryChange<bool> change(m_ignorePendingStylesheets, true);
return ensureStyleResolver().styleForElement(element, element->parentNode() ? element->parentNode()->computedStyle() : nullptr);
}
bool Document::isPageBoxVisible(int pageIndex)
{
Ref<RenderStyle> pageStyle(ensureStyleResolver().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)
{
RefPtr<RenderStyle> style = ensureStyleResolver().styleForPage(pageIndex);
RenderView* view = renderView();
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: {
LengthSize size = style->pageSize();
ASSERT(size.width().isFixed());
ASSERT(size.height().isFixed());
width = valueForLength(size.width(), 0, view);
height = valueForLength(size.height(), 0, view);
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, view);
marginRight = style->marginRight().isAuto() ? marginRight : intValueForLength(style->marginRight(), width, view);
marginBottom = style->marginBottom().isAuto() ? marginBottom : intValueForLength(style->marginBottom(), width, view);
marginLeft = style->marginLeft().isAuto() ? marginLeft : intValueForLength(style->marginLeft(), width, view);
}
void Document::setIsViewSource(bool isViewSource)
{
m_isViewSource = isViewSource;
if (!m_isViewSource)
return;
setSecurityOrigin(SecurityOrigin::createUnique());
}
void Document::createStyleResolver()
{
bool matchAuthorAndUserStyles = true;
if (Settings* settings = this->settings())
matchAuthorAndUserStyles = settings->authorAndUserStylesEnabled();
m_styleResolver = adoptPtr(new StyleResolver(*this, matchAuthorAndUserStyles));
m_styleSheetCollection.combineCSSFeatureFlags();
}
void Document::clearStyleResolver()
{
m_styleResolver.clear();
}
void Document::setRenderView(RenderView* renderView)
{
m_renderView = renderView;
Node::setRenderer(renderView);
}
void Document::createRenderTree()
{
ASSERT(!attached());
ASSERT(!m_inPageCache);
ASSERT(!m_axObjectCache || this != topDocument());
ASSERT(!m_renderArena);
m_renderArena = std::make_unique<RenderArena>();
// FIXME: It would be better if we could pass the resolved document style directly here.
setRenderView(new RenderView(*this, RenderStyle::create()));
#if USE(ACCELERATED_COMPOSITING)
renderView()->setIsInWindow(true);
#endif
recalcStyle(Style::Force);
if (m_documentElement)
Style::attachRenderTree(*m_documentElement);
setAttached(true);
}
static void pageWheelEventHandlerCountChanged(Page& page)
{
unsigned count = 0;
for (const Frame* frame = &page.mainFrame(); frame; frame = frame->tree().traverseNext()) {
if (Document* document = frame->document())
count += document->wheelEventHandlerCount();
}
page.chrome().client().numWheelEventHandlersChanged(count);
}
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 (!attached())
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())
pageWheelEventHandlerCountChanged(*page());
#if ENABLE(TOUCH_EVENTS)
// FIXME: Doing this only for the main frame is insufficient.
// A subframe could have touch event handlers.
if (hasTouchEventHandlers() && page() && m_frame->isMainFrame())
page()->chrome().client().needTouchEvents(true);
#endif
if (m_frame->activeDOMObjectsAndAnimationsSuspended()) {
suspendScriptedAnimationControllerCallbacks();
m_frame->animation().suspendAnimationsForDocument(this);
suspendActiveDOMObjects(ActiveDOMObject::PageWillBeSuspended);
}
}
void Document::disconnectFromFrame()
{
m_frame = nullptr;
}
void Document::destroyRenderTree()
{
ASSERT(attached());
ASSERT(!m_inPageCache);
TemporaryChange<bool> change(m_renderTreeBeingDestroyed, true);
if (this == topDocument())
clearAXObjectCache();
documentWillBecomeInactive();
if (FrameView* frameView = view())
frameView->detachCustomScrollbars();
#if ENABLE(FULLSCREEN_API)
if (m_fullScreenRenderer)
setFullScreenRenderer(nullptr);
#endif
m_hoveredElement = nullptr;
m_focusedElement = nullptr;
m_activeElement = nullptr;
if (m_documentElement)
Style::detachRenderTree(*m_documentElement);
clearChildNeedsStyleRecalc();
setAttached(false);
unscheduleStyleRecalc();
if (renderView())
renderView()->destroy();
setRenderView(nullptr);
#if ENABLE(IOS_TEXT_AUTOSIZING)
// Do this before the arena is cleared, which is needed to deref the RenderStyle on TextAutoSizingKey.
m_textAutoSizedNodes.clear();
#endif
m_renderArena = nullptr;
}
void Document::prepareForDestruction()
{
disconnectDescendantFrames();
if (m_domWindow && m_frame)
m_domWindow->willDetachDocumentFromFrame();
destroyRenderTree();
if (isPluginDocument())
toPluginDocument(this)->detachFromPluginElement();
#if ENABLE(POINTER_LOCK)
if (page())
page()->pointerLockController()->documentDetached(this);
#endif
stopActiveDOMObjects();
m_eventQueue.close();
#if ENABLE(FULLSCREEN_API)
m_fullScreenChangeEventTargetQueue.clear();
m_fullScreenErrorEventTargetQueue.clear();
#endif
#if ENABLE(REQUEST_ANIMATION_FRAME)
clearScriptedAnimationController();
#endif
#if ENABLE(SHARED_WORKERS)
SharedWorkerRepository::documentDetached(this);
#endif
#if ENABLE(TOUCH_EVENTS)
if (m_touchEventTargets && m_touchEventTargets->size() && parentDocument())
parentDocument()->didRemoveEventTargetNode(this);
#endif
if (m_mediaQueryMatcher)
m_mediaQueryMatcher->documentDestroyed();
disconnectFromFrame();
}
void Document::removeAllEventListeners()
{
EventTarget::removeAllEventListeners();
if (m_domWindow)
m_domWindow->removeAllEventListeners();
for (Node* node = firstChild(); node; node = NodeTraversal::next(node))
node->removeAllEventListeners();
}
void Document::suspendActiveDOMObjects(ActiveDOMObject::ReasonForSuspension why)
{
ScriptExecutionContext::suspendActiveDOMObjects(why);
}
void Document::resumeActiveDOMObjects(ActiveDOMObject::ReasonForSuspension why)
{
ScriptExecutionContext::resumeActiveDOMObjects(why);
}
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.clear();
}
AXObjectCache* Document::existingAXObjectCache() const
{
if (!AXObjectCache::accessibilityEnabled())
return nullptr;
if (!topDocument()->hasLivingRenderTree())
return nullptr;
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 = adoptPtr(new AXObjectCache(*topDocument));
return topDocument->m_axObjectCache.get();
}
void Document::setVisuallyOrdered()
{
m_visuallyOrdered = true;
if (renderView())
renderView()->style().setRTLOrdering(VisualOrder);
}
PassRefPtr<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;
}
void Document::open(Document* ownerDocument)
{
if (ownerDocument) {
setURL(ownerDocument->url());
m_cookieURL = ownerDocument->cookieURL();
setSecurityOrigin(ownerDocument->securityOrigin());
}
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().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.clear();
}
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()
{
cancelParsing();
removeChildren();
setCompatibilityMode(NoQuirksMode);
// Documents rendered seamlessly should start out requiring a stylesheet
// collection update in order to ensure they inherit all the relevant data
// from their parent.
if (shouldDisplaySeamlesslyWithParent())
styleResolverChanged(DeferRecalcStyle);
m_parser = createParser();
setParsing(true);
setReadyState(Loading);
}
HTMLElement* Document::body() const
{
// If the document element contains both a frameset and a body, the frameset wins.
auto element = documentElement();
if (!element)
return nullptr;
if (auto frameset = childrenOfType<HTMLFrameSetElement>(*element).first())
return frameset;
return childrenOfType<HTMLBodyElement>(*element).first();
}
void Document::setBody(PassRefPtr<HTMLElement> prpNewBody, ExceptionCode& ec)
{
RefPtr<HTMLElement> newBody = prpNewBody;
if (!newBody || !documentElement() || !newBody->hasTagName(bodyTag)) {
ec = HIERARCHY_REQUEST_ERR;
return;
}
if (&newBody->document() != this) {
ec = 0;
RefPtr<Node> node = importNode(newBody.get(), true, ec);
if (ec)
return;
newBody = toHTMLElement(node.get());
}
HTMLElement* b = body();
if (!b)
documentElement()->appendChild(newBody.release(), ec);
else
documentElement()->replaceChild(newBody.release(), b, ec);
}
HTMLHeadElement* Document::head()
{
if (auto element = documentElement())
return childrenOfType<HTMLHeadElement>(*element).first();
return nullptr;
}
void Document::close()
{
// FIXME: We should follow the specification more closely:
// http://www.whatwg.org/specs/web-apps/current-work/#dom-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;
}
m_frame->loader().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> protect(*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)
Frame* f = frame();
if (f) {
f->loader().icon().startLoader();
f->animation().startAnimationsIfNotSuspended(this);
}
ImageLoader::dispatchPendingBeforeLoadEvents();
ImageLoader::dispatchPendingLoadEvents();
ImageLoader::dispatchPendingErrorEvents();
HTMLLinkElement::dispatchPendingLoadEvents();
HTMLStyleElement::dispatchPendingLoadEvents();
#if ENABLE(SVG)
// 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();
#endif
dispatchWindowLoadEvent();
enqueuePageshowEvent(PageshowEventNotPersisted);
enqueuePopstateEvent(m_pendingStateObject ? m_pendingStateObject.release() : SerializedScriptValue::nullValue());
if (f)
f->loader().handledOnloadEvents();
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("onload fired at %d\n", elapsedTime());
#endif
// 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() && elapsedTime() < cLayoutScheduleThreshold) {
// 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()->unscheduleRelayout();
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()->layout();
}
m_processingLoadEvent = false;
#if PLATFORM(MAC) || PLATFORM(WIN) || PLATFORM(GTK) || PLATFORM(EFL)
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.
axObjectCache()->getOrCreate(renderView());
if (this == topDocument())
axObjectCache()->postNotification(renderView(), AXObjectCache::AXLoadComplete);
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 ENABLE(SVG)
if (svgExtensions())
accessSVGExtensions()->startAnimations();
#endif
}
void Document::setParsing(bool b)
{
m_bParsing = b;
if (m_bParsing && !m_sharedObjectPool)
m_sharedObjectPool = DocumentSharedObjectPool::create();
if (!m_bParsing && view())
view()->scheduleRelayout();
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement() && !m_bParsing)
printf("Parsing finished at %d\n", elapsedTime());
#endif
}
bool Document::shouldScheduleLayout()
{
// This function will only be called when FrameView thinks a layout is needed.
// This enforces a couple extra rules.
//
// (a) Only schedule a layout once the stylesheets are loaded.
// (b) Only schedule layout once we have a body element.
return (haveStylesheetsLoaded() && body())
|| (documentElement() && !documentElement()->hasTagName(htmlTag));
}
bool Document::isLayoutTimerActive()
{
return view() && view()->layoutPending() && !minimumLayoutDelay();
}
int Document::minimumLayoutDelay()
{
if (m_overMinimumLayoutThreshold)
return 0;
int elapsed = elapsedTime();
m_overMinimumLayoutThreshold = elapsed > cLayoutScheduleThreshold;
// We'll want to schedule the timer to fire at the minimum layout threshold.
return std::max(0, cLayoutScheduleThreshold - elapsed);
}
int Document::elapsedTime() const
{
return static_cast<int>(monotonicallyIncreasingTimeMS() - m_startTime);
}
void Document::write(const SegmentedString& text, Document* ownerDocument)
{
NestingLevelIncrementer nestingLevelIncrementer(m_writeRecursionDepth);
m_writeRecursionIsTooDeep = (m_writeRecursionDepth > 1) && m_writeRecursionIsTooDeep;
m_writeRecursionIsTooDeep = (m_writeRecursionDepth > cMaxWriteRecursionDepth) || m_writeRecursionIsTooDeep;
if (m_writeRecursionIsTooDeep)
return;
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Beginning a document.write at %d\n", elapsedTime());
#endif
bool hasInsertionPoint = m_parser && m_parser->hasInsertionPoint();
if (!hasInsertionPoint && m_ignoreDestructiveWriteCount)
return;
if (!hasInsertionPoint)
open(ownerDocument);
ASSERT(m_parser);
m_parser->insert(text);
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Ending a document.write at %d\n", elapsedTime());
#endif
}
void Document::write(const String& text, Document* ownerDocument)
{
write(SegmentedString(text), ownerDocument);
}
void Document::writeln(const String& text, Document* ownerDocument)
{
write(text, ownerDocument);
write("\n", ownerDocument);
}
double Document::minimumTimerInterval() const
{
Page* p = page();
if (!p)
return ScriptExecutionContext::minimumTimerInterval();
return p->settings().minDOMTimerInterval();
}
double Document::timerAlignmentInterval() const
{
Page* p = page();
if (!p)
return ScriptExecutionContext::timerAlignmentInterval();
return p->settings().domTimerAlignmentInterval();
}
EventTarget* Document::errorEventTarget()
{
return m_domWindow.get();
}
void Document::logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, PassRefPtr<ScriptCallStack> callStack)
{
addMessage(JSMessageSource, ErrorMessageLevel, errorMessage, sourceURL, lineNumber, columnNumber, 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());
}
if (m_selectorQueryCache)
m_selectorQueryCache->invalidate();
if (!m_baseURL.isValid())
m_baseURL = URL();
if (m_elementSheet) {
// Element sheet is silly. It never contains anything.
ASSERT(!m_elementSheet->contents()->ruleCount());
bool usesRemUnits = m_elementSheet->contents()->usesRemUnits();
m_elementSheet = CSSStyleSheet::createInline(*this, m_baseURL);
// FIXME: So we are not really the parser. The right fix is to eliminate the element sheet completely.
m_elementSheet->contents()->parserSetUsesRemUnits(usesRemUnits);
}
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.
auto anchorDescendants = descendantsOfType<HTMLAnchorElement>(*this);
for (auto anchor = anchorDescendants.begin(), end = anchorDescendants.end(); anchor != end; ++anchor)
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.begin(), end = baseDescendants.end(); base != end && (!href || !target); ++base) {
if (!href) {
const AtomicString& value = base->fastGetAttribute(hrefAttr);
if (!value.isNull())
href = &value;
}
if (!target) {
const AtomicString& value = base->fastGetAttribute(targetAttr);
if (!value.isNull())
target = &value;
}
}
// 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);
}
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;
// Frame-busting is generally allowed, but blocked for sandboxed frames lacking the 'allow-top-navigation' flag.
if (!isSandboxed(SandboxTopNavigation) && targetFrame == &m_frame->tree().top())
return true;
if (isSandboxed(SandboxNavigation)) {
if (targetFrame->tree().isDescendantOf(m_frame))
return true;
const char* reason = "The frame attempting navigation is sandboxed, and is therefore disallowed from navigating its ancestors.";
if (isSandboxed(SandboxTopNavigation) && targetFrame == &m_frame->tree().top())
reason = "The frame attempting navigation of the top-level window is sandboxed, but the 'allow-top-navigation' flag is not set.";
printNavigationErrorMessage(targetFrame, url(), reason);
return false;
}
// This is the normal case. A document can navigate its decendant 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::seamlessParentUpdatedStylesheets()
{
styleResolverChanged(RecalcStyleImmediately);
}
void Document::didRemoveAllPendingStylesheet()
{
m_needsNotifyRemoveAllPendingStylesheet = false;
styleResolverChanged(RecalcStyleIfNeeded);
if (ScriptableDocumentParser* parser = scriptableDocumentParser())
parser->executeScriptsWaitingForStylesheets();
if (m_gotoAnchorNeededAfterStylesheetsLoad && view())
view()->scrollToFragment(m_url);
}
CSSStyleSheet& Document::elementSheet()
{
if (!m_elementSheet)
m_elementSheet = CSSStyleSheet::createInline(*this, m_baseURL);
return *m_elementSheet;
}
void Document::processHttpEquiv(const String& equiv, const String& content)
{
ASSERT(!equiv.isNull() && !content.isNull());
Frame* frame = this->frame();
if (equalIgnoringCase(equiv, "default-style")) {
// 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
m_styleSheetCollection.setSelectedStylesheetSetName(content);
m_styleSheetCollection.setPreferredStylesheetSetName(content);
styleResolverChanged(DeferRecalcStyle);
} else if (equalIgnoringCase(equiv, "refresh")) {
double delay;
String url;
if (frame && parseHTTPRefresh(content, true, delay, url)) {
if (url.isEmpty())
url = m_url.string();
else
url = completeURL(url).string();
frame->navigationScheduler().scheduleRedirect(delay, url);
}
} else if (equalIgnoringCase(equiv, "set-cookie")) {
// FIXME: make setCookie work on XML documents too; e.g. in case of <html:meta .....>
if (isHTMLDocument()) {
// Exception (for sandboxed documents) ignored.
toHTMLDocument(this)->setCookie(content, IGNORE_EXCEPTION);
}
} else if (equalIgnoringCase(equiv, "content-language"))
setContentLanguage(content);
else if (equalIgnoringCase(equiv, "x-dns-prefetch-control"))
parseDNSPrefetchControlHeader(content);
else if (equalIgnoringCase(equiv, "x-frame-options")) {
if (frame) {
FrameLoader& frameLoader = frame->loader();
unsigned long requestIdentifier = 0;
if (frameLoader.activeDocumentLoader() && frameLoader.activeDocumentLoader()->mainResourceLoader())
requestIdentifier = frameLoader.activeDocumentLoader()->mainResourceLoader()->identifier();
if (frameLoader.shouldInterruptLoadForXFrameOptions(content, url(), requestIdentifier)) {
String message = "Refused to display '" + url().stringCenterEllipsizedToLength() + "' in a frame because it set 'X-Frame-Options' to '" + content + "'.";
frameLoader.stopAllLoaders();
// Stopping the loader isn't enough, as we're already parsing the document; to honor the header's
// intent, we must navigate away from the possibly partially-rendered document to a location that
// doesn't inherit the parent's SecurityOrigin.
frame->navigationScheduler().scheduleLocationChange(securityOrigin(), SecurityOrigin::urlWithUniqueSecurityOrigin(), String());
addConsoleMessage(SecurityMessageSource, ErrorMessageLevel, message, requestIdentifier);
}
}
} else if (equalIgnoringCase(equiv, "content-security-policy"))
contentSecurityPolicy()->didReceiveHeader(content, ContentSecurityPolicy::Enforce);
else if (equalIgnoringCase(equiv, "content-security-policy-report-only"))
contentSecurityPolicy()->didReceiveHeader(content, ContentSecurityPolicy::Report);
else if (equalIgnoringCase(equiv, "x-webkit-csp"))
contentSecurityPolicy()->didReceiveHeader(content, ContentSecurityPolicy::PrefixedEnforce);
else if (equalIgnoringCase(equiv, "x-webkit-csp-report-only"))
contentSecurityPolicy()->didReceiveHeader(content, ContentSecurityPolicy::PrefixedReport);
}
// Though isspace() considers \t and \v to be whitespace, Win IE doesn't.
static bool isSeparator(UChar c)
{
return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '=' || c == ',' || c == '\0';
}
void Document::processArguments(const String& features, void* data, ArgumentsCallback callback)
{
// Tread lightly in this code -- it was specifically designed to mimic Win IE's parsing behavior.
int keyBegin, keyEnd;
int valueBegin, valueEnd;
int i = 0;
int length = features.length();
String buffer = features.lower();
while (i < length) {
// skip to first non-separator, but don't skip past the end of the string
while (isSeparator(buffer[i])) {
if (i >= length)
break;
i++;
}
keyBegin = i;
// skip to first separator
while (!isSeparator(buffer[i]))
i++;
keyEnd = i;
// skip to first '=', but don't skip past a ',' or the end of the string
while (buffer[i] != '=') {
if (buffer[i] == ',' || i >= length)
break;
i++;
}
// skip to first non-separator, but don't skip past a ',' or the end of the string
while (isSeparator(buffer[i])) {
if (buffer[i] == ',' || i >= length)
break;
i++;
}
valueBegin = i;
// skip to first separator
while (!isSeparator(buffer[i]))
i++;
valueEnd = i;
ASSERT_WITH_SECURITY_IMPLICATION(i <= length);
String keyString = buffer.substring(keyBegin, keyEnd - keyBegin);
String valueString = buffer.substring(valueBegin, valueEnd - valueBegin);
callback(keyString, valueString, this, data);
}
}
void Document::processViewport(const String& features, ViewportArguments::Type origin)
{
ASSERT(!features.isNull());
if (origin < m_viewportArguments.type)
return;
m_viewportArguments = ViewportArguments(origin);
processArguments(features, (void*)&m_viewportArguments, &setViewportFeature);
updateViewportArguments();
}
void Document::updateViewportArguments()
{
if (page() && frame()->isMainFrame()) {
#ifndef NDEBUG
m_didDispatchViewportPropertiesChanged = true;
#endif
page()->chrome().dispatchViewportPropertiesDidChange(m_viewportArguments);
}
}
void Document::processReferrerPolicy(const String& policy)
{
ASSERT(!policy.isNull());
m_referrerPolicy = ReferrerPolicyDefault;
if (equalIgnoringCase(policy, "never"))
m_referrerPolicy = ReferrerPolicyNever;
else if (equalIgnoringCase(policy, "always"))
m_referrerPolicy = ReferrerPolicyAlways;
else if (equalIgnoringCase(policy, "origin"))
m_referrerPolicy = ReferrerPolicyOrigin;
}
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.innerElement(), &event);
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 ENTITY_NODE:
case ENTITY_REFERENCE_NODE:
case NOTATION_NODE:
case TEXT_NODE:
case XPATH_NAMESPACE_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::canReplaceChild(Node* newChild, Node* oldChild)
{
if (!oldChild)
// ContainerNode::replaceChild will raise a NOT_FOUND_ERR.
return true;
if (oldChild->nodeType() == newChild->nodeType())
return true;
int numDoctypes = 0;
int numElements = 0;
// First, check how many doctypes and elements we have, not counting
// the child we're about to remove.
for (Node* c = firstChild(); c; c = c->nextSibling()) {
if (c == oldChild)
continue;
switch (c->nodeType()) {
case DOCUMENT_TYPE_NODE:
numDoctypes++;
break;
case ELEMENT_NODE:
numElements++;
break;
default:
break;
}
}
// Then, see how many doctypes and elements might be added by the new child.
if (newChild->nodeType() == DOCUMENT_FRAGMENT_NODE) {
for (Node* c = newChild->firstChild(); c; c = c->nextSibling()) {
switch (c->nodeType()) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_FRAGMENT_NODE:
case DOCUMENT_NODE:
case ENTITY_NODE:
case ENTITY_REFERENCE_NODE:
case NOTATION_NODE:
case TEXT_NODE:
case XPATH_NAMESPACE_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
break;
case DOCUMENT_TYPE_NODE:
numDoctypes++;
break;
case ELEMENT_NODE:
numElements++;
break;
}
}
} else {
switch (newChild->nodeType()) {
case ATTRIBUTE_NODE:
case CDATA_SECTION_NODE:
case DOCUMENT_FRAGMENT_NODE:
case DOCUMENT_NODE:
case ENTITY_NODE:
case ENTITY_REFERENCE_NODE:
case NOTATION_NODE:
case TEXT_NODE:
case XPATH_NAMESPACE_NODE:
return false;
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
return true;
case DOCUMENT_TYPE_NODE:
numDoctypes++;
break;
case ELEMENT_NODE:
numElements++;
break;
}
}
if (numElements > 1 || numDoctypes > 1)
return false;
return true;
}
PassRefPtr<Node> Document::cloneNode(bool /*deep*/)
{
// Spec says cloning Document nodes is "implementation dependent" and we do not support it.
return nullptr;
}
StyleSheetList* Document::styleSheets()
{
if (!m_styleSheetList)
m_styleSheetList = StyleSheetList::create(this);
return m_styleSheetList.get();
}
String Document::preferredStylesheetSet() const
{
return m_styleSheetCollection.preferredStylesheetSetName();
}
String Document::selectedStylesheetSet() const
{
return m_styleSheetCollection.selectedStylesheetSetName();
}
void Document::setSelectedStylesheetSet(const String& aString)
{
m_styleSheetCollection.setSelectedStylesheetSetName(aString);
styleResolverChanged(DeferRecalcStyle);
}
void Document::evaluateMediaQueryList()
{
if (m_mediaQueryMatcher)
m_mediaQueryMatcher->styleResolverChanged();
}
void Document::optimizedStyleSheetUpdateTimerFired(Timer<Document>*)
{
styleResolverChanged(RecalcStyleIfNeeded);
}
void Document::scheduleOptimizedStyleSheetUpdate()
{
if (m_optimizedStyleSheetUpdateTimer.isActive())
return;
m_styleSheetCollection.setPendingUpdateType(DocumentStyleSheetCollection::OptimizedUpdate);
m_optimizedStyleSheetUpdateTimer.startOneShot(0);
}
void Document::styleResolverChanged(StyleResolverUpdateFlag updateFlag)
{
if (m_optimizedStyleSheetUpdateTimer.isActive())
m_optimizedStyleSheetUpdateTimer.stop();
// Don't bother updating, since we haven't loaded all our style info yet
// and haven't calculated the style selector for the first time.
if (!attached() || (!m_didCalculateStyleResolver && !haveStylesheetsLoaded())) {
m_styleResolver.clear();
return;
}
m_didCalculateStyleResolver = true;
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Beginning update of style selector at time %d.\n", elapsedTime());
#endif
DocumentStyleSheetCollection::UpdateFlag styleSheetUpdate = (updateFlag == RecalcStyleIfNeeded || updateFlag == DeferRecalcStyleIfNeeded)
? DocumentStyleSheetCollection::OptimizedUpdate
: DocumentStyleSheetCollection::FullUpdate;
bool stylesheetChangeRequiresStyleRecalc = m_styleSheetCollection.updateActiveStyleSheets(styleSheetUpdate);
if (updateFlag == DeferRecalcStyle) {
scheduleForcedStyleRecalc();
return;
}
if (updateFlag == DeferRecalcStyleIfNeeded) {
if (stylesheetChangeRequiresStyleRecalc)
scheduleForcedStyleRecalc();
return;
}
if (didLayoutWithPendingStylesheets() && !m_styleSheetCollection.hasPendingSheets()) {
m_pendingSheetLayout = IgnoreLayoutWithPendingSheets;
if (renderView())
renderView()->repaintViewAndCompositedLayers();
}
if (!stylesheetChangeRequiresStyleRecalc)
return;
// This recalcStyle initiates a new recalc cycle. We need to bracket it to
// make sure animations get the correct update time
{
AnimationUpdateBlock animationUpdateBlock(m_frame ? &m_frame->animation() : nullptr);
recalcStyle(Style::Force);
}
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Finished update of style selector at time %d\n", elapsedTime());
#endif
if (renderView()) {
renderView()->setNeedsLayoutAndPrefWidthsRecalc();
if (view())
view()->scheduleRelayout();
}
evaluateMediaQueryList();
}
void Document::notifySeamlessChildDocumentsOfStylesheetUpdate() const
{
// If we're not in a frame yet any potential child documents won't have a StyleResolver to update.
if (!frame())
return;
// Seamless child frames are expected to notify their seamless children recursively, so we only do direct children.
for (Frame* child = frame()->tree().firstChild(); child; child = child->tree().nextSibling()) {
Document* childDocument = child->document();
if (childDocument->shouldDisplaySeamlesslyWithParent()) {
ASSERT(&childDocument->seamlessParentIFrame()->document() == this);
childDocument->seamlessParentUpdatedStylesheets();
}
}
}
void Document::removeFocusedNodeOfSubtree(Node* node, bool amongChildrenOnly)
{
if (!m_focusedElement || this->inPageCache()) // If the document is in the page cache, then we don't need to clear out the focused node.
return;
Element* focusedElement = node->treeScope().focusedElement();
if (!focusedElement)
return;
bool nodeInSubtree = false;
if (amongChildrenOnly)
nodeInSubtree = focusedElement->isDescendantOf(node);
else
nodeInSubtree = (focusedElement == node) || focusedElement->isDescendantOf(node);
if (nodeInSubtree)
setFocusedElement(nullptr);
}
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) || ENABLE(DRAGGABLE_REGION)
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(PassRefPtr<Element> prpNewFocusedElement, FocusDirection direction)
{
RefPtr<Element> newFocusedElement = prpNewFocusedElement;
// Make sure newFocusedElement is actually in this document
if (newFocusedElement && (&newFocusedElement->document() != this))
return true;
if (m_focusedElement == newFocusedElement)
return true;
if (m_inPageCache)
return false;
bool focusChangeBlocked = false;
RefPtr<Element> oldFocusedElement = m_focusedElement.release();
// Remove focus from the existing focus node (if any)
if (oldFocusedElement) {
if (oldFocusedElement->active())
oldFocusedElement->setActive(false);
oldFocusedElement->setFocus(false);
// Dispatch a change event for form control elements that have been edited.
if (oldFocusedElement->isFormControlElement()) {
HTMLFormControlElement* formControlElement = toHTMLFormControlElement(oldFocusedElement.get());
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);
if (m_focusedElement) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedElement = nullptr;
}
oldFocusedElement->dispatchFocusOutEvent(eventNames().focusoutEvent, newFocusedElement); // 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); // DOM level 2 name for compatibility.
if (m_focusedElement) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedElement = nullptr;
}
if (oldFocusedElement->isRootEditableElement())
frame()->editor().didEndEditing();
if (view()) {
if (Widget* oldWidget = widgetForElement(oldFocusedElement.get()))
oldWidget->setFocus(false);
else
view()->setFocus(false);
}
}
if (newFocusedElement && newFocusedElement->isFocusable()) {
if (newFocusedElement->isRootEditableElement() && !acceptsEditingFocus(newFocusedElement.get())) {
// delegate blocks focus change
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
// Set focus on the new node
m_focusedElement = newFocusedElement;
// Dispatch the focus event and let the node do any other focus related activities (important for text fields)
m_focusedElement->dispatchFocusEvent(oldFocusedElement, direction);
if (m_focusedElement != newFocusedElement) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedElement->dispatchFocusInEvent(eventNames().focusinEvent, oldFocusedElement); // 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); // DOM level 2 for compatibility.
if (m_focusedElement != newFocusedElement) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedElement->setFocus(true);
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->handleFocusedUIElementChanged(oldFocusedElement.get(), newFocusedElement.get());
}
if (!focusChangeBlocked && page())
page()->chrome().focusedElementChanged(m_focusedElement.get());
SetFocusedNodeDone:
updateStyleIfNeeded();
return !focusChangeBlocked;
}
void Document::setCSSTarget(Element* n)
{
if (m_cssTarget)
m_cssTarget->didAffectSelector(AffectedSelectorTarget);
m_cssTarget = n;
if (n)
n->didAffectSelector(AffectedSelectorTarget);
}
void Document::registerNodeList(LiveNodeListBase* list)
{
if (list->hasIdNameCache())
m_nodeListCounts[InvalidateOnIdNameAttrChange]++;
m_nodeListCounts[list->invalidationType()]++;
if (list->isRootedAtDocument())
m_listsInvalidatedAtDocument.add(list);
}
void Document::unregisterNodeList(LiveNodeListBase* list)
{
if (list->hasIdNameCache())
m_nodeListCounts[InvalidateOnIdNameAttrChange]--;
m_nodeListCounts[list->invalidationType()]--;
if (list->isRootedAtDocument()) {
ASSERT(m_listsInvalidatedAtDocument.contains(list));
m_listsInvalidatedAtDocument.remove(list);
}
}
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::moveNodeIteratorsToNewDocument(Node* node, Document* newDocument)
{
HashSet<NodeIterator*> nodeIteratorsList = m_nodeIterators;
HashSet<NodeIterator*>::const_iterator nodeIteratorsEnd = nodeIteratorsList.end();
for (HashSet<NodeIterator*>::const_iterator it = nodeIteratorsList.begin(); it != nodeIteratorsEnd; ++it) {
if ((*it)->root() == node) {
detachNodeIterator(*it);
newDocument->attachNodeIterator(*it);
}
}
}
void Document::updateRangesAfterChildrenChanged(ContainerNode& container)
{
if (!m_ranges.isEmpty()) {
for (auto it = m_ranges.begin(), end = m_ranges.end(); it != end; ++it)
(*it)->nodeChildrenChanged(container);
}
}
void Document::nodeChildrenWillBeRemoved(ContainerNode& container)
{
if (!m_ranges.isEmpty()) {
for (auto it = m_ranges.begin(), end = m_ranges.end(); it != end; ++it)
(*it)->nodeChildrenWillBeRemoved(container);
}
for (auto it = m_nodeIterators.begin(), end = m_nodeIterators.end(); it != end; ++it) {
for (Node* n = container.firstChild(); n; n = n->nextSibling())
(*it)->nodeWillBeRemoved(n);
}
if (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);
}
}
}
void Document::nodeWillBeRemoved(Node* n)
{
HashSet<NodeIterator*>::const_iterator nodeIteratorsEnd = m_nodeIterators.end();
for (HashSet<NodeIterator*>::const_iterator it = m_nodeIterators.begin(); it != nodeIteratorsEnd; ++it)
(*it)->nodeWillBeRemoved(n);
if (!m_ranges.isEmpty()) {
HashSet<Range*>::const_iterator rangesEnd = m_ranges.end();
for (HashSet<Range*>::const_iterator it = m_ranges.begin(); it != rangesEnd; ++it)
(*it)->nodeWillBeRemoved(n);
}
if (Frame* frame = this->frame()) {
frame->eventHandler().nodeWillBeRemoved(n);
frame->selection().nodeWillBeRemoved(n);
frame->page()->dragCaretController().nodeWillBeRemoved(n);
}
}
void Document::textInserted(Node* text, unsigned offset, unsigned length)
{
if (!m_ranges.isEmpty()) {
HashSet<Range*>::const_iterator end = m_ranges.end();
for (HashSet<Range*>::const_iterator it = m_ranges.begin(); it != end; ++it)
(*it)->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()) {
HashSet<Range*>::const_iterator end = m_ranges.end();
for (HashSet<Range*>::const_iterator it = m_ranges.begin(); it != end; ++it)
(*it)->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);
HashSet<Range*>::const_iterator end = m_ranges.end();
for (HashSet<Range*>::const_iterator it = m_ranges.begin(); it != end; ++it)
(*it)->textNodesMerged(oldNodeWithIndex, offset);
}
// FIXME: This should update markers for spelling and grammar checking.
}
void Document::textNodeSplit(Text* oldNode)
{
if (!m_ranges.isEmpty()) {
HashSet<Range*>::const_iterator end = m_ranges.end();
for (HashSet<Range*>::const_iterator it = m_ranges.begin(); it != end; ++it)
(*it)->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);
}
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(!document->inPageCache());
m_domWindow = document->m_domWindow.release();
m_domWindow->didSecureTransitionTo(this);
ASSERT(m_domWindow->document() == this);
ASSERT(m_domWindow->frame() == m_frame);
}
void Document::setWindowAttributeEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener)
{
if (!m_domWindow)
return;
m_domWindow->setAttributeEventListener(eventType, listener);
}
void Document::setWindowAttributeEventListener(const AtomicString& eventType, const QualifiedName& attributeName, const AtomicString& attributeValue)
{
if (!m_frame)
return;
setWindowAttributeEventListener(eventType, JSLazyEventListener::createForDOMWindow(*m_frame, attributeName, attributeValue));
}
EventListener* Document::getWindowAttributeEventListener(const AtomicString& eventType)
{
if (!m_domWindow)
return nullptr;
return m_domWindow->getAttributeEventListener(eventType);
}
void Document::dispatchWindowEvent(PassRefPtr<Event> event, PassRefPtr<EventTarget> target)
{
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
if (!m_domWindow)
return;
m_domWindow->dispatchEvent(event, target);
}
void Document::dispatchWindowLoadEvent()
{
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
if (!m_domWindow)
return;
m_domWindow->dispatchLoadEvent();
m_loadEventFinished = true;
}
void Document::enqueueWindowEvent(PassRefPtr<Event> event)
{
event->setTarget(m_domWindow.get());
m_eventQueue.enqueueEvent(event);
}
void Document::enqueueDocumentEvent(PassRefPtr<Event> event)
{
event->setTarget(this);
m_eventQueue.enqueueEvent(event);
}
PassRefPtr<Event> Document::createEvent(const String& eventType, ExceptionCode& ec)
{
RefPtr<Event> event = EventFactory::create(eventType);
if (event)
return event.release();
ec = NOT_SUPPORTED_ERR;
return nullptr;
}
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)
addListenerType(ANIMATIONSTART_LISTENER);
else if (eventType == eventNames().webkitAnimationEndEvent)
addListenerType(ANIMATIONEND_LISTENER);
else if (eventType == eventNames().webkitAnimationIterationEvent)
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);
}
CSSStyleDeclaration* Document::getOverrideStyle(Element*, const String&)
{
return nullptr;
}
HTMLFrameOwnerElement* Document::ownerElement() const
{
if (!frame())
return nullptr;
return frame()->ownerElement();
}
String Document::cookie(ExceptionCode& ec) const
{
if (page() && !page()->settings().cookieEnabled())
return String();
// FIXME: The HTML5 DOM spec states that this attribute can raise an
// INVALID_STATE_ERR exception on getting if the Document has no
// browsing context.
if (!securityOrigin()->canAccessCookies()) {
ec = SECURITY_ERR;
return String();
}
URL cookieURL = this->cookieURL();
if (cookieURL.isEmpty())
return String();
return cookies(this, cookieURL);
}
void Document::setCookie(const String& value, ExceptionCode& ec)
{
if (page() && !page()->settings().cookieEnabled())
return;
// FIXME: The HTML5 DOM spec states that this attribute can raise an
// INVALID_STATE_ERR exception on setting if the Document has no
// browsing context.
if (!securityOrigin()->canAccessCookies()) {
ec = SECURITY_ERR;
return;
}
URL cookieURL = this->cookieURL();
if (cookieURL.isEmpty())
return;
setCookies(this, cookieURL, value);
}
String Document::referrer() const
{
if (frame())
return frame()->loader().referrer();
return String();
}
String Document::domain() const
{
return securityOrigin()->domain();
}
void Document::setDomain(const String& newDomain, ExceptionCode& ec)
{
if (SchemeRegistry::isDomainRelaxationForbiddenForURLScheme(securityOrigin()->protocol())) {
ec = SECURITY_ERR;
return;
}
// Both NS and IE specify that changing the domain is only allowed when
// the new domain is a suffix of the old domain.
// FIXME: We should add logging indicating why a domain was not allowed.
// If the new domain is the same as the old domain, 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 (equalIgnoringCase(domain(), newDomain)) {
securityOrigin()->setDomainFromDOM(newDomain);
return;
}
int oldLength = domain().length();
int newLength = newDomain.length();
// e.g. newDomain = webkit.org (10) and domain() = www.webkit.org (14)
if (newLength >= oldLength) {
ec = SECURITY_ERR;
return;
}
String test = domain();
// Check that it's a subdomain, not e.g. "ebkit.org"
if (test[oldLength - newLength - 1] != '.') {
ec = SECURITY_ERR;
return;
}
// Now test is "webkit.org" from domain()
// and we check that it's the same thing as newDomain
test.remove(0, oldLength - newLength);
if (test != newDomain) {
ec = SECURITY_ERR;
return;
}
securityOrigin()->setDomainFromDOM(newDomain);
}
// http://www.whatwg.org/specs/web-apps/current-work/#dom-document-lastmodified
String Document::lastModified() const
{
DateComponents date;
bool foundDate = false;
if (m_frame) {
String httpLastModified;
if (DocumentLoader* documentLoader = loader())
httpLastModified = documentLoader->response().httpHeaderField("Last-Modified");
if (!httpLastModified.isEmpty()) {
date.setMillisecondsSinceEpochForDateTime(parseDate(httpLastModified));
foundDate = true;
}
}
// FIXME: If this document came from the file system, the HTML5
// specificiation tells us to read the last modification date from the file
// system.
if (!foundDate)
date.setMillisecondsSinceEpochForDateTime(currentTimeMS());
return String::format("%02d/%02d/%04d %02d:%02d:%02d", date.month() + 1, date.monthDay(), date.fullYear(), date.hour(), date.minute(), date.second());
}
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);
}
bool Document::parseQualifiedName(const String& qualifiedName, String& prefix, String& localName, ExceptionCode& ec)
{
unsigned length = qualifiedName.length();
if (!length) {
ec = INVALID_CHARACTER_ERR;
return false;
}
bool nameStart = true;
bool sawColon = false;
int colonPos = 0;
const UChar* s = qualifiedName.characters();
for (unsigned i = 0; i < length;) {
UChar32 c;
U16_NEXT(s, i, length, c)
if (c == ':') {
if (sawColon) {
ec = NAMESPACE_ERR;
return false; // multiple colons: not allowed
}
nameStart = true;
sawColon = true;
colonPos = i - 1;
} else if (nameStart) {
if (!isValidNameStart(c)) {
ec = INVALID_CHARACTER_ERR;
return false;
}
nameStart = false;
} else {
if (!isValidNamePart(c)) {
ec = INVALID_CHARACTER_ERR;
return false;
}
}
}
if (!sawColon) {
prefix = String();
localName = qualifiedName;
} else {
prefix = qualifiedName.substring(0, colonPos);
if (prefix.isEmpty()) {
ec = NAMESPACE_ERR;
return false;
}
localName = qualifiedName.substring(colonPos + 1);
}
if (localName.isEmpty()) {
ec = NAMESPACE_ERR;
return false;
}
return true;
}
void Document::setDecoder(PassRefPtr<TextResourceDecoder> decoder)
{
m_decoder = 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);
}
void Document::setInPageCache(bool flag)
{
if (m_inPageCache == flag)
return;
m_inPageCache = flag;
FrameView* v = view();
Page* page = this->page();
if (page)
page->lockAllOverlayScrollbarsToHidden(flag);
if (flag) {
ASSERT(!m_savedRenderView);
m_savedRenderView = renderView();
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();
} else
v->resetScrollbars();
}
m_styleRecalcTimer.stop();
} else {
ASSERT(!renderView() || renderView() == m_savedRenderView);
ASSERT(m_renderArena);
setRenderView(m_savedRenderView);
m_savedRenderView = nullptr;
if (childNeedsStyleRecalc())
scheduleStyleRecalc();
}
}
void Document::documentWillBecomeInactive()
{
#if USE(ACCELERATED_COMPOSITING)
if (renderView())
renderView()->setIsInWindow(false);
#endif
}
void Document::documentWillSuspendForPageCache()
{
documentWillBecomeInactive();
HashSet<Element*>::iterator end = m_documentSuspensionCallbackElements.end();
for (HashSet<Element*>::iterator i = m_documentSuspensionCallbackElements.begin(); i != end; ++i)
(*i)->documentWillSuspendForPageCache();
#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
}
void Document::documentDidResumeFromPageCache()
{
Vector<Element*> elements;
copyToVector(m_documentSuspensionCallbackElements, elements);
Vector<Element*>::iterator end = elements.end();
for (Vector<Element*>::iterator i = elements.begin(); i != end; ++i)
(*i)->documentDidResumeFromPageCache();
#if USE(ACCELERATED_COMPOSITING)
if (renderView())
renderView()->setIsInWindow(true);
#endif
ASSERT(page());
page()->lockAllOverlayScrollbarsToHidden(false);
ASSERT(m_frame);
m_frame->loader().client().dispatchDidBecomeFrameset(isFrameSet());
}
void Document::registerForPageCacheSuspensionCallbacks(Element* e)
{
m_documentSuspensionCallbackElements.add(e);
}
void Document::unregisterForPageCacheSuspensionCallbacks(Element* e)
{
m_documentSuspensionCallbackElements.remove(e);
}
void Document::mediaVolumeDidChange()
{
HashSet<Element*>::iterator end = m_mediaVolumeCallbackElements.end();
for (HashSet<Element*>::iterator i = m_mediaVolumeCallbackElements.begin(); i != end; ++i)
(*i)->mediaVolumeDidChange();
}
void Document::registerForMediaVolumeCallbacks(Element* e)
{
m_mediaVolumeCallbackElements.add(e);
}
void Document::unregisterForMediaVolumeCallbacks(Element* e)
{
m_mediaVolumeCallbackElements.remove(e);
}
void Document::storageBlockingStateDidChange()
{
if (Settings* settings = this->settings())
securityOrigin()->setStorageBlockingPolicy(settings->storageBlockingPolicy());
}
void Document::privateBrowsingStateDidChange()
{
HashSet<Element*>::iterator end = m_privateBrowsingStateChangedElements.end();
for (HashSet<Element*>::iterator it = m_privateBrowsingStateChangedElements.begin(); it != end; ++it)
(*it)->privateBrowsingStateDidChange();
}
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()
{
HashSet<Element*>::iterator end = m_captionPreferencesChangedElements.end();
for (HashSet<Element*>::iterator it = m_captionPreferencesChangedElements.begin(); it != end; ++it)
(*it)->captionPreferencesChanged();
}
#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)
{
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)
{
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();
}
URL Document::openSearchDescriptionURL()
{
static const char* const openSearchMIMEType = "application/opensearchdescription+xml";
static const char* const openSearchRelation = "search";
// FIXME: Why do only top-level frames have openSearchDescriptionURLs?
if (!frame() || frame()->tree().parent())
return URL();
// FIXME: Why do we need to wait for FrameStateComplete?
if (frame()->loader().state() != FrameStateComplete)
return URL();
if (!head())
return URL();
RefPtr<HTMLCollection> children = head()->children();
for (unsigned i = 0; Node* child = children->item(i); i++) {
if (!child->hasTagName(linkTag))
continue;
HTMLLinkElement* linkElement = static_cast<HTMLLinkElement*>(child);
if (!equalIgnoringCase(linkElement->type(), openSearchMIMEType) || !equalIgnoringCase(linkElement->rel(), openSearchRelation))
continue;
if (linkElement->href().isEmpty())
continue;
return linkElement->href();
}
return URL();
}
void Document::pushCurrentScript(PassRefPtr<HTMLScriptElement> newCurrentScript)
{
ASSERT(newCurrentScript);
m_currentScriptStack.append(newCurrentScript);
}
void Document::popCurrentScript()
{
ASSERT(!m_currentScriptStack.isEmpty());
m_currentScriptStack.removeLast();
}
#if ENABLE(XSLT)
void Document::applyXSLTransform(ProcessingInstruction* pi)
{
RefPtr<XSLTProcessor> processor = XSLTProcessor::create();
processor->setXSLStyleSheet(static_cast<XSLStyleSheet*>(pi->sheet()));
String resultMIMEType;
String newSource;
String resultEncoding;
if (!processor->transformToString(*this, resultMIMEType, newSource, resultEncoding))
return;
// FIXME: If the transform failed we should probably report an error (like Mozilla does).
Frame* ownerFrame = frame();
processor->createDocumentFromSource(newSource, resultEncoding, resultMIMEType, this, ownerFrame);
InspectorInstrumentation::frameDocumentUpdated(ownerFrame);
}
void Document::setTransformSource(PassOwnPtr<TransformSource> source)
{
m_transformSource = 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();
}
Document::InheritedBool Document::getDesignMode() const
{
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: Why does this walk up owner elements instead using the frame tree as parentDocument does?
// The frame tree even has a top() function.
Document* document = const_cast<Document*>(this);
while (Element* element = document->ownerElement())
document = &element->document();
return document;
}
PassRefPtr<Attr> Document::createAttribute(const String& name, ExceptionCode& ec)
{
return createAttributeNS(String(), name, ec, true);
}
PassRefPtr<Attr> Document::createAttributeNS(const String& namespaceURI, const String& qualifiedName, ExceptionCode& ec, bool shouldIgnoreNamespaceChecks)
{
String prefix, localName;
if (!parseQualifiedName(qualifiedName, prefix, localName, ec))
return nullptr;
QualifiedName qName(prefix, localName, namespaceURI);
if (!shouldIgnoreNamespaceChecks && !hasValidNamespaceForAttributes(qName)) {
ec = NAMESPACE_ERR;
return nullptr;
}
return Attr::create(*this, qName, emptyString());
}
#if ENABLE(SVG)
const SVGDocumentExtensions* Document::svgExtensions()
{
return m_svgExtensions.get();
}
SVGDocumentExtensions* Document::accessSVGExtensions()
{
if (!m_svgExtensions)
m_svgExtensions = adoptPtr(new SVGDocumentExtensions(this));
return m_svgExtensions.get();
}
bool Document::hasSVGRootNode() const
{
return documentElement() && documentElement()->hasTagName(SVGNames::svgTag);
}
#endif
PassRefPtr<HTMLCollection> Document::ensureCachedCollection(CollectionType type)
{
return ensureRareData().ensureNodeLists().addCacheWithAtomicName<HTMLCollection>(*this, type);
}
PassRefPtr<HTMLCollection> Document::images()
{
return ensureCachedCollection(DocImages);
}
PassRefPtr<HTMLCollection> Document::applets()
{
return ensureCachedCollection(DocApplets);
}
PassRefPtr<HTMLCollection> Document::embeds()
{
return ensureCachedCollection(DocEmbeds);
}
PassRefPtr<HTMLCollection> Document::plugins()
{
// This is an alias for embeds() required for the JS DOM bindings.
return ensureCachedCollection(DocEmbeds);
}
PassRefPtr<HTMLCollection> Document::scripts()
{
return ensureCachedCollection(DocScripts);
}
PassRefPtr<HTMLCollection> Document::links()
{
return ensureCachedCollection(DocLinks);
}
PassRefPtr<HTMLCollection> Document::forms()
{
return ensureCachedCollection(DocForms);
}
PassRefPtr<HTMLCollection> Document::anchors()
{
return ensureCachedCollection(DocAnchors);
}
PassRefPtr<HTMLCollection> Document::all()
{
return ensureRareData().ensureNodeLists().addCacheWithAtomicName<HTMLAllCollection>(*this, DocAll);
}
PassRefPtr<HTMLCollection> Document::windowNamedItems(const AtomicString& name)
{
return ensureRareData().ensureNodeLists().addCacheWithAtomicName<WindowNameCollection>(*this, WindowNamedItems, name);
}
PassRefPtr<HTMLCollection> Document::documentNamedItems(const AtomicString& name)
{
return ensureRareData().ensureNodeLists().addCacheWithAtomicName<DocumentNameCollection>(*this, DocumentNamedItems, name);
}
void Document::finishedParsing()
{
ASSERT(!scriptableDocumentParser() || !m_parser->isParsing());
ASSERT(!scriptableDocumentParser() || m_readyState != Loading);
setParsing(false);
#if ENABLE(WEB_TIMING)
if (!m_documentTiming.domContentLoadedEventStart)
m_documentTiming.domContentLoadedEventStart = monotonicallyIncreasingTime();
#endif
dispatchEvent(Event::create(eventNames().DOMContentLoadedEvent, true, false));
#if ENABLE(WEB_TIMING)
if (!m_documentTiming.domContentLoadedEventEnd)
m_documentTiming.domContentLoadedEventEnd = monotonicallyIncreasingTime();
#endif
if (RefPtr<Frame> f = frame()) {
// 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 recalcStyle(). 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();
f->loader().finishedParsing();
InspectorInstrumentation::domContentLoadedEventFired(f.get());
}
// 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 int timeToKeepSharedObjectPoolAliveAfterParsingFinishedInSeconds = 10;
m_sharedObjectPoolClearTimer.startOneShot(timeToKeepSharedObjectPoolAliveAfterParsingFinishedInSeconds);
// Parser should have picked up all preloads by now
m_cachedResourceLoader->clearPreloads();
}
void Document::sharedObjectPoolClearTimerFired(Timer<Document>*)
{
m_sharedObjectPool.clear();
}
void Document::didAccessStyleResolver()
{
m_styleResolverThrowawayTimer.restart();
}
void Document::styleResolverThrowawayTimerFired(DeferrableOneShotTimer<Document>*)
{
ASSERT(!m_inStyleRecalc);
clearStyleResolver();
}
PassRefPtr<XPathExpression> Document::createExpression(const String& expression,
XPathNSResolver* resolver,
ExceptionCode& ec)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = XPathEvaluator::create();
return m_xpathEvaluator->createExpression(expression, resolver, ec);
}
PassRefPtr<XPathNSResolver> Document::createNSResolver(Node* nodeResolver)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = XPathEvaluator::create();
return m_xpathEvaluator->createNSResolver(nodeResolver);
}
PassRefPtr<XPathResult> Document::evaluate(const String& expression,
Node* contextNode,
XPathNSResolver* resolver,
unsigned short type,
XPathResult* result,
ExceptionCode& ec)
{
if (!m_xpathEvaluator)
m_xpathEvaluator = XPathEvaluator::create();
return m_xpathEvaluator->evaluate(expression, contextNode, resolver, type, result, ec);
}
const Vector<IconURL>& Document::shortcutIconURLs()
{
// Include any icons where type = link, rel = "shortcut icon".
return iconURLs(Favicon);
}
const Vector<IconURL>& Document::iconURLs(int iconTypesMask)
{
m_iconURLs.clear();
if (!head() || !(head()->children()))
return m_iconURLs;
RefPtr<HTMLCollection> children = head()->children();
unsigned int length = children->length();
for (unsigned int i = 0; i < length; ++i) {
Node* child = children->item(i);
if (!child->hasTagName(linkTag))
continue;
HTMLLinkElement* linkElement = static_cast<HTMLLinkElement*>(child);
if (!(linkElement->iconType() & iconTypesMask))
continue;
if (linkElement->href().isEmpty())
continue;
// Put it at the front to ensure that icons seen later take precedence as required by the spec.
IconURL newURL(linkElement->href(), linkElement->iconSizes(), linkElement->type(), linkElement->iconType());
m_iconURLs.append(newURL);
}
m_iconURLs.reverse();
return m_iconURLs;
}
void Document::addIconURL(const String& url, const String&, const String&, IconType iconType)
{
if (url.isEmpty())
return;
Frame* f = frame();
if (!f)
return;
f->loader().didChangeIcons(iconType);
}
static bool isEligibleForSeamless(Document* parent, Document* child)
{
// It should not matter what we return for the top-most document.
if (!parent)
return false;
if (parent->isSandboxed(SandboxSeamlessIframes))
return false;
if (child->isSrcdocDocument())
return true;
if (parent->securityOrigin()->canAccess(child->securityOrigin()))
return true;
return parent->securityOrigin()->canRequest(child->url());
}
void Document::initSecurityContext()
{
if (haveInitializedSecurityOrigin()) {
ASSERT(securityOrigin());
return;
}
if (!m_frame) {
// No source for a security context.
// This can occur via document.implementation.createDocument().
m_cookieURL = URL(ParsedURLString, emptyString());
setSecurityOrigin(SecurityOrigin::createUnique());
setContentSecurityPolicy(ContentSecurityPolicy::create(this));
return;
}
// In the common case, create the security context from the currently
// loading URL with a fresh content security policy.
m_cookieURL = m_url;
enforceSandboxFlags(m_frame->loader().effectiveSandboxFlags());
setSecurityOrigin(isSandboxed(SandboxOrigin) ? SecurityOrigin::createUnique() : SecurityOrigin::create(m_url));
setContentSecurityPolicy(ContentSecurityPolicy::create(this));
if (Settings* settings = this->settings()) {
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()->enforceFilePathSeparation();
}
}
securityOrigin()->setStorageBlockingPolicy(settings->storageBlockingPolicy());
}
Document* parentDocument = ownerElement() ? &ownerElement()->document() : nullptr;
if (parentDocument && m_frame->loader().shouldTreatURLAsSrcdocDocument(url())) {
m_isSrcdocDocument = true;
setBaseURLOverride(parentDocument->baseURL());
}
// FIXME: What happens if we inherit the security origin? This check may need to be later.
// <iframe seamless src="about:blank"> likely won't work as-is.
m_mayDisplaySeamlesslyWithParent = isEligibleForSeamless(parentDocument, this);
if (!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* ownerFrame = m_frame->tree().parent();
if (!ownerFrame)
ownerFrame = m_frame->loader().opener();
if (!ownerFrame) {
didFailToInitializeSecurityOrigin();
return;
}
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;
}
m_cookieURL = ownerFrame->document()->cookieURL();
// We alias the SecurityOrigins to match Firefox, see Bug 15313
// https://bugs.webkit.org/show_bug.cgi?id=15313
setSecurityOrigin(ownerFrame->document()->securityOrigin());
}
void Document::initContentSecurityPolicy()
{
if (!m_frame->tree().parent() || (!shouldInheritSecurityOriginFromOwner(m_url) && !isPluginDocument()))
return;
contentSecurityPolicy()->copyStateFrom(m_frame->tree().parent()->document()->contentSecurityPolicy());
}
bool Document::isContextThread() const
{
return isMainThread();
}
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(PassRefPtr<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)
enqueuePopstateEvent(stateObject);
else
m_pendingStateObject = stateObject;
}
void Document::updateFocusAppearanceSoon(bool restorePreviousSelection)
{
m_updateFocusAppearanceRestoresSelection = restorePreviousSelection;
if (!m_updateFocusAppearanceTimer.isActive())
m_updateFocusAppearanceTimer.startOneShot(0);
}
void Document::cancelFocusAppearanceUpdate()
{
m_updateFocusAppearanceTimer.stop();
}
void Document::resetHiddenFocusElementSoon()
{
if (!m_resetHiddenFocusElementTimer.isActive() && m_focusedElement)
m_resetHiddenFocusElementTimer.startOneShot(0);
}
void Document::updateFocusAppearanceTimerFired(Timer<Document>*)
{
Element* element = focusedElement();
if (!element)
return;
updateLayout();
if (element->isFocusable())
element->updateFocusAppearance(m_updateFocusAppearanceRestoresSelection);
}
void Document::resetHiddenFocusElementTimer(Timer<Document>*)
{
if (view() && view()->needsLayout())
return;
if (m_focusedElement && !m_focusedElement->isFocusable())
setFocusedElement(nullptr);
}
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);
}
CanvasRenderingContext* Document::getCSSCanvasContext(const String& type, const String& name, int width, int height)
{
HTMLCanvasElement* element = getCSSCanvasElement(name);
if (!element)
return nullptr;
element->setSize(IntSize(width, height));
return element->getContext(type);
}
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();
}
#if ENABLE(IOS_TEXT_AUTOSIZING)
void Document::addAutoSizingNode(Node* node, float candidateSize)
{
TextAutoSizingKey key(node->renderer()->style(), &document());
TextAutoSizingMap::AddResult result = m_textAutoSizedNodes.add(key, nullptr);
if (result.isNewEntry)
result.iterator->value = TextAutoSizingValue::create();
result.iterator->value->addNode(node, candidateSize);
}
void Document::validateAutoSizingNodes()
{
Vector<TextAutoSizingKey> nodesForRemoval;
for (auto it = m_textAutoSizedNodes.begin(), end = m_textAutoSizedNodes.end(); it != end; ++it) {
RefPtr<TextAutoSizingValue> value = it->value;
// Update all the nodes in the collection to reflect the new
// candidate size.
if (!value)
continue;
value->adjustNodeSizes();
if (!value->numNodes())
nodesForRemoval.append(it->key);
}
unsigned count = nodesForRemoval.size();
for (unsigned i = 0; i < count; i++)
m_textAutoSizedNodes.remove(nodesForRemoval[i]);
}
void Document::resetAutoSizingNodes()
{
for (auto it = m_textAutoSizedNodes.begin(), end = m_textAutoSizedNodes.end(); it != end; ++it) {
RefPtr<TextAutoSizingValue> value = it->value;
if (value)
value->reset();
}
m_textAutoSizedNodes.clear();
}
#endif // ENABLE(IOS_TEXT_AUTOSIZING)
void Document::initDNSPrefetch()
{
Settings* settings = this->settings();
m_haveExplicitlyDisabledDNSPrefetch = false;
m_isDNSPrefetchEnabled = settings && 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 (equalIgnoringCase(dnsPrefetchControl, "on") && !m_haveExplicitlyDisabledDNSPrefetch) {
m_isDNSPrefetchEnabled = true;
return;
}
m_isDNSPrefetchEnabled = false;
m_haveExplicitlyDisabledDNSPrefetch = true;
}
void Document::addConsoleMessage(MessageSource source, MessageLevel level, const String& message, unsigned long requestIdentifier)
{
if (!isContextThread()) {
postTask(AddConsoleMessageTask::create(source, level, message));
return;
}
if (Page* page = this->page())
page->console().addMessage(source, level, message, requestIdentifier, this);
}
void Document::addMessage(MessageSource source, MessageLevel level, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, PassRefPtr<ScriptCallStack> callStack, JSC::ExecState* state, unsigned long requestIdentifier)
{
if (!isContextThread()) {
postTask(AddConsoleMessageTask::create(source, level, message));
return;
}
if (Page* page = this->page())
page->console().addMessage(source, level, message, sourceURL, lineNumber, columnNumber, callStack, state, requestIdentifier);
}
SecurityOrigin* Document::topOrigin() const
{
return topDocument()->securityOrigin();
}
struct PerformTaskContext {
WTF_MAKE_NONCOPYABLE(PerformTaskContext); WTF_MAKE_FAST_ALLOCATED;
public:
PerformTaskContext(WeakPtr<Document> document, PassOwnPtr<ScriptExecutionContext::Task> task)
: documentReference(document)
, task(task)
{
}
WeakPtr<Document> documentReference;
OwnPtr<ScriptExecutionContext::Task> task;
};
void Document::didReceiveTask(void* untypedContext)
{
ASSERT(isMainThread());
OwnPtr<PerformTaskContext> context = adoptPtr(static_cast<PerformTaskContext*>(untypedContext));
ASSERT(context);
Document* document = context->documentReference.get();
if (!document)
return;
Page* page = document->page();
if ((page && page->defersLoading()) || !document->m_pendingTasks.isEmpty()) {
document->m_pendingTasks.append(context->task.release());
return;
}
context->task->performTask(document);
}
void Document::postTask(PassOwnPtr<Task> task)
{
callOnMainThread(didReceiveTask, new PerformTaskContext(m_weakFactory.createWeakPtr(), task));
}
void Document::pendingTasksTimerFired(Timer<Document>*)
{
while (!m_pendingTasks.isEmpty()) {
OwnPtr<Task> task = m_pendingTasks[0].release();
m_pendingTasks.remove(0);
task->performTask(this);
}
}
void Document::suspendScheduledTasks(ActiveDOMObject::ReasonForSuspension reason)
{
ASSERT(!m_scheduledTasksAreSuspended);
suspendScriptedAnimationControllerCallbacks();
suspendActiveDOMObjects(reason);
scriptRunner()->suspend();
m_pendingTasksTimer.stop();
// 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 (!m_pendingTasks.isEmpty())
m_pendingTasksTimer.startOneShot(0);
scriptRunner()->resume();
resumeActiveDOMObjects(reason);
resumeScriptedAnimationControllerCallbacks();
m_scheduledTasksAreSuspended = false;
}
void Document::suspendScriptedAnimationControllerCallbacks()
{
#if ENABLE(REQUEST_ANIMATION_FRAME)
if (m_scriptedAnimationController)
m_scriptedAnimationController->suspend();
#endif
}
void Document::resumeScriptedAnimationControllerCallbacks()
{
#if ENABLE(REQUEST_ANIMATION_FRAME)
if (m_scriptedAnimationController)
m_scriptedAnimationController->resume();
#endif
}
void Document::scriptedAnimationControllerSetThrottled(bool isThrottled)
{
#if ENABLE(REQUEST_ANIMATION_FRAME)
if (m_scriptedAnimationController)
m_scriptedAnimationController->setThrottled(isThrottled);
#endif
}
void Document::windowScreenDidChange(PlatformDisplayID displayID)
{
UNUSED_PARAM(displayID);
#if ENABLE(REQUEST_ANIMATION_FRAME)
if (m_scriptedAnimationController)
m_scriptedAnimationController->windowScreenDidChange(displayID);
#endif
#if USE(ACCELERATED_COMPOSITING)
if (RenderView* view = renderView()) {
if (view->usesCompositing())
view->compositor().windowScreenDidChange(displayID);
}
#endif
}
String Document::displayStringModifiedByEncoding(const String& str) const
{
if (m_decoder)
return m_decoder->encoding().displayString(str.impl());
return str;
}
PassRefPtr<StringImpl> Document::displayStringModifiedByEncoding(PassRefPtr<StringImpl> str) const
{
if (m_decoder)
return m_decoder->encoding().displayString(str);
return str;
}
template <typename CharacterType>
void Document::displayBufferModifiedByEncodingInternal(CharacterType* buffer, unsigned len) const
{
if (m_decoder)
m_decoder->encoding().displayBuffer(buffer, len);
}
// Generate definitions for both character types
template void Document::displayBufferModifiedByEncodingInternal<LChar>(LChar*, unsigned) const;
template void Document::displayBufferModifiedByEncodingInternal<UChar>(UChar*, unsigned) const;
void Document::enqueuePageshowEvent(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::enqueuePopstateEvent(PassRefPtr<SerializedScriptValue> stateObject)
{
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=36202 Popstate event needs to fire asynchronously
dispatchWindowEvent(PopStateEvent::create(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()
{
HashSet<MediaCanStartListener*>::iterator slot = m_mediaCanStartListeners.begin();
if (slot == m_mediaCanStartListeners.end())
return nullptr;
MediaCanStartListener* listener = *slot;
m_mediaCanStartListeners.remove(slot);
return listener;
}
#if ENABLE(FULLSCREEN_API)
bool Document::fullScreenIsAllowedForElement(Element* element) const
{
ASSERT(element);
return isAttributeOnAllOwners(allowfullscreenAttr, webkitallowfullscreenAttr, element->document().ownerElement());
}
void Document::requestFullScreenForElement(Element* element, unsigned short flags, FullScreenCheckType checkType)
{
// The Mozilla Full Screen API <https://wiki.mozilla.org/Gecko:FullScreenAPI> has different requirements
// for full screen mode, and do not have the concept of a full screen element stack.
bool inLegacyMozillaMode = (flags & Element::LEGACY_MOZILLA_REQUEST);
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->inDocument())
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. (NOTE: Ignore this requirement if the request was
// made via the legacy Mozilla-style API.)
if (!m_fullScreenElementStack.isEmpty() && !m_fullScreenElementStack.last()->contains(element) && !inLegacyMozillaMode)
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 && !inLegacyMozillaMode)
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 (!ScriptController::processingUserGesture())
break;
// There is a previously-established user preference, security risk, or platform limitation.
if (!page() || !page()->settings().fullScreenEnabled())
break;
if (!page()->chrome().client().supportsFullScreenForElement(element, flags & Element::ALLOW_KEYBOARD_INPUT)) {
// 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.
if (!inLegacyMozillaMode && flags & Element::ALLOW_KEYBOARD_INPUT) {
flags &= ~Element::ALLOW_KEYBOARD_INPUT;
if (!page()->chrome().client().supportsFullScreenForElement(element, false))
break;
} else
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 = flags & Element::ALLOW_KEYBOARD_INPUT;
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_fullScreenChangeDelayTimer.startOneShot(0);
}
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."
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 (Deque<RefPtr<Document>>::iterator i = descendants.begin(); i != descendants.end(); ++i) {
(*i)->clearFullscreenElementStack();
addDocumentToFullScreenChangeEventQueue(i->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->inDocument() || &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.
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(m_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());
}
void Document::webkitWillEnterFullScreenForElement(Element* element)
{
if (!attached() || inPageCache())
return;
ASSERT(element);
// Protect against being called after the document has been removed from the page.
if (!page())
return;
ASSERT(page()->settings().fullScreenEnabled());
if (m_fullScreenRenderer)
m_fullScreenRenderer->unwrapRenderer();
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 = renderer && renderer->isBox();
if (shouldCreatePlaceholder) {
m_savedPlaceholderFrameRect = toRenderBox(renderer)->frameRect();
m_savedPlaceholderRenderStyle = RenderStyle::clone(&renderer->style());
}
if (m_fullScreenElement != documentElement())
RenderFullScreen::wrapRenderer(renderer, renderer ? renderer->parent() : nullptr, *this);
m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true);
recalcStyle(Style::Force);
}
void Document::webkitDidEnterFullScreenForElement(Element*)
{
if (!m_fullScreenElement)
return;
if (!attached() || inPageCache())
return;
m_fullScreenElement->didBecomeFullscreenElement();
m_fullScreenChangeDelayTimer.startOneShot(0);
}
void Document::webkitWillExitFullScreenForElement(Element*)
{
if (!m_fullScreenElement)
return;
if (!attached() || inPageCache())
return;
m_fullScreenElement->willStopBeingFullscreenElement();
}
void Document::webkitDidExitFullScreenForElement(Element*)
{
if (!m_fullScreenElement)
return;
if (!attached() || inPageCache())
return;
m_fullScreenElement->setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(false);
m_areKeysEnabledInFullScreen = false;
if (m_fullScreenRenderer)
m_fullScreenRenderer->unwrapRenderer();
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.
Document* exitingDocument = this;
if (m_fullScreenChangeEventTargetQueue.isEmpty() && m_fullScreenErrorEventTargetQueue.isEmpty())
exitingDocument = topDocument();
exitingDocument->m_fullScreenChangeDelayTimer.startOneShot(0);
}
void Document::setFullScreenRenderer(RenderFullScreen* renderer)
{
if (renderer == m_fullScreenRenderer)
return;
if (renderer && m_savedPlaceholderRenderStyle)
renderer->createPlaceholder(m_savedPlaceholderRenderStyle.releaseNonNull(), m_savedPlaceholderFrameRect);
else if (renderer && m_fullScreenRenderer && m_fullScreenRenderer->placeholder()) {
RenderBlock* placeholder = m_fullScreenRenderer->placeholder();
renderer->createPlaceholder(RenderStyle::clone(&placeholder->style()), placeholder->frameRect());
}
if (m_fullScreenRenderer)
m_fullScreenRenderer->destroy();
ASSERT(!m_fullScreenRenderer);
m_fullScreenRenderer = renderer;
// This notification can come in after the page has been destroyed.
if (page())
page()->chrome().client().fullScreenRendererChanged(m_fullScreenRenderer);
}
void Document::fullScreenRendererDestroyed()
{
m_fullScreenRenderer = nullptr;
if (page())
page()->chrome().client().fullScreenRendererChanged(nullptr);
}
void Document::fullScreenChangeDelayTimerFired(Timer<Document>*)
{
// 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> protect(*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->inDocument())
queue.append(documentElement());
#if ENABLE(VIDEO)
if (shouldNotifyMediaElement && isHTMLMediaElement(*node))
toHTMLMediaElement(*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->setNeedsStyleRecalc();
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::webkitExitPointerLock()
{
if (!page())
return;
if (Element* target = page()->pointerLockController()->element()) {
if (target->document() != this)
return;
}
page()->pointerLockController()->requestPointerUnlock();
}
Element* Document::webkitPointerLockElement() const
{
if (!page() || page()->pointerLockController()->lockPending())
return nullptr;
if (Element* element = page()->pointerLockController()->element()) {
if (element->document() == this)
return element;
}
return nullptr;
}
#endif
void Document::decrementLoadEventDelayCount()
{
ASSERT(m_loadEventDelayCount);
--m_loadEventDelayCount;
if (frame() && !m_loadEventDelayCount && !m_loadEventDelayTimer.isActive())
m_loadEventDelayTimer.startOneShot(0);
}
void Document::loadEventDelayTimerFired(Timer<Document>*)
{
if (frame())
frame()->loader().checkCompleted();
}
#if ENABLE(REQUEST_ANIMATION_FRAME)
int Document::requestAnimationFrame(PassRefPtr<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();
}
return m_scriptedAnimationController->registerCallback(callback);
}
void Document::cancelAnimationFrame(int id)
{
if (!m_scriptedAnimationController)
return;
m_scriptedAnimationController->cancelCallback(id);
}
void Document::serviceScriptedAnimations(double monotonicAnimationStartTime)
{
if (!m_scriptedAnimationController)
return;
m_scriptedAnimationController->serviceScriptedAnimations(monotonicAnimationStartTime);
}
void Document::clearScriptedAnimationController()
{
// FIXME: consider using ActiveDOMObject.
if (m_scriptedAnimationController)
m_scriptedAnimationController->clearDocumentPointer();
m_scriptedAnimationController.clear();
}
#endif
#if ENABLE(TOUCH_EVENTS)
PassRefPtr<Touch> Document::createTouch(DOMWindow* window, EventTarget* target, int identifier, int pageX, int pageY, int screenX, int screenY, int radiusX, int radiusY, float rotationAngle, float force, ExceptionCode&) const
{
// FIXME: It's not clear from the documentation at
// http://developer.apple.com/library/safari/#documentation/UserExperience/Reference/DocumentAdditionsReference/DocumentAdditions/DocumentAdditions.html
// when this method should throw and nor is it by inspection of iOS behavior. It would be nice to verify any cases where it throws under iOS
// and implement them here. See https://bugs.webkit.org/show_bug.cgi?id=47819
Frame* frame = window ? window->frame() : this->frame();
return Touch::create(frame, target, identifier, screenX, screenY, pageX, pageY, radiusX, radiusY, rotationAngle, force);
}
#endif
static void wheelEventHandlerCountChanged(Document* document)
{
Page* page = document->page();
if (!page)
return;
pageWheelEventHandlerCountChanged(*page);
ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator();
if (!scrollingCoordinator)
return;
FrameView* frameView = document->view();
if (!frameView)
return;
// FIXME: Why doesn't this need to be called in didBecomeCurrentDocumentInFrame?
scrollingCoordinator->frameViewWheelEventHandlerCountChanged(frameView);
}
void Document::didAddWheelEventHandler()
{
++m_wheelEventHandlerCount;
wheelEventHandlerCountChanged(this);
}
void Document::didRemoveWheelEventHandler()
{
ASSERT(m_wheelEventHandlerCount > 0);
--m_wheelEventHandlerCount;
wheelEventHandlerCountChanged(this);
}
void Document::didAddTouchEventHandler(Node* handler)
{
#if ENABLE(TOUCH_EVENTS)
if (!m_touchEventTargets.get())
m_touchEventTargets = adoptPtr(new TouchEventTargetSet);
m_touchEventTargets->add(handler);
if (Document* parent = parentDocument()) {
parent->didAddTouchEventHandler(this);
return;
}
if (Page* page = this->page()) {
if (m_touchEventTargets->size() == 1)
page->chrome().client().needTouchEvents(true);
}
#else
UNUSED_PARAM(handler);
#endif
}
void Document::didRemoveTouchEventHandler(Node* handler)
{
#if ENABLE(TOUCH_EVENTS)
if (!m_touchEventTargets.get())
return;
ASSERT(m_touchEventTargets->contains(handler));
m_touchEventTargets->remove(handler);
if (Document* parent = parentDocument()) {
parent->didRemoveTouchEventHandler(this);
return;
}
Page* page = this->page();
if (!page)
return;
if (m_touchEventTargets->size())
return;
for (const Frame* frame = &page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
if (frame->document() && frame->document()->hasTouchEventHandlers())
return;
}
page->chrome().client().needTouchEvents(false);
#else
UNUSED_PARAM(handler);
#endif
}
#if ENABLE(TOUCH_EVENTS)
void Document::didRemoveEventTargetNode(Node* handler)
{
if (m_touchEventTargets) {
m_touchEventTargets->removeAll(handler);
if ((handler == this || m_touchEventTargets->isEmpty()) && parentDocument())
parentDocument()->didRemoveEventTargetNode(this);
}
}
#endif
void Document::resetLastHandledUserGestureTimestamp()
{
m_lastHandledUserGestureTimestamp = monotonicallyIncreasingTime();
}
HTMLIFrameElement* Document::seamlessParentIFrame() const
{
if (!shouldDisplaySeamlesslyWithParent())
return nullptr;
return toHTMLIFrameElement(ownerElement());
}
bool Document::shouldDisplaySeamlesslyWithParent() const
{
#if ENABLE(IFRAME_SEAMLESS)
if (!RuntimeEnabledFeatures::sharedFeatures().seamlessIFramesEnabled())
return false;
HTMLFrameOwnerElement* ownerElement = this->ownerElement();
if (!ownerElement)
return false;
return m_mayDisplaySeamlesslyWithParent && ownerElement->hasTagName(iframeTag) && ownerElement->fastHasAttribute(seamlessAttr);
#else
return false;
#endif
}
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* doc)
{
if (!doc)
return nullptr;
Element* element = doc->focusedElement();
if (!element && doc->isPluginDocument()) {
PluginDocument* pluginDocument = toPluginDocument(doc);
element = pluginDocument->pluginElement();
}
if (!element && doc->isHTMLDocument())
element = doc->body();
if (!element)
element = doc->documentElement();
return element;
}
void Document::adjustFloatQuadsForScrollAndAbsoluteZoomAndFrameScale(Vector<FloatQuad>& quads, const RenderStyle& style)
{
if (!view())
return;
float zoom = style.effectiveZoom();
float inverseFrameScale = 1;
if (frame())
inverseFrameScale = 1 / frame()->frameScaleFactor();
LayoutRect visibleContentRect = view()->visibleContentRect();
for (size_t i = 0; i < quads.size(); ++i) {
quads[i].move(-visibleContentRect.x(), -visibleContentRect.y());
if (zoom != 1)
quads[i].scale(1 / zoom, 1 / zoom);
if (inverseFrameScale != 1)
quads[i].scale(inverseFrameScale, inverseFrameScale);
}
}
void Document::adjustFloatRectForScrollAndAbsoluteZoomAndFrameScale(FloatRect& rect, const RenderStyle& style)
{
if (!view())
return;
float zoom = style.effectiveZoom();
float inverseFrameScale = 1;
if (frame())
inverseFrameScale = 1 / frame()->frameScaleFactor();
LayoutRect visibleContentRect = view()->visibleContentRect();
rect.move(-visibleContentRect.x(), -visibleContentRect.y());
if (zoom != 1)
rect.scale(1 / zoom);
if (inverseFrameScale != 1)
rect.scale(inverseFrameScale);
}
bool Document::hasActiveParser()
{
return m_activeParserCount || (m_parser && m_parser->processingData());
}
void Document::decrementActiveParserCount()
{
--m_activeParserCount;
if (!frame())
return;
// FIXME: This should always be enabled, 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
#if ENABLE(THREADED_HTML_PARSER)
loader()->checkLoadComplete();
#endif
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, const PlatformMouseEvent* event, StyleResolverUpdateFlag updateFlag)
{
ASSERT(!request.readOnly());
Element* innerElementInDocument = innerElement;
while (innerElementInDocument && &innerElementInDocument->document() != this) {
innerElementInDocument->document().updateHoverActiveState(request, innerElementInDocument, event);
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 (RenderElement* curr = oldActiveElement->renderer(); curr; curr = curr->parent()) {
Element* element = curr->element();
if (!element)
continue;
element->setActive(false);
m_userActionElements.setInActiveChain(element, false);
}
m_activeElement.clear();
} 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 = m_hoveredElement.release();
// 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->parentOrShadowHostElement();
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;
// mouseenter and mouseleave events are only dispatched if there is a capturing eventhandler on an ancestor
// or a normal eventhandler on the element itself (they don't bubble).
// This optimization is necessary since these events can cause O(n²) capturing event-handler checks.
bool hasCapturingMouseEnterListener = false;
bool hasCapturingMouseLeaveListener = false;
if (event && newHoveredElement != oldHoveredElement.get()) {
for (ContainerNode* curr = newHoveredElement; curr; curr = curr->parentOrShadowHostNode()) {
if (curr->hasCapturingEventListeners(eventNames().mouseenterEvent)) {
hasCapturingMouseEnterListener = true;
break;
}
}
for (ContainerNode* curr = oldHoveredElement.get(); curr; curr = curr->parentOrShadowHostNode()) {
if (curr->hasCapturingEventListeners(eventNames().mouseleaveEvent)) {
hasCapturingMouseLeaveListener = true;
break;
}
}
}
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->parentElement()) {
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 (oldHoveredElement && oldHoveredElement->isFrameOwnerElement()) {
if (Document* contentDocument = toHTMLFrameOwnerElement(*oldHoveredElement).contentDocument())
contentDocument->updateHoverActiveState(request, nullptr, event);
}
}
// 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);
}
size_t removeCount = elementsToRemoveFromChain.size();
for (size_t i = 0; i < removeCount; ++i) {
elementsToRemoveFromChain[i]->setHovered(false);
if (event && (hasCapturingMouseLeaveListener || elementsToRemoveFromChain[i]->hasEventListeners(eventNames().mouseleaveEvent)))
elementsToRemoveFromChain[i]->dispatchMouseEvent(*event, eventNames().mouseleaveEvent, 0, newHoveredElement);
}
bool sawCommonAncestor = false;
for (size_t i = 0, size = elementsToAddToChain.size(); i < size; ++i) {
if (allowActiveChanges)
elementsToAddToChain[i]->setActive(true);
if (ancestor && elementsToAddToChain[i] == 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.
elementsToAddToChain[i]->setHovered(true);
if (event && (hasCapturingMouseEnterListener || elementsToAddToChain[i]->hasEventListeners(eventNames().mouseenterEvent)))
elementsToAddToChain[i]->dispatchMouseEvent(*event, eventNames().mouseenterEvent, 0, oldHoveredElement.get());
}
}
ASSERT(updateFlag == RecalcStyleIfNeeded || updateFlag == DeferRecalcStyleIfNeeded);
if (updateFlag == RecalcStyleIfNeeded)
updateStyleIfNeeded();
}
bool Document::haveStylesheetsLoaded() const
{
return !m_styleSheetCollection.hasPendingSheets() || m_ignorePendingStylesheets;
}
Locale& Document::getCachedLocale(const AtomicString& locale)
{
AtomicString localeKey = locale;
if (locale.isEmpty() || !RuntimeEnabledFeatures::sharedFeatures().langAttributeAwareFormControlUIEnabled())
localeKey = defaultLanguage();
LocaleIdentifierToLocaleMap::AddResult result = m_localeCache.add(localeKey, nullptr);
if (result.isNewEntry)
result.iterator->value = Locale::create(localeKey);
return *(result.iterator->value);
}
#if ENABLE(TEMPLATE_ELEMENT)
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->setTemplateDocumentHost(this); // balanced in dtor.
return m_templateDocument.get();
}
#endif
#if ENABLE(FONT_LOAD_EVENTS)
PassRefPtr<FontLoader> Document::fontloader()
{
if (!m_fontloader)
m_fontloader = FontLoader::create(this);
return m_fontloader;
}
#endif
float Document::deviceScaleFactor() const
{
float deviceScaleFactor = 1.0;
if (Page* documentPage = page())
deviceScaleFactor = documentPage->deviceScaleFactor();
return deviceScaleFactor;
}
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);
}
void Document::didAssociateFormControlsTimerFired(Timer<Document>* timer)
{
ASSERT_UNUSED(timer, timer == &m_didAssociateFormControlsTimer);
if (!frame() || !frame()->page())
return;
Vector<RefPtr<Element>> associatedFormControls;
copyToVector(m_associatedFormControls, associatedFormControls);
frame()->page()->chrome().client().didAssociateFormControls(associatedFormControls);
m_associatedFormControls.clear();
}
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 = plugInsJavaScript;
m_frame->mainFrame().script().evaluateInWorld(ScriptSourceCode(jsString), world);
m_hasInjectedPlugInsScript = true;
}
} // namespace WebCore