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Element.h
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Element.h
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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Peter Kelly (pmk@post.com)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "AXTextStateChangeIntent.h"
#include "ContainerNode.h"
#include "ElementIdentifier.h"
#include "EventOptions.h"
#include "FocusOptions.h"
#include "HitTestRequest.h"
#include "QualifiedName.h"
#include "RenderPtr.h"
#include "ScrollTypes.h"
#include "ShadowRootMode.h"
#include "SimulatedClickOptions.h"
#include "WebAnimationTypes.h"
#include <JavaScriptCore/Forward.h>
#define DUMP_NODE_STATISTICS 0
namespace JSC {
class JSGlobalObject;
}
namespace WebCore {
class Attr;
class Attribute;
class AttributeIteratorAccessor;
class CustomElementDefaultARIA;
class CustomElementReactionQueue;
class DatasetDOMStringMap;
class DOMRect;
class DOMRectList;
class DOMTokenList;
class DeferredPromise;
class Document;
class ElementAnimationRareData;
class ElementData;
class ElementRareData;
class Frame;
class HTMLDocument;
class IntSize;
class JSCustomElementInterface;
class KeyframeEffectStack;
class KeyboardEvent;
class Locale;
class PlatformKeyboardEvent;
class PlatformMouseEvent;
class PlatformWheelEvent;
class PseudoElement;
class RenderStyle;
class RenderTreePosition;
class SpaceSplitString;
class StylePropertyMap;
class StylePropertyMapReadOnly;
class Text;
class UniqueElementData;
class WebAnimation;
enum class AnimationImpact;
enum class EventHandling : uint8_t;
enum class EventProcessing : uint8_t;
enum class FullscreenNavigationUI : uint8_t;
enum class IsSyntheticClick : bool { No, Yes };
enum class ResolveURLs : uint8_t { No, NoExcludingURLsForPrivacy, Yes, YesExcludingURLsForPrivacy };
enum class SelectionRestorationMode : uint8_t;
struct FullscreenOptions;
struct GetAnimationsOptions;
struct IntersectionObserverData;
struct KeyframeAnimationOptions;
struct ResizeObserverData;
struct ScrollIntoViewOptions;
struct ScrollToOptions;
struct SecurityPolicyViolationEventInit;
struct ShadowRootInit;
using ExplicitlySetAttrElementsMap = HashMap<QualifiedName, Vector<WeakPtr<Element, WeakPtrImplWithEventTargetData>>>;
namespace Style {
class Resolver;
enum class Change : uint8_t;
struct ElementStyle;
struct ResolutionContext;
}
class Element : public ContainerNode {
WTF_MAKE_ISO_ALLOCATED(Element);
public:
static Ref<Element> create(const QualifiedName&, Document&);
virtual ~Element();
WEBCORE_EXPORT bool hasAttribute(const QualifiedName&) const;
WEBCORE_EXPORT const AtomString& getAttribute(const QualifiedName&) const;
AtomString getAttributeForBindings(const QualifiedName&, ResolveURLs = ResolveURLs::NoExcludingURLsForPrivacy) const;
template<typename... QualifiedNames>
inline const AtomString& getAttribute(const QualifiedName&, const QualifiedNames&...) const;
WEBCORE_EXPORT void setAttribute(const QualifiedName&, const AtomString& value);
void setAttributeWithoutOverwriting(const QualifiedName&, const AtomString& value);
WEBCORE_EXPORT void setAttributeWithoutSynchronization(const QualifiedName&, const AtomString& value);
void setSynchronizedLazyAttribute(const QualifiedName&, const AtomString& value);
bool removeAttribute(const QualifiedName&);
Vector<String> getAttributeNames() const;
// Typed getters and setters for language bindings.
WEBCORE_EXPORT int getIntegralAttribute(const QualifiedName& attributeName) const;
WEBCORE_EXPORT void setIntegralAttribute(const QualifiedName& attributeName, int value);
WEBCORE_EXPORT unsigned getUnsignedIntegralAttribute(const QualifiedName& attributeName) const;
WEBCORE_EXPORT void setUnsignedIntegralAttribute(const QualifiedName& attributeName, unsigned value);
WEBCORE_EXPORT Element* getElementAttribute(const QualifiedName& attributeName) const;
WEBCORE_EXPORT void setElementAttribute(const QualifiedName& attributeName, Element* value);
WEBCORE_EXPORT std::optional<Vector<RefPtr<Element>>> getElementsArrayAttribute(const QualifiedName& attributeName) const;
WEBCORE_EXPORT void setElementsArrayAttribute(const QualifiedName& attributeName, std::optional<Vector<RefPtr<Element>>>&& value);
static bool isElementReflectionAttribute(const QualifiedName&);
static bool isElementsArrayReflectionAttribute(const QualifiedName&);
// Call this to get the value of an attribute that is known not to be the style
// attribute or one of the SVG animatable attributes.
inline bool hasAttributeWithoutSynchronization(const QualifiedName&) const;
inline const AtomString& attributeWithoutSynchronization(const QualifiedName&) const;
#if DUMP_NODE_STATISTICS
bool hasNamedNodeMap() const;
#endif
WEBCORE_EXPORT bool hasAttributes() const;
// This variant will not update the potentially invalid attributes. To be used when not interested
// in style attribute or one of the SVG animation attributes.
bool hasAttributesWithoutUpdate() const;
WEBCORE_EXPORT bool hasAttribute(const AtomString& qualifiedName) const;
WEBCORE_EXPORT bool hasAttributeNS(const AtomString& namespaceURI, const AtomString& localName) const;
WEBCORE_EXPORT const AtomString& getAttribute(const AtomString& qualifiedName) const;
WEBCORE_EXPORT const AtomString& getAttributeNS(const AtomString& namespaceURI, const AtomString& localName) const;
AtomString getAttributeForBindings(const AtomString& qualifiedName, ResolveURLs = ResolveURLs::NoExcludingURLsForPrivacy) const;
inline AtomString getAttributeNSForBindings(const AtomString& namespaceURI, const AtomString& localName, ResolveURLs = ResolveURLs::NoExcludingURLsForPrivacy) const;
WEBCORE_EXPORT ExceptionOr<void> setAttribute(const AtomString& qualifiedName, const AtomString& value);
static ExceptionOr<QualifiedName> parseAttributeName(const AtomString& namespaceURI, const AtomString& qualifiedName);
WEBCORE_EXPORT ExceptionOr<void> setAttributeNS(const AtomString& namespaceURI, const AtomString& qualifiedName, const AtomString& value);
ExceptionOr<bool> toggleAttribute(const AtomString& qualifiedName, std::optional<bool> force);
inline const AtomString& getIdAttribute() const;
inline void setIdAttribute(const AtomString&);
inline const AtomString& getNameAttribute() const;
// Call this to get the value of the id attribute for style resolution purposes.
// The value will already be lowercased if the document is in compatibility mode,
// so this function is not suitable for non-style uses.
inline const AtomString& idForStyleResolution() const;
// Internal methods that assume the existence of attribute storage, one should use hasAttributes()
// before calling them.
inline AttributeIteratorAccessor attributesIterator() const;
inline unsigned attributeCount() const;
inline const Attribute& attributeAt(unsigned index) const;
inline const Attribute* findAttributeByName(const QualifiedName&) const;
inline unsigned findAttributeIndexByName(const QualifiedName&) const;
inline unsigned findAttributeIndexByName(const AtomString&, bool shouldIgnoreAttributeCase) const;
WEBCORE_EXPORT void scrollIntoView(std::optional<std::variant<bool, ScrollIntoViewOptions>>&& arg);
WEBCORE_EXPORT void scrollIntoView(bool alignToTop = true);
WEBCORE_EXPORT void scrollIntoViewIfNeeded(bool centerIfNeeded = true);
WEBCORE_EXPORT void scrollIntoViewIfNotVisible(bool centerIfNotVisible = true);
void scrollBy(const ScrollToOptions&);
void scrollBy(double x, double y);
virtual void scrollTo(const ScrollToOptions&, ScrollClamping = ScrollClamping::Clamped, ScrollSnapPointSelectionMethod = ScrollSnapPointSelectionMethod::Closest);
void scrollTo(double x, double y);
// These are only used by WebKitLegacy DOM API.
WEBCORE_EXPORT void scrollByLines(int lines);
WEBCORE_EXPORT void scrollByPages(int pages);
WEBCORE_EXPORT int offsetLeftForBindings();
WEBCORE_EXPORT int offsetLeft();
WEBCORE_EXPORT int offsetTopForBindings();
WEBCORE_EXPORT int offsetTop();
WEBCORE_EXPORT int offsetWidth();
WEBCORE_EXPORT int offsetHeight();
bool mayCauseRepaintInsideViewport(const IntRect* visibleRect = nullptr) const;
// FIXME: Replace uses of offsetParent in the platform with calls
// to the render layer and merge bindingsOffsetParent and offsetParent.
WEBCORE_EXPORT Element* offsetParentForBindings();
inline const Element* rootElement() const;
Element* offsetParent();
WEBCORE_EXPORT int clientLeft();
WEBCORE_EXPORT int clientTop();
WEBCORE_EXPORT int clientWidth();
WEBCORE_EXPORT int clientHeight();
virtual int scrollLeft();
virtual int scrollTop();
virtual void setScrollLeft(int);
virtual void setScrollTop(int);
virtual int scrollWidth();
virtual int scrollHeight();
// This updates layout, and has custom handling for SVG.
WEBCORE_EXPORT IntRect boundsInRootViewSpace();
// This does not update layout, and uses absoluteBoundingBoxRect().
WEBCORE_EXPORT IntRect boundingBoxInRootViewCoordinates() const;
WEBCORE_EXPORT std::optional<std::pair<RenderObject*, FloatRect>> boundingAbsoluteRectWithoutLayout() const;
WEBCORE_EXPORT FloatRect boundingClientRect();
WEBCORE_EXPORT Ref<DOMRectList> getClientRects();
Ref<DOMRect> getBoundingClientRect();
// Returns the absolute bounding box translated into screen coordinates.
WEBCORE_EXPORT IntRect screenRect() const;
WEBCORE_EXPORT bool removeAttribute(const AtomString& qualifiedName);
WEBCORE_EXPORT bool removeAttributeNS(const AtomString& namespaceURI, const AtomString& localName);
void removeAttributeForBindings(const AtomString& qualifiedName) { removeAttribute(qualifiedName); }
void removeAttributeNSForBindings(const AtomString& namespaceURI, const AtomString& localName) { removeAttributeNS(namespaceURI, localName); }
Ref<Attr> detachAttribute(unsigned index);
WEBCORE_EXPORT RefPtr<Attr> getAttributeNode(const AtomString& qualifiedName);
WEBCORE_EXPORT RefPtr<Attr> getAttributeNodeNS(const AtomString& namespaceURI, const AtomString& localName);
WEBCORE_EXPORT ExceptionOr<RefPtr<Attr>> setAttributeNode(Attr&);
WEBCORE_EXPORT ExceptionOr<RefPtr<Attr>> setAttributeNodeNS(Attr&);
WEBCORE_EXPORT ExceptionOr<Ref<Attr>> removeAttributeNode(Attr&);
RefPtr<Attr> attrIfExists(const QualifiedName&);
RefPtr<Attr> attrIfExists(const AtomString& localName, bool shouldIgnoreAttributeCase);
Ref<Attr> ensureAttr(const QualifiedName&);
const Vector<RefPtr<Attr>>& attrNodeList();
const QualifiedName& tagQName() const { return m_tagName; }
#if ENABLE(JIT)
static ptrdiff_t tagQNameMemoryOffset() { return OBJECT_OFFSETOF(Element, m_tagName); }
#endif
String tagName() const { return nodeName(); }
bool hasTagName(const QualifiedName& tagName) const { return m_tagName.matches(tagName); }
bool hasTagName(const HTMLQualifiedName& tagName) const { return ContainerNode::hasTagName(tagName); }
bool hasTagName(const MathMLQualifiedName& tagName) const { return ContainerNode::hasTagName(tagName); }
inline bool hasTagName(const SVGQualifiedName& tagName) const;
bool hasLocalName(const AtomString& other) const { return m_tagName.localName() == other; }
const AtomString& localName() const final { return m_tagName.localName(); }
const AtomString& prefix() const final { return m_tagName.prefix(); }
const AtomString& namespaceURI() const final { return m_tagName.namespaceURI(); }
ElementName elementName() const { return m_tagName.elementName(); }
Namespace nodeNamespace() const { return m_tagName.nodeNamespace(); }
ExceptionOr<void> setPrefix(const AtomString&) final;
String nodeName() const override;
Ref<Element> cloneElementWithChildren(Document&);
Ref<Element> cloneElementWithoutChildren(Document&);
void normalizeAttributes();
String nodeNamePreservingCase() const;
WEBCORE_EXPORT void setBooleanAttribute(const QualifiedName& name, bool);
// For exposing to DOM only.
WEBCORE_EXPORT NamedNodeMap& attributes() const;
enum AttributeModificationReason {
ModifiedDirectly,
ModifiedByCloning
};
// These functions are called whenever an attribute is added, changed or removed.
virtual void attributeChanged(const QualifiedName&, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason = ModifiedDirectly);
virtual void parseAttribute(const QualifiedName&, const AtomString&) { }
// Only called by the parser immediately after element construction.
void parserSetAttributes(const Vector<Attribute>&);
bool isEventHandlerAttribute(const Attribute&) const;
virtual bool attributeContainsJavaScriptURL(const Attribute&) const;
// Remove attributes that might introduce scripting from the vector leaving the element unchanged.
void stripScriptingAttributes(Vector<Attribute>&) const;
const ElementData* elementData() const { return m_elementData.get(); }
static ptrdiff_t elementDataMemoryOffset() { return OBJECT_OFFSETOF(Element, m_elementData); }
inline UniqueElementData& ensureUniqueElementData();
void synchronizeAllAttributes() const;
// Clones attributes only.
void cloneAttributesFromElement(const Element&);
// Clones all attribute-derived data, including subclass specifics (through copyNonAttributeProperties.)
void cloneDataFromElement(const Element&);
virtual void didMoveToNewDocument(Document& oldDocument, Document& newDocument);
bool hasEquivalentAttributes(const Element& other) const;
virtual void copyNonAttributePropertiesFromElement(const Element&) { }
virtual RenderPtr<RenderElement> createElementRenderer(RenderStyle&&, const RenderTreePosition&);
virtual bool rendererIsNeeded(const RenderStyle&);
virtual bool rendererIsEverNeeded() { return true; }
inline ShadowRoot* shadowRoot() const; // Defined in ElementRareData.h
ShadowRoot* shadowRootForBindings(JSC::JSGlobalObject&) const;
WEBCORE_EXPORT ExceptionOr<ShadowRoot&> attachShadow(const ShadowRootInit&);
ExceptionOr<ShadowRoot&> attachDeclarativeShadow(ShadowRootMode, bool delegatesFocus);
RefPtr<ShadowRoot> userAgentShadowRoot() const;
WEBCORE_EXPORT ShadowRoot& ensureUserAgentShadowRoot();
WEBCORE_EXPORT ShadowRoot& createUserAgentShadowRoot();
void setIsDefinedCustomElement(JSCustomElementInterface&);
void setIsFailedCustomElement();
void setIsFailedOrPrecustomizedCustomElementWithoutClearingReactionQueue();
void clearReactionQueueFromFailedCustomElement();
void setIsCustomElementUpgradeCandidate();
void enqueueToUpgrade(JSCustomElementInterface&);
CustomElementReactionQueue* reactionQueue() const;
CustomElementDefaultARIA& customElementDefaultARIA();
CustomElementDefaultARIA* customElementDefaultARIAIfExists();
// FIXME: This should not be virtual. Please do not add additional overrides of this function.
virtual const AtomString& shadowPseudoId() const;
bool isInActiveChain() const { return isUserActionElement() && isUserActionElementInActiveChain(); }
bool active() const { return isUserActionElement() && isUserActionElementActive(); }
bool hovered() const { return isUserActionElement() && isUserActionElementHovered(); }
bool focused() const { return isUserActionElement() && isUserActionElementFocused(); }
bool isBeingDragged() const { return isUserActionElement() && isUserActionElementDragged(); }
bool hasFocusVisible() const { return isUserActionElement() && isUserActionElementHasFocusVisible(); }
bool hasFocusWithin() const { return isUserActionElement() && isUserActionElementHasFocusWithin(); };
virtual void setActive(bool = true, Style::InvalidationScope = Style::InvalidationScope::All);
virtual void setHovered(bool = true, Style::InvalidationScope = Style::InvalidationScope::All, HitTestRequest = {});
virtual void setFocus(bool, FocusVisibility = FocusVisibility::Invisible);
void setBeingDragged(bool);
void setHasFocusVisible(bool);
void setHasFocusWithin(bool);
void setHasTentativeFocus(bool);
std::optional<int> tabIndexSetExplicitly() const;
bool shouldBeIgnoredInSequentialFocusNavigation() const { return defaultTabIndex() < 0 && !supportsFocus(); }
virtual bool supportsFocus() const;
virtual bool isFocusable() const;
virtual bool isKeyboardFocusable(KeyboardEvent*) const;
virtual bool isMouseFocusable() const;
virtual bool shouldUseInputMethod();
virtual int tabIndexForBindings() const;
WEBCORE_EXPORT void setTabIndexForBindings(int);
// Used by the HTMLElement and SVGElement IDLs.
WEBCORE_EXPORT const AtomString& nonce() const;
WEBCORE_EXPORT void setNonce(const AtomString&);
void hideNonce();
ExceptionOr<void> insertAdjacentHTML(const String& where, const String& html, NodeVector* addedNodes);
WEBCORE_EXPORT ExceptionOr<Element*> insertAdjacentElement(const String& where, Element& newChild);
WEBCORE_EXPORT ExceptionOr<void> insertAdjacentHTML(const String& where, const String& html);
WEBCORE_EXPORT ExceptionOr<void> insertAdjacentText(const String& where, String&& text);
const RenderStyle* computedStyle(PseudoId = PseudoId::None) override;
const RenderStyle* computedStyleForEditability();
bool needsStyleInvalidation() const;
bool isFocusableWithoutResolvingFullStyle() const;
// Methods for indicating the style is affected by dynamic updates (e.g., children changing, our position changing in our sibling list, etc.)
bool styleAffectedByEmpty() const { return hasStyleFlag(NodeStyleFlag::StyleAffectedByEmpty); }
bool descendantsAffectedByPreviousSibling() const { return hasStyleFlag(NodeStyleFlag::DescendantsAffectedByPreviousSibling); }
bool childrenAffectedByFirstChildRules() const { return hasStyleFlag(NodeStyleFlag::ChildrenAffectedByFirstChildRules); }
bool childrenAffectedByLastChildRules() const { return hasStyleFlag(NodeStyleFlag::ChildrenAffectedByLastChildRules); }
bool childrenAffectedByForwardPositionalRules() const { return hasStyleFlag(NodeStyleFlag::ChildrenAffectedByForwardPositionalRules); }
bool descendantsAffectedByForwardPositionalRules() const { return hasStyleFlag(NodeStyleFlag::DescendantsAffectedByForwardPositionalRules); }
bool childrenAffectedByBackwardPositionalRules() const { return hasStyleFlag(NodeStyleFlag::ChildrenAffectedByBackwardPositionalRules); }
bool descendantsAffectedByBackwardPositionalRules() const { return hasStyleFlag(NodeStyleFlag::DescendantsAffectedByBackwardPositionalRules); }
bool childrenAffectedByPropertyBasedBackwardPositionalRules() const { return hasStyleFlag(NodeStyleFlag::ChildrenAffectedByPropertyBasedBackwardPositionalRules); }
bool affectsNextSiblingElementStyle() const { return hasStyleFlag(NodeStyleFlag::AffectsNextSiblingElementStyle); }
bool styleIsAffectedByPreviousSibling() const { return hasStyleFlag(NodeStyleFlag::StyleIsAffectedByPreviousSibling); }
unsigned childIndex() const { return hasRareData() ? rareDataChildIndex() : 0; }
bool hasFlagsSetDuringStylingOfChildren() const;
void setStyleAffectedByEmpty() { setStyleFlag(NodeStyleFlag::StyleAffectedByEmpty); }
void setDescendantsAffectedByPreviousSibling() { setStyleFlag(NodeStyleFlag::DescendantsAffectedByPreviousSibling); }
void setChildrenAffectedByFirstChildRules() { setStyleFlag(NodeStyleFlag::ChildrenAffectedByFirstChildRules); }
void setChildrenAffectedByLastChildRules() { setStyleFlag(NodeStyleFlag::ChildrenAffectedByLastChildRules); }
void setChildrenAffectedByForwardPositionalRules() { setStyleFlag(NodeStyleFlag::ChildrenAffectedByForwardPositionalRules); }
void setDescendantsAffectedByForwardPositionalRules() { setStyleFlag(NodeStyleFlag::DescendantsAffectedByForwardPositionalRules); }
void setChildrenAffectedByBackwardPositionalRules() { setStyleFlag(NodeStyleFlag::ChildrenAffectedByBackwardPositionalRules); }
void setDescendantsAffectedByBackwardPositionalRules() { setStyleFlag(NodeStyleFlag::DescendantsAffectedByBackwardPositionalRules); }
void setChildrenAffectedByPropertyBasedBackwardPositionalRules() { setStyleFlag(NodeStyleFlag::ChildrenAffectedByPropertyBasedBackwardPositionalRules); }
void setAffectsNextSiblingElementStyle() { setStyleFlag(NodeStyleFlag::AffectsNextSiblingElementStyle); }
void setStyleIsAffectedByPreviousSibling() { setStyleFlag(NodeStyleFlag::StyleIsAffectedByPreviousSibling); }
void setChildIndex(unsigned);
AtomString effectiveLang() const;
AtomString langFromAttribute() const;
Locale& locale() const;
virtual bool accessKeyAction(bool /*sendToAnyEvent*/) { return false; }
virtual bool isURLAttribute(const Attribute&) const { return false; }
virtual bool attributeContainsURL(const Attribute& attribute) const { return isURLAttribute(attribute); }
String resolveURLStringIfNeeded(const String& urlString, ResolveURLs = ResolveURLs::Yes, const URL& base = URL()) const;
virtual String completeURLsInAttributeValue(const URL& base, const Attribute&, ResolveURLs = ResolveURLs::Yes) const;
virtual bool isHTMLContentAttribute(const Attribute&) const { return false; }
WEBCORE_EXPORT URL getURLAttribute(const QualifiedName&) const;
inline URL getURLAttributeForBindings(const QualifiedName&) const;
URL getNonEmptyURLAttribute(const QualifiedName&) const;
virtual const AtomString& imageSourceURL() const;
virtual AtomString target() const { return nullAtom(); }
RefPtr<Element> findFocusDelegate();
static AXTextStateChangeIntent defaultFocusTextStateChangeIntent() { return AXTextStateChangeIntent(AXTextStateChangeTypeSelectionMove, AXTextSelection { AXTextSelectionDirectionDiscontiguous, AXTextSelectionGranularityUnknown, true }); }
virtual void focus(const FocusOptions& = { });
virtual void focusForBindings(FocusOptions&&);
void findTargetAndUpdateFocusAppearance(SelectionRestorationMode, SelectionRevealMode = SelectionRevealMode::Reveal);
virtual RefPtr<Element> focusAppearanceUpdateTarget();
virtual void updateFocusAppearance(SelectionRestorationMode, SelectionRevealMode = SelectionRevealMode::Reveal);
virtual void blur();
virtual void runFocusingStepsForAutofocus();
WEBCORE_EXPORT String innerHTML() const;
WEBCORE_EXPORT String outerHTML() const;
WEBCORE_EXPORT ExceptionOr<void> setInnerHTML(const String&);
WEBCORE_EXPORT ExceptionOr<void> setOuterHTML(const String&);
WEBCORE_EXPORT String innerText();
WEBCORE_EXPORT String outerText();
virtual String title() const;
const AtomString& pseudo() const;
WEBCORE_EXPORT void setPseudo(const AtomString&);
// Use Document::registerForDocumentActivationCallbacks() to subscribe to these
virtual void prepareForDocumentSuspension() { }
virtual void resumeFromDocumentSuspension() { }
virtual void willBecomeFullscreenElement();
virtual void ancestorWillEnterFullscreen() { }
virtual void didBecomeFullscreenElement() { }
virtual void willStopBeingFullscreenElement() { }
virtual void didStopBeingFullscreenElement() { }
bool isFinishedParsingChildren() const { return isParsingChildrenFinished(); }
void finishParsingChildren() override;
void beginParsingChildren() final;
PseudoElement& ensurePseudoElement(PseudoId);
WEBCORE_EXPORT PseudoElement* beforePseudoElement() const;
WEBCORE_EXPORT PseudoElement* afterPseudoElement() const;
bool childNeedsShadowWalker() const;
void didShadowTreeAwareChildrenChange();
virtual bool matchesValidPseudoClass() const;
virtual bool matchesInvalidPseudoClass() const;
virtual bool matchesReadWritePseudoClass() const;
virtual bool matchesIndeterminatePseudoClass() const;
virtual bool matchesDefaultPseudoClass() const;
WEBCORE_EXPORT ExceptionOr<bool> matches(const String& selectors);
WEBCORE_EXPORT ExceptionOr<Element*> closest(const String& selectors);
virtual bool shouldAppearIndeterminate() const;
WEBCORE_EXPORT DOMTokenList& classList();
SpaceSplitString partNames() const;
DOMTokenList& part();
DatasetDOMStringMap& dataset();
#if ENABLE(VIDEO)
virtual bool isMediaElement() const { return false; }
#endif
virtual bool isFormControlElement() const { return false; }
virtual bool isFormControlElementWithState() const { return false; }
virtual bool isSpinButtonElement() const { return false; }
virtual bool isTextFormControlElement() const { return false; }
virtual bool isTextField() const { return false; }
virtual bool isTextPlaceholderElement() const { return false; }
virtual bool isOptionalFormControl() const { return false; }
virtual bool isRequiredFormControl() const { return false; }
virtual bool isInRange() const { return false; }
virtual bool isOutOfRange() const { return false; }
virtual bool isUploadButton() const { return false; }
virtual bool isSliderContainerElement() const { return false; }
virtual bool isSliderThumbElement() const { return false; }
virtual bool isHTMLTablePartElement() const { return false; }
bool canContainRangeEndPoint() const override;
// Used for disabled form elements; if true, prevents mouse events from being dispatched
// to event listeners, and prevents DOMActivate events from being sent at all.
virtual bool isDisabledFormControl() const { return false; }
virtual bool childShouldCreateRenderer(const Node&) const;
KeyframeEffectStack* keyframeEffectStack(PseudoId) const;
KeyframeEffectStack& ensureKeyframeEffectStack(PseudoId);
bool hasKeyframeEffects(PseudoId) const;
const AnimationCollection* animations(PseudoId) const;
bool hasCompletedTransitionForProperty(PseudoId, CSSPropertyID) const;
bool hasRunningTransitionForProperty(PseudoId, CSSPropertyID) const;
bool hasRunningTransitions(PseudoId) const;
AnimationCollection& ensureAnimations(PseudoId);
PropertyToTransitionMap& ensureCompletedTransitionsByProperty(PseudoId);
PropertyToTransitionMap& ensureRunningTransitionsByProperty(PseudoId);
CSSAnimationCollection& animationsCreatedByMarkup(PseudoId);
void setAnimationsCreatedByMarkup(PseudoId, CSSAnimationCollection&&);
const RenderStyle* lastStyleChangeEventStyle(PseudoId) const;
void setLastStyleChangeEventStyle(PseudoId, std::unique_ptr<const RenderStyle>&&);
void cssAnimationsDidUpdate(PseudoId);
void keyframesRuleDidChange(PseudoId);
bool hasPendingKeyframesUpdate(PseudoId) const;
bool isInTopLayer() const { return hasNodeFlag(NodeFlag::IsInTopLayer); }
void addToTopLayer();
void removeFromTopLayer();
#if ENABLE(FULLSCREEN_API)
bool hasFullscreenFlag() const { return hasNodeFlag(NodeFlag::IsFullscreen); }
bool hasIFrameFullscreenFlag() const { return hasNodeFlag(NodeFlag::IsIFrameFullscreen); }
void setFullscreenFlag(bool);
void setIFrameFullscreenFlag(bool);
WEBCORE_EXPORT void webkitRequestFullscreen();
virtual void requestFullscreen(FullscreenOptions&&, RefPtr<DeferredPromise>&&);
#endif
ExceptionOr<void> setPointerCapture(int32_t);
ExceptionOr<void> releasePointerCapture(int32_t);
bool hasPointerCapture(int32_t);
#if ENABLE(POINTER_LOCK)
WEBCORE_EXPORT void requestPointerLock();
#endif
bool isSpellCheckingEnabled() const;
inline bool hasID() const;
inline bool hasClass() const;
inline bool hasName() const;
inline const SpaceSplitString& classNames() const;
IntPoint savedLayerScrollPosition() const;
void setSavedLayerScrollPosition(const IntPoint&);
bool dispatchMouseEvent(const PlatformMouseEvent&, const AtomString& eventType, int clickCount = 0, Element* relatedTarget = nullptr, IsSyntheticClick isSyntethicClick = IsSyntheticClick::No);
bool dispatchWheelEvent(const PlatformWheelEvent&, OptionSet<EventHandling>&, EventIsCancelable = EventIsCancelable::Yes);
bool dispatchKeyEvent(const PlatformKeyboardEvent&);
bool dispatchSimulatedClick(Event* underlyingEvent, SimulatedClickMouseEventOptions = SendNoEvents, SimulatedClickVisualOptions = ShowPressedLook);
// FIXME: Consider changing signature to accept Element* because all callers perform copyRef().
void dispatchFocusInEventIfNeeded(RefPtr<Element>&& oldFocusedElement);
void dispatchFocusOutEventIfNeeded(RefPtr<Element>&& newFocusedElement);
virtual void dispatchFocusEvent(RefPtr<Element>&& oldFocusedElement, const FocusOptions&);
virtual void dispatchBlurEvent(RefPtr<Element>&& newFocusedElement);
void dispatchWebKitImageReadyEventForTesting();
WEBCORE_EXPORT bool dispatchMouseForceWillBegin();
void enqueueSecurityPolicyViolationEvent(SecurityPolicyViolationEventInit&&);
virtual void willRecalcStyle(Style::Change);
virtual void didRecalcStyle(Style::Change);
virtual void willResetComputedStyle();
virtual void willAttachRenderers();
virtual void didAttachRenderers();
virtual void willDetachRenderers();
virtual void didDetachRenderers();
virtual std::optional<Style::ElementStyle> resolveCustomStyle(const Style::ResolutionContext&, const RenderStyle* shadowHostStyle);
LayoutRect absoluteEventHandlerBounds(bool& includesFixedPositionElements) override;
const RenderStyle* existingComputedStyle() const;
WEBCORE_EXPORT const RenderStyle* renderOrDisplayContentsStyle(PseudoId = PseudoId::None) const;
void clearBeforePseudoElement();
void clearAfterPseudoElement();
void resetComputedStyle();
void resetStyleRelations();
void resetChildStyleRelations();
void resetAllDescendantStyleRelations();
void clearHoverAndActiveStatusBeforeDetachingRenderer();
WEBCORE_EXPORT URL absoluteLinkURL() const;
#if ENABLE(TOUCH_EVENTS)
bool allowsDoubleTapGesture() const override;
#endif
Style::Resolver& styleResolver();
Style::ElementStyle resolveStyle(const Style::ResolutionContext&);
// Invalidates the style of a single element. Style is resolved lazily.
// Descendant elements are resolved as needed, for example if an inherited property changes.
// This should be called whenever an element changes in a manner that can affect its style.
void invalidateStyle();
// As above but also call RenderElement::setStyle with StyleDifference::RecompositeLayer flag for
// the element even when the style doesn't change. This is mostly needed by the animation code.
WEBCORE_EXPORT void invalidateStyleAndLayerComposition();
// Invalidate the element and all its descendants. This is used when there is some sort of change
// in the tree that may affect the style of any of the descendants and we don't know how to optimize
// the case to limit the scope. This is expensive and should be avoided.
void invalidateStyleForSubtree();
// Invalidates renderers for the element and all its descendants causing them to be torn down
// and rebuild during style resolution. Style is also recomputed. This is used in code dealing with
// custom (not style based) renderers. This is expensive and should be avoided.
// Elements newly added to the tree are also in this state.
void invalidateStyleAndRenderersForSubtree();
void invalidateStyleInternal();
void invalidateStyleForSubtreeInternal();
void invalidateForQueryContainerSizeChange();
void invalidateForResumingQueryContainerResolution();
bool needsUpdateQueryContainerDependentStyle() const;
void clearNeedsUpdateQueryContainerDependentStyle();
void invalidateEventListenerRegions();
bool hasDisplayContents() const;
void storeDisplayContentsStyle(std::unique_ptr<RenderStyle>);
using ContainerNode::setAttributeEventListener;
void setAttributeEventListener(const AtomString& eventType, const QualifiedName& attributeName, const AtomString& value);
IntersectionObserverData& ensureIntersectionObserverData();
IntersectionObserverData* intersectionObserverDataIfExists();
ResizeObserverData& ensureResizeObserverData();
ResizeObserverData* resizeObserverData();
Element* findAnchorElementForLink(String& outAnchorName);
ExceptionOr<Ref<WebAnimation>> animate(JSC::JSGlobalObject&, JSC::Strong<JSC::JSObject>&&, std::optional<std::variant<double, KeyframeAnimationOptions>>&&);
Vector<RefPtr<WebAnimation>> getAnimations(std::optional<GetAnimationsOptions>);
WEBCORE_EXPORT ElementIdentifier identifier() const;
WEBCORE_EXPORT static Element* fromIdentifier(ElementIdentifier);
String description() const override;
String debugDescription() const override;
bool hasDuplicateAttribute() const { return m_hasDuplicateAttribute; };
void setHasDuplicateAttribute(bool hasDuplicateAttribute) { m_hasDuplicateAttribute = hasDuplicateAttribute; };
virtual void updateUserAgentShadowTree() { }
StylePropertyMapReadOnly* computedStyleMap();
ExplicitlySetAttrElementsMap& explicitlySetAttrElementsMap();
ExplicitlySetAttrElementsMap* explicitlySetAttrElementsMapIfExists() const;
bool displayContentsChanged() const { return m_displayContentsChanged; }
void setDisplayContentsChanged(bool changed = true) { m_displayContentsChanged = changed; }
protected:
Element(const QualifiedName&, Document&, ConstructionType);
InsertedIntoAncestorResult insertedIntoAncestor(InsertionType, ContainerNode&) override;
void removedFromAncestor(RemovalType, ContainerNode&) override;
void childrenChanged(const ChildChange&) override;
void removeAllEventListeners() final;
virtual void parserDidSetAttributes();
void setTabIndexExplicitly(std::optional<int>);
void classAttributeChanged(const AtomString& newClassString);
void partAttributeChanged(const AtomString& newValue);
void addShadowRoot(Ref<ShadowRoot>&&);
static ExceptionOr<void> mergeWithNextTextNode(Text&);
StylePropertyMap* attributeStyleMap();
void setAttributeStyleMap(Ref<StylePropertyMap>&&);
void updateLabel(TreeScope&, const AtomString& oldForAttributeValue, const AtomString& newForAttributeValue);
private:
Frame* documentFrameWithNonNullView() const;
bool isTextNode() const;
bool isUserActionElementInActiveChain() const;
bool isUserActionElementActive() const;
bool isUserActionElementFocused() const;
bool isUserActionElementHovered() const;
bool isUserActionElementDragged() const;
bool isUserActionElementHasFocusVisible() const;
bool isUserActionElementHasFocusWithin() const;
bool isNonceable() const;
virtual void didAddUserAgentShadowRoot(ShadowRoot&) { }
void didAddAttribute(const QualifiedName&, const AtomString&);
void willModifyAttribute(const QualifiedName&, const AtomString& oldValue, const AtomString& newValue);
void didModifyAttribute(const QualifiedName&, const AtomString& oldValue, const AtomString& newValue);
void didRemoveAttribute(const QualifiedName&, const AtomString& oldValue);
void synchronizeAttribute(const QualifiedName&) const;
void synchronizeAttribute(const AtomString& localName) const;
inline const Attribute* getAttributeInternal(const QualifiedName&) const;
inline const Attribute* getAttributeInternal(const AtomString& qualifiedName) const;
void updateName(const AtomString& oldName, const AtomString& newName);
void updateNameForTreeScope(TreeScope&, const AtomString& oldName, const AtomString& newName);
void updateNameForDocument(HTMLDocument&, const AtomString& oldName, const AtomString& newName);
enum class NotifyObservers { No, Yes };
void updateId(const AtomString& oldId, const AtomString& newId, NotifyObservers = NotifyObservers::Yes);
void updateIdForTreeScope(TreeScope&, const AtomString& oldId, const AtomString& newId, NotifyObservers = NotifyObservers::Yes);
enum HTMLDocumentNamedItemMapsUpdatingCondition { AlwaysUpdateHTMLDocumentNamedItemMaps, UpdateHTMLDocumentNamedItemMapsOnlyIfDiffersFromNameAttribute };
void updateIdForDocument(HTMLDocument&, const AtomString& oldId, const AtomString& newId, HTMLDocumentNamedItemMapsUpdatingCondition);
ExceptionOr<Node*> insertAdjacent(const String& where, Ref<Node>&& newChild);
void scrollByUnits(int units, ScrollGranularity);
NodeType nodeType() const final;
bool childTypeAllowed(NodeType) const final;
enum SynchronizationOfLazyAttribute { NotInSynchronizationOfLazyAttribute, InSynchronizationOfLazyAttribute };
void setAttributeInternal(unsigned index, const QualifiedName&, const AtomString& value, SynchronizationOfLazyAttribute);
void addAttributeInternal(const QualifiedName&, const AtomString& value, SynchronizationOfLazyAttribute);
void removeAttributeInternal(unsigned index, SynchronizationOfLazyAttribute);
void setSavedLayerScrollPositionSlow(const IntPoint&);
void clearBeforePseudoElementSlow();
void clearAfterPseudoElementSlow();
LayoutRect absoluteEventBounds(bool& boundsIncludeAllDescendantElements, bool& includesFixedPositionElements);
LayoutRect absoluteEventBoundsOfElementAndDescendants(bool& includesFixedPositionElements);
void disconnectFromIntersectionObservers();
void disconnectFromResizeObservers();
// The cloneNode function is private so that non-virtual cloneElementWith/WithoutChildren are used instead.
Ref<Node> cloneNodeInternal(Document&, CloningOperation) override;
virtual Ref<Element> cloneElementWithoutAttributesAndChildren(Document&);
void removeShadowRoot();
enum class ResolveComputedStyleMode { Normal, RenderedOnly };
const RenderStyle* resolveComputedStyle(ResolveComputedStyleMode = ResolveComputedStyleMode::Normal);
const RenderStyle& resolvePseudoElementStyle(PseudoId);
unsigned rareDataChildIndex() const;
void createUniqueElementData();
inline ElementRareData* elementRareData() const;
ElementRareData& ensureElementRareData();
ElementAnimationRareData* animationRareData(PseudoId) const;
ElementAnimationRareData& ensureAnimationRareData(PseudoId);
virtual int defaultTabIndex() const;
void detachAllAttrNodesFromElement();
void detachAttrNodeFromElementWithValue(Attr*, const AtomString& value);
// Anyone thinking of using this should call document instead of ownerDocument.
void ownerDocument() const = delete;
void attachAttributeNodeIfNeeded(Attr&);
#if ASSERT_ENABLED
WEBCORE_EXPORT bool fastAttributeLookupAllowed(const QualifiedName&) const;
#endif
QualifiedName m_tagName;
RefPtr<ElementData> m_elementData;
// FIXME: these flags should move somewhere else and then we should have a static assert on
// Element size and ideally stick to that size.
bool m_hasDuplicateAttribute { false };
bool m_displayContentsChanged { false };
};
inline void Element::setSavedLayerScrollPosition(const IntPoint& position)
{
if (position.isZero() && !hasRareData())
return;
setSavedLayerScrollPositionSlow(position);
}
inline void Element::clearBeforePseudoElement()
{
if (hasRareData())
clearBeforePseudoElementSlow();
}
inline void Element::clearAfterPseudoElement()
{
if (hasRareData())
clearAfterPseudoElementSlow();
}
void invalidateForSiblingCombinators(Element* sibling);
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::Element)
static bool isType(const WebCore::Node& node) { return node.isElementNode(); }
static bool isType(const WebCore::EventTarget& target) { return is<WebCore::Node>(target) && isType(downcast<WebCore::Node>(target)); }
SPECIALIZE_TYPE_TRAITS_END()