#include "config.h"
#include "Element.h"
#include "AXObjectCache.h"
#include "Attr.h"
#include "CSSParser.h"
#include "CSSSelectorList.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "ClassList.h"
#include "ClientRect.h"
#include "ClientRectList.h"
#include "CustomElementRegistry.h"
#include "DOMTokenList.h"
#include "DatasetDOMStringMap.h"
#include "Document.h"
#include "DocumentFragment.h"
#include "DocumentSharedObjectPool.h"
#include "ElementRareData.h"
#include "EventDispatcher.h"
#include "ExceptionCode.h"
#include "FlowThreadController.h"
#include "FocusController.h"
#include "FocusEvent.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "HTMLCollection.h"
#include "HTMLDocument.h"
#include "HTMLElement.h"
#include "HTMLFormControlsCollection.h"
#include "HTMLFrameOwnerElement.h"
#include "HTMLLabelElement.h"
#include "HTMLNameCollection.h"
#include "HTMLNames.h"
#include "HTMLOptionsCollection.h"
#include "HTMLParserIdioms.h"
#include "HTMLTableRowsCollection.h"
#include "InsertionPoint.h"
#include "InspectorInstrumentation.h"
#include "MutationObserverInterestGroup.h"
#include "MutationRecord.h"
#include "NamedNodeMap.h"
#include "NodeList.h"
#include "NodeRenderStyle.h"
#include "NodeRenderingContext.h"
#include "NodeTraversal.h"
#include "Page.h"
#include "PointerLockController.h"
#include "PseudoElement.h"
#include "RenderRegion.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "SelectorQuery.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "StylePropertySet.h"
#include "StyleResolver.h"
#include "Text.h"
#include "TextIterator.h"
#include "VoidCallback.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include "htmlediting.h"
#include <wtf/BitVector.h>
#include <wtf/CurrentTime.h>
#include <wtf/text/CString.h>
#if ENABLE(SVG)
#include "SVGDocumentExtensions.h"
#include "SVGElement.h"
#include "SVGNames.h"
#endif
namespace WebCore {
using namespace HTMLNames;
using namespace XMLNames;
static inline bool shouldIgnoreAttributeCase(const Element* e)
{
return e && e->document()->isHTMLDocument() && e->isHTMLElement();
}
class StyleResolverParentPusher {
public:
StyleResolverParentPusher(Element* parent)
: m_parent(parent)
, m_pushedStyleResolver(0)
{
}
void push()
{
if (m_pushedStyleResolver)
return;
m_pushedStyleResolver = m_parent->document()->ensureStyleResolver();
m_pushedStyleResolver->pushParentElement(m_parent);
}
~StyleResolverParentPusher()
{
if (!m_pushedStyleResolver)
return;
ASSERT(m_pushedStyleResolver == m_parent->document()->ensureStyleResolver());
if (m_pushedStyleResolver != m_parent->document()->ensureStyleResolver())
return;
m_pushedStyleResolver->popParentElement(m_parent);
}
private:
Element* m_parent;
StyleResolver* m_pushedStyleResolver;
};
typedef Vector<RefPtr<Attr> > AttrNodeList;
typedef HashMap<Element*, OwnPtr<AttrNodeList> > AttrNodeListMap;
static AttrNodeListMap& attrNodeListMap()
{
DEFINE_STATIC_LOCAL(AttrNodeListMap, map, ());
return map;
}
static AttrNodeList* attrNodeListForElement(Element* element)
{
if (!element->hasSyntheticAttrChildNodes())
return 0;
ASSERT(attrNodeListMap().contains(element));
return attrNodeListMap().get(element);
}
static AttrNodeList* ensureAttrNodeListForElement(Element* element)
{
if (element->hasSyntheticAttrChildNodes()) {
ASSERT(attrNodeListMap().contains(element));
return attrNodeListMap().get(element);
}
ASSERT(!attrNodeListMap().contains(element));
element->setHasSyntheticAttrChildNodes(true);
AttrNodeListMap::AddResult result = attrNodeListMap().add(element, adoptPtr(new AttrNodeList));
return result.iterator->value.get();
}
static void removeAttrNodeListForElement(Element* element)
{
ASSERT(element->hasSyntheticAttrChildNodes());
ASSERT(attrNodeListMap().contains(element));
attrNodeListMap().remove(element);
element->setHasSyntheticAttrChildNodes(false);
}
static Attr* findAttrNodeInList(AttrNodeList* attrNodeList, const QualifiedName& name)
{
for (unsigned i = 0; i < attrNodeList->size(); ++i) {
if (attrNodeList->at(i)->qualifiedName() == name)
return attrNodeList->at(i).get();
}
return 0;
}
PassRefPtr<Element> Element::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new Element(tagName, document, CreateElement));
}
Element::~Element()
{
#ifndef NDEBUG
if (document() && document()->renderer()) {
ASSERT(!inNamedFlow());
}
#endif
if (hasRareData()) {
ElementRareData* data = elementRareData();
data->setPseudoElement(BEFORE, 0);
data->setPseudoElement(AFTER, 0);
data->clearShadow();
}
if (hasSyntheticAttrChildNodes())
detachAllAttrNodesFromElement();
#if ENABLE(SVG)
if (hasPendingResources()) {
document()->accessSVGExtensions()->removeElementFromPendingResources(this);
ASSERT(!hasPendingResources());
}
#endif
}
inline ElementRareData* Element::elementRareData() const
{
ASSERT(hasRareData());
return static_cast<ElementRareData*>(rareData());
}
inline ElementRareData* Element::ensureElementRareData()
{
return static_cast<ElementRareData*>(ensureRareData());
}
void Element::clearTabIndexExplicitlyIfNeeded()
{
if (hasRareData())
elementRareData()->clearTabIndexExplicitly();
}
void Element::setTabIndexExplicitly(short tabIndex)
{
ensureElementRareData()->setTabIndexExplicitly(tabIndex);
}
bool Element::supportsFocus() const
{
return hasRareData() && elementRareData()->tabIndexSetExplicitly();
}
Element* Element::focusDelegate()
{
return this;
}
short Element::tabIndex() const
{
return hasRareData() ? elementRareData()->tabIndex() : 0;
}
bool Element::isKeyboardFocusable(KeyboardEvent*) const
{
return isFocusable() && tabIndex() >= 0;
}
bool Element::isMouseFocusable() const
{
return isFocusable();
}
bool Element::shouldUseInputMethod()
{
return isContentEditable(UserSelectAllIsAlwaysNonEditable);
}
void Element::dispatchSimulatedClick(Event* underlyingEvent, SimulatedClickMouseEventOptions eventOptions, SimulatedClickVisualOptions visualOptions)
{
EventDispatcher::dispatchSimulatedClick(this, underlyingEvent, eventOptions, visualOptions);
}
DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, blur);
DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, error);
DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, focus);
DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, load);
PassRefPtr<Node> Element::cloneNode(bool deep)
{
return deep ? cloneElementWithChildren() : cloneElementWithoutChildren();
}
PassRefPtr<Element> Element::cloneElementWithChildren()
{
RefPtr<Element> clone = cloneElementWithoutChildren();
cloneChildNodes(clone.get());
return clone.release();
}
PassRefPtr<Element> Element::cloneElementWithoutChildren()
{
RefPtr<Element> clone = cloneElementWithoutAttributesAndChildren();
ASSERT(isHTMLElement() == clone->isHTMLElement());
clone->cloneDataFromElement(*this);
return clone.release();
}
PassRefPtr<Element> Element::cloneElementWithoutAttributesAndChildren()
{
return document()->createElement(tagQName(), false);
}
PassRefPtr<Attr> Element::detachAttribute(unsigned index)
{
ASSERT(elementData());
const Attribute* attribute = elementData()->attributeItem(index);
ASSERT(attribute);
RefPtr<Attr> attrNode = attrIfExists(attribute->name());
if (attrNode)
detachAttrNodeFromElementWithValue(attrNode.get(), attribute->value());
else
attrNode = Attr::create(document(), attribute->name(), attribute->value());
removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute);
return attrNode.release();
}
void Element::removeAttribute(const QualifiedName& name)
{
if (!elementData())
return;
unsigned index = elementData()->getAttributeItemIndex(name);
if (index == ElementData::attributeNotFound)
return;
removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute);
}
void Element::setBooleanAttribute(const QualifiedName& name, bool value)
{
if (value)
setAttribute(name, emptyAtom);
else
removeAttribute(name);
}
NamedNodeMap* Element::attributes() const
{
ElementRareData* rareData = const_cast<Element*>(this)->ensureElementRareData();
if (NamedNodeMap* attributeMap = rareData->attributeMap())
return attributeMap;
rareData->setAttributeMap(NamedNodeMap::create(const_cast<Element*>(this)));
return rareData->attributeMap();
}
Node::NodeType Element::nodeType() const
{
return ELEMENT_NODE;
}
bool Element::hasAttribute(const QualifiedName& name) const
{
return hasAttributeNS(name.namespaceURI(), name.localName());
}
void Element::synchronizeAllAttributes() const
{
if (!elementData())
return;
if (elementData()->m_styleAttributeIsDirty) {
ASSERT(isStyledElement());
static_cast<const StyledElement*>(this)->synchronizeStyleAttributeInternal();
}
#if ENABLE(SVG)
if (elementData()->m_animatedSVGAttributesAreDirty) {
ASSERT(isSVGElement());
toSVGElement(this)->synchronizeAnimatedSVGAttribute(anyQName());
}
#endif
}
inline void Element::synchronizeAttribute(const QualifiedName& name) const
{
if (!elementData())
return;
if (UNLIKELY(name == styleAttr && elementData()->m_styleAttributeIsDirty)) {
ASSERT(isStyledElement());
static_cast<const StyledElement*>(this)->synchronizeStyleAttributeInternal();
return;
}
#if ENABLE(SVG)
if (UNLIKELY(elementData()->m_animatedSVGAttributesAreDirty)) {
ASSERT(isSVGElement());
toSVGElement(this)->synchronizeAnimatedSVGAttribute(name);
}
#endif
}
inline void Element::synchronizeAttribute(const AtomicString& localName) const
{
if (!elementData())
return;
if (elementData()->m_styleAttributeIsDirty && equalPossiblyIgnoringCase(localName, styleAttr.localName(), shouldIgnoreAttributeCase(this))) {
ASSERT(isStyledElement());
static_cast<const StyledElement*>(this)->synchronizeStyleAttributeInternal();
return;
}
#if ENABLE(SVG)
if (elementData()->m_animatedSVGAttributesAreDirty) {
ASSERT(isSVGElement());
static_cast<const SVGElement*>(this)->synchronizeAnimatedSVGAttribute(QualifiedName(nullAtom, localName, nullAtom));
}
#endif
}
const AtomicString& Element::getAttribute(const QualifiedName& name) const
{
if (!elementData())
return nullAtom;
synchronizeAttribute(name);
if (const Attribute* attribute = getAttributeItem(name))
return attribute->value();
return nullAtom;
}
bool Element::isFocusable() const
{
if (!inDocument() || !supportsFocus())
return false;
if (isInCanvasSubtree()) {
const Element* e = this;
while (e && !e->hasLocalName(canvasTag))
e = e->parentElement();
ASSERT(e);
return e->renderer() && e->renderer()->style()->visibility() == VISIBLE;
}
if (renderer())
ASSERT(!renderer()->needsLayout());
else {
ASSERT(!document()->childNeedsStyleRecalc());
}
if (!renderer() || renderer()->style()->visibility() != VISIBLE)
return false;
return true;
}
bool Element::isUserActionElementInActiveChain() const
{
ASSERT(isUserActionElement());
return document()->userActionElements().isInActiveChain(this);
}
bool Element::isUserActionElementActive() const
{
ASSERT(isUserActionElement());
return document()->userActionElements().isActive(this);
}
bool Element::isUserActionElementFocused() const
{
ASSERT(isUserActionElement());
return document()->userActionElements().isFocused(this);
}
bool Element::isUserActionElementHovered() const
{
ASSERT(isUserActionElement());
return document()->userActionElements().isHovered(this);
}
void Element::setActive(bool flag, bool pause)
{
if (flag == active())
return;
if (Document* document = this->document())
document->userActionElements().setActive(this, flag);
if (!renderer())
return;
bool reactsToPress = renderStyle()->affectedByActive() || childrenAffectedByActive();
if (reactsToPress)
setNeedsStyleRecalc();
if (renderer()->style()->hasAppearance() && renderer()->theme()->stateChanged(renderer(), PressedState))
reactsToPress = true;
if (!document()->page()->chrome().client()->supportsImmediateInvalidation())
return;
if (reactsToPress && pause) {
#ifdef HAVE_FUNC_USLEEP
double startTime = currentTime();
#endif
Document::updateStyleForAllDocuments();
if (renderer())
renderer()->repaint(true);
#ifdef HAVE_FUNC_USLEEP
double remainingTime = 0.1 - (currentTime() - startTime);
if (remainingTime > 0)
usleep(static_cast<useconds_t>(remainingTime * 1000000.0));
#endif
}
}
void Element::setFocus(bool flag)
{
if (flag == focused())
return;
if (Document* document = this->document())
document->userActionElements().setFocused(this, flag);
setNeedsStyleRecalc();
}
void Element::setHovered(bool flag)
{
if (flag == hovered())
return;
if (Document* document = this->document())
document->userActionElements().setHovered(this, flag);
if (!renderer()) {
if (!flag)
setNeedsStyleRecalc();
return;
}
if (renderer()->style()->affectedByHover() || childrenAffectedByHover())
setNeedsStyleRecalc();
if (renderer()->style()->hasAppearance())
renderer()->theme()->stateChanged(renderer(), HoverState);
}
void Element::scrollIntoView(bool alignToTop)
{
document()->updateLayoutIgnorePendingStylesheets();
if (!renderer())
return;
LayoutRect bounds = boundingBox();
if (alignToTop)
renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignTopAlways);
else
renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignBottomAlways);
}
void Element::scrollIntoViewIfNeeded(bool centerIfNeeded)
{
document()->updateLayoutIgnorePendingStylesheets();
if (!renderer())
return;
LayoutRect bounds = boundingBox();
if (centerIfNeeded)
renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignCenterIfNeeded, ScrollAlignment::alignCenterIfNeeded);
else
renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignToEdgeIfNeeded);
}
void Element::scrollByUnits(int units, ScrollGranularity granularity)
{
document()->updateLayoutIgnorePendingStylesheets();
if (!renderer())
return;
if (!renderer()->hasOverflowClip())
return;
ScrollDirection direction = ScrollDown;
if (units < 0) {
direction = ScrollUp;
units = -units;
}
Node* stopNode = this;
toRenderBox(renderer())->scroll(direction, granularity, units, &stopNode);
}
void Element::scrollByLines(int lines)
{
scrollByUnits(lines, ScrollByLine);
}
void Element::scrollByPages(int pages)
{
scrollByUnits(pages, ScrollByPage);
}
static float localZoomForRenderer(RenderObject* renderer)
{
float zoomFactor = 1;
if (renderer->style()->effectiveZoom() != 1) {
RenderObject* prev = renderer;
for (RenderObject* curr = prev->parent(); curr; curr = curr->parent()) {
if (curr->style()->effectiveZoom() != prev->style()->effectiveZoom()) {
zoomFactor = prev->style()->zoom();
break;
}
prev = curr;
}
if (prev->isRenderView())
zoomFactor = prev->style()->zoom();
}
return zoomFactor;
}
static int adjustForLocalZoom(LayoutUnit value, RenderObject* renderer)
{
float zoomFactor = localZoomForRenderer(renderer);
if (zoomFactor == 1)
return value;
#if ENABLE(SUBPIXEL_LAYOUT)
return lroundf(value / zoomFactor);
#else
if (zoomFactor > 1)
value++;
return static_cast<int>(value / zoomFactor);
#endif
}
int Element::offsetLeft()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBoxModelObject* renderer = renderBoxModelObject())
return adjustForLocalZoom(renderer->pixelSnappedOffsetLeft(), renderer);
return 0;
}
int Element::offsetTop()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBoxModelObject* renderer = renderBoxModelObject())
return adjustForLocalZoom(renderer->pixelSnappedOffsetTop(), renderer);
return 0;
}
int Element::offsetWidth()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBoxModelObject* renderer = renderBoxModelObject())
#if ENABLE(SUBPIXEL_LAYOUT)
return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedOffsetWidth(), renderer).round();
#else
return adjustForAbsoluteZoom(renderer->pixelSnappedOffsetWidth(), renderer);
#endif
return 0;
}
int Element::offsetHeight()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBoxModelObject* renderer = renderBoxModelObject())
#if ENABLE(SUBPIXEL_LAYOUT)
return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedOffsetHeight(), renderer).round();
#else
return adjustForAbsoluteZoom(renderer->pixelSnappedOffsetHeight(), renderer);
#endif
return 0;
}
Element* Element::bindingsOffsetParent()
{
Element* element = offsetParent();
if (!element || !element->isInShadowTree())
return element;
return element->containingShadowRoot()->type() == ShadowRoot::UserAgentShadowRoot ? 0 : element;
}
Element* Element::offsetParent()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderObject* renderer = this->renderer()) {
if (RenderObject* offsetParent = renderer->offsetParent())
return toElement(offsetParent->node());
}
return 0;
}
int Element::clientLeft()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* renderer = renderBox())
return adjustForAbsoluteZoom(roundToInt(renderer->clientLeft()), renderer);
return 0;
}
int Element::clientTop()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* renderer = renderBox())
return adjustForAbsoluteZoom(roundToInt(renderer->clientTop()), renderer);
return 0;
}
int Element::clientWidth()
{
document()->updateLayoutIgnorePendingStylesheets();
bool inQuirksMode = document()->inQuirksMode();
if ((!inQuirksMode && document()->documentElement() == this) ||
(inQuirksMode && isHTMLElement() && document()->body() == this)) {
if (FrameView* view = document()->view()) {
if (RenderView* renderView = document()->renderView())
return adjustForAbsoluteZoom(view->layoutWidth(), renderView);
}
}
if (RenderBox* renderer = renderBox())
#if ENABLE(SUBPIXEL_LAYOUT)
return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedClientWidth(), renderer).round();
#else
return adjustForAbsoluteZoom(renderer->pixelSnappedClientWidth(), renderer);
#endif
return 0;
}
int Element::clientHeight()
{
document()->updateLayoutIgnorePendingStylesheets();
bool inQuirksMode = document()->inQuirksMode();
if ((!inQuirksMode && document()->documentElement() == this) ||
(inQuirksMode && isHTMLElement() && document()->body() == this)) {
if (FrameView* view = document()->view()) {
if (RenderView* renderView = document()->renderView())
return adjustForAbsoluteZoom(view->layoutHeight(), renderView);
}
}
if (RenderBox* renderer = renderBox())
#if ENABLE(SUBPIXEL_LAYOUT)
return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedClientHeight(), renderer).round();
#else
return adjustForAbsoluteZoom(renderer->pixelSnappedClientHeight(), renderer);
#endif
return 0;
}
int Element::scrollLeft()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* rend = renderBox())
return adjustForAbsoluteZoom(rend->scrollLeft(), rend);
return 0;
}
int Element::scrollTop()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* rend = renderBox())
return adjustForAbsoluteZoom(rend->scrollTop(), rend);
return 0;
}
void Element::setScrollLeft(int newLeft)
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* rend = renderBox())
rend->setScrollLeft(static_cast<int>(newLeft * rend->style()->effectiveZoom()));
}
void Element::setScrollTop(int newTop)
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* rend = renderBox())
rend->setScrollTop(static_cast<int>(newTop * rend->style()->effectiveZoom()));
}
int Element::scrollWidth()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* rend = renderBox())
return adjustForAbsoluteZoom(rend->scrollWidth(), rend);
return 0;
}
int Element::scrollHeight()
{
document()->updateLayoutIgnorePendingStylesheets();
if (RenderBox* rend = renderBox())
return adjustForAbsoluteZoom(rend->scrollHeight(), rend);
return 0;
}
IntRect Element::boundsInRootViewSpace()
{
document()->updateLayoutIgnorePendingStylesheets();
FrameView* view = document()->view();
if (!view)
return IntRect();
Vector<FloatQuad> quads;
#if ENABLE(SVG)
if (isSVGElement() && renderer()) {
SVGElement* svgElement = toSVGElement(this);
FloatRect localRect;
if (svgElement->getBoundingBox(localRect))
quads.append(renderer()->localToAbsoluteQuad(localRect));
} else
#endif
{
if (renderBoxModelObject())
renderBoxModelObject()->absoluteQuads(quads);
}
if (quads.isEmpty())
return IntRect();
IntRect result = quads[0].enclosingBoundingBox();
for (size_t i = 1; i < quads.size(); ++i)
result.unite(quads[i].enclosingBoundingBox());
result = view->contentsToRootView(result);
return result;
}
PassRefPtr<ClientRectList> Element::getClientRects()
{
document()->updateLayoutIgnorePendingStylesheets();
RenderBoxModelObject* renderBoxModelObject = this->renderBoxModelObject();
if (!renderBoxModelObject)
return ClientRectList::create();
Vector<FloatQuad> quads;
renderBoxModelObject->absoluteQuads(quads);
document()->adjustFloatQuadsForScrollAndAbsoluteZoomAndFrameScale(quads, renderBoxModelObject);
return ClientRectList::create(quads);
}
PassRefPtr<ClientRect> Element::getBoundingClientRect()
{
document()->updateLayoutIgnorePendingStylesheets();
Vector<FloatQuad> quads;
#if ENABLE(SVG)
if (isSVGElement() && renderer() && !renderer()->isSVGRoot()) {
SVGElement* svgElement = toSVGElement(this);
FloatRect localRect;
if (svgElement->getBoundingBox(localRect))
quads.append(renderer()->localToAbsoluteQuad(localRect));
} else
#endif
{
if (renderBoxModelObject())
renderBoxModelObject()->absoluteQuads(quads);
}
if (quads.isEmpty())
return ClientRect::create();
FloatRect result = quads[0].boundingBox();
for (size_t i = 1; i < quads.size(); ++i)
result.unite(quads[i].boundingBox());
document()->adjustFloatRectForScrollAndAbsoluteZoomAndFrameScale(result, renderer());
return ClientRect::create(result);
}
IntRect Element::screenRect() const
{
if (!renderer())
return IntRect();
return document()->view()->contentsToScreen(renderer()->absoluteBoundingBoxRectIgnoringTransforms());
}
const AtomicString& Element::getAttribute(const AtomicString& localName) const
{
if (!elementData())
return nullAtom;
synchronizeAttribute(localName);
if (const Attribute* attribute = elementData()->getAttributeItem(localName, shouldIgnoreAttributeCase(this)))
return attribute->value();
return nullAtom;
}
const AtomicString& Element::getAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) const
{
return getAttribute(QualifiedName(nullAtom, localName, namespaceURI));
}
void Element::setAttribute(const AtomicString& localName, const AtomicString& value, ExceptionCode& ec)
{
if (!Document::isValidName(localName)) {
ec = INVALID_CHARACTER_ERR;
return;
}
synchronizeAttribute(localName);
const AtomicString& caseAdjustedLocalName = shouldIgnoreAttributeCase(this) ? localName.lower() : localName;
unsigned index = elementData() ? elementData()->getAttributeItemIndex(caseAdjustedLocalName, false) : ElementData::attributeNotFound;
const QualifiedName& qName = index != ElementData::attributeNotFound ? attributeItem(index)->name() : QualifiedName(nullAtom, caseAdjustedLocalName, nullAtom);
setAttributeInternal(index, qName, value, NotInSynchronizationOfLazyAttribute);
}
void Element::setAttribute(const QualifiedName& name, const AtomicString& value)
{
synchronizeAttribute(name);
unsigned index = elementData() ? elementData()->getAttributeItemIndex(name) : ElementData::attributeNotFound;
setAttributeInternal(index, name, value, NotInSynchronizationOfLazyAttribute);
}
void Element::setSynchronizedLazyAttribute(const QualifiedName& name, const AtomicString& value)
{
unsigned index = elementData() ? elementData()->getAttributeItemIndex(name) : ElementData::attributeNotFound;
setAttributeInternal(index, name, value, InSynchronizationOfLazyAttribute);
}
inline void Element::setAttributeInternal(unsigned index, const QualifiedName& name, const AtomicString& newValue, SynchronizationOfLazyAttribute inSynchronizationOfLazyAttribute)
{
if (newValue.isNull()) {
if (index != ElementData::attributeNotFound)
removeAttributeInternal(index, inSynchronizationOfLazyAttribute);
return;
}
if (index == ElementData::attributeNotFound) {
addAttributeInternal(name, newValue, inSynchronizationOfLazyAttribute);
return;
}
if (!inSynchronizationOfLazyAttribute)
willModifyAttribute(name, attributeItem(index)->value(), newValue);
if (newValue != attributeItem(index)->value()) {
if (RefPtr<Attr> attrNode = inSynchronizationOfLazyAttribute ? 0 : attrIfExists(name))
attrNode->setValue(newValue);
else
ensureUniqueElementData()->attributeItem(index)->setValue(newValue);
}
if (!inSynchronizationOfLazyAttribute)
didModifyAttribute(name, newValue);
}
static inline AtomicString makeIdForStyleResolution(const AtomicString& value, bool inQuirksMode)
{
if (inQuirksMode)
return value.lower();
return value;
}
static bool checkNeedsStyleInvalidationForIdChange(const AtomicString& oldId, const AtomicString& newId, StyleResolver* styleResolver)
{
ASSERT(newId != oldId);
if (!oldId.isEmpty() && styleResolver->hasSelectorForId(oldId))
return true;
if (!newId.isEmpty() && styleResolver->hasSelectorForId(newId))
return true;
return false;
}
void Element::attributeChanged(const QualifiedName& name, const AtomicString& newValue, AttributeModificationReason)
{
parseAttribute(name, newValue);
document()->incDOMTreeVersion();
StyleResolver* styleResolver = document()->styleResolverIfExists();
bool testShouldInvalidateStyle = attached() && styleResolver && styleChangeType() < FullStyleChange;
bool shouldInvalidateStyle = false;
if (isIdAttributeName(name)) {
AtomicString oldId = elementData()->idForStyleResolution();
AtomicString newId = makeIdForStyleResolution(newValue, document()->inQuirksMode());
if (newId != oldId) {
elementData()->setIdForStyleResolution(newId);
shouldInvalidateStyle = testShouldInvalidateStyle && checkNeedsStyleInvalidationForIdChange(oldId, newId, styleResolver);
}
} else if (name == classAttr)
classAttributeChanged(newValue);
else if (name == HTMLNames::nameAttr)
elementData()->m_hasNameAttribute = !newValue.isNull();
else if (name == HTMLNames::pseudoAttr)
shouldInvalidateStyle |= testShouldInvalidateStyle && isInShadowTree();
invalidateNodeListCachesInAncestors(&name, this);
shouldInvalidateStyle |= !styleResolver;
if (shouldInvalidateStyle)
setNeedsStyleRecalc();
if (AXObjectCache* cache = document()->existingAXObjectCache())
cache->handleAttributeChanged(name, this);
}
inline void Element::attributeChangedFromParserOrByCloning(const QualifiedName& name, const AtomicString& newValue, AttributeModificationReason reason)
{
#if ENABLE(CUSTOM_ELEMENTS)
if (name == isAttr) {
if (CustomElementRegistry* registry = document()->registry())
registry->didGiveTypeExtension(this);
}
#endif
attributeChanged(name, newValue, reason);
}
template <typename CharacterType>
static inline bool classStringHasClassName(const CharacterType* characters, unsigned length)
{
ASSERT(length > 0);
unsigned i = 0;
do {
if (isNotHTMLSpace(characters[i]))
break;
++i;
} while (i < length);
return i < length;
}
static inline bool classStringHasClassName(const AtomicString& newClassString)
{
unsigned length = newClassString.length();
if (!length)
return false;
if (newClassString.is8Bit())
return classStringHasClassName(newClassString.characters8(), length);
return classStringHasClassName(newClassString.characters16(), length);
}
template<typename Checker>
static bool checkSelectorForClassChange(const SpaceSplitString& changedClasses, const Checker& checker)
{
unsigned changedSize = changedClasses.size();
for (unsigned i = 0; i < changedSize; ++i) {
if (checker.hasSelectorForClass(changedClasses[i]))
return true;
}
return false;
}
template<typename Checker>
static bool checkSelectorForClassChange(const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses, const Checker& checker)
{
unsigned oldSize = oldClasses.size();
if (!oldSize)
return checkSelectorForClassChange(newClasses, checker);
BitVector remainingClassBits;
remainingClassBits.ensureSize(oldSize);
unsigned newSize = newClasses.size();
for (unsigned i = 0; i < newSize; ++i) {
for (unsigned j = 0; j < oldSize; ++j) {
if (newClasses[i] == oldClasses[j]) {
remainingClassBits.quickSet(j);
continue;
}
}
if (checker.hasSelectorForClass(newClasses[i]))
return true;
}
for (unsigned i = 0; i < oldSize; ++i) {
if (remainingClassBits.quickGet(i))
continue;
if (checker.hasSelectorForClass(oldClasses[i]))
return true;
}
return false;
}
void Element::classAttributeChanged(const AtomicString& newClassString)
{
StyleResolver* styleResolver = document()->styleResolverIfExists();
bool testShouldInvalidateStyle = attached() && styleResolver && styleChangeType() < FullStyleChange;
bool shouldInvalidateStyle = false;
if (classStringHasClassName(newClassString)) {
const bool shouldFoldCase = document()->inQuirksMode();
const SpaceSplitString oldClasses = elementData()->classNames();
elementData()->setClass(newClassString, shouldFoldCase);
const SpaceSplitString& newClasses = elementData()->classNames();
shouldInvalidateStyle = testShouldInvalidateStyle && checkSelectorForClassChange(oldClasses, newClasses, *styleResolver);
} else {
const SpaceSplitString& oldClasses = elementData()->classNames();
shouldInvalidateStyle = testShouldInvalidateStyle && checkSelectorForClassChange(oldClasses, *styleResolver);
elementData()->clearClass();
}
if (hasRareData())
elementRareData()->clearClassListValueForQuirksMode();
if (shouldInvalidateStyle)
setNeedsStyleRecalc();
}
static inline bool isEventHandlerAttribute(const Attribute& attribute)
{
return attribute.name().namespaceURI().isNull() && attribute.name().localName().startsWith("on");
}
bool Element::isJavaScriptURLAttribute(const Attribute& attribute) const
{
return isURLAttribute(attribute) && protocolIsJavaScript(stripLeadingAndTrailingHTMLSpaces(attribute.value()));
}
void Element::stripScriptingAttributes(Vector<Attribute>& attributeVector) const
{
size_t destination = 0;
for (size_t source = 0; source < attributeVector.size(); ++source) {
if (isEventHandlerAttribute(attributeVector[source])
|| isJavaScriptURLAttribute(attributeVector[source])
|| isHTMLContentAttribute(attributeVector[source]))
continue;
if (source != destination)
attributeVector[destination] = attributeVector[source];
++destination;
}
attributeVector.shrink(destination);
}
void Element::parserSetAttributes(const Vector<Attribute>& attributeVector)
{
ASSERT(!inDocument());
ASSERT(!parentNode());
ASSERT(!m_elementData);
if (attributeVector.isEmpty())
return;
if (document() && document()->sharedObjectPool())
m_elementData = document()->sharedObjectPool()->cachedShareableElementDataWithAttributes(attributeVector);
else
m_elementData = ShareableElementData::createWithAttributes(attributeVector);
for (unsigned i = 0; i < attributeVector.size(); ++i)
attributeChangedFromParserOrByCloning(attributeVector[i].name(), attributeVector[i].value(), ModifiedDirectly);
}
bool Element::hasAttributes() const
{
synchronizeAllAttributes();
return elementData() && elementData()->length();
}
bool Element::hasEquivalentAttributes(const Element* other) const
{
synchronizeAllAttributes();
other->synchronizeAllAttributes();
if (elementData() == other->elementData())
return true;
if (elementData())
return elementData()->isEquivalent(other->elementData());
if (other->elementData())
return other->elementData()->isEquivalent(elementData());
return true;
}
String Element::nodeName() const
{
return m_tagName.toString();
}
String Element::nodeNamePreservingCase() const
{
return m_tagName.toString();
}
void Element::setPrefix(const AtomicString& prefix, ExceptionCode& ec)
{
ec = 0;
checkSetPrefix(prefix, ec);
if (ec)
return;
m_tagName.setPrefix(prefix.isEmpty() ? AtomicString() : prefix);
}
KURL Element::baseURI() const
{
const AtomicString& baseAttribute = getAttribute(baseAttr);
KURL base(KURL(), baseAttribute);
if (!base.protocol().isEmpty())
return base;
ContainerNode* parent = parentNode();
if (!parent)
return base;
const KURL& parentBase = parent->baseURI();
if (parentBase.isNull())
return base;
return KURL(parentBase, baseAttribute);
}
const AtomicString& Element::imageSourceURL() const
{
return getAttribute(srcAttr);
}
bool Element::rendererIsNeeded(const NodeRenderingContext& context)
{
return context.style()->display() != NONE;
}
RenderObject* Element::createRenderer(RenderArena*, RenderStyle* style)
{
return RenderObject::createObject(this, style);
}
bool Element::isDisabledFormControl() const
{
#if ENABLE(DIALOG_ELEMENT)
if (isInert())
return true;
#endif
return false;
}
#if ENABLE(DIALOG_ELEMENT)
bool Element::isInert() const
{
Element* dialog = document()->activeModalDialog();
return dialog && !containsIncludingShadowDOM(dialog) && !dialog->containsIncludingShadowDOM(this);
}
#endif
Node::InsertionNotificationRequest Element::insertedInto(ContainerNode* insertionPoint)
{
bool wasInDocument = inDocument();
ContainerNode::insertedInto(insertionPoint);
ASSERT(!wasInDocument || inDocument());
#if ENABLE(FULLSCREEN_API)
if (containsFullScreenElement() && parentElement() && !parentElement()->containsFullScreenElement())
setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true);
#endif
if (Element* before = pseudoElement(BEFORE))
before->insertedInto(insertionPoint);
if (Element* after = pseudoElement(AFTER))
after->insertedInto(insertionPoint);
if (!insertionPoint->isInTreeScope())
return InsertionDone;
if (hasRareData())
elementRareData()->clearClassListValueForQuirksMode();
TreeScope* newScope = insertionPoint->treeScope();
HTMLDocument* newDocument = !wasInDocument && inDocument() && newScope->documentScope()->isHTMLDocument() ? toHTMLDocument(newScope->documentScope()) : 0;
if (newScope != treeScope())
newScope = 0;
const AtomicString& idValue = getIdAttribute();
if (!idValue.isNull()) {
if (newScope)
updateIdForTreeScope(newScope, nullAtom, idValue);
if (newDocument)
updateIdForDocument(newDocument, nullAtom, idValue, AlwaysUpdateHTMLDocumentNamedItemMaps);
}
const AtomicString& nameValue = getNameAttribute();
if (!nameValue.isNull()) {
if (newScope)
updateNameForTreeScope(newScope, nullAtom, nameValue);
if (newDocument)
updateNameForDocument(newDocument, nullAtom, nameValue);
}
if (newScope && hasTagName(labelTag)) {
if (newScope->shouldCacheLabelsByForAttribute())
updateLabel(newScope, nullAtom, fastGetAttribute(forAttr));
}
return InsertionDone;
}
void Element::removedFrom(ContainerNode* insertionPoint)
{
#if ENABLE(SVG)
bool wasInDocument = insertionPoint->document();
#endif
if (Element* before = pseudoElement(BEFORE))
before->removedFrom(insertionPoint);
if (Element* after = pseudoElement(AFTER))
after->removedFrom(insertionPoint);
#if ENABLE(DIALOG_ELEMENT)
document()->removeFromTopLayer(this);
#endif
#if ENABLE(FULLSCREEN_API)
if (containsFullScreenElement())
setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(false);
#endif
#if ENABLE(POINTER_LOCK)
if (document()->page())
document()->page()->pointerLockController()->elementRemoved(this);
#endif
setSavedLayerScrollOffset(IntSize());
if (insertionPoint->isInTreeScope()) {
TreeScope* oldScope = insertionPoint->treeScope();
HTMLDocument* oldDocument = inDocument() && oldScope->documentScope()->isHTMLDocument() ? toHTMLDocument(oldScope->documentScope()) : 0;
if (oldScope != treeScope())
oldScope = 0;
const AtomicString& idValue = getIdAttribute();
if (!idValue.isNull()) {
if (oldScope)
updateIdForTreeScope(oldScope, idValue, nullAtom);
if (oldDocument)
updateIdForDocument(oldDocument, idValue, nullAtom, AlwaysUpdateHTMLDocumentNamedItemMaps);
}
const AtomicString& nameValue = getNameAttribute();
if (!nameValue.isNull()) {
if (oldScope)
updateNameForTreeScope(oldScope, nameValue, nullAtom);
if (oldDocument)
updateNameForDocument(oldDocument, nameValue, nullAtom);
}
if (oldScope && hasTagName(labelTag)) {
if (oldScope->shouldCacheLabelsByForAttribute())
updateLabel(oldScope, fastGetAttribute(forAttr), nullAtom);
}
}
ContainerNode::removedFrom(insertionPoint);
#if ENABLE(SVG)
if (wasInDocument && hasPendingResources())
document()->accessSVGExtensions()->removeElementFromPendingResources(this);
#endif
}
void Element::createRendererIfNeeded(const AttachContext& context)
{
NodeRenderingContext(this, context).createRendererForElementIfNeeded();
}
void Element::attach(const AttachContext& context)
{
PostAttachCallbackDisabler callbackDisabler(this);
StyleResolverParentPusher parentPusher(this);
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
createRendererIfNeeded(context);
if (parentElement() && parentElement()->isInCanvasSubtree())
setIsInCanvasSubtree(true);
updatePseudoElement(BEFORE);
if (ElementShadow* shadow = this->shadow()) {
parentPusher.push();
shadow->attach();
} else if (firstChild())
parentPusher.push();
ContainerNode::attach(context);
updatePseudoElement(AFTER);
if (hasRareData()) {
ElementRareData* data = elementRareData();
if (data->needsFocusAppearanceUpdateSoonAfterAttach()) {
if (isFocusable() && document()->focusedElement() == this)
document()->updateFocusAppearanceSoon(false );
data->setNeedsFocusAppearanceUpdateSoonAfterAttach(false);
}
}
}
void Element::unregisterNamedFlowContentNode()
{
if (document()->cssRegionsEnabled() && inNamedFlow() && document()->renderView())
document()->renderView()->flowThreadController()->unregisterNamedFlowContentNode(this);
}
void Element::detach(const AttachContext& context)
{
WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates;
unregisterNamedFlowContentNode();
cancelFocusAppearanceUpdate();
if (hasRareData()) {
ElementRareData* data = elementRareData();
data->setPseudoElement(BEFORE, 0);
data->setPseudoElement(AFTER, 0);
data->setIsInCanvasSubtree(false);
data->resetComputedStyle();
data->resetDynamicRestyleObservations();
data->setIsInsideRegion(false);
}
if (ElementShadow* shadow = this->shadow()) {
detachChildrenIfNeeded();
shadow->detach();
}
if (!context.performingReattach) {
if (isUserActionElement()) {
if (hovered())
document()->hoveredElementDidDetach(this);
if (inActiveChain())
document()->elementInActiveChainDidDetach(this);
document()->userActionElements().didDetach(this);
}
}
ContainerNode::detach(context);
}
bool Element::pseudoStyleCacheIsInvalid(const RenderStyle* currentStyle, RenderStyle* newStyle)
{
ASSERT(currentStyle == renderStyle());
ASSERT(renderer());
if (!currentStyle)
return false;
const PseudoStyleCache* pseudoStyleCache = currentStyle->cachedPseudoStyles();
if (!pseudoStyleCache)
return false;
size_t cacheSize = pseudoStyleCache->size();
for (size_t i = 0; i < cacheSize; ++i) {
RefPtr<RenderStyle> newPseudoStyle;
PseudoId pseudoId = pseudoStyleCache->at(i)->styleType();
if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED)
newPseudoStyle = renderer()->uncachedFirstLineStyle(newStyle);
else
newPseudoStyle = renderer()->getUncachedPseudoStyle(PseudoStyleRequest(pseudoId), newStyle, newStyle);
if (!newPseudoStyle)
return true;
if (*newPseudoStyle != *pseudoStyleCache->at(i)) {
if (pseudoId < FIRST_INTERNAL_PSEUDOID)
newStyle->setHasPseudoStyle(pseudoId);
newStyle->addCachedPseudoStyle(newPseudoStyle);
if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) {
renderer()->setNeedsLayoutAndPrefWidthsRecalc();
}
return true;
}
}
return false;
}
PassRefPtr<RenderStyle> Element::styleForRenderer()
{
if (hasCustomStyleCallbacks()) {
if (RefPtr<RenderStyle> style = customStyleForRenderer())
return style.release();
}
return document()->ensureStyleResolver()->styleForElement(this);
}
void Element::recalcStyle(StyleChange change)
{
if (hasCustomStyleCallbacks()) {
if (!willRecalcStyle(change))
return;
}
RefPtr<RenderStyle> currentStyle(renderStyle());
bool hasParentStyle = parentNodeForRenderingAndStyle() ? static_cast<bool>(parentNodeForRenderingAndStyle()->renderStyle()) : false;
bool hasDirectAdjacentRules = childrenAffectedByDirectAdjacentRules();
bool hasIndirectAdjacentRules = childrenAffectedByForwardPositionalRules();
if ((change > NoChange || needsStyleRecalc())) {
if (hasRareData())
elementRareData()->resetComputedStyle();
}
if (hasParentStyle && (change >= Inherit || needsStyleRecalc())) {
StyleChange localChange = Detach;
RefPtr<RenderStyle> newStyle;
if (currentStyle) {
newStyle = styleForRenderer();
localChange = Node::diff(currentStyle.get(), newStyle.get(), document());
}
if (localChange == Detach) {
AttachContext reattachContext;
reattachContext.resolvedStyle = newStyle.get();
reattach(reattachContext);
clearNeedsStyleRecalc();
clearChildNeedsStyleRecalc();
if (hasCustomStyleCallbacks())
didRecalcStyle(change);
return;
}
if (RenderObject* renderer = this->renderer()) {
if (localChange != NoChange || pseudoStyleCacheIsInvalid(currentStyle.get(), newStyle.get()) || (change == Force && renderer->requiresForcedStyleRecalcPropagation()) || styleChangeType() == SyntheticStyleChange)
renderer->setAnimatableStyle(newStyle.get());
else if (needsStyleRecalc()) {
renderer->setStyleInternal(newStyle.get());
}
}
if (document()->styleSheetCollection()->usesRemUnits() && document()->documentElement() == this && localChange != NoChange && currentStyle && newStyle && currentStyle->fontSize() != newStyle->fontSize()) {
if (StyleResolver* styleResolver = document()->styleResolverIfExists())
styleResolver->invalidateMatchedPropertiesCache();
change = Force;
}
if (change != Force) {
if (styleChangeType() >= FullStyleChange)
change = Force;
else
change = localChange;
}
}
StyleResolverParentPusher parentPusher(this);
if (ElementShadow* shadow = this->shadow()) {
if (change >= Inherit || shadow->childNeedsStyleRecalc() || shadow->needsStyleRecalc()) {
parentPusher.push();
shadow->recalcStyle(change);
}
}
updatePseudoElement(BEFORE, change);
bool forceCheckOfNextElementSibling = false;
bool forceCheckOfAnyElementSibling = false;
for (Node *n = firstChild(); n; n = n->nextSibling()) {
if (n->isTextNode()) {
toText(n)->recalcTextStyle(change);
continue;
}
if (!n->isElementNode())
continue;
Element* element = toElement(n);
bool childRulesChanged = element->needsStyleRecalc() && element->styleChangeType() == FullStyleChange;
if ((forceCheckOfNextElementSibling || forceCheckOfAnyElementSibling))
element->setNeedsStyleRecalc();
if (change >= Inherit || element->childNeedsStyleRecalc() || element->needsStyleRecalc()) {
parentPusher.push();
element->recalcStyle(change);
}
forceCheckOfNextElementSibling = childRulesChanged && hasDirectAdjacentRules;
forceCheckOfAnyElementSibling = forceCheckOfAnyElementSibling || (childRulesChanged && hasIndirectAdjacentRules);
}
updatePseudoElement(AFTER, change);
clearNeedsStyleRecalc();
clearChildNeedsStyleRecalc();
if (hasCustomStyleCallbacks())
didRecalcStyle(change);
}
ElementShadow* Element::shadow() const
{
return hasRareData() ? elementRareData()->shadow() : 0;
}
ElementShadow* Element::ensureShadow()
{
return ensureElementRareData()->ensureShadow();
}
void Element::didAffectSelector(AffectedSelectorMask)
{
setNeedsStyleRecalc();
}
PassRefPtr<ShadowRoot> Element::createShadowRoot(ExceptionCode& ec)
{
if (alwaysCreateUserAgentShadowRoot())
ensureUserAgentShadowRoot();
#if ENABLE(SHADOW_DOM)
if (RuntimeEnabledFeatures::authorShadowDOMForAnyElementEnabled())
return ensureShadow()->addShadowRoot(this, ShadowRoot::AuthorShadowRoot);
#endif
if (!areAuthorShadowsAllowed()) {
ec = HIERARCHY_REQUEST_ERR;
return 0;
}
return ensureShadow()->addShadowRoot(this, ShadowRoot::AuthorShadowRoot);
}
ShadowRoot* Element::authorShadowRoot() const
{
ElementShadow* elementShadow = shadow();
if (!elementShadow)
return 0;
ShadowRoot* shadowRoot = elementShadow->shadowRoot();
if (shadowRoot->type() == ShadowRoot::AuthorShadowRoot)
return shadowRoot;
return 0;
}
ShadowRoot* Element::userAgentShadowRoot() const
{
if (ElementShadow* elementShadow = shadow()) {
if (ShadowRoot* shadowRoot = elementShadow->shadowRoot()) {
ASSERT(shadowRoot->type() == ShadowRoot::UserAgentShadowRoot);
return shadowRoot;
}
}
return 0;
}
ShadowRoot* Element::ensureUserAgentShadowRoot()
{
ShadowRoot* shadowRoot = userAgentShadowRoot();
if (!shadowRoot) {
shadowRoot = ensureShadow()->addShadowRoot(this, ShadowRoot::UserAgentShadowRoot);
didAddUserAgentShadowRoot(shadowRoot);
}
return shadowRoot;
}
const AtomicString& Element::shadowPseudoId() const
{
return pseudo();
}
bool Element::childTypeAllowed(NodeType type) const
{
switch (type) {
case ELEMENT_NODE:
case TEXT_NODE:
case COMMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
case CDATA_SECTION_NODE:
case ENTITY_REFERENCE_NODE:
return true;
default:
break;
}
return false;
}
static void checkForEmptyStyleChange(Element* element, RenderStyle* style)
{
if (!style && !element->styleAffectedByEmpty())
return;
if (!style || (element->styleAffectedByEmpty() && (!style->emptyState() || element->hasChildNodes())))
element->setNeedsStyleRecalc();
}
static void checkForSiblingStyleChanges(Element* e, RenderStyle* style, bool finishedParsingCallback,
Node* beforeChange, Node* afterChange, int childCountDelta)
{
checkForEmptyStyleChange(e, style);
if (!style || (e->needsStyleRecalc() && e->childrenAffectedByPositionalRules()))
return;
if (e->childrenAffectedByFirstChildRules() && afterChange) {
Node* newFirstChild = 0;
for (newFirstChild = e->firstChild(); newFirstChild && !newFirstChild->isElementNode(); newFirstChild = newFirstChild->nextSibling()) {};
Node* firstElementAfterInsertion = 0;
for (firstElementAfterInsertion = afterChange;
firstElementAfterInsertion && !firstElementAfterInsertion->isElementNode();
firstElementAfterInsertion = firstElementAfterInsertion->nextSibling()) {};
if (newFirstChild != firstElementAfterInsertion && firstElementAfterInsertion && firstElementAfterInsertion->attached() &&
firstElementAfterInsertion->renderStyle() && firstElementAfterInsertion->renderStyle()->firstChildState())
firstElementAfterInsertion->setNeedsStyleRecalc();
if (childCountDelta < 0 && newFirstChild == firstElementAfterInsertion && newFirstChild && (!newFirstChild->renderStyle() || !newFirstChild->renderStyle()->firstChildState()))
newFirstChild->setNeedsStyleRecalc();
}
if (e->childrenAffectedByLastChildRules() && beforeChange) {
Node* newLastChild = 0;
for (newLastChild = e->lastChild(); newLastChild && !newLastChild->isElementNode(); newLastChild = newLastChild->previousSibling()) {};
Node* lastElementBeforeInsertion = 0;
for (lastElementBeforeInsertion = beforeChange;
lastElementBeforeInsertion && !lastElementBeforeInsertion->isElementNode();
lastElementBeforeInsertion = lastElementBeforeInsertion->previousSibling()) {};
if (newLastChild != lastElementBeforeInsertion && lastElementBeforeInsertion && lastElementBeforeInsertion->attached() &&
lastElementBeforeInsertion->renderStyle() && lastElementBeforeInsertion->renderStyle()->lastChildState())
lastElementBeforeInsertion->setNeedsStyleRecalc();
if ((childCountDelta < 0 || finishedParsingCallback) && newLastChild == lastElementBeforeInsertion && newLastChild && (!newLastChild->renderStyle() || !newLastChild->renderStyle()->lastChildState()))
newLastChild->setNeedsStyleRecalc();
}
if (e->childrenAffectedByDirectAdjacentRules() && afterChange) {
Node* firstElementAfterInsertion = 0;
for (firstElementAfterInsertion = afterChange;
firstElementAfterInsertion && !firstElementAfterInsertion->isElementNode();
firstElementAfterInsertion = firstElementAfterInsertion->nextSibling()) {};
if (firstElementAfterInsertion && firstElementAfterInsertion->attached())
firstElementAfterInsertion->setNeedsStyleRecalc();
}
if ((e->childrenAffectedByForwardPositionalRules() && afterChange)
|| (e->childrenAffectedByBackwardPositionalRules() && beforeChange))
e->setNeedsStyleRecalc();
}
void Element::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
if (changedByParser)
checkForEmptyStyleChange(this, renderStyle());
else
checkForSiblingStyleChanges(this, renderStyle(), false, beforeChange, afterChange, childCountDelta);
if (ElementShadow * shadow = this->shadow())
shadow->invalidateDistribution();
}
void Element::removeAllEventListeners()
{
ContainerNode::removeAllEventListeners();
if (ElementShadow* shadow = this->shadow())
shadow->removeAllEventListeners();
}
void Element::beginParsingChildren()
{
clearIsParsingChildrenFinished();
StyleResolver* styleResolver = document()->styleResolverIfExists();
if (styleResolver && attached())
styleResolver->pushParentElement(this);
}
void Element::finishParsingChildren()
{
ContainerNode::finishParsingChildren();
setIsParsingChildrenFinished();
checkForSiblingStyleChanges(this, renderStyle(), true, lastChild(), 0, 0);
if (StyleResolver* styleResolver = document()->styleResolverIfExists())
styleResolver->popParentElement(this);
}
#ifndef NDEBUG
void Element::formatForDebugger(char* buffer, unsigned length) const
{
StringBuilder result;
String s;
result.append(nodeName());
s = getIdAttribute();
if (s.length() > 0) {
if (result.length() > 0)
result.appendLiteral("; ");
result.appendLiteral("id=");
result.append(s);
}
s = getAttribute(classAttr);
if (s.length() > 0) {
if (result.length() > 0)
result.appendLiteral("; ");
result.appendLiteral("class=");
result.append(s);
}
strncpy(buffer, result.toString().utf8().data(), length - 1);
}
#endif
const Vector<RefPtr<Attr> >& Element::attrNodeList()
{
ASSERT(hasSyntheticAttrChildNodes());
return *attrNodeListForElement(this);
}
PassRefPtr<Attr> Element::setAttributeNode(Attr* attrNode, ExceptionCode& ec)
{
if (!attrNode) {
ec = TYPE_MISMATCH_ERR;
return 0;
}
RefPtr<Attr> oldAttrNode = attrIfExists(attrNode->qualifiedName());
if (oldAttrNode.get() == attrNode)
return attrNode;
if (attrNode->ownerElement()) {
ec = INUSE_ATTRIBUTE_ERR;
return 0;
}
synchronizeAllAttributes();
UniqueElementData* elementData = ensureUniqueElementData();
unsigned index = elementData->getAttributeItemIndexForAttributeNode(attrNode);
if (index != ElementData::attributeNotFound) {
if (oldAttrNode)
detachAttrNodeFromElementWithValue(oldAttrNode.get(), elementData->attributeItem(index)->value());
else
oldAttrNode = Attr::create(document(), attrNode->qualifiedName(), elementData->attributeItem(index)->value());
}
setAttributeInternal(index, attrNode->qualifiedName(), attrNode->value(), NotInSynchronizationOfLazyAttribute);
attrNode->attachToElement(this);
treeScope()->adoptIfNeeded(attrNode);
ensureAttrNodeListForElement(this)->append(attrNode);
return oldAttrNode.release();
}
PassRefPtr<Attr> Element::setAttributeNodeNS(Attr* attr, ExceptionCode& ec)
{
return setAttributeNode(attr, ec);
}
PassRefPtr<Attr> Element::removeAttributeNode(Attr* attr, ExceptionCode& ec)
{
if (!attr) {
ec = TYPE_MISMATCH_ERR;
return 0;
}
if (attr->ownerElement() != this) {
ec = NOT_FOUND_ERR;
return 0;
}
ASSERT(document() == attr->document());
synchronizeAttribute(attr->qualifiedName());
unsigned index = elementData()->getAttributeItemIndexForAttributeNode(attr);
if (index == ElementData::attributeNotFound) {
ec = NOT_FOUND_ERR;
return 0;
}
RefPtr<Attr> attrNode = attr;
detachAttrNodeFromElementWithValue(attr, elementData()->attributeItem(index)->value());
removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute);
return attrNode.release();
}
bool Element::parseAttributeName(QualifiedName& out, const AtomicString& namespaceURI, const AtomicString& qualifiedName, ExceptionCode& ec)
{
String prefix, localName;
if (!Document::parseQualifiedName(qualifiedName, prefix, localName, ec))
return false;
ASSERT(!ec);
QualifiedName qName(prefix, localName, namespaceURI);
if (!Document::hasValidNamespaceForAttributes(qName)) {
ec = NAMESPACE_ERR;
return false;
}
out = qName;
return true;
}
void Element::setAttributeNS(const AtomicString& namespaceURI, const AtomicString& qualifiedName, const AtomicString& value, ExceptionCode& ec)
{
QualifiedName parsedName = anyName;
if (!parseAttributeName(parsedName, namespaceURI, qualifiedName, ec))
return;
setAttribute(parsedName, value);
}
void Element::removeAttributeInternal(unsigned index, SynchronizationOfLazyAttribute inSynchronizationOfLazyAttribute)
{
ASSERT_WITH_SECURITY_IMPLICATION(index < attributeCount());
UniqueElementData* elementData = ensureUniqueElementData();
QualifiedName name = elementData->attributeItem(index)->name();
AtomicString valueBeingRemoved = elementData->attributeItem(index)->value();
if (!inSynchronizationOfLazyAttribute) {
if (!valueBeingRemoved.isNull())
willModifyAttribute(name, valueBeingRemoved, nullAtom);
}
if (RefPtr<Attr> attrNode = attrIfExists(name))
detachAttrNodeFromElementWithValue(attrNode.get(), elementData->attributeItem(index)->value());
elementData->removeAttribute(index);
if (!inSynchronizationOfLazyAttribute)
didRemoveAttribute(name);
}
void Element::addAttributeInternal(const QualifiedName& name, const AtomicString& value, SynchronizationOfLazyAttribute inSynchronizationOfLazyAttribute)
{
if (!inSynchronizationOfLazyAttribute)
willModifyAttribute(name, nullAtom, value);
ensureUniqueElementData()->addAttribute(name, value);
if (!inSynchronizationOfLazyAttribute)
didAddAttribute(name, value);
}
void Element::removeAttribute(const AtomicString& name)
{
if (!elementData())
return;
AtomicString localName = shouldIgnoreAttributeCase(this) ? name.lower() : name;
unsigned index = elementData()->getAttributeItemIndex(localName, false);
if (index == ElementData::attributeNotFound) {
if (UNLIKELY(localName == styleAttr) && elementData()->m_styleAttributeIsDirty && isStyledElement())
static_cast<StyledElement*>(this)->removeAllInlineStyleProperties();
return;
}
removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute);
}
void Element::removeAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName)
{
removeAttribute(QualifiedName(nullAtom, localName, namespaceURI));
}
PassRefPtr<Attr> Element::getAttributeNode(const AtomicString& localName)
{
if (!elementData())
return 0;
synchronizeAttribute(localName);
const Attribute* attribute = elementData()->getAttributeItem(localName, shouldIgnoreAttributeCase(this));
if (!attribute)
return 0;
return ensureAttr(attribute->name());
}
PassRefPtr<Attr> Element::getAttributeNodeNS(const AtomicString& namespaceURI, const AtomicString& localName)
{
if (!elementData())
return 0;
QualifiedName qName(nullAtom, localName, namespaceURI);
synchronizeAttribute(qName);
const Attribute* attribute = elementData()->getAttributeItem(qName);
if (!attribute)
return 0;
return ensureAttr(attribute->name());
}
bool Element::hasAttribute(const AtomicString& localName) const
{
if (!elementData())
return false;
synchronizeAttribute(localName);
return elementData()->getAttributeItem(shouldIgnoreAttributeCase(this) ? localName.lower() : localName, false);
}
bool Element::hasAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) const
{
if (!elementData())
return false;
QualifiedName qName(nullAtom, localName, namespaceURI);
synchronizeAttribute(qName);
return elementData()->getAttributeItem(qName);
}
CSSStyleDeclaration *Element::style()
{
return 0;
}
void Element::focus(bool restorePreviousSelection, FocusDirection direction)
{
if (!inDocument())
return;
Document* doc = document();
if (doc->focusedElement() == this)
return;
if (doc->haveStylesheetsLoaded()) {
doc->updateLayoutIgnorePendingStylesheets();
if (!isFocusable())
return;
}
if (!supportsFocus())
return;
RefPtr<Node> protect;
if (Page* page = doc->page()) {
protect = this;
if (!page->focusController()->setFocusedElement(this, doc->frame(), direction))
return;
}
doc->updateLayoutIgnorePendingStylesheets();
if (!isFocusable()) {
ensureElementRareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(true);
return;
}
cancelFocusAppearanceUpdate();
updateFocusAppearance(restorePreviousSelection);
}
void Element::updateFocusAppearance(bool )
{
if (isRootEditableElement()) {
Frame* frame = document()->frame();
if (!frame)
return;
if (this == frame->selection()->rootEditableElement())
return;
VisibleSelection newSelection = VisibleSelection(firstPositionInOrBeforeNode(this), DOWNSTREAM);
if (frame->selection()->shouldChangeSelection(newSelection)) {
frame->selection()->setSelection(newSelection);
frame->selection()->revealSelection();
}
} else if (renderer() && !renderer()->isWidget())
renderer()->scrollRectToVisible(boundingBox());
}
void Element::blur()
{
cancelFocusAppearanceUpdate();
Document* doc = document();
if (treeScope()->focusedElement() == this) {
if (doc->frame())
doc->frame()->page()->focusController()->setFocusedElement(0, doc->frame());
else
doc->setFocusedElement(0);
}
}
void Element::dispatchFocusInEvent(const AtomicString& eventType, PassRefPtr<Element> oldFocusedElement)
{
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
ASSERT(eventType == eventNames().focusinEvent || eventType == eventNames().DOMFocusInEvent);
dispatchScopedEventDispatchMediator(FocusInEventDispatchMediator::create(FocusEvent::create(eventType, true, false, document()->defaultView(), 0, oldFocusedElement)));
}
void Element::dispatchFocusOutEvent(const AtomicString& eventType, PassRefPtr<Element> newFocusedElement)
{
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
ASSERT(eventType == eventNames().focusoutEvent || eventType == eventNames().DOMFocusOutEvent);
dispatchScopedEventDispatchMediator(FocusOutEventDispatchMediator::create(FocusEvent::create(eventType, true, false, document()->defaultView(), 0, newFocusedElement)));
}
void Element::dispatchFocusEvent(PassRefPtr<Element> oldFocusedElement, FocusDirection)
{
if (document()->page())
document()->page()->chrome().client()->elementDidFocus(this);
RefPtr<FocusEvent> event = FocusEvent::create(eventNames().focusEvent, false, false, document()->defaultView(), 0, oldFocusedElement);
EventDispatcher::dispatchEvent(this, FocusEventDispatchMediator::create(event.release()));
}
void Element::dispatchBlurEvent(PassRefPtr<Element> newFocusedElement)
{
if (document()->page())
document()->page()->chrome().client()->elementDidBlur(this);
RefPtr<FocusEvent> event = FocusEvent::create(eventNames().blurEvent, false, false, document()->defaultView(), 0, newFocusedElement);
EventDispatcher::dispatchEvent(this, BlurEventDispatchMediator::create(event.release()));
}
String Element::innerText()
{
document()->updateLayoutIgnorePendingStylesheets();
if (!renderer())
return textContent(true);
return plainText(rangeOfContents(const_cast<Element*>(this)).get());
}
String Element::outerText()
{
return innerText();
}
String Element::title() const
{
return String();
}
const AtomicString& Element::pseudo() const
{
return getAttribute(pseudoAttr);
}
void Element::setPseudo(const AtomicString& value)
{
setAttribute(pseudoAttr, value);
}
LayoutSize Element::minimumSizeForResizing() const
{
return hasRareData() ? elementRareData()->minimumSizeForResizing() : defaultMinimumSizeForResizing();
}
void Element::setMinimumSizeForResizing(const LayoutSize& size)
{
if (!hasRareData() && size == defaultMinimumSizeForResizing())
return;
ensureElementRareData()->setMinimumSizeForResizing(size);
}
RenderStyle* Element::computedStyle(PseudoId pseudoElementSpecifier)
{
if (PseudoElement* element = pseudoElement(pseudoElementSpecifier))
return element->computedStyle();
if (RenderStyle* usedStyle = renderStyle()) {
if (pseudoElementSpecifier) {
RenderStyle* cachedPseudoStyle = usedStyle->getCachedPseudoStyle(pseudoElementSpecifier);
return cachedPseudoStyle ? cachedPseudoStyle : usedStyle;
} else
return usedStyle;
}
if (!attached())
return 0;
ElementRareData* data = ensureElementRareData();
if (!data->computedStyle())
data->setComputedStyle(document()->styleForElementIgnoringPendingStylesheets(this));
return pseudoElementSpecifier ? data->computedStyle()->getCachedPseudoStyle(pseudoElementSpecifier) : data->computedStyle();
}
void Element::setStyleAffectedByEmpty()
{
ensureElementRareData()->setStyleAffectedByEmpty(true);
}
void Element::setChildrenAffectedByHover(bool value)
{
if (value || hasRareData())
ensureElementRareData()->setChildrenAffectedByHover(value);
}
void Element::setChildrenAffectedByActive(bool value)
{
if (value || hasRareData())
ensureElementRareData()->setChildrenAffectedByActive(value);
}
void Element::setChildrenAffectedByDrag(bool value)
{
if (value || hasRareData())
ensureElementRareData()->setChildrenAffectedByDrag(value);
}
void Element::setChildrenAffectedByFirstChildRules()
{
ensureElementRareData()->setChildrenAffectedByFirstChildRules(true);
}
void Element::setChildrenAffectedByLastChildRules()
{
ensureElementRareData()->setChildrenAffectedByLastChildRules(true);
}
void Element::setChildrenAffectedByDirectAdjacentRules()
{
ensureElementRareData()->setChildrenAffectedByDirectAdjacentRules(true);
}
void Element::setChildrenAffectedByForwardPositionalRules()
{
ensureElementRareData()->setChildrenAffectedByForwardPositionalRules(true);
}
void Element::setChildrenAffectedByBackwardPositionalRules()
{
ensureElementRareData()->setChildrenAffectedByBackwardPositionalRules(true);
}
void Element::setChildIndex(unsigned index)
{
ElementRareData* rareData = ensureElementRareData();
if (RenderStyle* style = renderStyle())
style->setUnique();
rareData->setChildIndex(index);
}
bool Element::hasFlagsSetDuringStylingOfChildren() const
{
if (!hasRareData())
return false;
return rareDataChildrenAffectedByHover()
|| rareDataChildrenAffectedByActive()
|| rareDataChildrenAffectedByDrag()
|| rareDataChildrenAffectedByFirstChildRules()
|| rareDataChildrenAffectedByLastChildRules()
|| rareDataChildrenAffectedByDirectAdjacentRules()
|| rareDataChildrenAffectedByForwardPositionalRules()
|| rareDataChildrenAffectedByBackwardPositionalRules();
}
bool Element::rareDataStyleAffectedByEmpty() const
{
ASSERT(hasRareData());
return elementRareData()->styleAffectedByEmpty();
}
bool Element::rareDataChildrenAffectedByHover() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByHover();
}
bool Element::rareDataChildrenAffectedByActive() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByActive();
}
bool Element::rareDataChildrenAffectedByDrag() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByDrag();
}
bool Element::rareDataChildrenAffectedByFirstChildRules() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByFirstChildRules();
}
bool Element::rareDataChildrenAffectedByLastChildRules() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByLastChildRules();
}
bool Element::rareDataChildrenAffectedByDirectAdjacentRules() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByDirectAdjacentRules();
}
bool Element::rareDataChildrenAffectedByForwardPositionalRules() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByForwardPositionalRules();
}
bool Element::rareDataChildrenAffectedByBackwardPositionalRules() const
{
ASSERT(hasRareData());
return elementRareData()->childrenAffectedByBackwardPositionalRules();
}
unsigned Element::rareDataChildIndex() const
{
ASSERT(hasRareData());
return elementRareData()->childIndex();
}
void Element::setIsInCanvasSubtree(bool isInCanvasSubtree)
{
ensureElementRareData()->setIsInCanvasSubtree(isInCanvasSubtree);
}
bool Element::isInCanvasSubtree() const
{
return hasRareData() && elementRareData()->isInCanvasSubtree();
}
void Element::setIsInsideRegion(bool value)
{
if (value == isInsideRegion())
return;
ensureElementRareData()->setIsInsideRegion(value);
}
bool Element::isInsideRegion() const
{
return hasRareData() ? elementRareData()->isInsideRegion() : false;
}
AtomicString Element::computeInheritedLanguage() const
{
const Node* n = this;
AtomicString value;
do {
if (n->isElementNode()) {
if (const ElementData* elementData = toElement(n)->elementData()) {
if (const Attribute* attribute = elementData->getAttributeItem(XMLNames::langAttr))
value = attribute->value();
else if (const Attribute* attribute = elementData->getAttributeItem(HTMLNames::langAttr))
value = attribute->value();
}
} else if (n->isDocumentNode()) {
value = toDocument(n)->contentLanguage();
}
n = n->parentNode();
} while (n && value.isNull());
return value;
}
Locale& Element::locale() const
{
return document()->getCachedLocale(computeInheritedLanguage());
}
void Element::cancelFocusAppearanceUpdate()
{
if (hasRareData())
elementRareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(false);
if (document()->focusedElement() == this)
document()->cancelFocusAppearanceUpdate();
}
void Element::normalizeAttributes()
{
if (!hasAttributes())
return;
for (unsigned i = 0; i < attributeCount(); ++i) {
if (RefPtr<Attr> attr = attrIfExists(attributeItem(i)->name()))
attr->normalize();
}
}
void Element::updatePseudoElement(PseudoId pseudoId, StyleChange change)
{
PseudoElement* existing = pseudoElement(pseudoId);
if (existing) {
existing->recalcStyle(needsStyleRecalc() ? Force : change);
if (!renderer() || !pseudoElementRendererIsNeeded(renderer()->getCachedPseudoStyle(pseudoId)))
setPseudoElement(pseudoId, 0);
} else if (RefPtr<PseudoElement> element = createPseudoElementIfNeeded(pseudoId)) {
element->attach();
setPseudoElement(pseudoId, element.release());
}
}
PassRefPtr<PseudoElement> Element::createPseudoElementIfNeeded(PseudoId pseudoId)
{
if (!document()->styleSheetCollection()->usesBeforeAfterRules())
return 0;
if (!renderer() || !renderer()->canHaveGeneratedChildren())
return 0;
if (isPseudoElement())
return 0;
if (!pseudoElementRendererIsNeeded(renderer()->getCachedPseudoStyle(pseudoId)))
return 0;
return PseudoElement::create(this, pseudoId);
}
bool Element::hasPseudoElements() const
{
return hasRareData() && elementRareData()->hasPseudoElements();
}
PseudoElement* Element::pseudoElement(PseudoId pseudoId) const
{
return hasRareData() ? elementRareData()->pseudoElement(pseudoId) : 0;
}
void Element::setPseudoElement(PseudoId pseudoId, PassRefPtr<PseudoElement> element)
{
ensureElementRareData()->setPseudoElement(pseudoId, element);
resetNeedsShadowTreeWalker();
}
RenderObject* Element::pseudoElementRenderer(PseudoId pseudoId) const
{
if (PseudoElement* element = pseudoElement(pseudoId))
return element->renderer();
return 0;
}
Element* Element::firstElementChild() const
{
return ElementTraversal::firstWithin(this);
}
Element* Element::lastElementChild() const
{
Node* n = lastChild();
while (n && !n->isElementNode())
n = n->previousSibling();
return toElement(n);
}
unsigned Element::childElementCount() const
{
unsigned count = 0;
Node* n = firstChild();
while (n) {
count += n->isElementNode();
n = n->nextSibling();
}
return count;
}
bool Element::matchesReadOnlyPseudoClass() const
{
return false;
}
bool Element::matchesReadWritePseudoClass() const
{
return false;
}
bool Element::webkitMatchesSelector(const String& selector, ExceptionCode& ec)
{
if (selector.isEmpty()) {
ec = SYNTAX_ERR;
return false;
}
SelectorQuery* selectorQuery = document()->selectorQueryCache()->add(selector, document(), ec);
if (!selectorQuery)
return false;
return selectorQuery->matches(this);
}
bool Element::shouldAppearIndeterminate() const
{
return false;
}
DOMTokenList* Element::classList()
{
ElementRareData* data = ensureElementRareData();
if (!data->classList())
data->setClassList(ClassList::create(this));
return data->classList();
}
DOMStringMap* Element::dataset()
{
ElementRareData* data = ensureElementRareData();
if (!data->dataset())
data->setDataset(DatasetDOMStringMap::create(this));
return data->dataset();
}
KURL Element::getURLAttribute(const QualifiedName& name) const
{
#if !ASSERT_DISABLED
if (elementData()) {
if (const Attribute* attribute = getAttributeItem(name))
ASSERT(isURLAttribute(*attribute));
}
#endif
return document()->completeURL(stripLeadingAndTrailingHTMLSpaces(getAttribute(name)));
}
KURL Element::getNonEmptyURLAttribute(const QualifiedName& name) const
{
#if !ASSERT_DISABLED
if (elementData()) {
if (const Attribute* attribute = getAttributeItem(name))
ASSERT(isURLAttribute(*attribute));
}
#endif
String value = stripLeadingAndTrailingHTMLSpaces(getAttribute(name));
if (value.isEmpty())
return KURL();
return document()->completeURL(value);
}
int Element::getIntegralAttribute(const QualifiedName& attributeName) const
{
return getAttribute(attributeName).string().toInt();
}
void Element::setIntegralAttribute(const QualifiedName& attributeName, int value)
{
setAttribute(attributeName, String::number(value));
}
unsigned Element::getUnsignedIntegralAttribute(const QualifiedName& attributeName) const
{
return getAttribute(attributeName).string().toUInt();
}
void Element::setUnsignedIntegralAttribute(const QualifiedName& attributeName, unsigned value)
{
setAttribute(attributeName, String::number(value));
}
#if ENABLE(SVG)
bool Element::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
{
if (childContext.node()->isSVGElement())
return childContext.node()->hasTagName(SVGNames::svgTag) || isSVGElement();
return ContainerNode::childShouldCreateRenderer(childContext);
}
#endif
#if ENABLE(FULLSCREEN_API)
void Element::webkitRequestFullscreen()
{
document()->requestFullScreenForElement(this, ALLOW_KEYBOARD_INPUT, Document::EnforceIFrameAllowFullScreenRequirement);
}
void Element::webkitRequestFullScreen(unsigned short flags)
{
document()->requestFullScreenForElement(this, (flags | LEGACY_MOZILLA_REQUEST), Document::EnforceIFrameAllowFullScreenRequirement);
}
bool Element::containsFullScreenElement() const
{
return hasRareData() && elementRareData()->containsFullScreenElement();
}
void Element::setContainsFullScreenElement(bool flag)
{
ensureElementRareData()->setContainsFullScreenElement(flag);
setNeedsStyleRecalc(SyntheticStyleChange);
}
static Element* parentCrossingFrameBoundaries(Element* element)
{
ASSERT(element);
return element->parentElement() ? element->parentElement() : element->document()->ownerElement();
}
void Element::setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(bool flag)
{
Element* element = this;
while ((element = parentCrossingFrameBoundaries(element)))
element->setContainsFullScreenElement(flag);
}
#endif
#if ENABLE(DIALOG_ELEMENT)
bool Element::isInTopLayer() const
{
return hasRareData() && elementRareData()->isInTopLayer();
}
void Element::setIsInTopLayer(bool inTopLayer)
{
if (isInTopLayer() == inTopLayer)
return;
ensureElementRareData()->setIsInTopLayer(inTopLayer);
reattachIfAttached();
}
#endif
#if ENABLE(POINTER_LOCK)
void Element::webkitRequestPointerLock()
{
if (document()->page())
document()->page()->pointerLockController()->requestPointerLock(this);
}
#endif
SpellcheckAttributeState Element::spellcheckAttributeState() const
{
const AtomicString& value = getAttribute(HTMLNames::spellcheckAttr);
if (value == nullAtom)
return SpellcheckAttributeDefault;
if (equalIgnoringCase(value, "true") || equalIgnoringCase(value, ""))
return SpellcheckAttributeTrue;
if (equalIgnoringCase(value, "false"))
return SpellcheckAttributeFalse;
return SpellcheckAttributeDefault;
}
bool Element::isSpellCheckingEnabled() const
{
for (const Element* element = this; element; element = element->parentOrShadowHostElement()) {
switch (element->spellcheckAttributeState()) {
case SpellcheckAttributeTrue:
return true;
case SpellcheckAttributeFalse:
return false;
case SpellcheckAttributeDefault:
break;
}
}
return true;
}
RenderRegion* Element::renderRegion() const
{
if (renderer() && renderer()->isRenderRegion())
return toRenderRegion(renderer());
return 0;
}
#if ENABLE(CSS_REGIONS)
bool Element::shouldMoveToFlowThread(RenderStyle* styleToUse) const
{
ASSERT(styleToUse);
#if ENABLE(FULLSCREEN_API)
if (document()->webkitIsFullScreen() && document()->webkitCurrentFullScreenElement() == this)
return false;
#endif
if (isInShadowTree())
return false;
if (styleToUse->flowThread().isEmpty())
return false;
return !isRegisteredWithNamedFlow();
}
const AtomicString& Element::webkitRegionOverset() const
{
document()->updateLayoutIgnorePendingStylesheets();
DEFINE_STATIC_LOCAL(AtomicString, undefinedState, ("undefined", AtomicString::ConstructFromLiteral));
if (!document()->cssRegionsEnabled() || !renderRegion())
return undefinedState;
switch (renderRegion()->regionState()) {
case RenderRegion::RegionFit: {
DEFINE_STATIC_LOCAL(AtomicString, fitState, ("fit", AtomicString::ConstructFromLiteral));
return fitState;
}
case RenderRegion::RegionEmpty: {
DEFINE_STATIC_LOCAL(AtomicString, emptyState, ("empty", AtomicString::ConstructFromLiteral));
return emptyState;
}
case RenderRegion::RegionOverset: {
DEFINE_STATIC_LOCAL(AtomicString, overflowState, ("overset", AtomicString::ConstructFromLiteral));
return overflowState;
}
case RenderRegion::RegionUndefined:
return undefinedState;
}
ASSERT_NOT_REACHED();
return undefinedState;
}
Vector<RefPtr<Range> > Element::webkitGetRegionFlowRanges() const
{
document()->updateLayoutIgnorePendingStylesheets();
Vector<RefPtr<Range> > rangeObjects;
if (document()->cssRegionsEnabled() && renderer() && renderer()->isRenderRegion()) {
RenderRegion* region = toRenderRegion(renderer());
if (region->isValid())
region->getRanges(rangeObjects);
}
return rangeObjects;
}
#endif
#ifndef NDEBUG
bool Element::fastAttributeLookupAllowed(const QualifiedName& name) const
{
if (name == HTMLNames::styleAttr)
return false;
#if ENABLE(SVG)
if (isSVGElement())
return !static_cast<const SVGElement*>(this)->isAnimatableAttribute(name);
#endif
return true;
}
#endif
#ifdef DUMP_NODE_STATISTICS
bool Element::hasNamedNodeMap() const
{
return hasRareData() && elementRareData()->attributeMap();
}
#endif
inline void Element::updateName(const AtomicString& oldName, const AtomicString& newName)
{
if (!isInTreeScope())
return;
if (oldName == newName)
return;
updateNameForTreeScope(treeScope(), oldName, newName);
if (!inDocument())
return;
Document* htmlDocument = document();
if (!htmlDocument->isHTMLDocument())
return;
updateNameForDocument(toHTMLDocument(htmlDocument), oldName, newName);
}
void Element::updateNameForTreeScope(TreeScope* scope, const AtomicString& oldName, const AtomicString& newName)
{
ASSERT(isInTreeScope());
ASSERT(oldName != newName);
if (!oldName.isEmpty())
scope->removeElementByName(oldName, this);
if (!newName.isEmpty())
scope->addElementByName(newName, this);
}
void Element::updateNameForDocument(HTMLDocument* document, const AtomicString& oldName, const AtomicString& newName)
{
ASSERT(inDocument());
ASSERT(oldName != newName);
if (WindowNameCollection::nodeMatchesIfNameAttributeMatch(this)) {
const AtomicString& id = WindowNameCollection::nodeMatchesIfIdAttributeMatch(this) ? getIdAttribute() : nullAtom;
if (!oldName.isEmpty() && oldName != id)
document->windowNamedItemMap().remove(oldName.impl(), this);
if (!newName.isEmpty() && newName != id)
document->windowNamedItemMap().add(newName.impl(), this);
}
if (DocumentNameCollection::nodeMatchesIfNameAttributeMatch(this)) {
const AtomicString& id = DocumentNameCollection::nodeMatchesIfIdAttributeMatch(this) ? getIdAttribute() : nullAtom;
if (!oldName.isEmpty() && oldName != id)
document->documentNamedItemMap().remove(oldName.impl(), this);
if (!newName.isEmpty() && newName != id)
document->documentNamedItemMap().add(newName.impl(), this);
}
}
inline void Element::updateId(const AtomicString& oldId, const AtomicString& newId)
{
if (!isInTreeScope())
return;
if (oldId == newId)
return;
updateIdForTreeScope(treeScope(), oldId, newId);
if (!inDocument())
return;
Document* htmlDocument = document();
if (!htmlDocument->isHTMLDocument())
return;
updateIdForDocument(toHTMLDocument(htmlDocument), oldId, newId, UpdateHTMLDocumentNamedItemMapsOnlyIfDiffersFromNameAttribute);
}
void Element::updateIdForTreeScope(TreeScope* scope, const AtomicString& oldId, const AtomicString& newId)
{
ASSERT(isInTreeScope());
ASSERT(oldId != newId);
if (!oldId.isEmpty())
scope->removeElementById(oldId, this);
if (!newId.isEmpty())
scope->addElementById(newId, this);
}
void Element::updateIdForDocument(HTMLDocument* document, const AtomicString& oldId, const AtomicString& newId, HTMLDocumentNamedItemMapsUpdatingCondition condition)
{
ASSERT(inDocument());
ASSERT(oldId != newId);
if (WindowNameCollection::nodeMatchesIfIdAttributeMatch(this)) {
const AtomicString& name = condition == UpdateHTMLDocumentNamedItemMapsOnlyIfDiffersFromNameAttribute && WindowNameCollection::nodeMatchesIfNameAttributeMatch(this) ? getNameAttribute() : nullAtom;
if (!oldId.isEmpty() && oldId != name)
document->windowNamedItemMap().remove(oldId.impl(), this);
if (!newId.isEmpty() && newId != name)
document->windowNamedItemMap().add(newId.impl(), this);
}
if (DocumentNameCollection::nodeMatchesIfIdAttributeMatch(this)) {
const AtomicString& name = condition == UpdateHTMLDocumentNamedItemMapsOnlyIfDiffersFromNameAttribute && DocumentNameCollection::nodeMatchesIfNameAttributeMatch(this) ? getNameAttribute() : nullAtom;
if (!oldId.isEmpty() && oldId != name)
document->documentNamedItemMap().remove(oldId.impl(), this);
if (!newId.isEmpty() && newId != name)
document->documentNamedItemMap().add(newId.impl(), this);
}
}
void Element::updateLabel(TreeScope* scope, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue)
{
ASSERT(hasTagName(labelTag));
if (!inDocument())
return;
if (oldForAttributeValue == newForAttributeValue)
return;
if (!oldForAttributeValue.isEmpty())
scope->removeLabel(oldForAttributeValue, static_cast<HTMLLabelElement*>(this));
if (!newForAttributeValue.isEmpty())
scope->addLabel(newForAttributeValue, static_cast<HTMLLabelElement*>(this));
}
void Element::willModifyAttribute(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue)
{
if (isIdAttributeName(name))
updateId(oldValue, newValue);
else if (name == HTMLNames::nameAttr)
updateName(oldValue, newValue);
else if (name == HTMLNames::forAttr && hasTagName(labelTag)) {
TreeScope* scope = treeScope();
if (scope->shouldCacheLabelsByForAttribute())
updateLabel(scope, oldValue, newValue);
}
if (oldValue != newValue) {
if (attached() && document()->styleResolverIfExists() && document()->styleResolverIfExists()->hasSelectorForAttribute(name.localName()))
setNeedsStyleRecalc();
}
if (OwnPtr<MutationObserverInterestGroup> recipients = MutationObserverInterestGroup::createForAttributesMutation(this, name))
recipients->enqueueMutationRecord(MutationRecord::createAttributes(this, name, oldValue));
#if ENABLE(INSPECTOR)
InspectorInstrumentation::willModifyDOMAttr(document(), this, oldValue, newValue);
#endif
}
void Element::didAddAttribute(const QualifiedName& name, const AtomicString& value)
{
attributeChanged(name, value);
InspectorInstrumentation::didModifyDOMAttr(document(), this, name.localName(), value);
dispatchSubtreeModifiedEvent();
}
void Element::didModifyAttribute(const QualifiedName& name, const AtomicString& value)
{
attributeChanged(name, value);
InspectorInstrumentation::didModifyDOMAttr(document(), this, name.localName(), value);
}
void Element::didRemoveAttribute(const QualifiedName& name)
{
attributeChanged(name, nullAtom);
InspectorInstrumentation::didRemoveDOMAttr(document(), this, name.localName());
dispatchSubtreeModifiedEvent();
}
PassRefPtr<HTMLCollection> Element::ensureCachedHTMLCollection(CollectionType type)
{
if (HTMLCollection* collection = cachedHTMLCollection(type))
return collection;
RefPtr<HTMLCollection> collection;
if (type == TableRows) {
ASSERT(hasTagName(tableTag));
return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLTableRowsCollection>(this, type);
} else if (type == SelectOptions) {
ASSERT(hasTagName(selectTag));
return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLOptionsCollection>(this, type);
} else if (type == FormControls) {
ASSERT(hasTagName(formTag) || hasTagName(fieldsetTag));
return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLFormControlsCollection>(this, type);
#if ENABLE(MICRODATA)
} else if (type == ItemProperties) {
return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLPropertiesCollection>(this, type);
#endif
}
return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLCollection>(this, type);
}
HTMLCollection* Element::cachedHTMLCollection(CollectionType type)
{
return hasRareData() && rareData()->nodeLists() ? rareData()->nodeLists()->cacheWithAtomicName<HTMLCollection>(type) : 0;
}
IntSize Element::savedLayerScrollOffset() const
{
return hasRareData() ? elementRareData()->savedLayerScrollOffset() : IntSize();
}
void Element::setSavedLayerScrollOffset(const IntSize& size)
{
if (size.isZero() && !hasRareData())
return;
ensureElementRareData()->setSavedLayerScrollOffset(size);
}
PassRefPtr<Attr> Element::attrIfExists(const QualifiedName& name)
{
if (AttrNodeList* attrNodeList = attrNodeListForElement(this))
return findAttrNodeInList(attrNodeList, name);
return 0;
}
PassRefPtr<Attr> Element::ensureAttr(const QualifiedName& name)
{
AttrNodeList* attrNodeList = ensureAttrNodeListForElement(this);
RefPtr<Attr> attrNode = findAttrNodeInList(attrNodeList, name);
if (!attrNode) {
attrNode = Attr::create(this, name);
treeScope()->adoptIfNeeded(attrNode.get());
attrNodeList->append(attrNode);
}
return attrNode.release();
}
void Element::detachAttrNodeFromElementWithValue(Attr* attrNode, const AtomicString& value)
{
ASSERT(hasSyntheticAttrChildNodes());
attrNode->detachFromElementWithValue(value);
AttrNodeList* attrNodeList = attrNodeListForElement(this);
for (unsigned i = 0; i < attrNodeList->size(); ++i) {
if (attrNodeList->at(i)->qualifiedName() == attrNode->qualifiedName()) {
attrNodeList->remove(i);
if (attrNodeList->isEmpty())
removeAttrNodeListForElement(this);
return;
}
}
ASSERT_NOT_REACHED();
}
void Element::detachAllAttrNodesFromElement()
{
AttrNodeList* attrNodeList = attrNodeListForElement(this);
ASSERT(attrNodeList);
for (unsigned i = 0; i < attributeCount(); ++i) {
const Attribute* attribute = attributeItem(i);
if (RefPtr<Attr> attrNode = findAttrNodeInList(attrNodeList, attribute->name()))
attrNode->detachFromElementWithValue(attribute->value());
}
removeAttrNodeListForElement(this);
}
bool Element::willRecalcStyle(StyleChange)
{
ASSERT(hasCustomStyleCallbacks());
return true;
}
void Element::didRecalcStyle(StyleChange)
{
ASSERT(hasCustomStyleCallbacks());
}
PassRefPtr<RenderStyle> Element::customStyleForRenderer()
{
ASSERT(hasCustomStyleCallbacks());
return 0;
}
void Element::cloneAttributesFromElement(const Element& other)
{
if (hasSyntheticAttrChildNodes())
detachAllAttrNodesFromElement();
other.synchronizeAllAttributes();
if (!other.m_elementData) {
m_elementData.clear();
return;
}
ASSERT(!inDocument());
const AtomicString& oldID = getIdAttribute();
const AtomicString& newID = other.getIdAttribute();
if (!oldID.isNull() || !newID.isNull())
updateId(oldID, newID);
const AtomicString& oldName = getNameAttribute();
const AtomicString& newName = other.getNameAttribute();
if (!oldName.isNull() || !newName.isNull())
updateName(oldName, newName);
if (other.m_elementData->isUnique()
&& !other.m_elementData->presentationAttributeStyle()
&& (!other.m_elementData->inlineStyle() || !other.m_elementData->inlineStyle()->hasCSSOMWrapper()))
const_cast<Element&>(other).m_elementData = static_cast<const UniqueElementData*>(other.m_elementData.get())->makeShareableCopy();
if (!other.m_elementData->isUnique())
m_elementData = other.m_elementData;
else
m_elementData = other.m_elementData->makeUniqueCopy();
for (unsigned i = 0; i < m_elementData->length(); ++i) {
const Attribute* attribute = const_cast<const ElementData*>(m_elementData.get())->attributeItem(i);
attributeChangedFromParserOrByCloning(attribute->name(), attribute->value(), ModifiedByCloning);
}
}
void Element::cloneDataFromElement(const Element& other)
{
cloneAttributesFromElement(other);
copyNonAttributePropertiesFromElement(other);
}
void Element::createUniqueElementData()
{
if (!m_elementData)
m_elementData = UniqueElementData::create();
else {
ASSERT(!m_elementData->isUnique());
m_elementData = static_cast<ShareableElementData*>(m_elementData.get())->makeUniqueCopy();
}
}
#if ENABLE(SVG)
bool Element::hasPendingResources() const
{
return hasRareData() && elementRareData()->hasPendingResources();
}
void Element::setHasPendingResources()
{
ensureElementRareData()->setHasPendingResources(true);
}
void Element::clearHasPendingResources()
{
ensureElementRareData()->setHasPendingResources(false);
}
#endif
void ElementData::deref()
{
if (!derefBase())
return;
if (m_isUnique)
delete static_cast<UniqueElementData*>(this);
else
delete static_cast<ShareableElementData*>(this);
}
ElementData::ElementData()
: m_isUnique(true)
, m_arraySize(0)
, m_hasNameAttribute(false)
, m_presentationAttributeStyleIsDirty(false)
, m_styleAttributeIsDirty(false)
#if ENABLE(SVG)
, m_animatedSVGAttributesAreDirty(false)
#endif
{
}
ElementData::ElementData(unsigned arraySize)
: m_isUnique(false)
, m_arraySize(arraySize)
, m_hasNameAttribute(false)
, m_presentationAttributeStyleIsDirty(false)
, m_styleAttributeIsDirty(false)
#if ENABLE(SVG)
, m_animatedSVGAttributesAreDirty(false)
#endif
{
}
struct SameSizeAsElementData : public RefCounted<SameSizeAsElementData> {
unsigned bitfield;
void* refPtrs[3];
};
COMPILE_ASSERT(sizeof(ElementData) == sizeof(SameSizeAsElementData), element_attribute_data_should_stay_small);
static size_t sizeForShareableElementDataWithAttributeCount(unsigned count)
{
return sizeof(ShareableElementData) + sizeof(Attribute) * count;
}
PassRefPtr<ShareableElementData> ShareableElementData::createWithAttributes(const Vector<Attribute>& attributes)
{
void* slot = WTF::fastMalloc(sizeForShareableElementDataWithAttributeCount(attributes.size()));
return adoptRef(new (NotNull, slot) ShareableElementData(attributes));
}
PassRefPtr<UniqueElementData> UniqueElementData::create()
{
return adoptRef(new UniqueElementData);
}
ShareableElementData::ShareableElementData(const Vector<Attribute>& attributes)
: ElementData(attributes.size())
{
for (unsigned i = 0; i < m_arraySize; ++i)
new (NotNull, &m_attributeArray[i]) Attribute(attributes[i]);
}
ShareableElementData::~ShareableElementData()
{
for (unsigned i = 0; i < m_arraySize; ++i)
m_attributeArray[i].~Attribute();
}
ShareableElementData::ShareableElementData(const UniqueElementData& other)
: ElementData(other, false)
{
ASSERT(!other.m_presentationAttributeStyle);
if (other.m_inlineStyle) {
ASSERT(!other.m_inlineStyle->hasCSSOMWrapper());
m_inlineStyle = other.m_inlineStyle->immutableCopyIfNeeded();
}
for (unsigned i = 0; i < m_arraySize; ++i)
new (NotNull, &m_attributeArray[i]) Attribute(other.m_attributeVector.at(i));
}
ElementData::ElementData(const ElementData& other, bool isUnique)
: m_isUnique(isUnique)
, m_arraySize(isUnique ? 0 : other.length())
, m_hasNameAttribute(other.m_hasNameAttribute)
, m_presentationAttributeStyleIsDirty(other.m_presentationAttributeStyleIsDirty)
, m_styleAttributeIsDirty(other.m_styleAttributeIsDirty)
#if ENABLE(SVG)
, m_animatedSVGAttributesAreDirty(other.m_animatedSVGAttributesAreDirty)
#endif
, m_classNames(other.m_classNames)
, m_idForStyleResolution(other.m_idForStyleResolution)
{
}
UniqueElementData::UniqueElementData()
{
}
UniqueElementData::UniqueElementData(const UniqueElementData& other)
: ElementData(other, true)
, m_presentationAttributeStyle(other.m_presentationAttributeStyle)
, m_attributeVector(other.m_attributeVector)
{
m_inlineStyle = other.m_inlineStyle ? other.m_inlineStyle->mutableCopy() : 0;
}
UniqueElementData::UniqueElementData(const ShareableElementData& other)
: ElementData(other, true)
{
ASSERT(!other.m_inlineStyle || !other.m_inlineStyle->isMutable());
m_inlineStyle = other.m_inlineStyle;
m_attributeVector.reserveCapacity(other.length());
for (unsigned i = 0; i < other.length(); ++i)
m_attributeVector.uncheckedAppend(other.m_attributeArray[i]);
}
PassRefPtr<UniqueElementData> ElementData::makeUniqueCopy() const
{
if (isUnique())
return adoptRef(new UniqueElementData(static_cast<const UniqueElementData&>(*this)));
return adoptRef(new UniqueElementData(static_cast<const ShareableElementData&>(*this)));
}
PassRefPtr<ShareableElementData> UniqueElementData::makeShareableCopy() const
{
void* slot = WTF::fastMalloc(sizeForShareableElementDataWithAttributeCount(m_attributeVector.size()));
return adoptRef(new (NotNull, slot) ShareableElementData(*this));
}
void UniqueElementData::addAttribute(const QualifiedName& attributeName, const AtomicString& value)
{
m_attributeVector.append(Attribute(attributeName, value));
}
void UniqueElementData::removeAttribute(unsigned index)
{
ASSERT_WITH_SECURITY_IMPLICATION(index < length());
m_attributeVector.remove(index);
}
bool ElementData::isEquivalent(const ElementData* other) const
{
if (!other)
return isEmpty();
unsigned len = length();
if (len != other->length())
return false;
for (unsigned i = 0; i < len; i++) {
const Attribute* attribute = attributeItem(i);
const Attribute* otherAttr = other->getAttributeItem(attribute->name());
if (!otherAttr || attribute->value() != otherAttr->value())
return false;
}
return true;
}
unsigned ElementData::getAttributeItemIndexSlowCase(const AtomicString& name, bool shouldIgnoreAttributeCase) const
{
for (unsigned i = 0; i < length(); ++i) {
const Attribute* attribute = attributeItem(i);
if (!attribute->name().hasPrefix()) {
if (shouldIgnoreAttributeCase && equalIgnoringCase(name, attribute->localName()))
return i;
} else {
if (equalPossiblyIgnoringCase(name, attribute->name().toString(), shouldIgnoreAttributeCase))
return i;
}
}
return attributeNotFound;
}
unsigned ElementData::getAttributeItemIndexForAttributeNode(const Attr* attr) const
{
ASSERT(attr);
const Attribute* attributes = attributeBase();
unsigned count = length();
for (unsigned i = 0; i < count; ++i) {
if (attributes[i].name() == attr->qualifiedName())
return i;
}
return attributeNotFound;
}
Attribute* UniqueElementData::getAttributeItem(const QualifiedName& name)
{
unsigned count = length();
for (unsigned i = 0; i < count; ++i) {
if (m_attributeVector.at(i).name().matches(name))
return &m_attributeVector.at(i);
}
return 0;
}
Attribute* UniqueElementData::attributeItem(unsigned index)
{
ASSERT_WITH_SECURITY_IMPLICATION(index < length());
return &m_attributeVector.at(index);
}
}