blob: 9e52d3315539945465703214117d7b206a3f2aa3 [file] [log] [blame]
/*
* 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 "Document.h"
#include "ElementData.h"
#include "HTMLNames.h"
#include "KeyframeAnimationOptions.h"
#include "ScrollToOptions.h"
#include "ScrollTypes.h"
#include "ShadowRootMode.h"
#include "SimulatedClickOptions.h"
#include "StyleChange.h"
namespace WebCore {
class CustomElementReactionQueue;
class DatasetDOMStringMap;
class DOMRect;
class DOMRectList;
class DOMTokenList;
class ElementRareData;
class HTMLDocument;
class IntSize;
class JSCustomElementInterface;
class KeyboardEvent;
class Locale;
class PlatformKeyboardEvent;
class PlatformMouseEvent;
class PlatformWheelEvent;
class PseudoElement;
class RenderTreePosition;
class WebAnimation;
struct ElementStyle;
enum SpellcheckAttributeState {
SpellcheckAttributeTrue,
SpellcheckAttributeFalse,
SpellcheckAttributeDefault
};
enum class SelectionRevealMode {
Reveal,
RevealUpToMainFrame, // Scroll overflow and iframes, but not the main frame.
DoNotReveal
};
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 AtomicString& getAttribute(const QualifiedName&) const;
WEBCORE_EXPORT void setAttribute(const QualifiedName&, const AtomicString& value);
WEBCORE_EXPORT void setAttributeWithoutSynchronization(const QualifiedName&, const AtomicString& value);
void setSynchronizedLazyAttribute(const QualifiedName&, const AtomicString& 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);
// 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.
bool hasAttributeWithoutSynchronization(const QualifiedName&) const;
const AtomicString& attributeWithoutSynchronization(const QualifiedName&) const;
#ifndef NDEBUG
WEBCORE_EXPORT bool fastAttributeLookupAllowed(const QualifiedName&) const;
#endif
#ifdef 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 AtomicString& name) const;
WEBCORE_EXPORT bool hasAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) const;
WEBCORE_EXPORT const AtomicString& getAttribute(const AtomicString& name) const;
WEBCORE_EXPORT const AtomicString& getAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) const;
WEBCORE_EXPORT ExceptionOr<void> setAttribute(const AtomicString& name, const AtomicString& value);
static ExceptionOr<QualifiedName> parseAttributeName(const AtomicString& namespaceURI, const AtomicString& qualifiedName);
WEBCORE_EXPORT ExceptionOr<void> setAttributeNS(const AtomicString& namespaceURI, const AtomicString& qualifiedName, const AtomicString& value);
const AtomicString& getIdAttribute() const;
void setIdAttribute(const AtomicString&);
const AtomicString& 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.
const AtomicString& idForStyleResolution() const;
// Internal methods that assume the existence of attribute storage, one should use hasAttributes()
// before calling them.
AttributeIteratorAccessor attributesIterator() const { return elementData()->attributesIterator(); }
unsigned attributeCount() const;
const Attribute& attributeAt(unsigned index) const;
const Attribute* findAttributeByName(const QualifiedName&) const;
unsigned findAttributeIndexByName(const QualifiedName& name) const { return elementData()->findAttributeIndexByName(name); }
unsigned findAttributeIndexByName(const AtomicString& name, bool shouldIgnoreAttributeCase) const { return elementData()->findAttributeIndexByName(name, shouldIgnoreAttributeCase); }
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);
void scrollTo(double x, double y);
WEBCORE_EXPORT void scrollByLines(int lines);
WEBCORE_EXPORT void scrollByPages(int pages);
WEBCORE_EXPORT double offsetLeft();
WEBCORE_EXPORT double offsetTop();
WEBCORE_EXPORT double offsetWidth();
WEBCORE_EXPORT double 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* bindingsOffsetParent();
const Element* rootElement() const;
Element* offsetParent();
WEBCORE_EXPORT double clientLeft();
WEBCORE_EXPORT double clientTop();
WEBCORE_EXPORT double clientWidth();
WEBCORE_EXPORT double clientHeight();
virtual int scrollLeft();
virtual int scrollTop();
virtual void setScrollLeft(int);
virtual void setScrollTop(int);
virtual int scrollWidth();
virtual int scrollHeight();
WEBCORE_EXPORT IntRect boundsInRootViewSpace();
WEBCORE_EXPORT FloatRect boundingClientRect();
WEBCORE_EXPORT Ref<DOMRectList> getClientRects();
Ref<DOMRect> getBoundingClientRect();
// Returns the absolute bounding box translated into client coordinates.
WEBCORE_EXPORT IntRect clientRect() const;
// Returns the absolute bounding box translated into screen coordinates.
WEBCORE_EXPORT IntRect screenRect() const;
WEBCORE_EXPORT bool removeAttribute(const AtomicString& name);
WEBCORE_EXPORT bool removeAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName);
Ref<Attr> detachAttribute(unsigned index);
WEBCORE_EXPORT RefPtr<Attr> getAttributeNode(const AtomicString& name);
WEBCORE_EXPORT RefPtr<Attr> getAttributeNodeNS(const AtomicString& namespaceURI, const AtomicString& 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 AtomicString& 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 // ENABLE(JIT)
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); }
bool hasTagName(const SVGQualifiedName& tagName) const { return ContainerNode::hasTagName(tagName); }
// A fast function for checking the local name against another atomic string.
bool hasLocalName(const AtomicString& other) const { return m_tagName.localName() == other; }
const AtomicString& localName() const final { return m_tagName.localName(); }
const AtomicString& prefix() const final { return m_tagName.prefix(); }
const AtomicString& namespaceURI() const final { return m_tagName.namespaceURI(); }
ExceptionOr<void> setPrefix(const AtomicString&) 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
};
// This method is called whenever an attribute is added, changed or removed.
virtual void attributeChanged(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue, AttributeModificationReason = ModifiedDirectly);
virtual void parseAttribute(const QualifiedName&, const AtomicString&) { }
// Only called by the parser immediately after element construction.
void parserSetAttributes(const Vector<Attribute>&);
bool isEventHandlerAttribute(const Attribute&) const;
bool isJavaScriptURLAttribute(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); }
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&);
WEBCORE_EXPORT ShadowRoot* shadowRoot() const;
ShadowRoot* shadowRootForBindings(JSC::ExecState&) const;
struct ShadowRootInit {
ShadowRootMode mode;
};
ExceptionOr<ShadowRoot&> attachShadow(const ShadowRootInit&);
RefPtr<ShadowRoot> userAgentShadowRoot() const;
WEBCORE_EXPORT ShadowRoot& ensureUserAgentShadowRoot();
void setIsDefinedCustomElement(JSCustomElementInterface&);
void setIsFailedCustomElement(JSCustomElementInterface&);
void setIsCustomElementUpgradeCandidate();
void enqueueToUpgrade(JSCustomElementInterface&);
CustomElementReactionQueue* reactionQueue() const;
// FIXME: this should not be virtual, do not override this.
virtual const AtomicString& shadowPseudoId() const;
bool inActiveChain() const { return isUserActionElement() && isUserActionElementInActiveChain(); }
bool active() const { return isUserActionElement() && isUserActionElementActive(); }
bool hovered() const { return isUserActionElement() && isUserActionElementHovered(); }
bool focused() const { return isUserActionElement() && isUserActionElementFocused(); }
bool hasFocusWithin() const { return getFlag(HasFocusWithin); };
virtual void setActive(bool flag = true, bool pause = false);
virtual void setHovered(bool flag = true);
virtual void setFocus(bool flag);
void setHasFocusWithin(bool flag);
bool tabIndexSetExplicitly() const;
virtual bool supportsFocus() const;
virtual bool isFocusable() const;
virtual bool isKeyboardFocusable(KeyboardEvent*) const;
virtual bool isMouseFocusable() const;
virtual bool shouldUseInputMethod();
virtual int tabIndex() const;
WEBCORE_EXPORT void setTabIndex(int);
virtual RefPtr<Element> focusDelegate();
ExceptionOr<void> insertAdjacentHTML(const String& where, const String& html, std::optional<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, const String& text);
const RenderStyle* computedStyle(PseudoId = NOPSEUDO) override;
bool needsStyleInvalidation() const;
// Methods for indicating the style is affected by dynamic updates (e.g., children changing, our position changing in our sibling list, etc.)
bool styleAffectedByActive() const { return hasRareData() && rareDataStyleAffectedByActive(); }
bool styleAffectedByEmpty() const { return hasRareData() && rareDataStyleAffectedByEmpty(); }
bool styleAffectedByFocusWithin() const { return hasRareData() && rareDataStyleAffectedByFocusWithin(); }
bool descendantsAffectedByPreviousSibling() const { return getFlag(DescendantsAffectedByPreviousSiblingFlag); }
bool childrenAffectedByHover() const { return getFlag(ChildrenAffectedByHoverRulesFlag); }
bool childrenAffectedByDrag() const { return hasRareData() && rareDataChildrenAffectedByDrag(); }
bool childrenAffectedByFirstChildRules() const { return getFlag(ChildrenAffectedByFirstChildRulesFlag); }
bool childrenAffectedByLastChildRules() const { return getFlag(ChildrenAffectedByLastChildRulesFlag); }
bool childrenAffectedByForwardPositionalRules() const { return hasRareData() && rareDataChildrenAffectedByForwardPositionalRules(); }
bool descendantsAffectedByForwardPositionalRules() const { return hasRareData() && rareDataDescendantsAffectedByForwardPositionalRules(); }
bool childrenAffectedByBackwardPositionalRules() const { return hasRareData() && rareDataChildrenAffectedByBackwardPositionalRules(); }
bool descendantsAffectedByBackwardPositionalRules() const { return hasRareData() && rareDataDescendantsAffectedByBackwardPositionalRules(); }
bool childrenAffectedByPropertyBasedBackwardPositionalRules() const { return hasRareData() && rareDataChildrenAffectedByPropertyBasedBackwardPositionalRules(); }
bool affectsNextSiblingElementStyle() const { return getFlag(AffectsNextSiblingElementStyle); }
unsigned childIndex() const { return hasRareData() ? rareDataChildIndex() : 0; }
bool hasFlagsSetDuringStylingOfChildren() const;
void setStyleAffectedByEmpty();
void setStyleAffectedByFocusWithin();
void setDescendantsAffectedByPreviousSibling() const { return setFlag(DescendantsAffectedByPreviousSiblingFlag); }
void setChildrenAffectedByHover() { setFlag(ChildrenAffectedByHoverRulesFlag); }
void setStyleAffectedByActive();
void setChildrenAffectedByDrag();
void setChildrenAffectedByFirstChildRules() { setFlag(ChildrenAffectedByFirstChildRulesFlag); }
void setChildrenAffectedByLastChildRules() { setFlag(ChildrenAffectedByLastChildRulesFlag); }
void setChildrenAffectedByForwardPositionalRules();
void setDescendantsAffectedByForwardPositionalRules();
void setChildrenAffectedByBackwardPositionalRules();
void setDescendantsAffectedByBackwardPositionalRules();
void setChildrenAffectedByPropertyBasedBackwardPositionalRules();
void setAffectsNextSiblingElementStyle() { setFlag(AffectsNextSiblingElementStyle); }
void setStyleIsAffectedByPreviousSibling() { setFlag(StyleIsAffectedByPreviousSibling); }
void setChildIndex(unsigned);
WEBCORE_EXPORT AtomicString computeInheritedLanguage() const;
Locale& locale() const;
virtual void accessKeyAction(bool /*sendToAnyEvent*/) { }
virtual bool isURLAttribute(const Attribute&) const { return false; }
virtual bool attributeContainsURL(const Attribute& attribute) const { return isURLAttribute(attribute); }
virtual String completeURLsInAttributeValue(const URL& base, const Attribute&) const;
virtual bool isHTMLContentAttribute(const Attribute&) const { return false; }
WEBCORE_EXPORT URL getURLAttribute(const QualifiedName&) const;
URL getNonEmptyURLAttribute(const QualifiedName&) const;
virtual const AtomicString& imageSourceURL() const;
virtual String target() const { return String(); }
static AXTextStateChangeIntent defaultFocusTextStateChangeIntent() { return AXTextStateChangeIntent(AXTextStateChangeTypeSelectionMove, AXTextSelection { AXTextSelectionDirectionDiscontiguous, AXTextSelectionGranularityUnknown, true }); }
virtual void focus(bool restorePreviousSelection = true, FocusDirection = FocusDirectionNone);
virtual RefPtr<Element> focusAppearanceUpdateTarget();
virtual void updateFocusAppearance(SelectionRestorationMode, SelectionRevealMode = SelectionRevealMode::Reveal);
virtual void blur();
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 AtomicString& pseudo() const;
WEBCORE_EXPORT void setPseudo(const AtomicString&);
LayoutSize minimumSizeForResizing() const;
void setMinimumSizeForResizing(const LayoutSize&);
// Use Document::registerForDocumentActivationCallbacks() to subscribe to these
virtual void prepareForDocumentSuspension() { }
virtual void resumeFromDocumentSuspension() { }
// Use Document::registerForMediaVolumeCallbacks() to subscribe to this
virtual void mediaVolumeDidChange() { }
// Use Document::registerForPrivateBrowsingStateChangedCallbacks() to subscribe to this.
virtual void privateBrowsingStateDidChange() { }
virtual void willBecomeFullscreenElement();
virtual void ancestorWillEnterFullscreen() { }
virtual void didBecomeFullscreenElement() { }
virtual void willStopBeingFullscreenElement() { }
#if ENABLE(VIDEO_TRACK)
virtual void captionPreferencesChanged() { }
#endif
bool isFinishedParsingChildren() const { return isParsingChildrenFinished(); }
void finishParsingChildren() override;
void beginParsingChildren() final;
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();
DatasetDOMStringMap& dataset();
#if ENABLE(VIDEO)
virtual bool isMediaElement() const { return false; }
#endif
virtual bool isFormControlElement() const { return false; }
virtual bool isSpinButtonElement() const { return false; }
virtual bool isTextFormControlElement() const { return false; }
virtual bool isTextField() 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 isFrameElementBase() const { return false; }
virtual bool isUploadButton() const { return false; }
virtual bool isSliderContainerElement() 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;
bool hasPendingResources() const;
void setHasPendingResources();
void clearHasPendingResources();
virtual void buildPendingResource() { };
bool hasCSSAnimation() const;
void setHasCSSAnimation();
void clearHasCSSAnimation();
#if ENABLE(FULLSCREEN_API)
WEBCORE_EXPORT bool containsFullScreenElement() const;
void setContainsFullScreenElement(bool);
void setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(bool);
WEBCORE_EXPORT void webkitRequestFullscreen();
#endif
#if ENABLE(POINTER_LOCK)
WEBCORE_EXPORT void requestPointerLock();
#endif
bool isSpellCheckingEnabled() const;
bool hasID() const;
bool hasClass() const;
bool hasName() const;
const SpaceSplitString& classNames() const;
IntPoint savedLayerScrollPosition() const;
void setSavedLayerScrollPosition(const IntPoint&);
bool dispatchMouseEvent(const PlatformMouseEvent&, const AtomicString& eventType, int clickCount = 0, Element* relatedTarget = nullptr);
bool dispatchWheelEvent(const PlatformWheelEvent&);
bool dispatchKeyEvent(const PlatformKeyboardEvent&);
void dispatchSimulatedClick(Event* underlyingEvent, SimulatedClickMouseEventOptions = SendNoEvents, SimulatedClickVisualOptions = ShowPressedLook);
void dispatchFocusInEvent(const AtomicString& eventType, RefPtr<Element>&& oldFocusedElement);
void dispatchFocusOutEvent(const AtomicString& eventType, RefPtr<Element>&& newFocusedElement);
virtual void dispatchFocusEvent(RefPtr<Element>&& oldFocusedElement, FocusDirection);
virtual void dispatchBlurEvent(RefPtr<Element>&& newFocusedElement);
void dispatchWebKitImageReadyEventForTesting();
WEBCORE_EXPORT bool dispatchMouseForceWillBegin();
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<ElementStyle> resolveCustomStyle(const RenderStyle& parentStyle, const RenderStyle* shadowHostStyle);
LayoutRect absoluteEventHandlerBounds(bool& includesFixedPositionElements) override;
const RenderStyle* existingComputedStyle() const;
void setBeforePseudoElement(Ref<PseudoElement>&&);
void setAfterPseudoElement(Ref<PseudoElement>&&);
void clearBeforePseudoElement();
void clearAfterPseudoElement();
void resetComputedStyle();
void resetStyleRelations();
void clearHoverAndActiveStatusBeforeDetachingRenderer();
WEBCORE_EXPORT URL absoluteLinkURL() const;
#if ENABLE(TOUCH_EVENTS)
bool allowsDoubleTapGesture() const override;
#endif
StyleResolver& styleResolver();
ElementStyle resolveStyle(const RenderStyle* parentStyle);
// 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 StyleDifferenceRecompositeLayer 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();
bool hasDisplayContents() const;
void storeDisplayContentsStyle(std::unique_ptr<RenderStyle>);
using ContainerNode::setAttributeEventListener;
void setAttributeEventListener(const AtomicString& eventType, const QualifiedName& attributeName, const AtomicString& value);
Element* findAnchorElementForLink(String& outAnchorName);
ExceptionOr<Ref<WebAnimation>> animate(JSC::ExecState&, JSC::Strong<JSC::JSObject>&&, std::optional<Variant<double, KeyframeAnimationOptions>>&&);
Vector<RefPtr<WebAnimation>> getAnimations();
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 clearTabIndexExplicitlyIfNeeded();
void setTabIndexExplicitly(int);
// classAttributeChanged() exists to share code between
// parseAttribute (called via setAttribute()) and
// svgAttributeChanged (called when element.className.baseValue is set)
void classAttributeChanged(const AtomicString& newClassString);
void addShadowRoot(Ref<ShadowRoot>&&);
static ExceptionOr<void> mergeWithNextTextNode(Text&);
private:
bool isTextNode() const;
bool isUserActionElementInActiveChain() const;
bool isUserActionElementActive() const;
bool isUserActionElementFocused() const;
bool isUserActionElementHovered() const;
virtual void didAddUserAgentShadowRoot(ShadowRoot&) { }
// FIXME: Remove the need for Attr to call willModifyAttribute/didModifyAttribute.
friend class Attr;
enum SynchronizationOfLazyAttribute { NotInSynchronizationOfLazyAttribute = 0, InSynchronizationOfLazyAttribute };
void didAddAttribute(const QualifiedName&, const AtomicString&);
void willModifyAttribute(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue);
void didModifyAttribute(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue);
void didRemoveAttribute(const QualifiedName&, const AtomicString& oldValue);
void synchronizeAttribute(const QualifiedName&) const;
void synchronizeAttribute(const AtomicString& localName) const;
void updateName(const AtomicString& oldName, const AtomicString& newName);
void updateNameForTreeScope(TreeScope&, const AtomicString& oldName, const AtomicString& newName);
void updateNameForDocument(HTMLDocument&, const AtomicString& oldName, const AtomicString& newName);
enum class NotifyObservers { No, Yes };
void updateId(const AtomicString& oldId, const AtomicString& newId, NotifyObservers = NotifyObservers::Yes);
void updateIdForTreeScope(TreeScope&, const AtomicString& oldId, const AtomicString& newId, NotifyObservers = NotifyObservers::Yes);
enum HTMLDocumentNamedItemMapsUpdatingCondition { AlwaysUpdateHTMLDocumentNamedItemMaps, UpdateHTMLDocumentNamedItemMapsOnlyIfDiffersFromNameAttribute };
void updateIdForDocument(HTMLDocument&, const AtomicString& oldId, const AtomicString& newId, HTMLDocumentNamedItemMapsUpdatingCondition);
void updateLabel(TreeScope&, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue);
ExceptionOr<Node*> insertAdjacent(const String& where, Ref<Node>&& newChild);
void scrollByUnits(int units, ScrollGranularity);
NodeType nodeType() const final;
bool childTypeAllowed(NodeType) const final;
void setAttributeInternal(unsigned index, const QualifiedName&, const AtomicString& value, SynchronizationOfLazyAttribute);
void addAttributeInternal(const QualifiedName&, const AtomicString& value, SynchronizationOfLazyAttribute);
void removeAttributeInternal(unsigned index, SynchronizationOfLazyAttribute);
LayoutRect absoluteEventBounds(bool& boundsIncludeAllDescendantElements, bool& includesFixedPositionElements);
LayoutRect absoluteEventBoundsOfElementAndDescendants(bool& includesFixedPositionElements);
#if ENABLE(TREE_DEBUGGING)
void formatForDebugger(char* buffer, unsigned length) const override;
#endif
// 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();
const RenderStyle& resolveComputedStyle();
const RenderStyle& resolvePseudoElementStyle(PseudoId);
bool rareDataStyleAffectedByEmpty() const;
bool rareDataStyleAffectedByFocusWithin() const;
bool rareDataChildrenAffectedByHover() const;
bool rareDataStyleAffectedByActive() const;
bool rareDataChildrenAffectedByDrag() const;
bool rareDataChildrenAffectedByLastChildRules() const;
bool rareDataChildrenAffectedByForwardPositionalRules() const;
bool rareDataDescendantsAffectedByForwardPositionalRules() const;
bool rareDataChildrenAffectedByBackwardPositionalRules() const;
bool rareDataDescendantsAffectedByBackwardPositionalRules() const;
bool rareDataChildrenAffectedByPropertyBasedBackwardPositionalRules() const;
unsigned rareDataChildIndex() const;
SpellcheckAttributeState spellcheckAttributeState() const;
void createUniqueElementData();
ElementRareData* elementRareData() const;
ElementRareData& ensureElementRareData();
void detachAllAttrNodesFromElement();
void detachAttrNodeFromElementWithValue(Attr*, const AtomicString& value);
// Anyone thinking of using this should call document instead of ownerDocument.
void ownerDocument() const = delete;
void attachAttributeNodeIfNeeded(Attr&);
QualifiedName m_tagName;
RefPtr<ElementData> m_elementData;
};
inline bool Node::hasAttributes() const
{
return is<Element>(*this) && downcast<Element>(*this).hasAttributes();
}
inline NamedNodeMap* Node::attributes() const
{
return is<Element>(*this) ? &downcast<Element>(*this).attributes() : nullptr;
}
inline Element* Node::parentElement() const
{
ContainerNode* parent = parentNode();
return is<Element>(parent) ? downcast<Element>(parent) : nullptr;
}
inline const Element* Element::rootElement() const
{
if (isConnected())
return document().documentElement();
const Element* highest = this;
while (highest->parentElement())
highest = highest->parentElement();
return highest;
}
inline bool Element::hasAttributeWithoutSynchronization(const QualifiedName& name) const
{
ASSERT(fastAttributeLookupAllowed(name));
return elementData() && findAttributeByName(name);
}
inline const AtomicString& Element::attributeWithoutSynchronization(const QualifiedName& name) const
{
if (elementData()) {
if (const Attribute* attribute = findAttributeByName(name))
return attribute->value();
}
return nullAtom();
}
inline bool Element::hasAttributesWithoutUpdate() const
{
return elementData() && !elementData()->isEmpty();
}
inline const AtomicString& Element::idForStyleResolution() const
{
return hasID() ? elementData()->idForStyleResolution() : nullAtom();
}
inline const AtomicString& Element::getIdAttribute() const
{
if (hasID())
return elementData()->findAttributeByName(HTMLNames::idAttr)->value();
return nullAtom();
}
inline const AtomicString& Element::getNameAttribute() const
{
if (hasName())
return elementData()->findAttributeByName(HTMLNames::nameAttr)->value();
return nullAtom();
}
inline void Element::setIdAttribute(const AtomicString& value)
{
setAttributeWithoutSynchronization(HTMLNames::idAttr, value);
}
inline const SpaceSplitString& Element::classNames() const
{
ASSERT(hasClass());
ASSERT(elementData());
return elementData()->classNames();
}
inline unsigned Element::attributeCount() const
{
ASSERT(elementData());
return elementData()->length();
}
inline const Attribute& Element::attributeAt(unsigned index) const
{
ASSERT(elementData());
return elementData()->attributeAt(index);
}
inline const Attribute* Element::findAttributeByName(const QualifiedName& name) const
{
ASSERT(elementData());
return elementData()->findAttributeByName(name);
}
inline bool Element::hasID() const
{
return elementData() && elementData()->hasID();
}
inline bool Element::hasClass() const
{
return elementData() && elementData()->hasClass();
}
inline bool Element::hasName() const
{
return elementData() && elementData()->hasName();
}
inline UniqueElementData& Element::ensureUniqueElementData()
{
if (!elementData() || !elementData()->isUnique())
createUniqueElementData();
return static_cast<UniqueElementData&>(*m_elementData);
}
inline bool shouldIgnoreAttributeCase(const Element& element)
{
return element.isHTMLElement() && element.document().isHTMLDocument();
}
inline void Element::setHasFocusWithin(bool flag)
{
if (hasFocusWithin() == flag)
return;
setFlag(flag, HasFocusWithin);
if (styleAffectedByFocusWithin())
invalidateStyleForSubtree();
}
} // 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()