1 /*
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 Apple Inc. All rights reserved.
6 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
7 *
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.
12 *
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.
17 *
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.
22 *
23 */
24
25 #ifndef Node_h
26 #define Node_h
27
28 #include "DocPtr.h"
29 #include "EventTarget.h"
30 #include "KURLHash.h"
31 #include "PlatformString.h"
32 #include "RegisteredEventListener.h"
33 #include "TreeShared.h"
34 #include "FloatPoint.h"
35 #include <wtf/Assertions.h>
36 #include <wtf/ListHashSet.h>
37 #include <wtf/OwnPtr.h>
38 #include <wtf/PassRefPtr.h>
39
40 namespace WebCore {
41
42 class AtomicString;
43 class Attribute;
44 class ContainerNode;
45 class Document;
46 class DynamicNodeList;
47 class Element;
48 class Event;
49 class EventListener;
50 class Frame;
51 class IntRect;
52 class KeyboardEvent;
53 class NSResolver;
54 class NamedNodeMap;
55 class NodeList;
56 class NodeRareData;
57 class PlatformKeyboardEvent;
58 class PlatformMouseEvent;
59 class PlatformWheelEvent;
60 class QualifiedName;
61 class RegisteredEventListener;
62 class RenderArena;
63 class RenderBox;
64 class RenderBoxModelObject;
65 class RenderObject;
66 class RenderStyle;
67 class StringBuilder;
68
69 typedef int ExceptionCode;
70
71 enum StyleChangeType { NoStyleChange, InlineStyleChange, FullStyleChange, AnimationStyleChange };
72
73 const unsigned short DOCUMENT_POSITION_EQUIVALENT = 0x00;
74 const unsigned short DOCUMENT_POSITION_DISCONNECTED = 0x01;
75 const unsigned short DOCUMENT_POSITION_PRECEDING = 0x02;
76 const unsigned short DOCUMENT_POSITION_FOLLOWING = 0x04;
77 const unsigned short DOCUMENT_POSITION_CONTAINS = 0x08;
78 const unsigned short DOCUMENT_POSITION_CONTAINED_BY = 0x10;
79 const unsigned short DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
80
81 // this class implements nodes, which can have a parent but no children:
82 class Node : public EventTarget, public TreeShared<Node> {
83 friend class Document;
84 public:
85 enum NodeType {
86 ELEMENT_NODE = 1,
87 ATTRIBUTE_NODE = 2,
88 TEXT_NODE = 3,
89 CDATA_SECTION_NODE = 4,
90 ENTITY_REFERENCE_NODE = 5,
91 ENTITY_NODE = 6,
92 PROCESSING_INSTRUCTION_NODE = 7,
93 COMMENT_NODE = 8,
94 DOCUMENT_NODE = 9,
95 DOCUMENT_TYPE_NODE = 10,
96 DOCUMENT_FRAGMENT_NODE = 11,
97 NOTATION_NODE = 12,
98 XPATH_NAMESPACE_NODE = 13
99 };
100
101 static bool isSupported(const String& feature, const String& version);
102
103 static void startIgnoringLeaks();
104 static void stopIgnoringLeaks();
105
106 static void dumpStatistics();
107
108 enum StyleChange { NoChange, NoInherit, Inherit, Detach, Force };
109 static StyleChange diff(const RenderStyle*, const RenderStyle*);
110
111 Node(Document*, bool isElement = false, bool isContainer = false, bool isText = false);
112 virtual ~Node();
113
114 // DOM methods & attributes for Node
115
116 bool hasTagName(const QualifiedName&) const;
117 virtual String nodeName() const = 0;
118 virtual String nodeValue() const;
119 virtual void setNodeValue(const String&, ExceptionCode&);
120 virtual NodeType nodeType() const = 0;
parentNode()121 Node* parentNode() const { return parent(); }
122 Element* parentElement() const;
previousSibling()123 Node* previousSibling() const { return m_previous; }
nextSibling()124 Node* nextSibling() const { return m_next; }
125 PassRefPtr<NodeList> childNodes();
firstChild()126 Node* firstChild() const { return isContainerNode() ? containerFirstChild() : 0; }
lastChild()127 Node* lastChild() const { return isContainerNode() ? containerLastChild() : 0; }
128 bool hasAttributes() const;
129 NamedNodeMap* attributes() const;
130
131 virtual KURL baseURI() const;
132
133 void getSubresourceURLs(ListHashSet<KURL>&) const;
134
135 // These should all actually return a node, but this is only important for language bindings,
136 // which will already know and hold a ref on the right node to return. Returning bool allows
137 // these methods to be more efficient since they don't need to return a ref
138 virtual bool insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode&, bool shouldLazyAttach = false);
139 virtual bool replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode&, bool shouldLazyAttach = false);
140 virtual bool removeChild(Node* child, ExceptionCode&);
141 virtual bool appendChild(PassRefPtr<Node> newChild, ExceptionCode&, bool shouldLazyAttach = false);
142
143 void remove(ExceptionCode&);
hasChildNodes()144 bool hasChildNodes() const { return firstChild(); }
145 virtual PassRefPtr<Node> cloneNode(bool deep) = 0;
localName()146 const AtomicString& localName() const { return virtualLocalName(); }
namespaceURI()147 const AtomicString& namespaceURI() const { return virtualNamespaceURI(); }
prefix()148 const AtomicString& prefix() const { return virtualPrefix(); }
149 virtual void setPrefix(const AtomicString&, ExceptionCode&);
150 void normalize();
151
isSameNode(Node * other)152 bool isSameNode(Node* other) const { return this == other; }
153 bool isEqualNode(Node*) const;
154 bool isDefaultNamespace(const AtomicString& namespaceURI) const;
155 String lookupPrefix(const AtomicString& namespaceURI) const;
156 String lookupNamespaceURI(const String& prefix) const;
157 String lookupNamespacePrefix(const AtomicString& namespaceURI, const Element* originalElement) const;
158
159 String textContent(bool convertBRsToNewlines = false) const;
160 void setTextContent(const String&, ExceptionCode&);
161
162 Node* lastDescendant() const;
163 Node* firstDescendant() const;
164
165 // Other methods (not part of DOM)
166
isElementNode()167 bool isElementNode() const { return m_isElement; }
isContainerNode()168 bool isContainerNode() const { return m_isContainer; }
isTextNode()169 bool isTextNode() const { return m_isText; }
170
isHTMLElement()171 virtual bool isHTMLElement() const { return false; }
172
173 #if ENABLE(SVG)
isSVGElement()174 virtual bool isSVGElement() const { return false; }
175 #else
isSVGElement()176 static bool isSVGElement() { return false; }
177 #endif
178
179 #if ENABLE(WML)
isWMLElement()180 virtual bool isWMLElement() const { return false; }
181 #else
isWMLElement()182 static bool isWMLElement() { return false; }
183 #endif
184
isStyledElement()185 virtual bool isStyledElement() const { return false; }
isFrameOwnerElement()186 virtual bool isFrameOwnerElement() const { return false; }
isAttributeNode()187 virtual bool isAttributeNode() const { return false; }
isCommentNode()188 virtual bool isCommentNode() const { return false; }
isCharacterDataNode()189 virtual bool isCharacterDataNode() const { return false; }
190 bool isDocumentNode() const;
isShadowNode()191 virtual bool isShadowNode() const { return false; }
shadowParentNode()192 virtual Node* shadowParentNode() { return 0; }
193 Node* shadowAncestorNode();
194 Node* shadowTreeRootNode();
195 bool isInShadowTree();
196
197 // The node's parent for the purpose of event capture and bubbling.
198 virtual ContainerNode* eventParentNode();
199
200 bool isBlockFlow() const;
201 bool isBlockFlowOrBlockTable() const;
202
203 // These low-level calls give the caller responsibility for maintaining the integrity of the tree.
setPreviousSibling(Node * previous)204 void setPreviousSibling(Node* previous) { m_previous = previous; }
setNextSibling(Node * next)205 void setNextSibling(Node* next) { m_next = next; }
206
207 // FIXME: These two functions belong in editing -- "atomic node" is an editing concept.
208 Node* previousNodeConsideringAtomicNodes() const;
209 Node* nextNodeConsideringAtomicNodes() const;
210
211 /** (Not part of the official DOM)
212 * Returns the next leaf node.
213 *
214 * Using this function delivers leaf nodes as if the whole DOM tree were a linear chain of its leaf nodes.
215 * @return next leaf node or 0 if there are no more.
216 */
217 Node* nextLeafNode() const;
218
219 /** (Not part of the official DOM)
220 * Returns the previous leaf node.
221 *
222 * Using this function delivers leaf nodes as if the whole DOM tree were a linear chain of its leaf nodes.
223 * @return previous leaf node or 0 if there are no more.
224 */
225 Node* previousLeafNode() const;
226
227 bool isEditableBlock() const;
228
229 // enclosingBlockFlowElement() is deprecated. Use enclosingBlock instead.
230 Element* enclosingBlockFlowElement() const;
231
232 Element* enclosingInlineElement() const;
233 Element* rootEditableElement() const;
234
235 bool inSameContainingBlockFlowElement(Node*);
236
237 // Used by the parser. Checks against the DTD, unlike DOM operations like appendChild().
238 // Also does not dispatch DOM mutation events.
239 // Returns the appropriate container node for future insertions as you parse, or 0 for failure.
240 virtual ContainerNode* addChild(PassRefPtr<Node>);
241
242 // Called by the parser when this element's close tag is reached,
243 // signalling that all child tags have been parsed and added.
244 // This is needed for <applet> and <object> elements, which can't lay themselves out
245 // until they know all of their nested <param>s. [Radar 3603191, 4040848].
246 // Also used for script elements and some SVG elements for similar purposes,
247 // but making parsing a special case in this respect should be avoided if possible.
finishParsingChildren()248 virtual void finishParsingChildren() { }
beginParsingChildren()249 virtual void beginParsingChildren() { }
250
251 // Called by the frame right before dispatching an unloadEvent. [Radar 4532113]
252 // This is needed for HTMLInputElements to tell the frame that it is done editing
253 // (sends textFieldDidEndEditing notification)
aboutToUnload()254 virtual void aboutToUnload() { }
255
256 // For <link> and <style> elements.
sheetLoaded()257 virtual bool sheetLoaded() { return true; }
258
hasID()259 bool hasID() const { return m_hasId; }
hasClass()260 bool hasClass() const { return m_hasClass; }
active()261 bool active() const { return m_active; }
inActiveChain()262 bool inActiveChain() const { return m_inActiveChain; }
inDetach()263 bool inDetach() const { return m_inDetach; }
hovered()264 bool hovered() const { return m_hovered; }
focused()265 bool focused() const { return hasRareData() ? rareDataFocused() : false; }
attached()266 bool attached() const { return m_attached; }
267 void setAttached(bool b = true) { m_attached = b; }
needsStyleRecalc()268 bool needsStyleRecalc() const { return m_styleChange != NoStyleChange; }
styleChangeType()269 StyleChangeType styleChangeType() const { return static_cast<StyleChangeType>(m_styleChange); }
childNeedsStyleRecalc()270 bool childNeedsStyleRecalc() const { return m_childNeedsStyleRecalc; }
isLink()271 bool isLink() const { return m_isLink; }
272 void setHasID(bool b = true) { m_hasId = b; }
273 void setHasClass(bool b = true) { m_hasClass = b; }
274 void setChildNeedsStyleRecalc(bool b = true) { m_childNeedsStyleRecalc = b; }
275 void setInDocument(bool b = true) { m_inDocument = b; }
276 void setInActiveChain(bool b = true) { m_inActiveChain = b; }
277 void setNeedsStyleRecalc(StyleChangeType changeType = FullStyleChange);
278 void setIsLink(bool b = true) { m_isLink = b; }
279
inSubtreeMark()280 bool inSubtreeMark() const { return m_inSubtreeMark; }
281 void setInSubtreeMark(bool b = true) { m_inSubtreeMark = b; }
282
283 void lazyAttach();
284 virtual bool canLazyAttach();
285
286 virtual void setFocus(bool b = true);
287 virtual void setActive(bool b = true, bool /*pause*/ = false) { m_active = b; }
288 virtual void setHovered(bool b = true) { m_hovered = b; }
289
290 virtual short tabIndex() const;
291
292 /**
293 * Whether this node can receive the keyboard focus.
294 */
supportsFocus()295 virtual bool supportsFocus() const { return isFocusable(); }
296 virtual bool isFocusable() const;
297 virtual bool isKeyboardFocusable(KeyboardEvent*) const;
298 virtual bool isMouseFocusable() const;
299
300 virtual bool isContentEditable() const;
301 virtual bool isContentRichlyEditable() const;
302 virtual bool shouldUseInputMethod() const;
303 virtual IntRect getRect() const;
304
305 virtual void recalcStyle(StyleChange = NoChange) { }
306
307 unsigned nodeIndex() const;
308
309 // Returns the DOM ownerDocument attribute. This method never returns NULL, except in the case
310 // of (1) a Document node or (2) a DocumentType node that is not used with any Document yet.
311 virtual Document* ownerDocument() const;
312
313 // Returns the document associated with this node. This method never returns NULL, except in the case
314 // of a DocumentType node that is not used with any Document yet. A Document node returns itself.
document()315 Document* document() const
316 {
317 ASSERT(this);
318 ASSERT(m_document || (nodeType() == DOCUMENT_TYPE_NODE && !inDocument()));
319 return m_document.get();
320 }
321 void setDocument(Document*);
322
323 // Returns true if this node is associated with a document and is in its associated document's
324 // node tree, false otherwise.
inDocument()325 bool inDocument() const
326 {
327 ASSERT(m_document || !m_inDocument);
328 return m_inDocument;
329 }
330
isReadOnlyNode()331 bool isReadOnlyNode() const { return nodeType() == ENTITY_REFERENCE_NODE; }
childTypeAllowed(NodeType)332 virtual bool childTypeAllowed(NodeType) { return false; }
childNodeCount()333 unsigned childNodeCount() const { return isContainerNode() ? containerChildNodeCount() : 0; }
childNode(unsigned index)334 Node* childNode(unsigned index) const { return isContainerNode() ? containerChildNode(index) : 0; }
335
336 /**
337 * Does a pre-order traversal of the tree to find the node next node after this one. This uses the same order that
338 * the tags appear in the source file.
339 *
340 * @param stayWithin If not null, the traversal will stop once the specified node is reached. This can be used to
341 * restrict traversal to a particular sub-tree.
342 *
343 * @return The next node, in document order
344 *
345 * see @ref traversePreviousNode()
346 */
347 Node* traverseNextNode(const Node* stayWithin = 0) const;
348
349 // Like traverseNextNode, but skips children and starts with the next sibling.
350 Node* traverseNextSibling(const Node* stayWithin = 0) const;
351
352 /**
353 * Does a reverse pre-order traversal to find the node that comes before the current one in document order
354 *
355 * see @ref traverseNextNode()
356 */
357 Node* traversePreviousNode(const Node * stayWithin = 0) const;
358
359 // Like traverseNextNode, but visits parents after their children.
360 Node* traverseNextNodePostOrder() const;
361
362 // Like traversePreviousNode, but visits parents before their children.
363 Node* traversePreviousNodePostOrder(const Node *stayWithin = 0) const;
364 Node* traversePreviousSiblingPostOrder(const Node *stayWithin = 0) const;
365
366 /**
367 * Finds previous or next editable leaf node.
368 */
369 Node* previousEditable() const;
370 Node* nextEditable() const;
371
renderer()372 RenderObject* renderer() const { return m_renderer; }
373 RenderObject* nextRenderer();
374 RenderObject* previousRenderer();
setRenderer(RenderObject * renderer)375 void setRenderer(RenderObject* renderer) { m_renderer = renderer; }
376
377 // Use these two methods with caution.
378 RenderBox* renderBox() const;
379 RenderBoxModelObject* renderBoxModelObject() const;
380
381 void checkSetPrefix(const AtomicString& prefix, ExceptionCode&);
382 bool isDescendantOf(const Node*) const;
383 bool contains(const Node*) const;
384
385 // These two methods are mutually exclusive. The former is used to do strict error-checking
386 // when adding children via the public DOM API (e.g., appendChild()). The latter is called only when parsing,
387 // to sanity-check against the DTD for error recovery.
388 void checkAddChild(Node* newChild, ExceptionCode&); // Error-checking when adding via the DOM API
389 virtual bool childAllowed(Node* newChild); // Error-checking during parsing that checks the DTD
390
391 void checkReplaceChild(Node* newChild, Node* oldChild, ExceptionCode&);
392 virtual bool canReplaceChild(Node* newChild, Node* oldChild);
393
394 // Used to determine whether range offsets use characters or node indices.
395 virtual bool offsetInCharacters() const;
396 // Number of DOM 16-bit units contained in node. Note that rendered text length can be different - e.g. because of
397 // css-transform:capitalize breaking up precomposed characters and ligatures.
398 virtual int maxCharacterOffset() const;
399
400 // FIXME: We should try to find a better location for these methods.
canSelectAll()401 virtual bool canSelectAll() const { return false; }
selectAll()402 virtual void selectAll() { }
403
404 // Whether or not a selection can be started in this object
405 virtual bool canStartSelection() const;
406
407 // Getting points into and out of screen space
408 FloatPoint convertToPage(const FloatPoint& p) const;
409 FloatPoint convertFromPage(const FloatPoint& p) const;
410
411 // -----------------------------------------------------------------------------
412 // Integration with rendering tree
413
414 /**
415 * Attaches this node to the rendering tree. This calculates the style to be applied to the node and creates an
416 * appropriate RenderObject which will be inserted into the tree (except when the style has display: none). This
417 * makes the node visible in the FrameView.
418 */
419 virtual void attach();
420
421 /**
422 * Detaches the node from the rendering tree, making it invisible in the rendered view. This method will remove
423 * the node's rendering object from the rendering tree and delete it.
424 */
425 virtual void detach();
426
427 virtual void willRemove();
428 void createRendererIfNeeded();
429 PassRefPtr<RenderStyle> styleForRenderer();
430 virtual bool rendererIsNeeded(RenderStyle*);
431 #if ENABLE(SVG) || ENABLE(XHTMLMP)
childShouldCreateRenderer(Node *)432 virtual bool childShouldCreateRenderer(Node*) const { return true; }
433 #endif
434 virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
435
436 // Wrapper for nodes that don't have a renderer, but still cache the style (like HTMLOptionElement).
437 RenderStyle* renderStyle() const;
438 virtual void setRenderStyle(PassRefPtr<RenderStyle>);
439
440 virtual RenderStyle* computedStyle();
441
442 // -----------------------------------------------------------------------------
443 // Notification of document structure changes
444
445 /**
446 * Notifies the node that it has been inserted into the document. This is called during document parsing, and also
447 * when a node is added through the DOM methods insertBefore(), appendChild() or replaceChild(). Note that this only
448 * happens when the node becomes part of the document tree, i.e. only when the document is actually an ancestor of
449 * the node. The call happens _after_ the node has been added to the tree.
450 *
451 * This is similar to the DOMNodeInsertedIntoDocument DOM event, but does not require the overhead of event
452 * dispatching.
453 */
454 virtual void insertedIntoDocument();
455
456 /**
457 * Notifies the node that it is no longer part of the document tree, i.e. when the document is no longer an ancestor
458 * node.
459 *
460 * This is similar to the DOMNodeRemovedFromDocument DOM event, but does not require the overhead of event
461 * dispatching, and is called _after_ the node is removed from the tree.
462 */
463 virtual void removedFromDocument();
464
465 // These functions are called whenever you are connected or disconnected from a tree. That tree may be the main
466 // document tree, or it could be another disconnected tree. Override these functions to do any work that depends
467 // on connectedness to some ancestor (e.g., an ancestor <form> for example).
insertedIntoTree(bool)468 virtual void insertedIntoTree(bool /*deep*/) { }
removedFromTree(bool)469 virtual void removedFromTree(bool /*deep*/) { }
470
471 /**
472 * Notifies the node that it's list of children have changed (either by adding or removing child nodes), or a child
473 * node that is of the type CDATA_SECTION_NODE, TEXT_NODE or COMMENT_NODE has changed its value.
474 */
475 virtual void childrenChanged(bool /*changedByParser*/ = false, Node* /*beforeChange*/ = 0, Node* /*afterChange*/ = 0, int /*childCountDelta*/ = 0) { }
476
477 #if !defined(NDEBUG) || defined(ANDROID_DOM_LOGGING)
478 virtual void formatForDebugger(char* buffer, unsigned length) const;
479
480 void showNode(const char* prefix = "") const;
481 void showTreeForThis() const;
482 void showTreeAndMark(const Node* markedNode1, const char* markedLabel1, const Node* markedNode2 = 0, const char* markedLabel2 = 0) const;
483 #endif
484
485 void registerDynamicNodeList(DynamicNodeList*);
486 void unregisterDynamicNodeList(DynamicNodeList*);
487 void notifyNodeListsChildrenChanged();
488 void notifyLocalNodeListsChildrenChanged();
489 void notifyNodeListsAttributeChanged();
490 void notifyLocalNodeListsAttributeChanged();
491
492 PassRefPtr<NodeList> getElementsByTagName(const String&);
493 PassRefPtr<NodeList> getElementsByTagNameNS(const AtomicString& namespaceURI, const String& localName);
494 PassRefPtr<NodeList> getElementsByName(const String& elementName);
495 PassRefPtr<NodeList> getElementsByClassName(const String& classNames);
496
497 PassRefPtr<Element> querySelector(const String& selectors, ExceptionCode&);
498 PassRefPtr<NodeList> querySelectorAll(const String& selectors, ExceptionCode&);
499
500 unsigned short compareDocumentPosition(Node*);
501
502 #ifdef ANDROID_INSTRUMENT
503 // Overridden to prevent the normal new from being called.
504 void* operator new(size_t) throw();
505
506 // Overridden to prevent the normal delete from being called.
507 void operator delete(void*, size_t);
508
509 static size_t reportDOMNodesSize();
510 #endif
511
512 protected:
513 virtual void willMoveToNewOwnerDocument();
514 virtual void didMoveToNewOwnerDocument();
515
addSubresourceAttributeURLs(ListHashSet<KURL> &)516 virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const { }
517 void setTabIndexExplicitly(short);
518
hasRareData()519 bool hasRareData() const { return m_hasRareData; }
520
521 NodeRareData* rareData() const;
522 NodeRareData* ensureRareData();
523
524 public:
toNode()525 virtual Node* toNode() { return this; }
526
527 virtual ScriptExecutionContext* scriptExecutionContext() const;
528
529 // Used for standard DOM addEventListener / removeEventListener APIs.
530 virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture);
531 virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture);
532
533 // Used for legacy "onEvent" property APIs.
534 void setAttributeEventListener(const AtomicString& eventType, PassRefPtr<EventListener>);
535 void clearAttributeEventListener(const AtomicString& eventType);
536 EventListener* getAttributeEventListener(const AtomicString& eventType) const;
537
538 virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&);
539 bool dispatchEvent(const AtomicString& eventType, bool canBubble, bool cancelable);
540
removeAllEventListeners()541 void removeAllEventListeners() { if (hasRareData()) removeAllEventListenersSlowCase(); }
542
543 void dispatchSubtreeModifiedEvent();
544 void dispatchUIEvent(const AtomicString& eventType, int detail, PassRefPtr<Event> underlyingEvent);
545 bool dispatchKeyEvent(const PlatformKeyboardEvent&);
546 void dispatchWheelEvent(PlatformWheelEvent&);
547 bool dispatchMouseEvent(const PlatformMouseEvent&, const AtomicString& eventType,
548 int clickCount = 0, Node* relatedTarget = 0);
549 bool dispatchMouseEvent(const AtomicString& eventType, int button, int clickCount,
550 int pageX, int pageY, int screenX, int screenY,
551 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
552 bool isSimulated, Node* relatedTarget, PassRefPtr<Event> underlyingEvent);
553 void dispatchSimulatedMouseEvent(const AtomicString& eventType, PassRefPtr<Event> underlyingEvent);
554 void dispatchSimulatedClick(PassRefPtr<Event> underlyingEvent, bool sendMouseEvents = false, bool showPressedLook = true);
555 void dispatchProgressEvent(const AtomicString& eventType, bool lengthComputableArg, unsigned loadedArg, unsigned totalArg);
556 void dispatchWebKitAnimationEvent(const AtomicString& eventType, const String& animationName, double elapsedTime);
557 void dispatchWebKitTransitionEvent(const AtomicString& eventType, const String& propertyName, double elapsedTime);
558 void dispatchMutationEvent(const AtomicString& type, bool canBubble, PassRefPtr<Node> relatedNode, const String& prevValue, const String& newValue, ExceptionCode&);
559
560 bool dispatchGenericEvent(PassRefPtr<Event>);
561
562 virtual void handleLocalEvents(Event*, bool useCapture);
563
564 virtual void dispatchFocusEvent();
565 virtual void dispatchBlurEvent();
566
567 /**
568 * Perform the default action for an event e.g. submitting a form
569 */
570 virtual void defaultEventHandler(Event*);
571
572 /**
573 * Used for disabled form elements; if true, prevents mouse events from being dispatched
574 * to event listeners, and prevents DOMActivate events from being sent at all.
575 */
576 virtual bool disabled() const;
577
578 const RegisteredEventListenerVector& eventListeners() const;
579
580 // These 4 attribute event handler attributes are overrided by HTMLBodyElement
581 // and HTMLFrameSetElement to forward to the DOMWindow.
582 virtual EventListener* onblur() const;
583 virtual void setOnblur(PassRefPtr<EventListener>);
584 virtual EventListener* onerror() const;
585 virtual void setOnerror(PassRefPtr<EventListener>);
586 virtual EventListener* onfocus() const;
587 virtual void setOnfocus(PassRefPtr<EventListener>);
588 virtual EventListener* onload() const;
589 virtual void setOnload(PassRefPtr<EventListener>);
590
591 EventListener* onabort() const;
592 void setOnabort(PassRefPtr<EventListener>);
593 EventListener* onchange() const;
594 void setOnchange(PassRefPtr<EventListener>);
595 EventListener* onclick() const;
596 void setOnclick(PassRefPtr<EventListener>);
597 EventListener* oncontextmenu() const;
598 void setOncontextmenu(PassRefPtr<EventListener>);
599 EventListener* ondblclick() const;
600 void setOndblclick(PassRefPtr<EventListener>);
601 EventListener* oninput() const;
602 void setOninput(PassRefPtr<EventListener>);
603 EventListener* onkeydown() const;
604 void setOnkeydown(PassRefPtr<EventListener>);
605 EventListener* onkeypress() const;
606 void setOnkeypress(PassRefPtr<EventListener>);
607 EventListener* onkeyup() const;
608 void setOnkeyup(PassRefPtr<EventListener>);
609 EventListener* onmousedown() const;
610 void setOnmousedown(PassRefPtr<EventListener>);
611 EventListener* onmousemove() const;
612 void setOnmousemove(PassRefPtr<EventListener>);
613 EventListener* onmouseout() const;
614 void setOnmouseout(PassRefPtr<EventListener>);
615 EventListener* onmouseover() const;
616 void setOnmouseover(PassRefPtr<EventListener>);
617 EventListener* onmouseup() const;
618 void setOnmouseup(PassRefPtr<EventListener>);
619 EventListener* onmousewheel() const;
620 void setOnmousewheel(PassRefPtr<EventListener>);
621 EventListener* ondragenter() const;
622 void setOndragenter(PassRefPtr<EventListener>);
623 EventListener* ondragover() const;
624 void setOndragover(PassRefPtr<EventListener>);
625 EventListener* ondragleave() const;
626 void setOndragleave(PassRefPtr<EventListener>);
627 EventListener* ondrop() const;
628 void setOndrop(PassRefPtr<EventListener>);
629 EventListener* ondragstart() const;
630 void setOndragstart(PassRefPtr<EventListener>);
631 EventListener* ondrag() const;
632 void setOndrag(PassRefPtr<EventListener>);
633 EventListener* ondragend() const;
634 void setOndragend(PassRefPtr<EventListener>);
635 EventListener* onscroll() const;
636 void setOnscroll(PassRefPtr<EventListener>);
637 EventListener* onselect() const;
638 void setOnselect(PassRefPtr<EventListener>);
639 EventListener* onsubmit() const;
640 void setOnsubmit(PassRefPtr<EventListener>);
641
642 // WebKit extensions
643 EventListener* onbeforecut() const;
644 void setOnbeforecut(PassRefPtr<EventListener>);
645 EventListener* oncut() const;
646 void setOncut(PassRefPtr<EventListener>);
647 EventListener* onbeforecopy() const;
648 void setOnbeforecopy(PassRefPtr<EventListener>);
649 EventListener* oncopy() const;
650 void setOncopy(PassRefPtr<EventListener>);
651 EventListener* onbeforepaste() const;
652 void setOnbeforepaste(PassRefPtr<EventListener>);
653 EventListener* onpaste() const;
654 void setOnpaste(PassRefPtr<EventListener>);
655 EventListener* onreset() const;
656 void setOnreset(PassRefPtr<EventListener>);
657 EventListener* onsearch() const;
658 void setOnsearch(PassRefPtr<EventListener>);
659 EventListener* onselectstart() const;
660 void setOnselectstart(PassRefPtr<EventListener>);
661 EventListener* onunload() const;
662 void setOnunload(PassRefPtr<EventListener>);
663 #if ENABLE(TOUCH_EVENTS) // Android
664 EventListener* ontouchstart() const;
665 void setOntouchstart(PassRefPtr<EventListener>);
666 EventListener* ontouchend() const;
667 void setOntouchend(PassRefPtr<EventListener>);
668 EventListener* ontouchmove() const;
669 void setOntouchmove(PassRefPtr<EventListener>);
670 EventListener* ontouchcancel() const;
671 void setOntouchcancel(PassRefPtr<EventListener>);
672 #endif
673
674 using TreeShared<Node>::ref;
675 using TreeShared<Node>::deref;
676
677 private:
refEventTarget()678 virtual void refEventTarget() { ref(); }
derefEventTarget()679 virtual void derefEventTarget() { deref(); }
680
681 void removeAllEventListenersSlowCase();
682
683 private:
684 virtual NodeRareData* createRareData();
685 Node* containerChildNode(unsigned index) const;
686 unsigned containerChildNodeCount() const;
687 Node* containerFirstChild() const;
688 Node* containerLastChild() const;
689 bool rareDataFocused() const;
690
691 virtual RenderStyle* nonRendererRenderStyle() const;
692
693 virtual const AtomicString& virtualPrefix() const;
694 virtual const AtomicString& virtualLocalName() const;
695 virtual const AtomicString& virtualNamespaceURI() const;
696
697 Element* ancestorElement() const;
698
699 void appendTextContent(bool convertBRsToNewlines, StringBuilder&) const;
700
701 DocPtr<Document> m_document;
702 Node* m_previous;
703 Node* m_next;
704 RenderObject* m_renderer;
705
706 unsigned m_styleChange : 2;
707 bool m_hasId : 1;
708 bool m_hasClass : 1;
709 bool m_attached : 1;
710 bool m_childNeedsStyleRecalc : 1;
711 bool m_inDocument : 1;
712 bool m_isLink : 1;
713 bool m_active : 1;
714 bool m_hovered : 1;
715 bool m_inActiveChain : 1;
716 bool m_inDetach : 1;
717 bool m_inSubtreeMark : 1;
718 bool m_hasRareData : 1;
719 const bool m_isElement : 1;
720 const bool m_isContainer : 1;
721 const bool m_isText : 1;
722
723 protected:
724 // These bits are used by the Element derived class, pulled up here so they can
725 // be stored in the same memory word as the Node bits above.
726 bool m_parsingChildrenFinished : 1;
727 #if ENABLE(SVG)
728 mutable bool m_areSVGAttributesValid : 1;
729 #endif
730
731 // These bits are used by the StyledElement derived class, and live here for the
732 // same reason as above.
733 mutable bool m_isStyleAttributeValid : 1;
734 mutable bool m_synchronizingStyleAttribute : 1;
735
736 #if ENABLE(SVG)
737 // This bit is used by the SVGElement derived class, and lives here for the same
738 // reason as above.
739 mutable bool m_synchronizingSVGAttributes : 1;
740 #endif
741
742 // 11 bits remaining
743 };
744
745 // Used in Node::addSubresourceAttributeURLs() and in addSubresourceStyleURLs()
addSubresourceURL(ListHashSet<KURL> & urls,const KURL & url)746 inline void addSubresourceURL(ListHashSet<KURL>& urls, const KURL& url)
747 {
748 if (!url.isNull())
749 urls.add(url);
750 }
751
752 } //namespace
753
754 #ifndef NDEBUG
755 // Outside the WebCore namespace for ease of invocation from gdb.
756 void showTree(const WebCore::Node*);
757 #endif
758
759 #endif
760