#ifndef Node_h
#define Node_h
#include "EventTarget.h"
#include "URLHash.h"
#include "LayoutRect.h"
#include "MutationObserver.h"
#include "RenderStyleConstants.h"
#include "ScriptWrappable.h"
#include "TreeScope.h"
#include <wtf/Forward.h>
#include <wtf/ListHashSet.h>
#include <wtf/MainThread.h>
#include <wtf/TypeCasts.h>
#define DUMP_NODE_STATISTICS 0
namespace WebCore {
class Attribute;
class ClassNodeList;
class ContainerNode;
class DOMSettableTokenList;
class Document;
class Element;
class Event;
class EventListener;
class FloatPoint;
class Frame;
class HTMLInputElement;
class HTMLQualifiedName;
class IntRect;
class KeyboardEvent;
class MathMLQualifiedName;
class NSResolver;
class NamedNodeMap;
class NameNodeList;
class NodeList;
class NodeListsNodeData;
class NodeRareData;
class QualifiedName;
class RadioNodeList;
class RegisteredEventListener;
class RenderBox;
class RenderBoxModelObject;
class RenderObject;
class RenderStyle;
class SVGQualifiedName;
class ShadowRoot;
class TagNodeList;
#if ENABLE(INDIE_UI)
class UIRequestEvent;
#endif
#if ENABLE(TOUCH_EVENTS) && !PLATFORM(IOS)
class TouchEvent;
#endif
typedef int ExceptionCode;
const int nodeStyleChangeShift = 14;
enum StyleChangeType {
NoStyleChange = 0,
InlineStyleChange = 1 << nodeStyleChangeShift,
FullStyleChange = 2 << nodeStyleChangeShift,
SyntheticStyleChange = 3 << nodeStyleChangeShift,
ReconstructRenderTree = 4 << nodeStyleChangeShift,
};
class NodeRareDataBase {
public:
RenderObject* renderer() const { return m_renderer; }
void setRenderer(RenderObject* renderer) { m_renderer = renderer; }
protected:
NodeRareDataBase(RenderObject* renderer)
: m_renderer(renderer)
{ }
private:
RenderObject* m_renderer;
};
class Node : public EventTarget, public ScriptWrappable {
WTF_MAKE_FAST_ALLOCATED;
friend class Document;
friend class TreeScope;
friend class TreeScopeAdopter;
public:
enum NodeType {
ELEMENT_NODE = 1,
ATTRIBUTE_NODE = 2,
TEXT_NODE = 3,
CDATA_SECTION_NODE = 4,
ENTITY_REFERENCE_NODE = 5,
ENTITY_NODE = 6,
PROCESSING_INSTRUCTION_NODE = 7,
COMMENT_NODE = 8,
DOCUMENT_NODE = 9,
DOCUMENT_TYPE_NODE = 10,
DOCUMENT_FRAGMENT_NODE = 11,
XPATH_NAMESPACE_NODE = 13,
};
enum DeprecatedNodeType {
NOTATION_NODE = 12,
};
enum DocumentPosition {
DOCUMENT_POSITION_EQUIVALENT = 0x00,
DOCUMENT_POSITION_DISCONNECTED = 0x01,
DOCUMENT_POSITION_PRECEDING = 0x02,
DOCUMENT_POSITION_FOLLOWING = 0x04,
DOCUMENT_POSITION_CONTAINS = 0x08,
DOCUMENT_POSITION_CONTAINED_BY = 0x10,
DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20,
};
static bool isSupported(const String& feature, const String& version);
WEBCORE_EXPORT static void startIgnoringLeaks();
WEBCORE_EXPORT static void stopIgnoringLeaks();
static void dumpStatistics();
virtual ~Node();
void willBeDeletedFrom(Document&);
bool hasTagName(const HTMLQualifiedName&) const;
bool hasTagName(const MathMLQualifiedName&) const;
bool hasTagName(const SVGQualifiedName&) const;
virtual String nodeName() const = 0;
virtual String nodeValue() const;
virtual void setNodeValue(const String&, ExceptionCode&);
virtual NodeType nodeType() const = 0;
ContainerNode* parentNode() const;
static ptrdiff_t parentNodeMemoryOffset() { return OBJECT_OFFSETOF(Node, m_parentNode); }
Element* parentElement() const;
Node* previousSibling() const { return m_previous; }
static ptrdiff_t previousSiblingMemoryOffset() { return OBJECT_OFFSETOF(Node, m_previous); }
Node* nextSibling() const { return m_next; }
static ptrdiff_t nextSiblingMemoryOffset() { return OBJECT_OFFSETOF(Node, m_next); }
RefPtr<NodeList> childNodes();
Node* firstChild() const;
Node* lastChild() const;
bool hasAttributes() const;
NamedNodeMap* attributes() const;
Node* pseudoAwareNextSibling() const;
Node* pseudoAwarePreviousSibling() const;
Node* pseudoAwareFirstChild() const;
Node* pseudoAwareLastChild() const;
virtual URL baseURI() const;
void getSubresourceURLs(ListHashSet<URL>&) const;
WEBCORE_EXPORT bool insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode&);
bool replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode&);
WEBCORE_EXPORT bool removeChild(Node* child, ExceptionCode&);
WEBCORE_EXPORT bool appendChild(PassRefPtr<Node> newChild, ExceptionCode&);
WEBCORE_EXPORT void remove(ExceptionCode&);
bool hasChildNodes() const { return firstChild(); }
enum class CloningOperation {
OnlySelf,
SelfWithTemplateContent,
Everything,
};
virtual RefPtr<Node> cloneNodeInternal(Document&, CloningOperation) = 0;
RefPtr<Node> cloneNode(bool deep) { return cloneNodeInternal(document(), deep ? CloningOperation::Everything : CloningOperation::OnlySelf); }
virtual const AtomicString& localName() const;
virtual const AtomicString& namespaceURI() const;
virtual const AtomicString& prefix() const;
virtual void setPrefix(const AtomicString&, ExceptionCode&);
void normalize();
bool isSameNode(Node* other) const { return this == other; }
bool isEqualNode(Node*) const;
bool isDefaultNamespace(const AtomicString& namespaceURI) const;
String lookupPrefix(const AtomicString& namespaceURI) const;
String lookupNamespaceURI(const String& prefix) const;
String lookupNamespacePrefix(const AtomicString& namespaceURI, const Element* originalElement) const;
WEBCORE_EXPORT String textContent(bool convertBRsToNewlines = false) const;
WEBCORE_EXPORT void setTextContent(const String&, ExceptionCode&);
Node* lastDescendant() const;
Node* firstDescendant() const;
Element* previousElementSibling() const;
Element* nextElementSibling() const;
bool isElementNode() const { return getFlag(IsElementFlag); }
bool isContainerNode() const { return getFlag(IsContainerFlag); }
bool isTextNode() const { return getFlag(IsTextFlag); }
bool isHTMLElement() const { return getFlag(IsHTMLFlag); }
bool isSVGElement() const { return getFlag(IsSVGFlag); }
bool isMathMLElement() const { return getFlag(IsMathMLFlag); }
bool isPseudoElement() const { return pseudoId() != NOPSEUDO; }
bool isBeforePseudoElement() const { return pseudoId() == BEFORE; }
bool isAfterPseudoElement() const { return pseudoId() == AFTER; }
PseudoId pseudoId() const { return (isElementNode() && hasCustomStyleResolveCallbacks()) ? customPseudoId() : NOPSEUDO; }
virtual bool isMediaControlElement() const { return false; }
virtual bool isMediaControls() const { return false; }
#if ENABLE(VIDEO_TRACK)
virtual bool isWebVTTElement() const { return false; }
#endif
bool isStyledElement() const { return getFlag(IsStyledElementFlag); }
virtual bool isAttributeNode() const { return false; }
virtual bool isCharacterDataNode() const { return false; }
virtual bool isFrameOwnerElement() const { return false; }
virtual bool isPluginElement() const { return false; }
virtual bool isInsertionPointNode() const { return false; }
#if ENABLE(SERVICE_CONTROLS)
virtual bool isImageControlsRootElement() const { return false; }
virtual bool isImageControlsButtonElement() const { return false; }
#endif
bool isDocumentNode() const;
bool isTreeScope() const;
bool isDocumentFragment() const { return getFlag(IsDocumentFragmentFlag); }
bool isShadowRoot() const { return isDocumentFragment() && isTreeScope(); }
bool isInsertionPoint() const { return getFlag(NeedsNodeRenderingTraversalSlowPathFlag) && isInsertionPointNode(); }
Node* insertionParentForBinding() const;
bool needsNodeRenderingTraversalSlowPath() const;
bool isNamedFlowContentNode() const { return getFlag(IsNamedFlowContentNodeFlag); }
bool hasCustomStyleResolveCallbacks() const { return getFlag(HasCustomStyleResolveCallbacksFlag); }
bool hasSyntheticAttrChildNodes() const { return getFlag(HasSyntheticAttrChildNodesFlag); }
void setHasSyntheticAttrChildNodes(bool flag) { setFlag(flag, HasSyntheticAttrChildNodesFlag); }
WEBCORE_EXPORT Element* shadowHost() const;
WEBCORE_EXPORT Node* deprecatedShadowAncestorNode() const;
ShadowRoot* containingShadowRoot() const;
ShadowRoot* shadowRoot() const;
Node* nonBoundaryShadowTreeRootNode();
ContainerNode* parentOrShadowHostNode() const;
Element* parentOrShadowHostElement() const;
void setParentNode(ContainerNode*);
Node* highestAncestor() const;
ContainerNode* parentNodeGuaranteedHostFree() const;
ContainerNode* nonShadowBoundaryParentNode() const;
bool selfOrAncestorHasDirAutoAttribute() const { return getFlag(SelfOrAncestorHasDirAutoFlag); }
void setSelfOrAncestorHasDirAutoAttribute(bool flag) { setFlag(flag, SelfOrAncestorHasDirAutoFlag); }
Element* enclosingLinkEventParentOrSelf();
void setPreviousSibling(Node* previous) { m_previous = previous; }
void setNextSibling(Node* next) { m_next = next; }
virtual bool canContainRangeEndPoint() const { return false; }
bool isRootEditableElement() const;
WEBCORE_EXPORT Element* rootEditableElement() const;
virtual void finishParsingChildren() { }
virtual void beginParsingChildren() { }
virtual bool sheetLoaded() { return true; }
virtual void notifyLoadedSheetAndAllCriticalSubresources(bool ) { }
virtual void startLoadingDynamicSheet() { ASSERT_NOT_REACHED(); }
bool isUserActionElement() const { return getFlag(IsUserActionElement); }
void setUserActionElement(bool flag) { setFlag(flag, IsUserActionElement); }
bool inRenderedDocument() const;
bool needsStyleRecalc() const { return styleChangeType() != NoStyleChange; }
StyleChangeType styleChangeType() const { return static_cast<StyleChangeType>(m_nodeFlags & StyleChangeMask); }
bool childNeedsStyleRecalc() const { return getFlag(ChildNeedsStyleRecalcFlag); }
bool styleIsAffectedByPreviousSibling() const { return getFlag(StyleIsAffectedByPreviousSibling); }
bool isEditingText() const { return getFlag(IsEditingTextFlag); }
void setChildNeedsStyleRecalc() { setFlag(ChildNeedsStyleRecalcFlag); }
void clearChildNeedsStyleRecalc() { m_nodeFlags &= ~(ChildNeedsStyleRecalcFlag | DirectChildNeedsStyleRecalcFlag); }
WEBCORE_EXPORT void setNeedsStyleRecalc(StyleChangeType = FullStyleChange);
void clearNeedsStyleRecalc() { m_nodeFlags &= ~StyleChangeMask; }
bool isLink() const { return getFlag(IsLinkFlag); }
void setIsLink(bool flag) { setFlag(flag, IsLinkFlag); }
void setIsNamedFlowContentNode() { setFlag(IsNamedFlowContentNodeFlag); }
void clearIsNamedFlowContentNode() { clearFlag(IsNamedFlowContentNodeFlag); }
bool hasEventTargetData() const { return getFlag(HasEventTargetDataFlag); }
void setHasEventTargetData(bool flag) { setFlag(flag, HasEventTargetDataFlag); }
enum UserSelectAllTreatment {
UserSelectAllDoesNotAffectEditability,
UserSelectAllIsAlwaysNonEditable
};
WEBCORE_EXPORT bool isContentEditable();
bool isContentRichlyEditable();
WEBCORE_EXPORT void inspect();
bool hasEditableStyle(UserSelectAllTreatment treatment = UserSelectAllIsAlwaysNonEditable) const
{
return computeEditability(treatment, ShouldUpdateStyle::DoNotUpdate) != Editability::ReadOnly;
}
bool hasRichlyEditableStyle() const
{
return computeEditability(UserSelectAllIsAlwaysNonEditable, ShouldUpdateStyle::DoNotUpdate) == Editability::CanEditRichly;
}
enum class Editability { ReadOnly, CanEditPlainText, CanEditRichly };
enum class ShouldUpdateStyle { Update, DoNotUpdate };
WEBCORE_EXPORT Editability computeEditability(UserSelectAllTreatment, ShouldUpdateStyle) const;
WEBCORE_EXPORT LayoutRect renderRect(bool* isReplaced);
IntRect pixelSnappedRenderRect(bool* isReplaced) { return snappedIntRect(renderRect(isReplaced)); }
WEBCORE_EXPORT unsigned computeNodeIndex() const;
WEBCORE_EXPORT Document* ownerDocument() const;
Document& document() const
{
ASSERT(this);
return treeScope().documentScope();
}
TreeScope& treeScope() const
{
ASSERT(m_treeScope);
return *m_treeScope;
}
static ptrdiff_t treeScopeMemoryOffset() { return OBJECT_OFFSETOF(Node, m_treeScope); }
bool inDocument() const
{
return getFlag(InDocumentFlag);
}
bool isInUserAgentShadowTree() const;
bool isInShadowTree() const { return getFlag(IsInShadowTreeFlag); }
bool isInTreeScope() const { return getFlag(static_cast<NodeFlags>(InDocumentFlag | IsInShadowTreeFlag)); }
bool isReadOnlyNode() const { return nodeType() == ENTITY_REFERENCE_NODE; }
bool isDocumentTypeNode() const { return nodeType() == DOCUMENT_TYPE_NODE; }
virtual bool childTypeAllowed(NodeType) const { return false; }
unsigned countChildNodes() const;
Node* traverseToChildAt(unsigned) const;
void checkSetPrefix(const AtomicString& prefix, ExceptionCode&);
WEBCORE_EXPORT bool isDescendantOf(const Node*) const;
bool isDescendantOrShadowDescendantOf(const Node*) const;
bool contains(const Node*) const;
bool containsIncludingShadowDOM(const Node*) const;
bool containsIncludingHostElements(const Node*) const;
virtual bool offsetInCharacters() const;
virtual int maxCharacterOffset() const;
virtual bool canStartSelection() const;
virtual bool shouldSelectOnMouseDown() { return false; }
FloatPoint convertToPage(const FloatPoint&) const;
FloatPoint convertFromPage(const FloatPoint&) const;
RenderObject* renderer() const { return hasRareData() ? m_data.m_rareData->renderer() : m_data.m_renderer; };
void setRenderer(RenderObject* renderer)
{
if (hasRareData())
m_data.m_rareData->setRenderer(renderer);
else
m_data.m_renderer = renderer;
}
WEBCORE_EXPORT RenderBox* renderBox() const;
RenderBoxModelObject* renderBoxModelObject() const;
RenderStyle* renderStyle() const;
virtual RenderStyle* computedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO);
enum InsertionNotificationRequest {
InsertionDone,
InsertionShouldCallFinishedInsertingSubtree
};
virtual InsertionNotificationRequest insertedInto(ContainerNode& insertionPoint);
virtual void finishedInsertingSubtree() { }
virtual void removedFrom(ContainerNode& insertionPoint);
#if ENABLE(TREE_DEBUGGING)
virtual void formatForDebugger(char* buffer, unsigned length) const;
void showNode(const char* prefix = "") const;
void showTreeForThis() const;
void showNodePathForThis() const;
void showTreeAndMark(const Node* markedNode1, const char* markedLabel1, const Node* markedNode2 = nullptr, const char* markedLabel2 = nullptr) const;
void showTreeForThisAcrossFrame() const;
#endif // ENABLE(TREE_DEBUGGING)
void invalidateNodeListAndCollectionCachesInAncestors(const QualifiedName* attrName = nullptr, Element* attributeOwnerElement = nullptr);
NodeListsNodeData* nodeLists();
void clearNodeLists();
virtual bool willRespondToMouseMoveEvents();
virtual bool willRespondToMouseClickEvents();
virtual bool willRespondToMouseWheelEvents();
WEBCORE_EXPORT unsigned short compareDocumentPosition(Node*);
virtual Node* toNode() override;
virtual HTMLInputElement* toInputElement();
const HTMLInputElement* toInputElement() const { return const_cast<Node*>(this)->toInputElement(); }
virtual EventTargetInterface eventTargetInterface() const override;
virtual ScriptExecutionContext* scriptExecutionContext() const override final;
virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture) override;
virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture) override;
using EventTarget::dispatchEvent;
virtual bool dispatchEvent(PassRefPtr<Event>) override;
void dispatchScopedEvent(PassRefPtr<Event>);
virtual void handleLocalEvents(Event&);
void dispatchSubtreeModifiedEvent();
bool dispatchDOMActivateEvent(int detail, PassRefPtr<Event> underlyingEvent);
#if ENABLE(TOUCH_EVENTS) && !PLATFORM(IOS)
bool dispatchTouchEvent(PassRefPtr<TouchEvent>);
#endif
#if ENABLE(INDIE_UI)
bool dispatchUIRequestEvent(PassRefPtr<UIRequestEvent>);
#endif
bool dispatchBeforeLoadEvent(const String& sourceURL);
virtual void dispatchInputEvent();
virtual void defaultEventHandler(Event*);
void ref();
void deref();
bool hasOneRef() const;
int refCount() const;
#ifndef NDEBUG
bool m_deletionHasBegun { false };
bool m_inRemovedLastRefFunction { false };
bool m_adoptionIsRequired { true };
#endif
virtual EventTargetData* eventTargetData() override final;
virtual EventTargetData& ensureEventTargetData() override final;
void getRegisteredMutationObserversOfType(HashMap<MutationObserver*, MutationRecordDeliveryOptions>&, MutationObserver::MutationType, const QualifiedName* attributeName);
void registerMutationObserver(MutationObserver*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
void unregisterMutationObserver(MutationObserverRegistration*);
void registerTransientMutationObserver(MutationObserverRegistration*);
void unregisterTransientMutationObserver(MutationObserverRegistration*);
void notifyMutationObserversNodeWillDetach();
WEBCORE_EXPORT void textRects(Vector<IntRect>&) const;
unsigned connectedSubframeCount() const;
void incrementConnectedSubframeCount(unsigned amount = 1);
void decrementConnectedSubframeCount(unsigned amount = 1);
void updateAncestorConnectedSubframeCountForRemoval() const;
void updateAncestorConnectedSubframeCountForInsertion() const;
#if ENABLE(CSS_SELECTOR_JIT)
static ptrdiff_t nodeFlagsMemoryOffset() { return OBJECT_OFFSETOF(Node, m_nodeFlags); }
static ptrdiff_t rareDataMemoryOffset() { return OBJECT_OFFSETOF(Node, m_data.m_rareData); }
static int32_t flagIsText() { return IsTextFlag; }
static int32_t flagIsElement() { return IsElementFlag; }
static int32_t flagIsHTML() { return IsHTMLFlag; }
static int32_t flagIsLink() { return IsLinkFlag; }
static int32_t flagHasRareData() { return HasRareDataFlag; }
static int32_t flagIsParsingChildrenFinished() { return IsParsingChildrenFinishedFlag; }
static int32_t flagChildrenAffectedByFirstChildRulesFlag() { return ChildrenAffectedByFirstChildRulesFlag; }
static int32_t flagChildrenAffectedByLastChildRulesFlag() { return ChildrenAffectedByLastChildRulesFlag; }
static int32_t flagAffectsNextSiblingElementStyle() { return AffectsNextSiblingElementStyle; }
static int32_t flagStyleIsAffectedByPreviousSibling() { return StyleIsAffectedByPreviousSibling; }
#endif // ENABLE(CSS_SELECTOR_JIT)
protected:
enum NodeFlags {
IsTextFlag = 1,
IsContainerFlag = 1 << 1,
IsElementFlag = 1 << 2,
IsStyledElementFlag = 1 << 3,
IsHTMLFlag = 1 << 4,
IsSVGFlag = 1 << 5,
ChildNeedsStyleRecalcFlag = 1 << 7,
InDocumentFlag = 1 << 8,
IsLinkFlag = 1 << 9,
IsUserActionElement = 1 << 10,
HasRareDataFlag = 1 << 11,
IsDocumentFragmentFlag = 1 << 12,
IsParsingChildrenFinishedFlag = 1 << 13,
StyleChangeMask = 1 << nodeStyleChangeShift | 1 << (nodeStyleChangeShift + 1) | 1 << (nodeStyleChangeShift + 2),
IsEditingTextFlag = 1 << 17,
IsNamedFlowContentNodeFlag = 1 << 18,
HasSyntheticAttrChildNodesFlag = 1 << 19,
HasCustomStyleResolveCallbacksFlag = 1 << 20,
HasEventTargetDataFlag = 1 << 21,
NeedsNodeRenderingTraversalSlowPathFlag = 1 << 22,
IsInShadowTreeFlag = 1 << 23,
IsMathMLFlag = 1 << 24,
ChildrenAffectedByFirstChildRulesFlag = 1 << 25,
ChildrenAffectedByLastChildRulesFlag = 1 << 26,
ChildrenAffectedByHoverRulesFlag = 1 << 27,
DirectChildNeedsStyleRecalcFlag = 1 << 28,
AffectsNextSiblingElementStyle = 1 << 29,
StyleIsAffectedByPreviousSibling = 1 << 30,
SelfOrAncestorHasDirAutoFlag = 1 << 31,
DefaultNodeFlags = IsParsingChildrenFinishedFlag
};
bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
void setFlag(bool f, NodeFlags mask) const { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); }
void setFlag(NodeFlags mask) const { m_nodeFlags |= mask; }
void clearFlag(NodeFlags mask) const { m_nodeFlags &= ~mask; }
enum ConstructionType {
CreateOther = DefaultNodeFlags,
CreateText = DefaultNodeFlags | IsTextFlag,
CreateContainer = DefaultNodeFlags | IsContainerFlag,
CreateElement = CreateContainer | IsElementFlag,
CreatePseudoElement = CreateElement | InDocumentFlag | NeedsNodeRenderingTraversalSlowPathFlag,
CreateShadowRoot = CreateContainer | IsDocumentFragmentFlag | NeedsNodeRenderingTraversalSlowPathFlag | IsInShadowTreeFlag,
CreateDocumentFragment = CreateContainer | IsDocumentFragmentFlag,
CreateStyledElement = CreateElement | IsStyledElementFlag,
CreateHTMLElement = CreateStyledElement | IsHTMLFlag,
CreateSVGElement = CreateStyledElement | IsSVGFlag | HasCustomStyleResolveCallbacksFlag,
CreateDocument = CreateContainer | InDocumentFlag,
CreateInsertionPoint = CreateHTMLElement | NeedsNodeRenderingTraversalSlowPathFlag,
CreateEditingText = CreateText | IsEditingTextFlag,
CreateMathMLElement = CreateStyledElement | IsMathMLFlag
};
Node(Document&, ConstructionType);
virtual void didMoveToNewDocument(Document* oldDocument);
virtual void addSubresourceAttributeURLs(ListHashSet<URL>&) const { }
bool hasRareData() const { return getFlag(HasRareDataFlag); }
NodeRareData* rareData() const;
NodeRareData& ensureRareData();
void clearRareData();
void clearEventTargetData();
void setHasCustomStyleResolveCallbacks() { setFlag(true, HasCustomStyleResolveCallbacksFlag); }
void setNeedsNodeRenderingTraversalSlowPath(bool flag) { setFlag(flag, NeedsNodeRenderingTraversalSlowPathFlag); }
void setTreeScope(TreeScope& scope) { m_treeScope = &scope; }
void setStyleChange(StyleChangeType changeType) { m_nodeFlags = (m_nodeFlags & ~StyleChangeMask) | changeType; }
void updateAncestorsForStyleRecalc();
private:
virtual PseudoId customPseudoId() const
{
ASSERT(hasCustomStyleResolveCallbacks());
return NOPSEUDO;
}
WEBCORE_EXPORT void removedLastRef();
virtual void refEventTarget() override;
virtual void derefEventTarget() override;
Element* ancestorElement() const;
void trackForDebugging();
void materializeRareData();
Vector<std::unique_ptr<MutationObserverRegistration>>* mutationObserverRegistry();
HashSet<MutationObserverRegistration*>* transientMutationObserverRegistry();
int m_refCount;
mutable uint32_t m_nodeFlags;
ContainerNode* m_parentNode;
TreeScope* m_treeScope;
Node* m_previous;
Node* m_next;
union DataUnion {
DataUnion() : m_renderer(0) { }
RenderObject* m_renderer;
NodeRareDataBase* m_rareData;
} m_data;
protected:
bool isParsingChildrenFinished() const { return getFlag(IsParsingChildrenFinishedFlag); }
void setIsParsingChildrenFinished() { setFlag(IsParsingChildrenFinishedFlag); }
void clearIsParsingChildrenFinished() { clearFlag(IsParsingChildrenFinishedFlag); }
};
#ifndef NDEBUG
inline void adopted(Node* node)
{
if (!node)
return;
ASSERT(!node->m_deletionHasBegun);
ASSERT(!node->m_inRemovedLastRefFunction);
node->m_adoptionIsRequired = false;
}
#endif
ALWAYS_INLINE void Node::ref()
{
ASSERT(isMainThread());
ASSERT(!m_deletionHasBegun);
ASSERT(!m_inRemovedLastRefFunction);
ASSERT(!m_adoptionIsRequired);
++m_refCount;
}
ALWAYS_INLINE void Node::deref()
{
ASSERT(isMainThread());
ASSERT(m_refCount >= 0);
ASSERT(!m_deletionHasBegun);
ASSERT(!m_inRemovedLastRefFunction);
ASSERT(!m_adoptionIsRequired);
if (--m_refCount <= 0 && !parentNode()) {
#ifndef NDEBUG
m_inRemovedLastRefFunction = true;
#endif
removedLastRef();
}
}
ALWAYS_INLINE bool Node::hasOneRef() const
{
ASSERT(!m_deletionHasBegun);
ASSERT(!m_inRemovedLastRefFunction);
return m_refCount == 1;
}
ALWAYS_INLINE int Node::refCount() const
{
return m_refCount;
}
inline void addSubresourceURL(ListHashSet<URL>& urls, const URL& url)
{
if (!url.isNull())
urls.add(url);
}
inline void Node::setParentNode(ContainerNode* parent)
{
ASSERT(isMainThread());
m_parentNode = parent;
}
inline ContainerNode* Node::parentNode() const
{
ASSERT(isMainThreadOrGCThread());
return m_parentNode;
}
inline ContainerNode* Node::parentNodeGuaranteedHostFree() const
{
ASSERT(!isShadowRoot());
return parentNode();
}
}
#if ENABLE(TREE_DEBUGGING)
void showTree(const WebCore::Node*);
void showNodePath(const WebCore::Node*);
#endif
#endif