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chromium / chromium / blink / ca075d76051d48c312027a8f42d0ff6975a95e33 / . / Source / core / dom / Document.cpp
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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2006 Alexey Proskuryakov (ap@webkit.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 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 "core/dom/Document.h"
#include "HTMLElementFactory.h"
#include "HTMLNames.h"
#include "RuntimeEnabledFeatures.h"
#include "SVGElementFactory.h"
#include "SVGNames.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include "bindings/v8/CustomElementConstructorBuilder.h"
#include "bindings/v8/Dictionary.h"
#include "bindings/v8/ScriptController.h"
#include "core/accessibility/AXObjectCache.h"
#include "core/animation/DocumentTimeline.h"
#include "core/css/CSSStyleDeclaration.h"
#include "core/css/CSSStyleSheet.h"
#include "core/css/FontLoader.h"
#include "core/css/MediaQueryMatcher.h"
#include "core/css/StylePropertySet.h"
#include "core/css/StyleSheetContents.h"
#include "core/css/StyleSheetList.h"
#include "core/css/resolver/StyleResolver.h"
#include "core/dom/Attr.h"
#include "core/dom/CDATASection.h"
#include "core/dom/Comment.h"
#include "core/dom/ContextFeatures.h"
#include "core/dom/CustomElementRegistry.h"
#include "core/dom/DOMImplementation.h"
#include "core/dom/DOMNamedFlowCollection.h"
#include "core/dom/DocumentEventQueue.h"
#include "core/dom/DocumentFragment.h"
#include "core/dom/DocumentLifecycleObserver.h"
#include "core/dom/DocumentMarkerController.h"
#include "core/dom/DocumentSharedObjectPool.h"
#include "core/dom/DocumentStyleSheetCollection.h"
#include "core/dom/DocumentType.h"
#include "core/dom/Element.h"
#include "core/dom/Event.h"
#include "core/dom/EventFactory.h"
#include "core/dom/EventListener.h"
#include "core/dom/EventNames.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/ExceptionCodePlaceholder.h"
#include "core/dom/HashChangeEvent.h"
#include "core/dom/NamedFlowCollection.h"
#include "core/dom/NodeFilter.h"
#include "core/dom/NodeIterator.h"
#include "core/dom/NodeRareData.h"
#include "core/dom/NodeRenderingTraversal.h"
#include "core/dom/NodeTraversal.h"
#include "core/dom/NodeWithIndex.h"
#include "core/dom/PageTransitionEvent.h"
#include "core/dom/PopStateEvent.h"
#include "core/dom/ProcessingInstruction.h"
#include "core/dom/QualifiedName.h"
#include "core/dom/RequestAnimationFrameCallback.h"
#include "core/dom/ScopedEventQueue.h"
#include "core/dom/ScriptRunner.h"
#include "core/dom/ScriptedAnimationController.h"
#include "core/dom/SelectorQuery.h"
#include "core/dom/TouchList.h"
#include "core/dom/TransformSource.h"
#include "core/dom/TreeWalker.h"
#include "core/dom/UserActionElementSet.h"
#include "core/dom/VisitedLinkState.h"
#include "core/dom/WebCoreMemoryInstrumentation.h"
#include "core/dom/shadow/ElementShadow.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/editing/Editor.h"
#include "core/editing/FrameSelection.h"
#include "core/html/FormController.h"
#include "core/html/HTMLAllCollection.h"
#include "core/html/HTMLAnchorElement.h"
#include "core/html/HTMLCanvasElement.h"
#include "core/html/HTMLCollection.h"
#include "core/html/HTMLDocument.h"
#include "core/html/HTMLFrameOwnerElement.h"
#include "core/html/HTMLHeadElement.h"
#include "core/html/HTMLIFrameElement.h"
#include "core/html/HTMLImportsController.h"
#include "core/html/HTMLLinkElement.h"
#include "core/html/HTMLNameCollection.h"
#include "core/html/HTMLScriptElement.h"
#include "core/html/HTMLStyleElement.h"
#include "core/html/HTMLTitleElement.h"
#include "core/html/PluginDocument.h"
#include "core/html/parser/HTMLDocumentParser.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/html/parser/NestingLevelIncrementer.h"
#include "core/inspector/InspectorCounters.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "core/inspector/ScriptCallStack.h"
#include "core/loader/CookieJar.h"
#include "core/loader/DocumentLoader.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/ImageLoader.h"
#include "core/loader/Prerenderer.h"
#include "core/loader/TextResourceDecoder.h"
#include "core/loader/cache/CachedResourceLoader.h"
#include "core/page/Chrome.h"
#include "core/page/ChromeClient.h"
#include "core/page/ContentSecurityPolicy.h"
#include "core/page/DOMSecurityPolicy.h"
#include "core/page/DOMWindow.h"
#include "core/page/EventHandler.h"
#include "core/page/Frame.h"
#include "core/page/FrameTree.h"
#include "core/page/FrameView.h"
#include "core/page/History.h"
#include "core/page/MouseEventWithHitTestResults.h"
#include "core/page/Page.h"
#include "core/page/PageConsole.h"
#include "core/page/PointerLockController.h"
#include "core/page/Settings.h"
#include "core/page/ValidationMessageClient.h"
#include "core/page/animation/AnimationController.h"
#include "core/page/scrolling/ScrollingCoordinator.h"
#include "core/platform/DateComponents.h"
#include "core/platform/HistogramSupport.h"
#include "core/platform/Language.h"
#include "core/platform/Timer.h"
#include "core/platform/chromium/TraceEvent.h"
#include "core/platform/network/HTTPParsers.h"
#include "core/platform/text/PlatformLocale.h"
#include "core/platform/text/SegmentedString.h"
#include "core/rendering/HitTestRequest.h"
#include "core/rendering/HitTestResult.h"
#include "core/rendering/RenderArena.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/RenderWidget.h"
#include "core/rendering/TextAutosizer.h"
#include "core/svg/SVGDocumentExtensions.h"
#include "core/svg/SVGStyleElement.h"
#include "core/workers/SharedWorkerRepository.h"
#include "core/xml/XPathEvaluator.h"
#include "core/xml/XPathExpression.h"
#include "core/xml/XPathNSResolver.h"
#include "core/xml/XPathResult.h"
#include "core/xml/XSLTProcessor.h"
#include "core/xml/parser/XMLDocumentParser.h"
#include "weborigin/SchemeRegistry.h"
#include "weborigin/SecurityOrigin.h"
#include "wtf/CurrentTime.h"
#include "wtf/HashFunctions.h"
#include "wtf/MainThread.h"
#include "wtf/MemoryInstrumentationHashCountedSet.h"
#include "wtf/MemoryInstrumentationHashMap.h"
#include "wtf/MemoryInstrumentationHashSet.h"
#include "wtf/MemoryInstrumentationVector.h"
#include "wtf/PassRefPtr.h"
#include "wtf/StdLibExtras.h"
#include "wtf/UnusedParam.h"
#include "wtf/text/StringBuffer.h"
using namespace std;
using namespace WTF;
using namespace Unicode;
namespace WebCore {
using namespace HTMLNames;
// #define INSTRUMENT_LAYOUT_SCHEDULING 1
static const double cDefaultIncrementalRenderingSuppressionTimeoutInSeconds = 5;
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
const uint32_t nameStartMask = Letter_Lowercase | Letter_Uppercase | Letter_Other | Letter_Titlecase | Number_Letter;
if (!(Unicode::category(c) & nameStartMask))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
DecompositionType decompType = decompositionType(c);
if (decompType == DecompositionFont || decompType == DecompositionCompat)
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
const uint32_t otherNamePartMask = Mark_NonSpacing | Mark_Enclosing | Mark_SpacingCombining | Letter_Modifier | Number_DecimalDigit;
if (!(Unicode::category(c) & otherNamePartMask))
return false;
// rule (c) above
if (c >= 0xF900 && c < 0xFFFE)
return false;
// rule (d) above
DecompositionType decompType = decompositionType(c);
if (decompType == DecompositionFont || decompType == DecompositionCompat)
return false;
return true;
}
static bool shouldInheritSecurityOriginFromOwner(const KURL& 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* widgetForNode(Node* focusedNode)
{
if (!focusedNode)
return 0;
RenderObject* renderer = focusedNode->renderer();
if (!renderer || !renderer->isWidget())
return 0;
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 KURL& 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;
// This class should be passed only to Document::postTask.
class CheckFocusedNodeTask FINAL : public ScriptExecutionContext::Task {
public:
static PassOwnPtr<CheckFocusedNodeTask> create()
{
return adoptPtr(new CheckFocusedNodeTask());
}
virtual ~CheckFocusedNodeTask() { }
private:
CheckFocusedNodeTask() { }
virtual void performTask(ScriptExecutionContext* context) OVERRIDE
{
ASSERT(context->isDocument());
Document* document = toDocument(context);
document->didRunCheckFocusedNodeTask();
if (!document->focusedNode())
return;
if (document->childNeedsStyleRecalc())
return;
if (document->focusedNode()->renderer() && document->focusedNode()->renderer()->needsLayout())
return;
if (!document->focusedNode()->isFocusable())
document->setFocusedNode(0);
}
};
Document::Document(Frame* frame, const KURL& url, DocumentClassFlags documentClasses)
: ContainerNode(0, CreateDocument)
, TreeScope(this)
, m_styleResolverThrowawayTimer(this, &Document::styleResolverThrowawayTimerFired)
, m_lastStyleResolverAccessTime(0)
, m_didCalculateStyleResolver(false)
, m_ignorePendingStylesheets(false)
, m_needsNotifyRemoveAllPendingStylesheet(false)
, m_hasNodesWithPlaceholderStyle(false)
, m_pendingSheetLayout(NoLayoutWithPendingSheets)
, m_frame(frame)
, m_domWindow(0)
, m_activeParserCount(0)
, m_contextFeatures(ContextFeatures::defaultSwitch())
, m_wellFormed(false)
, m_printing(false)
, m_paginatedForScreen(false)
, m_ignoreAutofocus(false)
, m_compatibilityMode(NoQuirksMode)
, m_compatibilityModeLocked(false)
, m_textColor(Color::black)
, m_didPostCheckFocusedNodeTask(false)
, m_domTreeVersion(++s_globalTreeVersion)
, m_listenerTypes(0)
, m_mutationObserverTypes(0)
, m_styleSheetCollection(DocumentStyleSheetCollection::create(this))
, m_visitedLinkState(VisitedLinkState::create(this))
, m_visuallyOrdered(false)
, m_readyState(Complete)
, m_bParsing(false)
, m_styleRecalcTimer(this, &Document::styleRecalcTimerFired)
, m_inStyleRecalc(false)
, m_closeAfterStyleRecalc(false)
, m_gotoAnchorNeededAfterStylesheetsLoad(false)
, m_pendingStyleRecalcShouldForce(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_cssTarget(0)
, m_processingLoadEvent(false)
, m_loadEventFinished(false)
, m_startTime(currentTime())
, m_overMinimumLayoutThreshold(false)
, m_scriptRunner(ScriptRunner::create(this))
, m_xmlVersion("1.0")
, m_xmlStandalone(StandaloneUnspecified)
, m_hasXMLDeclaration(0)
, m_designMode(inherit)
, m_hasAnnotatedRegions(false)
, m_annotatedRegionsDirty(false)
, m_accessKeyMapValid(false)
, m_useSecureKeyboardEntryWhenActive(false)
, m_documentClasses(documentClasses)
, m_isViewSource(false)
, m_sawElementsInKnownNamespaces(false)
, m_isSrcdocDocument(false)
, m_renderer(0)
, m_eventQueue(DocumentEventQueue::create(this))
, m_weakFactory(this)
, m_idAttributeName(idAttr)
, m_hasFullscreenController(false)
, 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_prerenderer(Prerenderer::create(this))
, m_textAutosizer(TextAutosizer::create(this))
, m_pendingTasksTimer(this, &Document::pendingTasksTimerFired)
, m_scheduledTasksAreSuspended(false)
, m_sharedObjectPoolClearTimer(this, &Document::sharedObjectPoolClearTimerFired)
#ifndef NDEBUG
, m_didDispatchViewportPropertiesChanged(false)
#endif
, m_timeline(DocumentTimeline::create(this))
, m_templateDocumentHost(0)
, m_fontloader(0)
, m_didAssociateFormControlsTimer(this, &Document::didAssociateFormControlsTimerFired)
{
ScriptWrappable::init(this);
if (m_frame) {
provideContextFeaturesToDocumentFrom(this, m_frame->page());
m_cachedResourceLoader = m_frame->loader()->activeDocumentLoader()->cachedResourceLoader();
}
if (!m_cachedResourceLoader)
m_cachedResourceLoader = CachedResourceLoader::create(0);
m_cachedResourceLoader->setDocument(this);
// We depend on the url getting immediately set in subframes, but we
// also depend on the url NOT getting immediately set in opened windows.
// See fast/dom/early-frame-url.html
// and fast/dom/location-new-window-no-crash.html, respectively.
// FIXME: Can/should we unify this behavior?
if ((m_frame && m_frame->ownerElement()) || !url.isEmpty())
setURL(url);
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);
}
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;
}
Document::~Document()
{
ASSERT(!renderer());
ASSERT(m_ranges.isEmpty());
ASSERT(!m_styleRecalcTimer.isActive());
ASSERT(!m_parentTreeScope);
ASSERT(!hasGuardRefCount());
if (m_templateDocument)
m_templateDocument->setTemplateDocumentHost(0); // balanced in templateDocument().
if (Document* ownerDocument = this->ownerDocument())
ownerDocument->didRemoveEventTargetNode(this);
m_scriptRunner.clear();
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.clear();
if (this == topDocument())
clearAXObjectCache();
m_decoder = 0;
if (m_styleSheetList)
m_styleSheetList->detachFromDocument();
m_styleSheetCollection.clear();
if (m_elemSheet)
m_elemSheet->clearOwnerNode();
clearStyleResolver(); // We need to destory 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(0);
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::dispose()
{
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_docType = 0;
m_focusedNode = 0;
m_hoverNode = 0;
m_activeElement = 0;
m_titleElement = 0;
m_documentElement = 0;
m_contextFeatures = ContextFeatures::defaultSwitch();
m_userActionElements.documentDidRemoveLastRef();
detachParser();
m_registry.clear();
m_imports.clear();
// removeDetachedChildren() doesn't always unregister IDs,
// so tear down scope information upfront to avoid having stale references in the map.
destroyTreeScopeData();
removeDetachedChildren();
// removeDetachedChildren() can access FormController.
m_formController.clear();
m_markers->detach();
m_cssCanvasElements.clear();
// FIXME: consider using ActiveDOMObject.
if (m_scriptedAnimationController)
m_scriptedAnimationController->clearDocumentPointer();
m_scriptedAnimationController.clear();
lifecycleNotifier()->notifyDocumentWasDisposed();
}
Element* Document::getElementById(const AtomicString& id) const
{
return TreeScope::getElementById(id);
}
Element* Document::getElementByAccessKey(const String& key)
{
if (key.isEmpty())
return 0;
if (!m_accessKeyMapValid) {
buildAccessKeyMap(this);
m_accessKeyMapValid = true;
}
return m_elementsByAccessKey.get(key.impl());
}
void Document::buildAccessKeyMap(TreeScope* scope)
{
ASSERT(scope);
Node* rootNode = scope->rootNode();
for (Element* element = ElementTraversal::firstWithin(rootNode); element; element = ElementTraversal::next(element, rootNode)) {
const AtomicString& accessKey = element->getAttribute(accesskeyAttr);
if (!accessKey.isEmpty())
m_elementsByAccessKey.set(accessKey.impl(), element);
for (ShadowRoot* root = element->youngestShadowRoot(); root; root = root->olderShadowRoot())
buildAccessKeyMap(root);
}
}
void Document::invalidateAccessKeyMap()
{
m_accessKeyMapValid = false;
m_elementsByAccessKey.clear();
}
SelectorQueryCache* Document::selectorQueryCache()
{
if (!m_selectorQueryCache)
m_selectorQueryCache = adoptPtr(new SelectorQueryCache());
return m_selectorQueryCache.get();
}
MediaQueryMatcher* Document::mediaQueryMatcher()
{
if (!m_mediaQueryMatcher)
m_mediaQueryMatcher = MediaQueryMatcher::create(this);
return m_mediaQueryMatcher.get();
}
void Document::setCompatibilityMode(CompatibilityMode mode)
{
if (m_compatibilityModeLocked || mode == m_compatibilityMode)
return;
bool wasInQuirksMode = inQuirksMode();
m_compatibilityMode = mode;
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");
}
void Document::setDocType(PassRefPtr<DocumentType> docType)
{
// This should never be called more than once.
ASSERT(!m_docType || !docType);
m_docType = docType;
if (m_docType) {
this->adoptIfNeeded(m_docType.get());
if (m_docType->publicId().startsWith("-//wapforum//dtd xhtml mobile 1.", /* caseSensitive */ false))
processViewport("width=device-width, height=device-height", ViewportArguments::XHTMLMobileProfile);
}
// Doctype affects the interpretation of the stylesheets.
clearStyleResolver();
}
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);
}
void Document::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
Element* newDocumentElement = ElementTraversal::firstWithin(this);
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 0;
}
if (isXHTMLDocument() || isHTMLDocument())
return HTMLElementFactory::createHTMLElement(QualifiedName(nullAtom, isHTMLDocument() ? name.lower() : name, xhtmlNamespaceURI), this, 0, false);
return createElement(QualifiedName(nullAtom, name, nullAtom), false);
}
PassRefPtr<Element> Document::createElement(const AtomicString& localName, const AtomicString& typeExtension, ExceptionCode& ec)
{
if (!isValidName(localName)) {
ec = INVALID_CHARACTER_ERR;
return 0;
}
RefPtr<Element> element;
if (CustomElementRegistry::isCustomTagName(localName))
element = ensureCustomElementRegistry()->createCustomTagElement(QualifiedName(nullAtom, localName, xhtmlNamespaceURI));
else
element = createElement(localName, ec);
if (!typeExtension.isNull()) {
setTypeExtension(element.get(), typeExtension);
ensureCustomElementRegistry()->didGiveTypeExtension(element.get(), typeExtension);
}
return element;
}
PassRefPtr<Element> Document::createElementNS(const AtomicString& namespaceURI, const String& qualifiedName, const AtomicString& typeExtension, ExceptionCode& ec)
{
String prefix, localName;
if (!parseQualifiedName(qualifiedName, prefix, localName, ec))
return 0;
QualifiedName qName(prefix, localName, namespaceURI);
if (!hasValidNamespaceForElements(qName)) {
ec = NAMESPACE_ERR;
return 0;
}
RefPtr<Element> element;
if (CustomElementRegistry::isCustomTagName(qName.localName()))
element = ensureCustomElementRegistry()->createCustomTagElement(qName);
else
element = createElementNS(namespaceURI, qualifiedName, ec);
if (!typeExtension.isNull()) {
setTypeExtension(element.get(), typeExtension);
ensureCustomElementRegistry()->didGiveTypeExtension(element.get(), typeExtension);
}
return element;
}
ScriptValue Document::registerElement(WebCore::ScriptState* state, const AtomicString& name, ExceptionCode& ec)
{
return registerElement(state, name, Dictionary(), ec);
}
ScriptValue Document::registerElement(WebCore::ScriptState* state, const AtomicString& name, const Dictionary& options, ExceptionCode& ec)
{
if (!isHTMLDocument() && !isXHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return ScriptValue();
}
CustomElementConstructorBuilder constructorBuilder(state, &options);
ensureCustomElementRegistry()->registerElement(&constructorBuilder, name, ec);
return constructorBuilder.bindingsReturnValue();
}
CustomElementRegistry* Document::ensureCustomElementRegistry()
{
if (!m_registry) {
ASSERT(isHTMLDocument() || isXHTMLDocument());
m_registry = adoptRef(new CustomElementRegistry(this));
}
return m_registry.get();
}
void Document::setImports(PassRefPtr<HTMLImportsController> imports)
{
ASSERT(!m_imports);
m_imports = imports;
}
void Document::didLoadAllImports()
{
executeScriptsWaitingForResourcesIfNeeded();
}
bool Document::haveImportsLoaded() const
{
return !m_imports || m_imports->haveLoaded();
}
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 0;
}
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 0;
}
if (isHTMLDocument()) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return ProcessingInstruction::create(this, target, data);
}
PassRefPtr<Text> Document::createEditingTextNode(const String& text)
{
return Text::createEditingText(this, text);
}
PassRefPtr<CSSStyleDeclaration> Document::createCSSStyleDeclaration()
{
return MutableStylePropertySet::create()->ensureCSSStyleDeclaration();
}
PassRefPtr<Node> Document::importNode(Node* importedNode, bool deep, ExceptionCode& ec)
{
ec = 0;
if (!importedNode) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
switch (importedNode->nodeType()) {
case TEXT_NODE:
return createTextNode(importedNode->nodeValue());
case CDATA_SECTION_NODE:
return createCDATASection(importedNode->nodeValue(), 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 0;
}
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 0;
newElement->appendChild(newChild.release(), ec);
if (ec)
return 0;
}
}
return newElement.release();
}
case ATTRIBUTE_NODE:
return Attr::create(this, QualifiedName(nullAtom, static_cast<Attr*>(importedNode)->name(), nullAtom), static_cast<Attr*>(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 = static_cast<DocumentFragment*>(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 0;
newFragment->appendChild(newChild.release(), ec);
if (ec)
return 0;
}
}
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 0;
}
PassRefPtr<Node> Document::adoptNode(PassRefPtr<Node> source, ExceptionCode& ec)
{
if (!source) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
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 0;
case ATTRIBUTE_NODE: {
Attr* attr = static_cast<Attr*>(source.get());
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 0;
}
if (source->isFrameOwnerElement()) {
HTMLFrameOwnerElement* frameOwnerElement = toFrameOwnerElement(source.get());
if (frame() && frame()->tree()->isDescendantOf(frameOwnerElement->contentFrame())) {
ec = HIERARCHY_REQUEST_ERR;
return 0;
}
}
if (source->parentNode()) {
source->parentNode()->removeChild(source.get(), ec);
if (ec)
return 0;
}
}
this->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& qName, bool createdByParser)
{
RefPtr<Element> e;
// FIXME: Use registered namespaces and look up in a hash to find the right factory.
if (qName.namespaceURI() == xhtmlNamespaceURI)
e = HTMLElementFactory::createHTMLElement(qName, this, 0, createdByParser);
else if (qName.namespaceURI() == SVGNames::svgNamespaceURI)
e = SVGElementFactory::createSVGElement(qName, this, createdByParser);
if (e)
m_sawElementsInKnownNamespaces = true;
else
e = Element::create(qName, document());
// <image> uses imgTag so we need a special rule.
ASSERT((qName.matches(imageTag) && e->tagQName().matches(imgTag) && e->tagQName().prefix() == qName.prefix()) || qName == e->tagQName());
return e.release();
}
bool Document::regionBasedColumnsEnabled() const
{
return settings() && settings()->regionBasedColumnsEnabled();
}
bool Document::cssStickyPositionEnabled() const
{
return settings() && settings()->cssStickyPositionEnabled();
}
bool Document::cssCompositingEnabled() const
{
return RuntimeEnabledFeatures::cssCompositingEnabled();
}
PassRefPtr<DOMNamedFlowCollection> Document::webkitGetNamedFlows()
{
if (!RuntimeEnabledFeatures::cssRegionsEnabled() || !renderer())
return 0;
updateStyleIfNeeded();
return namedFlows()->createCSSOMSnapshot();
}
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 0;
QualifiedName qName(prefix, localName, namespaceURI);
if (!hasValidNamespaceForElements(qName)) {
ec = NAMESPACE_ERR;
return 0;
}
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;
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;
}
m_readyState = readyState;
dispatchEvent(Event::create(eventNames().readystatechangeEvent, false, false));
}
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;
}
KURL 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 "application/xhtml+xml";
if (isSVGDocument())
return "image/svg+xml";
if (xmlStandalone())
return "text/xml";
if (isHTMLDocument())
return "text/html";
if (DocumentLoader* documentLoader = loader())
return documentLoader->responseMIMEType();
return String();
}
Element* Document::elementFromPoint(int x, int y) const
{
if (!renderer())
return 0;
return TreeScope::elementFromPoint(x, y);
}
PassRefPtr<Range> Document::caretRangeFromPoint(int x, int y)
{
if (!renderer())
return 0;
LayoutPoint localPoint;
Node* node = nodeFromPoint(this, x, y, &localPoint);
if (!node)
return 0;
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 0;
VisiblePosition visiblePosition = renderer->positionForPoint(localPoint);
if (visiblePosition.isNull())
return 0;
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 || (WTF::Unicode::category(c) & (WTF::Unicode::Separator_Line | WTF::Unicode::Separator_Paragraph))) {
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 (Frame* f = frame())
f->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 = 0;
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(m_titleElement->hasTagName(titleTag));
if (m_titleElement->hasTagName(titleTag))
static_cast<HTMLTitleElement*>(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 = 0;
m_titleSetExplicitly = false;
// Update title based on first title element in the head, if one exists.
if (HTMLElement* headElement = head()) {
for (Node* e = headElement->firstChild(); e; e = e->nextSibling())
if (e->hasTagName(titleTag)) {
HTMLTitleElement* titleElement = static_cast<HTMLTitleElement*>(e);
setTitleElement(titleElement->textWithDirection(), titleElement);
break;
}
}
if (!m_titleElement)
updateTitle(StringWithDirection());
}
PageVisibilityState Document::visibilityState() const
{
// The visibility of the document is inherited from the visibility of the
// page. If there is no page associated with the document, we will assume
// that the page is hidden, as specified by the spec:
// http://dvcs.w3.org/hg/webperf/raw-file/tip/specs/PageVisibility/Overview.html#dom-document-hidden
if (!m_frame || !m_frame->page())
return PageVisibilityStateHidden;
return m_frame->page()->visibilityState();
}
String Document::webkitVisibilityState() const
{
return pageVisibilityStateString(visibilityState());
}
bool Document::webkitHidden() const
{
return visibilityState() != PageVisibilityStateVisible;
}
void Document::dispatchVisibilityStateChangeEvent()
{
dispatchEvent(Event::create(eventNames().webkitvisibilitychangeEvent, false, false));
}
DOMSecurityPolicy* Document::securityPolicy()
{
if (!m_domSecurityPolicy)
m_domSecurityPolicy = DOMSecurityPolicy::create(this);
return m_domSecurityPolicy.get();
}
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.get();
}
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() : 0;
}
Page* Document::page() const
{
return m_frame ? m_frame->page() : 0;
}
Settings* Document::settings() const
{
return m_frame ? m_frame->settings() : 0;
}
PassRefPtr<Range> Document::createRange()
{
return Range::create(this);
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, ExceptionCode& ec)
{
// FIXME: Probably this should be handled within the bindings layer and TypeError should be thrown.
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return NodeIterator::create(root, NodeFilter::SHOW_ALL, PassRefPtr<NodeFilter>());
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
// FIXME: It might be a good idea to emit a warning if |whatToShow| contains a bit that is not defined in
// NodeFilter.
return NodeIterator::create(root, whatToShow, PassRefPtr<NodeFilter>());
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter> filter, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
// FIXME: Ditto.
return NodeIterator::create(root, whatToShow, filter);
}
PassRefPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter> filter, bool expandEntityReferences, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
// FIXME: Warn if |expandEntityReferences| is specified. This optional argument is deprecated in DOM4.
UNUSED_PARAM(expandEntityReferences);
return NodeIterator::create(root, whatToShow, filter);
}
PassRefPtr<TreeWalker> Document::createTreeWalker(Node* root, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return TreeWalker::create(root, NodeFilter::SHOW_ALL, PassRefPtr<NodeFilter>());
}
PassRefPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return TreeWalker::create(root, whatToShow, PassRefPtr<NodeFilter>());
}
PassRefPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter> filter, ExceptionCode& ec)
{
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return TreeWalker::create(root, whatToShow, filter);
}
PassRefPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, PassRefPtr<NodeFilter> filter, bool expandEntityReferences, ExceptionCode& ec)
{
UNUSED_PARAM(expandEntityReferences);
if (!root) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
return TreeWalker::create(root, whatToShow, filter);
}
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())
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();
}
bool Document::childNeedsAndNotInStyleRecalc()
{
return childNeedsStyleRecalc() && !m_inStyleRecalc;
}
void Document::recalcStyle(StyleChange change)
{
// we should not enter style recalc while painting
ASSERT(!view() || !view()->isPainting());
if (view() && view()->isPainting())
return;
if (m_inStyleRecalc)
return; // Guard against re-entrancy. -dwh
TRACE_EVENT0("webkit", "Document::recalcStyle");
TraceEvent::SamplingState0Scope("WebKit\0WebKitRecalcStyle");
// 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.
if (m_styleSheetCollection->needsUpdateActiveStylesheetsOnStyleRecalc())
m_styleSheetCollection->updateActiveStyleSheets(FullStyleUpdate);
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willRecalculateStyle(this);
if (m_elemSheet && m_elemSheet->contents()->usesRemUnits())
m_styleSheetCollection->setUsesRemUnit(true);
m_inStyleRecalc = true;
{
PostAttachCallbackDisabler disabler(this);
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
RefPtr<FrameView> frameView = view();
if (frameView) {
frameView->pauseScheduledEvents();
frameView->beginDeferredRepaints();
}
ASSERT(!renderer() || renderArena());
if (!renderer() || !renderArena())
goto bailOut;
if (m_pendingStyleRecalcShouldForce)
change = Force;
// Recalculating the root style (on the document) is not needed in the common case.
if ((change == Force) || (shouldDisplaySeamlesslyWithParent() && (change >= Inherit))) {
// style selector may set this again during recalc
m_hasNodesWithPlaceholderStyle = false;
RefPtr<RenderStyle> documentStyle = StyleResolver::styleForDocument(this, m_styleResolver ? m_styleResolver->fontSelector() : 0);
StyleChange ch = Node::diff(documentStyle.get(), renderer()->style(), this);
if (ch != NoChange)
renderer()->setStyle(documentStyle.release());
}
for (Node* n = firstChild(); n; n = n->nextSibling()) {
if (!n->isElementNode())
continue;
Element* element = toElement(n);
if (shouldRecalcStyle(change, element))
element->recalcStyle(change);
}
if (view())
view()->updateCompositingLayersAfterStyleChange();
bailOut:
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();
if (frameView) {
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 (hoverNode() && !hoverNode()->renderer() && frame())
frame()->eventHandler()->dispatchFakeMouseMoveEventSoon();
}
void Document::updateStyleIfNeeded()
{
ASSERT(isMainThread());
ASSERT(!view() || (!view()->isInLayout() && !view()->isPainting()));
if (!m_pendingStyleRecalcShouldForce && !childNeedsStyleRecalc())
return;
AnimationUpdateBlock animationUpdateBlock(m_frame ? m_frame->animation() : 0);
recalcStyle(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 && renderer() && (frameView->layoutPending() || renderer()->needsLayout()))
frameView->layout();
// FIXME: Using a Task doesn't look a good idea.
if (m_focusedNode && !m_didPostCheckFocusedNodeTask) {
postTask(CheckFocusedNodeTask::create());
m_didPostCheckFocusedNodeTask = true;
}
}
// 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(Force);
}
updateLayout();
m_ignorePendingStylesheets = oldIgnore;
}
PassRefPtr<RenderStyle> Document::styleForElementIgnoringPendingStylesheets(Element* element)
{
ASSERT_ARG(element, element->document() == this);
bool oldIgnore = m_ignorePendingStylesheets;
m_ignorePendingStylesheets = true;
RefPtr<RenderStyle> style = styleResolver()->styleForElement(element, element->parentNode() ? element->parentNode()->computedStyle() : 0);
m_ignorePendingStylesheets = oldIgnore;
return style.release();
}
PassRefPtr<RenderStyle> Document::styleForPage(int pageIndex)
{
RefPtr<RenderStyle> style = styleResolver()->styleForPage(pageIndex);
return style.release();
}
bool Document::isPageBoxVisible(int pageIndex)
{
RefPtr<RenderStyle> style = styleForPage(pageIndex);
return style->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 = 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());
didUpdateSecurityOrigin();
}
void Document::createStyleResolver()
{
bool matchAuthorAndUserStyles = true;
if (Settings* docSettings = settings())
matchAuthorAndUserStyles = docSettings->authorAndUserStylesEnabled();
m_styleResolver = adoptPtr(new StyleResolver(this, matchAuthorAndUserStyles));
m_styleSheetCollection->combineCSSFeatureFlags();
}
void Document::clearStyleResolver()
{
m_styleResolver.clear();
}
void Document::attach(const AttachContext& context)
{
ASSERT(!attached());
ASSERT(!m_axObjectCache || this != topDocument());
if (!m_renderArena)
m_renderArena = RenderArena::create();
// Create the rendering tree
setRenderer(new (m_renderArena.get()) RenderView(this));
renderView()->setIsInWindow(true);
recalcStyle(Force);
ContainerNode::attach(context);
}
void Document::detach(const AttachContext& context)
{
ASSERT(attached());
if (page()) {
page()->pointerLockController()->documentDetached(this);
if (ValidationMessageClient* client = page()->validationMessageClient())
client->documentDetached(*this);
}
if (this == topDocument())
clearAXObjectCache();
stopActiveDOMObjects();
m_eventQueue->close();
// FIXME: consider using ActiveDOMObject.
if (m_scriptedAnimationController)
m_scriptedAnimationController->clearDocumentPointer();
m_scriptedAnimationController.clear();
RenderObject* render = renderer();
documentWillBecomeInactive();
SharedWorkerRepository::documentDetached(this);
if (m_frame) {
FrameView* view = m_frame->view();
if (view)
view->detachCustomScrollbars();
}
// indicate destruction mode, i.e. attached() but renderer == 0
setRenderer(0);
m_hoverNode = 0;
m_focusedNode = 0;
m_activeElement = 0;
ContainerNode::detach(context);
unscheduleStyleRecalc();
if (render)
render->destroy();
if (m_touchEventTargets && m_touchEventTargets->size() && parentDocument())
parentDocument()->didRemoveEventTargetNode(this);
// This is required, as our Frame might delete itself as soon as it detaches
// us. However, this violates Node::detach() semantics, as it's never
// possible to re-attach. Eventually Document::detach() should be renamed,
// or this setting of the frame to 0 could be made explicit in each of the
// callers of Document::detach().
m_frame = 0;
m_renderArena.clear();
if (m_mediaQueryMatcher)
m_mediaQueryMatcher->documentDestroyed();
lifecycleNotifier()->notifyDocumentWasDetached();
}
void Document::prepareForDestruction()
{
disconnectDescendantFrames();
if (DOMWindow* window = this->domWindow())
window->willDetachDocumentFromFrame();
detach();
}
void Document::removeAllEventListeners()
{
EventTarget::removeAllEventListeners();
if (DOMWindow* domWindow = this->domWindow())
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()
{
ScriptExecutionContext::resumeActiveDOMObjects();
}
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 0;
// If the renderer is gone then we are in the process of destruction.
// This method will be called before m_frame = 0.
if (!topDocument()->renderer())
return 0;
return topDocument()->m_axObjectCache.get();
}
AXObjectCache* Document::axObjectCache() const
{
if (!AXObjectCache::accessibilityEnabled())
return 0;
// 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->renderer())
return 0;
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;
// FIXME: How is possible to not have a renderer here?
if (renderer())
renderer()->style()->setRTLOrdering(VisualOrder);
scheduleForcedStyleRecalc();
}
PassRefPtr<DocumentParser> Document::createParser()
{
if (isHTMLDocument() || (RuntimeEnabledFeatures::parseSVGAsHTMLEnabled() && isSVGDocument())) {
bool reportErrors = InspectorInstrumentation::collectingHTMLParseErrors(this->page());
return HTMLDocumentParser::create(this, reportErrors);
}
// FIXME: this should probably pass the frame instead
return XMLDocumentParser::create(this, view());
}
bool Document::isFrameSet() const
{
if (!isHTMLDocument())
return false;
HTMLElement* bodyElement = body();
return bodyElement && bodyElement->hasTagName(framesetTag);
}
ScriptableDocumentParser* Document::scriptableDocumentParser() const
{
return parser() ? parser()->asScriptableDocumentParser() : 0;
}
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();
ASSERT(!m_focusedNode);
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
{
Node* de = documentElement();
if (!de)
return 0;
// try to prefer a FRAMESET element over BODY
Node* body = 0;
for (Node* i = de->firstChild(); i; i = i->nextSibling()) {
if (i->hasTagName(framesetTag))
return toHTMLElement(i);
if (i->hasTagName(bodyTag) && !body)
body = i;
}
return toHTMLElement(body);
}
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() && 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()
{
Node* de = documentElement();
if (!de)
return 0;
for (Node* e = de->firstChild(); e; e = e->nextSibling())
if (e->hasTagName(headTag))
return static_cast<HTMLHeadElement*>(e);
return 0;
}
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;
// The call to dispatchWindowLoadEvent can detach the DOMWindow and cause it (and its
// attached Document) to be destroyed.
RefPtr<DOMWindow> protect(this->domWindow());
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();
Frame* f = frame();
if (f)
f->animation()->resumeAnimationsForDocument(this);
ImageLoader::dispatchPendingBeforeLoadEvents();
ImageLoader::dispatchPendingLoadEvents();
ImageLoader::dispatchPendingErrorEvents();
HTMLLinkElement::dispatchPendingLoadEvents();
HTMLStyleElement::dispatchPendingLoadEvents();
// To align the HTML load event and the SVGLoad event for the outermost <svg> element, fire it from
// here, instead of doing it from SVGElement::finishedParsingChildren (if externalResourcesRequired="false",
// which is the default, for ='true' its fired at a later time, once all external resources finished loading).
if (svgExtensions())
accessSVGExtensions()->dispatchSVGLoadEventToOutermostSVGElements();
dispatchWindowLoadEvent();
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();
RenderObject* renderObject = renderer();
// 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() && renderObject && (!renderObject->firstChild() || renderObject->needsLayout()))
view()->layout();
}
m_processingLoadEvent = false;
if (f && renderObject && 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.
if (AXObjectCache* cache = axObjectCache()) {
cache->getOrCreate(renderObject);
if (this == topDocument()) {
cache->postNotification(renderObject, AXObjectCache::AXLoadComplete, true);
} 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.
cache->postNotification(renderObject, AXObjectCache::AXLayoutComplete, true);
}
}
}
if (svgExtensions())
accessSVGExtensions()->startAnimations();
}
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 max(0, cLayoutScheduleThreshold - elapsed);
}
int Document::elapsedTime() const
{
return static_cast<int>((currentTime() - m_startTime) * 1000);
}
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);
}
const KURL& Document::virtualURL() const
{
return m_url;
}
KURL Document::virtualCompleteURL(const String& url) const
{
return completeURL(url);
}
double Document::timerAlignmentInterval() const
{
Page* p = page();
if (!p)
return ScriptExecutionContext::timerAlignmentInterval();
return p->timerAlignmentInterval();
}
EventTarget* Document::errorEventTarget()
{
return domWindow();
}
void Document::logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, PassRefPtr<ScriptCallStack> callStack)
{
addMessage(JSMessageSource, ErrorMessageLevel, errorMessage, sourceURL, lineNumber, callStack);
}
void Document::setURL(const KURL& url)
{
const KURL& newURL = url.isEmpty() ? blankURL() : url;
if (newURL == m_url)
return;
m_url = newURL;
m_documentURI = m_url.string();
updateBaseURL();
contextFeatures()->urlDidChange(this);
}
void Document::updateBaseURL()
{
KURL 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.
// FIXME: Now that we don't support Objective-C this can probably be removed.
m_baseURL = KURL(ParsedURLString, documentURI());
}
selectorQueryCache()->invalidate();
if (!m_baseURL.isValid())
m_baseURL = KURL();
if (m_elemSheet) {
// Element sheet is silly. It never contains anything.
ASSERT(!m_elemSheet->contents()->ruleCount());
bool usesRemUnits = m_elemSheet->contents()->usesRemUnits();
m_elemSheet = CSSStyleSheet::createInline(this, m_baseURL);
// FIXME: So we are not really the parser. The right fix is to eliminate the element sheet completely.
m_elemSheet->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.
for (Element* element = ElementTraversal::firstWithin(this); element; element = ElementTraversal::next(element)) {
if (element->hasTagName(aTag))
static_cast<HTMLAnchorElement*>(element)->invalidateCachedVisitedLinkHash();
}
}
}
void Document::setBaseURLOverride(const KURL& 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 = 0;
const AtomicString* target = 0;
for (Element* element = ElementTraversal::firstWithin(this); element && (!href || !target); element = ElementTraversal::next(element)) {
if (element->hasTagName(baseTag)) {
if (!href) {
const AtomicString& value = element->fastGetAttribute(hrefAttr);
if (!value.isNull())
href = &value;
}
if (!target) {
const AtomicString& value = element->fastGetAttribute(targetAttr);
if (!value.isNull())
target = &value;
}
if (contentSecurityPolicy()->isActive())
UseCounter::count(this, UseCounter::ContentSecurityPolicyWithBaseElement);
}
}
// FIXME: Since this doesn't share code with completeURL it may not handle encodings correctly.
KURL baseElementURL;
if (href) {
String strippedHref = stripLeadingAndTrailingHTMLSpaces(*href);
if (!strippedHref.isEmpty())
baseElementURL = KURL(url(), strippedHref);
}
if (m_baseElementURL != baseElementURL && contentSecurityPolicy()->allowBaseURI(baseElementURL)) {
m_baseElementURL = baseElementURL;
updateBaseURL();
}
m_baseTarget = target ? *target : nullAtom;
}
String Document::userAgent(const KURL& 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;
Frame* ancestorFrame = currentFrame->tree()->parent();
while (ancestorFrame) {
if (!ancestorFrame->document()->securityOrigin()->canAccess(securityOrigin()))
return currentFrame;
currentFrame = ancestorFrame;
ancestorFrame = ancestorFrame->tree()->parent();
}
return 0;
}
void Document::seamlessParentUpdatedStylesheets()
{
styleResolverChanged(RecalcStyleImmediately);
}
void Document::didRemoveAllPendingStylesheet()
{
m_needsNotifyRemoveAllPendingStylesheet = false;
styleResolverChanged(RecalcStyleImmediately, AnalyzedStyleUpdate);
executeScriptsWaitingForResourcesIfNeeded();
if (m_gotoAnchorNeededAfterStylesheetsLoad && view())
view()->scrollToFragment(m_url);
}
void Document::executeScriptsWaitingForResourcesIfNeeded()
{
if (!haveStylesheetsAndImportsLoaded())
return;
if (ScriptableDocumentParser* parser = scriptableDocumentParser())
parser->executeScriptsWaitingForResources();
}
CSSStyleSheet* Document::elementSheet()
{
if (!m_elemSheet)
m_elemSheet = CSSStyleSheet::createInline(this, m_baseURL);
return m_elemSheet.get();
}
int Document::nodeAbsIndex(Node *node)
{
ASSERT(node->document() == this);
int absIndex = 0;
for (Node* n = node; n && n != this; n = NodeTraversal::previous(n))
absIndex++;
return absIndex;
}
Node* Document::nodeWithAbsIndex(int absIndex)
{
Node* n = this;
for (int i = 0; n && (i < absIndex); i++)
n = NodeTraversal::next(n);
return n;
}
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 = loader()->mainResourceIdentifier();
if (frameLoader->shouldInterruptLoadForXFrameOptions(content, url(), requestIdentifier)) {
String message = "Refused to display '" + url().elidedString() + "' 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() && page()->mainFrame() == frame()) {
#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)
{
ASSERT(!renderer() || renderer()->isRenderView());
// RenderView::hitTest causes a layout, and we don't want to hit that until the first
// layout because until then, there is nothing shown on the screen - the user can't
// have intentionally clicked on something belonging to this page. Furthermore,
// mousemove events before the first layout should not lead to a premature layout()
// happening, which could show a flash of white.
// See also the similar code in EventHandler::hitTestResultAtPoint.
if (!renderer() || !view() || !view()->didFirstLayout())
return MouseEventWithHitTestResults(event, HitTestResult(LayoutPoint()));
HitTestResult result(documentPoint);
renderView()->hitTest(request, result);
if (!request.readOnly())
updateHoverActiveState(request, result.innerElement());
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 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 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 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"
// so we do not support it...
return 0;
}
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::styleResolverChanged(StyleResolverUpdateType updateType, StyleResolverUpdateMode updateMode)
{
// 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
bool needsRecalc = m_styleSheetCollection->updateActiveStyleSheets(updateMode);
if (updateType >= DeferRecalcStyle) {
scheduleForcedStyleRecalc();
return;
}
if (didLayoutWithPendingStylesheets() && !m_styleSheetCollection->hasPendingSheets()) {
m_pendingSheetLayout = IgnoreLayoutWithPendingSheets;
if (renderer())
renderView()->repaintViewAndCompositedLayers();
}
if (!needsRecalc)
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() : 0);
recalcStyle(Force);
}
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!ownerElement())
printf("Finished update of style selector at time %d\n", elapsedTime());
#endif
if (renderer()) {
renderer()->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::setHoverNode(PassRefPtr<Node> newHoverNode)
{
m_hoverNode = newHoverNode;
}
void Document::setActiveElement(PassRefPtr<Element> newActiveElement)
{
if (!newActiveElement) {
m_activeElement.clear();
return;
}
m_activeElement = newActiveElement;
}
void Document::focusedNodeRemoved()
{
setFocusedNode(0);
}
void Document::removeFocusedNodeOfSubtree(Node* node, bool amongChildrenOnly)
{
if (!m_focusedNode)
return;
Node* focusedNode = node->treeScope()->focusedNode();
if (!focusedNode)
return;
bool nodeInSubtree = false;
if (amongChildrenOnly)
nodeInSubtree = focusedNode->isDescendantOf(node);
else
nodeInSubtree = (focusedNode == node) || focusedNode->isDescendantOf(node);
if (nodeInSubtree)
document()->focusedNodeRemoved();
}
void Document::hoveredNodeDetached(Node* node)
{
if (!m_hoverNode)
return;
NodeRenderingTraversal::ParentDetails details;
if (node != m_hoverNode && (!m_hoverNode->isTextNode() || node != NodeRenderingTraversal::parent(m_hoverNode.get(), &details)))
return;
for (m_hoverNode = NodeRenderingTraversal::parent(node, &details); m_hoverNode && !m_hoverNode->renderer(); m_hoverNode = NodeRenderingTraversal::parent(m_hoverNode.get(), &details)) { }
// If the mouse cursor is not visible, do not clear existing
// hover effects on the ancestors of |node| and do not invoke
// new hover effects on any other element.
if (!page()->isCursorVisible())
return;
if (frame())
frame()->eventHandler()->scheduleHoverStateUpdate();
}
void Document::activeChainNodeDetached(Node* node)
{
if (!m_activeElement)
return;
NodeRenderingTraversal::ParentDetails details;
if (node != m_activeElement && (!m_activeElement->isTextNode() || node != NodeRenderingTraversal::parent(m_activeElement.get(), &details)))
return;
Node* activeNode = NodeRenderingTraversal::parent(node, &details);
for (; activeNode && activeNode->isElementNode() && !activeNode->renderer(); activeNode = NodeRenderingTraversal::parent(activeNode, &details)) { }
m_activeElement = activeNode && activeNode->isElementNode() ? toElement(activeNode) : 0;
}
const Vector<AnnotatedRegionValue>& Document::annotatedRegions() const
{
return m_annotatedRegions;
}
void Document::setAnnotatedRegions(const Vector<AnnotatedRegionValue>& regions)
{
m_annotatedRegions = regions;
setAnnotatedRegionsDirty(false);
}
bool Document::setFocusedNode(PassRefPtr<Node> prpNewFocusedNode, FocusDirection direction)
{
RefPtr<Node> newFocusedNode = prpNewFocusedNode;
// Make sure newFocusedNode is actually in this document
if (newFocusedNode && (newFocusedNode->document() != this))
return true;
if (m_focusedNode == newFocusedNode)
return true;
bool focusChangeBlocked = false;
RefPtr<Node> oldFocusedNode = m_focusedNode;
m_focusedNode = 0;
// Remove focus from the existing focus node (if any)
if (oldFocusedNode) {
ASSERT(!oldFocusedNode->inDetach());
if (oldFocusedNode->active())
oldFocusedNode->setActive(false);
oldFocusedNode->setFocus(false);
// Dispatch a change event for text fields or textareas that have been edited
if (oldFocusedNode->isElementNode()) {
Element* element = toElement(oldFocusedNode.get());
if (element->wasChangedSinceLastFormControlChangeEvent())
element->dispatchFormControlChangeEvent();
}
// Dispatch the blur event and let the node do any other blur related activities (important for text fields)
oldFocusedNode->dispatchBlurEvent(newFocusedNode);
if (m_focusedNode) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedNode = 0;
}
oldFocusedNode->dispatchFocusOutEvent(eventNames().focusoutEvent, newFocusedNode); // 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.
oldFocusedNode->dispatchFocusOutEvent(eventNames().DOMFocusOutEvent, newFocusedNode); // DOM level 2 name for compatibility.
if (m_focusedNode) {
// handler shifted focus
focusChangeBlocked = true;
newFocusedNode = 0;
}
if (oldFocusedNode == this && oldFocusedNode->hasOneRef())
return true;
if (oldFocusedNode->isRootEditableElement())
frame()->editor()->didEndEditing();
if (view()) {
Widget* oldWidget = widgetForNode(oldFocusedNode.get());
if (oldWidget)
oldWidget->setFocus(false);
else
view()->setFocus(false);
}
}
if (newFocusedNode && newFocusedNode->isFocusable()) {
if (newFocusedNode->isRootEditableElement() && !acceptsEditingFocus(newFocusedNode.get())) {
// delegate blocks focus change
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
// Set focus on the new node
m_focusedNode = newFocusedNode;
// Dispatch the focus event and let the node do any other focus related activities (important for text fields)
m_focusedNode->dispatchFocusEvent(oldFocusedNode, direction);
if (m_focusedNode != newFocusedNode) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedNode->dispatchFocusInEvent(eventNames().focusinEvent, oldFocusedNode); // DOM level 3 bubbling focus event.
if (m_focusedNode != newFocusedNode) {
// 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_focusedNode->dispatchFocusInEvent(eventNames().DOMFocusInEvent, oldFocusedNode); // DOM level 2 for compatibility.
if (m_focusedNode != newFocusedNode) {
// handler shifted focus
focusChangeBlocked = true;
goto SetFocusedNodeDone;
}
m_focusedNode->setFocus(true);
if (m_focusedNode->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 = widgetForNode(m_focusedNode.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 = widgetForNode(m_focusedNode.get());
}
if (focusWidget)
focusWidget->setFocus(true);
else
view()->setFocus(true);
}
}
if (!focusChangeBlocked && m_focusedNode) {
// Create the AXObject cache in a focus change because Chromium relies on it.
if (AXObjectCache* cache = axObjectCache())
cache->handleFocusedUIElementChanged(oldFocusedNode.get(), newFocusedNode.get());
}
if (!focusChangeBlocked)
page()->chrome().focusedNodeChanged(m_focusedNode.get());
SetFocusedNodeDone:
updateStyleIfNeeded();
return !focusChangeBlocked;
}
void Document::getFocusableNodes(Vector<RefPtr<Node> >& nodes)
{
updateLayout();
for (Node* node = firstChild(); node; node = NodeTraversal::next(node)) {
if (node->isFocusable())
nodes.append(node);
}
}
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()) {
HashSet<Range*>::const_iterator end = m_ranges.end();
for (HashSet<Range*>::const_iterator it = m_ranges.begin(); it != end; ++it)
(*it)->nodeChildrenChanged(container);
}
}
void Document::nodeChildrenWillBeRemoved(ContainerNode* container)
{
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)->nodeChildrenWillBeRemoved(container);
}
HashSet<NodeIterator*>::const_iterator nodeIteratorsEnd = m_nodeIterators.end();
for (HashSet<NodeIterator*>::const_iterator it = m_nodeIterators.begin(); it != nodeIteratorsEnd; ++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::setWindowAttributeEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, DOMWrapperWorld* isolatedWorld)
{
DOMWindow* domWindow = this->domWindow();
if (!domWindow)
return;
domWindow->setAttributeEventListener(eventType, listener, isolatedWorld);
}
EventListener* Document::getWindowAttributeEventListener(const AtomicString& eventType, DOMWrapperWorld* isolatedWorld)
{
DOMWindow* domWindow = this->domWindow();
if (!domWindow)
return 0;
return domWindow->getAttributeEventListener(eventType, isolatedWorld);
}
void Document::dispatchWindowEvent(PassRefPtr<Event> event, PassRefPtr<EventTarget> target)
{
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
DOMWindow* domWindow = this->domWindow();
if (!domWindow)
return;
domWindow->dispatchEvent(event, target);
}
void Document::enqueueWindowEvent(PassRefPtr<Event> event)
{
event->setTarget(domWindow());
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 0;
}
void Document::dispatchWindowLoadEvent()
{
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
DOMWindow* domWindow = this->domWindow();
if (!domWindow)
return;
domWindow->dispatchLoadEvent();
m_loadEventFinished = true;
}
void Document::addMutationEventListenerTypeIfEnabled(ListenerType listenerType)
{
if (ContextFeatures::mutationEventsEnabled(this))
addListenerType(listenerType);
}
void Document::addListenerTypeIfNeeded(const AtomicString& eventType)
{
if (eventType == eventNames().DOMSubtreeModifiedEvent)
addMutationEventListenerTypeIfEnabled(DOMSUBTREEMODIFIED_LISTENER);
else if (eventType == eventNames().DOMNodeInsertedEvent)
addMutationEventListenerTypeIfEnabled(DOMNODEINSERTED_LISTENER);
else if (eventType == eventNames().DOMNodeRemovedEvent)
addMutationEventListenerTypeIfEnabled(DOMNODEREMOVED_LISTENER);
else if (eventType == eventNames().DOMNodeRemovedFromDocumentEvent)
addMutationEventListenerTypeIfEnabled(DOMNODEREMOVEDFROMDOCUMENT_LISTENER);
else if (eventType == eventNames().DOMNodeInsertedIntoDocumentEvent)
addMutationEventListenerTypeIfEnabled(DOMNODEINSERTEDINTODOCUMENT_LISTENER);
else if (eventType == eventNames().DOMCharacterDataModifiedEvent)
addMutationEventListenerTypeIfEnabled(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 0;
}
HTMLFrameOwnerElement* Document::ownerElement() const
{
if (!frame())
return 0;
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();
}
KURL 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;
}
KURL 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);
if (m_frame)
m_frame->script()->updateSecurityOrigin();
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);
if (m_frame)
m_frame->script()->updateSecurityOrigin();
}
// 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;
}
KURL Document::completeURL(const String& url, const KURL& baseURLOverride) const
{
// Always return a null URL when passed a null string.
// FIXME: Should we change the KURL constructor to have this behavior?
// See also [CSS]StyleSheet::completeURL(const String&)
if (url.isNull())
return KURL();
const KURL& baseURL = ((baseURLOverride.isEmpty() || baseURLOverride == blankURL()) && parentDocument()) ? parentDocument()->baseURL() : baseURLOverride;
if (!m_decoder)
return KURL(baseURL, url);
return KURL(baseURL, url, m_decoder->encoding());
}
KURL Document::completeURL(const String& url) const
{
return completeURL(url, m_baseURL);
}
void Document::documentWillBecomeInactive()
{
if (renderer())
renderView()->setIsInWindow(false);
}
// 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();
}
KURL 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 KURL();
// FIXME: Why do we need to wait for FrameStateComplete?
if (frame()->loader()->state() != FrameStateComplete)
return KURL();
if (!head())
return KURL();
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 KURL();
}
void Document::pushCurrentScript(PassRefPtr<HTMLScriptElement> newCurrentScript)
{
ASSERT(newCurrentScript);
m_currentScriptStack.append(newCurrentScript);
}
void Document::popCurrentScript()
{
ASSERT(!m_currentScriptStack.isEmpty());
m_currentScriptStack.removeLast();
}
void Document::applyXSLTransform(ProcessingInstruction* pi)
{
UseCounter::count(this, UseCounter::XSLProcessingInstruction);
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;
}
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 0;
Frame* parent = m_frame->tree()->parent();
if (!parent)
return 0;
return parent->document();
}
Document* Document::topDocument() const
{
Document* doc = const_cast<Document *>(this);
Element* element;
while ((element = doc->ownerElement()))
doc = element->document();
return doc;
}
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 0;
QualifiedName qName(prefix, localName, namespaceURI);
if (!shouldIgnoreNamespaceChecks && !hasValidNamespaceForAttributes(qName)) {
ec = NAMESPACE_ERR;
return 0;
}
return Attr::create(this, qName, emptyString());
}
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);
}
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<HTMLNameCollection>(this, WindowNamedItems, name);
}
PassRefPtr<HTMLCollection> Document::documentNamedItems(const AtomicString& name)
{
return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLNameCollection>(this, DocumentNamedItems, name);
}
void Document::finishedParsing()
{
ASSERT(!scriptableDocumentParser() || !m_parser->isParsing());
ASSERT(!scriptableDocumentParser() || m_readyState != Loading);
setParsing(false);
if (!m_documentTiming.domContentLoadedEventStart)
m_documentTiming.domContentLoadedEventStart = monotonicallyIncreasingTime();
dispatchEvent(Event::create(eventNames().DOMContentLoadedEvent, true, false));
if (!m_documentTiming.domContentLoadedEventEnd)
m_documentTiming.domContentLoadedEventEnd = monotonicallyIncreasingTime();
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()
{
static const int timeBeforeThrowingAwayStyleResolverAfterLastUseInSeconds = 60;
static const int holdOffTimeBeforeReschedulingTimerInSeconds = 5;
double currentTime = WTF::currentTime();
if (currentTime > m_lastStyleResolverAccessTime + holdOffTimeBeforeReschedulingTimerInSeconds) {
m_styleResolverThrowawayTimer.startOneShot(timeBeforeThrowingAwayStyleResolverAfterLastUseInSeconds);
m_lastStyleResolverAccessTime = currentTime;
}
}
void Document::styleResolverThrowawayTimerFired(Timer<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.prepend(newURL);
}
return m_iconURLs;
}
void Document::setUseSecureKeyboardEntryWhenActive(bool usesSecureKeyboard)
{
if (m_useSecureKeyboardEntryWhenActive == usesSecureKeyboard)
return;
m_useSecureKeyboardEntryWhenActive = usesSecureKeyboard;
m_frame->selection()->updateSecureKeyboardEntryIfActive();
}
bool Document::useSecureKeyboardEntryWhenActive() const
{
return m_useSecureKeyboardEntryWhenActive;
}
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 = KURL(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()) {
// 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();
}
}
}
Document* parentDocument = ownerElement() ? ownerElement()->document() : 0;
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());
}
void Document::didUpdateSecurityOrigin()
{
if (!m_frame)
return;
m_frame->script()->updateSecurityOrigin();
}
bool Document::isContextThread() const
{
return isMainThread();
}
void Document::updateURLForPushOrReplaceState(const KURL& 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::updateFocusAppearanceTimerFired(Timer<Document>*)
{
Node* node = focusedNode();
if (!node)
return;
if (!node->isElementNode())
return;
updateLayout();
Element* element = toElement(node);
if (element->isFocusable())
element->updateFocusAppearance(m_updateFocusAppearanceRestoresSelection);
}
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 0;
element->setSize(IntSize(width, height));
return element->getContext(type);
}
HTMLCanvasElement* Document::getCSSCanvasElement(const String& name)
{
RefPtr<HTMLCanvasElement>& element = m_cssCanvasElements.add(name, 0).iterator->value;
if (!element) {
element = HTMLCanvasElement::create(this);
element->setAccelerationDisabled(true);
}
return element.get();
}
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, PassRefPtr<ScriptCallStack> callStack, ScriptState* 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, callStack, state, requestIdentifier);
}
const 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();
if (m_parser)
m_parser->suspendScheduledTasks();
m_scheduledTasksAreSuspended = true;
}
void Document::resumeScheduledTasks()
{
ASSERT(m_scheduledTasksAreSuspended);
if (m_parser)
m_parser->resumeScheduledTasks();
if (!m_pendingTasks.isEmpty())
m_pendingTasksTimer.startOneShot(0);
scriptRunner()->resume();
resumeActiveDOMObjects();
resumeScriptedAnimationControllerCallbacks();
m_scheduledTasksAreSuspended = false;
}
void Document::suspendScriptedAnimationControllerCallbacks()
{
if (m_scriptedAnimationController)
m_scriptedAnimationController->suspend();
}
void Document::resumeScriptedAnimationControllerCallbacks()
{
if (m_scriptedAnimationController)
m_scriptedAnimationController->resume();
}
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)
{
if (!ContextFeatures::pushStateEnabled(this))
return;
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=36202 Popstate event needs to fire asynchronously
dispatchWindowEvent(PopStateEvent::create(stateObject, domWindow() ? domWindow()->history() : 0));
}
void Document::addToTopLayer(Element* element)
{
if (element->isInTopLayer())
return;
ASSERT(!m_topLayerElements.contains(element));
m_topLayerElements.append(element);
element->setIsInTopLayer(true);
}
void Document::removeFromTopLayer(Element* element)
{
if (!element->isInTopLayer())
return;
size_t position = m_topLayerElements.find(element);
ASSERT(position != notFound);
m_topLayerElements.remove(position);
element->setIsInTopLayer(false);
}
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 0;
if (Element* element = page()->pointerLockController()->element()) {
if (element->document() == this)
return element;
}
return 0;
}
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();
}
int Document::requestAnimationFrame(PassRefPtr<RequestAnimationFrameCallback> callback)
{
if (!m_scriptedAnimationController) {
m_scriptedAnimationController = ScriptedAnimationController::create(this);
// We need to make sure that we don't start up the animation controller on a background tab, for example.
if (!page())
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);
}
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) 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);
}
static void wheelEventHandlerCountChanged(Document* document)
{
Page* page = document->page();
if (!page)
return;
ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator();
if (!scrollingCoordinator)
return;
FrameView* frameView = document->view();
if (!frameView)
return;
scrollingCoordinator->frameViewWheelEventHandlerCountChanged(frameView);
}
void Document::didAddWheelEventHandler()
{
++m_wheelEventHandlerCount;
Frame* mainFrame = page() ? page()->mainFrame() : 0;
if (mainFrame)
mainFrame->notifyChromeClientWheelEventHandlerCountChanged();
wheelEventHandlerCountChanged(this);
}
void Document::didRemoveWheelEventHandler()
{
ASSERT(m_wheelEventHandlerCount > 0);
--m_wheelEventHandlerCount;
Frame* mainFrame = page() ? page()->mainFrame() : 0;
if (mainFrame)
mainFrame->notifyChromeClientWheelEventHandlerCountChanged();
wheelEventHandlerCountChanged(this);
}
void Document::didAddTouchEventHandler(Node* handler)
{
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 (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->touchEventTargetRectsDidChange(this);
if (m_touchEventTargets->size() == 1)
page->chrome().client()->needTouchEvents(true);
}
}
void Document::didRemoveTouchEventHandler(Node* handler)
{
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 (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
scrollingCoordinator->touchEventTargetRectsDidChange(this);
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);
}
void Document::didRemoveEventTargetNode(Node* handler)
{
if (m_touchEventTargets) {
m_touchEventTargets->removeAll(handler);
if ((handler == this || m_touchEventTargets->isEmpty()) && parentDocument())
parentDocument()->didRemoveEventTargetNode(this);
}
}
void Document::resetLastHandledUserGestureTimestamp()
{
m_lastHandledUserGestureTimestamp = currentTime();
}
HTMLIFrameElement* Document::seamlessParentIFrame() const
{
if (!shouldDisplaySeamlesslyWithParent())
return 0;
HTMLFrameOwnerElement* ownerElement = this->ownerElement();
ASSERT(ownerElement->hasTagName(iframeTag));
return static_cast<HTMLIFrameElement*>(ownerElement);
}
bool Document::shouldDisplaySeamlesslyWithParent() const
{
if (!RuntimeEnabledFeatures::seamlessIFramesEnabled())
return false;
HTMLFrameOwnerElement* ownerElement = this->ownerElement();
if (!ownerElement)
return false;
return m_mayDisplaySeamlesslyWithParent && ownerElement->hasTagName(iframeTag) && ownerElement->fastHasAttribute(seamlessAttr);
}
DocumentLoader* Document::loader() const
{
if (!m_frame)
return 0;
DocumentLoader* loader = m_frame->loader()->documentLoader();
if (!loader)
return 0;
if (m_frame->document() != this)
return 0;
return loader;
}
IntSize Document::viewportSize() const
{
if (!view())
return IntSize();
return view()->visibleContentRect(ScrollableArea::IncludeScrollbars).size();
}
IntSize Document::initialViewportSize() const
{
if (!view())
return IntSize();
return view()->unscaledVisibleContentSize(ScrollableArea::IncludeScrollbars);
}
Node* eventTargetNodeForDocument(Document* doc)
{
if (!doc)
return 0;
Node* node = doc->focusedNode();
if (!node && doc->isPluginDocument()) {
PluginDocument* pluginDocument = toPluginDocument(doc);
node = pluginDocument->pluginNode();
}
if (!node && doc->isHTMLDocument())
node = doc->body();
if (!node)
node = doc->documentElement();
return node;
}
void Document::adjustFloatQuadsForScrollAndAbsoluteZoom(Vector<FloatQuad>& quads, RenderObject* renderer)
{
if (!view())
return;
LayoutRect visibleContentRect = view()->visibleContentRect();
for (size_t i = 0; i < quads.size(); ++i) {
quads[i].move(-visibleContentRect.x(), -visibleContentRect.y());
adjustFloatQuadForAbsoluteZoom(quads[i], renderer);
}
}
void Document::adjustFloatRectForScrollAndAbsoluteZoom(FloatRect& rect, RenderObject* renderer)
{
if (!view())
return;
LayoutRect visibleContentRect = view()->visibleContentRect();
rect.move(-visibleContentRect.x(), -visibleContentRect.y());
adjustFloatRectForAbsoluteZoom(rect, renderer);
}
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
loader()->checkLoadComplete();
frame()->loader()->checkLoadComplete();
}
void Document::setContextFeatures(PassRefPtr<ContextFeatures> features)
{
m_contextFeatures = features;
}
static RenderObject* nearestCommonHoverAncestor(RenderObject* obj1, RenderObject* obj2)
{
if (!obj1 || !obj2)
return 0;
for (RenderObject* currObj1 = obj1; currObj1; currObj1 = currObj1->hoverAncestor()) {
for (RenderObject* currObj2 = obj2; currObj2; currObj2 = currObj2->hoverAncestor()) {
if (currObj1 == currObj2)
return currObj1;
}
}
return 0;
}
void Document::updateHoverActiveState(const HitTestRequest& request, Element* innerElement)
{
ASSERT(!request.readOnly());
Element* innerElementInDocument = innerElement;
while (innerElementInDocument && innerElementInDocument->document() != this) {
innerElementInDocument->document()->updateHoverActiveState(request, innerElementInDocument);
innerElementInDocument = innerElementInDocument->document()->ownerElement();
}
Element* oldActiveElement = activeElement();
if (oldActiveElement && !request.active()) {
// We are clearing the :active chain because the mouse has been released.
for (RenderObject* curr = oldActiveElement->renderer(); curr; curr = curr->parent()) {
if (curr->node()) {
ASSERT(!curr->node()->isTextNode());
curr->node()->setActive(false);
m_userActionElements.setInActiveChain(curr->node(), false);
}
}
setActiveElement(0);
} 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 (RenderObject* curr = newActiveElement->renderer(); curr; curr = curr->parent()) {
if (curr->node() && !curr->isText())
m_userActionElements.setInActiveChain(curr->node(), true);
}
setActiveElement(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 && 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<Node> oldHoverNode = hoverNode();
// A touch release does not set a new hover target; setting the element we're working with to 0
// will clear the chain of hovered elements all the way to the top of the tree.
if (request.touchRelease())
innerElementInDocument = 0;
// Check to see if the hovered node has changed.
// If it hasn't, we do not need to do anything.
Node* newHoverNode = innerElementInDocument;
while (newHoverNode && !newHoverNode->renderer())
newHoverNode = newHoverNode->parentOrShadowHostNode();
// Update our current hover node.
setHoverNode(newHoverNode);
// We have two different objects. Fetch their renderers.
RenderObject* oldHoverObj = oldHoverNode ? oldHoverNode->renderer() : 0;
RenderObject* newHoverObj = newHoverNode ? newHoverNode->renderer() : 0;
// Locate the common ancestor render object for the two renderers.
RenderObject* ancestor = nearestCommonHoverAncestor(oldHoverObj, newHoverObj);
Vector<RefPtr<Node>, 32> nodesToRemoveFromChain;
Vector<RefPtr<Node>, 32> nodesToAddToChain;
if (oldHoverObj != newHoverObj) {
// If the old hovered node 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 (oldHoverNode && !oldHoverObj) {
for (Node* node = oldHoverNode.get(); node; node = node->parentNode()) {
if (!mustBeInActiveChain || (node->isElementNode() && toElement(node)->inActiveChain()))
nodesToRemoveFromChain.append(node);
}
}
// The old hover path only needs to be cleared up to (and not including) the common ancestor;
for (RenderObject* curr = oldHoverObj; curr && curr != ancestor; curr = curr->hoverAncestor()) {
if (curr->node() && !curr->isText() && (!mustBeInActiveChain || curr->node()->inActiveChain()))
nodesToRemoveFromChain.append(curr->node());
}
}
// Now set the hover state for our new object up to the root.
for (RenderObject* curr = newHoverObj; curr; curr = curr->hoverAncestor()) {
if (curr->node() && !curr->isText() && (!mustBeInActiveChain || curr->node()->inActiveChain()))
nodesToAddToChain.append(curr->node());
}
size_t removeCount = nodesToRemoveFromChain.size();
for (size_t i = 0; i < removeCount; ++i)
nodesToRemoveFromChain[i]->setHovered(false);
size_t addCount = nodesToAddToChain.size();
for (size_t i = 0; i < addCount; ++i) {
if (allowActiveChanges)
nodesToAddToChain[i]->setActive(true);
nodesToAddToChain[i]->setHovered(true);
}
updateStyleIfNeeded();
}
void Document::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
ContainerNode::reportMemoryUsage(memoryObjectInfo);
TreeScope::reportMemoryUsage(memoryObjectInfo);
ScriptExecutionContext::reportMemoryUsage(memoryObjectInfo);
info.addMember(m_styleResolver, "styleResolver");
info.addMember(m_url, "url");
info.addMember(m_baseURL, "baseURL");
info.addMember(m_baseURLOverride, "baseURLOverride");
info.addMember(m_baseElementURL, "baseElementURL");
info.addMember(m_cookieURL, "cookieURL");
info.addMember(m_firstPartyForCookies, "firstPartyForCookies");
info.addMember(m_documentURI, "documentURI");
info.addMember(m_baseTarget, "baseTarget");
info.addMember(m_docType, "docType");
info.addMember(m_implementation, "implementation");
info.addMember(m_elemSheet, "elemSheet");
info.addMember(m_frame, "frame");
info.addMember(m_cachedResourceLoader, "cachedResourceLoader");
info.addMember(m_styleSheetCollection, "styleSheetCollection");
info.addMember(m_styleSheetList, "styleSheetList");
info.addMember(m_formController, "formController");
info.addMember(m_nodeIterators, "nodeIterators");
info.addMember(m_ranges, "ranges");
info.addMember(m_title.string(), "title.string()");
info.addMember(m_rawTitle.string(), "rawTitle.string()");
info.addMember(m_xmlEncoding, "xmlEncoding");
info.addMember(m_xmlVersion, "xmlVersion");
info.addMember(m_contentLanguage, "contentLanguage");
info.addMember(m_annotatedRegions, "annotatedRegions");
info.addMember(m_cssCanvasElements, "cssCanvasElements");
info.addMember(m_iconURLs, "iconURLs");
info.addMember(m_elementsByAccessKey, "elementsByAccessKey");
info.addMember(m_eventQueue, "eventQueue");
info.addMember(m_pendingTasks, "pendingTasks");
info.addMember(m_prerenderer, "prerenderer");
info.addMember(m_listsInvalidatedAtDocument, "listsInvalidatedAtDocument");
info.addMember(m_styleResolverThrowawayTimer, "styleResolverThrowawayTimer");
info.addMember(m_parser, "parser");
info.addMember(m_contextFeatures, "contextFeatures");
info.addMember(m_focusedNode, "focusedNode");
info.addMember(m_hoverNode, "hoverNode");
info.addMember(m_documentElement, "documentElement");
info.addMember(m_visitedLinkState, "visitedLinkState");
info.addMember(m_styleRecalcTimer, "styleRecalcTimer");
info.addMember(m_titleElement, "titleElement");
info.ignoreMember(m_renderArena);
info.addMember(m_axObjectCache, "axObjectCache");
info.addMember(m_markers, "markers");
info.addMember(m_cssTarget, "cssTarget");
info.addMember(m_updateFocusAppearanceTimer, "updateFocusAppearanceTimer");
info.addMember(m_pendingStateObject, "pendingStateObject");
info.addMember(m_scriptRunner, "scriptRunner");
info.addMember(m_transformSource, "transformSource");
info.addMember(m_transformSourceDocument, "transformSourceDocument");
info.addMember(m_decoder, "decoder");
info.addMember(m_xpathEvaluator, "xpathEvaluator");
info.addMember(m_svgExtensions, "svgExtensions");
info.addMember(m_selectorQueryCache, "selectorQueryCache");
info.addMember(m_renderer, "renderer");
info.addMember(m_weakFactory, "weakFactory");
info.addMember(m_idAttributeName, "idAttributeName");
info.addMember(m_topLayerElements, "topLayerElements");
info.addMember(m_loadEventDelayTimer, "loadEventDelayTimer");
info.addMember(m_viewportArguments, "viewportArguments");
info.addMember(m_documentTiming, "documentTiming");
info.addMember(m_mediaQueryMatcher, "mediaQueryMatcher");
info.addMember(m_touchEventTargets, "touchEventTargets");
info.addMember(m_scriptedAnimationController, "scriptedAnimationController");
info.addMember(m_pendingTasksTimer, "pendingTasksTimer");
info.addMember(m_textAutosizer, "textAutosizer");
info.addMember(m_namedFlows, "namedFlows");
info.addMember(m_domSecurityPolicy, "domSecurityPolicy");
info.addMember(m_sharedObjectPoolClearTimer, "sharedObjectPoolClearTimer");
info.addMember(m_sharedObjectPool, "sharedObjectPool");
info.addMember(m_localeCache, "localeCache");
info.addMember(m_templateDocument, "templateDocument");
info.addMember(m_templateDocumentHost, "templateDocumentHost");
info.addMember(m_activeElement, "activeElement");
}
bool Document::haveStylesheetsLoaded() const
{
return !m_styleSheetCollection->hasPendingSheets() || m_ignorePendingStylesheets;
}
Locale& Document::getCachedLocale(const AtomicString& locale)
{
AtomicString localeKey = locale;
if (locale.isEmpty() || !RuntimeEnabledFeatures::langAttributeAwareFormControlUIEnabled())
localeKey = defaultLanguage();
LocaleIdentifierToLocaleMap::AddResult result = m_localeCache.add(localeKey, nullptr);
if (result.isNewEntry)
result.iterator->value = Locale::create(localeKey);
return *(result.iterator->value);
}
Document* Document::ensureTemplateDocument()
{
if (const Document* document = templateDocument())
return const_cast<Document*>(document);
if (isHTMLDocument())
m_templateDocument = HTMLDocument::create(0, blankURL());
else
m_templateDocument = Document::create(0, blankURL());
m_templateDocument->setTemplateDocumentHost(this); // balanced in dtor.
return m_templateDocument.get();
}
PassRefPtr<FontLoader> Document::fontloader()
{
if (!m_fontloader)
m_fontloader = FontLoader::create(this);
return m_fontloader;
}
void Document::didAssociateFormControl(Element* element)
{
if (!frame() || !frame()->page())
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();
}
PassOwnPtr<ContextLifecycleNotifier> Document::createLifecycleNotifier()
{
return DocumentLifecycleNotifier::create(this);
}
DocumentLifecycleNotifier* Document::lifecycleNotifier()
{
return static_cast<DocumentLifecycleNotifier*>(ScriptExecutionContext::lifecycleNotifier());
}
} // namespace WebCore