2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2001 Peter Kelly (pmk@post.com)
5 * (C) 2001 Dirk Mueller (mueller@kde.org)
6 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
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.
29 #include "FragmentScriptingPermission.h"
30 #include "NamedNodeMap.h"
31 #include "ScrollTypes.h"
40 class ElementRareData;
42 class WebKitAnimationList;
44 enum SpellcheckAttributeState {
45 SpellcheckAttributeTrue,
46 SpellcheckAttributeFalse,
47 SpellcheckAttributeDefault
50 class Element : public ContainerNode {
52 static PassRefPtr<Element> create(const QualifiedName&, Document*);
55 DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
56 DEFINE_ATTRIBUTE_EVENT_LISTENER(change);
57 DEFINE_ATTRIBUTE_EVENT_LISTENER(click);
58 DEFINE_ATTRIBUTE_EVENT_LISTENER(contextmenu);
59 DEFINE_ATTRIBUTE_EVENT_LISTENER(dblclick);
60 DEFINE_ATTRIBUTE_EVENT_LISTENER(dragenter);
61 DEFINE_ATTRIBUTE_EVENT_LISTENER(dragover);
62 DEFINE_ATTRIBUTE_EVENT_LISTENER(dragleave);
63 DEFINE_ATTRIBUTE_EVENT_LISTENER(drop);
64 DEFINE_ATTRIBUTE_EVENT_LISTENER(dragstart);
65 DEFINE_ATTRIBUTE_EVENT_LISTENER(drag);
66 DEFINE_ATTRIBUTE_EVENT_LISTENER(dragend);
67 DEFINE_ATTRIBUTE_EVENT_LISTENER(formchange);
68 DEFINE_ATTRIBUTE_EVENT_LISTENER(forminput);
69 DEFINE_ATTRIBUTE_EVENT_LISTENER(input);
70 DEFINE_ATTRIBUTE_EVENT_LISTENER(invalid);
71 DEFINE_ATTRIBUTE_EVENT_LISTENER(keydown);
72 DEFINE_ATTRIBUTE_EVENT_LISTENER(keypress);
73 DEFINE_ATTRIBUTE_EVENT_LISTENER(keyup);
74 DEFINE_ATTRIBUTE_EVENT_LISTENER(mousedown);
75 DEFINE_ATTRIBUTE_EVENT_LISTENER(mousemove);
76 DEFINE_ATTRIBUTE_EVENT_LISTENER(mouseout);
77 DEFINE_ATTRIBUTE_EVENT_LISTENER(mouseover);
78 DEFINE_ATTRIBUTE_EVENT_LISTENER(mouseup);
79 DEFINE_ATTRIBUTE_EVENT_LISTENER(mousewheel);
80 DEFINE_ATTRIBUTE_EVENT_LISTENER(scroll);
81 DEFINE_ATTRIBUTE_EVENT_LISTENER(select);
82 DEFINE_ATTRIBUTE_EVENT_LISTENER(submit);
84 // These four attribute event handler attributes are overridden by HTMLBodyElement
85 // and HTMLFrameSetElement to forward to the DOMWindow.
86 DECLARE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(blur);
87 DECLARE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(error);
88 DECLARE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(focus);
89 DECLARE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(load);
92 DEFINE_ATTRIBUTE_EVENT_LISTENER(beforecut);
93 DEFINE_ATTRIBUTE_EVENT_LISTENER(cut);
94 DEFINE_ATTRIBUTE_EVENT_LISTENER(beforecopy);
95 DEFINE_ATTRIBUTE_EVENT_LISTENER(copy);
96 DEFINE_ATTRIBUTE_EVENT_LISTENER(beforepaste);
97 DEFINE_ATTRIBUTE_EVENT_LISTENER(paste);
98 DEFINE_ATTRIBUTE_EVENT_LISTENER(reset);
99 DEFINE_ATTRIBUTE_EVENT_LISTENER(search);
100 DEFINE_ATTRIBUTE_EVENT_LISTENER(selectstart);
101 #if ENABLE(TOUCH_EVENTS)
102 DEFINE_ATTRIBUTE_EVENT_LISTENER(touchstart);
103 DEFINE_ATTRIBUTE_EVENT_LISTENER(touchmove);
104 DEFINE_ATTRIBUTE_EVENT_LISTENER(touchend);
105 DEFINE_ATTRIBUTE_EVENT_LISTENER(touchcancel);
107 #if ENABLE(FULLSCREEN_API)
108 DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitfullscreenchange);
111 virtual PassRefPtr<DocumentFragment> deprecatedCreateContextualFragment(const String&, FragmentScriptingPermission = FragmentScriptingAllowed);
113 bool hasAttribute(const QualifiedName&) const;
114 const AtomicString& getAttribute(const QualifiedName&) const;
115 void setAttribute(const QualifiedName&, const AtomicString& value, ExceptionCode&);
116 void removeAttribute(const QualifiedName&, ExceptionCode&);
118 // Typed getters and setters for language bindings.
119 int getIntegralAttribute(const QualifiedName& attributeName) const;
120 void setIntegralAttribute(const QualifiedName& attributeName, int value);
121 unsigned getUnsignedIntegralAttribute(const QualifiedName& attributeName) const;
122 void setUnsignedIntegralAttribute(const QualifiedName& attributeName, unsigned value);
124 // Call this to get the value of an attribute that is known not to be the style
125 // attribute or one of the SVG animatable attributes.
126 bool fastHasAttribute(const QualifiedName&) const;
127 const AtomicString& fastGetAttribute(const QualifiedName&) const;
129 bool hasAttributes() const;
131 bool hasAttribute(const String& name) const;
132 bool hasAttributeNS(const String& namespaceURI, const String& localName) const;
134 const AtomicString& getAttribute(const String& name) const;
135 const AtomicString& getAttributeNS(const String& namespaceURI, const String& localName) const;
137 void setAttribute(const AtomicString& name, const AtomicString& value, ExceptionCode&);
138 void setAttributeNS(const AtomicString& namespaceURI, const AtomicString& qualifiedName, const AtomicString& value, ExceptionCode&, FragmentScriptingPermission = FragmentScriptingAllowed);
140 bool isIdAttributeName(const QualifiedName&) const;
141 const AtomicString& getIdAttribute() const;
142 void setIdAttribute(const AtomicString&);
144 // Call this to get the value of the id attribute for style resolution purposes.
145 // The value will already be lowercased if the document is in compatibility mode,
146 // so this function is not suitable for non-style uses.
147 const AtomicString& idForStyleResolution() const;
149 void scrollIntoView(bool alignToTop = true);
150 void scrollIntoViewIfNeeded(bool centerIfNeeded = true);
152 void scrollByLines(int lines);
153 void scrollByPages(int pages);
159 Element* offsetParent();
164 virtual int scrollLeft() const;
165 virtual int scrollTop() const;
166 virtual void setScrollLeft(int);
167 virtual void setScrollTop(int);
168 virtual int scrollWidth() const;
169 virtual int scrollHeight() const;
171 IntRect boundsInWindowSpace() const;
173 PassRefPtr<ClientRectList> getClientRects() const;
174 PassRefPtr<ClientRect> getBoundingClientRect() const;
176 // Returns the absolute bounding box translated into screen coordinates:
177 IntRect screenRect() const;
179 void removeAttribute(const String& name, ExceptionCode&);
180 void removeAttributeNS(const String& namespaceURI, const String& localName, ExceptionCode&);
182 PassRefPtr<Attr> getAttributeNode(const String& name);
183 PassRefPtr<Attr> getAttributeNodeNS(const String& namespaceURI, const String& localName);
184 PassRefPtr<Attr> setAttributeNode(Attr*, ExceptionCode&);
185 PassRefPtr<Attr> setAttributeNodeNS(Attr*, ExceptionCode&);
186 PassRefPtr<Attr> removeAttributeNode(Attr*, ExceptionCode&);
188 virtual CSSStyleDeclaration* style();
190 const QualifiedName& tagQName() const { return m_tagName; }
191 String tagName() const { return nodeName(); }
192 bool hasTagName(const QualifiedName& tagName) const { return m_tagName.matches(tagName); }
194 // A fast function for checking the local name against another atomic string.
195 bool hasLocalName(const AtomicString& other) const { return m_tagName.localName() == other; }
196 bool hasLocalName(const QualifiedName& other) const { return m_tagName.localName() == other.localName(); }
198 const AtomicString& localName() const { return m_tagName.localName(); }
199 const AtomicString& prefix() const { return m_tagName.prefix(); }
200 const AtomicString& namespaceURI() const { return m_tagName.namespaceURI(); }
202 virtual KURL baseURI() const;
204 virtual String nodeName() const;
206 PassRefPtr<Element> cloneElementWithChildren();
207 PassRefPtr<Element> cloneElementWithoutChildren();
209 void normalizeAttributes();
210 String nodeNamePreservingCase() const;
212 // convenience methods which ignore exceptions
213 void setAttribute(const QualifiedName&, const AtomicString& value);
214 void setBooleanAttribute(const QualifiedName& name, bool);
215 // Please don't use setCStringAttribute in performance-sensitive code;
216 // use a static AtomicString value instead to avoid the conversion overhead.
217 void setCStringAttribute(const QualifiedName&, const char* cStringValue);
219 NamedNodeMap* attributes(bool readonly = false) const;
221 // This method is called whenever an attribute is added, changed or removed.
222 virtual void attributeChanged(Attribute*, bool preserveDecls = false);
224 void setAttributeMap(PassRefPtr<NamedNodeMap>, FragmentScriptingPermission = FragmentScriptingAllowed);
225 NamedNodeMap* attributeMap() const { return m_attributeMap.get(); }
227 virtual void copyNonAttributeProperties(const Element* /*source*/) { }
229 virtual void attach();
230 virtual void detach();
231 virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
232 virtual void recalcStyle(StyleChange = NoChange);
235 void setShadowRoot(PassRefPtr<Node>);
236 virtual const AtomicString& shadowPseudoId() const;
238 RenderStyle* computedStyle(PseudoId = NOPSEUDO);
240 AtomicString computeInheritedLanguage() const;
242 void dispatchAttrRemovalEvent(Attribute*);
243 void dispatchAttrAdditionEvent(Attribute*);
245 virtual void accessKeyAction(bool /*sendToAnyEvent*/) { }
247 virtual bool isURLAttribute(Attribute*) const;
249 KURL getURLAttribute(const QualifiedName&) const;
250 KURL getNonEmptyURLAttribute(const QualifiedName&) const;
252 virtual const QualifiedName& imageSourceAttributeName() const;
253 virtual String target() const { return String(); }
255 virtual void focus(bool restorePreviousSelection = true);
256 virtual void updateFocusAppearance(bool restorePreviousSelection);
259 String innerText() const;
260 String outerText() const;
262 virtual String title() const;
264 String openTagStartToString() const;
266 void updateId(const AtomicString& oldId, const AtomicString& newId);
268 IntSize minimumSizeForResizing() const;
269 void setMinimumSizeForResizing(const IntSize&);
271 // Use Document::registerForDocumentActivationCallbacks() to subscribe to these
272 virtual void documentWillBecomeInactive() { }
273 virtual void documentDidBecomeActive() { }
275 // Use Document::registerForMediaVolumeCallbacks() to subscribe to this
276 virtual void mediaVolumeDidChange() { }
278 // Use Document::registerForPrivateBrowsingStateChangedCallbacks() to subscribe to this.
279 virtual void privateBrowsingStateDidChange() { }
281 bool isFinishedParsingChildren() const { return isParsingChildrenFinished(); }
282 virtual void finishParsingChildren();
283 virtual void beginParsingChildren();
285 // ElementTraversal API
286 Element* firstElementChild() const;
287 Element* lastElementChild() const;
288 Element* previousElementSibling() const;
289 Element* nextElementSibling() const;
290 unsigned childElementCount() const;
292 bool webkitMatchesSelector(const String& selectors, ExceptionCode&);
294 DOMTokenList* classList();
295 DOMTokenList* optionalClassList() const;
297 DOMStringMap* dataset();
298 DOMStringMap* optionalDataset() const;
301 virtual bool isMathMLElement() const { return false; }
303 static bool isMathMLElement() { return false; }
306 virtual bool isFormControlElement() const { return false; }
307 virtual bool isEnabledFormControl() const { return true; }
308 virtual bool isReadOnlyFormControl() const { return false; }
309 virtual bool isSpinButtonElement() const { return false; }
310 virtual bool isTextFormControl() const { return false; }
311 virtual bool isOptionalFormControl() const { return false; }
312 virtual bool isRequiredFormControl() const { return false; }
313 virtual bool isDefaultButtonForForm() const { return false; }
314 virtual bool willValidate() const { return false; }
315 virtual bool isValidFormControlElement() { return false; }
316 virtual bool hasUnacceptableValue() const { return false; }
317 virtual bool isInRange() const { return false; }
318 virtual bool isOutOfRange() const { return false; }
320 virtual bool formControlValueMatchesRenderer() const { return false; }
321 virtual void setFormControlValueMatchesRenderer(bool) { }
323 virtual const AtomicString& formControlName() const { return nullAtom; }
324 virtual const AtomicString& formControlType() const { return nullAtom; }
326 virtual bool shouldSaveAndRestoreFormControlState() const { return true; }
327 virtual bool saveFormControlState(String&) const { return false; }
328 virtual void restoreFormControlState(const String&) { }
330 virtual bool wasChangedSinceLastFormControlChangeEvent() const;
331 virtual void setChangedSinceLastFormControlChangeEvent(bool);
332 virtual void dispatchFormControlChangeEvent() { }
335 virtual bool childShouldCreateRenderer(Node*) const;
338 #if ENABLE(FULLSCREEN_API)
340 ALLOW_KEYBOARD_INPUT = 1
343 void webkitRequestFullScreen(unsigned short flags);
346 virtual bool isSpellCheckingEnabled() const;
348 PassRefPtr<WebKitAnimationList> webkitGetAnimations() const;
351 Element(const QualifiedName& tagName, Document* document, ConstructionType type)
352 : ContainerNode(document, type)
357 virtual void insertedIntoDocument();
358 virtual void removedFromDocument();
359 virtual void insertedIntoTree(bool);
360 virtual void removedFromTree(bool);
361 virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
363 // The implementation of Element::attributeChanged() calls the following two functions.
364 // They are separated to allow a different flow of control in StyledElement::attributeChanged().
365 void recalcStyleIfNeededAfterAttributeChanged(Attribute*);
366 void updateAfterAttributeChanged(Attribute*);
369 void scrollByUnits(int units, ScrollGranularity);
371 virtual void setPrefix(const AtomicString&, ExceptionCode&);
372 virtual NodeType nodeType() const;
373 virtual bool childTypeAllowed(NodeType);
375 virtual PassRefPtr<Attribute> createAttribute(const QualifiedName&, const AtomicString& value);
378 virtual void formatForDebugger(char* buffer, unsigned length) const;
381 bool pseudoStyleCacheIsInvalid(const RenderStyle* currentStyle, RenderStyle* newStyle);
383 void createAttributeMap() const;
385 virtual void updateStyleAttribute() const { }
388 virtual void updateAnimatedSVGAttribute(const QualifiedName&) const { }
391 void cancelFocusAppearanceUpdate();
393 virtual const AtomicString& virtualPrefix() const { return prefix(); }
394 virtual const AtomicString& virtualLocalName() const { return localName(); }
395 virtual const AtomicString& virtualNamespaceURI() const { return namespaceURI(); }
396 virtual RenderStyle* virtualComputedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) { return computedStyle(pseudoElementSpecifier); }
398 // cloneNode is private so that non-virtual cloneElementWithChildren and cloneElementWithoutChildren
400 virtual PassRefPtr<Node> cloneNode(bool deep);
401 virtual PassRefPtr<Element> cloneElementWithoutAttributesAndChildren() const;
403 QualifiedName m_tagName;
404 virtual NodeRareData* createRareData();
406 ElementRareData* rareData() const;
407 ElementRareData* ensureRareData();
409 SpellcheckAttributeState spellcheckAttributeState() const;
410 void removeShadowRoot();
413 mutable RefPtr<NamedNodeMap> m_attributeMap;
416 inline Element* toElement(Node* node)
418 ASSERT(!node || node->isElementNode());
419 return static_cast<Element*>(node);
422 inline const Element* toElement(const Node* node)
424 ASSERT(!node || node->isElementNode());
425 return static_cast<const Element*>(node);
428 // This will catch anyone doing an unnecessary cast.
429 void toElement(const Element*);
431 inline bool Node::hasTagName(const QualifiedName& name) const
433 return isElementNode() && toElement(this)->hasTagName(name);
436 inline bool Node::hasLocalName(const AtomicString& name) const
438 return isElementNode() && toElement(this)->hasLocalName(name);
441 inline bool Node::hasAttributes() const
443 return isElementNode() && toElement(this)->hasAttributes();
446 inline NamedNodeMap* Node::attributes() const
448 return isElementNode() ? toElement(this)->attributes() : 0;
451 inline Element* Node::parentElement() const
453 ContainerNode* parent = parentNode();
454 return parent && parent->isElementNode() ? toElement(parent) : 0;
457 inline NamedNodeMap* Element::attributes(bool readonly) const
459 if (!isStyleAttributeValid())
460 updateStyleAttribute();
463 if (!areSVGAttributesValid())
464 updateAnimatedSVGAttribute(anyQName());
467 if (!readonly && !m_attributeMap)
468 createAttributeMap();
469 return m_attributeMap.get();
472 inline void Element::updateId(const AtomicString& oldId, const AtomicString& newId)
480 Document* doc = document();
481 if (!oldId.isEmpty())
482 doc->removeElementById(oldId, this);
483 if (!newId.isEmpty())
484 doc->addElementById(newId, this);
487 inline bool Element::fastHasAttribute(const QualifiedName& name) const
489 return m_attributeMap && m_attributeMap->getAttributeItem(name);
492 inline const AtomicString& Element::fastGetAttribute(const QualifiedName& name) const
494 if (m_attributeMap) {
495 if (Attribute* attribute = m_attributeMap->getAttributeItem(name))
496 return attribute->value();
501 inline const AtomicString& Element::idForStyleResolution() const
504 return m_attributeMap->idForStyleResolution();
507 inline bool Element::isIdAttributeName(const QualifiedName& attributeName) const
509 // FIXME: This check is probably not correct for the case where the document has an id attribute
510 // with a non-null namespace, because it will return false, a false negative, if the prefixes
511 // don't match but the local name and namespace both do. However, since this has been like this
512 // for a while and the code paths may be hot, we'll have to measure performance if we fix it.
513 return attributeName == document()->idAttributeName();
516 inline const AtomicString& Element::getIdAttribute() const
518 return fastGetAttribute(document()->idAttributeName());
521 inline void Element::setIdAttribute(const AtomicString& value)
523 setAttribute(document()->idAttributeName(), value);
526 inline const AtomicString& Element::shadowPseudoId() const
531 inline Element* firstElementChild(const ContainerNode* container)
533 ASSERT_ARG(container, container);
534 Node* child = container->firstChild();
535 while (child && !child->isElementNode())
536 child = child->nextSibling();
537 return static_cast<Element*>(child);