bool SelectorChecker::checkOne(const SelectorCheckingContext& context) const
{
Element* const & element = context.element;
const CSSSelector* const & selector = context.selector;
ASSERT(element);
ASSERT(selector);
if (selector->m_match == CSSSelector::Tag)
return SelectorChecker::tagMatches(element, selector->tagQName());
if (selector->m_match == CSSSelector::Class)
return element->hasClass() && element->classNames().contains(selector->value());
if (selector->m_match == CSSSelector::Id)
return element->hasID() && element->idForStyleResolution() == selector->value();
if (selector->isAttributeSelector()) {
const QualifiedName& attr = selector->attribute();
if (!element->hasAttributes())
return false;
bool caseSensitive = !m_documentIsHTML || HTMLDocument::isCaseSensitiveAttribute(attr);
if (!anyAttributeMatches(element, static_cast<CSSSelector::Match>(selector->m_match), attr, selector->value(), caseSensitive))
return false;
}
if (selector->m_match == CSSSelector::PseudoClass) {
// Handle :not up front.
if (selector->pseudoType() == CSSSelector::PseudoNot) {
const CSSSelectorList* selectorList = selector->selectorList();
// FIXME: We probably should fix the parser and make it never produce :not rules with missing selector list.
if (!selectorList)
return false;
SelectorCheckingContext subContext(context);
subContext.isSubSelector = true;
for (subContext.selector = selectorList->first(); subContext.selector; subContext.selector = subContext.selector->tagHistory()) {
// :not cannot nest. I don't really know why this is a
// restriction in CSS3, but it is, so let's honor it.
// the parser enforces that this never occurs
ASSERT(subContext.selector->pseudoType() != CSSSelector::PseudoNot);
// We select between :visited and :link when applying. We don't know which one applied (or not) yet.
if (subContext.selector->pseudoType() == CSSSelector::PseudoVisited || (subContext.selector->pseudoType() == CSSSelector::PseudoLink && subContext.visitedMatchType == VisitedMatchEnabled))
return true;
if (!checkOne(subContext))
return true;
}
} else if (context.hasScrollbarPseudo) {
// CSS scrollbars match a specific subset of pseudo classes, and they have specialized rules for each
// (since there are no elements involved).
return checkScrollbarPseudoClass(context, element->document(), selector);
} else if (context.hasSelectionPseudo) {
if (selector->pseudoType() == CSSSelector::PseudoWindowInactive)
return !element->document()->page()->focusController()->isActive();
}
// Normal element pseudo class checking.
switch (selector->pseudoType()) {
// Pseudo classes:
case CSSSelector::PseudoNot:
break; // Already handled up above.
case CSSSelector::PseudoEmpty:
{
bool result = true;
for (Node* n = element->firstChild(); n; n = n->nextSibling()) {
if (n->isElementNode()) {
result = false;
break;
}
if (n->isTextNode()) {
Text* textNode = toText(n);
if (!textNode->data().isEmpty()) {
result = false;
break;
}
}
}
if (m_mode == ResolvingStyle) {
element->setStyleAffectedByEmpty();
if (context.elementStyle)
context.elementStyle->setEmptyState(result);
else if (element->renderStyle() && (element->document()->styleSheetCollection()->usesSiblingRules() || element->renderStyle()->unique()))
element->renderStyle()->setEmptyState(result);
}
return result;
}
case CSSSelector::PseudoFirstChild:
// first-child matches the first child that is an element
if (Element* parentElement = element->parentElement()) {
bool result = isFirstChildElement(element);
if (m_mode == ResolvingStyle) {
RenderStyle* childStyle = context.elementStyle ? context.elementStyle : element->renderStyle();
parentElement->setChildrenAffectedByFirstChildRules();
if (result && childStyle)
childStyle->setFirstChildState();
}
return result;
}
break;
case CSSSelector::PseudoFirstOfType:
// first-of-type matches the first element of its type
if (Element* parentElement = element->parentElement()) {
bool result = isFirstOfType(element, element->tagQName());
if (m_mode == ResolvingStyle)
parentElement->setChildrenAffectedByForwardPositionalRules();
return result;
}
break;
case CSSSelector::PseudoLastChild:
// last-child matches the last child that is an element
if (Element* parentElement = element->parentElement()) {
bool result = parentElement->isFinishedParsingChildren() && isLastChildElement(element);
if (m_mode == ResolvingStyle) {
RenderStyle* childStyle = context.elementStyle ? context.elementStyle : element->renderStyle();
parentElement->setChildrenAffectedByLastChildRules();
if (result && childStyle)
childStyle->setLastChildState();
}
return result;
}
break;
case CSSSelector::PseudoLastOfType:
// last-of-type matches the last element of its type
if (Element* parentElement = element->parentElement()) {
if (m_mode == ResolvingStyle)
parentElement->setChildrenAffectedByBackwardPositionalRules();
if (!parentElement->isFinishedParsingChildren())
return false;
return isLastOfType(element, element->tagQName());
}
break;
case CSSSelector::PseudoOnlyChild:
if (Element* parentElement = element->parentElement()) {
bool firstChild = isFirstChildElement(element);
bool onlyChild = firstChild && parentElement->isFinishedParsingChildren() && isLastChildElement(element);
if (m_mode == ResolvingStyle) {
RenderStyle* childStyle = context.elementStyle ? context.elementStyle : element->renderStyle();
parentElement->setChildrenAffectedByFirstChildRules();
parentElement->setChildrenAffectedByLastChildRules();
if (firstChild && childStyle)
childStyle->setFirstChildState();
if (onlyChild && childStyle)
childStyle->setLastChildState();
}
return onlyChild;
}
break;
case CSSSelector::PseudoOnlyOfType:
// FIXME: This selector is very slow.
if (Element* parentElement = element->parentElement()) {
if (m_mode == ResolvingStyle) {
parentElement->setChildrenAffectedByForwardPositionalRules();
parentElement->setChildrenAffectedByBackwardPositionalRules();
}
if (!parentElement->isFinishedParsingChildren())
return false;
return isFirstOfType(element, element->tagQName()) && isLastOfType(element, element->tagQName());
}
break;
case CSSSelector::PseudoNthChild:
if (!selector->parseNth())
break;
if (Element* parentElement = element->parentElement()) {
int count = 1 + countElementsBefore(element);
if (m_mode == ResolvingStyle) {
RenderStyle* childStyle = context.elementStyle ? context.elementStyle : element->renderStyle();
element->setChildIndex(count);
if (childStyle)
childStyle->setUnique();
parentElement->setChildrenAffectedByForwardPositionalRules();
}
if (selector->matchNth(count))
return true;
}
break;
case CSSSelector::PseudoNthOfType:
if (!selector->parseNth())
break;
if (Element* parentElement = element->parentElement()) {
int count = 1 + countElementsOfTypeBefore(element, element->tagQName());
if (m_mode == ResolvingStyle)
parentElement->setChildrenAffectedByForwardPositionalRules();
if (selector->matchNth(count))
return true;
}
break;
case CSSSelector::PseudoNthLastChild:
if (!selector->parseNth())
break;
if (Element* parentElement = element->parentElement()) {
if (m_mode == ResolvingStyle)
parentElement->setChildrenAffectedByBackwardPositionalRules();
if (!parentElement->isFinishedParsingChildren())
return false;
int count = 1 + countElementsAfter(element);
if (selector->matchNth(count))
return true;
}
break;
case CSSSelector::PseudoNthLastOfType:
if (!selector->parseNth())
break;
if (Element* parentElement = element->parentElement()) {
if (m_mode == ResolvingStyle)
parentElement->setChildrenAffectedByBackwardPositionalRules();
if (!parentElement->isFinishedParsingChildren())
return false;
int count = 1 + countElementsOfTypeAfter(element, element->tagQName());
if (selector->matchNth(count))
return true;
}
break;
case CSSSelector::PseudoTarget:
if (element == element->document()->cssTarget())
return true;
break;
case CSSSelector::PseudoAny:
{
SelectorCheckingContext subContext(context);
subContext.isSubSelector = true;
PseudoId ignoreDynamicPseudo = NOPSEUDO;
for (subContext.selector = selector->selectorList()->first(); subContext.selector; subContext.selector = CSSSelectorList::next(subContext.selector)) {
if (match(subContext, ignoreDynamicPseudo) == SelectorMatches)
return true;
}
}
break;
case CSSSelector::PseudoAutofill:
if (!element->isFormControlElement())
break;
if (HTMLInputElement* inputElement = element->toInputElement())
return inputElement->isAutofilled();
break;
case CSSSelector::PseudoAnyLink:
case CSSSelector::PseudoLink:
// :visited and :link matches are separated later when applying the style. Here both classes match all links...
return element->isLink();
case CSSSelector::PseudoVisited:
// ...except if :visited matching is disabled for ancestor/sibling matching.
return element->isLink() && context.visitedMatchType == VisitedMatchEnabled;
case CSSSelector::PseudoDrag:
if (m_mode == ResolvingStyle) {
if (context.elementStyle)
context.elementStyle->setAffectedByDrag();
else
element->setChildrenAffectedByDrag(true);
}
if (element->renderer() && element->renderer()->isDragging())
return true;
break;
case CSSSelector::PseudoFocus:
return matchesFocusPseudoClass(element);
case CSSSelector::PseudoHover:
// If we're in quirks mode, then hover should never match anchors with no
// href and *:hover should not match anything. This is important for sites like wsj.com.
if (m_strictParsing || context.isSubSelector || (selector->m_match == CSSSelector::Tag && selector->tagQName() != anyQName() && !isHTMLAnchorElement(element)) || element->isLink()) {
if (m_mode == ResolvingStyle) {
if (context.elementStyle)
context.elementStyle->setAffectedByHover();
else
element->setChildrenAffectedByHover(true);
}
if (element->hovered() || InspectorInstrumentation::forcePseudoState(element, CSSSelector::PseudoHover))
return true;
}
break;
case CSSSelector::PseudoActive:
// If we're in quirks mode, then :active should never match anchors with no
// href and *:active should not match anything.
if (m_strictParsing || context.isSubSelector || (selector->m_match == CSSSelector::Tag && selector->tagQName() != anyQName() && !isHTMLAnchorElement(element)) || element->isLink()) {
if (m_mode == ResolvingStyle) {
if (context.elementStyle)
context.elementStyle->setAffectedByActive();
else
element->setChildrenAffectedByActive(true);
}
if (element->active() || InspectorInstrumentation::forcePseudoState(element, CSSSelector::PseudoActive))
return true;
}
break;
case CSSSelector::PseudoEnabled:
if (element->isFormControlElement() || isHTMLOptionElement(element) || isHTMLOptGroupElement(element))
return !element->isDisabledFormControl();
break;
case CSSSelector::PseudoFullPageMedia:
return element->document() && element->document()->isMediaDocument();
break;
case CSSSelector::PseudoDefault:
return element->isDefaultButtonForForm();
case CSSSelector::PseudoDisabled:
if (element->isFormControlElement() || isHTMLOptionElement(element) || isHTMLOptGroupElement(element))
return element->isDisabledFormControl();
break;
case CSSSelector::PseudoReadOnly:
return element->matchesReadOnlyPseudoClass();
case CSSSelector::PseudoReadWrite:
return element->matchesReadWritePseudoClass();
case CSSSelector::PseudoOptional:
return element->isOptionalFormControl();
case CSSSelector::PseudoRequired:
return element->isRequiredFormControl();
case CSSSelector::PseudoValid:
element->document()->setContainsValidityStyleRules();
return element->willValidate() && element->isValidFormControlElement();
case CSSSelector::PseudoInvalid:
element->document()->setContainsValidityStyleRules();
return element->willValidate() && !element->isValidFormControlElement();
case CSSSelector::PseudoChecked:
{
// Even though WinIE allows checked and indeterminate to co-exist, the CSS selector spec says that
// you can't be both checked and indeterminate. We will behave like WinIE behind the scenes and just
// obey the CSS spec here in the test for matching the pseudo.
HTMLInputElement* inputElement = element->toInputElement();
if (inputElement && inputElement->shouldAppearChecked() && !inputElement->shouldAppearIndeterminate())
return true;
if (isHTMLOptionElement(element) && toHTMLOptionElement(element)->selected())
return true;
break;
}
case CSSSelector::PseudoIndeterminate:
return element->shouldAppearIndeterminate();
case CSSSelector::PseudoRoot:
if (element == element->document()->documentElement())
return true;
break;
case CSSSelector::PseudoLang:
{
AtomicString value;
#if ENABLE(VIDEO_TRACK)
if (element->isWebVTTElement())
value = toWebVTTElement(element)->language();
else
#endif
value = element->computeInheritedLanguage();
const AtomicString& argument = selector->argument();
if (value.isEmpty() || !value.startsWith(argument, false))
break;
if (value.length() != argument.length() && value[argument.length()] != '-')
break;
return true;
}
#if ENABLE(FULLSCREEN_API)
case CSSSelector::PseudoFullScreen:
// While a Document is in the fullscreen state, and the document's current fullscreen
// element is an element in the document, the 'full-screen' pseudoclass applies to
// that element. Also, an <iframe>, <object> or <embed> element whose child browsing
// context's Document is in the fullscreen state has the 'full-screen' pseudoclass applied.
if (element->isFrameElementBase() && element->containsFullScreenElement())
return true;
if (!element->document()->webkitIsFullScreen())
return false;
return element == element->document()->webkitCurrentFullScreenElement();
case CSSSelector::PseudoAnimatingFullScreenTransition:
if (element != element->document()->webkitCurrentFullScreenElement())
return false;
return element->document()->isAnimatingFullScreen();
case CSSSelector::PseudoFullScreenAncestor:
return element->containsFullScreenElement();
case CSSSelector::PseudoFullScreenDocument:
// While a Document is in the fullscreen state, the 'full-screen-document' pseudoclass applies
// to all elements of that Document.
if (!element->document()->webkitIsFullScreen())
return false;
return true;
#endif
#if ENABLE(IFRAME_SEAMLESS)
case CSSSelector::PseudoSeamlessDocument:
// While a document is rendered in a seamless iframe, the 'seamless-document' pseudoclass applies
// to all elements of that Document.
return element->document()->shouldDisplaySeamlesslyWithParent();
#endif
case CSSSelector::PseudoInRange:
element->document()->setContainsValidityStyleRules();
return element->isInRange();
case CSSSelector::PseudoOutOfRange:
element->document()->setContainsValidityStyleRules();
return element->isOutOfRange();
#if ENABLE(VIDEO_TRACK)
case CSSSelector::PseudoFutureCue:
return (element->isWebVTTElement() && !toWebVTTElement(element)->isPastNode());
case CSSSelector::PseudoPastCue:
return (element->isWebVTTElement() && toWebVTTElement(element)->isPastNode());
#endif
case CSSSelector::PseudoScope:
{
const Node* contextualReferenceNode = !context.scope || context.behaviorAtBoundary == CrossesBoundary ? element->document()->documentElement() : context.scope;
if (element == contextualReferenceNode)
return true;
break;
}
case CSSSelector::PseudoHorizontal:
case CSSSelector::PseudoVertical:
case CSSSelector::PseudoDecrement:
case CSSSelector::PseudoIncrement:
case CSSSelector::PseudoStart:
case CSSSelector::PseudoEnd:
case CSSSelector::PseudoDoubleButton:
case CSSSelector::PseudoSingleButton:
case CSSSelector::PseudoNoButton:
case CSSSelector::PseudoCornerPresent:
return false;
case CSSSelector::PseudoUnknown:
case CSSSelector::PseudoNotParsed:
default:
ASSERT_NOT_REACHED();
break;
}
return false;
}
#if ENABLE(VIDEO_TRACK)
else if (selector->m_match == CSSSelector::PseudoElement && selector->pseudoType() == CSSSelector::PseudoCue) {
SelectorCheckingContext subContext(context);
subContext.isSubSelector = true;
PseudoId ignoreDynamicPseudo = NOPSEUDO;
const CSSSelector* const & selector = context.selector;
for (subContext.selector = selector->selectorList()->first(); subContext.selector; subContext.selector = CSSSelectorList::next(subContext.selector)) {
if (match(subContext, ignoreDynamicPseudo) == SelectorMatches)
return true;
}
return false;
}
#endif
// ### add the rest of the checks...
return true;
}
bool SVGTransformable::parseTransformAttribute(SVGTransformList* list, const AtomicString& transform)
{
const UChar* start = transform.characters();
const UChar* end = start + transform.length();
return parseTransformAttribute(list, start, end);
}
static bool attributeValueMatches(const Attribute* attributeItem, CSSSelector::Match match, const AtomicString& selectorValue, bool caseSensitive)
{
const AtomicString& value = attributeItem->value();
if (value.isNull())
return false;
switch (match) {
case CSSSelector::Exact:
if (caseSensitive ? selectorValue != value : !equalIgnoringCase(selectorValue, value))
return false;
break;
case CSSSelector::List:
{
// Ignore empty selectors or selectors containing spaces
if (selectorValue.contains(' ') || selectorValue.isEmpty())
return false;
unsigned startSearchAt = 0;
while (true) {
size_t foundPos = value.find(selectorValue, startSearchAt, caseSensitive);
if (foundPos == notFound)
return false;
if (!foundPos || value[foundPos - 1] == ' ') {
unsigned endStr = foundPos + selectorValue.length();
if (endStr == value.length() || value[endStr] == ' ')
break; // We found a match.
}
// No match. Keep looking.
startSearchAt = foundPos + 1;
}
break;
}
case CSSSelector::Contain:
if (!value.contains(selectorValue, caseSensitive) || selectorValue.isEmpty())
return false;
break;
case CSSSelector::Begin:
if (!value.startsWith(selectorValue, caseSensitive) || selectorValue.isEmpty())
return false;
break;
case CSSSelector::End:
if (!value.endsWith(selectorValue, caseSensitive) || selectorValue.isEmpty())
return false;
break;
case CSSSelector::Hyphen:
if (value.length() < selectorValue.length())
return false;
if (!value.startsWith(selectorValue, caseSensitive))
return false;
// It they start the same, check for exact match or following '-':
if (value.length() != selectorValue.length() && value[selectorValue.length()] != '-')
return false;
break;
case CSSSelector::PseudoClass:
case CSSSelector::PseudoElement:
default:
break;
}
return true;
}
bool SVGTransformable::parseTransformAttribute(SVGTransformList* list, const AtomicString& transform)
{
double x[] = {0, 0, 0, 0, 0, 0};
int nr = 0, required = 0, optional = 0;
const UChar* currTransform = transform.characters();
const UChar* end = currTransform + transform.length();
bool delimParsed = false;
while (currTransform < end) {
delimParsed = false;
unsigned short type = SVGTransform::SVG_TRANSFORM_UNKNOWN;
skipOptionalSpaces(currTransform, end);
if (currTransform >= end)
return false;
if (*currTransform == 's') {
if (skipString(currTransform, end, skewXDesc, sizeof(skewXDesc) / sizeof(UChar))) {
required = 1;
optional = 0;
type = SVGTransform::SVG_TRANSFORM_SKEWX;
} else if (skipString(currTransform, end, skewYDesc, sizeof(skewYDesc) / sizeof(UChar))) {
required = 1;
optional = 0;
type = SVGTransform::SVG_TRANSFORM_SKEWY;
} else if (skipString(currTransform, end, scaleDesc, sizeof(scaleDesc) / sizeof(UChar))) {
required = 1;
optional = 1;
type = SVGTransform::SVG_TRANSFORM_SCALE;
} else
return false;
} else if (skipString(currTransform, end, translateDesc, sizeof(translateDesc) / sizeof(UChar))) {
required = 1;
optional = 1;
type = SVGTransform::SVG_TRANSFORM_TRANSLATE;
} else if (skipString(currTransform, end, rotateDesc, sizeof(rotateDesc) / sizeof(UChar))) {
required = 1;
optional = 2;
type = SVGTransform::SVG_TRANSFORM_ROTATE;
} else if (skipString(currTransform, end, matrixDesc, sizeof(matrixDesc) / sizeof(UChar))) {
required = 6;
optional = 0;
type = SVGTransform::SVG_TRANSFORM_MATRIX;
} else
return false;
if ((nr = parseTransformParamList(currTransform, end, x, required, optional)) < 0)
return false;
SVGTransform t;
switch (type) {
case SVGTransform::SVG_TRANSFORM_SKEWX:
t.setSkewX(narrowPrecisionToFloat(x[0]));
break;
case SVGTransform::SVG_TRANSFORM_SKEWY:
t.setSkewY(narrowPrecisionToFloat(x[0]));
break;
case SVGTransform::SVG_TRANSFORM_SCALE:
if (nr == 1) // Spec: if only one param given, assume uniform scaling
t.setScale(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[0]));
else
t.setScale(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[1]));
break;
case SVGTransform::SVG_TRANSFORM_TRANSLATE:
if (nr == 1) // Spec: if only one param given, assume 2nd param to be 0
t.setTranslate(narrowPrecisionToFloat(x[0]), 0);
else
t.setTranslate(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[1]));
break;
case SVGTransform::SVG_TRANSFORM_ROTATE:
if (nr == 1)
t.setRotate(narrowPrecisionToFloat(x[0]), 0, 0);
else
t.setRotate(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[1]), narrowPrecisionToFloat(x[2]));
break;
case SVGTransform::SVG_TRANSFORM_MATRIX:
t.setMatrix(AffineTransform(x[0], x[1], x[2], x[3], x[4], x[5]));
break;
}
ExceptionCode ec = 0;
list->appendItem(t, ec);
skipOptionalSpaces(currTransform, end);
if (currTransform < end && *currTransform == ',') {
delimParsed = true;
currTransform++;
}
skipOptionalSpaces(currTransform, end);
}
return !delimParsed;
}
void ValidationMessageClientImpl::showValidationMessage(const Element& anchor, const String& message)
{
if (message.isEmpty()) {
hideValidationMessage(anchor);
return;
}
if (!anchor.renderBox())
return;
if (m_currentAnchor)
hideValidationMessage(*m_currentAnchor);
m_currentAnchor = &anchor;
IntRect anchorInRootView = currentView()->contentsToRootView(anchor.pixelSnappedBoundingBox());
m_lastAnchorRectInScreen = currentView()->hostWindow()->rootViewToScreen(anchorInRootView);
m_lastPageScaleFactor = m_webView.pageScaleFactor();
m_message = message;
WebTextDirection dir = m_currentAnchor->renderer()->style()->direction() == RTL ? WebTextDirectionRightToLeft : WebTextDirectionLeftToRight;
AtomicString title = m_currentAnchor->fastGetAttribute(HTMLNames::titleAttr);
if (m_client)
m_client->showValidationMessage(anchorInRootView, m_message, title, dir);
m_webView.client()->showValidationMessage(anchorInRootView, m_message, title, dir);
const double minimumSecondToShowValidationMessage = 5.0;
const double secondPerCharacter = 0.05;
const double statusCheckInterval = 0.1;
m_finishTime = monotonicallyIncreasingTime() + std::max(minimumSecondToShowValidationMessage, (message.length() + title.length()) * secondPerCharacter);
// FIXME: We should invoke checkAnchorStatus actively when layout, scroll,
// or page scale change happen.
m_timer.startRepeating(statusCheckInterval);
}
static inline bool containsHTMLSpace(const AtomicString& string)
{
if (LIKELY(string.is8Bit()))
return containsHTMLSpaceTemplate<LChar>(string.characters8(), string.length());
return containsHTMLSpaceTemplate<UChar>(string.characters16(), string.length());
}
bool SelectorChecker::checkPseudoClass(const SelectorCheckingContext& context) const
{
ASSERT(context.element);
Element& element = *context.element;
ASSERT(context.selector);
const CSSSelector& selector = *context.selector;
ASSERT(selector.match() == CSSSelector::PseudoClass);
// Normal element pseudo class checking.
switch (selector.pseudoType()) {
case CSSSelector::PseudoFocus:
if (m_mode == ResolvingStyle) {
if (context.elementStyle)
context.elementStyle->setAffectedByFocus();
}
return matchesFocusPseudoClass(element);
case CSSSelector::PseudoHover:
if (m_mode == ResolvingStyle) {
if (context.elementStyle)
context.elementStyle->setAffectedByHover();
}
return element.hovered();
case CSSSelector::PseudoActive:
if (m_mode == ResolvingStyle) {
if (context.elementStyle)
context.elementStyle->setAffectedByActive();
}
return element.active();
case CSSSelector::PseudoLang:
{
AtomicString value = element.computeInheritedLanguage();
const AtomicString& argument = selector.argument();
if (value.isEmpty() || !value.startsWith(argument, false))
break;
if (value.length() != argument.length() && value[argument.length()] != '-')
break;
return true;
}
case CSSSelector::PseudoUnresolved:
return element.isUnresolvedCustomElement();
case CSSSelector::PseudoHost:
{
if (m_mode == SharingRules)
return true;
// :host only matches a shadow host when :host is in a shadow tree of the shadow host.
if (!context.scope)
return false;
const ContainerNode* shadowHost = context.scope->shadowHost();
if (!shadowHost || shadowHost != element)
return false;
ASSERT(element.shadow());
// For empty parameter case, i.e. just :host or :host().
if (!selector.selectorList())
return true;
SelectorCheckingContext subContext(context);
subContext.contextFlags = TreatShadowHostAsNormalScope;
for (subContext.selector = selector.selectorList()->first(); subContext.selector; subContext.selector = CSSSelectorList::next(*subContext.selector)) {
if (match(subContext))
return true;
}
return false;
}
case CSSSelector::PseudoUnknown:
case CSSSelector::PseudoNotParsed:
case CSSSelector::PseudoUserAgentCustomElement:
return false;
}
ASSERT_NOT_REACHED();
return false;
}