2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2001 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
6 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
28 #include "EventTarget.h"
30 #include "LayoutTypes.h"
31 #include "RenderStyleConstants.h"
32 #include "ScriptWrappable.h"
33 #include "TreeShared.h"
34 #include <wtf/Forward.h>
35 #include <wtf/ListHashSet.h>
50 class DynamicNodeList;
54 class EventDispatchMediator;
58 class HTMLInputElement;
66 class NodeRenderingContext;
67 class PlatformKeyboardEvent;
68 class PlatformMouseEvent;
69 class PlatformWheelEvent;
71 class RegisteredEventListener;
74 class RenderBoxModelObject;
83 typedef int ExceptionCode;
85 const int nodeStyleChangeShift = 25;
87 // SyntheticStyleChange means that we need to go through the entire style change logic even though
88 // no style property has actually changed. It is used to restructure the tree when, for instance,
89 // RenderLayers are created or destroyed due to animation changes.
90 enum StyleChangeType {
92 InlineStyleChange = 1 << nodeStyleChangeShift,
93 FullStyleChange = 2 << nodeStyleChangeShift,
94 SyntheticStyleChange = 3 << nodeStyleChangeShift
97 class Node : public EventTarget, public TreeShared<ContainerNode>, public ScriptWrappable {
98 friend class Document;
99 friend class TreeScope;
106 CDATA_SECTION_NODE = 4,
107 ENTITY_REFERENCE_NODE = 5,
109 PROCESSING_INSTRUCTION_NODE = 7,
112 DOCUMENT_TYPE_NODE = 10,
113 DOCUMENT_FRAGMENT_NODE = 11,
115 XPATH_NAMESPACE_NODE = 13,
116 SHADOW_ROOT_NODE = 14
118 enum DocumentPosition {
119 DOCUMENT_POSITION_EQUIVALENT = 0x00,
120 DOCUMENT_POSITION_DISCONNECTED = 0x01,
121 DOCUMENT_POSITION_PRECEDING = 0x02,
122 DOCUMENT_POSITION_FOLLOWING = 0x04,
123 DOCUMENT_POSITION_CONTAINS = 0x08,
124 DOCUMENT_POSITION_CONTAINED_BY = 0x10,
125 DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20,
128 static bool isSupported(const String& feature, const String& version);
130 static void startIgnoringLeaks();
131 static void stopIgnoringLeaks();
133 static void dumpStatistics();
135 enum StyleChange { NoChange, NoInherit, Inherit, Detach, Force };
136 static StyleChange diff(const RenderStyle*, const RenderStyle*);
140 // DOM methods & attributes for Node
142 bool hasTagName(const QualifiedName&) const;
143 bool hasLocalName(const AtomicString&) const;
144 virtual String nodeName() const = 0;
145 virtual String nodeValue() const;
146 virtual void setNodeValue(const String&, ExceptionCode&);
147 virtual NodeType nodeType() const = 0;
148 ContainerNode* parentNode() const;
149 Element* parentElement() const;
150 Node* previousSibling() const { return m_previous; }
151 Node* nextSibling() const { return m_next; }
152 PassRefPtr<NodeList> childNodes();
153 Node* firstChild() const;
154 Node* lastChild() const;
155 bool hasAttributes() const;
156 NamedNodeMap* attributes() const;
158 virtual KURL baseURI() const;
160 void getSubresourceURLs(ListHashSet<KURL>&) const;
162 // These should all actually return a node, but this is only important for language bindings,
163 // which will already know and hold a ref on the right node to return. Returning bool allows
164 // these methods to be more efficient since they don't need to return a ref
165 bool insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode&, bool shouldLazyAttach = false);
166 bool replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode&, bool shouldLazyAttach = false);
167 bool removeChild(Node* child, ExceptionCode&);
168 bool appendChild(PassRefPtr<Node> newChild, ExceptionCode&, bool shouldLazyAttach = false);
170 void remove(ExceptionCode&);
171 bool hasChildNodes() const { return firstChild(); }
172 virtual PassRefPtr<Node> cloneNode(bool deep) = 0;
173 const AtomicString& localName() const { return virtualLocalName(); }
174 const AtomicString& namespaceURI() const { return virtualNamespaceURI(); }
175 const AtomicString& prefix() const { return virtualPrefix(); }
176 virtual void setPrefix(const AtomicString&, ExceptionCode&);
179 bool isSameNode(Node* other) const { return this == other; }
180 bool isEqualNode(Node*) const;
181 bool isDefaultNamespace(const AtomicString& namespaceURI) const;
182 String lookupPrefix(const AtomicString& namespaceURI) const;
183 String lookupNamespaceURI(const String& prefix) const;
184 String lookupNamespacePrefix(const AtomicString& namespaceURI, const Element* originalElement) const;
186 String textContent(bool convertBRsToNewlines = false) const;
187 void setTextContent(const String&, ExceptionCode&);
189 Node* lastDescendant() const;
190 Node* firstDescendant() const;
192 // Other methods (not part of DOM)
194 bool isElementNode() const { return getFlag(IsElementFlag); }
195 bool isContainerNode() const { return getFlag(IsContainerFlag); }
196 bool isTextNode() const { return getFlag(IsTextFlag); }
198 bool isHTMLElement() const { return getFlag(IsHTMLFlag); }
200 bool isSVGElement() const { return getFlag(IsSVGFlag); }
201 virtual bool isSVGShadowRoot() const { return false; }
203 SVGUseElement* svgShadowHost() const;
206 virtual bool isMediaControlElement() const { return false; }
207 virtual bool isMediaControls() const { return false; }
208 bool isStyledElement() const { return getFlag(IsStyledElementFlag); }
209 virtual bool isFrameOwnerElement() const { return false; }
210 virtual bool isAttributeNode() const { return false; }
211 bool isCommentNode() const { return getFlag(IsCommentFlag); }
212 virtual bool isCharacterDataNode() const { return false; }
213 bool isDocumentNode() const;
214 bool isShadowRoot() const { return getFlag(IsShadowRootFlag); }
215 virtual bool isContentElement() const { return false; }
216 virtual bool canHaveLightChildRendererWithShadow() const { return false; }
218 Node* shadowAncestorNode() const;
219 // Returns 0, a ShadowRoot, or a legacy shadow root.
220 Node* shadowTreeRootNode() const;
221 // Returns 0, a child of ShadowRoot, or a legacy shadow root.
222 Node* nonBoundaryShadowTreeRootNode();
223 bool isInShadowTree();
224 // Node's parent, shadow tree host, or SVG use.
225 ContainerNode* parentOrHostNode() const;
226 Element* parentOrHostElement() const;
227 // Use when it's guaranteed to that shadowHost is 0 and svgShadowHost is 0.
228 ContainerNode* parentNodeGuaranteedHostFree() const;
229 // Returns the parent node, but 0 if the parent node is a ShadowRoot.
230 ContainerNode* nonShadowBoundaryParentNode() const;
232 Element* shadowHost() const;
233 void setShadowHost(Element*);
235 bool selfOrAncestorHasDirAutoAttribute() const { return getFlag(SelfOrAncestorHasDirAutoFlag); }
236 void setSelfOrAncestorHasDirAutoAttribute(bool flag) { setFlag(flag, SelfOrAncestorHasDirAutoFlag); }
238 // Returns the enclosing event parent node (or self) that, when clicked, would trigger a navigation.
239 Node* enclosingLinkEventParentOrSelf();
241 bool isBlockFlow() const;
242 bool isBlockFlowOrBlockTable() const;
244 // These low-level calls give the caller responsibility for maintaining the integrity of the tree.
245 void setPreviousSibling(Node* previous) { m_previous = previous; }
246 void setNextSibling(Node* next) { m_next = next; }
248 virtual bool canContainRangeEndPoint() const { return false; }
250 // FIXME: These two functions belong in editing -- "atomic node" is an editing concept.
251 Node* previousNodeConsideringAtomicNodes() const;
252 Node* nextNodeConsideringAtomicNodes() const;
254 // Returns the next leaf node or 0 if there are no more.
255 // Delivers leaf nodes as if the whole DOM tree were a linear chain of its leaf nodes.
256 // Uses an editing-specific concept of what a leaf node is, and should probably be moved
257 // out of the Node class into an editing-specific source file.
258 Node* nextLeafNode() const;
260 // Returns the previous leaf node or 0 if there are no more.
261 // Delivers leaf nodes as if the whole DOM tree were a linear chain of its leaf nodes.
262 // Uses an editing-specific concept of what a leaf node is, and should probably be moved
263 // out of the Node class into an editing-specific source file.
264 Node* previousLeafNode() const;
266 // enclosingBlockFlowElement() is deprecated. Use enclosingBlock instead.
267 Element* enclosingBlockFlowElement() const;
269 Element* rootEditableElement() const;
271 bool inSameContainingBlockFlowElement(Node*);
273 // Called by the parser when this element's close tag is reached,
274 // signaling that all child tags have been parsed and added.
275 // This is needed for <applet> and <object> elements, which can't lay themselves out
276 // until they know all of their nested <param>s. [Radar 3603191, 4040848].
277 // Also used for script elements and some SVG elements for similar purposes,
278 // but making parsing a special case in this respect should be avoided if possible.
279 virtual void finishParsingChildren() { }
280 virtual void beginParsingChildren() { }
282 // Called on the focused node right before dispatching an unload event.
283 virtual void aboutToUnload() { }
285 // For <link> and <style> elements.
286 virtual bool sheetLoaded() { return true; }
287 virtual void startLoadingDynamicSheet() { ASSERT_NOT_REACHED(); }
289 bool hasID() const { return getFlag(HasIDFlag); }
290 bool hasClass() const { return getFlag(HasClassFlag); }
291 bool active() const { return getFlag(IsActiveFlag); }
292 bool inActiveChain() const { return getFlag(InActiveChainFlag); }
293 bool inDetach() const { return getFlag(InDetachFlag); }
294 bool hovered() const { return getFlag(IsHoveredFlag); }
295 bool focused() const { return hasRareData() ? rareDataFocused() : false; }
296 bool attached() const { return getFlag(IsAttachedFlag); }
297 void setAttached() { setFlag(IsAttachedFlag); }
298 bool needsStyleRecalc() const { return styleChangeType() != NoStyleChange; }
299 StyleChangeType styleChangeType() const { return static_cast<StyleChangeType>(m_nodeFlags & StyleChangeMask); }
300 bool childNeedsStyleRecalc() const { return getFlag(ChildNeedsStyleRecalcFlag); }
301 bool isLink() const { return getFlag(IsLinkFlag); }
303 void setHasID(bool f) { setFlag(f, HasIDFlag); }
304 void setHasClass(bool f) { setFlag(f, HasClassFlag); }
305 void setChildNeedsStyleRecalc() { setFlag(ChildNeedsStyleRecalcFlag); }
306 void clearChildNeedsStyleRecalc() { clearFlag(ChildNeedsStyleRecalcFlag); }
307 void setInDocument() { setFlag(InDocumentFlag); }
308 void clearInDocument() { clearFlag(InDocumentFlag); }
310 void setInActiveChain() { setFlag(InActiveChainFlag); }
311 void clearInActiveChain() { clearFlag(InActiveChainFlag); }
313 void setNeedsStyleRecalc(StyleChangeType changeType = FullStyleChange);
314 void clearNeedsStyleRecalc() { m_nodeFlags &= ~StyleChangeMask; }
315 virtual void scheduleSetNeedsStyleRecalc(StyleChangeType changeType = FullStyleChange) { setNeedsStyleRecalc(changeType); }
317 void setIsLink(bool f) { setFlag(f, IsLinkFlag); }
318 void setIsLink() { setFlag(IsLinkFlag); }
319 void clearIsLink() { clearFlag(IsLinkFlag); }
321 enum ShouldSetAttached {
325 void lazyAttach(ShouldSetAttached = SetAttached);
327 virtual void setFocus(bool = true);
328 virtual void setActive(bool f = true, bool /*pause*/ = false) { setFlag(f, IsActiveFlag); }
329 virtual void setHovered(bool f = true) { setFlag(f, IsHoveredFlag); }
331 virtual short tabIndex() const;
333 // Whether this kind of node can receive focus by default. Most nodes are
334 // not focusable but some elements, such as form controls and links, are.
335 virtual bool supportsFocus() const;
336 // Whether the node can actually be focused.
337 virtual bool isFocusable() const;
338 virtual bool isKeyboardFocusable(KeyboardEvent*) const;
339 virtual bool isMouseFocusable() const;
340 virtual Node* focusDelegate();
342 bool isContentEditable();
344 bool rendererIsEditable() const { return rendererIsEditable(Editable); }
345 bool rendererIsRichlyEditable() const { return rendererIsEditable(RichlyEditable); }
346 virtual bool shouldUseInputMethod();
347 virtual LayoutRect getRect() const;
348 LayoutRect renderRect(bool* isReplaced);
350 // Returns true if the node has a non-empty bounding box in layout.
351 // This does not 100% guarantee the user can see it, but is pretty close.
352 // Note: This method only works properly after layout has occurred.
353 bool hasNonEmptyBoundingBox() const;
355 unsigned nodeIndex() const;
357 // Returns the DOM ownerDocument attribute. This method never returns NULL, except in the case
358 // of (1) a Document node or (2) a DocumentType node that is not used with any Document yet.
359 Document* ownerDocument() const;
361 // Returns the document associated with this node. This method never returns NULL, except in the case
362 // of a DocumentType node that is not used with any Document yet. A Document node returns itself.
363 Document* document() const
366 // FIXME: below ASSERT is useful, but prevents the use of document() in the constructor or destructor
367 // due to the virtual function call to nodeType().
368 ASSERT(m_document || (nodeType() == DOCUMENT_TYPE_NODE && !inDocument()));
372 TreeScope* treeScope() const;
374 // Used by the basic DOM methods (e.g., appendChild()).
375 void setTreeScopeRecursively(TreeScope*, bool includeRoot = true);
377 // Returns true if this node is associated with a document and is in its associated document's
378 // node tree, false otherwise.
379 bool inDocument() const
381 ASSERT(m_document || !getFlag(InDocumentFlag));
382 return getFlag(InDocumentFlag);
385 bool isReadOnlyNode() const { return nodeType() == ENTITY_REFERENCE_NODE; }
386 virtual bool childTypeAllowed(NodeType) const { return false; }
387 unsigned childNodeCount() const;
388 Node* childNode(unsigned index) const;
390 // Does a pre-order traversal of the tree to find the next node after this one.
391 // This uses the same order that tags appear in the source file. If the stayWithin
392 // argument is non-null, the traversal will stop once the specified node is reached.
393 // This can be used to restrict traversal to a particular sub-tree.
394 Node* traverseNextNode(const Node* stayWithin = 0) const;
396 // Like traverseNextNode, but skips children and starts with the next sibling.
397 Node* traverseNextSibling(const Node* stayWithin = 0) const;
399 // Does a reverse pre-order traversal to find the node that comes before the current one in document order
400 Node* traversePreviousNode(const Node* stayWithin = 0) const;
402 // Like traverseNextNode, but visits parents after their children.
403 Node* traverseNextNodePostOrder() const;
405 // Like traversePreviousNode, but visits parents before their children.
406 Node* traversePreviousNodePostOrder(const Node* stayWithin = 0) const;
407 Node* traversePreviousSiblingPostOrder(const Node* stayWithin = 0) const;
409 void checkSetPrefix(const AtomicString& prefix, ExceptionCode&);
410 bool isDescendantOf(const Node*) const;
411 bool contains(const Node*) const;
412 bool containsIncludingShadowDOM(Node*);
414 // This method is used to do strict error-checking when adding children via
415 // the public DOM API (e.g., appendChild()).
416 void checkAddChild(Node* newChild, ExceptionCode&); // Error-checking when adding via the DOM API
418 void checkReplaceChild(Node* newChild, Node* oldChild, ExceptionCode&);
419 virtual bool canReplaceChild(Node* newChild, Node* oldChild);
421 // Used to determine whether range offsets use characters or node indices.
422 virtual bool offsetInCharacters() const;
423 // Number of DOM 16-bit units contained in node. Note that rendered text length can be different - e.g. because of
424 // css-transform:capitalize breaking up precomposed characters and ligatures.
425 virtual int maxCharacterOffset() const;
427 // Whether or not a selection can be started in this object
428 virtual bool canStartSelection() const;
430 // Getting points into and out of screen space
431 FloatPoint convertToPage(const FloatPoint&) const;
432 FloatPoint convertFromPage(const FloatPoint&) const;
434 // -----------------------------------------------------------------------------
435 // Integration with rendering tree
437 RenderObject* renderer() const { return m_renderer; }
438 void setRenderer(RenderObject* renderer) { m_renderer = renderer; }
440 // Use these two methods with caution.
441 RenderBox* renderBox() const;
442 RenderBoxModelObject* renderBoxModelObject() const;
444 // Attaches this node to the rendering tree. This calculates the style to be applied to the node and creates an
445 // appropriate RenderObject which will be inserted into the tree (except when the style has display: none). This
446 // makes the node visible in the FrameView.
447 virtual void attach();
449 // Detaches the node from the rendering tree, making it invisible in the rendered view. This method will remove
450 // the node's rendering object from the rendering tree and delete it.
451 virtual void detach();
454 void reattachIfAttached();
456 virtual void willRemove();
457 void createRendererIfNeeded();
458 virtual bool rendererIsNeeded(const NodeRenderingContext&);
459 virtual bool childShouldCreateRenderer(Node*) const { return true; }
460 virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
461 ContainerNode* parentNodeForRenderingAndStyle();
463 // Wrapper for nodes that don't have a renderer, but still cache the style (like HTMLOptionElement).
464 RenderStyle* renderStyle() const;
465 virtual void setRenderStyle(PassRefPtr<RenderStyle>);
467 RenderStyle* computedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) { return virtualComputedStyle(pseudoElementSpecifier); }
469 // -----------------------------------------------------------------------------
470 // Notification of document structure changes
472 // Notifies the node that it has been inserted into the document. This is called during document parsing, and also
473 // when a node is added through the DOM methods insertBefore(), appendChild() or replaceChild(). Note that this only
474 // happens when the node becomes part of the document tree, i.e. only when the document is actually an ancestor of
475 // the node. The call happens _after_ the node has been added to the tree.
477 // This is similar to the DOMNodeInsertedIntoDocument DOM event, but does not require the overhead of event
479 virtual void insertedIntoDocument();
481 // Notifies the node that it is no longer part of the document tree, i.e. when the document is no longer an ancestor
484 // This is similar to the DOMNodeRemovedFromDocument DOM event, but does not require the overhead of event
485 // dispatching, and is called _after_ the node is removed from the tree.
486 virtual void removedFromDocument();
488 // These functions are called whenever you are connected or disconnected from a tree. That tree may be the main
489 // document tree, or it could be another disconnected tree. Override these functions to do any work that depends
490 // on connectedness to some ancestor (e.g., an ancestor <form> for example).
491 virtual void insertedIntoTree(bool /*deep*/) { }
492 virtual void removedFromTree(bool /*deep*/) { }
494 // Notifies the node that it's list of children have changed (either by adding or removing child nodes), or a child
495 // node that is of the type CDATA_SECTION_NODE, TEXT_NODE or COMMENT_NODE has changed its value.
496 virtual void childrenChanged(bool /*changedByParser*/ = false, Node* /*beforeChange*/ = 0, Node* /*afterChange*/ = 0, int /*childCountDelta*/ = 0) { }
499 virtual void formatForDebugger(char* buffer, unsigned length) const;
501 void showNode(const char* prefix = "") const;
502 void showTreeForThis() const;
503 void showTreeAndMark(const Node* markedNode1, const char* markedLabel1, const Node* markedNode2 = 0, const char* markedLabel2 = 0) const;
504 void showTreeForThisAcrossFrame() const;
507 void removeNodeListCacheIfPossible();
508 void registerDynamicNodeList(DynamicNodeList*);
509 void unregisterDynamicNodeList(DynamicNodeList*);
510 void notifyNodeListsChildrenChanged();
511 void notifyLocalNodeListsChildrenChanged();
512 void notifyNodeListsAttributeChanged();
513 void notifyLocalNodeListsAttributeChanged();
514 void notifyLocalNodeListsLabelChanged();
515 void removeCachedClassNodeList(ClassNodeList*, const String&);
516 void removeCachedNameNodeList(NameNodeList*, const String&);
517 void removeCachedTagNodeList(TagNodeList*, const AtomicString&);
518 void removeCachedTagNodeList(TagNodeList*, const QualifiedName&);
519 void removeCachedLabelsNodeList(DynamicNodeList*);
521 PassRefPtr<NodeList> getElementsByTagName(const AtomicString&);
522 PassRefPtr<NodeList> getElementsByTagNameNS(const AtomicString& namespaceURI, const AtomicString& localName);
523 PassRefPtr<NodeList> getElementsByName(const String& elementName);
524 PassRefPtr<NodeList> getElementsByClassName(const String& classNames);
526 PassRefPtr<Element> querySelector(const String& selectors, ExceptionCode&);
527 PassRefPtr<NodeList> querySelectorAll(const String& selectors, ExceptionCode&);
529 unsigned short compareDocumentPosition(Node*);
531 virtual Node* toNode() { return this; }
533 virtual HTMLInputElement* toInputElement();
535 virtual ScriptExecutionContext* scriptExecutionContext() const;
537 virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture);
538 virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture);
540 // Handlers to do/undo actions on the target node before an event is dispatched to it and after the event
541 // has been dispatched. The data pointer is handed back by the preDispatch and passed to postDispatch.
542 virtual void* preDispatchEventHandler(Event*) { return 0; }
543 virtual void postDispatchEventHandler(Event*, void* /*dataFromPreDispatch*/) { }
545 using EventTarget::dispatchEvent;
546 bool dispatchEvent(PassRefPtr<Event>);
547 void dispatchScopedEvent(PassRefPtr<Event>);
548 void dispatchScopedEventDispatchMediator(PassRefPtr<EventDispatchMediator>);
550 virtual void handleLocalEvents(Event*);
552 void dispatchSubtreeModifiedEvent();
553 void dispatchDOMActivateEvent(int detail, PassRefPtr<Event> underlyingEvent);
554 void dispatchFocusInEvent(const AtomicString& eventType, PassRefPtr<Node> oldFocusedNode);
555 void dispatchFocusOutEvent(const AtomicString& eventType, PassRefPtr<Node> newFocusedNode);
557 bool dispatchKeyEvent(const PlatformKeyboardEvent&);
558 bool dispatchWheelEvent(const PlatformWheelEvent&);
559 bool dispatchMouseEvent(const PlatformMouseEvent&, const AtomicString& eventType, int clickCount = 0, Node* relatedTarget = 0);
560 void dispatchSimulatedClick(PassRefPtr<Event> underlyingEvent, bool sendMouseEvents = false, bool showPressedLook = true);
562 virtual void dispatchFocusEvent(PassRefPtr<Node> oldFocusedNode);
563 virtual void willBlur();
564 virtual void dispatchBlurEvent(PassRefPtr<Node> newFocusedNode);
565 virtual void dispatchChangeEvent();
566 virtual void dispatchInputEvent();
568 // Perform the default action for an event.
569 virtual void defaultEventHandler(Event*);
571 // Used for disabled form elements; if true, prevents mouse events from being dispatched
572 // to event listeners, and prevents DOMActivate events from being sent at all.
573 virtual bool disabled() const;
575 using TreeShared<ContainerNode>::ref;
576 using TreeShared<ContainerNode>::deref;
578 virtual EventTargetData* eventTargetData();
579 virtual EventTargetData* ensureEventTargetData();
584 IsCommentFlag = 1 << 1,
585 IsContainerFlag = 1 << 2,
586 IsElementFlag = 1 << 3,
587 IsStyledElementFlag = 1 << 4,
591 HasClassFlag = 1 << 8,
592 IsAttachedFlag = 1 << 9,
593 ChildNeedsStyleRecalcFlag = 1 << 10,
594 InDocumentFlag = 1 << 11,
595 IsLinkFlag = 1 << 12,
596 IsActiveFlag = 1 << 13,
597 IsHoveredFlag = 1 << 14,
598 InActiveChainFlag = 1 << 15,
599 InDetachFlag = 1 << 16,
600 HasRareDataFlag = 1 << 17,
601 IsShadowRootFlag = 1 << 18,
603 // These bits are used by derived classes, pulled up here so they can
604 // be stored in the same memory word as the Node bits above.
605 IsParsingChildrenFinishedFlag = 1 << 19, // Element
606 IsStyleAttributeValidFlag = 1 << 20, // StyledElement
607 IsSynchronizingStyleAttributeFlag = 1 << 21, // StyledElement
609 AreSVGAttributesValidFlag = 1 << 22, // Element
610 IsSynchronizingSVGAttributesFlag = 1 << 23, // SVGElement
611 HasSVGRareDataFlag = 1 << 24, // SVGElement
614 StyleChangeMask = 1 << nodeStyleChangeShift | 1 << (nodeStyleChangeShift + 1),
616 SelfOrAncestorHasDirAutoFlag = 1 << 27,
617 HasCustomWillOrDidRecalcStyleFlag = 1 << 28,
618 HasCustomStyleForRendererFlag = 1 << 29,
621 DefaultNodeFlags = IsParsingChildrenFinishedFlag | IsStyleAttributeValidFlag | AreSVGAttributesValidFlag
623 DefaultNodeFlags = IsParsingChildrenFinishedFlag | IsStyleAttributeValidFlag
629 bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
630 void setFlag(bool f, NodeFlags mask) const { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); }
631 void setFlag(NodeFlags mask) const { m_nodeFlags |= mask; }
632 void clearFlag(NodeFlags mask) const { m_nodeFlags &= ~mask; }
635 enum ConstructionType {
636 CreateOther = DefaultNodeFlags,
637 CreateText = DefaultNodeFlags | IsTextFlag,
638 CreateComment = DefaultNodeFlags | IsCommentFlag,
639 CreateContainer = DefaultNodeFlags | IsContainerFlag,
640 CreateElement = CreateContainer | IsElementFlag,
641 CreateStyledElement = CreateElement | IsStyledElementFlag,
642 CreateHTMLElement = CreateStyledElement | IsHTMLFlag,
643 CreateSVGElement = CreateStyledElement | IsSVGFlag,
645 Node(Document*, ConstructionType);
647 virtual void willMoveToNewOwnerDocument();
648 virtual void didMoveToNewOwnerDocument();
650 virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const { }
651 void setTabIndexExplicitly(short);
652 void clearTabIndexExplicitly();
654 bool hasRareData() const { return getFlag(HasRareDataFlag); }
656 NodeRareData* rareData() const;
657 NodeRareData* ensureRareData();
658 void clearRareData();
660 bool hasCustomWillOrDidRecalcStyle() const { return getFlag(HasCustomWillOrDidRecalcStyleFlag); }
661 void setHasCustomWillOrDidRecalcStyle() { setFlag(true, HasCustomWillOrDidRecalcStyleFlag); }
663 bool hasCustomStyleForRenderer() const { return getFlag(HasCustomStyleForRendererFlag); }
664 void setHasCustomStyleForRenderer() { setFlag(true, HasCustomStyleForRendererFlag); }
667 // Do not use this method to change the document of a node until after the node has been
668 // removed from its previous document.
669 void setDocumentRecursively(Document*);
670 void setDocument(Document*);
672 enum EditableLevel { Editable, RichlyEditable };
673 bool rendererIsEditable(EditableLevel) const;
675 void setStyleChange(StyleChangeType);
677 // Used to share code between lazyAttach and setNeedsStyleRecalc.
678 void markAncestorsWithChildNeedsStyleRecalc();
680 virtual void refEventTarget();
681 virtual void derefEventTarget();
683 virtual OwnPtr<NodeRareData> createRareData();
684 bool rareDataFocused() const;
686 virtual RenderStyle* nonRendererRenderStyle() const;
688 virtual const AtomicString& virtualPrefix() const;
689 virtual const AtomicString& virtualLocalName() const;
690 virtual const AtomicString& virtualNamespaceURI() const;
691 virtual RenderStyle* virtualComputedStyle(PseudoId = NOPSEUDO);
693 Element* ancestorElement() const;
695 // Use Node::parentNode as the consistent way of querying a parent node.
696 // This method is made private to ensure a compiler error on call sites that
697 // don't follow this rule.
698 using TreeShared<ContainerNode>::parent;
700 void trackForDebugging();
702 Document* m_document;
705 RenderObject* m_renderer;
706 mutable uint32_t m_nodeFlags;
709 bool isParsingChildrenFinished() const { return getFlag(IsParsingChildrenFinishedFlag); }
710 void setIsParsingChildrenFinished() { setFlag(IsParsingChildrenFinishedFlag); }
711 void clearIsParsingChildrenFinished() { clearFlag(IsParsingChildrenFinishedFlag); }
712 bool isStyleAttributeValid() const { return getFlag(IsStyleAttributeValidFlag); }
713 void setIsStyleAttributeValid(bool f) { setFlag(f, IsStyleAttributeValidFlag); }
714 void setIsStyleAttributeValid() const { setFlag(IsStyleAttributeValidFlag); }
715 void clearIsStyleAttributeValid() { clearFlag(IsStyleAttributeValidFlag); }
716 bool isSynchronizingStyleAttribute() const { return getFlag(IsSynchronizingStyleAttributeFlag); }
717 void setIsSynchronizingStyleAttribute(bool f) { setFlag(f, IsSynchronizingStyleAttributeFlag); }
718 void setIsSynchronizingStyleAttribute() const { setFlag(IsSynchronizingStyleAttributeFlag); }
719 void clearIsSynchronizingStyleAttribute() const { clearFlag(IsSynchronizingStyleAttributeFlag); }
722 bool areSVGAttributesValid() const { return getFlag(AreSVGAttributesValidFlag); }
723 void setAreSVGAttributesValid() const { setFlag(AreSVGAttributesValidFlag); }
724 void clearAreSVGAttributesValid() { clearFlag(AreSVGAttributesValidFlag); }
725 bool isSynchronizingSVGAttributes() const { return getFlag(IsSynchronizingSVGAttributesFlag); }
726 void setIsSynchronizingSVGAttributes() const { setFlag(IsSynchronizingSVGAttributesFlag); }
727 void clearIsSynchronizingSVGAttributes() const { clearFlag(IsSynchronizingSVGAttributesFlag); }
728 bool hasRareSVGData() const { return getFlag(HasSVGRareDataFlag); }
729 void setHasRareSVGData() { setFlag(HasSVGRareDataFlag); }
730 void clearHasRareSVGData() { clearFlag(HasSVGRareDataFlag); }
734 // Used in Node::addSubresourceAttributeURLs() and in addSubresourceStyleURLs()
735 inline void addSubresourceURL(ListHashSet<KURL>& urls, const KURL& url)
741 inline ContainerNode* Node::parentNode() const
743 return getFlag(IsShadowRootFlag) || isSVGShadowRoot() ? 0 : parent();
746 inline ContainerNode* Node::parentOrHostNode() const
751 inline ContainerNode* Node::parentNodeGuaranteedHostFree() const
753 ASSERT(!getFlag(IsShadowRootFlag) && !isSVGShadowRoot());
754 return parentOrHostNode();
757 inline void Node::reattach()
764 inline void Node::reattachIfAttached()
773 // Outside the WebCore namespace for ease of invocation from gdb.
774 void showTree(const WebCore::Node*);