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chromium / chromium / blink / 121b1389cc4982110b1690b240c5b98aec385c17 / . / Source / core / css / resolver / StyleResolver.cpp
blob: dfda920807e73e9e6328560defaab5d0e3bff32d [file] [log] [blame]
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
* Copyright (C) 2012 Google Inc. 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/css/resolver/StyleResolver.h"
#include "CSSPropertyNames.h"
#include "FontFamilyNames.h"
#include "HTMLNames.h"
#include "MathMLNames.h"
#include "RuntimeEnabledFeatures.h"
#include "SVGNames.h"
#include "UserAgentStyleSheets.h"
#include "XMLNames.h"
#include "core/animation/AnimatableValue.h"
#include "core/animation/Animation.h"
#include "core/css/CSSBorderImage.h"
#include "core/css/CSSCalculationValue.h"
#include "core/css/CSSCursorImageValue.h"
#include "core/css/CSSDefaultStyleSheets.h"
#include "core/css/CSSFontFaceRule.h"
#include "core/css/CSSFontSelector.h"
#include "core/css/CSSImageSetValue.h"
#include "core/css/CSSLineBoxContainValue.h"
#include "core/css/CSSPageRule.h"
#include "core/css/CSSParser.h"
#include "core/css/CSSPrimitiveValueMappings.h"
#include "core/css/CSSReflectValue.h"
#include "core/css/CSSSelector.h"
#include "core/css/CSSSelectorList.h"
#include "core/css/CSSStyleRule.h"
#include "core/css/CSSSupportsRule.h"
#include "core/css/CSSTimingFunctionValue.h"
#include "core/css/CSSValueList.h"
#include "core/css/CSSVariableValue.h"
#include "core/css/Counter.h"
#include "core/css/DeprecatedStyleBuilder.h"
#include "core/css/ElementRuleCollector.h"
#include "core/css/FontFeatureValue.h"
#include "core/css/FontValue.h"
#include "core/css/MediaList.h"
#include "core/css/MediaQueryEvaluator.h"
#include "core/css/PageRuleCollector.h"
#include "core/css/Pair.h"
#include "core/css/Rect.h"
#include "core/css/RuleSet.h"
#include "core/css/SelectorCheckerFastPath.h"
#include "core/css/ShadowValue.h"
#include "core/css/StylePropertySet.h"
#include "core/css/StylePropertyShorthand.h"
#include "core/css/StyleRule.h"
#include "core/css/StyleRuleImport.h"
#include "core/css/StyleSheetContents.h"
#include "core/css/StyleSheetList.h"
#include "core/css/WebKitCSSKeyframeRule.h"
#include "core/css/WebKitCSSKeyframesRule.h"
#include "core/css/WebKitCSSMixFunctionValue.h"
#include "core/css/WebKitCSSRegionRule.h"
#include "core/css/WebKitCSSSVGDocumentValue.h"
#include "core/css/WebKitCSSShaderValue.h"
#include "core/css/resolver/FilterOperationResolver.h"
#include "core/css/resolver/StyleBuilder.h"
#include "core/css/resolver/TransformBuilder.h"
#include "core/css/resolver/ViewportStyleResolver.h"
#include "core/dom/Attribute.h"
#include "core/dom/ContextFeatures.h"
#include "core/dom/DocumentStyleSheetCollection.h"
#include "core/dom/NodeRenderStyle.h"
#include "core/dom/NodeRenderingContext.h"
#include "core/dom/Text.h"
#include "core/dom/VisitedLinkState.h"
#include "core/dom/WebCoreMemoryInstrumentation.h"
#include "core/dom/shadow/ElementShadow.h"
#include "core/dom/shadow/InsertionPoint.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/editing/FrameSelection.h"
#include "core/html/HTMLDocument.h"
#include "core/html/HTMLIFrameElement.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/HTMLOptionElement.h"
#include "core/html/HTMLProgressElement.h"
#include "core/html/HTMLStyleElement.h"
#include "core/html/HTMLTextAreaElement.h"
#include "core/html/track/WebVTTElement.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "core/loader/cache/CachedDocument.h"
#include "core/loader/cache/CachedImage.h"
#include "core/loader/cache/CachedSVGDocumentReference.h"
#include "core/page/Frame.h"
#include "core/page/FrameView.h"
#include "core/page/Page.h"
#include "core/page/Settings.h"
#include "core/platform/CalculationValue.h"
#include "core/platform/LinkHash.h"
#include "core/platform/graphics/filters/custom/CustomFilterArrayParameter.h"
#include "core/platform/graphics/filters/custom/CustomFilterConstants.h"
#include "core/platform/graphics/filters/custom/CustomFilterNumberParameter.h"
#include "core/platform/graphics/filters/custom/CustomFilterOperation.h"
#include "core/platform/graphics/filters/custom/CustomFilterParameter.h"
#include "core/platform/graphics/filters/custom/CustomFilterProgramInfo.h"
#include "core/platform/graphics/filters/custom/CustomFilterTransformParameter.h"
#include "core/platform/text/LocaleToScriptMapping.h"
#include "core/rendering/RenderRegion.h"
#include "core/rendering/RenderScrollbar.h"
#include "core/rendering/RenderScrollbarTheme.h"
#include "core/rendering/RenderTheme.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/style/ContentData.h"
#include "core/rendering/style/CounterContent.h"
#include "core/rendering/style/CursorList.h"
#include "core/rendering/style/KeyframeList.h"
#include "core/rendering/style/QuotesData.h"
#include "core/rendering/style/RenderStyleConstants.h"
#include "core/rendering/style/ShadowData.h"
#include "core/rendering/style/StyleCachedImage.h"
#include "core/rendering/style/StyleCachedImageSet.h"
#include "core/rendering/style/StyleCachedShader.h"
#include "core/rendering/style/StyleCustomFilterProgram.h"
#include "core/rendering/style/StyleCustomFilterProgramCache.h"
#include "core/rendering/style/StyleGeneratedImage.h"
#include "core/rendering/style/StylePendingImage.h"
#include "core/rendering/style/StylePendingShader.h"
#include "core/rendering/style/StyleShader.h"
#include "core/svg/SVGDocument.h"
#include "core/svg/SVGDocumentExtensions.h"
#include "core/svg/SVGElement.h"
#include "core/svg/SVGFontFaceElement.h"
#include "core/svg/SVGURIReference.h"
#include "weborigin/SecurityOrigin.h"
#include "wtf/MemoryInstrumentationHashMap.h"
#include "wtf/MemoryInstrumentationHashSet.h"
#include "wtf/MemoryInstrumentationVector.h"
#include "wtf/StdLibExtras.h"
#include "wtf/Vector.h"
using namespace std;
namespace WTF {
template<> struct SequenceMemoryInstrumentationTraits<const WebCore::RuleData*> {
template <typename I> static void reportMemoryUsage(I, I, MemoryClassInfo&) { }
};
}
namespace WebCore {
using namespace HTMLNames;
#define HANDLE_INHERIT(prop, Prop) \
if (isInherit) { \
m_state.style()->set##Prop(m_state.parentStyle()->prop()); \
return; \
}
#define HANDLE_INHERIT_AND_INITIAL(prop, Prop) \
HANDLE_INHERIT(prop, Prop) \
if (isInitial) { \
m_state.style()->set##Prop(RenderStyle::initial##Prop()); \
return; \
}
RenderStyle* StyleResolver::s_styleNotYetAvailable;
static StylePropertySet* leftToRightDeclaration()
{
DEFINE_STATIC_LOCAL(RefPtr<MutableStylePropertySet>, leftToRightDecl, (MutableStylePropertySet::create()));
if (leftToRightDecl->isEmpty())
leftToRightDecl->setProperty(CSSPropertyDirection, CSSValueLtr);
return leftToRightDecl.get();
}
static StylePropertySet* rightToLeftDeclaration()
{
DEFINE_STATIC_LOCAL(RefPtr<MutableStylePropertySet>, rightToLeftDecl, (MutableStylePropertySet::create()));
if (rightToLeftDecl->isEmpty())
rightToLeftDecl->setProperty(CSSPropertyDirection, CSSValueRtl);
return rightToLeftDecl.get();
}
void StyleResolver::MatchResult::addMatchedProperties(const StylePropertySet* properties, StyleRule* rule, unsigned linkMatchType, PropertyWhitelistType propertyWhitelistType)
{
matchedProperties.grow(matchedProperties.size() + 1);
StyleResolver::MatchedProperties& newProperties = matchedProperties.last();
newProperties.properties = const_cast<StylePropertySet*>(properties);
newProperties.linkMatchType = linkMatchType;
newProperties.whitelistType = propertyWhitelistType;
matchedRules.append(rule);
}
StyleResolver::StyleResolver(Document* document, bool matchAuthorAndUserStyles)
: m_matchedPropertiesCacheAdditionsSinceLastSweep(0)
, m_matchedPropertiesCacheSweepTimer(this, &StyleResolver::sweepMatchedPropertiesCache)
, m_document(document)
, m_matchAuthorAndUserStyles(matchAuthorAndUserStyles)
, m_fontSelector(CSSFontSelector::create(document))
#if ENABLE(CSS_DEVICE_ADAPTATION)
, m_viewportStyleResolver(ViewportStyleResolver::create(document))
#endif
, m_styleBuilder(DeprecatedStyleBuilder::sharedStyleBuilder())
, m_styleMap(this)
{
Element* root = document->documentElement();
CSSDefaultStyleSheets::initDefaultStyle(root);
// construct document root element default style. this is needed
// to evaluate media queries that contain relative constraints, like "screen and (max-width: 10em)"
// This is here instead of constructor, because when constructor is run,
// document doesn't have documentElement
// NOTE: this assumes that element that gets passed to styleForElement -call
// is always from the document that owns the style selector
FrameView* view = document->view();
if (view)
m_medium = adoptPtr(new MediaQueryEvaluator(view->mediaType()));
else
m_medium = adoptPtr(new MediaQueryEvaluator("all"));
if (root)
m_rootDefaultStyle = styleForElement(root, 0, DisallowStyleSharing, MatchOnlyUserAgentRules);
if (m_rootDefaultStyle && view)
m_medium = adoptPtr(new MediaQueryEvaluator(view->mediaType(), view->frame(), m_rootDefaultStyle.get()));
m_styleTree.clear();
DocumentStyleSheetCollection* styleSheetCollection = document->styleSheetCollection();
m_ruleSets.initUserStyle(styleSheetCollection, *m_medium, *this);
#if ENABLE(SVG_FONTS)
if (document->svgExtensions()) {
const HashSet<SVGFontFaceElement*>& svgFontFaceElements = document->svgExtensions()->svgFontFaceElements();
HashSet<SVGFontFaceElement*>::const_iterator end = svgFontFaceElements.end();
for (HashSet<SVGFontFaceElement*>::const_iterator it = svgFontFaceElements.begin(); it != end; ++it)
fontSelector()->addFontFaceRule((*it)->fontFaceRule());
}
#endif
appendAuthorStyleSheets(0, styleSheetCollection->activeAuthorStyleSheets());
}
void StyleResolver::appendAuthorStyleSheets(unsigned firstNew, const Vector<RefPtr<CSSStyleSheet> >& styleSheets)
{
// This handles sheets added to the end of the stylesheet list only. In other cases the style resolver
// needs to be reconstructed. To handle insertions too the rule order numbers would need to be updated.
ScopedStyleResolver* lastUpdatedResolver = 0;
unsigned size = styleSheets.size();
for (unsigned i = firstNew; i < size; ++i) {
CSSStyleSheet* cssSheet = styleSheets[i].get();
ASSERT(!cssSheet->disabled());
if (cssSheet->mediaQueries() && !m_medium->eval(cssSheet->mediaQueries(), this))
continue;
StyleSheetContents* sheet = cssSheet->contents();
ScopedStyleResolver* resolver = ensureScopedStyleResolver(ScopedStyleResolver::scopeFor(cssSheet));
ASSERT(resolver);
resolver->addRulesFromSheet(sheet, *m_medium, this);
m_inspectorCSSOMWrappers.collectFromStyleSheetIfNeeded(cssSheet);
if (lastUpdatedResolver && lastUpdatedResolver != resolver)
lastUpdatedResolver->postAddRulesFromSheet();
lastUpdatedResolver = resolver;
}
if (lastUpdatedResolver)
lastUpdatedResolver->postAddRulesFromSheet();
collectFeatures();
if (document()->renderer() && document()->renderer()->style())
document()->renderer()->style()->font().update(fontSelector());
#if ENABLE(CSS_DEVICE_ADAPTATION)
viewportStyleResolver()->resolve();
#endif
}
void StyleResolver::resetAuthorStyle()
{
m_styleTree.clear();
}
static PassOwnPtr<RuleSet> makeRuleSet(const Vector<RuleFeature>& rules)
{
size_t size = rules.size();
if (!size)
return nullptr;
OwnPtr<RuleSet> ruleSet = RuleSet::create();
for (size_t i = 0; i < size; ++i)
ruleSet->addRule(rules[i].rule, rules[i].selectorIndex, rules[i].hasDocumentSecurityOrigin ? RuleHasDocumentSecurityOrigin : RuleHasNoSpecialState);
ruleSet->shrinkToFit();
return ruleSet.release();
}
void StyleResolver::collectFeatures()
{
m_features.clear();
m_ruleSets.collectFeaturesTo(m_features, document()->isViewSource());
m_styleTree.collectFeaturesTo(m_features);
m_siblingRuleSet = makeRuleSet(m_features.siblingRules);
m_uncommonAttributeRuleSet = makeRuleSet(m_features.uncommonAttributeRules);
}
void StyleResolver::pushParentElement(Element* parent)
{
const ContainerNode* parentsParent = parent->parentOrShadowHostElement();
// We are not always invoked consistently. For example, script execution can cause us to enter
// style recalc in the middle of tree building. We may also be invoked from somewhere within the tree.
// Reset the stack in this case, or if we see a new root element.
// Otherwise just push the new parent.
if (!parentsParent || m_selectorFilter.parentStackIsEmpty())
m_selectorFilter.setupParentStack(parent);
else
m_selectorFilter.pushParent(parent);
// Note: We mustn't skip ShadowRoot nodes for the scope stack.
m_styleTree.pushStyleCache(parent, parent->parentOrShadowHostNode());
}
void StyleResolver::popParentElement(Element* parent)
{
// Note that we may get invoked for some random elements in some wacky cases during style resolve.
// Pause maintaining the stack in this case.
if (m_selectorFilter.parentStackIsConsistent(parent))
m_selectorFilter.popParent();
m_styleTree.popStyleCache(parent);
}
void StyleResolver::pushParentShadowRoot(const ShadowRoot* shadowRoot)
{
ASSERT(shadowRoot->host());
m_styleTree.pushStyleCache(shadowRoot, shadowRoot->host());
}
void StyleResolver::popParentShadowRoot(const ShadowRoot* shadowRoot)
{
ASSERT(shadowRoot->host());
m_styleTree.popStyleCache(shadowRoot);
}
// This is a simplified style setting function for keyframe styles
void StyleResolver::addKeyframeStyle(PassRefPtr<StyleRuleKeyframes> rule)
{
AtomicString s(rule->name());
m_keyframesRuleMap.set(s.impl(), rule);
}
StyleResolver::~StyleResolver()
{
m_fontSelector->clearDocument();
#if ENABLE(CSS_DEVICE_ADAPTATION)
m_viewportStyleResolver->clearDocument();
#endif
}
void StyleResolver::sweepMatchedPropertiesCache(Timer<StyleResolver>*)
{
// Look for cache entries containing a style declaration with a single ref and remove them.
// This may happen when an element attribute mutation causes it to generate a new inlineStyle()
// or presentationAttributeStyle(), potentially leaving this cache with the last ref on the old one.
Vector<unsigned, 16> toRemove;
MatchedPropertiesCache::iterator it = m_matchedPropertiesCache.begin();
MatchedPropertiesCache::iterator end = m_matchedPropertiesCache.end();
for (; it != end; ++it) {
Vector<MatchedProperties>& matchedProperties = it->value.matchedProperties;
for (size_t i = 0; i < matchedProperties.size(); ++i) {
if (matchedProperties[i].properties->hasOneRef()) {
toRemove.append(it->key);
break;
}
}
}
for (size_t i = 0; i < toRemove.size(); ++i)
m_matchedPropertiesCache.remove(toRemove[i]);
m_matchedPropertiesCacheAdditionsSinceLastSweep = 0;
}
bool StyleResolver::classNamesAffectedByRules(const SpaceSplitString& classNames) const
{
for (unsigned i = 0; i < classNames.size(); ++i) {
if (m_features.classesInRules.contains(classNames[i].impl()))
return true;
}
return false;
}
inline void StyleResolver::matchShadowDistributedRules(ElementRuleCollector& collector, bool includeEmptyRules)
{
if (m_ruleSets.shadowDistributedRules().isEmpty())
return;
bool previousCanUseFastReject = collector.canUseFastReject();
SelectorChecker::BehaviorAtBoundary previousBoundary = collector.behaviorAtBoundary();
collector.setBehaviorAtBoundary(static_cast<SelectorChecker::BehaviorAtBoundary>(SelectorChecker::CrossesBoundary | SelectorChecker::ScopeContainsLastMatchedElement));
collector.setCanUseFastReject(false);
collector.clearMatchedRules();
collector.matchedResult().ranges.lastAuthorRule = collector.matchedResult().matchedProperties.size() - 1;
RuleRange ruleRange = collector.matchedResult().ranges.authorRuleRange();
Vector<MatchRequest> matchRequests;
m_ruleSets.shadowDistributedRules().collectMatchRequests(includeEmptyRules, matchRequests);
for (size_t i = 0; i < matchRequests.size(); ++i)
collector.collectMatchingRules(matchRequests[i], ruleRange);
collector.sortAndTransferMatchedRules();
collector.setBehaviorAtBoundary(previousBoundary);
collector.setCanUseFastReject(previousCanUseFastReject);
}
void StyleResolver::matchHostRules(ScopedStyleResolver* resolver, ElementRuleCollector& collector, bool includeEmptyRules)
{
if (m_state.element() != resolver->scope())
return;
resolver->matchHostRules(collector, includeEmptyRules);
}
void StyleResolver::matchScopedAuthorRules(ElementRuleCollector& collector, bool includeEmptyRules)
{
// fast path
if (m_styleTree.hasOnlyScopeResolverForDocument()) {
m_styleTree.scopedStyleResolverForDocument()->matchAuthorRules(collector, includeEmptyRules, true);
return;
}
Vector<std::pair<ScopedStyleResolver*, bool>, 8> stack;
m_styleTree.resolveScopeStyles(m_state.element(), stack);
if (stack.isEmpty())
return;
for (int i = stack.size() - 1; i >= 0; --i) {
ScopedStyleResolver* scopeResolver = stack.at(i).first;
bool applyAuthorStyles = stack.at(i).second;
scopeResolver->matchAuthorRules(collector, includeEmptyRules, applyAuthorStyles);
}
matchHostRules(stack.first().first, collector, includeEmptyRules);
}
void StyleResolver::matchAuthorRules(ElementRuleCollector& collector, bool includeEmptyRules)
{
matchScopedAuthorRules(collector, includeEmptyRules);
matchShadowDistributedRules(collector, includeEmptyRules);
}
void StyleResolver::matchUserRules(ElementRuleCollector& collector, bool includeEmptyRules)
{
if (!m_ruleSets.userStyle())
return;
collector.clearMatchedRules();
collector.matchedResult().ranges.lastUserRule = collector.matchedResult().matchedProperties.size() - 1;
MatchRequest matchRequest(m_ruleSets.userStyle(), includeEmptyRules);
RuleRange ruleRange = collector.matchedResult().ranges.userRuleRange();
collector.collectMatchingRules(matchRequest, ruleRange);
collector.collectMatchingRulesForRegion(matchRequest, ruleRange);
collector.sortAndTransferMatchedRules();
}
void StyleResolver::matchUARules(ElementRuleCollector& collector)
{
collector.setMatchingUARules(true);
// First we match rules from the user agent sheet.
if (CSSDefaultStyleSheets::simpleDefaultStyleSheet)
collector.matchedResult().isCacheable = false;
RuleSet* userAgentStyleSheet = m_medium->mediaTypeMatchSpecific("print")
? CSSDefaultStyleSheets::defaultPrintStyle : CSSDefaultStyleSheets::defaultStyle;
matchUARules(collector, userAgentStyleSheet);
// In quirks mode, we match rules from the quirks user agent sheet.
if (document()->inQuirksMode())
matchUARules(collector, CSSDefaultStyleSheets::defaultQuirksStyle);
// If document uses view source styles (in view source mode or in xml viewer mode), then we match rules from the view source style sheet.
if (document()->isViewSource())
matchUARules(collector, CSSDefaultStyleSheets::viewSourceStyle());
collector.setMatchingUARules(false);
}
void StyleResolver::matchUARules(ElementRuleCollector& collector, RuleSet* rules)
{
collector.clearMatchedRules();
collector.matchedResult().ranges.lastUARule = collector.matchedResult().matchedProperties.size() - 1;
RuleRange ruleRange = collector.matchedResult().ranges.UARuleRange();
collector.collectMatchingRules(MatchRequest(rules), ruleRange);
collector.sortAndTransferMatchedRules();
}
void StyleResolver::matchAllRules(ElementRuleCollector& collector, bool matchAuthorAndUserStyles, bool includeSMILProperties)
{
matchUARules(collector);
// Now we check user sheet rules.
if (matchAuthorAndUserStyles)
matchUserRules(collector, false);
// Now check author rules, beginning first with presentational attributes mapped from HTML.
if (m_state.styledElement()) {
collector.addElementStyleProperties(m_state.styledElement()->presentationAttributeStyle());
// Now we check additional mapped declarations.
// Tables and table cells share an additional mapped rule that must be applied
// after all attributes, since their mapped style depends on the values of multiple attributes.
collector.addElementStyleProperties(m_state.styledElement()->additionalPresentationAttributeStyle());
if (m_state.styledElement()->isHTMLElement()) {
bool isAuto;
TextDirection textDirection = toHTMLElement(m_state.styledElement())->directionalityIfhasDirAutoAttribute(isAuto);
if (isAuto)
collector.matchedResult().addMatchedProperties(textDirection == LTR ? leftToRightDeclaration() : rightToLeftDeclaration());
}
}
// Check the rules in author sheets next.
if (matchAuthorAndUserStyles)
matchAuthorRules(collector, false);
// Now check our inline style attribute.
if (matchAuthorAndUserStyles && m_state.styledElement() && m_state.styledElement()->inlineStyle()) {
// Inline style is immutable as long as there is no CSSOM wrapper.
// FIXME: Media control shadow trees seem to have problems with caching.
bool isInlineStyleCacheable = !m_state.styledElement()->inlineStyle()->isMutable() && !m_state.styledElement()->isInShadowTree();
// FIXME: Constify.
collector.addElementStyleProperties(m_state.styledElement()->inlineStyle(), isInlineStyleCacheable);
}
// Now check SMIL animation override style.
if (includeSMILProperties && matchAuthorAndUserStyles && m_state.styledElement() && m_state.styledElement()->isSVGElement())
collector.addElementStyleProperties(toSVGElement(m_state.styledElement())->animatedSMILStyleProperties(), false /* isCacheable */);
if (m_state.styledElement() && m_state.styledElement()->hasActiveAnimations())
collector.matchedResult().isCacheable = false;
}
inline void StyleResolver::initElement(Element* e)
{
if (m_state.element() != e) {
m_state.initElement(e);
if (e && e == e->document()->documentElement()) {
e->document()->setDirectionSetOnDocumentElement(false);
e->document()->setWritingModeSetOnDocumentElement(false);
}
}
}
static const unsigned cStyleSearchThreshold = 10;
static const unsigned cStyleSearchLevelThreshold = 10;
static inline bool parentElementPreventsSharing(const Element* parentElement)
{
if (!parentElement)
return false;
return parentElement->hasFlagsSetDuringStylingOfChildren();
}
Node* StyleResolver::locateCousinList(Element* parent, unsigned& visitedNodeCount) const
{
if (visitedNodeCount >= cStyleSearchThreshold * cStyleSearchLevelThreshold)
return 0;
if (!parent || !parent->isStyledElement())
return 0;
if (parent->hasScopedHTMLStyleChild())
return 0;
StyledElement* p = static_cast<StyledElement*>(parent);
if (p->inlineStyle())
return 0;
if (p->isSVGElement() && toSVGElement(p)->animatedSMILStyleProperties())
return 0;
if (p->hasID() && m_features.idsInRules.contains(p->idForStyleResolution().impl()))
return 0;
RenderStyle* parentStyle = p->renderStyle();
unsigned subcount = 0;
Node* thisCousin = p;
Node* currentNode = p->previousSibling();
// Reserve the tries for this level. This effectively makes sure that the algorithm
// will never go deeper than cStyleSearchLevelThreshold levels into recursion.
visitedNodeCount += cStyleSearchThreshold;
while (thisCousin) {
while (currentNode) {
++subcount;
if (!currentNode->hasScopedHTMLStyleChild() && currentNode->renderStyle() == parentStyle && currentNode->lastChild()
&& currentNode->isElementNode() && !parentElementPreventsSharing(toElement(currentNode))
&& !toElement(currentNode)->shadow()
) {
// Adjust for unused reserved tries.
visitedNodeCount -= cStyleSearchThreshold - subcount;
return currentNode->lastChild();
}
if (subcount >= cStyleSearchThreshold)
return 0;
currentNode = currentNode->previousSibling();
}
currentNode = locateCousinList(thisCousin->parentElement(), visitedNodeCount);
thisCousin = currentNode;
}
return 0;
}
bool StyleResolver::styleSharingCandidateMatchesRuleSet(RuleSet* ruleSet)
{
if (!ruleSet)
return false;
ElementRuleCollector collector(this, m_state);
return collector.hasAnyMatchingRules(ruleSet);
}
bool StyleResolver::canShareStyleWithControl(StyledElement* element) const
{
const StyleResolverState& state = m_state;
HTMLInputElement* thisInputElement = element->toInputElement();
HTMLInputElement* otherInputElement = state.element()->toInputElement();
if (!thisInputElement || !otherInputElement)
return false;
if (thisInputElement->elementData() != otherInputElement->elementData()) {
if (thisInputElement->fastGetAttribute(typeAttr) != otherInputElement->fastGetAttribute(typeAttr))
return false;
if (thisInputElement->fastGetAttribute(readonlyAttr) != otherInputElement->fastGetAttribute(readonlyAttr))
return false;
}
if (thisInputElement->isAutofilled() != otherInputElement->isAutofilled())
return false;
if (thisInputElement->shouldAppearChecked() != otherInputElement->shouldAppearChecked())
return false;
if (thisInputElement->shouldAppearIndeterminate() != otherInputElement->shouldAppearIndeterminate())
return false;
if (thisInputElement->isRequired() != otherInputElement->isRequired())
return false;
if (element->isDisabledFormControl() != state.element()->isDisabledFormControl())
return false;
if (element->isDefaultButtonForForm() != state.element()->isDefaultButtonForForm())
return false;
if (state.document()->containsValidityStyleRules()) {
bool willValidate = element->willValidate();
if (willValidate != state.element()->willValidate())
return false;
if (willValidate && (element->isValidFormControlElement() != state.element()->isValidFormControlElement()))
return false;
if (element->isInRange() != state.element()->isInRange())
return false;
if (element->isOutOfRange() != state.element()->isOutOfRange())
return false;
}
return true;
}
static inline bool elementHasDirectionAuto(Element* element)
{
// FIXME: This line is surprisingly hot, we may wish to inline hasDirectionAuto into StyleResolver.
return element->isHTMLElement() && toHTMLElement(element)->hasDirectionAuto();
}
bool StyleResolver::sharingCandidateHasIdenticalStyleAffectingAttributes(StyledElement* sharingCandidate) const
{
const StyleResolverState& state = m_state;
if (state.element()->elementData() == sharingCandidate->elementData())
return true;
if (state.element()->fastGetAttribute(XMLNames::langAttr) != sharingCandidate->fastGetAttribute(XMLNames::langAttr))
return false;
if (state.element()->fastGetAttribute(langAttr) != sharingCandidate->fastGetAttribute(langAttr))
return false;
if (!state.elementAffectedByClassRules()) {
if (sharingCandidate->hasClass() && classNamesAffectedByRules(sharingCandidate->classNames()))
return false;
} else if (sharingCandidate->hasClass()) {
// SVG elements require a (slow!) getAttribute comparision because "class" is an animatable attribute for SVG.
if (state.element()->isSVGElement()) {
if (state.element()->getAttribute(classAttr) != sharingCandidate->getAttribute(classAttr))
return false;
} else if (state.element()->classNames() != sharingCandidate->classNames()) {
return false;
}
} else {
return false;
}
if (state.styledElement()->presentationAttributeStyle() != sharingCandidate->presentationAttributeStyle())
return false;
if (state.element()->hasTagName(progressTag)) {
if (state.element()->shouldAppearIndeterminate() != sharingCandidate->shouldAppearIndeterminate())
return false;
}
return true;
}
bool StyleResolver::canShareStyleWithElement(StyledElement* element) const
{
RenderStyle* style = element->renderStyle();
const StyleResolverState& state = m_state;
if (!style)
return false;
if (style->unique())
return false;
if (style->hasUniquePseudoStyle())
return false;
if (element->tagQName() != state.element()->tagQName())
return false;
if (element->inlineStyle())
return false;
if (element->needsStyleRecalc())
return false;
if (element->isSVGElement() && toSVGElement(element)->animatedSMILStyleProperties())
return false;
if (element->isLink() != state.element()->isLink())
return false;
if (element->hovered() != state.element()->hovered())
return false;
if (element->active() != state.element()->active())
return false;
if (element->focused() != state.element()->focused())
return false;
if (element->shadowPseudoId() != state.element()->shadowPseudoId())
return false;
if (element == element->document()->cssTarget())
return false;
if (!sharingCandidateHasIdenticalStyleAffectingAttributes(element))
return false;
if (element->additionalPresentationAttributeStyle() != state.styledElement()->additionalPresentationAttributeStyle())
return false;
if (element->hasID() && m_features.idsInRules.contains(element->idForStyleResolution().impl()))
return false;
if (element->hasScopedHTMLStyleChild())
return false;
// FIXME: We should share style for option and optgroup whenever possible.
// Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
// and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
if (element->hasTagName(optionTag) || element->hasTagName(optgroupTag))
return false;
bool isControl = element->isFormControlElement();
if (isControl != state.element()->isFormControlElement())
return false;
if (isControl && !canShareStyleWithControl(element))
return false;
if (style->transitions() || style->animations())
return false;
// Turn off style sharing for elements that can gain layers for reasons outside of the style system.
// See comments in RenderObject::setStyle().
if (element->hasTagName(iframeTag) || element->hasTagName(frameTag) || element->hasTagName(embedTag) || element->hasTagName(objectTag) || element->hasTagName(appletTag) || element->hasTagName(canvasTag))
return false;
if (elementHasDirectionAuto(element))
return false;
if (element->isLink() && state.elementLinkState() != style->insideLink())
return false;
if (element->isUnresolvedCustomElement() != state.element()->isUnresolvedCustomElement())
return false;
// Deny sharing styles between WebVTT and non-WebVTT nodes.
if (element->isWebVTTElement() != state.element()->isWebVTTElement())
return false;
if (element->isWebVTTElement() && state.element()->isWebVTTElement() && toWebVTTElement(element)->isPastNode() != toWebVTTElement(state.element())->isPastNode())
return false;
if (element == element->document()->webkitCurrentFullScreenElement() || state.element() == state.document()->webkitCurrentFullScreenElement())
return false;
return true;
}
inline StyledElement* StyleResolver::findSiblingForStyleSharing(Node* node, unsigned& count) const
{
for (; node; node = node->previousSibling()) {
if (!node->isStyledElement())
continue;
if (canShareStyleWithElement(static_cast<StyledElement*>(node)))
break;
if (count++ == cStyleSearchThreshold)
return 0;
}
return static_cast<StyledElement*>(node);
}
RenderStyle* StyleResolver::locateSharedStyle()
{
StyleResolverState& state = m_state;
if (!state.styledElement() || !state.parentStyle())
return 0;
// If the element has inline style it is probably unique.
if (state.styledElement()->inlineStyle())
return 0;
if (state.styledElement()->isSVGElement() && toSVGElement(state.styledElement())->animatedSMILStyleProperties())
return 0;
// Ids stop style sharing if they show up in the stylesheets.
if (state.styledElement()->hasID() && m_features.idsInRules.contains(state.styledElement()->idForStyleResolution().impl()))
return 0;
if (parentElementPreventsSharing(state.element()->parentElement()))
return 0;
if (state.styledElement()->hasScopedHTMLStyleChild())
return 0;
if (state.element() == state.document()->cssTarget())
return 0;
if (elementHasDirectionAuto(state.element()))
return 0;
if (state.element()->hasActiveAnimations())
return 0;
// Cache whether state.element is affected by any known class selectors.
// FIXME: This shouldn't be a member variable. The style sharing code could be factored out of StyleResolver.
state.setElementAffectedByClassRules(state.element() && state.element()->hasClass() && classNamesAffectedByRules(state.element()->classNames()));
// Check previous siblings and their cousins.
unsigned count = 0;
unsigned visitedNodeCount = 0;
StyledElement* shareElement = 0;
Node* cousinList = state.styledElement()->previousSibling();
while (cousinList) {
shareElement = findSiblingForStyleSharing(cousinList, count);
if (shareElement)
break;
cousinList = locateCousinList(cousinList->parentElement(), visitedNodeCount);
}
// If we have exhausted all our budget or our cousins.
if (!shareElement)
return 0;
// Can't share if sibling rules apply. This is checked at the end as it should rarely fail.
if (styleSharingCandidateMatchesRuleSet(m_siblingRuleSet.get()))
return 0;
// Can't share if attribute rules apply.
if (styleSharingCandidateMatchesRuleSet(m_uncommonAttributeRuleSet.get()))
return 0;
// Tracking child index requires unique style for each node. This may get set by the sibling rule match above.
if (parentElementPreventsSharing(state.element()->parentElement()))
return 0;
return shareElement->renderStyle();
}
static void setStylesForPaginationMode(Pagination::Mode paginationMode, RenderStyle* style)
{
if (paginationMode == Pagination::Unpaginated)
return;
switch (paginationMode) {
case Pagination::LeftToRightPaginated:
style->setColumnAxis(HorizontalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isLeftToRightDirection() ? NormalColumnProgression : ReverseColumnProgression);
else
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? ReverseColumnProgression : NormalColumnProgression);
break;
case Pagination::RightToLeftPaginated:
style->setColumnAxis(HorizontalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isLeftToRightDirection() ? ReverseColumnProgression : NormalColumnProgression);
else
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? NormalColumnProgression : ReverseColumnProgression);
break;
case Pagination::TopToBottomPaginated:
style->setColumnAxis(VerticalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? ReverseColumnProgression : NormalColumnProgression);
else
style->setColumnProgression(style->isLeftToRightDirection() ? NormalColumnProgression : ReverseColumnProgression);
break;
case Pagination::BottomToTopPaginated:
style->setColumnAxis(VerticalColumnAxis);
if (style->isHorizontalWritingMode())
style->setColumnProgression(style->isFlippedBlocksWritingMode() ? NormalColumnProgression : ReverseColumnProgression);
else
style->setColumnProgression(style->isLeftToRightDirection() ? ReverseColumnProgression : NormalColumnProgression);
break;
case Pagination::Unpaginated:
ASSERT_NOT_REACHED();
break;
}
}
static void getFontAndGlyphOrientation(const RenderStyle* style, FontOrientation& fontOrientation, NonCJKGlyphOrientation& glyphOrientation)
{
if (style->isHorizontalWritingMode()) {
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
}
switch (style->textOrientation()) {
case TextOrientationVerticalRight:
fontOrientation = Vertical;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
case TextOrientationUpright:
fontOrientation = Vertical;
glyphOrientation = NonCJKGlyphOrientationUpright;
return;
case TextOrientationSideways:
if (style->writingMode() == LeftToRightWritingMode) {
// FIXME: This should map to sideways-left, which is not supported yet.
fontOrientation = Vertical;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
}
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
case TextOrientationSidewaysRight:
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
default:
ASSERT_NOT_REACHED();
fontOrientation = Horizontal;
glyphOrientation = NonCJKGlyphOrientationVerticalRight;
return;
}
}
PassRefPtr<RenderStyle> StyleResolver::styleForDocument(Document* document, CSSFontSelector* fontSelector)
{
Frame* frame = document->frame();
// HTML5 states that seamless iframes should replace default CSS values
// with values inherited from the containing iframe element. However,
// some values (such as the case of designMode = "on") still need to
// be set by this "document style".
RefPtr<RenderStyle> documentStyle = RenderStyle::create();
bool seamlessWithParent = document->shouldDisplaySeamlesslyWithParent();
if (seamlessWithParent) {
RenderStyle* iframeStyle = document->seamlessParentIFrame()->renderStyle();
if (iframeStyle)
documentStyle->inheritFrom(iframeStyle);
}
// FIXME: It's not clear which values below we want to override in the seamless case!
documentStyle->setDisplay(BLOCK);
if (!seamlessWithParent) {
documentStyle->setRTLOrdering(document->visuallyOrdered() ? VisualOrder : LogicalOrder);
documentStyle->setZoom(frame && !document->printing() ? frame->pageZoomFactor() : 1);
documentStyle->setLocale(document->contentLanguage());
}
// This overrides any -webkit-user-modify inherited from the parent iframe.
documentStyle->setUserModify(document->inDesignMode() ? READ_WRITE : READ_ONLY);
Element* docElement = document->documentElement();
RenderObject* docElementRenderer = docElement ? docElement->renderer() : 0;
if (docElementRenderer) {
// Use the direction and writing-mode of the body to set the
// viewport's direction and writing-mode unless the property is set on the document element.
// If there is no body, then use the document element.
RenderObject* bodyRenderer = document->body() ? document->body()->renderer() : 0;
if (bodyRenderer && !document->writingModeSetOnDocumentElement())
documentStyle->setWritingMode(bodyRenderer->style()->writingMode());
else
documentStyle->setWritingMode(docElementRenderer->style()->writingMode());
if (bodyRenderer && !document->directionSetOnDocumentElement())
documentStyle->setDirection(bodyRenderer->style()->direction());
else
documentStyle->setDirection(docElementRenderer->style()->direction());
}
if (frame) {
if (FrameView* frameView = frame->view()) {
const Pagination& pagination = frameView->pagination();
if (pagination.mode != Pagination::Unpaginated) {
setStylesForPaginationMode(pagination.mode, documentStyle.get());
documentStyle->setColumnGap(pagination.gap);
if (RenderView* view = document->renderView()) {
if (view->hasColumns())
view->updateColumnInfoFromStyle(documentStyle.get());
}
}
}
}
// Seamless iframes want to inherit their font from their parent iframe, so early return before setting the font.
if (seamlessWithParent)
return documentStyle.release();
FontDescription fontDescription;
fontDescription.setScript(localeToScriptCodeForFontSelection(documentStyle->locale()));
if (Settings* settings = document->settings()) {
fontDescription.setUsePrinterFont(document->printing());
fontDescription.setRenderingMode(settings->fontRenderingMode());
const AtomicString& standardFont = settings->standardFontFamily(fontDescription.script());
if (!standardFont.isEmpty()) {
fontDescription.setGenericFamily(FontDescription::StandardFamily);
fontDescription.firstFamily().setFamily(standardFont);
fontDescription.firstFamily().appendFamily(0);
}
fontDescription.setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
int size = StyleResolver::fontSizeForKeyword(document, CSSValueMedium, false);
fontDescription.setSpecifiedSize(size);
bool useSVGZoomRules = document->isSVGDocument();
fontDescription.setComputedSize(StyleResolver::getComputedSizeFromSpecifiedSize(document, documentStyle.get(), fontDescription.isAbsoluteSize(), size, useSVGZoomRules));
} else
fontDescription.setUsePrinterFont(document->printing());
FontOrientation fontOrientation;
NonCJKGlyphOrientation glyphOrientation;
getFontAndGlyphOrientation(documentStyle.get(), fontOrientation, glyphOrientation);
fontDescription.setOrientation(fontOrientation);
fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
documentStyle->setFontDescription(fontDescription);
documentStyle->font().update(fontSelector);
return documentStyle.release();
}
static inline bool isAtShadowBoundary(const Element* element)
{
if (!element)
return false;
ContainerNode* parentNode = element->parentNode();
return parentNode && parentNode->isShadowRoot();
}
PassRefPtr<RenderStyle> StyleResolver::styleForElement(Element* element, RenderStyle* defaultParent,
StyleSharingBehavior sharingBehavior, RuleMatchingBehavior matchingBehavior, RenderRegion* regionForStyling)
{
// Once an element has a renderer, we don't try to destroy it, since otherwise the renderer
// will vanish if a style recalc happens during loading.
if (sharingBehavior == AllowStyleSharing && !element->document()->haveStylesheetsLoaded() && !element->renderer()) {
if (!s_styleNotYetAvailable) {
s_styleNotYetAvailable = RenderStyle::create().leakRef();
s_styleNotYetAvailable->setDisplay(NONE);
s_styleNotYetAvailable->font().update(m_fontSelector);
}
element->document()->setHasNodesWithPlaceholderStyle();
return s_styleNotYetAvailable;
}
StyleResolverState& state = m_state;
initElement(element);
state.initForStyleResolve(document(), element, defaultParent, regionForStyling);
if (sharingBehavior == AllowStyleSharing && !state.distributedToInsertionPoint()) {
RenderStyle* sharedStyle = locateSharedStyle();
if (sharedStyle) {
state.clear();
return sharedStyle;
}
}
if (state.parentStyle()) {
state.setStyle(RenderStyle::create());
state.style()->inheritFrom(state.parentStyle(), isAtShadowBoundary(element) ? RenderStyle::AtShadowBoundary : RenderStyle::NotAtShadowBoundary);
} else {
state.setStyle(defaultStyleForElement());
state.setParentStyle(RenderStyle::clone(state.style()));
}
// contenteditable attribute (implemented by -webkit-user-modify) should
// be propagated from shadow host to distributed node.
if (state.distributedToInsertionPoint()) {
if (Element* parent = element->parentElement()) {
if (RenderStyle* styleOfShadowHost = parent->renderStyle())
state.style()->setUserModify(styleOfShadowHost->userModify());
}
}
if (element->isLink()) {
state.style()->setIsLink(true);
EInsideLink linkState = state.elementLinkState();
if (linkState != NotInsideLink) {
bool forceVisited = InspectorInstrumentation::forcePseudoState(element, CSSSelector::PseudoVisited);
if (forceVisited)
linkState = InsideVisitedLink;
}
state.style()->setInsideLink(linkState);
}
bool needsCollection = false;
CSSDefaultStyleSheets::ensureDefaultStyleSheetsForElement(element, needsCollection);
if (needsCollection) {
collectFeatures();
m_inspectorCSSOMWrappers.reset();
}
ElementRuleCollector collector(this, state);
collector.setRegionForStyling(regionForStyling);
if (matchingBehavior == MatchOnlyUserAgentRules)
matchUARules(collector);
else
matchAllRules(collector, m_matchAuthorAndUserStyles, matchingBehavior != MatchAllRulesExcludingSMIL);
applyMatchedProperties(collector.matchedResult(), element);
// Clean up our style object's display and text decorations (among other fixups).
adjustRenderStyle(state.style(), state.parentStyle(), element);
state.clear(); // Clear out for the next resolve.
document()->didAccessStyleResolver();
// Now return the style.
return state.takeStyle();
}
PassRefPtr<RenderStyle> StyleResolver::styleForKeyframe(const RenderStyle* elementStyle, const StyleKeyframe* keyframe, KeyframeValue& keyframeValue)
{
MatchResult result;
if (keyframe->properties())
result.addMatchedProperties(keyframe->properties());
ASSERT(!m_state.style());
StyleResolverState& state = m_state;
// Create the style
state.setStyle(RenderStyle::clone(elementStyle));
state.setLineHeightValue(0);
// We don't need to bother with !important. Since there is only ever one
// decl, there's nothing to override. So just add the first properties.
bool inheritedOnly = false;
if (keyframe->properties())
applyMatchedProperties<HighPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// If our font got dirtied, go ahead and update it now.
updateFont();
// Line-height is set when we are sure we decided on the font-size
if (state.lineHeightValue())
applyProperty(CSSPropertyLineHeight, state.lineHeightValue());
// Now do rest of the properties.
if (keyframe->properties())
applyMatchedProperties<LowPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// If our font got dirtied by one of the non-essential font props,
// go ahead and update it a second time.
updateFont();
// Start loading resources referenced by this style.
loadPendingResources();
// Add all the animating properties to the keyframe.
if (const StylePropertySet* styleDeclaration = keyframe->properties()) {
unsigned propertyCount = styleDeclaration->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
CSSPropertyID property = styleDeclaration->propertyAt(i).id();
// Timing-function within keyframes is special, because it is not animated; it just
// describes the timing function between this keyframe and the next.
if (property != CSSPropertyWebkitAnimationTimingFunction)
keyframeValue.addProperty(property);
}
}
document()->didAccessStyleResolver();
return state.takeStyle();
}
void StyleResolver::keyframeStylesForAnimation(Element* e, const RenderStyle* elementStyle, KeyframeList& list)
{
list.clear();
// Get the keyframesRule for this name
if (!e || list.animationName().isEmpty())
return;
m_keyframesRuleMap.checkConsistency();
KeyframesRuleMap::iterator it = m_keyframesRuleMap.find(list.animationName().impl());
if (it == m_keyframesRuleMap.end())
return;
const StyleRuleKeyframes* keyframesRule = it->value.get();
// Construct and populate the style for each keyframe
const Vector<RefPtr<StyleKeyframe> >& keyframes = keyframesRule->keyframes();
for (unsigned i = 0; i < keyframes.size(); ++i) {
// Apply the declaration to the style. This is a simplified version of the logic in styleForElement
initElement(e);
m_state.initForStyleResolve(document(), e);
const StyleKeyframe* keyframe = keyframes[i].get();
KeyframeValue keyframeValue(0, 0);
keyframeValue.setStyle(styleForKeyframe(elementStyle, keyframe, keyframeValue));
// Add this keyframe style to all the indicated key times
Vector<float> keys;
keyframe->getKeys(keys);
for (size_t keyIndex = 0; keyIndex < keys.size(); ++keyIndex) {
keyframeValue.setKey(keys[keyIndex]);
list.insert(keyframeValue);
}
}
// If the 0% keyframe is missing, create it (but only if there is at least one other keyframe)
int initialListSize = list.size();
if (initialListSize > 0 && list[0].key()) {
static StyleKeyframe* zeroPercentKeyframe;
if (!zeroPercentKeyframe) {
zeroPercentKeyframe = StyleKeyframe::create().leakRef();
zeroPercentKeyframe->setKeyText("0%");
}
KeyframeValue keyframeValue(0, 0);
keyframeValue.setStyle(styleForKeyframe(elementStyle, zeroPercentKeyframe, keyframeValue));
list.insert(keyframeValue);
}
// If the 100% keyframe is missing, create it (but only if there is at least one other keyframe)
if (initialListSize > 0 && (list[list.size() - 1].key() != 1)) {
static StyleKeyframe* hundredPercentKeyframe;
if (!hundredPercentKeyframe) {
hundredPercentKeyframe = StyleKeyframe::create().leakRef();
hundredPercentKeyframe->setKeyText("100%");
}
KeyframeValue keyframeValue(1, 0);
keyframeValue.setStyle(styleForKeyframe(elementStyle, hundredPercentKeyframe, keyframeValue));
list.insert(keyframeValue);
}
}
PassRefPtr<RenderStyle> StyleResolver::pseudoStyleForElement(Element* e, const PseudoStyleRequest& pseudoStyleRequest, RenderStyle* parentStyle)
{
ASSERT(parentStyle);
if (!e)
return 0;
StyleResolverState& state = m_state;
initElement(e);
state.initForStyleResolve(document(), e, parentStyle);
if (m_state.parentStyle()) {
state.setStyle(RenderStyle::create());
state.style()->inheritFrom(m_state.parentStyle());
} else {
state.setStyle(defaultStyleForElement());
state.setParentStyle(RenderStyle::clone(state.style()));
}
// Since we don't use pseudo-elements in any of our quirk/print user agent rules, don't waste time walking
// those rules.
// Check UA, user and author rules.
ElementRuleCollector collector(this, state);
collector.setPseudoStyleRequest(pseudoStyleRequest);
matchUARules(collector);
if (m_matchAuthorAndUserStyles) {
matchUserRules(collector, false);
matchAuthorRules(collector, false);
}
if (collector.matchedResult().matchedProperties.isEmpty())
return 0;
state.style()->setStyleType(pseudoStyleRequest.pseudoId);
applyMatchedProperties(collector.matchedResult(), e);
// Clean up our style object's display and text decorations (among other fixups).
adjustRenderStyle(state.style(), m_state.parentStyle(), 0);
// Start loading resources referenced by this style.
loadPendingResources();
document()->didAccessStyleResolver();
// Now return the style.
return state.takeStyle();
}
PassRefPtr<RenderStyle> StyleResolver::styleForPage(int pageIndex)
{
m_state.initForStyleResolve(document(), document()->documentElement()); // m_rootElementStyle will be set to the document style.
m_state.setStyle(RenderStyle::create());
m_state.style()->inheritFrom(m_state.rootElementStyle());
PageRuleCollector collector(m_state, pageIndex);
collector.matchPageRules(CSSDefaultStyleSheets::defaultPrintStyle);
collector.matchPageRules(m_ruleSets.userStyle());
if (ScopedStyleResolver* scopeResolver = m_styleTree.scopedStyleResolverForDocument())
scopeResolver->matchPageRules(collector);
m_state.setLineHeightValue(0);
bool inheritedOnly = false;
MatchResult& result = collector.matchedResult();
applyMatchedProperties<VariableDefinitions>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
applyMatchedProperties<HighPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// If our font got dirtied, go ahead and update it now.
updateFont();
// Line-height is set when we are sure we decided on the font-size.
if (m_state.lineHeightValue())
applyProperty(CSSPropertyLineHeight, m_state.lineHeightValue());
applyMatchedProperties<LowPriorityProperties>(result, false, 0, result.matchedProperties.size() - 1, inheritedOnly);
// Start loading resources referenced by this style.
loadPendingResources();
document()->didAccessStyleResolver();
// Now return the style.
return m_state.takeStyle();
}
PassRefPtr<RenderStyle> StyleResolver::defaultStyleForElement()
{
m_state.setStyle(RenderStyle::create());
// Make sure our fonts are initialized if we don't inherit them from our parent style.
if (Settings* settings = documentSettings()) {
initializeFontStyle(settings);
m_state.style()->font().update(fontSelector());
} else
m_state.style()->font().update(0);
return m_state.takeStyle();
}
PassRefPtr<RenderStyle> StyleResolver::styleForText(Text* textNode)
{
ASSERT(textNode);
NodeRenderingContext context(textNode);
Node* parentNode = context.parentNodeForRenderingAndStyle();
return context.resetStyleInheritance() || !parentNode || !parentNode->renderStyle() ?
defaultStyleForElement() : parentNode->renderStyle();
}
static void addIntrinsicMargins(RenderStyle* style)
{
// Intrinsic margin value.
const int intrinsicMargin = 2 * style->effectiveZoom();
// FIXME: Using width/height alone and not also dealing with min-width/max-width is flawed.
// FIXME: Using "quirk" to decide the margin wasn't set is kind of lame.
if (style->width().isIntrinsicOrAuto()) {
if (style->marginLeft().quirk())
style->setMarginLeft(Length(intrinsicMargin, Fixed));
if (style->marginRight().quirk())
style->setMarginRight(Length(intrinsicMargin, Fixed));
}
if (style->height().isAuto()) {
if (style->marginTop().quirk())
style->setMarginTop(Length(intrinsicMargin, Fixed));
if (style->marginBottom().quirk())
style->setMarginBottom(Length(intrinsicMargin, Fixed));
}
}
static EDisplay equivalentBlockDisplay(EDisplay display, bool isFloating, bool strictParsing)
{
switch (display) {
case BLOCK:
case TABLE:
case BOX:
case FLEX:
case GRID:
case LAZY_BLOCK:
return display;
case LIST_ITEM:
// It is a WinIE bug that floated list items lose their bullets, so we'll emulate the quirk, but only in quirks mode.
if (!strictParsing && isFloating)
return BLOCK;
return display;
case INLINE_TABLE:
return TABLE;
case INLINE_BOX:
return BOX;
case INLINE_FLEX:
return FLEX;
case INLINE_GRID:
return GRID;
case INLINE:
case RUN_IN:
case COMPACT:
case INLINE_BLOCK:
case TABLE_ROW_GROUP:
case TABLE_HEADER_GROUP:
case TABLE_FOOTER_GROUP:
case TABLE_ROW:
case TABLE_COLUMN_GROUP:
case TABLE_COLUMN:
case TABLE_CELL:
case TABLE_CAPTION:
return BLOCK;
case NONE:
ASSERT_NOT_REACHED();
return NONE;
}
ASSERT_NOT_REACHED();
return BLOCK;
}
// CSS requires text-decoration to be reset at each DOM element for tables,
// inline blocks, inline tables, run-ins, shadow DOM crossings, floating elements,
// and absolute or relatively positioned elements.
static bool doesNotInheritTextDecoration(RenderStyle* style, Element* e)
{
return style->display() == TABLE || style->display() == INLINE_TABLE || style->display() == RUN_IN
|| style->display() == INLINE_BLOCK || style->display() == INLINE_BOX || isAtShadowBoundary(e)
|| style->isFloating() || style->hasOutOfFlowPosition();
}
static bool isDisplayFlexibleBox(EDisplay display)
{
return display == FLEX || display == INLINE_FLEX;
}
static bool isDisplayGridBox(EDisplay display)
{
return display == GRID || display == INLINE_GRID;
}
void StyleResolver::adjustRenderStyle(RenderStyle* style, RenderStyle* parentStyle, Element *e)
{
ASSERT(parentStyle);
// Cache our original display.
style->setOriginalDisplay(style->display());
if (style->display() != NONE) {
// If we have a <td> that specifies a float property, in quirks mode we just drop the float
// property.
// Sites also commonly use display:inline/block on <td>s and <table>s. In quirks mode we force
// these tags to retain their display types.
if (document()->inQuirksMode() && e) {
if (e->hasTagName(tdTag)) {
style->setDisplay(TABLE_CELL);
style->setFloating(NoFloat);
} else if (e->hasTagName(tableTag))
style->setDisplay(style->isDisplayInlineType() ? INLINE_TABLE : TABLE);
}
if (e && (e->hasTagName(tdTag) || e->hasTagName(thTag))) {
if (style->whiteSpace() == KHTML_NOWRAP) {
// Figure out if we are really nowrapping or if we should just
// use normal instead. If the width of the cell is fixed, then
// we don't actually use NOWRAP.
if (style->width().isFixed())
style->setWhiteSpace(NORMAL);
else
style->setWhiteSpace(NOWRAP);
}
}
// Tables never support the -webkit-* values for text-align and will reset back to the default.
if (e && e->hasTagName(tableTag) && (style->textAlign() == WEBKIT_LEFT || style->textAlign() == WEBKIT_CENTER || style->textAlign() == WEBKIT_RIGHT))
style->setTextAlign(TASTART);
// Frames and framesets never honor position:relative or position:absolute. This is necessary to
// fix a crash where a site tries to position these objects. They also never honor display.
if (e && (e->hasTagName(frameTag) || e->hasTagName(framesetTag))) {
style->setPosition(StaticPosition);
style->setDisplay(BLOCK);
}
// Ruby text does not support float or position. This might change with evolution of the specification.
if (e && e->hasTagName(rtTag)) {
style->setPosition(StaticPosition);
style->setFloating(NoFloat);
}
// FIXME: We shouldn't be overriding start/-webkit-auto like this. Do it in html.css instead.
// Table headers with a text-align of -webkit-auto will change the text-align to center.
if (e && e->hasTagName(thTag) && style->textAlign() == TASTART)
style->setTextAlign(CENTER);
if (e && e->hasTagName(legendTag))
style->setDisplay(BLOCK);
// Absolute/fixed positioned elements, floating elements and the document element need block-like outside display.
if (style->hasOutOfFlowPosition() || style->isFloating() || (e && e->document()->documentElement() == e))
style->setDisplay(equivalentBlockDisplay(style->display(), style->isFloating(), !document()->inQuirksMode()));
// FIXME: Don't support this mutation for pseudo styles like first-letter or first-line, since it's not completely
// clear how that should work.
if (style->display() == INLINE && style->styleType() == NOPSEUDO && style->writingMode() != parentStyle->writingMode())
style->setDisplay(INLINE_BLOCK);
// After performing the display mutation, check table rows. We do not honor position:relative or position:sticky on
// table rows or cells. This has been established for position:relative in CSS2.1 (and caused a crash in containingBlock()
// on some sites).
if ((style->display() == TABLE_HEADER_GROUP || style->display() == TABLE_ROW_GROUP
|| style->display() == TABLE_FOOTER_GROUP || style->display() == TABLE_ROW)
&& style->hasInFlowPosition())
style->setPosition(StaticPosition);
// writing-mode does not apply to table row groups, table column groups, table rows, and table columns.
// FIXME: Table cells should be allowed to be perpendicular or flipped with respect to the table, though.
if (style->display() == TABLE_COLUMN || style->display() == TABLE_COLUMN_GROUP || style->display() == TABLE_FOOTER_GROUP
|| style->display() == TABLE_HEADER_GROUP || style->display() == TABLE_ROW || style->display() == TABLE_ROW_GROUP
|| style->display() == TABLE_CELL)
style->setWritingMode(parentStyle->writingMode());
// FIXME: Since we don't support block-flow on flexible boxes yet, disallow setting
// of block-flow to anything other than TopToBottomWritingMode.
// https://bugs.webkit.org/show_bug.cgi?id=46418 - Flexible box support.
if (style->writingMode() != TopToBottomWritingMode && (style->display() == BOX || style->display() == INLINE_BOX))
style->setWritingMode(TopToBottomWritingMode);
if (isDisplayFlexibleBox(parentStyle->display()) || isDisplayGridBox(parentStyle->display())) {
style->setFloating(NoFloat);
style->setDisplay(equivalentBlockDisplay(style->display(), style->isFloating(), !document()->inQuirksMode()));
}
// Per the spec, position 'static' and 'relative' in the top layer compute to 'absolute'.
if (e && e->isInTopLayer() && (style->position() == StaticPosition || style->position() == RelativePosition)) {
style->setPosition(AbsolutePosition);
style->setDisplay(BLOCK);
}
}
// Make sure our z-index value is only applied if the object is positioned.
if (style->position() == StaticPosition && !isDisplayFlexibleBox(parentStyle->display()))
style->setHasAutoZIndex();
// Auto z-index becomes 0 for the root element and transparent objects. This prevents
// cases where objects that should be blended as a single unit end up with a non-transparent
// object wedged in between them. Auto z-index also becomes 0 for objects that specify transforms/masks/reflections.
if (style->hasAutoZIndex() && ((e && e->document()->documentElement() == e)
|| style->opacity() < 1.0f
|| style->hasTransformRelatedProperty()
|| style->hasMask()
|| style->clipPath()
|| style->boxReflect()
|| style->hasFilter()
|| style->hasBlendMode()
|| style->position() == StickyPosition
|| (style->position() == FixedPosition && e && e->document()->page() && e->document()->page()->settings()->fixedPositionCreatesStackingContext())
#if ENABLE(ACCELERATED_OVERFLOW_SCROLLING)
// Touch overflow scrolling creates a stacking context.
|| ((style->overflowX() != OHIDDEN || style->overflowY() != OHIDDEN) && style->useTouchOverflowScrolling())
#endif
|| (e && e->isInTopLayer())
))
style->setZIndex(0);
// Textarea considers overflow visible as auto.
if (e && e->hasTagName(textareaTag)) {
style->setOverflowX(style->overflowX() == OVISIBLE ? OAUTO : style->overflowX());
style->setOverflowY(style->overflowY() == OVISIBLE ? OAUTO : style->overflowY());
}
if (doesNotInheritTextDecoration(style, e))
style->setTextDecorationsInEffect(style->textDecoration());
else
style->addToTextDecorationsInEffect(style->textDecoration());
// If either overflow value is not visible, change to auto.
if (style->overflowX() == OMARQUEE && style->overflowY() != OMARQUEE)
style->setOverflowY(OMARQUEE);
else if (style->overflowY() == OMARQUEE && style->overflowX() != OMARQUEE)
style->setOverflowX(OMARQUEE);
else if (style->overflowX() == OVISIBLE && style->overflowY() != OVISIBLE) {
// FIXME: Once we implement pagination controls, overflow-x should default to hidden
// if overflow-y is set to -webkit-paged-x or -webkit-page-y. For now, we'll let it
// default to auto so we can at least scroll through the pages.
style->setOverflowX(OAUTO);
} else if (style->overflowY() == OVISIBLE && style->overflowX() != OVISIBLE)
style->setOverflowY(OAUTO);
// Call setStylesForPaginationMode() if a pagination mode is set for any non-root elements. If these
// styles are specified on a root element, then they will be incorporated in
// StyleResolver::styleForDocument().
if ((style->overflowY() == OPAGEDX || style->overflowY() == OPAGEDY) && !(e && (e->hasTagName(htmlTag) || e->hasTagName(bodyTag))))
setStylesForPaginationMode(WebCore::paginationModeForRenderStyle(style), style);
// Table rows, sections and the table itself will support overflow:hidden and will ignore scroll/auto.
// FIXME: Eventually table sections will support auto and scroll.
if (style->display() == TABLE || style->display() == INLINE_TABLE
|| style->display() == TABLE_ROW_GROUP || style->display() == TABLE_ROW) {
if (style->overflowX() != OVISIBLE && style->overflowX() != OHIDDEN)
style->setOverflowX(OVISIBLE);
if (style->overflowY() != OVISIBLE && style->overflowY() != OHIDDEN)
style->setOverflowY(OVISIBLE);
}
// Menulists should have visible overflow
if (style->appearance() == MenulistPart) {
style->setOverflowX(OVISIBLE);
style->setOverflowY(OVISIBLE);
}
// Cull out any useless layers and also repeat patterns into additional layers.
style->adjustBackgroundLayers();
style->adjustMaskLayers();
// Do the same for animations and transitions.
style->adjustAnimations();
style->adjustTransitions();
// Important: Intrinsic margins get added to controls before the theme has adjusted the style, since the theme will
// alter fonts and heights/widths.
if (e && e->isFormControlElement() && style->fontSize() >= 11) {
// Don't apply intrinsic margins to image buttons. The designer knows how big the images are,
// so we have to treat all image buttons as though they were explicitly sized.
if (!e->hasTagName(inputTag) || !static_cast<HTMLInputElement*>(e)->isImageButton())
addIntrinsicMargins(style);
}
// Let the theme also have a crack at adjusting the style.
if (style->hasAppearance())
RenderTheme::defaultTheme()->adjustStyle(this, style, e, m_state.hasUAAppearance(), m_state.borderData(), m_state.backgroundData(), m_state.backgroundColor());
// If we have first-letter pseudo style, do not share this style.
if (style->hasPseudoStyle(FIRST_LETTER))
style->setUnique();
// FIXME: when dropping the -webkit prefix on transform-style, we should also have opacity < 1 cause flattening.
if (style->preserves3D() && (style->overflowX() != OVISIBLE
|| style->overflowY() != OVISIBLE
|| style->hasFilter()))
style->setTransformStyle3D(TransformStyle3DFlat);
// Seamless iframes behave like blocks. Map their display to inline-block when marked inline.
if (e && e->hasTagName(iframeTag) && style->display() == INLINE && static_cast<HTMLIFrameElement*>(e)->shouldDisplaySeamlessly())
style->setDisplay(INLINE_BLOCK);
adjustGridItemPosition(style);
if (e && e->isSVGElement()) {
// Spec: http://www.w3.org/TR/SVG/masking.html#OverflowProperty
if (style->overflowY() == OSCROLL)
style->setOverflowY(OHIDDEN);
else if (style->overflowY() == OAUTO)
style->setOverflowY(OVISIBLE);
if (style->overflowX() == OSCROLL)
style->setOverflowX(OHIDDEN);
else if (style->overflowX() == OAUTO)
style->setOverflowX(OVISIBLE);
// Only the root <svg> element in an SVG document fragment tree honors css position
if (!(e->hasTagName(SVGNames::svgTag) && e->parentNode() && !e->parentNode()->isSVGElement()))
style->setPosition(RenderStyle::initialPosition());
// RenderSVGRoot handles zooming for the whole SVG subtree, so foreignObject content should
// not be scaled again.
if (e->hasTagName(SVGNames::foreignObjectTag))
style->setEffectiveZoom(RenderStyle::initialZoom());
}
}
void StyleResolver::adjustGridItemPosition(RenderStyle* style) const
{
// If opposing grid-placement properties both specify a grid span, they both compute to ‘auto’.
if (style->gridStart().isSpan() && style->gridEnd().isSpan()) {
style->setGridStart(GridPosition());
style->setGridEnd(GridPosition());
}
if (style->gridBefore().isSpan() && style->gridAfter().isSpan()) {
style->setGridBefore(GridPosition());
style->setGridAfter(GridPosition());
}
}
bool StyleResolver::checkRegionStyle(Element* regionElement)
{
// FIXME (BUG 72472): We don't add @-webkit-region rules of scoped style sheets for the moment,
// so all region rules are global by default. Verify whether that can stand or needs changing.
if (ScopedStyleResolver* scopeResolver = m_styleTree.scopedStyleResolverForDocument())
if (scopeResolver->checkRegionStyle(regionElement))
return true;
if (m_ruleSets.userStyle()) {
unsigned rulesSize = m_ruleSets.userStyle()->m_regionSelectorsAndRuleSets.size();
for (unsigned i = 0; i < rulesSize; ++i) {
ASSERT(m_ruleSets.userStyle()->m_regionSelectorsAndRuleSets.at(i).ruleSet.get());
if (checkRegionSelector(m_ruleSets.userStyle()->m_regionSelectorsAndRuleSets.at(i).selector, regionElement))
return true;
}
}
return false;
}
static void checkForOrientationChange(RenderStyle* style)
{
FontOrientation fontOrientation;
NonCJKGlyphOrientation glyphOrientation;
getFontAndGlyphOrientation(style, fontOrientation, glyphOrientation);
const FontDescription& fontDescription = style->fontDescription();
if (fontDescription.orientation() == fontOrientation && fontDescription.nonCJKGlyphOrientation() == glyphOrientation)
return;
FontDescription newFontDescription(fontDescription);
newFontDescription.setNonCJKGlyphOrientation(glyphOrientation);
newFontDescription.setOrientation(fontOrientation);
style->setFontDescription(newFontDescription);
}
void StyleResolver::updateFont()
{
if (!m_state.fontDirty())
return;
RenderStyle* style = m_state.style();
checkForGenericFamilyChange(style, m_state.parentStyle());
checkForZoomChange(style, m_state.parentStyle());
checkForOrientationChange(style);
style->font().update(m_fontSelector);
m_state.setFontDirty(false);
}
PassRefPtr<CSSRuleList> StyleResolver::styleRulesForElement(Element* e, unsigned rulesToInclude)
{
return pseudoStyleRulesForElement(e, NOPSEUDO, rulesToInclude);
}
PassRefPtr<CSSRuleList> StyleResolver::pseudoStyleRulesForElement(Element* e, PseudoId pseudoId, unsigned rulesToInclude)
{
if (!e || !e->document()->haveStylesheetsLoaded())
return 0;
initElement(e);
m_state.initForStyleResolve(document(), e, 0);
ElementRuleCollector collector(this, m_state);
collector.setMode(SelectorChecker::CollectingRules);
collector.setPseudoStyleRequest(PseudoStyleRequest(pseudoId));
if (rulesToInclude & UAAndUserCSSRules) {
// First we match rules from the user agent sheet.
matchUARules(collector);
// Now we check user sheet rules.
if (m_matchAuthorAndUserStyles)
matchUserRules(collector, rulesToInclude & EmptyCSSRules);
}
if (m_matchAuthorAndUserStyles && (rulesToInclude & AuthorCSSRules)) {
collector.setSameOriginOnly(!(rulesToInclude & CrossOriginCSSRules));
// Check the rules in author sheets.
matchAuthorRules(collector, rulesToInclude & EmptyCSSRules);
}
return collector.matchedRuleList();
}
// -------------------------------------------------------------------------------------
// this is mostly boring stuff on how to apply a certain rule to the renderstyle...
Length StyleResolver::convertToIntLength(CSSPrimitiveValue* primitiveValue, RenderStyle* style, RenderStyle* rootStyle, double multiplier)
{
return primitiveValue ? primitiveValue->convertToLength<FixedIntegerConversion | PercentConversion | CalculatedConversion | FractionConversion | ViewportPercentageConversion>(style, rootStyle, multiplier) : Length(Undefined);
}
Length StyleResolver::convertToFloatLength(CSSPrimitiveValue* primitiveValue, RenderStyle* style, RenderStyle* rootStyle, double multiplier)
{
return primitiveValue ? primitiveValue->convertToLength<FixedFloatConversion | PercentConversion | CalculatedConversion | FractionConversion | ViewportPercentageConversion>(style, rootStyle, multiplier) : Length(Undefined);
}
template <StyleResolver::StyleApplicationPass pass>
void StyleResolver::applyAnimatedProperties(const Element* target)
{
if (!target->hasActiveAnimations())
return;
Vector<Animation*>* animations = target->activeAnimations();
for (size_t i = 0; i < animations->size(); ++i) {
RefPtr<Animation> animation = animations->at(i);
const AnimationEffect::CompositableValueMap* compositableValues = animation->compositableValues();
for (AnimationEffect::CompositableValueMap::const_iterator iter = compositableValues->begin(); iter != compositableValues->end(); ++iter) {
CSSPropertyID property = iter->key;
// FIXME: Composite onto the underlying value.
RefPtr<CSSValue> value = iter->value->composite(AnimatableValue()).toCSSValue();
switch (pass) {
case VariableDefinitions:
ASSERT_NOT_REACHED();
continue;
case HighPriorityProperties:
if (property < CSSPropertyLineHeight)
applyProperty(property, value.get());
else if (property == CSSPropertyLineHeight)
m_state.setLineHeightValue(value.get());
continue;
case LowPriorityProperties:
if (property > CSSPropertyLineHeight)
applyProperty(property, value.get());
continue;
}
}
}
}
template <StyleResolver::StyleApplicationPass pass>
void StyleResolver::applyProperties(const StylePropertySet* properties, StyleRule* rule, bool isImportant, bool inheritedOnly, PropertyWhitelistType propertyWhitelistType)
{
ASSERT((propertyWhitelistType != PropertyWhitelistRegion) || m_state.regionForStyling());
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willProcessRule(document(), rule, this);
unsigned propertyCount = properties->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
StylePropertySet::PropertyReference current = properties->propertyAt(i);
if (isImportant != current.isImportant())
continue;
if (inheritedOnly && !current.isInherited()) {
// If the property value is explicitly inherited, we need to apply further non-inherited properties
// as they might override the value inherited here. For this reason we don't allow declarations with
// explicitly inherited properties to be cached.
ASSERT(!current.value()->isInheritedValue());
continue;
}
CSSPropertyID property = current.id();
if (propertyWhitelistType == PropertyWhitelistRegion && !StyleResolver::isValidRegionStyleProperty(property))
continue;
if (propertyWhitelistType == PropertyWhitelistCue && !StyleResolver::isValidCueStyleProperty(property))
continue;
switch (pass) {
case VariableDefinitions:
COMPILE_ASSERT(CSSPropertyVariable < firstCSSProperty, CSS_variable_is_before_first_property);
if (property == CSSPropertyVariable)
applyProperty(current.id(), current.value());
break;
case HighPriorityProperties:
COMPILE_ASSERT(firstCSSProperty == CSSPropertyColor, CSS_color_is_first_property);
COMPILE_ASSERT(CSSPropertyZoom == CSSPropertyColor + 17, CSS_zoom_is_end_of_first_prop_range);
COMPILE_ASSERT(CSSPropertyLineHeight == CSSPropertyZoom + 1, CSS_line_height_is_after_zoom);
if (property == CSSPropertyVariable)
continue;
// give special priority to font-xxx, color properties, etc
if (property < CSSPropertyLineHeight)
applyProperty(current.id(), current.value());
// we apply line-height later
else if (property == CSSPropertyLineHeight)
m_state.setLineHeightValue(current.value());
break;
case LowPriorityProperties:
if (property > CSSPropertyLineHeight)
applyProperty(current.id(), current.value());
}
}
InspectorInstrumentation::didProcessRule(cookie);
}
template <StyleResolver::StyleApplicationPass pass>
void StyleResolver::applyMatchedProperties(const MatchResult& matchResult, bool isImportant, int startIndex, int endIndex, bool inheritedOnly)
{
if (startIndex == -1)
return;
StyleResolverState& state = m_state;
if (state.style()->insideLink() != NotInsideLink) {
for (int i = startIndex; i <= endIndex; ++i) {
const MatchedProperties& matchedProperties = matchResult.matchedProperties[i];
unsigned linkMatchType = matchedProperties.linkMatchType;
// FIXME: It would be nicer to pass these as arguments but that requires changes in many places.
state.setApplyPropertyToRegularStyle(linkMatchType & SelectorChecker::MatchLink);
state.setApplyPropertyToVisitedLinkStyle(linkMatchType & SelectorChecker::MatchVisited);
applyProperties<pass>(matchedProperties.properties.get(), matchResult.matchedRules[i], isImportant, inheritedOnly, static_cast<PropertyWhitelistType>(matchedProperties.whitelistType));
}
state.setApplyPropertyToRegularStyle(true);
state.setApplyPropertyToVisitedLinkStyle(false);
return;
}
for (int i = startIndex; i <= endIndex; ++i) {
const MatchedProperties& matchedProperties = matchResult.matchedProperties[i];
applyProperties<pass>(matchedProperties.properties.get(), matchResult.matchedRules[i], isImportant, inheritedOnly, static_cast<PropertyWhitelistType>(matchedProperties.whitelistType));
}
}
unsigned StyleResolver::computeMatchedPropertiesHash(const MatchedProperties* properties, unsigned size)
{
return StringHasher::hashMemory(properties, sizeof(MatchedProperties) * size);
}
bool operator==(const StyleResolver::MatchRanges& a, const StyleResolver::MatchRanges& b)
{
return a.firstUARule == b.firstUARule
&& a.lastUARule == b.lastUARule
&& a.firstAuthorRule == b.firstAuthorRule
&& a.lastAuthorRule == b.lastAuthorRule
&& a.firstUserRule == b.firstUserRule
&& a.lastUserRule == b.lastUserRule;
}
bool operator!=(const StyleResolver::MatchRanges& a, const StyleResolver::MatchRanges& b)
{
return !(a == b);
}
bool operator==(const StyleResolver::MatchedProperties& a, const StyleResolver::MatchedProperties& b)
{
return a.properties == b.properties && a.linkMatchType == b.linkMatchType;
}
bool operator!=(const StyleResolver::MatchedProperties& a, const StyleResolver::MatchedProperties& b)
{
return !(a == b);
}
const StyleResolver::MatchedPropertiesCacheItem* StyleResolver::findFromMatchedPropertiesCache(unsigned hash, const MatchResult& matchResult)
{
ASSERT(hash);
MatchedPropertiesCache::iterator it = m_matchedPropertiesCache.find(hash);
if (it == m_matchedPropertiesCache.end())
return 0;
MatchedPropertiesCacheItem& cacheItem = it->value;
size_t size = matchResult.matchedProperties.size();
if (size != cacheItem.matchedProperties.size())
return 0;
if (cacheItem.renderStyle->insideLink() != m_state.style()->insideLink())
return 0;
for (size_t i = 0; i < size; ++i) {
if (matchResult.matchedProperties[i] != cacheItem.matchedProperties[i])
return 0;
}
if (cacheItem.ranges != matchResult.ranges)
return 0;
return &cacheItem;
}
void StyleResolver::addToMatchedPropertiesCache(const RenderStyle* style, const RenderStyle* parentStyle, unsigned hash, const MatchResult& matchResult)
{
static const unsigned matchedDeclarationCacheAdditionsBetweenSweeps = 100;
if (++m_matchedPropertiesCacheAdditionsSinceLastSweep >= matchedDeclarationCacheAdditionsBetweenSweeps
&& !m_matchedPropertiesCacheSweepTimer.isActive()) {
static const unsigned matchedDeclarationCacheSweepTimeInSeconds = 60;
m_matchedPropertiesCacheSweepTimer.startOneShot(matchedDeclarationCacheSweepTimeInSeconds);
}
ASSERT(hash);
MatchedPropertiesCacheItem cacheItem;
cacheItem.matchedProperties.append(matchResult.matchedProperties);
cacheItem.ranges = matchResult.ranges;
// Note that we don't cache the original RenderStyle instance. It may be further modified.
// The RenderStyle in the cache is really just a holder for the substructures and never used as-is.
cacheItem.renderStyle = RenderStyle::clone(style);
cacheItem.parentRenderStyle = RenderStyle::clone(parentStyle);
m_matchedPropertiesCache.add(hash, cacheItem);
}
void StyleResolver::invalidateMatchedPropertiesCache()
{
m_matchedPropertiesCache.clear();
}
static bool isCacheableInMatchedPropertiesCache(const Element* element, const RenderStyle* style, const RenderStyle* parentStyle)
{
// FIXME: CSSPropertyWebkitWritingMode modifies state when applying to document element. We can't skip the applying by caching.
if (element == element->document()->documentElement() && element->document()->writingModeSetOnDocumentElement())
return false;
if (style->unique() || (style->styleType() != NOPSEUDO && parentStyle->unique()))
return false;
if (style->hasAppearance())
return false;
if (style->zoom() != RenderStyle::initialZoom())
return false;
if (style->writingMode() != RenderStyle::initialWritingMode())
return false;
// The cache assumes static knowledge about which properties are inherited.
if (parentStyle->hasExplicitlyInheritedProperties())
return false;
return true;
}
void StyleResolver::applyMatchedProperties(const MatchResult& matchResult, const Element* element)
{
ASSERT(element);
StyleResolverState& state = m_state;
unsigned cacheHash = matchResult.isCacheable ? computeMatchedPropertiesHash(matchResult.matchedProperties.data(), matchResult.matchedProperties.size()) : 0;
bool applyInheritedOnly = false;
const MatchedPropertiesCacheItem* cacheItem = 0;
if (cacheHash && (cacheItem = findFromMatchedPropertiesCache(cacheHash, matchResult))) {
// We can build up the style by copying non-inherited properties from an earlier style object built using the same exact
// style declarations. We then only need to apply the inherited properties, if any, as their values can depend on the
// element context. This is fast and saves memory by reusing the style data structures.
state.style()->copyNonInheritedFrom(cacheItem->renderStyle.get());
if (state.parentStyle()->inheritedDataShared(cacheItem->parentRenderStyle.get()) && !isAtShadowBoundary(element)) {
EInsideLink linkStatus = state.style()->insideLink();
// If the cache item parent style has identical inherited properties to the current parent style then the
// resulting style will be identical too. We copy the inherited properties over from the cache and are done.
state.style()->inheritFrom(cacheItem->renderStyle.get());
// Unfortunately the link status is treated like an inherited property. We need to explicitly restore it.
state.style()->setInsideLink(linkStatus);
return;
}
applyInheritedOnly = true;
}
// First apply all variable definitions, as they may be used during application of later properties.
applyMatchedProperties<VariableDefinitions>(matchResult, false, 0, matchResult.matchedProperties.size() - 1, applyInheritedOnly);
applyMatchedProperties<VariableDefinitions>(matchResult, true, matchResult.ranges.firstAuthorRule, matchResult.ranges.lastAuthorRule, applyInheritedOnly);
applyMatchedProperties<VariableDefinitions>(matchResult, true, matchResult.ranges.firstUserRule, matchResult.ranges.lastUserRule, applyInheritedOnly);
applyMatchedProperties<VariableDefinitions>(matchResult, true, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
// Now we have all of the matched rules in the appropriate order. Walk the rules and apply
// high-priority properties first, i.e., those properties that other properties depend on.
// The order is (1) high-priority not important, (2) high-priority important, (3) normal not important
// and (4) normal important.
state.setLineHeightValue(0);
applyMatchedProperties<HighPriorityProperties>(matchResult, false, 0, matchResult.matchedProperties.size() - 1, applyInheritedOnly);
// Animation contributions are processed here because CSS Animations are overridable by user !important rules.
if (RuntimeEnabledFeatures::webAnimationsEnabled())
applyAnimatedProperties<HighPriorityProperties>(element);
applyMatchedProperties<HighPriorityProperties>(matchResult, true, matchResult.ranges.firstAuthorRule, matchResult.ranges.lastAuthorRule, applyInheritedOnly);
applyMatchedProperties<HighPriorityProperties>(matchResult, true, matchResult.ranges.firstUserRule, matchResult.ranges.lastUserRule, applyInheritedOnly);
applyMatchedProperties<HighPriorityProperties>(matchResult, true, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
if (cacheItem && cacheItem->renderStyle->effectiveZoom() != state.style()->effectiveZoom()) {
state.setFontDirty(true);
applyInheritedOnly = false;
}
// If our font got dirtied, go ahead and update it now.
updateFont();
// Line-height is set when we are sure we decided on the font-size.
if (state.lineHeightValue())
applyProperty(CSSPropertyLineHeight, state.lineHeightValue());
// Many properties depend on the font. If it changes we just apply all properties.
if (cacheItem && cacheItem->renderStyle->fontDescription() != state.style()->fontDescription())
applyInheritedOnly = false;
// Now do the normal priority UA properties.
applyMatchedProperties<LowPriorityProperties>(matchResult, false, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
// Cache our border and background so that we can examine them later.
state.cacheBorderAndBackground();
// Now do the author and user normal priority properties and all the !important properties.
applyMatchedProperties<LowPriorityProperties>(matchResult, false, matchResult.ranges.lastUARule + 1, matchResult.matchedProperties.size() - 1, applyInheritedOnly);
if (RuntimeEnabledFeatures::webAnimationsEnabled())
applyAnimatedProperties<LowPriorityProperties>(element);
applyMatchedProperties<LowPriorityProperties>(matchResult, true, matchResult.ranges.firstAuthorRule, matchResult.ranges.lastAuthorRule, applyInheritedOnly);
applyMatchedProperties<LowPriorityProperties>(matchResult, true, matchResult.ranges.firstUserRule, matchResult.ranges.lastUserRule, applyInheritedOnly);
applyMatchedProperties<LowPriorityProperties>(matchResult, true, matchResult.ranges.firstUARule, matchResult.ranges.lastUARule, applyInheritedOnly);
// Start loading resources referenced by this style.
loadPendingResources();
ASSERT(!state.fontDirty());
if (cacheItem || !cacheHash)
return;
if (!isCacheableInMatchedPropertiesCache(state.element(), state.style(), state.parentStyle()))
return;
addToMatchedPropertiesCache(state.style(), state.parentStyle(), cacheHash, matchResult);
}
void StyleResolver::applyPropertyToStyle(CSSPropertyID id, CSSValue* value, RenderStyle* style)
{
initElement(0);
m_state.initForStyleResolve(document(), 0, style);
m_state.setStyle(style);
applyPropertyToCurrentStyle(id, value);
}
void StyleResolver::applyPropertyToCurrentStyle(CSSPropertyID id, CSSValue* value)
{
if (value)
applyProperty(id, value);
}
inline bool isValidVisitedLinkProperty(CSSPropertyID id)
{
switch (id) {
case CSSPropertyBackgroundColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderTopColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyColor:
case CSSPropertyFill:
case CSSPropertyOutlineColor:
case CSSPropertyStroke:
case CSSPropertyWebkitColumnRuleColor:
#if ENABLE(CSS3_TEXT)
case CSSPropertyWebkitTextDecorationColor:
#endif // CSS3_TEXT
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextStrokeColor:
return true;
default:
break;
}
return false;
}
// http://dev.w3.org/csswg/css3-regions/#the-at-region-style-rule
// FIXME: add incremental support for other region styling properties.
inline bool StyleResolver::isValidRegionStyleProperty(CSSPropertyID id)
{
switch (id) {
case CSSPropertyBackgroundColor:
case CSSPropertyColor:
return true;
default:
break;
}
return false;
}
inline bool StyleResolver::isValidCueStyleProperty(CSSPropertyID id)
{
switch (id) {
case CSSPropertyBackground:
case CSSPropertyBackgroundAttachment:
case CSSPropertyBackgroundClip:
case CSSPropertyBackgroundColor:
case CSSPropertyBackgroundImage:
case CSSPropertyBackgroundOrigin:
case CSSPropertyBackgroundPosition:
case CSSPropertyBackgroundPositionX:
case CSSPropertyBackgroundPositionY:
case CSSPropertyBackgroundRepeat:
case CSSPropertyBackgroundRepeatX:
case CSSPropertyBackgroundRepeatY:
case CSSPropertyBackgroundSize:
case CSSPropertyColor:
case CSSPropertyFont:
case CSSPropertyFontFamily:
case CSSPropertyFontSize:
case CSSPropertyFontStyle:
case CSSPropertyFontVariant:
case CSSPropertyFontWeight:
case CSSPropertyLineHeight:
case CSSPropertyOpacity:
case CSSPropertyOutline:
case CSSPropertyOutlineColor:
case CSSPropertyOutlineOffset:
case CSSPropertyOutlineStyle:
case CSSPropertyOutlineWidth:
case CSSPropertyVisibility:
case CSSPropertyWhiteSpace:
case CSSPropertyTextDecoration:
case CSSPropertyTextShadow:
case CSSPropertyBorderStyle:
return true;
default:
break;
}
return false;
}
// SVG handles zooming in a different way compared to CSS. The whole document is scaled instead
// of each individual length value in the render style / tree. CSSPrimitiveValue::computeLength*()
// multiplies each resolved length with the zoom multiplier - so for SVG we need to disable that.
// Though all CSS values that can be applied to outermost <svg> elements (width/height/border/padding...)
// need to respect the scaling. RenderBox (the parent class of RenderSVGRoot) grabs values like
// width/height/border/padding/... from the RenderStyle -> for SVG these values would never scale,
// if we'd pass a 1.0 zoom factor everyhwere. So we only pass a zoom factor of 1.0 for specific
// properties that are NOT allowed to scale within a zoomed SVG document (letter/word-spacing/font-size).
bool StyleResolver::useSVGZoomRules()
{
return m_state.element() && m_state.element()->isSVGElement();
}
static bool createGridTrackBreadth(CSSPrimitiveValue* primitiveValue, const StyleResolverState& state, GridLength& workingLength)
{
if (primitiveValue->getIdent() == CSSValueWebkitMinContent) {
workingLength = Length(MinContent);
return true;
}
if (primitiveValue->getIdent() == CSSValueWebkitMaxContent) {
workingLength = Length(MaxContent);
return true;
}
if (primitiveValue->isFlex()) {
// Fractional unit.
workingLength.setFlex(primitiveValue->getFloatValue());
return true;
}
workingLength = primitiveValue->convertToLength<FixedIntegerConversion | PercentConversion | ViewportPercentageConversion | AutoConversion>(state.style(), state.rootElementStyle(), state.style()->effectiveZoom());
if (workingLength.length().isUndefined())
return false;
if (primitiveValue->isLength())
workingLength.length().setQuirk(primitiveValue->isQuirkValue());
return true;
}
static bool createGridTrackSize(CSSValue* value, GridTrackSize& trackSize, const StyleResolverState& state)
{
if (!value->isPrimitiveValue())
return false;
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
Pair* minMaxTrackBreadth = primitiveValue->getPairValue();
if (!minMaxTrackBreadth) {
GridLength workingLength;
if (!createGridTrackBreadth(primitiveValue, state, workingLength))
return false;
trackSize.setLength(workingLength);
return true;
}
GridLength minTrackBreadth;
GridLength maxTrackBreadth;
if (!createGridTrackBreadth(minMaxTrackBreadth->first(), state, minTrackBreadth) || !createGridTrackBreadth(minMaxTrackBreadth->second(), state, maxTrackBreadth))
return false;
trackSize.setMinMax(minTrackBreadth, maxTrackBreadth);
return true;
}
static bool createGridTrackList(CSSValue* value, Vector<GridTrackSize>& trackSizes, NamedGridLinesMap& namedGridLines, const StyleResolverState& state)
{
// Handle 'none'.
if (value->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
return primitiveValue->getIdent() == CSSValueNone;
}
if (!value->isValueList())
return false;
size_t currentNamedGridLine = 0;
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* currValue = i.value();
if (currValue->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(currValue);
if (primitiveValue->isString()) {
NamedGridLinesMap::AddResult result = namedGridLines.add(primitiveValue->getStringValue(), Vector<size_t>());
result.iterator->value.append(currentNamedGridLine);
continue;
}
}
++currentNamedGridLine;
GridTrackSize trackSize;
if (!createGridTrackSize(currValue, trackSize, state))
return false;
trackSizes.append(trackSize);
}
if (trackSizes.isEmpty())
return false;
return true;
}
static bool createGridPosition(CSSValue* value, GridPosition& position)
{
// For now, we only accept: 'auto' | [ <integer> || <string> ] | span && <integer>?
if (value->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
ASSERT(primitiveValue->getIdent() == CSSValueAuto);
return true;
}
CSSValueList* values = toCSSValueList(value);
ASSERT(values->length());
bool isSpanPosition = false;
// The specification makes the <integer> optional, in which case it default to '1'.
int gridLineNumber = 1;
String gridLineName;
CSSValueListIterator it = values;
CSSPrimitiveValue* currentValue = toCSSPrimitiveValue(it.value());
if (currentValue->getIdent() == CSSValueSpan) {
isSpanPosition = true;
it.advance();
currentValue = it.hasMore() ? toCSSPrimitiveValue(it.value()) : 0;
}
if (currentValue && currentValue->isNumber()) {
gridLineNumber = currentValue->getIntValue();
it.advance();
currentValue = it.hasMore() ? toCSSPrimitiveValue(it.value()) : 0;
}
if (currentValue && currentValue->isString()) {
gridLineName = currentValue->getStringValue();
it.advance();
}
ASSERT(!it.hasMore());
if (isSpanPosition)
position.setSpanPosition(gridLineNumber, gridLineName);
else
position.setExplicitPosition(gridLineNumber, gridLineName);
return true;
}
static bool hasVariableReference(CSSValue* value)
{
if (value->isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
return primitiveValue->hasVariableReference();
}
if (value->isCalculationValue())
return static_cast<CSSCalcValue*>(value)->hasVariableReference();
if (value->isReflectValue()) {
CSSReflectValue* reflectValue = static_cast<CSSReflectValue*>(value);
CSSPrimitiveValue* direction = reflectValue->direction();
CSSPrimitiveValue* offset = reflectValue->offset();
CSSValue* mask = reflectValue->mask();
return (direction && hasVariableReference(direction)) || (offset && hasVariableReference(offset)) || (mask && hasVariableReference(mask));
}
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
if (hasVariableReference(i.value()))
return true;
}
return false;
}
void StyleResolver::resolveVariables(CSSPropertyID id, CSSValue* value, Vector<std::pair<CSSPropertyID, String> >& knownExpressions)
{
std::pair<CSSPropertyID, String> expression(id, value->serializeResolvingVariables(*m_state.style()->variables()));
if (knownExpressions.contains(expression))
return; // cycle detected.
knownExpressions.append(expression);
// FIXME: It would be faster not to re-parse from strings, but for now CSS property validation lives inside the parser so we do it there.
RefPtr<MutableStylePropertySet> resultSet = MutableStylePropertySet::create();
if (!CSSParser::parseValue(resultSet.get(), id, expression.second, false, document()))
return; // expression failed to parse.
for (unsigned i = 0; i < resultSet->propertyCount(); i++) {
StylePropertySet::PropertyReference property = resultSet->propertyAt(i);
if (property.id() != CSSPropertyVariable && hasVariableReference(property.value()))
resolveVariables(property.id(), property.value(), knownExpressions);
else
applyProperty(property.id(), property.value());
}
}
void StyleResolver::applyProperty(CSSPropertyID id, CSSValue* value)
{
if (id != CSSPropertyVariable && hasVariableReference(value)) {
Vector<std::pair<CSSPropertyID, String> > knownExpressions;
resolveVariables(id, value, knownExpressions);
return;
}
// CSS variables don't resolve shorthands at parsing time, so this should be *after* handling variables.
ASSERT_WITH_MESSAGE(!isExpandedShorthand(id), "Shorthand property id = %d wasn't expanded at parsing time", id);
StyleResolverState& state = m_state;
bool isInherit = state.parentNode() && value->isInheritedValue();
bool isInitial = value->isInitialValue() || (!state.parentNode() && value->isInheritedValue());
ASSERT(!isInherit || !isInitial); // isInherit -> !isInitial && isInitial -> !isInherit
ASSERT(!isInherit || (state.parentNode() && state.parentStyle())); // isInherit -> (state.parentNode() && state.parentStyle())
if (!state.applyPropertyToRegularStyle() && (!state.applyPropertyToVisitedLinkStyle() || !isValidVisitedLinkProperty(id))) {
// Limit the properties that can be applied to only the ones honored by :visited.
return;
}
if (isInherit && !state.parentStyle()->hasExplicitlyInheritedProperties() && !CSSProperty::isInheritedProperty(id))
state.parentStyle()->setHasExplicitlyInheritedProperties();
if (id == CSSPropertyVariable) {
ASSERT_WITH_SECURITY_IMPLICATION(value->isVariableValue());
CSSVariableValue* variable = static_cast<CSSVariableValue*>(value);
ASSERT(!variable->name().isEmpty());
ASSERT(!variable->value().isEmpty());
state.style()->setVariable(variable->name(), variable->value());
return;
}
// Check lookup table for implementations and use when available.
const PropertyHandler& handler = m_styleBuilder.propertyHandler(id);
if (handler.isValid()) {
if (isInherit)
handler.applyInheritValue(id, this);
else if (isInitial)
handler.applyInitialValue(id, this);
else
handler.applyValue(id, this, value);
return;
}
// Use the new StyleBuilder.
if (StyleBuilder::applyProperty(id, this, value, isInitial, isInherit))
return;
CSSPrimitiveValue* primitiveValue = value->isPrimitiveValue() ? toCSSPrimitiveValue(value) : 0;
float zoomFactor = state.style()->effectiveZoom();
// What follows is a list that maps the CSS properties into their corresponding front-end
// RenderStyle values.
switch (id) {
// lists
case CSSPropertyContent:
// list of string, uri, counter, attr, i
{
// FIXME: In CSS3, it will be possible to inherit content. In CSS2 it is not. This
// note is a reminder that eventually "inherit" needs to be supported.
if (isInitial) {
state.style()->clearContent();
return;
}
if (!value->isValueList())
return;
bool didSet = false;
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* item = i.value();
if (item->isImageGeneratorValue()) {
if (item->isGradientValue())
state.style()->setContent(StyleGeneratedImage::create(static_cast<CSSGradientValue*>(item)->gradientWithStylesResolved(this).get()), didSet);
else
state.style()->setContent(StyleGeneratedImage::create(static_cast<CSSImageGeneratorValue*>(item)), didSet);
didSet = true;
} else if (item->isImageSetValue()) {
state.style()->setContent(setOrPendingFromValue(CSSPropertyContent, static_cast<CSSImageSetValue*>(item)), didSet);
didSet = true;
}
if (item->isImageValue()) {
state.style()->setContent(cachedOrPendingFromValue(CSSPropertyContent, toCSSImageValue(item)), didSet);
didSet = true;
continue;
}
if (!item->isPrimitiveValue())
continue;
CSSPrimitiveValue* contentValue = toCSSPrimitiveValue(item);
if (contentValue->isString()) {
state.style()->setContent(contentValue->getStringValue().impl(), didSet);
didSet = true;
} else if (contentValue->isAttr()) {
// FIXME: Can a namespace be specified for an attr(foo)?
if (state.style()->styleType() == NOPSEUDO)
state.style()->setUnique();
else
state.parentStyle()->setUnique();
QualifiedName attr(nullAtom, contentValue->getStringValue().impl(), nullAtom);
const AtomicString& value = state.element()->getAttribute(attr);
state.style()->setContent(value.isNull() ? emptyAtom : value.impl(), didSet);
didSet = true;
// register the fact that the attribute value affects the style
m_features.attrsInRules.add(attr.localName().impl());
} else if (contentValue->isCounter()) {
Counter* counterValue = contentValue->getCounterValue();
EListStyleType listStyleType = NoneListStyle;
int listStyleIdent = counterValue->listStyleIdent();
if (listStyleIdent != CSSValueNone)
listStyleType = static_cast<EListStyleType>(listStyleIdent - CSSValueDisc);
OwnPtr<CounterContent> counter = adoptPtr(new CounterContent(counterValue->identifier(), listStyleType, counterValue->separator()));
state.style()->setContent(counter.release(), didSet);
didSet = true;
} else {
switch (contentValue->getIdent()) {
case CSSValueOpenQuote:
state.style()->setContent(OPEN_QUOTE, didSet);
didSet = true;
break;
case CSSValueCloseQuote:
state.style()->setContent(CLOSE_QUOTE, didSet);
didSet = true;
break;
case CSSValueNoOpenQuote:
state.style()->setContent(NO_OPEN_QUOTE, didSet);
didSet = true;
break;
case CSSValueNoCloseQuote:
state.style()->setContent(NO_CLOSE_QUOTE, didSet);
didSet = true;
break;
default:
// normal and none do not have any effect.
{ }
}
}
}
if (!didSet)
state.style()->clearContent();
return;
}
case CSSPropertyQuotes:
if (isInherit) {
state.style()->setQuotes(state.parentStyle()->quotes());
return;
}
if (isInitial) {
state.style()->setQuotes(0);
return;
}
if (value->isValueList()) {
CSSValueList* list = toCSSValueList(value);
RefPtr<QuotesData> quotes = QuotesData::create();
for (size_t i = 0; i < list->length(); i += 2) {
CSSValue* first = list->itemWithoutBoundsCheck(i);
// item() returns null if out of bounds so this is safe.
CSSValue* second = list->item(i + 1);
if (!second)
continue;
String startQuote = toCSSPrimitiveValue(first)->getStringValue();
String endQuote = toCSSPrimitiveValue(second)->getStringValue();
quotes->addPair(std::make_pair(startQuote, endQuote));
}
state.style()->setQuotes(quotes);
return;
}
if (primitiveValue) {
if (primitiveValue->getIdent() == CSSValueNone)
state.style()->setQuotes(QuotesData::create());
}
return;
// Shorthand properties.
case CSSPropertyFont:
if (isInherit) {
FontDescription fontDescription = state.parentStyle()->fontDescription();
state.style()->setLineHeight(state.parentStyle()->specifiedLineHeight());
state.setLineHeightValue(0);
setFontDescription(fontDescription);
} else if (isInitial) {
Settings* settings = documentSettings();
ASSERT(settings); // If we're doing style resolution, this document should always be in a frame and thus have settings
if (!settings)
return;
initializeFontStyle(settings);
} else if (primitiveValue) {
state.style()->setLineHeight(RenderStyle::initialLineHeight());
state.setLineHeightValue(0);
FontDescription fontDescription;
RenderTheme::defaultTheme()->systemFont(primitiveValue->getIdent(), fontDescription);
// Double-check and see if the theme did anything. If not, don't bother updating the font.
if (fontDescription.isAbsoluteSize()) {
// Make sure the rendering mode and printer font settings are updated.
Settings* settings = documentSettings();
ASSERT(settings); // If we're doing style resolution, this document should always be in a frame and thus have settings
if (!settings)
return;
fontDescription.setRenderingMode(settings->fontRenderingMode());
fontDescription.setUsePrinterFont(document()->printing());
// Handle the zoom factor.
fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(document(), state.style(), fontDescription.isAbsoluteSize(), fontDescription.specifiedSize(), useSVGZoomRules()));
setFontDescription(fontDescription);
}
} else if (value->isFontValue()) {
FontValue* font = static_cast<FontValue*>(value);
if (!font->style || !font->variant || !font->weight
|| !font->size || !font->lineHeight || !font->family)
return;
applyProperty(CSSPropertyFontStyle, font->style.get());
applyProperty(CSSPropertyFontVariant, font->variant.get());
applyProperty(CSSPropertyFontWeight, font->weight.get());
// The previous properties can dirty our font but they don't try to read the font's
// properties back, which is safe. However if font-size is using the 'ex' unit, it will
// need query the dirtied font's x-height to get the computed size. To be safe in this
// case, let's just update the font now.
updateFont();
applyProperty(CSSPropertyFontSize, font->size.get());
state.setLineHeightValue(font->lineHeight.get());
applyProperty(CSSPropertyFontFamily, font->family.get());
}
return;
case CSSPropertyBackground:
case CSSPropertyBackgroundPosition:
case CSSPropertyBackgroundRepeat:
case CSSPropertyBorder:
case CSSPropertyBorderBottom:
case CSSPropertyBorderColor:
case CSSPropertyBorderImage:
case CSSPropertyBorderLeft:
case CSSPropertyBorderRadius:
case CSSPropertyBorderRight:
case CSSPropertyBorderSpacing:
case CSSPropertyBorderStyle:
case CSSPropertyBorderTop:
case CSSPropertyBorderWidth:
case CSSPropertyListStyle:
case CSSPropertyMargin:
case CSSPropertyOutline:
case CSSPropertyOverflow:
case CSSPropertyPadding:
case CSSPropertyTransition:
case CSSPropertyWebkitAnimation:
case CSSPropertyWebkitBorderAfter:
case CSSPropertyWebkitBorderBefore:
case CSSPropertyWebkitBorderEnd:
case CSSPropertyWebkitBorderStart:
case CSSPropertyWebkitBorderRadius:
case CSSPropertyWebkitColumns:
case CSSPropertyWebkitColumnRule:
case CSSPropertyWebkitFlex:
case CSSPropertyWebkitFlexFlow:
case CSSPropertyWebkitGridColumn:
case CSSPropertyWebkitGridRow:
case CSSPropertyWebkitMarginCollapse:
case CSSPropertyWebkitMarquee:
case CSSPropertyWebkitMask:
case CSSPropertyWebkitMaskPosition:
case CSSPropertyWebkitMaskRepeat:
case CSSPropertyWebkitTextEmphasis:
case CSSPropertyWebkitTextStroke:
case CSSPropertyWebkitTransition:
case CSSPropertyWebkitTransformOrigin:
ASSERT(isExpandedShorthand(id));
ASSERT_NOT_REACHED();
break;
// CSS3 Properties
case CSSPropertyTextShadow:
case CSSPropertyBoxShadow:
case CSSPropertyWebkitBoxShadow: {
if (isInherit) {
if (id == CSSPropertyTextShadow)
return state.style()->setTextShadow(state.parentStyle()->textShadow() ? adoptPtr(new ShadowData(*state.parentStyle()->textShadow())) : nullptr);
return state.style()->setBoxShadow(state.parentStyle()->boxShadow() ? adoptPtr(new ShadowData(*state.parentStyle()->boxShadow())) : nullptr);
}
if (isInitial || primitiveValue) // initial | none
return id == CSSPropertyTextShadow ? state.style()->setTextShadow(nullptr) : state.style()->setBoxShadow(nullptr);
if (!value->isValueList())
return;
for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
CSSValue* currValue = i.value();
if (!currValue->isShadowValue())
continue;
ShadowValue* item = static_cast<ShadowValue*>(currValue);
int x = item->x->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor);
int y = item->y->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor);
int blur = item->blur ? item->blur->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
int spread = item->spread ? item->spread->computeLength<int>(state.style(), state.rootElementStyle(), zoomFactor) : 0;
ShadowStyle shadowStyle = item->style && item->style->getIdent() == CSSValueInset ? Inset : Normal;
Color color;
if (item->color)
color = m_state.colorFromPrimitiveValue(item->color.get());
else if (state.style())
color = state.style()->color();
OwnPtr<ShadowData> shadowData = adoptPtr(new ShadowData(IntPoint(x, y), blur, spread, shadowStyle, color.isValid() ? color : Color::transparent));
if (id == CSSPropertyTextShadow)
state.style()->setTextShadow(shadowData.release(), i.index()); // add to the list if this is not the first entry
else
state.style()->setBoxShadow(shadowData.release(), i.index()); // add to the list if this is not the first entry
}
return;
}
case CSSPropertyWebkitBoxReflect: {
HANDLE_INHERIT_AND_INITIAL(boxReflect, BoxReflect)
if (primitiveValue) {
state.style()->setBoxReflect(RenderStyle::initialBoxReflect());
return;
}
if (!value->isReflectValue())
return;
CSSReflectValue* reflectValue = static_cast<CSSReflectValue*>(value);
RefPtr<StyleReflection> reflection = StyleReflection::create();
reflection->setDirection(*reflectValue->direction());
if (reflectValue->offset())
reflection->setOffset(reflectValue->offset()->convertToLength<FixedIntegerConversion | PercentConversion | CalculatedConversion>(state.style(), state.rootElementStyle(), zoomFactor));
NinePieceImage mask;
mask.setMaskDefaults();
m_styleMap.mapNinePieceImage(id, reflectValue->mask(), mask);
reflection->setMask(mask);
state.style()->setBoxReflect(reflection.release());
return;
}
case CSSPropertySrc: // Only used in @font-face rules.
return;
case CSSPropertyUnicodeRange: // Only used in @font-face rules.
return;
case CSSPropertyWebkitLocale: {
HANDLE_INHERIT_AND_INITIAL(locale, Locale);
if (!primitiveValue)
return;
if (primitiveValue->getIdent() == CSSValueAuto)
state.style()->setLocale(nullAtom);
else
state.style()->setLocale(primitiveValue->getStringValue());
FontDescription fontDescription = state.style()->fontDescription();
fontDescription.setScript(localeToScriptCodeForFontSelection(state.style()->locale()));
setFontDescription(fontDescription);
return;
}
case CSSPropertyWebkitAppRegion: {
if (!primitiveValue || !primitiveValue->getIdent())
return;
state.style()->setDraggableRegionMode(primitiveValue->getIdent() == CSSValueDrag ? DraggableRegionDrag : DraggableRegionNoDrag);
state.document()->setHasAnnotatedRegions(true);
return;
}
case CSSPropertyWebkitTextStrokeWidth: {
HANDLE_INHERIT_AND_INITIAL(textStrokeWidth, TextStrokeWidth)
float width = 0;
switch (primitiveValue->getIdent()) {
case CSSValueThin:
case CSSValueMedium:
case CSSValueThick: {
double result = 1.0 / 48;
if (primitiveValue->getIdent() == CSSValueMedium)
result *= 3;
else if (primitiveValue->getIdent() == CSSValueThick)
result *= 5;
width = CSSPrimitiveValue::create(result, CSSPrimitiveValue::CSS_EMS)->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
break;
}
default:
width = primitiveValue->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
break;
}
state.style()->setTextStrokeWidth(width);
return;
}
case CSSPropertyWebkitTransform: {
HANDLE_INHERIT_AND_INITIAL(transform, Transform);
TransformOperations operations;
TransformBuilder::createTransformOperations(value, state.style(), state.rootElementStyle(), operations);
state.style()->setTransform(operations);
return;
}
case CSSPropertyWebkitPerspective: {
HANDLE_INHERIT_AND_INITIAL(perspective, Perspective)
if (!primitiveValue)
return;
if (primitiveValue->getIdent() == CSSValueNone) {
state.style()->setPerspective(0);
return;
}
float perspectiveValue;
if (primitiveValue->isLength())
perspectiveValue = primitiveValue->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
else if (primitiveValue->isNumber()) {
// For backward compatibility, treat valueless numbers as px.
perspectiveValue = CSSPrimitiveValue::create(primitiveValue->getDoubleValue(), CSSPrimitiveValue::CSS_PX)->computeLength<float>(state.style(), state.rootElementStyle(), zoomFactor);
} else
return;
if (perspectiveValue >= 0.0f)
state.style()->setPerspective(perspectiveValue);
return;
}
case CSSPropertyWebkitTapHighlightColor: {
HANDLE_INHERIT_AND_INITIAL(tapHighlightColor, TapHighlightColor);
if (!primitiveValue)
break;
Color col = m_state.colorFromPrimitiveValue(primitiveValue);
state.style()->setTapHighlightColor(col);
return;
}
#if ENABLE(ACCELERATED_OVERFLOW_SCROLLING)
case CSSPropertyWebkitOverflowScrolling: {
HANDLE_INHERIT_AND_INITIAL(useTouchOverflowScrolling, UseTouchOverflowScrolling);
if (!primitiveValue)
break;
state.style()->setUseTouchOverflowScrolling(primitiveValue->getIdent() == CSSValueTouch);
return;
}
#endif
case CSSPropertyInvalid:
return;
// Directional properties are resolved by resolveDirectionAwareProperty() before the switch.
case CSSPropertyWebkitBorderEndColor:
case CSSPropertyWebkitBorderEndStyle:
case CSSPropertyWebkitBorderEndWidth:
case CSSPropertyWebkitBorderStartColor:
case CSSPropertyWebkitBorderStartStyle:
case CSSPropertyWebkitBorderStartWidth:
case CSSPropertyWebkitBorderBeforeColor:
case CSSPropertyWebkitBorderBeforeStyle:
case CSSPropertyWebkitBorderBeforeWidth:
case CSSPropertyWebkitBorderAfterColor:
case CSSPropertyWebkitBorderAfterStyle:
case CSSPropertyWebkitBorderAfterWidth:
case CSSPropertyWebkitMarginEnd:
case CSSPropertyWebkitMarginStart:
case CSSPropertyWebkitMarginBefore:
case CSSPropertyWebkitMarginAfter:
case CSSPropertyWebkitMarginBeforeCollapse:
case CSSPropertyWebkitMarginTopCollapse:
case CSSPropertyWebkitMarginAfterCollapse:
case CSSPropertyWebkitMarginBottomCollapse:
case CSSPropertyWebkitPaddingEnd:
case CSSPropertyWebkitPaddingStart:
case CSSPropertyWebkitPaddingBefore:
case CSSPropertyWebkitPaddingAfter:
case CSSPropertyWebkitLogicalWidth:
case CSSPropertyWebkitLogicalHeight:
case CSSPropertyWebkitMinLogicalWidth:
case CSSPropertyWebkitMinLogicalHeight:
case CSSPropertyWebkitMaxLogicalWidth:
case CSSPropertyWebkitMaxLogicalHeight:
{
CSSPropertyID newId = CSSProperty::resolveDirectionAwareProperty(id, state.style()->direction(), state.style()->writingMode());
ASSERT(newId != id);
return applyProperty(newId, value);
}
case CSSPropertyFontStretch:
case CSSPropertyPage:
case CSSPropertyTextLineThroughColor:
case CSSPropertyTextLineThroughMode:
case CSSPropertyTextLineThroughStyle:
case CSSPropertyTextLineThroughWidth:
case CSSPropertyTextOverlineColor:
case CSSPropertyTextOverlineMode:
case CSSPropertyTextOverlineStyle:
case CSSPropertyTextOverlineWidth:
case CSSPropertyTextUnderlineColor:
case CSSPropertyTextUnderlineMode:
case CSSPropertyTextUnderlineStyle:
case CSSPropertyTextUnderlineWidth:
case CSSPropertyWebkitFontSizeDelta:
case CSSPropertyWebkitTextDecorationsInEffect:
return;
// CSS Text Layout Module Level 3: Vertical writing support
case CSSPropertyWebkitWritingMode: {
HANDLE_INHERIT_AND_INITIAL(writingMode, WritingMode);
if (primitiveValue)
setWritingMode(*primitiveValue);
// FIXME: It is not ok to modify document state while applying style.
if (state.element() && state.element() == state.document()->documentElement())
state.document()->setWritingModeSetOnDocumentElement(true);
return;
}
case CSSPropertyWebkitTextOrientation: {
HANDLE_INHERIT_AND_INITIAL(textOrientation, TextOrientation);
if (primitiveValue)
setTextOrientation(*primitiveValue);
return;
}
case CSSPropertyWebkitLineBoxContain: {
HANDLE_INHERIT_AND_INITIAL(lineBoxContain, LineBoxContain)
if (primitiveValue && primitiveValue->getIdent() == CSSValueNone) {
state.style()->setLineBoxContain(LineBoxContainNone);
return;
}
if (!value->isCSSLineBoxContainValue())
return;
CSSLineBoxContainValue* lineBoxContainValue = static_cast<CSSLineBoxContainValue*>(value);
state.style()->setLineBoxContain(lineBoxContainValue->value());
return;
}
// CSS Fonts Module Level 3
case CSSPropertyWebkitFontFeatureSettings: {
if (primitiveValue && primitiveValue->getIdent() == CSSValueNormal) {
setFontDescription(state.style()->fontDescription().makeNormalFeatureSettings());
return;
}
if (!value->isValueList())
return;
FontDescription fontDescription = state.style()->fontDescription();
CSSValueList* list = toCSSValueList(value);
RefPtr<FontFeatureSettings> settings = FontFeatureSettings::create();
int len = list->length();
for (int i = 0; i < len; ++i) {
CSSValue* item = list->itemWithoutBoundsCheck(i);
if (!item->isFontFeatureValue())
continue;
FontFeatureValue* feature = static_cast<FontFeatureValue*>(item);
settings->append(FontFeature(feature->tag(), feature->value()));
}
fontDescription.setFeatureSettings(settings.release());
setFontDescription(fontDescription);
return;
}
case CSSPropertyWebkitFilter: {
HANDLE_INHERIT_AND_INITIAL(filter, Filter);
FilterOperations operations;
if (FilterOperationResolver::createFilterOperations(value, state.style(), state.rootElementStyle(), operations, m_customFilterProgramCache.get(), m_state))
state.style()->setFilter(operations);
return;
}
case CSSPropertyWebkitGridAutoColumns: {
HANDLE_INHERIT_AND_INITIAL(gridAutoColumns, GridAutoColumns);
GridTrackSize trackSize;
if (!createGridTrackSize(value, trackSize, state))
return;
state.style()->setGridAutoColumns(trackSize);
return;
}
case CSSPropertyWebkitGridAutoRows: {
HANDLE_INHERIT_AND_INITIAL(gridAutoRows, GridAutoRows);
GridTrackSize trackSize;
if (!createGridTrackSize(value, trackSize, state))
return;
state.style()->setGridAutoRows(trackSize);
return;
}
case CSSPropertyWebkitGridColumns: {
if (isInherit) {
m_state.style()->setGridColumns(m_state.parentStyle()->gridColumns());
m_state.style()->setNamedGridColumnLines(m_state.parentStyle()->namedGridColumnLines());
return;
}
if (isInitial) {
m_state.style()->setGridColumns(RenderStyle::initialGridColumns());
m_state.style()->setNamedGridColumnLines(RenderStyle::initialNamedGridColumnLines());
return;
}
Vector<GridTrackSize> trackSizes;
NamedGridLinesMap namedGridLines;
if (!createGridTrackList(value, trackSizes, namedGridLines, state))
return;
state.style()->setGridColumns(trackSizes);
state.style()->setNamedGridColumnLines(namedGridLines);
return;
}
case CSSPropertyWebkitGridRows: {
if (isInherit) {
m_state.style()->setGridRows(m_state.parentStyle()->gridRows());
m_state.style()->setNamedGridRowLines(m_state.parentStyle()->namedGridRowLines());
return;
}
if (isInitial) {
m_state.style()->setGridRows(RenderStyle::initialGridRows());
m_state.style()->setNamedGridRowLines(RenderStyle::initialNamedGridRowLines());
return;
}
Vector<GridTrackSize> trackSizes;
NamedGridLinesMap namedGridLines;
if (!createGridTrackList(value, trackSizes, namedGridLines, state))
return;
state.style()->setGridRows(trackSizes);
state.style()->setNamedGridRowLines(namedGridLines);
return;
}
case CSSPropertyWebkitGridStart: {
HANDLE_INHERIT_AND_INITIAL(gridStart, GridStart);
GridPosition startPosition;
if (!createGridPosition(value, startPosition))
return;
state.style()->setGridStart(startPosition);
return;
}
case CSSPropertyWebkitGridEnd: {
HANDLE_INHERIT_AND_INITIAL(gridEnd, GridEnd);
GridPosition endPosition;
if (!createGridPosition(value, endPosition))
return;
state.style()->setGridEnd(endPosition);
return;
}
case CSSPropertyWebkitGridBefore: {
HANDLE_INHERIT_AND_INITIAL(gridBefore, GridBefore);
GridPosition beforePosition;
if (!createGridPosition(value, beforePosition))
return;
state.style()->setGridBefore(beforePosition);
return;
}
case CSSPropertyWebkitGridAfter: {
HANDLE_INHERIT_AND_INITIAL(gridAfter, GridAfter);
GridPosition afterPosition;
if (!createGridPosition(value, afterPosition))
return;
state.style()->setGridAfter(afterPosition);
return;
}
// These properties are aliased and DeprecatedStyleBuilder already applied the property on the prefixed version.
case CSSPropertyTransitionDelay:
case CSSPropertyTransitionDuration:
case CSSPropertyTransitionProperty:
case CSSPropertyTransitionTimingFunction:
return;
// These properties are implemented in the DeprecatedStyleBuilder lookup table or in the new StyleBuilder.
case CSSPropertyBackgroundAttachment:
case CSSPropertyBackgroundBlendMode:
case CSSPropertyBackgroundClip:
case CSSPropertyBackgroundColor:
case CSSPropertyBackgroundImage:
case CSSPropertyBackgroundOrigin:
case CSSPropertyBackgroundPositionX:
case CSSPropertyBackgroundPositionY:
case CSSPropertyBackgroundRepeatX:
case CSSPropertyBackgroundRepeatY:
case CSSPropertyBackgroundSize:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderBottomLeftRadius:
case CSSPropertyBorderBottomRightRadius:
case CSSPropertyBorderBottomStyle:
case CSSPropertyBorderBottomWidth:
case CSSPropertyBorderCollapse:
case CSSPropertyBorderImageOutset:
case CSSPropertyBorderImageRepeat:
case CSSPropertyBorderImageSlice:
case CSSPropertyBorderImageSource:
case CSSPropertyBorderImageWidth:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderLeftStyle:
case CSSPropertyBorderLeftWidth:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderRightStyle:
case CSSPropertyBorderRightWidth:
case CSSPropertyBorderTopColor:
case CSSPropertyBorderTopLeftRadius:
case CSSPropertyBorderTopRightRadius:
case CSSPropertyBorderTopStyle:
case CSSPropertyBorderTopWidth:
case CSSPropertyBottom:
case CSSPropertyBoxSizing:
case CSSPropertyCaptionSide:
case CSSPropertyClear:
case CSSPropertyClip:
case CSSPropertyColor:
case CSSPropertyCounterIncrement:
case CSSPropertyCounterReset:
case CSSPropertyCursor:
case CSSPropertyDirection:
case CSSPropertyDisplay:
case CSSPropertyEmptyCells:
case CSSPropertyFloat:
case CSSPropertyFontSize:
case CSSPropertyFontStyle:
case CSSPropertyFontVariant:
case CSSPropertyFontWeight:
case CSSPropertyHeight:
case CSSPropertyImageRendering:
case CSSPropertyLeft:
case CSSPropertyLetterSpacing:
case CSSPropertyLineHeight:
case CSSPropertyListStyleImage:
case CSSPropertyListStylePosition:
case CSSPropertyListStyleType:
case CSSPropertyMarginBottom:
case CSSPropertyMarginLeft:
case CSSPropertyMarginRight:
case CSSPropertyMarginTop:
case CSSPropertyMaxHeight:
case CSSPropertyMaxWidth:
case CSSPropertyMinHeight:
case CSSPropertyMixBlendMode:
case CSSPropertyMinWidth:
case CSSPropertyOpacity:
case CSSPropertyOrphans:
case CSSPropertyOutlineColor:
case CSSPropertyOutlineOffset:
case CSSPropertyOutlineStyle:
case CSSPropertyOutlineWidth:
case CSSPropertyOverflowWrap:
case CSSPropertyOverflowX:
case CSSPropertyOverflowY:
case CSSPropertyPaddingBottom:
case CSSPropertyPaddingLeft:
case CSSPropertyPaddingRight:
case CSSPropertyPaddingTop:
case CSSPropertyPageBreakAfter:
case CSSPropertyPageBreakBefore:
case CSSPropertyPageBreakInside:
case CSSPropertyPointerEvents:
case CSSPropertyPosition:
case CSSPropertyResize:
case CSSPropertyRight:
case CSSPropertySize:
case CSSPropertySpeak:
case CSSPropertyTabSize:
case CSSPropertyTableLayout:
case CSSPropertyTextAlign:
case CSSPropertyTextDecoration:
case CSSPropertyTextIndent:
case CSSPropertyTextOverflow:
case CSSPropertyTextRendering:
case CSSPropertyTextTransform:
case CSSPropertyTop:
case CSSPropertyTouchAction:
case CSSPropertyUnicodeBidi:
case CSSPropertyVariable:
case CSSPropertyVerticalAlign:
case CSSPropertyVisibility:
case CSSPropertyWebkitAnimationDelay:
case CSSPropertyWebkitAnimationDirection:
case CSSPropertyWebkitAnimationDuration:
case CSSPropertyWebkitAnimationFillMode:
case CSSPropertyWebkitAnimationIterationCount:
case CSSPropertyWebkitAnimationName:
case CSSPropertyWebkitAnimationPlayState:
case CSSPropertyWebkitAnimationTimingFunction:
case CSSPropertyWebkitAppearance:
case CSSPropertyWebkitAspectRatio:
case CSSPropertyWebkitBackfaceVisibility:
case CSSPropertyWebkitBackgroundClip:
case CSSPropertyWebkitBackgroundComposite:
case CSSPropertyWebkitBackgroundOrigin:
case CSSPropertyWebkitBackgroundSize:
case CSSPropertyWebkitBorderFit:
case CSSPropertyWebkitBorderHorizontalSpacing:
case CSSPropertyWebkitBorderImage:
case CSSPropertyWebkitBorderVerticalSpacing:
case CSSPropertyWebkitBoxAlign:
case CSSPropertyWebkitBoxDecorationBreak:
case CSSPropertyWebkitBoxDirection:
case CSSPropertyWebkitBoxFlex:
case CSSPropertyWebkitBoxFlexGroup:
case CSSPropertyWebkitBoxLines:
case CSSPropertyWebkitBoxOrdinalGroup:
case CSSPropertyWebkitBoxOrient:
case CSSPropertyWebkitBoxPack:
case CSSPropertyWebkitColorCorrection:
case CSSPropertyWebkitColumnAxis:
case CSSPropertyWebkitColumnBreakAfter:
case CSSPropertyWebkitColumnBreakBefore:
case CSSPropertyWebkitColumnBreakInside:
case CSSPropertyWebkitColumnCount:
case CSSPropertyWebkitColumnGap:
case CSSPropertyWebkitColumnProgression:
case CSSPropertyWebkitColumnRuleColor:
case CSSPropertyWebkitColumnRuleStyle:
case CSSPropertyWebkitColumnRuleWidth:
case CSSPropertyWebkitColumnSpan:
case CSSPropertyWebkitColumnWidth:
case CSSPropertyWebkitAlignContent:
case CSSPropertyWebkitAlignItems:
case CSSPropertyWebkitAlignSelf:
case CSSPropertyWebkitFlexBasis:
case CSSPropertyWebkitFlexDirection:
case CSSPropertyWebkitFlexGrow:
case CSSPropertyWebkitFlexShrink:
case CSSPropertyWebkitFlexWrap:
case CSSPropertyWebkitJustifyContent:
case CSSPropertyWebkitOrder:
case CSSPropertyWebkitFlowFrom:
case CSSPropertyWebkitFlowInto:
case CSSPropertyWebkitFontKerning:
case CSSPropertyWebkitFontSmoothing:
case CSSPropertyWebkitFontVariantLigatures:
case CSSPropertyWebkitHighlight:
case CSSPropertyWebkitHyphenateCharacter:
case CSSPropertyWebkitHyphenateLimitAfter:
case CSSPropertyWebkitHyphenateLimitBefore:
case CSSPropertyWebkitHyphenateLimitLines:
case CSSPropertyWebkitHyphens:
case CSSPropertyWebkitLineAlign:
case CSSPropertyWebkitLineBreak:
case CSSPropertyWebkitLineClamp:
case CSSPropertyWebkitLineGrid:
case CSSPropertyWebkitLineSnap:
case CSSPropertyWebkitMarqueeDirection:
case CSSPropertyWebkitMarqueeIncrement:
case CSSPropertyWebkitMarqueeRepetition:
case CSSPropertyWebkitMarqueeSpeed:
case CSSPropertyWebkitMarqueeStyle:
case CSSPropertyWebkitMaskBoxImage:
case CSSPropertyWebkitMaskBoxImageOutset:
case CSSPropertyWebkitMaskBoxImageRepeat:
case CSSPropertyWebkitMaskBoxImageSlice:
case CSSPropertyWebkitMaskBoxImageSource:
case CSSPropertyWebkitMaskBoxImageWidth:
case CSSPropertyWebkitMaskClip:
case CSSPropertyWebkitMaskComposite:
case CSSPropertyWebkitMaskImage:
case CSSPropertyWebkitMaskOrigin:
case CSSPropertyWebkitMaskPositionX:
case CSSPropertyWebkitMaskPositionY:
case CSSPropertyWebkitMaskRepeatX:
case CSSPropertyWebkitMaskRepeatY:
case CSSPropertyWebkitMaskSize:
case CSSPropertyWebkitPerspectiveOrigin:
case CSSPropertyWebkitPerspectiveOriginX:
case CSSPropertyWebkitPerspectiveOriginY:
case CSSPropertyWebkitPrintColorAdjust:
case CSSPropertyWebkitRegionBreakAfter:
case CSSPropertyWebkitRegionBreakBefore:
case CSSPropertyWebkitRegionBreakInside:
case CSSPropertyWebkitRegionOverflow:
case CSSPropertyWebkitRtlOrdering:
case CSSPropertyWebkitRubyPosition:
case CSSPropertyWebkitTextCombine:
#if ENABLE(CSS3_TEXT)
case CSSPropertyWebkitTextDecorationLine:
case CSSPropertyWebkitTextDecorationStyle:
case CSSPropertyWebkitTextDecorationColor:
case CSSPropertyWebkitTextAlignLast:
case CSSPropertyWebkitTextUnderlinePosition:
#endif // CSS3_TEXT
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextEmphasisPosition:
case CSSPropertyWebkitTextEmphasisStyle:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextSecurity:
case CSSPropertyWebkitTextStrokeColor:
case CSSPropertyWebkitTransformOriginX:
case CSSPropertyWebkitTransformOriginY:
case CSSPropertyWebkitTransformOriginZ:
case CSSPropertyWebkitTransformStyle:
case CSSPropertyWebkitTransitionDelay:
case CSSPropertyWebkitTransitionDuration:
case CSSPropertyWebkitTransitionProperty:
case CSSPropertyWebkitTransitionTimingFunction:
case CSSPropertyWebkitUserDrag:
case CSSPropertyWebkitUserModify:
case CSSPropertyWebkitUserSelect:
case CSSPropertyWebkitClipPath:
case CSSPropertyWebkitWrapFlow:
case CSSPropertyWebkitShapeMargin:
case CSSPropertyWebkitShapePadding:
case CSSPropertyWebkitWrapThrough:
case CSSPropertyWebkitShapeInside:
case CSSPropertyWebkitShapeOutside:
case CSSPropertyWhiteSpace:
case CSSPropertyWidows:
case CSSPropertyWidth:
case CSSPropertyWordBreak:
case CSSPropertyWordSpacing:
case CSSPropertyWordWrap:
case CSSPropertyZIndex:
case CSSPropertyZoom:
#if ENABLE(CSS_DEVICE_ADAPTATION)
case CSSPropertyMaxZoom:
case CSSPropertyMinZoom:
case CSSPropertyOrientation:
case CSSPropertyUserZoom:
#endif
ASSERT_NOT_REACHED();
return;
default:
// Try the SVG properties
applySVGProperty(id, value);
return;
}
}
PassRefPtr<StyleImage> StyleResolver::styleImage(CSSPropertyID property, CSSValue* value)
{
if (value->isImageValue())
return cachedOrPendingFromValue(property, toCSSImageValue(value));
if (value->isImageGeneratorValue()) {
if (value->isGradientValue())
return generatedOrPendingFromValue(property, static_cast<CSSGradientValue*>(value)->gradientWithStylesResolved(this).get());
return generatedOrPendingFromValue(property, static_cast<CSSImageGeneratorValue*>(value));
}
if (value->isImageSetValue())
return setOrPendingFromValue(property, static_cast<CSSImageSetValue*>(value));
if (value->isCursorImageValue())
return cursorOrPendingFromValue(property, static_cast<CSSCursorImageValue*>(value));
return 0;
}
PassRefPtr<StyleImage> StyleResolver::cachedOrPendingFromValue(CSSPropertyID property, CSSImageValue* value)
{
RefPtr<StyleImage> image = value->cachedOrPendingImage();
if (image && image->isPendingImage())
m_state.pendingImageProperties().set(property, value);
return image.release();
}
PassRefPtr<StyleImage> StyleResolver::generatedOrPendingFromValue(CSSPropertyID property, CSSImageGeneratorValue* value)
{
if (value->isPending()) {
m_state.pendingImageProperties().set(property, value);
return StylePendingImage::create(value);
}
return StyleGeneratedImage::create(value);
}
PassRefPtr<StyleImage> StyleResolver::setOrPendingFromValue(CSSPropertyID property, CSSImageSetValue* value)
{
RefPtr<StyleImage> image = value->cachedOrPendingImageSet(document());
if (image && image->isPendingImage())
m_state.pendingImageProperties().set(property, value);
return image.release();
}
PassRefPtr<StyleImage> StyleResolver::cursorOrPendingFromValue(CSSPropertyID property, CSSCursorImageValue* value)
{
RefPtr<StyleImage> image = value->cachedOrPendingImage(document());
if (image && image->isPendingImage())
m_state.pendingImageProperties().set(property, value);
return image.release();
}
void StyleResolver::checkForZoomChange(RenderStyle* style, RenderStyle* parentStyle)
{
if (style->effectiveZoom() == parentStyle->effectiveZoom())
return;
const FontDescription& childFont = style->fontDescription();
FontDescription newFontDescription(childFont);
setFontSize(newFontDescription, childFont.specifiedSize());
style->setFontDescription(newFontDescription);
}
void StyleResolver::checkForGenericFamilyChange(RenderStyle* style, RenderStyle* parentStyle)
{
const FontDescription& childFont = style->fontDescription();
if (childFont.isAbsoluteSize() || !parentStyle)
return;
const FontDescription& parentFont = parentStyle->fontDescription();
if (childFont.useFixedDefaultSize() == parentFont.useFixedDefaultSize())
return;
// For now, lump all families but monospace together.
if (childFont.genericFamily() != FontDescription::MonospaceFamily
&& parentFont.genericFamily() != FontDescription::MonospaceFamily)
return;
// We know the parent is monospace or the child is monospace, and that font
// size was unspecified. We want to scale our font size as appropriate.
// If the font uses a keyword size, then we refetch from the table rather than
// multiplying by our scale factor.
float size;
if (childFont.keywordSize())
size = fontSizeForKeyword(document(), CSSValueXxSmall + childFont.keywordSize() - 1, childFont.useFixedDefaultSize());
else {
Settings* settings = documentSettings();
float fixedScaleFactor = (settings && settings->defaultFixedFontSize() && settings->defaultFontSize())
? static_cast<float>(settings->defaultFixedFontSize()) / settings->defaultFontSize()
: 1;
size = parentFont.useFixedDefaultSize() ?
childFont.specifiedSize() / fixedScaleFactor :
childFont.specifiedSize() * fixedScaleFactor;
}
FontDescription newFontDescription(childFont);
setFontSize(newFontDescription, size);
style->setFontDescription(newFontDescription);
}
void StyleResolver::initializeFontStyle(Settings* settings)
{
FontDescription fontDescription;
fontDescription.setGenericFamily(FontDescription::StandardFamily);
fontDescription.setRenderingMode(settings->fontRenderingMode());
fontDescription.setUsePrinterFont(document()->printing());
const AtomicString& standardFontFamily = documentSettings()->standardFontFamily();
if (!standardFontFamily.isEmpty()) {
fontDescription.firstFamily().setFamily(standardFontFamily);
fontDescription.firstFamily().appendFamily(0);
}
fontDescription.setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
setFontSize(fontDescription, fontSizeForKeyword(document(), CSSValueMedium, false));
m_state.style()->setLineHeight(RenderStyle::initialLineHeight());
m_state.setLineHeightValue(0);
setFontDescription(fontDescription);
}
void StyleResolver::setFontSize(FontDescription& fontDescription, float size)
{
fontDescription.setSpecifiedSize(size);
fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(document(), m_state.style(), fontDescription.isAbsoluteSize(), size, useSVGZoomRules()));
}
float StyleResolver::getComputedSizeFromSpecifiedSize(Document* document, RenderStyle* style, bool isAbsoluteSize, float specifiedSize, bool useSVGZoomRules)
{
float zoomFactor = 1.0f;
if (!useSVGZoomRules) {
zoomFactor = style->effectiveZoom();
if (Frame* frame = document->frame())
zoomFactor *= frame->textZoomFactor();
}
return StyleResolver::getComputedSizeFromSpecifiedSize(document, zoomFactor, isAbsoluteSize, specifiedSize);
}
float StyleResolver::getComputedSizeFromSpecifiedSize(Document* document, float zoomFactor, bool isAbsoluteSize, float specifiedSize, ESmartMinimumForFontSize useSmartMinimumForFontSize)
{
// Text with a 0px font size should not be visible and therefore needs to be
// exempt from minimum font size rules. Acid3 relies on this for pixel-perfect
// rendering. This is also compatible with other browsers that have minimum
// font size settings (e.g. Firefox).
if (fabsf(specifiedSize) < std::numeric_limits<float>::epsilon())
return 0.0f;
// We support two types of minimum font size. The first is a hard override that applies to
// all fonts. This is "minSize." The second type of minimum font size is a "smart minimum"
// that is applied only when the Web page can't know what size it really asked for, e.g.,
// when it uses logical sizes like "small" or expresses the font-size as a percentage of
// the user's default font setting.
// With the smart minimum, we never want to get smaller than the minimum font size to keep fonts readable.
// However we always allow the page to set an explicit pixel size that is smaller,
// since sites will mis-render otherwise (e.g., http://www.gamespot.com with a 9px minimum).
Settings* settings = document->settings();
if (!settings)
return 1.0f;
int minSize = settings->minimumFontSize();
int minLogicalSize = settings->minimumLogicalFontSize();
float zoomedSize = specifiedSize * zoomFactor;
// Apply the hard minimum first. We only apply the hard minimum if after zooming we're still too small.
if (zoomedSize < minSize)
zoomedSize = minSize;
// Now apply the "smart minimum." This minimum is also only applied if we're still too small
// after zooming. The font size must either be relative to the user default or the original size
// must have been acceptable. In other words, we only apply the smart minimum whenever we're positive
// doing so won't disrupt the layout.
if (useSmartMinimumForFontSize && zoomedSize < minLogicalSize && (specifiedSize >= minLogicalSize || !isAbsoluteSize))
zoomedSize = minLogicalSize;
// Also clamp to a reasonable maximum to prevent insane font sizes from causing crashes on various
// platforms (I'm looking at you, Windows.)
return min(maximumAllowedFontSize, zoomedSize);
}
const int fontSizeTableMax = 16;
const int fontSizeTableMin = 9;
const int totalKeywords = 8;
// WinIE/Nav4 table for font sizes. Designed to match the legacy font mapping system of HTML.
static const int quirksFontSizeTable[fontSizeTableMax - fontSizeTableMin + 1][totalKeywords] =
{
{ 9, 9, 9, 9, 11, 14, 18, 28 },
{ 9, 9, 9, 10, 12, 15, 20, 31 },
{ 9, 9, 9, 11, 13, 17, 22, 34 },
{ 9, 9, 10, 12, 14, 18, 24, 37 },
{ 9, 9, 10, 13, 16, 20, 26, 40 }, // fixed font default (13)
{ 9, 9, 11, 14, 17, 21, 28, 42 },
{ 9, 10, 12, 15, 17, 23, 30, 45 },
{ 9, 10, 13, 16, 18, 24, 32, 48 } // proportional font default (16)
};
// HTML 1 2 3 4 5 6 7
// CSS xxs xs s m l xl xxl
// |
// user pref
// Strict mode table matches MacIE and Mozilla's settings exactly.
static const int strictFontSizeTable[fontSizeTableMax - fontSizeTableMin + 1][totalKeywords] =
{
{ 9, 9, 9, 9, 11, 14, 18, 27 },
{ 9, 9, 9, 10, 12, 15, 20, 30 },
{ 9, 9, 10, 11, 13, 17, 22, 33 },
{ 9, 9, 10, 12, 14, 18, 24, 36 },
{ 9, 10, 12, 13, 16, 20, 26, 39 }, // fixed font default (13)
{ 9, 10, 12, 14, 17, 21, 28, 42 },
{ 9, 10, 13, 15, 18, 23, 30, 45 },
{ 9, 10, 13, 16, 18, 24, 32, 48 } // proportional font default (16)
};
// HTML 1 2 3 4 5 6 7
// CSS xxs xs s m l xl xxl
// |
// user pref
// For values outside the range of the table, we use Todd Fahrner's suggested scale
// factors for each keyword value.
static const float fontSizeFactors[totalKeywords] = { 0.60f, 0.75f, 0.89f, 1.0f, 1.2f, 1.5f, 2.0f, 3.0f };
float StyleResolver::fontSizeForKeyword(Document* document, int keyword, bool shouldUseFixedDefaultSize)
{
Settings* settings = document->settings();
if (!settings)
return 1.0f;
bool quirksMode = document->inQuirksMode();
int mediumSize = shouldUseFixedDefaultSize ? settings->defaultFixedFontSize() : settings->defaultFontSize();
if (mediumSize >= fontSizeTableMin && mediumSize <= fontSizeTableMax) {
// Look up the entry in the table.
int row = mediumSize - fontSizeTableMin;
int col = (keyword - CSSValueXxSmall);
return quirksMode ? quirksFontSizeTable[row][col] : strictFontSizeTable[row][col];
}
// Value is outside the range of the table. Apply the scale factor instead.
float minLogicalSize = max(settings->minimumLogicalFontSize(), 1);
return max(fontSizeFactors[keyword - CSSValueXxSmall]*mediumSize, minLogicalSize);
}
template<typename T>
static int findNearestLegacyFontSize(int pixelFontSize, const T* table, int multiplier)
{
// Ignore table[0] because xx-small does not correspond to any legacy font size.
for (int i = 1; i < totalKeywords - 1; i++) {
if (pixelFontSize * 2 < (table[i] + table[i + 1]) * multiplier)
return i;
}
return totalKeywords - 1;
}
int StyleResolver::legacyFontSize(Document* document, int pixelFontSize, bool shouldUseFixedDefaultSize)
{
Settings* settings = document->settings();
if (!settings)
return 1;
bool quirksMode = document->inQuirksMode();
int mediumSize = shouldUseFixedDefaultSize ? settings->defaultFixedFontSize() : settings->defaultFontSize();
if (mediumSize >= fontSizeTableMin && mediumSize <= fontSizeTableMax) {
int row = mediumSize - fontSizeTableMin;
return findNearestLegacyFontSize<int>(pixelFontSize, quirksMode ? quirksFontSizeTable[row] : strictFontSizeTable[row], 1);
}
return findNearestLegacyFontSize<float>(pixelFontSize, fontSizeFactors, mediumSize);
}
bool StyleResolver::colorFromPrimitiveValueIsDerivedFromElement(CSSPrimitiveValue* value)
{
int ident = value->getIdent();
switch (ident) {
case CSSValueWebkitText:
case CSSValueWebkitLink:
case CSSValueWebkitActivelink:
case CSSValueCurrentcolor:
return true;
default:
return false;
}
}
void StyleResolver::addViewportDependentMediaQueryResult(const MediaQueryExp* expr, bool result)
{
m_viewportDependentMediaQueryResults.append(adoptPtr(new MediaQueryResult(*expr, result)));
}
bool StyleResolver::affectedByViewportChange() const
{
unsigned s = m_viewportDependentMediaQueryResults.size();
for (unsigned i = 0; i < s; i++) {
if (m_medium->eval(&m_viewportDependentMediaQueryResults[i]->m_expression) != m_viewportDependentMediaQueryResults[i]->m_result)
return true;
}
return false;
}
void StyleResolver::loadPendingSVGDocuments()
{
StyleResolverState& state = m_state;
if (!state.style()->hasFilter() || state.pendingSVGDocuments().isEmpty())
return;
CachedResourceLoader* cachedResourceLoader = state.document()->cachedResourceLoader();
Vector<RefPtr<FilterOperation> >& filterOperations = state.style()->mutableFilter().operations();
for (unsigned i = 0; i < filterOperations.size(); ++i) {
RefPtr<FilterOperation> filterOperation = filterOperations.at(i);
if (filterOperation->getOperationType() == FilterOperation::REFERENCE) {
ReferenceFilterOperation* referenceFilter = static_cast<ReferenceFilterOperation*>(filterOperation.get());
WebKitCSSSVGDocumentValue* value = state.pendingSVGDocuments().get(referenceFilter);
if (!value)
continue;
CachedDocument* cachedDocument = value->load(cachedResourceLoader);
if (!cachedDocument)
continue;
// Stash the CachedDocument on the reference filter.
referenceFilter->setCachedSVGDocumentReference(adoptPtr(new CachedSVGDocumentReference(cachedDocument)));
}
}
state.pendingSVGDocuments().clear();
}
void StyleResolver::loadPendingShaders()
{
if (!m_state.style()->hasFilter() || !m_state.hasPendingShaders())
return;
CachedResourceLoader* cachedResourceLoader = m_state.document()->cachedResourceLoader();
Vector<RefPtr<FilterOperation> >& filterOperations = m_state.style()->mutableFilter().operations();
for (unsigned i = 0; i < filterOperations.size(); ++i) {
RefPtr<FilterOperation> filterOperation = filterOperations.at(i);
if (filterOperation->getOperationType() == FilterOperation::CUSTOM) {
CustomFilterOperation* customFilter = static_cast<CustomFilterOperation*>(filterOperation.get());
ASSERT(customFilter->program());
StyleCustomFilterProgram* program = static_cast<StyleCustomFilterProgram*>(customFilter->program());
// Note that the StylePendingShaders could be already resolved to StyleCachedShaders. That's because the rule was matched before.
// However, the StyleCustomFilterProgram that was initially created could have been removed from the cache in the meanwhile,
// meaning that we get a new StyleCustomFilterProgram here that is not yet in the cache, but already has loaded StyleShaders.
if (!program->hasPendingShaders() && program->inCache())
continue;
if (!m_customFilterProgramCache)
m_customFilterProgramCache = adoptPtr(new StyleCustomFilterProgramCache());
RefPtr<StyleCustomFilterProgram> styleProgram = m_customFilterProgramCache->lookup(program);
if (styleProgram.get())
customFilter->setProgram(styleProgram.release());
else {
if (program->vertexShader() && program->vertexShader()->isPendingShader()) {
WebKitCSSShaderValue* shaderValue = static_cast<StylePendingShader*>(program->vertexShader())->cssShaderValue();
program->setVertexShader(shaderValue->cachedShader(cachedResourceLoader));
}
if (program->fragmentShader() && program->fragmentShader()->isPendingShader()) {
WebKitCSSShaderValue* shaderValue = static_cast<StylePendingShader*>(program->fragmentShader())->cssShaderValue();
program->setFragmentShader(shaderValue->cachedShader(cachedResourceLoader));
}
m_customFilterProgramCache->add(program);
}
}
}
m_state.setHasPendingShaders(false);
}
PassRefPtr<StyleImage> StyleResolver::loadPendingImage(StylePendingImage* pendingImage)
{
CachedResourceLoader* cachedResourceLoader = m_state.document()->cachedResourceLoader();
if (pendingImage->cssImageValue()) {
CSSImageValue* imageValue = pendingImage->cssImageValue();
return imageValue->cachedImage(cachedResourceLoader);
}
if (pendingImage->cssImageGeneratorValue()) {
CSSImageGeneratorValue* imageGeneratorValue = pendingImage->cssImageGeneratorValue();
imageGeneratorValue->loadSubimages(cachedResourceLoader);
return StyleGeneratedImage::create(imageGeneratorValue);
}
if (pendingImage->cssCursorImageValue()) {
CSSCursorImageValue* cursorImageValue = pendingImage->cssCursorImageValue();
return cursorImageValue->cachedImage(cachedResourceLoader);
}
if (pendingImage->cssImageSetValue()) {
CSSImageSetValue* imageSetValue = pendingImage->cssImageSetValue();
return imageSetValue->cachedImageSet(cachedResourceLoader);
}
return 0;
}
void StyleResolver::loadPendingImages()
{
if (m_state.pendingImageProperties().isEmpty())
return;
PendingImagePropertyMap::const_iterator::Keys end = m_state.pendingImageProperties().end().keys();
for (PendingImagePropertyMap::const_iterator::Keys it = m_state.pendingImageProperties().begin().keys(); it != end; ++it) {
CSSPropertyID currentProperty = *it;
switch (currentProperty) {
case CSSPropertyBackgroundImage: {
for (FillLayer* backgroundLayer = m_state.style()->accessBackgroundLayers(); backgroundLayer; backgroundLayer = backgroundLayer->next()) {
if (backgroundLayer->image() && backgroundLayer->image()->isPendingImage())
backgroundLayer->setImage(loadPendingImage(static_cast<StylePendingImage*>(backgroundLayer->image())));
}
break;
}
case CSSPropertyContent: {
for (ContentData* contentData = const_cast<ContentData*>(m_state.style()->contentData()); contentData; contentData = contentData->next()) {
if (contentData->isImage()) {
StyleImage* image = static_cast<ImageContentData*>(contentData)->image();
if (image->isPendingImage()) {
RefPtr<StyleImage> loadedImage = loadPendingImage(static_cast<StylePendingImage*>(image));
if (loadedImage)
static_cast<ImageContentData*>(contentData)->setImage(loadedImage.release());
}
}
}
break;
}
case CSSPropertyCursor: {
if (CursorList* cursorList = m_state.style()->cursors()) {
for (size_t i = 0; i < cursorList->size(); ++i) {
CursorData& currentCursor = cursorList->at(i);
if (StyleImage* image = currentCursor.image()) {
if (image->isPendingImage())
currentCursor.setImage(loadPendingImage(static_cast<StylePendingImage*>(image)));
}
}
}
break;
}
case CSSPropertyListStyleImage: {
if (m_state.style()->listStyleImage() && m_state.style()->listStyleImage()->isPendingImage())
m_state.style()->setListStyleImage(loadPendingImage(static_cast<StylePendingImage*>(m_state.style()->listStyleImage())));
break;
}
case CSSPropertyBorderImageSource: {
if (m_state.style()->borderImageSource() && m_state.style()->borderImageSource()->isPendingImage())
m_state.style()->setBorderImageSource(loadPendingImage(static_cast<StylePendingImage*>(m_state.style()->borderImageSource())));
break;
}
case CSSPropertyWebkitBoxReflect: {
if (StyleReflection* reflection = m_state.style()->boxReflect()) {
const NinePieceImage& maskImage = reflection->mask();
if (maskImage.image() && maskImage.image()->isPendingImage()) {
RefPtr<StyleImage> loadedImage = loadPendingImage(static_cast<StylePendingImage*>(maskImage.image()));
reflection->setMask(NinePieceImage(loadedImage.release(), maskImage.imageSlices(), maskImage.fill(), maskImage.borderSlices(), maskImage.outset(), maskImage.horizontalRule(), maskImage.verticalRule()));
}
}
break;
}
case CSSPropertyWebkitMaskBoxImageSource: {
if (m_state.style()->maskBoxImageSource() && m_state.style()->maskBoxImageSource()->isPendingImage())
m_state.style()->setMaskBoxImageSource(loadPendingImage(static_cast<StylePendingImage*>(m_state.style()->maskBoxImageSource())));
break;
}
case CSSPropertyWebkitMaskImage: {
for (FillLayer* maskLayer = m_state.style()->accessMaskLayers(); maskLayer; maskLayer = maskLayer->next()) {
if (maskLayer->image() && maskLayer->image()->isPendingImage())
maskLayer->setImage(loadPendingImage(static_cast<StylePendingImage*>(maskLayer->image())));
}
break;
}
default:
ASSERT_NOT_REACHED();
}
}
m_state.pendingImageProperties().clear();
}
void StyleResolver::loadPendingResources()
{
// Start loading images referenced by this style.
loadPendingImages();
// Start loading the shaders referenced by this style.
loadPendingShaders();
// Start loading the SVG Documents referenced by this style.
loadPendingSVGDocuments();
}
inline StyleResolver::MatchedProperties::MatchedProperties()
: possiblyPaddedMember(0)
{
}
inline StyleResolver::MatchedProperties::~MatchedProperties()
{
}
void StyleResolver::MatchedProperties::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(properties, "properties");
}
void StyleResolver::MatchedPropertiesCacheItem::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(matchedProperties, "matchedProperties");
info.addMember(ranges, "ranges");
info.addMember(renderStyle, "renderStyle");
info.addMember(parentRenderStyle, "parentRenderStyle");
}
void MediaQueryResult::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(m_expression, "expression");
}
void StyleResolver::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(m_ruleSets, "ruleSets");
info.addMember(m_matchedPropertiesCache, "matchedPropertiesCache");
info.addMember(m_matchedPropertiesCacheSweepTimer, "matchedPropertiesCacheSweepTimer");
info.addMember(m_medium, "medium");
info.addMember(m_rootDefaultStyle, "rootDefaultStyle");
info.addMember(m_document, "document");
info.addMember(m_fontSelector, "fontSelector");
info.addMember(m_viewportDependentMediaQueryResults, "viewportDependentMediaQueryResults");
info.ignoreMember(m_styleBuilder);
info.addMember(m_inspectorCSSOMWrappers);
info.addMember(m_styleTree, "scopedStyleTree");
info.addMember(m_state, "state");
// FIXME: move this to a place where it would be called only once?
info.addMember(CSSDefaultStyleSheets::defaultStyle, "defaultStyle");
info.addMember(CSSDefaultStyleSheets::defaultQuirksStyle, "defaultQuirksStyle");
info.addMember(CSSDefaultStyleSheets::defaultPrintStyle, "defaultPrintStyle");
info.addMember(CSSDefaultStyleSheets::defaultViewSourceStyle, "defaultViewSourceStyle");
}
} // namespace WebCore