Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1 | /* |
| 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 | * (C) 2007 David Smith (catfish.man@gmail.com) |
| 7 | * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved. |
| 8 | * (C) 2007 Eric Seidel (eric@webkit.org) |
| 9 | * |
| 10 | * This library is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU Library General Public |
| 12 | * License as published by the Free Software Foundation; either |
| 13 | * version 2 of the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This library is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * Library General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU Library General Public License |
| 21 | * along with this library; see the file COPYING.LIB. If not, write to |
| 22 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 23 | * Boston, MA 02110-1301, USA. |
| 24 | */ |
| 25 | |
| 26 | #include "config.h" |
| 27 | #include "core/dom/Element.h" |
| 28 | |
| 29 | #include "HTMLNames.h" |
| 30 | #include "XMLNSNames.h" |
| 31 | #include "XMLNames.h" |
| 32 | #include "core/accessibility/AXObjectCache.h" |
| 33 | #include "core/css/CSSParser.h" |
| 34 | #include "core/css/CSSSelectorList.h" |
| 35 | #include "core/css/StylePropertySet.h" |
Torne (Richard Coles) | 81a5157 | 2013-05-13 16:52:28 +0100 | [diff] [blame] | 36 | #include "core/css/resolver/StyleResolver.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 37 | #include "core/dom/Attr.h" |
| 38 | #include "core/dom/ClientRect.h" |
| 39 | #include "core/dom/ClientRectList.h" |
| 40 | #include "core/dom/CustomElementRegistry.h" |
| 41 | #include "core/dom/DatasetDOMStringMap.h" |
| 42 | #include "core/dom/Document.h" |
| 43 | #include "core/dom/DocumentFragment.h" |
| 44 | #include "core/dom/DocumentSharedObjectPool.h" |
| 45 | #include "core/dom/ElementRareData.h" |
| 46 | #include "core/dom/ExceptionCode.h" |
| 47 | #include "core/dom/MutationObserverInterestGroup.h" |
| 48 | #include "core/dom/MutationRecord.h" |
| 49 | #include "core/dom/NamedNodeMap.h" |
| 50 | #include "core/dom/NodeList.h" |
| 51 | #include "core/dom/NodeRenderStyle.h" |
| 52 | #include "core/dom/NodeRenderingContext.h" |
| 53 | #include "core/dom/NodeTraversal.h" |
| 54 | #include "core/dom/PseudoElement.h" |
| 55 | #include "core/dom/SelectorQuery.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 56 | #include "core/dom/Text.h" |
| 57 | #include "core/dom/WebCoreMemoryInstrumentation.h" |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 58 | #include "core/dom/shadow/InsertionPoint.h" |
| 59 | #include "core/dom/shadow/ShadowRoot.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 60 | #include "core/editing/FrameSelection.h" |
| 61 | #include "core/editing/TextIterator.h" |
| 62 | #include "core/editing/htmlediting.h" |
| 63 | #include "core/html/ClassList.h" |
| 64 | #include "core/html/DOMTokenList.h" |
| 65 | #include "core/html/HTMLCollection.h" |
| 66 | #include "core/html/HTMLDocument.h" |
| 67 | #include "core/html/HTMLElement.h" |
| 68 | #include "core/html/HTMLFormControlsCollection.h" |
| 69 | #include "core/html/HTMLFrameOwnerElement.h" |
| 70 | #include "core/html/HTMLLabelElement.h" |
| 71 | #include "core/html/HTMLOptionsCollection.h" |
| 72 | #include "core/html/HTMLTableRowsCollection.h" |
| 73 | #include "core/html/VoidCallback.h" |
| 74 | #include "core/html/parser/HTMLParserIdioms.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 75 | #include "core/inspector/InspectorInstrumentation.h" |
| 76 | #include "core/page/FocusController.h" |
| 77 | #include "core/page/Frame.h" |
| 78 | #include "core/page/FrameView.h" |
| 79 | #include "core/page/Page.h" |
| 80 | #include "core/page/PointerLockController.h" |
| 81 | #include "core/page/Settings.h" |
| 82 | #include "core/rendering/FlowThreadController.h" |
| 83 | #include "core/rendering/RenderRegion.h" |
| 84 | #include "core/rendering/RenderView.h" |
| 85 | #include "core/rendering/RenderWidget.h" |
| 86 | #include <wtf/BitVector.h> |
| 87 | #include <wtf/MemoryInstrumentationVector.h> |
| 88 | #include <wtf/text/CString.h> |
| 89 | |
| 90 | #if ENABLE(SVG) |
| 91 | #include "SVGNames.h" |
| 92 | #include "core/svg/SVGDocumentExtensions.h" |
| 93 | #include "core/svg/SVGElement.h" |
| 94 | #endif |
| 95 | |
| 96 | namespace WebCore { |
| 97 | |
| 98 | using namespace HTMLNames; |
| 99 | using namespace XMLNames; |
| 100 | |
| 101 | static inline bool shouldIgnoreAttributeCase(const Element* e) |
| 102 | { |
| 103 | return e && e->document()->isHTMLDocument() && e->isHTMLElement(); |
| 104 | } |
| 105 | |
| 106 | class StyleResolverParentPusher { |
| 107 | public: |
| 108 | StyleResolverParentPusher(Element* parent) |
| 109 | : m_parent(parent) |
| 110 | , m_pushedStyleResolver(0) |
| 111 | { |
| 112 | } |
| 113 | void push() |
| 114 | { |
| 115 | if (m_pushedStyleResolver) |
| 116 | return; |
| 117 | m_pushedStyleResolver = m_parent->document()->styleResolver(); |
| 118 | m_pushedStyleResolver->pushParentElement(m_parent); |
| 119 | } |
| 120 | ~StyleResolverParentPusher() |
| 121 | { |
| 122 | |
| 123 | if (!m_pushedStyleResolver) |
| 124 | return; |
| 125 | |
| 126 | // This tells us that our pushed style selector is in a bad state, |
| 127 | // so we should just bail out in that scenario. |
| 128 | ASSERT(m_pushedStyleResolver == m_parent->document()->styleResolver()); |
| 129 | if (m_pushedStyleResolver != m_parent->document()->styleResolver()) |
| 130 | return; |
| 131 | |
| 132 | m_pushedStyleResolver->popParentElement(m_parent); |
| 133 | } |
| 134 | |
| 135 | private: |
| 136 | Element* m_parent; |
| 137 | StyleResolver* m_pushedStyleResolver; |
| 138 | }; |
| 139 | |
| 140 | typedef Vector<RefPtr<Attr> > AttrNodeList; |
| 141 | typedef HashMap<Element*, OwnPtr<AttrNodeList> > AttrNodeListMap; |
| 142 | |
| 143 | static AttrNodeListMap& attrNodeListMap() |
| 144 | { |
| 145 | DEFINE_STATIC_LOCAL(AttrNodeListMap, map, ()); |
| 146 | return map; |
| 147 | } |
| 148 | |
| 149 | static AttrNodeList* attrNodeListForElement(Element* element) |
| 150 | { |
| 151 | if (!element->hasSyntheticAttrChildNodes()) |
| 152 | return 0; |
| 153 | ASSERT(attrNodeListMap().contains(element)); |
| 154 | return attrNodeListMap().get(element); |
| 155 | } |
| 156 | |
| 157 | static AttrNodeList* ensureAttrNodeListForElement(Element* element) |
| 158 | { |
| 159 | if (element->hasSyntheticAttrChildNodes()) { |
| 160 | ASSERT(attrNodeListMap().contains(element)); |
| 161 | return attrNodeListMap().get(element); |
| 162 | } |
| 163 | ASSERT(!attrNodeListMap().contains(element)); |
| 164 | element->setHasSyntheticAttrChildNodes(true); |
| 165 | AttrNodeListMap::AddResult result = attrNodeListMap().add(element, adoptPtr(new AttrNodeList)); |
| 166 | return result.iterator->value.get(); |
| 167 | } |
| 168 | |
| 169 | static void removeAttrNodeListForElement(Element* element) |
| 170 | { |
| 171 | ASSERT(element->hasSyntheticAttrChildNodes()); |
| 172 | ASSERT(attrNodeListMap().contains(element)); |
| 173 | attrNodeListMap().remove(element); |
| 174 | element->setHasSyntheticAttrChildNodes(false); |
| 175 | } |
| 176 | |
| 177 | static Attr* findAttrNodeInList(AttrNodeList* attrNodeList, const QualifiedName& name) |
| 178 | { |
| 179 | for (unsigned i = 0; i < attrNodeList->size(); ++i) { |
| 180 | if (attrNodeList->at(i)->qualifiedName() == name) |
| 181 | return attrNodeList->at(i).get(); |
| 182 | } |
| 183 | return 0; |
| 184 | } |
| 185 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 186 | PassRefPtr<Element> Element::create(const QualifiedName& tagName, Document* document) |
| 187 | { |
| 188 | return adoptRef(new Element(tagName, document, CreateElement)); |
| 189 | } |
| 190 | |
| 191 | Element::~Element() |
| 192 | { |
| 193 | #ifndef NDEBUG |
| 194 | if (document() && document()->renderer()) { |
| 195 | // When the document is not destroyed, an element that was part of a named flow |
| 196 | // content nodes should have been removed from the content nodes collection |
| 197 | // and the inNamedFlow flag reset. |
| 198 | ASSERT(!inNamedFlow()); |
| 199 | } |
| 200 | #endif |
| 201 | |
| 202 | if (hasRareData()) { |
| 203 | ElementRareData* data = elementRareData(); |
| 204 | data->setPseudoElement(BEFORE, 0); |
| 205 | data->setPseudoElement(AFTER, 0); |
| 206 | data->clearShadow(); |
| 207 | } |
| 208 | |
| 209 | if (isCustomElement() && document() && document()->registry()) { |
| 210 | document()->registry()->customElementWasDestroyed(this); |
| 211 | } |
| 212 | |
| 213 | if (hasSyntheticAttrChildNodes()) |
| 214 | detachAllAttrNodesFromElement(); |
| 215 | |
| 216 | #if ENABLE(SVG) |
| 217 | if (hasPendingResources()) { |
| 218 | document()->accessSVGExtensions()->removeElementFromPendingResources(this); |
| 219 | ASSERT(!hasPendingResources()); |
| 220 | } |
| 221 | #endif |
| 222 | } |
| 223 | |
| 224 | inline ElementRareData* Element::elementRareData() const |
| 225 | { |
| 226 | ASSERT(hasRareData()); |
| 227 | return static_cast<ElementRareData*>(rareData()); |
| 228 | } |
| 229 | |
| 230 | inline ElementRareData* Element::ensureElementRareData() |
| 231 | { |
| 232 | return static_cast<ElementRareData*>(ensureRareData()); |
| 233 | } |
| 234 | |
| 235 | void Element::clearTabIndexExplicitlyIfNeeded() |
| 236 | { |
| 237 | if (hasRareData()) |
| 238 | elementRareData()->clearTabIndexExplicitly(); |
| 239 | } |
| 240 | |
| 241 | void Element::setTabIndexExplicitly(short tabIndex) |
| 242 | { |
| 243 | ensureElementRareData()->setTabIndexExplicitly(tabIndex); |
| 244 | } |
| 245 | |
| 246 | bool Element::supportsFocus() const |
| 247 | { |
| 248 | return hasRareData() && elementRareData()->tabIndexSetExplicitly(); |
| 249 | } |
| 250 | |
| 251 | short Element::tabIndex() const |
| 252 | { |
| 253 | return hasRareData() ? elementRareData()->tabIndex() : 0; |
| 254 | } |
| 255 | |
| 256 | DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, blur); |
| 257 | DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, error); |
| 258 | DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, focus); |
| 259 | DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, load); |
| 260 | |
| 261 | PassRefPtr<Node> Element::cloneNode(bool deep) |
| 262 | { |
| 263 | return deep ? cloneElementWithChildren() : cloneElementWithoutChildren(); |
| 264 | } |
| 265 | |
| 266 | PassRefPtr<Element> Element::cloneElementWithChildren() |
| 267 | { |
| 268 | RefPtr<Element> clone = cloneElementWithoutChildren(); |
| 269 | cloneChildNodes(clone.get()); |
| 270 | return clone.release(); |
| 271 | } |
| 272 | |
| 273 | PassRefPtr<Element> Element::cloneElementWithoutChildren() |
| 274 | { |
| 275 | RefPtr<Element> clone = cloneElementWithoutAttributesAndChildren(); |
| 276 | // This will catch HTML elements in the wrong namespace that are not correctly copied. |
| 277 | // This is a sanity check as HTML overloads some of the DOM methods. |
| 278 | ASSERT(isHTMLElement() == clone->isHTMLElement()); |
| 279 | |
| 280 | clone->cloneDataFromElement(*this); |
| 281 | return clone.release(); |
| 282 | } |
| 283 | |
| 284 | PassRefPtr<Element> Element::cloneElementWithoutAttributesAndChildren() |
| 285 | { |
| 286 | return document()->createElement(tagQName(), false); |
| 287 | } |
| 288 | |
| 289 | PassRefPtr<Attr> Element::detachAttribute(size_t index) |
| 290 | { |
| 291 | ASSERT(elementData()); |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 292 | const Attribute* attribute = elementData()->attributeItem(index); |
| 293 | RefPtr<Attr> attrNode = attrIfExists(attribute->name()); |
| 294 | if (attrNode) |
| 295 | detachAttrNodeAtIndex(attrNode.get(), index); |
| 296 | else { |
| 297 | attrNode = Attr::create(document(), attribute->name(), attribute->value()); |
| 298 | removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute); |
| 299 | } |
| 300 | return attrNode.release(); |
| 301 | } |
| 302 | |
| 303 | void Element::detachAttrNodeAtIndex(Attr* attr, size_t index) |
| 304 | { |
| 305 | ASSERT(attr); |
| 306 | ASSERT(elementData()); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 307 | |
| 308 | const Attribute* attribute = elementData()->attributeItem(index); |
| 309 | ASSERT(attribute); |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 310 | ASSERT(attribute->name() == attr->qualifiedName()); |
| 311 | detachAttrNodeFromElementWithValue(attr, attribute->value()); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 312 | removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | void Element::removeAttribute(const QualifiedName& name) |
| 316 | { |
| 317 | if (!elementData()) |
| 318 | return; |
| 319 | |
| 320 | size_t index = elementData()->getAttributeItemIndex(name); |
| 321 | if (index == notFound) |
| 322 | return; |
| 323 | |
| 324 | removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute); |
| 325 | } |
| 326 | |
| 327 | void Element::setBooleanAttribute(const QualifiedName& name, bool value) |
| 328 | { |
| 329 | if (value) |
| 330 | setAttribute(name, emptyAtom); |
| 331 | else |
| 332 | removeAttribute(name); |
| 333 | } |
| 334 | |
| 335 | NamedNodeMap* Element::attributes() const |
| 336 | { |
| 337 | ElementRareData* rareData = const_cast<Element*>(this)->ensureElementRareData(); |
| 338 | if (NamedNodeMap* attributeMap = rareData->attributeMap()) |
| 339 | return attributeMap; |
| 340 | |
| 341 | rareData->setAttributeMap(NamedNodeMap::create(const_cast<Element*>(this))); |
| 342 | return rareData->attributeMap(); |
| 343 | } |
| 344 | |
Torne (Richard Coles) | 81a5157 | 2013-05-13 16:52:28 +0100 | [diff] [blame] | 345 | void Element::addActiveAnimation(Animation* animation) |
| 346 | { |
| 347 | ElementRareData* rareData = ensureElementRareData(); |
| 348 | if (!rareData->activeAnimations()) |
| 349 | rareData->setActiveAnimations(adoptPtr(new Vector<Animation*>)); |
| 350 | rareData->activeAnimations()->append(animation); |
| 351 | } |
| 352 | |
| 353 | void Element::removeActiveAnimation(Animation* animation) |
| 354 | { |
| 355 | ElementRareData* rareData = elementRareData(); |
| 356 | ASSERT(rareData); |
| 357 | size_t position = rareData->activeAnimations()->find(animation); |
| 358 | ASSERT(position != notFound); |
| 359 | rareData->activeAnimations()->remove(position); |
| 360 | } |
| 361 | |
| 362 | bool Element::hasActiveAnimations() const |
| 363 | { |
| 364 | return hasRareData() && elementRareData()->activeAnimations() |
| 365 | && elementRareData()->activeAnimations()->size(); |
| 366 | } |
| 367 | |
| 368 | Vector<Animation*>* Element::activeAnimations() const |
| 369 | { |
| 370 | if (!elementRareData()) |
| 371 | return 0; |
| 372 | return elementRareData()->activeAnimations(); |
| 373 | } |
| 374 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 375 | Node::NodeType Element::nodeType() const |
| 376 | { |
| 377 | return ELEMENT_NODE; |
| 378 | } |
| 379 | |
| 380 | bool Element::hasAttribute(const QualifiedName& name) const |
| 381 | { |
| 382 | return hasAttributeNS(name.namespaceURI(), name.localName()); |
| 383 | } |
| 384 | |
| 385 | void Element::synchronizeAllAttributes() const |
| 386 | { |
| 387 | if (!elementData()) |
| 388 | return; |
| 389 | if (elementData()->m_styleAttributeIsDirty) { |
| 390 | ASSERT(isStyledElement()); |
| 391 | static_cast<const StyledElement*>(this)->synchronizeStyleAttributeInternal(); |
| 392 | } |
| 393 | #if ENABLE(SVG) |
| 394 | if (elementData()->m_animatedSVGAttributesAreDirty) { |
| 395 | ASSERT(isSVGElement()); |
| 396 | toSVGElement(this)->synchronizeAnimatedSVGAttribute(anyQName()); |
| 397 | } |
| 398 | #endif |
| 399 | } |
| 400 | |
| 401 | inline void Element::synchronizeAttribute(const QualifiedName& name) const |
| 402 | { |
| 403 | if (!elementData()) |
| 404 | return; |
| 405 | if (UNLIKELY(name == styleAttr && elementData()->m_styleAttributeIsDirty)) { |
| 406 | ASSERT(isStyledElement()); |
| 407 | static_cast<const StyledElement*>(this)->synchronizeStyleAttributeInternal(); |
| 408 | return; |
| 409 | } |
| 410 | #if ENABLE(SVG) |
| 411 | if (UNLIKELY(elementData()->m_animatedSVGAttributesAreDirty)) { |
| 412 | ASSERT(isSVGElement()); |
| 413 | toSVGElement(this)->synchronizeAnimatedSVGAttribute(name); |
| 414 | } |
| 415 | #endif |
| 416 | } |
| 417 | |
| 418 | inline void Element::synchronizeAttribute(const AtomicString& localName) const |
| 419 | { |
| 420 | // This version of synchronizeAttribute() is streamlined for the case where you don't have a full QualifiedName, |
| 421 | // e.g when called from DOM API. |
| 422 | if (!elementData()) |
| 423 | return; |
| 424 | if (elementData()->m_styleAttributeIsDirty && equalPossiblyIgnoringCase(localName, styleAttr.localName(), shouldIgnoreAttributeCase(this))) { |
| 425 | ASSERT(isStyledElement()); |
| 426 | static_cast<const StyledElement*>(this)->synchronizeStyleAttributeInternal(); |
| 427 | return; |
| 428 | } |
| 429 | #if ENABLE(SVG) |
| 430 | if (elementData()->m_animatedSVGAttributesAreDirty) { |
| 431 | // We're not passing a namespace argument on purpose. SVGNames::*Attr are defined w/o namespaces as well. |
| 432 | ASSERT(isSVGElement()); |
| 433 | static_cast<const SVGElement*>(this)->synchronizeAnimatedSVGAttribute(QualifiedName(nullAtom, localName, nullAtom)); |
| 434 | } |
| 435 | #endif |
| 436 | } |
| 437 | |
| 438 | const AtomicString& Element::getAttribute(const QualifiedName& name) const |
| 439 | { |
| 440 | if (!elementData()) |
| 441 | return nullAtom; |
| 442 | synchronizeAttribute(name); |
| 443 | if (const Attribute* attribute = getAttributeItem(name)) |
| 444 | return attribute->value(); |
| 445 | return nullAtom; |
| 446 | } |
| 447 | |
| 448 | void Element::scrollIntoView(bool alignToTop) |
| 449 | { |
| 450 | document()->updateLayoutIgnorePendingStylesheets(); |
| 451 | |
| 452 | if (!renderer()) |
| 453 | return; |
| 454 | |
| 455 | LayoutRect bounds = boundingBox(); |
| 456 | // Align to the top / bottom and to the closest edge. |
| 457 | if (alignToTop) |
| 458 | renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignTopAlways); |
| 459 | else |
| 460 | renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignBottomAlways); |
| 461 | } |
| 462 | |
| 463 | void Element::scrollIntoViewIfNeeded(bool centerIfNeeded) |
| 464 | { |
| 465 | document()->updateLayoutIgnorePendingStylesheets(); |
| 466 | |
| 467 | if (!renderer()) |
| 468 | return; |
| 469 | |
| 470 | LayoutRect bounds = boundingBox(); |
| 471 | if (centerIfNeeded) |
| 472 | renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignCenterIfNeeded, ScrollAlignment::alignCenterIfNeeded); |
| 473 | else |
| 474 | renderer()->scrollRectToVisible(bounds, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignToEdgeIfNeeded); |
| 475 | } |
| 476 | |
| 477 | void Element::scrollByUnits(int units, ScrollGranularity granularity) |
| 478 | { |
| 479 | document()->updateLayoutIgnorePendingStylesheets(); |
| 480 | |
| 481 | if (!renderer()) |
| 482 | return; |
| 483 | |
| 484 | if (!renderer()->hasOverflowClip()) |
| 485 | return; |
| 486 | |
| 487 | ScrollDirection direction = ScrollDown; |
| 488 | if (units < 0) { |
| 489 | direction = ScrollUp; |
| 490 | units = -units; |
| 491 | } |
| 492 | Node* stopNode = this; |
| 493 | toRenderBox(renderer())->scroll(direction, granularity, units, &stopNode); |
| 494 | } |
| 495 | |
| 496 | void Element::scrollByLines(int lines) |
| 497 | { |
| 498 | scrollByUnits(lines, ScrollByLine); |
| 499 | } |
| 500 | |
| 501 | void Element::scrollByPages(int pages) |
| 502 | { |
| 503 | scrollByUnits(pages, ScrollByPage); |
| 504 | } |
| 505 | |
| 506 | static float localZoomForRenderer(RenderObject* renderer) |
| 507 | { |
| 508 | // FIXME: This does the wrong thing if two opposing zooms are in effect and canceled each |
| 509 | // other out, but the alternative is that we'd have to crawl up the whole render tree every |
| 510 | // time (or store an additional bit in the RenderStyle to indicate that a zoom was specified). |
| 511 | float zoomFactor = 1; |
| 512 | if (renderer->style()->effectiveZoom() != 1) { |
| 513 | // Need to find the nearest enclosing RenderObject that set up |
| 514 | // a differing zoom, and then we divide our result by it to eliminate the zoom. |
| 515 | RenderObject* prev = renderer; |
| 516 | for (RenderObject* curr = prev->parent(); curr; curr = curr->parent()) { |
| 517 | if (curr->style()->effectiveZoom() != prev->style()->effectiveZoom()) { |
| 518 | zoomFactor = prev->style()->zoom(); |
| 519 | break; |
| 520 | } |
| 521 | prev = curr; |
| 522 | } |
| 523 | if (prev->isRenderView()) |
| 524 | zoomFactor = prev->style()->zoom(); |
| 525 | } |
| 526 | return zoomFactor; |
| 527 | } |
| 528 | |
| 529 | static int adjustForLocalZoom(LayoutUnit value, RenderObject* renderer) |
| 530 | { |
| 531 | float zoomFactor = localZoomForRenderer(renderer); |
| 532 | if (zoomFactor == 1) |
| 533 | return value; |
| 534 | return lroundf(value / zoomFactor); |
| 535 | } |
| 536 | |
| 537 | int Element::offsetLeft() |
| 538 | { |
| 539 | document()->updateLayoutIgnorePendingStylesheets(); |
| 540 | if (RenderBoxModelObject* renderer = renderBoxModelObject()) |
| 541 | return adjustForLocalZoom(renderer->pixelSnappedOffsetLeft(), renderer); |
| 542 | return 0; |
| 543 | } |
| 544 | |
| 545 | int Element::offsetTop() |
| 546 | { |
| 547 | document()->updateLayoutIgnorePendingStylesheets(); |
| 548 | if (RenderBoxModelObject* renderer = renderBoxModelObject()) |
| 549 | return adjustForLocalZoom(renderer->pixelSnappedOffsetTop(), renderer); |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | int Element::offsetWidth() |
| 554 | { |
| 555 | document()->updateLayoutIgnorePendingStylesheets(); |
| 556 | if (RenderBoxModelObject* renderer = renderBoxModelObject()) |
| 557 | return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedOffsetWidth(), renderer).round(); |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | int Element::offsetHeight() |
| 562 | { |
| 563 | document()->updateLayoutIgnorePendingStylesheets(); |
| 564 | if (RenderBoxModelObject* renderer = renderBoxModelObject()) |
| 565 | return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedOffsetHeight(), renderer).round(); |
| 566 | return 0; |
| 567 | } |
| 568 | |
| 569 | Element* Element::bindingsOffsetParent() |
| 570 | { |
| 571 | Element* element = offsetParent(); |
| 572 | if (!element || !element->isInShadowTree()) |
| 573 | return element; |
| 574 | return element->containingShadowRoot()->type() == ShadowRoot::UserAgentShadowRoot ? 0 : element; |
| 575 | } |
| 576 | |
| 577 | Element* Element::offsetParent() |
| 578 | { |
| 579 | document()->updateLayoutIgnorePendingStylesheets(); |
| 580 | if (RenderObject* renderer = this->renderer()) |
| 581 | return renderer->offsetParent(); |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | int Element::clientLeft() |
| 586 | { |
| 587 | document()->updateLayoutIgnorePendingStylesheets(); |
| 588 | |
| 589 | if (RenderBox* renderer = renderBox()) |
| 590 | return adjustForAbsoluteZoom(roundToInt(renderer->clientLeft()), renderer); |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | int Element::clientTop() |
| 595 | { |
| 596 | document()->updateLayoutIgnorePendingStylesheets(); |
| 597 | |
| 598 | if (RenderBox* renderer = renderBox()) |
| 599 | return adjustForAbsoluteZoom(roundToInt(renderer->clientTop()), renderer); |
| 600 | return 0; |
| 601 | } |
| 602 | |
| 603 | int Element::clientWidth() |
| 604 | { |
| 605 | document()->updateLayoutIgnorePendingStylesheets(); |
| 606 | |
| 607 | // When in strict mode, clientWidth for the document element should return the width of the containing frame. |
| 608 | // When in quirks mode, clientWidth for the body element should return the width of the containing frame. |
| 609 | bool inQuirksMode = document()->inQuirksMode(); |
| 610 | if ((!inQuirksMode && document()->documentElement() == this) || |
| 611 | (inQuirksMode && isHTMLElement() && document()->body() == this)) { |
| 612 | if (FrameView* view = document()->view()) { |
| 613 | if (RenderView* renderView = document()->renderView()) |
| 614 | return adjustForAbsoluteZoom(view->layoutWidth(), renderView); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | if (RenderBox* renderer = renderBox()) |
| 619 | return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedClientWidth(), renderer).round(); |
| 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | int Element::clientHeight() |
| 624 | { |
| 625 | document()->updateLayoutIgnorePendingStylesheets(); |
| 626 | |
| 627 | // When in strict mode, clientHeight for the document element should return the height of the containing frame. |
| 628 | // When in quirks mode, clientHeight for the body element should return the height of the containing frame. |
| 629 | bool inQuirksMode = document()->inQuirksMode(); |
| 630 | |
| 631 | if ((!inQuirksMode && document()->documentElement() == this) || |
| 632 | (inQuirksMode && isHTMLElement() && document()->body() == this)) { |
| 633 | if (FrameView* view = document()->view()) { |
| 634 | if (RenderView* renderView = document()->renderView()) |
| 635 | return adjustForAbsoluteZoom(view->layoutHeight(), renderView); |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | if (RenderBox* renderer = renderBox()) |
| 640 | return adjustLayoutUnitForAbsoluteZoom(renderer->pixelSnappedClientHeight(), renderer).round(); |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | int Element::scrollLeft() |
| 645 | { |
| 646 | document()->updateLayoutIgnorePendingStylesheets(); |
| 647 | if (RenderBox* rend = renderBox()) |
| 648 | return adjustForAbsoluteZoom(rend->scrollLeft(), rend); |
| 649 | return 0; |
| 650 | } |
| 651 | |
| 652 | int Element::scrollTop() |
| 653 | { |
| 654 | document()->updateLayoutIgnorePendingStylesheets(); |
| 655 | if (RenderBox* rend = renderBox()) |
| 656 | return adjustForAbsoluteZoom(rend->scrollTop(), rend); |
| 657 | return 0; |
| 658 | } |
| 659 | |
| 660 | void Element::setScrollLeft(int newLeft) |
| 661 | { |
| 662 | document()->updateLayoutIgnorePendingStylesheets(); |
| 663 | if (RenderBox* rend = renderBox()) |
| 664 | rend->setScrollLeft(static_cast<int>(newLeft * rend->style()->effectiveZoom())); |
| 665 | } |
| 666 | |
| 667 | void Element::setScrollTop(int newTop) |
| 668 | { |
| 669 | document()->updateLayoutIgnorePendingStylesheets(); |
| 670 | if (RenderBox* rend = renderBox()) |
| 671 | rend->setScrollTop(static_cast<int>(newTop * rend->style()->effectiveZoom())); |
| 672 | } |
| 673 | |
| 674 | int Element::scrollWidth() |
| 675 | { |
| 676 | document()->updateLayoutIgnorePendingStylesheets(); |
| 677 | if (RenderBox* rend = renderBox()) |
| 678 | return adjustForAbsoluteZoom(rend->scrollWidth(), rend); |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | int Element::scrollHeight() |
| 683 | { |
| 684 | document()->updateLayoutIgnorePendingStylesheets(); |
| 685 | if (RenderBox* rend = renderBox()) |
| 686 | return adjustForAbsoluteZoom(rend->scrollHeight(), rend); |
| 687 | return 0; |
| 688 | } |
| 689 | |
| 690 | IntRect Element::boundsInRootViewSpace() |
| 691 | { |
| 692 | document()->updateLayoutIgnorePendingStylesheets(); |
| 693 | |
| 694 | FrameView* view = document()->view(); |
| 695 | if (!view) |
| 696 | return IntRect(); |
| 697 | |
| 698 | Vector<FloatQuad> quads; |
| 699 | #if ENABLE(SVG) |
| 700 | if (isSVGElement() && renderer()) { |
| 701 | // Get the bounding rectangle from the SVG model. |
| 702 | SVGElement* svgElement = toSVGElement(this); |
| 703 | FloatRect localRect; |
| 704 | if (svgElement->getBoundingBox(localRect)) |
| 705 | quads.append(renderer()->localToAbsoluteQuad(localRect)); |
| 706 | } else |
| 707 | #endif |
| 708 | { |
| 709 | // Get the bounding rectangle from the box model. |
| 710 | if (renderBoxModelObject()) |
| 711 | renderBoxModelObject()->absoluteQuads(quads); |
| 712 | } |
| 713 | |
| 714 | if (quads.isEmpty()) |
| 715 | return IntRect(); |
| 716 | |
| 717 | IntRect result = quads[0].enclosingBoundingBox(); |
| 718 | for (size_t i = 1; i < quads.size(); ++i) |
| 719 | result.unite(quads[i].enclosingBoundingBox()); |
| 720 | |
| 721 | result = view->contentsToRootView(result); |
| 722 | return result; |
| 723 | } |
| 724 | |
| 725 | PassRefPtr<ClientRectList> Element::getClientRects() |
| 726 | { |
| 727 | document()->updateLayoutIgnorePendingStylesheets(); |
| 728 | |
| 729 | RenderBoxModelObject* renderBoxModelObject = this->renderBoxModelObject(); |
| 730 | if (!renderBoxModelObject) |
| 731 | return ClientRectList::create(); |
| 732 | |
| 733 | // FIXME: Handle SVG elements. |
| 734 | // FIXME: Handle table/inline-table with a caption. |
| 735 | |
| 736 | Vector<FloatQuad> quads; |
| 737 | renderBoxModelObject->absoluteQuads(quads); |
| 738 | document()->adjustFloatQuadsForScrollAndAbsoluteZoom(quads, renderBoxModelObject); |
| 739 | return ClientRectList::create(quads); |
| 740 | } |
| 741 | |
| 742 | PassRefPtr<ClientRect> Element::getBoundingClientRect() |
| 743 | { |
| 744 | document()->updateLayoutIgnorePendingStylesheets(); |
| 745 | |
| 746 | Vector<FloatQuad> quads; |
| 747 | #if ENABLE(SVG) |
| 748 | if (isSVGElement() && renderer() && !renderer()->isSVGRoot()) { |
| 749 | // Get the bounding rectangle from the SVG model. |
| 750 | SVGElement* svgElement = toSVGElement(this); |
| 751 | FloatRect localRect; |
| 752 | if (svgElement->getBoundingBox(localRect)) |
| 753 | quads.append(renderer()->localToAbsoluteQuad(localRect)); |
| 754 | } else |
| 755 | #endif |
| 756 | { |
| 757 | // Get the bounding rectangle from the box model. |
| 758 | if (renderBoxModelObject()) |
| 759 | renderBoxModelObject()->absoluteQuads(quads); |
| 760 | } |
| 761 | |
| 762 | if (quads.isEmpty()) |
| 763 | return ClientRect::create(); |
| 764 | |
| 765 | FloatRect result = quads[0].boundingBox(); |
| 766 | for (size_t i = 1; i < quads.size(); ++i) |
| 767 | result.unite(quads[i].boundingBox()); |
| 768 | |
| 769 | document()->adjustFloatRectForScrollAndAbsoluteZoom(result, renderer()); |
| 770 | return ClientRect::create(result); |
| 771 | } |
| 772 | |
| 773 | IntRect Element::screenRect() const |
| 774 | { |
| 775 | if (!renderer()) |
| 776 | return IntRect(); |
| 777 | // FIXME: this should probably respect transforms |
| 778 | return document()->view()->contentsToScreen(renderer()->absoluteBoundingBoxRectIgnoringTransforms()); |
| 779 | } |
| 780 | |
| 781 | const AtomicString& Element::getAttribute(const AtomicString& localName) const |
| 782 | { |
| 783 | if (!elementData()) |
| 784 | return nullAtom; |
| 785 | synchronizeAttribute(localName); |
| 786 | if (const Attribute* attribute = elementData()->getAttributeItem(localName, shouldIgnoreAttributeCase(this))) |
| 787 | return attribute->value(); |
| 788 | return nullAtom; |
| 789 | } |
| 790 | |
| 791 | const AtomicString& Element::getAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) const |
| 792 | { |
| 793 | return getAttribute(QualifiedName(nullAtom, localName, namespaceURI)); |
| 794 | } |
| 795 | |
| 796 | void Element::setAttribute(const AtomicString& localName, const AtomicString& value, ExceptionCode& ec) |
| 797 | { |
| 798 | if (!Document::isValidName(localName)) { |
| 799 | ec = INVALID_CHARACTER_ERR; |
| 800 | return; |
| 801 | } |
| 802 | |
| 803 | synchronizeAttribute(localName); |
| 804 | const AtomicString& caseAdjustedLocalName = shouldIgnoreAttributeCase(this) ? localName.lower() : localName; |
| 805 | |
| 806 | size_t index = elementData() ? elementData()->getAttributeItemIndex(caseAdjustedLocalName, false) : notFound; |
| 807 | const QualifiedName& qName = index != notFound ? attributeItem(index)->name() : QualifiedName(nullAtom, caseAdjustedLocalName, nullAtom); |
| 808 | setAttributeInternal(index, qName, value, NotInSynchronizationOfLazyAttribute); |
| 809 | } |
| 810 | |
| 811 | void Element::setAttribute(const QualifiedName& name, const AtomicString& value) |
| 812 | { |
| 813 | synchronizeAttribute(name); |
| 814 | size_t index = elementData() ? elementData()->getAttributeItemIndex(name) : notFound; |
| 815 | setAttributeInternal(index, name, value, NotInSynchronizationOfLazyAttribute); |
| 816 | } |
| 817 | |
| 818 | void Element::setSynchronizedLazyAttribute(const QualifiedName& name, const AtomicString& value) |
| 819 | { |
| 820 | size_t index = elementData() ? elementData()->getAttributeItemIndex(name) : notFound; |
| 821 | setAttributeInternal(index, name, value, InSynchronizationOfLazyAttribute); |
| 822 | } |
| 823 | |
| 824 | inline void Element::setAttributeInternal(size_t index, const QualifiedName& name, const AtomicString& newValue, SynchronizationOfLazyAttribute inSynchronizationOfLazyAttribute) |
| 825 | { |
| 826 | if (newValue.isNull()) { |
| 827 | if (index != notFound) |
| 828 | removeAttributeInternal(index, inSynchronizationOfLazyAttribute); |
| 829 | return; |
| 830 | } |
| 831 | |
| 832 | if (index == notFound) { |
| 833 | addAttributeInternal(name, newValue, inSynchronizationOfLazyAttribute); |
| 834 | return; |
| 835 | } |
| 836 | |
| 837 | if (!inSynchronizationOfLazyAttribute) |
| 838 | willModifyAttribute(name, attributeItem(index)->value(), newValue); |
| 839 | |
| 840 | if (newValue != attributeItem(index)->value()) { |
| 841 | // If there is an Attr node hooked to this attribute, the Attr::setValue() call below |
| 842 | // will write into the ElementData. |
| 843 | // FIXME: Refactor this so it makes some sense. |
| 844 | if (RefPtr<Attr> attrNode = inSynchronizationOfLazyAttribute ? 0 : attrIfExists(name)) |
| 845 | attrNode->setValue(newValue); |
| 846 | else |
| 847 | ensureUniqueElementData()->attributeItem(index)->setValue(newValue); |
| 848 | } |
| 849 | |
| 850 | if (!inSynchronizationOfLazyAttribute) |
| 851 | didModifyAttribute(name, newValue); |
| 852 | } |
| 853 | |
| 854 | static inline AtomicString makeIdForStyleResolution(const AtomicString& value, bool inQuirksMode) |
| 855 | { |
| 856 | if (inQuirksMode) |
| 857 | return value.lower(); |
| 858 | return value; |
| 859 | } |
| 860 | |
| 861 | static bool checkNeedsStyleInvalidationForIdChange(const AtomicString& oldId, const AtomicString& newId, StyleResolver* styleResolver) |
| 862 | { |
| 863 | ASSERT(newId != oldId); |
| 864 | if (!oldId.isEmpty() && styleResolver->hasSelectorForId(oldId)) |
| 865 | return true; |
| 866 | if (!newId.isEmpty() && styleResolver->hasSelectorForId(newId)) |
| 867 | return true; |
| 868 | return false; |
| 869 | } |
| 870 | |
| 871 | void Element::attributeChanged(const QualifiedName& name, const AtomicString& newValue, AttributeModificationReason) |
| 872 | { |
| 873 | if (ElementShadow* parentElementShadow = shadowOfParentForDistribution(this)) { |
| 874 | if (shouldInvalidateDistributionWhenAttributeChanged(parentElementShadow, name, newValue)) |
| 875 | parentElementShadow->invalidateDistribution(); |
| 876 | } |
| 877 | |
| 878 | parseAttribute(name, newValue); |
| 879 | |
| 880 | document()->incDOMTreeVersion(); |
| 881 | |
| 882 | StyleResolver* styleResolver = document()->styleResolverIfExists(); |
| 883 | bool testShouldInvalidateStyle = attached() && styleResolver && styleChangeType() < FullStyleChange; |
| 884 | bool shouldInvalidateStyle = false; |
| 885 | |
| 886 | if (isIdAttributeName(name)) { |
| 887 | AtomicString oldId = elementData()->idForStyleResolution(); |
| 888 | AtomicString newId = makeIdForStyleResolution(newValue, document()->inQuirksMode()); |
| 889 | if (newId != oldId) { |
| 890 | elementData()->setIdForStyleResolution(newId); |
| 891 | shouldInvalidateStyle = testShouldInvalidateStyle && checkNeedsStyleInvalidationForIdChange(oldId, newId, styleResolver); |
| 892 | } |
| 893 | } else if (name == classAttr) |
| 894 | classAttributeChanged(newValue); |
| 895 | else if (name == HTMLNames::nameAttr) |
| 896 | setHasName(!newValue.isNull()); |
| 897 | else if (name == HTMLNames::pseudoAttr) |
| 898 | shouldInvalidateStyle |= testShouldInvalidateStyle && isInShadowTree(); |
| 899 | |
| 900 | invalidateNodeListCachesInAncestors(&name, this); |
| 901 | |
| 902 | // If there is currently no StyleResolver, we can't be sure that this attribute change won't affect style. |
| 903 | shouldInvalidateStyle |= !styleResolver; |
| 904 | |
| 905 | if (shouldInvalidateStyle) |
| 906 | setNeedsStyleRecalc(); |
| 907 | |
| 908 | if (AXObjectCache* cache = document()->existingAXObjectCache()) |
| 909 | cache->handleAttributeChanged(name, this); |
| 910 | } |
| 911 | |
| 912 | inline void Element::attributeChangedFromParserOrByCloning(const QualifiedName& name, const AtomicString& newValue, AttributeModificationReason reason) |
| 913 | { |
| 914 | if (RuntimeEnabledFeatures::customDOMElementsEnabled() && name == isAttr) { |
| 915 | document()->ensureCustomElementRegistry()->didGiveTypeExtension(this, newValue); |
| 916 | } |
| 917 | attributeChanged(name, newValue, reason); |
| 918 | } |
| 919 | |
| 920 | template <typename CharacterType> |
| 921 | static inline bool classStringHasClassName(const CharacterType* characters, unsigned length) |
| 922 | { |
| 923 | ASSERT(length > 0); |
| 924 | |
| 925 | unsigned i = 0; |
| 926 | do { |
| 927 | if (isNotHTMLSpace(characters[i])) |
| 928 | break; |
| 929 | ++i; |
| 930 | } while (i < length); |
| 931 | |
| 932 | return i < length; |
| 933 | } |
| 934 | |
| 935 | static inline bool classStringHasClassName(const AtomicString& newClassString) |
| 936 | { |
| 937 | unsigned length = newClassString.length(); |
| 938 | |
| 939 | if (!length) |
| 940 | return false; |
| 941 | |
| 942 | if (newClassString.is8Bit()) |
| 943 | return classStringHasClassName(newClassString.characters8(), length); |
| 944 | return classStringHasClassName(newClassString.characters16(), length); |
| 945 | } |
| 946 | |
| 947 | template<typename Checker> |
| 948 | static bool checkSelectorForClassChange(const SpaceSplitString& changedClasses, const Checker& checker) |
| 949 | { |
| 950 | unsigned changedSize = changedClasses.size(); |
| 951 | for (unsigned i = 0; i < changedSize; ++i) { |
| 952 | if (checker.hasSelectorForClass(changedClasses[i])) |
| 953 | return true; |
| 954 | } |
| 955 | return false; |
| 956 | } |
| 957 | |
| 958 | template<typename Checker> |
| 959 | static bool checkSelectorForClassChange(const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses, const Checker& checker) |
| 960 | { |
| 961 | unsigned oldSize = oldClasses.size(); |
| 962 | if (!oldSize) |
| 963 | return checkSelectorForClassChange(newClasses, checker); |
| 964 | BitVector remainingClassBits; |
| 965 | remainingClassBits.ensureSize(oldSize); |
| 966 | // Class vectors tend to be very short. This is faster than using a hash table. |
| 967 | unsigned newSize = newClasses.size(); |
| 968 | for (unsigned i = 0; i < newSize; ++i) { |
| 969 | for (unsigned j = 0; j < oldSize; ++j) { |
| 970 | if (newClasses[i] == oldClasses[j]) { |
| 971 | remainingClassBits.quickSet(j); |
| 972 | continue; |
| 973 | } |
| 974 | } |
| 975 | if (checker.hasSelectorForClass(newClasses[i])) |
| 976 | return true; |
| 977 | } |
| 978 | for (unsigned i = 0; i < oldSize; ++i) { |
| 979 | // If the bit is not set the the corresponding class has been removed. |
| 980 | if (remainingClassBits.quickGet(i)) |
| 981 | continue; |
| 982 | if (checker.hasSelectorForClass(oldClasses[i])) |
| 983 | return true; |
| 984 | } |
| 985 | return false; |
| 986 | } |
| 987 | |
| 988 | void Element::classAttributeChanged(const AtomicString& newClassString) |
| 989 | { |
| 990 | StyleResolver* styleResolver = document()->styleResolverIfExists(); |
| 991 | bool testShouldInvalidateStyle = attached() && styleResolver && styleChangeType() < FullStyleChange; |
| 992 | bool shouldInvalidateStyle = false; |
| 993 | |
| 994 | if (classStringHasClassName(newClassString)) { |
| 995 | const bool shouldFoldCase = document()->inQuirksMode(); |
| 996 | const SpaceSplitString oldClasses = elementData()->classNames(); |
| 997 | elementData()->setClass(newClassString, shouldFoldCase); |
| 998 | const SpaceSplitString& newClasses = elementData()->classNames(); |
| 999 | shouldInvalidateStyle = testShouldInvalidateStyle && checkSelectorForClassChange(oldClasses, newClasses, *styleResolver); |
| 1000 | } else { |
| 1001 | const SpaceSplitString& oldClasses = elementData()->classNames(); |
| 1002 | shouldInvalidateStyle = testShouldInvalidateStyle && checkSelectorForClassChange(oldClasses, *styleResolver); |
| 1003 | elementData()->clearClass(); |
| 1004 | } |
| 1005 | |
| 1006 | if (hasRareData()) |
| 1007 | elementRareData()->clearClassListValueForQuirksMode(); |
| 1008 | |
| 1009 | if (shouldInvalidateStyle) |
| 1010 | setNeedsStyleRecalc(); |
| 1011 | } |
| 1012 | |
| 1013 | bool Element::shouldInvalidateDistributionWhenAttributeChanged(ElementShadow* elementShadow, const QualifiedName& name, const AtomicString& newValue) |
| 1014 | { |
| 1015 | ASSERT(elementShadow); |
| 1016 | const SelectRuleFeatureSet& featureSet = elementShadow->distributor().ensureSelectFeatureSet(elementShadow); |
| 1017 | |
| 1018 | if (isIdAttributeName(name)) { |
| 1019 | AtomicString oldId = elementData()->idForStyleResolution(); |
| 1020 | AtomicString newId = makeIdForStyleResolution(newValue, document()->inQuirksMode()); |
| 1021 | if (newId != oldId) { |
| 1022 | if (!oldId.isEmpty() && featureSet.hasSelectorForId(oldId)) |
| 1023 | return true; |
| 1024 | if (!newId.isEmpty() && featureSet.hasSelectorForId(newId)) |
| 1025 | return true; |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | if (name == HTMLNames::classAttr) { |
| 1030 | const AtomicString& newClassString = newValue; |
| 1031 | if (classStringHasClassName(newClassString)) { |
| 1032 | const bool shouldFoldCase = document()->inQuirksMode(); |
| 1033 | const SpaceSplitString& oldClasses = elementData()->classNames(); |
| 1034 | const SpaceSplitString newClasses(newClassString, shouldFoldCase); |
| 1035 | if (checkSelectorForClassChange(oldClasses, newClasses, featureSet)) |
| 1036 | return true; |
| 1037 | } else { |
| 1038 | const SpaceSplitString& oldClasses = elementData()->classNames(); |
| 1039 | if (checkSelectorForClassChange(oldClasses, featureSet)) |
| 1040 | return true; |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | return featureSet.hasSelectorForAttribute(name.localName()); |
| 1045 | } |
| 1046 | |
| 1047 | // Returns true is the given attribute is an event handler. |
| 1048 | // We consider an event handler any attribute that begins with "on". |
| 1049 | // It is a simple solution that has the advantage of not requiring any |
| 1050 | // code or configuration change if a new event handler is defined. |
| 1051 | |
| 1052 | static inline bool isEventHandlerAttribute(const Attribute& attribute) |
| 1053 | { |
| 1054 | return attribute.name().namespaceURI().isNull() && attribute.name().localName().startsWith("on"); |
| 1055 | } |
| 1056 | |
| 1057 | bool Element::isJavaScriptURLAttribute(const Attribute& attribute) const |
| 1058 | { |
| 1059 | return isURLAttribute(attribute) && protocolIsJavaScript(stripLeadingAndTrailingHTMLSpaces(attribute.value())); |
| 1060 | } |
| 1061 | |
| 1062 | void Element::stripScriptingAttributes(Vector<Attribute>& attributeVector) const |
| 1063 | { |
| 1064 | size_t destination = 0; |
| 1065 | for (size_t source = 0; source < attributeVector.size(); ++source) { |
| 1066 | if (isEventHandlerAttribute(attributeVector[source]) |
| 1067 | || isJavaScriptURLAttribute(attributeVector[source]) |
| 1068 | || isHTMLContentAttribute(attributeVector[source])) |
| 1069 | continue; |
| 1070 | |
| 1071 | if (source != destination) |
| 1072 | attributeVector[destination] = attributeVector[source]; |
| 1073 | |
| 1074 | ++destination; |
| 1075 | } |
| 1076 | attributeVector.shrink(destination); |
| 1077 | } |
| 1078 | |
| 1079 | void Element::parserSetAttributes(const Vector<Attribute>& attributeVector) |
| 1080 | { |
| 1081 | ASSERT(!inDocument()); |
| 1082 | ASSERT(!parentNode()); |
| 1083 | ASSERT(!m_elementData); |
| 1084 | |
| 1085 | if (attributeVector.isEmpty()) |
| 1086 | return; |
| 1087 | |
| 1088 | if (document() && document()->sharedObjectPool()) |
| 1089 | m_elementData = document()->sharedObjectPool()->cachedShareableElementDataWithAttributes(attributeVector); |
| 1090 | else |
| 1091 | m_elementData = ShareableElementData::createWithAttributes(attributeVector); |
| 1092 | |
| 1093 | // Use attributeVector instead of m_elementData because attributeChanged might modify m_elementData. |
| 1094 | for (unsigned i = 0; i < attributeVector.size(); ++i) |
| 1095 | attributeChangedFromParserOrByCloning(attributeVector[i].name(), attributeVector[i].value(), ModifiedDirectly); |
| 1096 | } |
| 1097 | |
| 1098 | bool Element::hasAttributes() const |
| 1099 | { |
| 1100 | synchronizeAllAttributes(); |
| 1101 | return elementData() && elementData()->length(); |
| 1102 | } |
| 1103 | |
| 1104 | bool Element::hasEquivalentAttributes(const Element* other) const |
| 1105 | { |
| 1106 | synchronizeAllAttributes(); |
| 1107 | other->synchronizeAllAttributes(); |
| 1108 | if (elementData() == other->elementData()) |
| 1109 | return true; |
| 1110 | if (elementData()) |
| 1111 | return elementData()->isEquivalent(other->elementData()); |
| 1112 | if (other->elementData()) |
| 1113 | return other->elementData()->isEquivalent(elementData()); |
| 1114 | return true; |
| 1115 | } |
| 1116 | |
| 1117 | String Element::nodeName() const |
| 1118 | { |
| 1119 | return m_tagName.toString(); |
| 1120 | } |
| 1121 | |
| 1122 | String Element::nodeNamePreservingCase() const |
| 1123 | { |
| 1124 | return m_tagName.toString(); |
| 1125 | } |
| 1126 | |
| 1127 | void Element::setPrefix(const AtomicString& prefix, ExceptionCode& ec) |
| 1128 | { |
| 1129 | ec = 0; |
| 1130 | checkSetPrefix(prefix, ec); |
| 1131 | if (ec) |
| 1132 | return; |
| 1133 | |
| 1134 | m_tagName.setPrefix(prefix.isEmpty() ? AtomicString() : prefix); |
| 1135 | } |
| 1136 | |
| 1137 | KURL Element::baseURI() const |
| 1138 | { |
| 1139 | const AtomicString& baseAttribute = getAttribute(baseAttr); |
| 1140 | KURL base(KURL(), baseAttribute); |
| 1141 | if (!base.protocol().isEmpty()) |
| 1142 | return base; |
| 1143 | |
| 1144 | ContainerNode* parent = parentNode(); |
| 1145 | if (!parent) |
| 1146 | return base; |
| 1147 | |
| 1148 | const KURL& parentBase = parent->baseURI(); |
| 1149 | if (parentBase.isNull()) |
| 1150 | return base; |
| 1151 | |
| 1152 | return KURL(parentBase, baseAttribute); |
| 1153 | } |
| 1154 | |
| 1155 | const AtomicString& Element::imageSourceURL() const |
| 1156 | { |
| 1157 | return getAttribute(srcAttr); |
| 1158 | } |
| 1159 | |
| 1160 | bool Element::rendererIsNeeded(const NodeRenderingContext& context) |
| 1161 | { |
| 1162 | return context.style()->display() != NONE; |
| 1163 | } |
| 1164 | |
| 1165 | RenderObject* Element::createRenderer(RenderArena*, RenderStyle* style) |
| 1166 | { |
| 1167 | return RenderObject::createObject(this, style); |
| 1168 | } |
| 1169 | |
| 1170 | #if ENABLE(INPUT_MULTIPLE_FIELDS_UI) |
| 1171 | bool Element::isDateTimeFieldElement() const |
| 1172 | { |
| 1173 | return false; |
| 1174 | } |
| 1175 | #endif |
| 1176 | |
| 1177 | bool Element::wasChangedSinceLastFormControlChangeEvent() const |
| 1178 | { |
| 1179 | return false; |
| 1180 | } |
| 1181 | |
| 1182 | void Element::setChangedSinceLastFormControlChangeEvent(bool) |
| 1183 | { |
| 1184 | } |
| 1185 | |
| 1186 | bool Element::isDisabledFormControl() const |
| 1187 | { |
| 1188 | // FIXME: disabled and inert are separate concepts in the spec, but now we treat them as the same. |
| 1189 | // For example, an inert, non-disabled form control should not be grayed out. |
| 1190 | if (isInert()) |
| 1191 | return true; |
| 1192 | return false; |
| 1193 | } |
| 1194 | |
| 1195 | bool Element::isInert() const |
| 1196 | { |
| 1197 | Element* dialog = document()->activeModalDialog(); |
| 1198 | return dialog && !containsIncludingShadowDOM(dialog) && !dialog->containsIncludingShadowDOM(this); |
| 1199 | } |
| 1200 | |
| 1201 | Node::InsertionNotificationRequest Element::insertedInto(ContainerNode* insertionPoint) |
| 1202 | { |
| 1203 | // need to do superclass processing first so inDocument() is true |
| 1204 | // by the time we reach updateId |
| 1205 | ContainerNode::insertedInto(insertionPoint); |
| 1206 | |
| 1207 | if (containsFullScreenElement() && parentElement() && !parentElement()->containsFullScreenElement()) |
| 1208 | setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(true); |
| 1209 | |
| 1210 | if (Element* before = pseudoElement(BEFORE)) |
| 1211 | before->insertedInto(insertionPoint); |
| 1212 | |
| 1213 | if (Element* after = pseudoElement(AFTER)) |
| 1214 | after->insertedInto(insertionPoint); |
| 1215 | |
| 1216 | if (!insertionPoint->isInTreeScope()) |
| 1217 | return InsertionDone; |
| 1218 | |
| 1219 | if (hasRareData()) |
| 1220 | elementRareData()->clearClassListValueForQuirksMode(); |
| 1221 | |
| 1222 | TreeScope* scope = insertionPoint->treeScope(); |
| 1223 | if (scope != treeScope()) |
| 1224 | return InsertionDone; |
| 1225 | |
| 1226 | const AtomicString& idValue = getIdAttribute(); |
| 1227 | if (!idValue.isNull()) |
| 1228 | updateId(scope, nullAtom, idValue); |
| 1229 | |
| 1230 | const AtomicString& nameValue = getNameAttribute(); |
| 1231 | if (!nameValue.isNull()) |
| 1232 | updateName(nullAtom, nameValue); |
| 1233 | |
| 1234 | if (hasTagName(labelTag)) { |
| 1235 | if (scope->shouldCacheLabelsByForAttribute()) |
| 1236 | updateLabel(scope, nullAtom, fastGetAttribute(forAttr)); |
| 1237 | } |
| 1238 | |
| 1239 | return InsertionDone; |
| 1240 | } |
| 1241 | |
| 1242 | void Element::removedFrom(ContainerNode* insertionPoint) |
| 1243 | { |
| 1244 | #if ENABLE(SVG) |
| 1245 | bool wasInDocument = insertionPoint->document(); |
| 1246 | #endif |
| 1247 | |
| 1248 | if (Element* before = pseudoElement(BEFORE)) |
| 1249 | before->removedFrom(insertionPoint); |
| 1250 | |
| 1251 | if (Element* after = pseudoElement(AFTER)) |
| 1252 | after->removedFrom(insertionPoint); |
| 1253 | |
| 1254 | document()->removeFromTopLayer(this); |
| 1255 | if (containsFullScreenElement()) |
| 1256 | setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(false); |
| 1257 | |
| 1258 | if (document()->page()) |
| 1259 | document()->page()->pointerLockController()->elementRemoved(this); |
| 1260 | |
| 1261 | setSavedLayerScrollOffset(IntSize()); |
| 1262 | |
| 1263 | if (insertionPoint->isInTreeScope() && treeScope() == document()) { |
| 1264 | const AtomicString& idValue = getIdAttribute(); |
| 1265 | if (!idValue.isNull()) |
| 1266 | updateId(insertionPoint->treeScope(), idValue, nullAtom); |
| 1267 | |
| 1268 | const AtomicString& nameValue = getNameAttribute(); |
| 1269 | if (!nameValue.isNull()) |
| 1270 | updateName(nameValue, nullAtom); |
| 1271 | |
| 1272 | if (hasTagName(labelTag)) { |
| 1273 | TreeScope* treeScope = insertionPoint->treeScope(); |
| 1274 | if (treeScope->shouldCacheLabelsByForAttribute()) |
| 1275 | updateLabel(treeScope, fastGetAttribute(forAttr), nullAtom); |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | ContainerNode::removedFrom(insertionPoint); |
| 1280 | #if ENABLE(SVG) |
| 1281 | if (wasInDocument && hasPendingResources()) |
| 1282 | document()->accessSVGExtensions()->removeElementFromPendingResources(this); |
| 1283 | #endif |
| 1284 | } |
| 1285 | |
| 1286 | void Element::createRendererIfNeeded() |
| 1287 | { |
| 1288 | NodeRenderingContext(this).createRendererForElementIfNeeded(); |
| 1289 | } |
| 1290 | |
| 1291 | void Element::attach() |
| 1292 | { |
| 1293 | PostAttachCallbackDisabler callbackDisabler(this); |
| 1294 | StyleResolverParentPusher parentPusher(this); |
| 1295 | WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; |
| 1296 | |
| 1297 | createRendererIfNeeded(); |
| 1298 | |
| 1299 | if (parentElement() && parentElement()->isInCanvasSubtree()) |
| 1300 | setIsInCanvasSubtree(true); |
| 1301 | |
| 1302 | createPseudoElementIfNeeded(BEFORE); |
| 1303 | |
| 1304 | // When a shadow root exists, it does the work of attaching the children. |
| 1305 | if (ElementShadow* shadow = this->shadow()) { |
| 1306 | parentPusher.push(); |
| 1307 | shadow->attach(); |
| 1308 | } else if (firstChild()) |
| 1309 | parentPusher.push(); |
| 1310 | |
| 1311 | ContainerNode::attach(); |
| 1312 | |
| 1313 | createPseudoElementIfNeeded(AFTER); |
| 1314 | |
| 1315 | if (hasRareData()) { |
| 1316 | ElementRareData* data = elementRareData(); |
| 1317 | if (data->needsFocusAppearanceUpdateSoonAfterAttach()) { |
| 1318 | if (isFocusable() && document()->focusedNode() == this) |
| 1319 | document()->updateFocusAppearanceSoon(false /* don't restore selection */); |
| 1320 | data->setNeedsFocusAppearanceUpdateSoonAfterAttach(false); |
| 1321 | } |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | void Element::unregisterNamedFlowContentNode() |
| 1326 | { |
| 1327 | if (RuntimeEnabledFeatures::cssRegionsEnabled() && inNamedFlow() && document()->renderView()) |
| 1328 | document()->renderView()->flowThreadController()->unregisterNamedFlowContentNode(this); |
| 1329 | } |
| 1330 | |
| 1331 | void Element::detach() |
| 1332 | { |
| 1333 | WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; |
| 1334 | unregisterNamedFlowContentNode(); |
| 1335 | cancelFocusAppearanceUpdate(); |
| 1336 | if (hasRareData()) { |
| 1337 | ElementRareData* data = elementRareData(); |
| 1338 | data->setPseudoElement(BEFORE, 0); |
| 1339 | data->setPseudoElement(AFTER, 0); |
| 1340 | data->setIsInCanvasSubtree(false); |
| 1341 | data->resetComputedStyle(); |
| 1342 | data->resetDynamicRestyleObservations(); |
| 1343 | } |
| 1344 | |
| 1345 | if (ElementShadow* shadow = this->shadow()) { |
| 1346 | detachChildrenIfNeeded(); |
| 1347 | shadow->detach(); |
| 1348 | } |
| 1349 | ContainerNode::detach(); |
| 1350 | } |
| 1351 | |
| 1352 | bool Element::pseudoStyleCacheIsInvalid(const RenderStyle* currentStyle, RenderStyle* newStyle) |
| 1353 | { |
| 1354 | ASSERT(currentStyle == renderStyle()); |
| 1355 | ASSERT(renderer()); |
| 1356 | |
| 1357 | if (!currentStyle) |
| 1358 | return false; |
| 1359 | |
| 1360 | const PseudoStyleCache* pseudoStyleCache = currentStyle->cachedPseudoStyles(); |
| 1361 | if (!pseudoStyleCache) |
| 1362 | return false; |
| 1363 | |
| 1364 | size_t cacheSize = pseudoStyleCache->size(); |
| 1365 | for (size_t i = 0; i < cacheSize; ++i) { |
| 1366 | RefPtr<RenderStyle> newPseudoStyle; |
| 1367 | PseudoId pseudoId = pseudoStyleCache->at(i)->styleType(); |
| 1368 | if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) |
| 1369 | newPseudoStyle = renderer()->uncachedFirstLineStyle(newStyle); |
| 1370 | else |
| 1371 | newPseudoStyle = renderer()->getUncachedPseudoStyle(PseudoStyleRequest(pseudoId), newStyle, newStyle); |
| 1372 | if (!newPseudoStyle) |
| 1373 | return true; |
| 1374 | if (*newPseudoStyle != *pseudoStyleCache->at(i)) { |
| 1375 | if (pseudoId < FIRST_INTERNAL_PSEUDOID) |
| 1376 | newStyle->setHasPseudoStyle(pseudoId); |
| 1377 | newStyle->addCachedPseudoStyle(newPseudoStyle); |
| 1378 | if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) { |
| 1379 | // FIXME: We should do an actual diff to determine whether a repaint vs. layout |
| 1380 | // is needed, but for now just assume a layout will be required. The diff code |
| 1381 | // in RenderObject::setStyle would need to be factored out so that it could be reused. |
| 1382 | renderer()->setNeedsLayoutAndPrefWidthsRecalc(); |
| 1383 | } |
| 1384 | return true; |
| 1385 | } |
| 1386 | } |
| 1387 | return false; |
| 1388 | } |
| 1389 | |
| 1390 | PassRefPtr<RenderStyle> Element::styleForRenderer() |
| 1391 | { |
| 1392 | if (hasCustomStyleCallbacks()) { |
| 1393 | if (RefPtr<RenderStyle> style = customStyleForRenderer()) |
| 1394 | return style.release(); |
| 1395 | } |
| 1396 | |
| 1397 | return document()->styleResolver()->styleForElement(this); |
| 1398 | } |
| 1399 | |
| 1400 | void Element::recalcStyle(StyleChange change) |
| 1401 | { |
| 1402 | if (hasCustomStyleCallbacks()) |
| 1403 | willRecalcStyle(change); |
| 1404 | |
| 1405 | // Ref currentStyle in case it would otherwise be deleted when setting the new style in the renderer. |
| 1406 | RefPtr<RenderStyle> currentStyle(renderStyle()); |
| 1407 | bool hasParentStyle = parentNodeForRenderingAndStyle() ? static_cast<bool>(parentNodeForRenderingAndStyle()->renderStyle()) : false; |
| 1408 | bool hasDirectAdjacentRules = childrenAffectedByDirectAdjacentRules(); |
| 1409 | bool hasIndirectAdjacentRules = childrenAffectedByForwardPositionalRules(); |
| 1410 | |
| 1411 | if ((change > NoChange || needsStyleRecalc())) { |
| 1412 | if (hasRareData()) |
| 1413 | elementRareData()->resetComputedStyle(); |
| 1414 | } |
| 1415 | if (hasParentStyle && (change >= Inherit || needsStyleRecalc())) { |
| 1416 | StyleChange localChange = Detach; |
| 1417 | RefPtr<RenderStyle> newStyle; |
| 1418 | if (currentStyle) { |
| 1419 | // FIXME: This still recalcs style twice when changing display types, but saves |
| 1420 | // us from recalcing twice when going from none -> anything else which is more |
| 1421 | // common, especially during lazy attach. |
| 1422 | newStyle = styleForRenderer(); |
| 1423 | localChange = Node::diff(currentStyle.get(), newStyle.get(), document()); |
| 1424 | } |
| 1425 | if (localChange == Detach) { |
| 1426 | // FIXME: The style gets computed twice by calling attach. We could do better if we passed the style along. |
| 1427 | reattach(); |
| 1428 | // attach recalculates the style for all children. No need to do it twice. |
| 1429 | clearNeedsStyleRecalc(); |
| 1430 | clearChildNeedsStyleRecalc(); |
| 1431 | |
| 1432 | if (hasCustomStyleCallbacks()) |
| 1433 | didRecalcStyle(change); |
| 1434 | return; |
| 1435 | } |
| 1436 | |
| 1437 | if (RenderObject* renderer = this->renderer()) { |
| 1438 | if (localChange != NoChange || pseudoStyleCacheIsInvalid(currentStyle.get(), newStyle.get()) || (change == Force && renderer->requiresForcedStyleRecalcPropagation()) || styleChangeType() == SyntheticStyleChange) |
| 1439 | renderer->setAnimatableStyle(newStyle.get()); |
| 1440 | else if (needsStyleRecalc()) { |
| 1441 | // Although no change occurred, we use the new style so that the cousin style sharing code won't get |
| 1442 | // fooled into believing this style is the same. |
| 1443 | renderer->setStyleInternal(newStyle.get()); |
| 1444 | } |
| 1445 | } |
| 1446 | |
| 1447 | // If "rem" units are used anywhere in the document, and if the document element's font size changes, then go ahead and force font updating |
| 1448 | // all the way down the tree. This is simpler than having to maintain a cache of objects (and such font size changes should be rare anyway). |
| 1449 | if (document()->styleSheetCollection()->usesRemUnits() && document()->documentElement() == this && localChange != NoChange && currentStyle && newStyle && currentStyle->fontSize() != newStyle->fontSize()) { |
| 1450 | // Cached RenderStyles may depend on the re units. |
| 1451 | document()->styleResolver()->invalidateMatchedPropertiesCache(); |
| 1452 | change = Force; |
| 1453 | } |
| 1454 | |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 1455 | if (styleChangeType() == FullStyleChange) |
| 1456 | change = Force; |
| 1457 | else if (change != Force) |
| 1458 | change = localChange; |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1459 | } |
| 1460 | StyleResolverParentPusher parentPusher(this); |
| 1461 | |
| 1462 | // FIXME: This does not care about sibling combinators. Will be necessary in XBL2 world. |
| 1463 | if (ElementShadow* shadow = this->shadow()) { |
| 1464 | if (shouldRecalcStyle(change, shadow)) { |
| 1465 | parentPusher.push(); |
| 1466 | shadow->recalcStyle(change); |
| 1467 | } |
| 1468 | } |
| 1469 | |
| 1470 | if (shouldRecalcStyle(change, this)) |
| 1471 | updatePseudoElement(BEFORE, change); |
| 1472 | |
| 1473 | // FIXME: This check is good enough for :hover + foo, but it is not good enough for :hover + foo + bar. |
| 1474 | // For now we will just worry about the common case, since it's a lot trickier to get the second case right |
| 1475 | // without doing way too much re-resolution. |
| 1476 | bool forceCheckOfNextElementSibling = false; |
| 1477 | bool forceCheckOfAnyElementSibling = false; |
| 1478 | for (Node *n = firstChild(); n; n = n->nextSibling()) { |
| 1479 | if (n->isTextNode()) { |
| 1480 | toText(n)->recalcTextStyle(change); |
| 1481 | continue; |
| 1482 | } |
| 1483 | if (!n->isElementNode()) |
| 1484 | continue; |
| 1485 | Element* element = toElement(n); |
| 1486 | bool childRulesChanged = element->needsStyleRecalc() && element->styleChangeType() == FullStyleChange; |
| 1487 | if ((forceCheckOfNextElementSibling || forceCheckOfAnyElementSibling)) |
| 1488 | element->setNeedsStyleRecalc(); |
| 1489 | if (shouldRecalcStyle(change, element)) { |
| 1490 | parentPusher.push(); |
| 1491 | element->recalcStyle(change); |
| 1492 | } |
| 1493 | forceCheckOfNextElementSibling = childRulesChanged && hasDirectAdjacentRules; |
| 1494 | forceCheckOfAnyElementSibling = forceCheckOfAnyElementSibling || (childRulesChanged && hasIndirectAdjacentRules); |
| 1495 | } |
| 1496 | |
| 1497 | if (shouldRecalcStyle(change, this)) |
| 1498 | updatePseudoElement(AFTER, change); |
| 1499 | |
| 1500 | clearNeedsStyleRecalc(); |
| 1501 | clearChildNeedsStyleRecalc(); |
| 1502 | |
| 1503 | if (hasCustomStyleCallbacks()) |
| 1504 | didRecalcStyle(change); |
| 1505 | InspectorInstrumentation::didRecalculateStyleForElement(this); |
| 1506 | } |
| 1507 | |
| 1508 | ElementShadow* Element::shadow() const |
| 1509 | { |
| 1510 | return hasRareData() ? elementRareData()->shadow() : 0; |
| 1511 | } |
| 1512 | |
| 1513 | ElementShadow* Element::ensureShadow() |
| 1514 | { |
| 1515 | return ensureElementRareData()->ensureShadow(); |
| 1516 | } |
| 1517 | |
| 1518 | void Element::didAffectSelector(AffectedSelectorMask mask) |
| 1519 | { |
| 1520 | setNeedsStyleRecalc(); |
| 1521 | if (ElementShadow* elementShadow = shadowOfParentForDistribution(this)) |
| 1522 | elementShadow->didAffectSelector(mask); |
| 1523 | } |
| 1524 | |
| 1525 | PassRefPtr<ShadowRoot> Element::createShadowRoot(ExceptionCode& ec) |
| 1526 | { |
| 1527 | if (alwaysCreateUserAgentShadowRoot()) |
| 1528 | ensureUserAgentShadowRoot(); |
| 1529 | |
| 1530 | if (RuntimeEnabledFeatures::authorShadowDOMForAnyElementEnabled()) |
| 1531 | return ensureShadow()->addShadowRoot(this, ShadowRoot::AuthorShadowRoot); |
| 1532 | |
| 1533 | // Since some elements recreates shadow root dynamically, multiple shadow |
| 1534 | // subtrees won't work well in that element. Until they are fixed, we disable |
| 1535 | // adding author shadow root for them. |
| 1536 | if (!areAuthorShadowsAllowed()) { |
| 1537 | ec = HIERARCHY_REQUEST_ERR; |
| 1538 | return 0; |
| 1539 | } |
| 1540 | return ensureShadow()->addShadowRoot(this, ShadowRoot::AuthorShadowRoot); |
| 1541 | } |
| 1542 | |
| 1543 | ShadowRoot* Element::shadowRoot() const |
| 1544 | { |
| 1545 | ElementShadow* elementShadow = shadow(); |
| 1546 | if (!elementShadow) |
| 1547 | return 0; |
| 1548 | ShadowRoot* shadowRoot = elementShadow->youngestShadowRoot(); |
| 1549 | if (shadowRoot->type() == ShadowRoot::AuthorShadowRoot) |
| 1550 | return shadowRoot; |
| 1551 | return 0; |
| 1552 | } |
| 1553 | |
| 1554 | ShadowRoot* Element::userAgentShadowRoot() const |
| 1555 | { |
| 1556 | if (ElementShadow* elementShadow = shadow()) { |
| 1557 | if (ShadowRoot* shadowRoot = elementShadow->oldestShadowRoot()) { |
| 1558 | ASSERT(shadowRoot->type() == ShadowRoot::UserAgentShadowRoot); |
| 1559 | return shadowRoot; |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | return 0; |
| 1564 | } |
| 1565 | |
| 1566 | ShadowRoot* Element::ensureUserAgentShadowRoot() |
| 1567 | { |
| 1568 | if (ShadowRoot* shadowRoot = userAgentShadowRoot()) |
| 1569 | return shadowRoot; |
| 1570 | ShadowRoot* shadowRoot = ensureShadow()->addShadowRoot(this, ShadowRoot::UserAgentShadowRoot); |
| 1571 | didAddUserAgentShadowRoot(shadowRoot); |
| 1572 | return shadowRoot; |
| 1573 | } |
| 1574 | |
| 1575 | const AtomicString& Element::shadowPseudoId() const |
| 1576 | { |
| 1577 | return pseudo(); |
| 1578 | } |
| 1579 | |
| 1580 | bool Element::childTypeAllowed(NodeType type) const |
| 1581 | { |
| 1582 | switch (type) { |
| 1583 | case ELEMENT_NODE: |
| 1584 | case TEXT_NODE: |
| 1585 | case COMMENT_NODE: |
| 1586 | case PROCESSING_INSTRUCTION_NODE: |
| 1587 | case CDATA_SECTION_NODE: |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1588 | return true; |
| 1589 | default: |
| 1590 | break; |
| 1591 | } |
| 1592 | return false; |
| 1593 | } |
| 1594 | |
| 1595 | static void checkForEmptyStyleChange(Element* element, RenderStyle* style) |
| 1596 | { |
| 1597 | if (!style && !element->styleAffectedByEmpty()) |
| 1598 | return; |
| 1599 | |
| 1600 | if (!style || (element->styleAffectedByEmpty() && (!style->emptyState() || element->hasChildNodes()))) |
| 1601 | element->setNeedsStyleRecalc(); |
| 1602 | } |
| 1603 | |
| 1604 | static void checkForSiblingStyleChanges(Element* e, RenderStyle* style, bool finishedParsingCallback, |
| 1605 | Node* beforeChange, Node* afterChange, int childCountDelta) |
| 1606 | { |
| 1607 | // :empty selector. |
| 1608 | checkForEmptyStyleChange(e, style); |
| 1609 | |
| 1610 | if (!style || (e->needsStyleRecalc() && e->childrenAffectedByPositionalRules())) |
| 1611 | return; |
| 1612 | |
| 1613 | // :first-child. In the parser callback case, we don't have to check anything, since we were right the first time. |
| 1614 | // In the DOM case, we only need to do something if |afterChange| is not 0. |
| 1615 | // |afterChange| is 0 in the parser case, so it works out that we'll skip this block. |
| 1616 | if (e->childrenAffectedByFirstChildRules() && afterChange) { |
| 1617 | // Find our new first child. |
| 1618 | Node* newFirstChild = 0; |
| 1619 | for (newFirstChild = e->firstChild(); newFirstChild && !newFirstChild->isElementNode(); newFirstChild = newFirstChild->nextSibling()) {}; |
| 1620 | |
| 1621 | // Find the first element node following |afterChange| |
| 1622 | Node* firstElementAfterInsertion = 0; |
| 1623 | for (firstElementAfterInsertion = afterChange; |
| 1624 | firstElementAfterInsertion && !firstElementAfterInsertion->isElementNode(); |
| 1625 | firstElementAfterInsertion = firstElementAfterInsertion->nextSibling()) {}; |
| 1626 | |
| 1627 | // This is the insert/append case. |
| 1628 | if (newFirstChild != firstElementAfterInsertion && firstElementAfterInsertion && firstElementAfterInsertion->attached() && |
| 1629 | firstElementAfterInsertion->renderStyle() && firstElementAfterInsertion->renderStyle()->firstChildState()) |
| 1630 | firstElementAfterInsertion->setNeedsStyleRecalc(); |
| 1631 | |
| 1632 | // We also have to handle node removal. |
| 1633 | if (childCountDelta < 0 && newFirstChild == firstElementAfterInsertion && newFirstChild && (!newFirstChild->renderStyle() || !newFirstChild->renderStyle()->firstChildState())) |
| 1634 | newFirstChild->setNeedsStyleRecalc(); |
| 1635 | } |
| 1636 | |
| 1637 | // :last-child. In the parser callback case, we don't have to check anything, since we were right the first time. |
| 1638 | // In the DOM case, we only need to do something if |afterChange| is not 0. |
| 1639 | if (e->childrenAffectedByLastChildRules() && beforeChange) { |
| 1640 | // Find our new last child. |
| 1641 | Node* newLastChild = 0; |
| 1642 | for (newLastChild = e->lastChild(); newLastChild && !newLastChild->isElementNode(); newLastChild = newLastChild->previousSibling()) {}; |
| 1643 | |
| 1644 | // Find the last element node going backwards from |beforeChange| |
| 1645 | Node* lastElementBeforeInsertion = 0; |
| 1646 | for (lastElementBeforeInsertion = beforeChange; |
| 1647 | lastElementBeforeInsertion && !lastElementBeforeInsertion->isElementNode(); |
| 1648 | lastElementBeforeInsertion = lastElementBeforeInsertion->previousSibling()) {}; |
| 1649 | |
| 1650 | if (newLastChild != lastElementBeforeInsertion && lastElementBeforeInsertion && lastElementBeforeInsertion->attached() && |
| 1651 | lastElementBeforeInsertion->renderStyle() && lastElementBeforeInsertion->renderStyle()->lastChildState()) |
| 1652 | lastElementBeforeInsertion->setNeedsStyleRecalc(); |
| 1653 | |
| 1654 | // We also have to handle node removal. The parser callback case is similar to node removal as well in that we need to change the last child |
| 1655 | // to match now. |
| 1656 | if ((childCountDelta < 0 || finishedParsingCallback) && newLastChild == lastElementBeforeInsertion && newLastChild && (!newLastChild->renderStyle() || !newLastChild->renderStyle()->lastChildState())) |
| 1657 | newLastChild->setNeedsStyleRecalc(); |
| 1658 | } |
| 1659 | |
| 1660 | // The + selector. We need to invalidate the first element following the insertion point. It is the only possible element |
| 1661 | // that could be affected by this DOM change. |
| 1662 | if (e->childrenAffectedByDirectAdjacentRules() && afterChange) { |
| 1663 | Node* firstElementAfterInsertion = 0; |
| 1664 | for (firstElementAfterInsertion = afterChange; |
| 1665 | firstElementAfterInsertion && !firstElementAfterInsertion->isElementNode(); |
| 1666 | firstElementAfterInsertion = firstElementAfterInsertion->nextSibling()) {}; |
| 1667 | if (firstElementAfterInsertion && firstElementAfterInsertion->attached()) |
| 1668 | firstElementAfterInsertion->setNeedsStyleRecalc(); |
| 1669 | } |
| 1670 | |
| 1671 | // Forward positional selectors include the ~ selector, nth-child, nth-of-type, first-of-type and only-of-type. |
| 1672 | // Backward positional selectors include nth-last-child, nth-last-of-type, last-of-type and only-of-type. |
| 1673 | // We have to invalidate everything following the insertion point in the forward case, and everything before the insertion point in the |
| 1674 | // backward case. |
| 1675 | // |afterChange| is 0 in the parser callback case, so we won't do any work for the forward case if we don't have to. |
| 1676 | // For performance reasons we just mark the parent node as changed, since we don't want to make childrenChanged O(n^2) by crawling all our kids |
| 1677 | // here. recalcStyle will then force a walk of the children when it sees that this has happened. |
| 1678 | if ((e->childrenAffectedByForwardPositionalRules() && afterChange) |
| 1679 | || (e->childrenAffectedByBackwardPositionalRules() && beforeChange)) |
| 1680 | e->setNeedsStyleRecalc(); |
| 1681 | } |
| 1682 | |
| 1683 | void Element::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) |
| 1684 | { |
| 1685 | ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta); |
| 1686 | if (changedByParser) |
| 1687 | checkForEmptyStyleChange(this, renderStyle()); |
| 1688 | else |
| 1689 | checkForSiblingStyleChanges(this, renderStyle(), false, beforeChange, afterChange, childCountDelta); |
| 1690 | |
| 1691 | if (ElementShadow * shadow = this->shadow()) |
| 1692 | shadow->invalidateDistribution(); |
| 1693 | } |
| 1694 | |
| 1695 | void Element::removeAllEventListeners() |
| 1696 | { |
| 1697 | ContainerNode::removeAllEventListeners(); |
| 1698 | if (ElementShadow* shadow = this->shadow()) |
| 1699 | shadow->removeAllEventListeners(); |
| 1700 | } |
| 1701 | |
| 1702 | void Element::beginParsingChildren() |
| 1703 | { |
| 1704 | clearIsParsingChildrenFinished(); |
| 1705 | StyleResolver* styleResolver = document()->styleResolverIfExists(); |
| 1706 | if (styleResolver && attached()) |
| 1707 | styleResolver->pushParentElement(this); |
| 1708 | } |
| 1709 | |
| 1710 | void Element::finishParsingChildren() |
| 1711 | { |
| 1712 | ContainerNode::finishParsingChildren(); |
| 1713 | setIsParsingChildrenFinished(); |
| 1714 | checkForSiblingStyleChanges(this, renderStyle(), true, lastChild(), 0, 0); |
| 1715 | if (StyleResolver* styleResolver = document()->styleResolverIfExists()) |
| 1716 | styleResolver->popParentElement(this); |
| 1717 | } |
| 1718 | |
| 1719 | #ifndef NDEBUG |
| 1720 | void Element::formatForDebugger(char* buffer, unsigned length) const |
| 1721 | { |
| 1722 | StringBuilder result; |
| 1723 | String s; |
| 1724 | |
| 1725 | result.append(nodeName()); |
| 1726 | |
| 1727 | s = getIdAttribute(); |
| 1728 | if (s.length() > 0) { |
| 1729 | if (result.length() > 0) |
| 1730 | result.appendLiteral("; "); |
| 1731 | result.appendLiteral("id="); |
| 1732 | result.append(s); |
| 1733 | } |
| 1734 | |
| 1735 | s = getAttribute(classAttr); |
| 1736 | if (s.length() > 0) { |
| 1737 | if (result.length() > 0) |
| 1738 | result.appendLiteral("; "); |
| 1739 | result.appendLiteral("class="); |
| 1740 | result.append(s); |
| 1741 | } |
| 1742 | |
| 1743 | strncpy(buffer, result.toString().utf8().data(), length - 1); |
| 1744 | } |
| 1745 | #endif |
| 1746 | |
| 1747 | const Vector<RefPtr<Attr> >& Element::attrNodeList() |
| 1748 | { |
| 1749 | ASSERT(hasSyntheticAttrChildNodes()); |
| 1750 | return *attrNodeListForElement(this); |
| 1751 | } |
| 1752 | |
| 1753 | PassRefPtr<Attr> Element::setAttributeNode(Attr* attrNode, ExceptionCode& ec) |
| 1754 | { |
| 1755 | if (!attrNode) { |
| 1756 | ec = TYPE_MISMATCH_ERR; |
| 1757 | return 0; |
| 1758 | } |
| 1759 | |
| 1760 | RefPtr<Attr> oldAttrNode = attrIfExists(attrNode->qualifiedName()); |
| 1761 | if (oldAttrNode.get() == attrNode) |
| 1762 | return attrNode; // This Attr is already attached to the element. |
| 1763 | |
| 1764 | // INUSE_ATTRIBUTE_ERR: Raised if node is an Attr that is already an attribute of another Element object. |
| 1765 | // The DOM user must explicitly clone Attr nodes to re-use them in other elements. |
| 1766 | if (attrNode->ownerElement()) { |
| 1767 | ec = INUSE_ATTRIBUTE_ERR; |
| 1768 | return 0; |
| 1769 | } |
| 1770 | |
| 1771 | synchronizeAllAttributes(); |
| 1772 | UniqueElementData* elementData = ensureUniqueElementData(); |
| 1773 | |
| 1774 | size_t index = elementData->getAttributeItemIndex(attrNode->qualifiedName()); |
| 1775 | if (index != notFound) { |
| 1776 | if (oldAttrNode) |
| 1777 | detachAttrNodeFromElementWithValue(oldAttrNode.get(), elementData->attributeItem(index)->value()); |
| 1778 | else |
| 1779 | oldAttrNode = Attr::create(document(), attrNode->qualifiedName(), elementData->attributeItem(index)->value()); |
| 1780 | } |
| 1781 | |
| 1782 | setAttributeInternal(index, attrNode->qualifiedName(), attrNode->value(), NotInSynchronizationOfLazyAttribute); |
| 1783 | |
| 1784 | attrNode->attachToElement(this); |
| 1785 | ensureAttrNodeListForElement(this)->append(attrNode); |
| 1786 | |
| 1787 | return oldAttrNode.release(); |
| 1788 | } |
| 1789 | |
| 1790 | PassRefPtr<Attr> Element::setAttributeNodeNS(Attr* attr, ExceptionCode& ec) |
| 1791 | { |
| 1792 | return setAttributeNode(attr, ec); |
| 1793 | } |
| 1794 | |
| 1795 | PassRefPtr<Attr> Element::removeAttributeNode(Attr* attr, ExceptionCode& ec) |
| 1796 | { |
| 1797 | if (!attr) { |
| 1798 | ec = TYPE_MISMATCH_ERR; |
| 1799 | return 0; |
| 1800 | } |
| 1801 | if (attr->ownerElement() != this) { |
| 1802 | ec = NOT_FOUND_ERR; |
| 1803 | return 0; |
| 1804 | } |
| 1805 | |
| 1806 | ASSERT(document() == attr->document()); |
| 1807 | |
| 1808 | synchronizeAttribute(attr->qualifiedName()); |
| 1809 | |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 1810 | size_t index = elementData()->getAttrIndex(attr); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1811 | if (index == notFound) { |
| 1812 | ec = NOT_FOUND_ERR; |
| 1813 | return 0; |
| 1814 | } |
| 1815 | |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 1816 | RefPtr<Attr> guard(attr); |
| 1817 | detachAttrNodeAtIndex(attr, index); |
| 1818 | return guard.release(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1819 | } |
| 1820 | |
| 1821 | bool Element::parseAttributeName(QualifiedName& out, const AtomicString& namespaceURI, const AtomicString& qualifiedName, ExceptionCode& ec) |
| 1822 | { |
| 1823 | String prefix, localName; |
| 1824 | if (!Document::parseQualifiedName(qualifiedName, prefix, localName, ec)) |
| 1825 | return false; |
| 1826 | ASSERT(!ec); |
| 1827 | |
| 1828 | QualifiedName qName(prefix, localName, namespaceURI); |
| 1829 | |
| 1830 | if (!Document::hasValidNamespaceForAttributes(qName)) { |
| 1831 | ec = NAMESPACE_ERR; |
| 1832 | return false; |
| 1833 | } |
| 1834 | |
| 1835 | out = qName; |
| 1836 | return true; |
| 1837 | } |
| 1838 | |
| 1839 | void Element::setAttributeNS(const AtomicString& namespaceURI, const AtomicString& qualifiedName, const AtomicString& value, ExceptionCode& ec) |
| 1840 | { |
| 1841 | QualifiedName parsedName = anyName; |
| 1842 | if (!parseAttributeName(parsedName, namespaceURI, qualifiedName, ec)) |
| 1843 | return; |
| 1844 | setAttribute(parsedName, value); |
| 1845 | } |
| 1846 | |
| 1847 | void Element::removeAttributeInternal(size_t index, SynchronizationOfLazyAttribute inSynchronizationOfLazyAttribute) |
| 1848 | { |
| 1849 | ASSERT_WITH_SECURITY_IMPLICATION(index < attributeCount()); |
| 1850 | |
| 1851 | UniqueElementData* elementData = ensureUniqueElementData(); |
| 1852 | |
| 1853 | QualifiedName name = elementData->attributeItem(index)->name(); |
| 1854 | AtomicString valueBeingRemoved = elementData->attributeItem(index)->value(); |
| 1855 | |
| 1856 | if (!inSynchronizationOfLazyAttribute) { |
| 1857 | if (!valueBeingRemoved.isNull()) |
| 1858 | willModifyAttribute(name, valueBeingRemoved, nullAtom); |
| 1859 | } |
| 1860 | |
| 1861 | if (RefPtr<Attr> attrNode = attrIfExists(name)) |
| 1862 | detachAttrNodeFromElementWithValue(attrNode.get(), elementData->attributeItem(index)->value()); |
| 1863 | |
| 1864 | elementData->removeAttribute(index); |
| 1865 | |
| 1866 | if (!inSynchronizationOfLazyAttribute) |
| 1867 | didRemoveAttribute(name); |
| 1868 | } |
| 1869 | |
| 1870 | void Element::addAttributeInternal(const QualifiedName& name, const AtomicString& value, SynchronizationOfLazyAttribute inSynchronizationOfLazyAttribute) |
| 1871 | { |
| 1872 | if (!inSynchronizationOfLazyAttribute) |
| 1873 | willModifyAttribute(name, nullAtom, value); |
| 1874 | ensureUniqueElementData()->addAttribute(name, value); |
| 1875 | if (!inSynchronizationOfLazyAttribute) |
| 1876 | didAddAttribute(name, value); |
| 1877 | } |
| 1878 | |
| 1879 | void Element::removeAttribute(const AtomicString& name) |
| 1880 | { |
| 1881 | if (!elementData()) |
| 1882 | return; |
| 1883 | |
| 1884 | AtomicString localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; |
| 1885 | size_t index = elementData()->getAttributeItemIndex(localName, false); |
| 1886 | if (index == notFound) { |
| 1887 | if (UNLIKELY(localName == styleAttr) && elementData()->m_styleAttributeIsDirty && isStyledElement()) |
| 1888 | static_cast<StyledElement*>(this)->removeAllInlineStyleProperties(); |
| 1889 | return; |
| 1890 | } |
| 1891 | |
| 1892 | removeAttributeInternal(index, NotInSynchronizationOfLazyAttribute); |
| 1893 | } |
| 1894 | |
| 1895 | void Element::removeAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) |
| 1896 | { |
| 1897 | removeAttribute(QualifiedName(nullAtom, localName, namespaceURI)); |
| 1898 | } |
| 1899 | |
| 1900 | PassRefPtr<Attr> Element::getAttributeNode(const AtomicString& localName) |
| 1901 | { |
| 1902 | if (!elementData()) |
| 1903 | return 0; |
| 1904 | synchronizeAttribute(localName); |
| 1905 | const Attribute* attribute = elementData()->getAttributeItem(localName, shouldIgnoreAttributeCase(this)); |
| 1906 | if (!attribute) |
| 1907 | return 0; |
| 1908 | return ensureAttr(attribute->name()); |
| 1909 | } |
| 1910 | |
| 1911 | PassRefPtr<Attr> Element::getAttributeNodeNS(const AtomicString& namespaceURI, const AtomicString& localName) |
| 1912 | { |
| 1913 | if (!elementData()) |
| 1914 | return 0; |
| 1915 | QualifiedName qName(nullAtom, localName, namespaceURI); |
| 1916 | synchronizeAttribute(qName); |
| 1917 | const Attribute* attribute = elementData()->getAttributeItem(qName); |
| 1918 | if (!attribute) |
| 1919 | return 0; |
| 1920 | return ensureAttr(attribute->name()); |
| 1921 | } |
| 1922 | |
| 1923 | bool Element::hasAttribute(const AtomicString& localName) const |
| 1924 | { |
| 1925 | if (!elementData()) |
| 1926 | return false; |
| 1927 | synchronizeAttribute(localName); |
| 1928 | return elementData()->getAttributeItem(shouldIgnoreAttributeCase(this) ? localName.lower() : localName, false); |
| 1929 | } |
| 1930 | |
| 1931 | bool Element::hasAttributeNS(const AtomicString& namespaceURI, const AtomicString& localName) const |
| 1932 | { |
| 1933 | if (!elementData()) |
| 1934 | return false; |
| 1935 | QualifiedName qName(nullAtom, localName, namespaceURI); |
| 1936 | synchronizeAttribute(qName); |
| 1937 | return elementData()->getAttributeItem(qName); |
| 1938 | } |
| 1939 | |
| 1940 | CSSStyleDeclaration *Element::style() |
| 1941 | { |
| 1942 | return 0; |
| 1943 | } |
| 1944 | |
| 1945 | void Element::focus(bool restorePreviousSelection, FocusDirection direction) |
| 1946 | { |
| 1947 | if (!inDocument()) |
| 1948 | return; |
| 1949 | |
| 1950 | Document* doc = document(); |
| 1951 | if (doc->focusedNode() == this) |
| 1952 | return; |
| 1953 | |
| 1954 | // If the stylesheets have already been loaded we can reliably check isFocusable. |
| 1955 | // If not, we continue and set the focused node on the focus controller below so |
| 1956 | // that it can be updated soon after attach. |
| 1957 | if (doc->haveStylesheetsLoaded()) { |
| 1958 | doc->updateLayoutIgnorePendingStylesheets(); |
| 1959 | if (!isFocusable()) |
| 1960 | return; |
| 1961 | } |
| 1962 | |
| 1963 | if (!supportsFocus()) |
| 1964 | return; |
| 1965 | |
| 1966 | RefPtr<Node> protect; |
| 1967 | if (Page* page = doc->page()) { |
| 1968 | // Focus and change event handlers can cause us to lose our last ref. |
| 1969 | // If a focus event handler changes the focus to a different node it |
| 1970 | // does not make sense to continue and update appearence. |
| 1971 | protect = this; |
| 1972 | if (!page->focusController()->setFocusedNode(this, doc->frame(), direction)) |
| 1973 | return; |
| 1974 | } |
| 1975 | |
| 1976 | // Setting the focused node above might have invalidated the layout due to scripts. |
| 1977 | doc->updateLayoutIgnorePendingStylesheets(); |
| 1978 | |
| 1979 | if (!isFocusable()) { |
| 1980 | ensureElementRareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(true); |
| 1981 | return; |
| 1982 | } |
| 1983 | |
| 1984 | cancelFocusAppearanceUpdate(); |
| 1985 | updateFocusAppearance(restorePreviousSelection); |
| 1986 | } |
| 1987 | |
| 1988 | void Element::updateFocusAppearance(bool /*restorePreviousSelection*/) |
| 1989 | { |
| 1990 | if (isRootEditableElement()) { |
| 1991 | Frame* frame = document()->frame(); |
| 1992 | if (!frame) |
| 1993 | return; |
| 1994 | |
| 1995 | // When focusing an editable element in an iframe, don't reset the selection if it already contains a selection. |
| 1996 | if (this == frame->selection()->rootEditableElement()) |
| 1997 | return; |
| 1998 | |
| 1999 | // FIXME: We should restore the previous selection if there is one. |
| 2000 | VisibleSelection newSelection = VisibleSelection(firstPositionInOrBeforeNode(this), DOWNSTREAM); |
| 2001 | |
| 2002 | if (frame->selection()->shouldChangeSelection(newSelection)) { |
| 2003 | frame->selection()->setSelection(newSelection); |
| 2004 | frame->selection()->revealSelection(); |
| 2005 | } |
| 2006 | } else if (renderer() && !renderer()->isWidget()) |
| 2007 | renderer()->scrollRectToVisible(boundingBox()); |
| 2008 | } |
| 2009 | |
| 2010 | void Element::blur() |
| 2011 | { |
| 2012 | cancelFocusAppearanceUpdate(); |
| 2013 | Document* doc = document(); |
| 2014 | if (treeScope()->focusedNode() == this) { |
| 2015 | if (doc->frame()) |
| 2016 | doc->frame()->page()->focusController()->setFocusedNode(0, doc->frame()); |
| 2017 | else |
| 2018 | doc->setFocusedNode(0); |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | String Element::innerText() |
| 2023 | { |
| 2024 | // We need to update layout, since plainText uses line boxes in the render tree. |
| 2025 | document()->updateLayoutIgnorePendingStylesheets(); |
| 2026 | |
| 2027 | if (!renderer()) |
| 2028 | return textContent(true); |
| 2029 | |
| 2030 | return plainText(rangeOfContents(const_cast<Element*>(this)).get()); |
| 2031 | } |
| 2032 | |
| 2033 | String Element::outerText() |
| 2034 | { |
| 2035 | // Getting outerText is the same as getting innerText, only |
| 2036 | // setting is different. You would think this should get the plain |
| 2037 | // text for the outer range, but this is wrong, <br> for instance |
| 2038 | // would return different values for inner and outer text by such |
| 2039 | // a rule, but it doesn't in WinIE, and we want to match that. |
| 2040 | return innerText(); |
| 2041 | } |
| 2042 | |
| 2043 | String Element::title() const |
| 2044 | { |
| 2045 | return String(); |
| 2046 | } |
| 2047 | |
| 2048 | const AtomicString& Element::pseudo() const |
| 2049 | { |
| 2050 | return getAttribute(pseudoAttr); |
| 2051 | } |
| 2052 | |
| 2053 | void Element::setPseudo(const AtomicString& value) |
| 2054 | { |
| 2055 | setAttribute(pseudoAttr, value); |
| 2056 | } |
| 2057 | |
| 2058 | LayoutSize Element::minimumSizeForResizing() const |
| 2059 | { |
| 2060 | return hasRareData() ? elementRareData()->minimumSizeForResizing() : defaultMinimumSizeForResizing(); |
| 2061 | } |
| 2062 | |
| 2063 | void Element::setMinimumSizeForResizing(const LayoutSize& size) |
| 2064 | { |
| 2065 | if (!hasRareData() && size == defaultMinimumSizeForResizing()) |
| 2066 | return; |
| 2067 | ensureElementRareData()->setMinimumSizeForResizing(size); |
| 2068 | } |
| 2069 | |
| 2070 | RenderStyle* Element::computedStyle(PseudoId pseudoElementSpecifier) |
| 2071 | { |
| 2072 | if (PseudoElement* element = pseudoElement(pseudoElementSpecifier)) |
| 2073 | return element->computedStyle(); |
| 2074 | |
| 2075 | // FIXME: Find and use the renderer from the pseudo element instead of the actual element so that the 'length' |
| 2076 | // properties, which are only known by the renderer because it did the layout, will be correct and so that the |
| 2077 | // values returned for the ":selection" pseudo-element will be correct. |
| 2078 | if (RenderStyle* usedStyle = renderStyle()) { |
| 2079 | if (pseudoElementSpecifier) { |
| 2080 | RenderStyle* cachedPseudoStyle = usedStyle->getCachedPseudoStyle(pseudoElementSpecifier); |
| 2081 | return cachedPseudoStyle ? cachedPseudoStyle : usedStyle; |
| 2082 | } else |
| 2083 | return usedStyle; |
| 2084 | } |
| 2085 | |
| 2086 | if (!attached()) |
| 2087 | // FIXME: Try to do better than this. Ensure that styleForElement() works for elements that are not in the |
| 2088 | // document tree and figure out when to destroy the computed style for such elements. |
| 2089 | return 0; |
| 2090 | |
| 2091 | ElementRareData* data = ensureElementRareData(); |
| 2092 | if (!data->computedStyle()) |
| 2093 | data->setComputedStyle(document()->styleForElementIgnoringPendingStylesheets(this)); |
| 2094 | return pseudoElementSpecifier ? data->computedStyle()->getCachedPseudoStyle(pseudoElementSpecifier) : data->computedStyle(); |
| 2095 | } |
| 2096 | |
| 2097 | void Element::setStyleAffectedByEmpty() |
| 2098 | { |
| 2099 | ensureElementRareData()->setStyleAffectedByEmpty(true); |
| 2100 | } |
| 2101 | |
| 2102 | void Element::setChildrenAffectedByHover(bool value) |
| 2103 | { |
| 2104 | if (value || hasRareData()) |
| 2105 | ensureElementRareData()->setChildrenAffectedByHover(value); |
| 2106 | } |
| 2107 | |
| 2108 | void Element::setChildrenAffectedByActive(bool value) |
| 2109 | { |
| 2110 | if (value || hasRareData()) |
| 2111 | ensureElementRareData()->setChildrenAffectedByActive(value); |
| 2112 | } |
| 2113 | |
| 2114 | void Element::setChildrenAffectedByDrag(bool value) |
| 2115 | { |
| 2116 | if (value || hasRareData()) |
| 2117 | ensureElementRareData()->setChildrenAffectedByDrag(value); |
| 2118 | } |
| 2119 | |
| 2120 | void Element::setChildrenAffectedByFirstChildRules() |
| 2121 | { |
| 2122 | ensureElementRareData()->setChildrenAffectedByFirstChildRules(true); |
| 2123 | } |
| 2124 | |
| 2125 | void Element::setChildrenAffectedByLastChildRules() |
| 2126 | { |
| 2127 | ensureElementRareData()->setChildrenAffectedByLastChildRules(true); |
| 2128 | } |
| 2129 | |
| 2130 | void Element::setChildrenAffectedByDirectAdjacentRules() |
| 2131 | { |
| 2132 | ensureElementRareData()->setChildrenAffectedByDirectAdjacentRules(true); |
| 2133 | } |
| 2134 | |
| 2135 | void Element::setChildrenAffectedByForwardPositionalRules() |
| 2136 | { |
| 2137 | ensureElementRareData()->setChildrenAffectedByForwardPositionalRules(true); |
| 2138 | } |
| 2139 | |
| 2140 | void Element::setChildrenAffectedByBackwardPositionalRules() |
| 2141 | { |
| 2142 | ensureElementRareData()->setChildrenAffectedByBackwardPositionalRules(true); |
| 2143 | } |
| 2144 | |
| 2145 | void Element::setChildIndex(unsigned index) |
| 2146 | { |
| 2147 | ElementRareData* rareData = ensureElementRareData(); |
| 2148 | if (RenderStyle* style = renderStyle()) |
| 2149 | style->setUnique(); |
| 2150 | rareData->setChildIndex(index); |
| 2151 | } |
| 2152 | |
| 2153 | bool Element::hasFlagsSetDuringStylingOfChildren() const |
| 2154 | { |
| 2155 | if (!hasRareData()) |
| 2156 | return false; |
| 2157 | return rareDataChildrenAffectedByHover() |
| 2158 | || rareDataChildrenAffectedByActive() |
| 2159 | || rareDataChildrenAffectedByDrag() |
| 2160 | || rareDataChildrenAffectedByFirstChildRules() |
| 2161 | || rareDataChildrenAffectedByLastChildRules() |
| 2162 | || rareDataChildrenAffectedByDirectAdjacentRules() |
| 2163 | || rareDataChildrenAffectedByForwardPositionalRules() |
| 2164 | || rareDataChildrenAffectedByBackwardPositionalRules(); |
| 2165 | } |
| 2166 | |
| 2167 | bool Element::rareDataStyleAffectedByEmpty() const |
| 2168 | { |
| 2169 | ASSERT(hasRareData()); |
| 2170 | return elementRareData()->styleAffectedByEmpty(); |
| 2171 | } |
| 2172 | |
| 2173 | bool Element::rareDataChildrenAffectedByHover() const |
| 2174 | { |
| 2175 | ASSERT(hasRareData()); |
| 2176 | return elementRareData()->childrenAffectedByHover(); |
| 2177 | } |
| 2178 | |
| 2179 | bool Element::rareDataChildrenAffectedByActive() const |
| 2180 | { |
| 2181 | ASSERT(hasRareData()); |
| 2182 | return elementRareData()->childrenAffectedByActive(); |
| 2183 | } |
| 2184 | |
| 2185 | bool Element::rareDataChildrenAffectedByDrag() const |
| 2186 | { |
| 2187 | ASSERT(hasRareData()); |
| 2188 | return elementRareData()->childrenAffectedByDrag(); |
| 2189 | } |
| 2190 | |
| 2191 | bool Element::rareDataChildrenAffectedByFirstChildRules() const |
| 2192 | { |
| 2193 | ASSERT(hasRareData()); |
| 2194 | return elementRareData()->childrenAffectedByFirstChildRules(); |
| 2195 | } |
| 2196 | |
| 2197 | bool Element::rareDataChildrenAffectedByLastChildRules() const |
| 2198 | { |
| 2199 | ASSERT(hasRareData()); |
| 2200 | return elementRareData()->childrenAffectedByLastChildRules(); |
| 2201 | } |
| 2202 | |
| 2203 | bool Element::rareDataChildrenAffectedByDirectAdjacentRules() const |
| 2204 | { |
| 2205 | ASSERT(hasRareData()); |
| 2206 | return elementRareData()->childrenAffectedByDirectAdjacentRules(); |
| 2207 | } |
| 2208 | |
| 2209 | bool Element::rareDataChildrenAffectedByForwardPositionalRules() const |
| 2210 | { |
| 2211 | ASSERT(hasRareData()); |
| 2212 | return elementRareData()->childrenAffectedByForwardPositionalRules(); |
| 2213 | } |
| 2214 | |
| 2215 | bool Element::rareDataChildrenAffectedByBackwardPositionalRules() const |
| 2216 | { |
| 2217 | ASSERT(hasRareData()); |
| 2218 | return elementRareData()->childrenAffectedByBackwardPositionalRules(); |
| 2219 | } |
| 2220 | |
| 2221 | unsigned Element::rareDataChildIndex() const |
| 2222 | { |
| 2223 | ASSERT(hasRareData()); |
| 2224 | return elementRareData()->childIndex(); |
| 2225 | } |
| 2226 | |
| 2227 | void Element::setIsInCanvasSubtree(bool isInCanvasSubtree) |
| 2228 | { |
| 2229 | ensureElementRareData()->setIsInCanvasSubtree(isInCanvasSubtree); |
| 2230 | } |
| 2231 | |
| 2232 | bool Element::isInCanvasSubtree() const |
| 2233 | { |
| 2234 | return hasRareData() && elementRareData()->isInCanvasSubtree(); |
| 2235 | } |
| 2236 | |
| 2237 | bool Element::isUnresolvedCustomElement() |
| 2238 | { |
| 2239 | return isCustomElement() && document()->registry()->isUnresolved(this); |
| 2240 | } |
| 2241 | |
| 2242 | AtomicString Element::computeInheritedLanguage() const |
| 2243 | { |
| 2244 | const Node* n = this; |
| 2245 | AtomicString value; |
| 2246 | // The language property is inherited, so we iterate over the parents to find the first language. |
| 2247 | do { |
| 2248 | if (n->isElementNode()) { |
| 2249 | if (const ElementData* elementData = toElement(n)->elementData()) { |
| 2250 | // Spec: xml:lang takes precedence -- http://www.w3.org/TR/xhtml1/#C_7 |
| 2251 | if (const Attribute* attribute = elementData->getAttributeItem(XMLNames::langAttr)) |
| 2252 | value = attribute->value(); |
| 2253 | else if (const Attribute* attribute = elementData->getAttributeItem(HTMLNames::langAttr)) |
| 2254 | value = attribute->value(); |
| 2255 | } |
| 2256 | } else if (n->isDocumentNode()) { |
| 2257 | // checking the MIME content-language |
| 2258 | value = toDocument(n)->contentLanguage(); |
| 2259 | } |
| 2260 | |
| 2261 | n = n->parentNode(); |
| 2262 | } while (n && value.isNull()); |
| 2263 | |
| 2264 | return value; |
| 2265 | } |
| 2266 | |
| 2267 | Locale& Element::locale() const |
| 2268 | { |
| 2269 | return document()->getCachedLocale(computeInheritedLanguage()); |
| 2270 | } |
| 2271 | |
| 2272 | void Element::cancelFocusAppearanceUpdate() |
| 2273 | { |
| 2274 | if (hasRareData()) |
| 2275 | elementRareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(false); |
| 2276 | if (document()->focusedNode() == this) |
| 2277 | document()->cancelFocusAppearanceUpdate(); |
| 2278 | } |
| 2279 | |
| 2280 | void Element::normalizeAttributes() |
| 2281 | { |
| 2282 | if (!hasAttributes()) |
| 2283 | return; |
| 2284 | for (unsigned i = 0; i < attributeCount(); ++i) { |
| 2285 | if (RefPtr<Attr> attr = attrIfExists(attributeItem(i)->name())) |
| 2286 | attr->normalize(); |
| 2287 | } |
| 2288 | } |
| 2289 | |
| 2290 | void Element::updatePseudoElement(PseudoId pseudoId, StyleChange change) |
| 2291 | { |
| 2292 | PseudoElement* element = pseudoElement(pseudoId); |
| 2293 | if (element && (needsStyleRecalc() || shouldRecalcStyle(change, element))) { |
| 2294 | // PseudoElement styles hang off their parent element's style so if we needed |
| 2295 | // a style recalc we should Force one on the pseudo. |
| 2296 | element->recalcStyle(needsStyleRecalc() ? Force : change); |
| 2297 | |
| 2298 | // Wait until our parent is not displayed or pseudoElementRendererIsNeeded |
| 2299 | // is false, otherwise we could continously create and destroy PseudoElements |
| 2300 | // when RenderObject::isChildAllowed on our parent returns false for the |
| 2301 | // PseudoElement's renderer for each style recalc. |
| 2302 | if (!renderer() || !pseudoElementRendererIsNeeded(renderer()->getCachedPseudoStyle(pseudoId))) |
| 2303 | setPseudoElement(pseudoId, 0); |
| 2304 | } else if (change >= Inherit || needsStyleRecalc()) |
| 2305 | createPseudoElementIfNeeded(pseudoId); |
| 2306 | } |
| 2307 | |
| 2308 | void Element::createPseudoElementIfNeeded(PseudoId pseudoId) |
| 2309 | { |
| 2310 | if (!document()->styleSheetCollection()->usesBeforeAfterRules()) |
| 2311 | return; |
| 2312 | |
| 2313 | if (!renderer() || !pseudoElementRendererIsNeeded(renderer()->getCachedPseudoStyle(pseudoId))) |
| 2314 | return; |
| 2315 | |
| 2316 | if (!renderer()->canHaveGeneratedChildren()) |
| 2317 | return; |
| 2318 | |
| 2319 | ASSERT(!isPseudoElement()); |
| 2320 | RefPtr<PseudoElement> element = PseudoElement::create(this, pseudoId); |
| 2321 | element->attach(); |
| 2322 | setPseudoElement(pseudoId, element.release()); |
| 2323 | } |
| 2324 | |
| 2325 | bool Element::hasPseudoElements() const |
| 2326 | { |
| 2327 | return hasRareData() && elementRareData()->hasPseudoElements(); |
| 2328 | } |
| 2329 | |
| 2330 | PseudoElement* Element::pseudoElement(PseudoId pseudoId) const |
| 2331 | { |
| 2332 | return hasRareData() ? elementRareData()->pseudoElement(pseudoId) : 0; |
| 2333 | } |
| 2334 | |
| 2335 | void Element::setPseudoElement(PseudoId pseudoId, PassRefPtr<PseudoElement> element) |
| 2336 | { |
| 2337 | ensureElementRareData()->setPseudoElement(pseudoId, element); |
| 2338 | resetNeedsShadowTreeWalker(); |
| 2339 | } |
| 2340 | |
| 2341 | RenderObject* Element::pseudoElementRenderer(PseudoId pseudoId) const |
| 2342 | { |
| 2343 | if (PseudoElement* element = pseudoElement(pseudoId)) |
| 2344 | return element->renderer(); |
| 2345 | return 0; |
| 2346 | } |
| 2347 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 2348 | bool Element::matchesReadOnlyPseudoClass() const |
| 2349 | { |
| 2350 | return false; |
| 2351 | } |
| 2352 | |
| 2353 | bool Element::matchesReadWritePseudoClass() const |
| 2354 | { |
| 2355 | return false; |
| 2356 | } |
| 2357 | |
| 2358 | bool Element::webkitMatchesSelector(const String& selector, ExceptionCode& ec) |
| 2359 | { |
| 2360 | if (selector.isEmpty()) { |
| 2361 | ec = SYNTAX_ERR; |
| 2362 | return false; |
| 2363 | } |
| 2364 | |
| 2365 | SelectorQuery* selectorQuery = document()->selectorQueryCache()->add(selector, document(), ec); |
| 2366 | if (!selectorQuery) |
| 2367 | return false; |
| 2368 | return selectorQuery->matches(this); |
| 2369 | } |
| 2370 | |
| 2371 | bool Element::shouldAppearIndeterminate() const |
| 2372 | { |
| 2373 | return false; |
| 2374 | } |
| 2375 | |
| 2376 | DOMTokenList* Element::classList() |
| 2377 | { |
| 2378 | ElementRareData* data = ensureElementRareData(); |
| 2379 | if (!data->classList()) |
| 2380 | data->setClassList(ClassList::create(this)); |
| 2381 | return data->classList(); |
| 2382 | } |
| 2383 | |
| 2384 | DOMStringMap* Element::dataset() |
| 2385 | { |
| 2386 | ElementRareData* data = ensureElementRareData(); |
| 2387 | if (!data->dataset()) |
| 2388 | data->setDataset(DatasetDOMStringMap::create(this)); |
| 2389 | return data->dataset(); |
| 2390 | } |
| 2391 | |
| 2392 | KURL Element::getURLAttribute(const QualifiedName& name) const |
| 2393 | { |
| 2394 | #if !ASSERT_DISABLED |
| 2395 | if (elementData()) { |
| 2396 | if (const Attribute* attribute = getAttributeItem(name)) |
| 2397 | ASSERT(isURLAttribute(*attribute)); |
| 2398 | } |
| 2399 | #endif |
| 2400 | return document()->completeURL(stripLeadingAndTrailingHTMLSpaces(getAttribute(name))); |
| 2401 | } |
| 2402 | |
| 2403 | KURL Element::getNonEmptyURLAttribute(const QualifiedName& name) const |
| 2404 | { |
| 2405 | #if !ASSERT_DISABLED |
| 2406 | if (elementData()) { |
| 2407 | if (const Attribute* attribute = getAttributeItem(name)) |
| 2408 | ASSERT(isURLAttribute(*attribute)); |
| 2409 | } |
| 2410 | #endif |
| 2411 | String value = stripLeadingAndTrailingHTMLSpaces(getAttribute(name)); |
| 2412 | if (value.isEmpty()) |
| 2413 | return KURL(); |
| 2414 | return document()->completeURL(value); |
| 2415 | } |
| 2416 | |
| 2417 | int Element::getIntegralAttribute(const QualifiedName& attributeName) const |
| 2418 | { |
| 2419 | return getAttribute(attributeName).string().toInt(); |
| 2420 | } |
| 2421 | |
| 2422 | void Element::setIntegralAttribute(const QualifiedName& attributeName, int value) |
| 2423 | { |
| 2424 | // FIXME: Need an AtomicString version of String::number. |
| 2425 | setAttribute(attributeName, String::number(value)); |
| 2426 | } |
| 2427 | |
| 2428 | unsigned Element::getUnsignedIntegralAttribute(const QualifiedName& attributeName) const |
| 2429 | { |
| 2430 | return getAttribute(attributeName).string().toUInt(); |
| 2431 | } |
| 2432 | |
| 2433 | void Element::setUnsignedIntegralAttribute(const QualifiedName& attributeName, unsigned value) |
| 2434 | { |
| 2435 | // FIXME: Need an AtomicString version of String::number. |
| 2436 | setAttribute(attributeName, String::number(value)); |
| 2437 | } |
| 2438 | |
| 2439 | #if ENABLE(SVG) |
| 2440 | bool Element::childShouldCreateRenderer(const NodeRenderingContext& childContext) const |
| 2441 | { |
| 2442 | // Only create renderers for SVG elements whose parents are SVG elements, or for proper <svg xmlns="svgNS"> subdocuments. |
| 2443 | if (childContext.node()->isSVGElement()) |
| 2444 | return childContext.node()->hasTagName(SVGNames::svgTag) || isSVGElement(); |
| 2445 | |
| 2446 | return ContainerNode::childShouldCreateRenderer(childContext); |
| 2447 | } |
| 2448 | #endif |
| 2449 | |
| 2450 | void Element::webkitRequestFullscreen() |
| 2451 | { |
| 2452 | document()->requestFullScreenForElement(this, ALLOW_KEYBOARD_INPUT, Document::EnforceIFrameAllowFullScreenRequirement); |
| 2453 | } |
| 2454 | |
| 2455 | void Element::webkitRequestFullScreen(unsigned short flags) |
| 2456 | { |
| 2457 | document()->requestFullScreenForElement(this, (flags | LEGACY_MOZILLA_REQUEST), Document::EnforceIFrameAllowFullScreenRequirement); |
| 2458 | } |
| 2459 | |
| 2460 | bool Element::containsFullScreenElement() const |
| 2461 | { |
| 2462 | return hasRareData() && elementRareData()->containsFullScreenElement(); |
| 2463 | } |
| 2464 | |
| 2465 | void Element::setContainsFullScreenElement(bool flag) |
| 2466 | { |
| 2467 | ensureElementRareData()->setContainsFullScreenElement(flag); |
| 2468 | setNeedsStyleRecalc(SyntheticStyleChange); |
| 2469 | } |
| 2470 | |
| 2471 | static Element* parentCrossingFrameBoundaries(Element* element) |
| 2472 | { |
| 2473 | ASSERT(element); |
| 2474 | return element->parentElement() ? element->parentElement() : element->document()->ownerElement(); |
| 2475 | } |
| 2476 | |
| 2477 | void Element::setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(bool flag) |
| 2478 | { |
| 2479 | Element* element = this; |
| 2480 | while ((element = parentCrossingFrameBoundaries(element))) |
| 2481 | element->setContainsFullScreenElement(flag); |
| 2482 | } |
| 2483 | |
| 2484 | bool Element::isInTopLayer() const |
| 2485 | { |
| 2486 | return hasRareData() && elementRareData()->isInTopLayer(); |
| 2487 | } |
| 2488 | |
| 2489 | void Element::setIsInTopLayer(bool inTopLayer) |
| 2490 | { |
| 2491 | if (isInTopLayer() == inTopLayer) |
| 2492 | return; |
| 2493 | ensureElementRareData()->setIsInTopLayer(inTopLayer); |
| 2494 | |
| 2495 | // We must ensure a reattach occurs so the renderer is inserted in the correct sibling order under RenderView according to its |
| 2496 | // top layer position, or in its usual place if not in the top layer. |
| 2497 | reattachIfAttached(); |
| 2498 | } |
| 2499 | |
| 2500 | void Element::webkitRequestPointerLock() |
| 2501 | { |
| 2502 | if (document()->page()) |
| 2503 | document()->page()->pointerLockController()->requestPointerLock(this); |
| 2504 | } |
| 2505 | |
| 2506 | SpellcheckAttributeState Element::spellcheckAttributeState() const |
| 2507 | { |
| 2508 | const AtomicString& value = getAttribute(HTMLNames::spellcheckAttr); |
| 2509 | if (value == nullAtom) |
| 2510 | return SpellcheckAttributeDefault; |
| 2511 | if (equalIgnoringCase(value, "true") || equalIgnoringCase(value, "")) |
| 2512 | return SpellcheckAttributeTrue; |
| 2513 | if (equalIgnoringCase(value, "false")) |
| 2514 | return SpellcheckAttributeFalse; |
| 2515 | |
| 2516 | return SpellcheckAttributeDefault; |
| 2517 | } |
| 2518 | |
| 2519 | bool Element::isSpellCheckingEnabled() const |
| 2520 | { |
| 2521 | for (const Element* element = this; element; element = element->parentOrShadowHostElement()) { |
| 2522 | switch (element->spellcheckAttributeState()) { |
| 2523 | case SpellcheckAttributeTrue: |
| 2524 | return true; |
| 2525 | case SpellcheckAttributeFalse: |
| 2526 | return false; |
| 2527 | case SpellcheckAttributeDefault: |
| 2528 | break; |
| 2529 | } |
| 2530 | } |
| 2531 | |
| 2532 | return true; |
| 2533 | } |
| 2534 | |
| 2535 | RenderRegion* Element::renderRegion() const |
| 2536 | { |
| 2537 | if (renderer() && renderer()->isRenderRegion()) |
| 2538 | return toRenderRegion(renderer()); |
| 2539 | |
| 2540 | return 0; |
| 2541 | } |
| 2542 | |
| 2543 | const AtomicString& Element::webkitRegionOverset() const |
| 2544 | { |
| 2545 | document()->updateLayoutIgnorePendingStylesheets(); |
| 2546 | |
| 2547 | DEFINE_STATIC_LOCAL(AtomicString, undefinedState, ("undefined", AtomicString::ConstructFromLiteral)); |
| 2548 | if (!RuntimeEnabledFeatures::cssRegionsEnabled() || !renderRegion()) |
| 2549 | return undefinedState; |
| 2550 | |
| 2551 | switch (renderRegion()->regionState()) { |
| 2552 | case RenderRegion::RegionFit: { |
| 2553 | DEFINE_STATIC_LOCAL(AtomicString, fitState, ("fit", AtomicString::ConstructFromLiteral)); |
| 2554 | return fitState; |
| 2555 | } |
| 2556 | case RenderRegion::RegionEmpty: { |
| 2557 | DEFINE_STATIC_LOCAL(AtomicString, emptyState, ("empty", AtomicString::ConstructFromLiteral)); |
| 2558 | return emptyState; |
| 2559 | } |
| 2560 | case RenderRegion::RegionOverset: { |
| 2561 | DEFINE_STATIC_LOCAL(AtomicString, overflowState, ("overset", AtomicString::ConstructFromLiteral)); |
| 2562 | return overflowState; |
| 2563 | } |
| 2564 | case RenderRegion::RegionUndefined: |
| 2565 | return undefinedState; |
| 2566 | } |
| 2567 | |
| 2568 | ASSERT_NOT_REACHED(); |
| 2569 | return undefinedState; |
| 2570 | } |
| 2571 | |
| 2572 | Vector<RefPtr<Range> > Element::webkitGetRegionFlowRanges() const |
| 2573 | { |
| 2574 | document()->updateLayoutIgnorePendingStylesheets(); |
| 2575 | |
| 2576 | Vector<RefPtr<Range> > rangeObjects; |
| 2577 | if (RuntimeEnabledFeatures::cssRegionsEnabled() && renderer() && renderer()->isRenderRegion()) { |
| 2578 | RenderRegion* region = toRenderRegion(renderer()); |
| 2579 | if (region->isValid()) |
| 2580 | region->getRanges(rangeObjects); |
| 2581 | } |
| 2582 | |
| 2583 | return rangeObjects; |
| 2584 | } |
| 2585 | |
| 2586 | #ifndef NDEBUG |
| 2587 | bool Element::fastAttributeLookupAllowed(const QualifiedName& name) const |
| 2588 | { |
| 2589 | if (name == HTMLNames::styleAttr) |
| 2590 | return false; |
| 2591 | |
| 2592 | #if ENABLE(SVG) |
| 2593 | if (isSVGElement()) |
| 2594 | return !static_cast<const SVGElement*>(this)->isAnimatableAttribute(name); |
| 2595 | #endif |
| 2596 | |
| 2597 | return true; |
| 2598 | } |
| 2599 | #endif |
| 2600 | |
| 2601 | #ifdef DUMP_NODE_STATISTICS |
| 2602 | bool Element::hasNamedNodeMap() const |
| 2603 | { |
| 2604 | return hasRareData() && elementRareData()->attributeMap(); |
| 2605 | } |
| 2606 | #endif |
| 2607 | |
| 2608 | inline void Element::updateName(const AtomicString& oldName, const AtomicString& newName) |
| 2609 | { |
| 2610 | if (!inDocument() || isInShadowTree()) |
| 2611 | return; |
| 2612 | |
| 2613 | if (oldName == newName) |
| 2614 | return; |
| 2615 | |
| 2616 | if (shouldRegisterAsNamedItem()) |
| 2617 | updateNamedItemRegistration(oldName, newName); |
| 2618 | } |
| 2619 | |
| 2620 | inline void Element::updateId(const AtomicString& oldId, const AtomicString& newId) |
| 2621 | { |
| 2622 | if (!isInTreeScope()) |
| 2623 | return; |
| 2624 | |
| 2625 | if (oldId == newId) |
| 2626 | return; |
| 2627 | |
| 2628 | updateId(treeScope(), oldId, newId); |
| 2629 | } |
| 2630 | |
| 2631 | inline void Element::updateId(TreeScope* scope, const AtomicString& oldId, const AtomicString& newId) |
| 2632 | { |
| 2633 | ASSERT(isInTreeScope()); |
| 2634 | ASSERT(oldId != newId); |
| 2635 | |
| 2636 | if (!oldId.isEmpty()) |
| 2637 | scope->removeElementById(oldId, this); |
| 2638 | if (!newId.isEmpty()) |
| 2639 | scope->addElementById(newId, this); |
| 2640 | |
| 2641 | if (shouldRegisterAsExtraNamedItem()) |
| 2642 | updateExtraNamedItemRegistration(oldId, newId); |
| 2643 | } |
| 2644 | |
| 2645 | void Element::updateLabel(TreeScope* scope, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue) |
| 2646 | { |
| 2647 | ASSERT(hasTagName(labelTag)); |
| 2648 | |
| 2649 | if (!inDocument()) |
| 2650 | return; |
| 2651 | |
| 2652 | if (oldForAttributeValue == newForAttributeValue) |
| 2653 | return; |
| 2654 | |
| 2655 | if (!oldForAttributeValue.isEmpty()) |
| 2656 | scope->removeLabel(oldForAttributeValue, static_cast<HTMLLabelElement*>(this)); |
| 2657 | if (!newForAttributeValue.isEmpty()) |
| 2658 | scope->addLabel(newForAttributeValue, static_cast<HTMLLabelElement*>(this)); |
| 2659 | } |
| 2660 | |
| 2661 | void Element::willModifyAttribute(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue) |
| 2662 | { |
| 2663 | if (isIdAttributeName(name)) |
| 2664 | updateId(oldValue, newValue); |
| 2665 | else if (name == HTMLNames::nameAttr) |
| 2666 | updateName(oldValue, newValue); |
| 2667 | else if (name == HTMLNames::forAttr && hasTagName(labelTag)) { |
| 2668 | TreeScope* scope = treeScope(); |
| 2669 | if (scope->shouldCacheLabelsByForAttribute()) |
| 2670 | updateLabel(scope, oldValue, newValue); |
| 2671 | } |
| 2672 | |
| 2673 | if (oldValue != newValue) { |
| 2674 | if (attached() && document()->styleResolver() && document()->styleResolver()->hasSelectorForAttribute(name.localName())) |
| 2675 | setNeedsStyleRecalc(); |
| 2676 | } |
| 2677 | |
| 2678 | if (OwnPtr<MutationObserverInterestGroup> recipients = MutationObserverInterestGroup::createForAttributesMutation(this, name)) |
| 2679 | recipients->enqueueMutationRecord(MutationRecord::createAttributes(this, name, oldValue)); |
| 2680 | |
| 2681 | InspectorInstrumentation::willModifyDOMAttr(document(), this, oldValue, newValue); |
| 2682 | } |
| 2683 | |
| 2684 | void Element::didAddAttribute(const QualifiedName& name, const AtomicString& value) |
| 2685 | { |
| 2686 | attributeChanged(name, value); |
| 2687 | InspectorInstrumentation::didModifyDOMAttr(document(), this, name.localName(), value); |
| 2688 | dispatchSubtreeModifiedEvent(); |
| 2689 | } |
| 2690 | |
| 2691 | void Element::didModifyAttribute(const QualifiedName& name, const AtomicString& value) |
| 2692 | { |
| 2693 | attributeChanged(name, value); |
| 2694 | InspectorInstrumentation::didModifyDOMAttr(document(), this, name.localName(), value); |
| 2695 | // Do not dispatch a DOMSubtreeModified event here; see bug 81141. |
| 2696 | } |
| 2697 | |
| 2698 | void Element::didRemoveAttribute(const QualifiedName& name) |
| 2699 | { |
| 2700 | attributeChanged(name, nullAtom); |
| 2701 | InspectorInstrumentation::didRemoveDOMAttr(document(), this, name.localName()); |
| 2702 | dispatchSubtreeModifiedEvent(); |
| 2703 | } |
| 2704 | |
| 2705 | |
| 2706 | void Element::updateNamedItemRegistration(const AtomicString& oldName, const AtomicString& newName) |
| 2707 | { |
| 2708 | if (!document()->isHTMLDocument()) |
| 2709 | return; |
| 2710 | |
| 2711 | if (!oldName.isEmpty()) |
| 2712 | toHTMLDocument(document())->removeNamedItem(oldName); |
| 2713 | |
| 2714 | if (!newName.isEmpty()) |
| 2715 | toHTMLDocument(document())->addNamedItem(newName); |
| 2716 | } |
| 2717 | |
| 2718 | void Element::updateExtraNamedItemRegistration(const AtomicString& oldId, const AtomicString& newId) |
| 2719 | { |
| 2720 | if (!document()->isHTMLDocument()) |
| 2721 | return; |
| 2722 | |
| 2723 | if (!oldId.isEmpty()) |
| 2724 | toHTMLDocument(document())->removeExtraNamedItem(oldId); |
| 2725 | |
| 2726 | if (!newId.isEmpty()) |
| 2727 | toHTMLDocument(document())->addExtraNamedItem(newId); |
| 2728 | } |
| 2729 | |
| 2730 | PassRefPtr<HTMLCollection> Element::ensureCachedHTMLCollection(CollectionType type) |
| 2731 | { |
| 2732 | if (HTMLCollection* collection = cachedHTMLCollection(type)) |
| 2733 | return collection; |
| 2734 | |
| 2735 | RefPtr<HTMLCollection> collection; |
| 2736 | if (type == TableRows) { |
| 2737 | ASSERT(hasTagName(tableTag)); |
| 2738 | return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLTableRowsCollection>(this, type); |
| 2739 | } else if (type == SelectOptions) { |
| 2740 | ASSERT(hasTagName(selectTag)); |
| 2741 | return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLOptionsCollection>(this, type); |
| 2742 | } else if (type == FormControls) { |
| 2743 | ASSERT(hasTagName(formTag) || hasTagName(fieldsetTag)); |
| 2744 | return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLFormControlsCollection>(this, type); |
| 2745 | } |
| 2746 | return ensureRareData()->ensureNodeLists()->addCacheWithAtomicName<HTMLCollection>(this, type); |
| 2747 | } |
| 2748 | |
| 2749 | HTMLCollection* Element::cachedHTMLCollection(CollectionType type) |
| 2750 | { |
| 2751 | return hasRareData() && rareData()->nodeLists() ? rareData()->nodeLists()->cacheWithAtomicName<HTMLCollection>(type) : 0; |
| 2752 | } |
| 2753 | |
| 2754 | IntSize Element::savedLayerScrollOffset() const |
| 2755 | { |
| 2756 | return hasRareData() ? elementRareData()->savedLayerScrollOffset() : IntSize(); |
| 2757 | } |
| 2758 | |
| 2759 | void Element::setSavedLayerScrollOffset(const IntSize& size) |
| 2760 | { |
| 2761 | if (size.isZero() && !hasRareData()) |
| 2762 | return; |
| 2763 | ensureElementRareData()->setSavedLayerScrollOffset(size); |
| 2764 | } |
| 2765 | |
| 2766 | PassRefPtr<Attr> Element::attrIfExists(const QualifiedName& name) |
| 2767 | { |
| 2768 | if (AttrNodeList* attrNodeList = attrNodeListForElement(this)) |
| 2769 | return findAttrNodeInList(attrNodeList, name); |
| 2770 | return 0; |
| 2771 | } |
| 2772 | |
| 2773 | PassRefPtr<Attr> Element::ensureAttr(const QualifiedName& name) |
| 2774 | { |
| 2775 | AttrNodeList* attrNodeList = ensureAttrNodeListForElement(this); |
| 2776 | RefPtr<Attr> attrNode = findAttrNodeInList(attrNodeList, name); |
| 2777 | if (!attrNode) { |
| 2778 | attrNode = Attr::create(this, name); |
| 2779 | treeScope()->adoptIfNeeded(attrNode.get()); |
| 2780 | attrNodeList->append(attrNode); |
| 2781 | } |
| 2782 | return attrNode.release(); |
| 2783 | } |
| 2784 | |
| 2785 | void Element::detachAttrNodeFromElementWithValue(Attr* attrNode, const AtomicString& value) |
| 2786 | { |
| 2787 | ASSERT(hasSyntheticAttrChildNodes()); |
| 2788 | attrNode->detachFromElementWithValue(value); |
| 2789 | |
| 2790 | AttrNodeList* attrNodeList = attrNodeListForElement(this); |
| 2791 | for (unsigned i = 0; i < attrNodeList->size(); ++i) { |
| 2792 | if (attrNodeList->at(i)->qualifiedName() == attrNode->qualifiedName()) { |
| 2793 | attrNodeList->remove(i); |
| 2794 | if (attrNodeList->isEmpty()) |
| 2795 | removeAttrNodeListForElement(this); |
| 2796 | return; |
| 2797 | } |
| 2798 | } |
| 2799 | ASSERT_NOT_REACHED(); |
| 2800 | } |
| 2801 | |
| 2802 | void Element::detachAllAttrNodesFromElement() |
| 2803 | { |
| 2804 | AttrNodeList* attrNodeList = attrNodeListForElement(this); |
| 2805 | ASSERT(attrNodeList); |
| 2806 | |
| 2807 | for (unsigned i = 0; i < attributeCount(); ++i) { |
| 2808 | const Attribute* attribute = attributeItem(i); |
| 2809 | if (RefPtr<Attr> attrNode = findAttrNodeInList(attrNodeList, attribute->name())) |
| 2810 | attrNode->detachFromElementWithValue(attribute->value()); |
| 2811 | } |
| 2812 | |
| 2813 | removeAttrNodeListForElement(this); |
| 2814 | } |
| 2815 | |
| 2816 | void Element::willRecalcStyle(StyleChange) |
| 2817 | { |
| 2818 | ASSERT(hasCustomStyleCallbacks()); |
| 2819 | } |
| 2820 | |
| 2821 | void Element::didRecalcStyle(StyleChange) |
| 2822 | { |
| 2823 | ASSERT(hasCustomStyleCallbacks()); |
| 2824 | } |
| 2825 | |
| 2826 | |
| 2827 | PassRefPtr<RenderStyle> Element::customStyleForRenderer() |
| 2828 | { |
| 2829 | ASSERT(hasCustomStyleCallbacks()); |
| 2830 | return 0; |
| 2831 | } |
| 2832 | |
| 2833 | void Element::cloneAttributesFromElement(const Element& other) |
| 2834 | { |
| 2835 | if (hasSyntheticAttrChildNodes()) |
| 2836 | detachAllAttrNodesFromElement(); |
| 2837 | |
| 2838 | other.synchronizeAllAttributes(); |
| 2839 | if (!other.m_elementData) { |
| 2840 | m_elementData.clear(); |
| 2841 | return; |
| 2842 | } |
| 2843 | |
| 2844 | const AtomicString& oldID = getIdAttribute(); |
| 2845 | const AtomicString& newID = other.getIdAttribute(); |
| 2846 | |
| 2847 | if (!oldID.isNull() || !newID.isNull()) |
| 2848 | updateId(oldID, newID); |
| 2849 | |
| 2850 | const AtomicString& oldName = getNameAttribute(); |
| 2851 | const AtomicString& newName = other.getNameAttribute(); |
| 2852 | |
| 2853 | if (!oldName.isNull() || !newName.isNull()) |
| 2854 | updateName(oldName, newName); |
| 2855 | |
| 2856 | // If 'other' has a mutable ElementData, convert it to an immutable one so we can share it between both elements. |
| 2857 | // We can only do this if there is no CSSOM wrapper for other's inline style, and there are no presentation attributes. |
| 2858 | if (other.m_elementData->isUnique() |
| 2859 | && !other.m_elementData->presentationAttributeStyle() |
| 2860 | && (!other.m_elementData->inlineStyle() || !other.m_elementData->inlineStyle()->hasCSSOMWrapper())) |
| 2861 | const_cast<Element&>(other).m_elementData = static_cast<const UniqueElementData*>(other.m_elementData.get())->makeShareableCopy(); |
| 2862 | |
| 2863 | if (!other.m_elementData->isUnique()) |
| 2864 | m_elementData = other.m_elementData; |
| 2865 | else |
| 2866 | m_elementData = other.m_elementData->makeUniqueCopy(); |
| 2867 | |
| 2868 | for (unsigned i = 0; i < m_elementData->length(); ++i) { |
| 2869 | const Attribute* attribute = const_cast<const ElementData*>(m_elementData.get())->attributeItem(i); |
| 2870 | attributeChangedFromParserOrByCloning(attribute->name(), attribute->value(), ModifiedByCloning); |
| 2871 | } |
| 2872 | } |
| 2873 | |
| 2874 | void Element::cloneDataFromElement(const Element& other) |
| 2875 | { |
| 2876 | cloneAttributesFromElement(other); |
| 2877 | copyNonAttributePropertiesFromElement(other); |
| 2878 | } |
| 2879 | |
| 2880 | void Element::createUniqueElementData() |
| 2881 | { |
| 2882 | if (!m_elementData) |
| 2883 | m_elementData = UniqueElementData::create(); |
| 2884 | else { |
| 2885 | ASSERT(!m_elementData->isUnique()); |
| 2886 | m_elementData = static_cast<ShareableElementData*>(m_elementData.get())->makeUniqueCopy(); |
| 2887 | } |
| 2888 | } |
| 2889 | |
| 2890 | void Element::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const |
| 2891 | { |
| 2892 | MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM); |
| 2893 | ContainerNode::reportMemoryUsage(memoryObjectInfo); |
| 2894 | info.addMember(m_tagName, "tagName"); |
| 2895 | info.addMember(m_elementData, "elementData"); |
| 2896 | } |
| 2897 | |
Torne (Richard Coles) | 81a5157 | 2013-05-13 16:52:28 +0100 | [diff] [blame] | 2898 | InputMethodContext* Element::getInputContext() |
| 2899 | { |
| 2900 | return ensureElementRareData()->ensureInputMethodContext(toHTMLElement(this)); |
| 2901 | } |
| 2902 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 2903 | #if ENABLE(SVG) |
| 2904 | bool Element::hasPendingResources() const |
| 2905 | { |
| 2906 | return hasRareData() && elementRareData()->hasPendingResources(); |
| 2907 | } |
| 2908 | |
| 2909 | void Element::setHasPendingResources() |
| 2910 | { |
| 2911 | ensureElementRareData()->setHasPendingResources(true); |
| 2912 | } |
| 2913 | |
| 2914 | void Element::clearHasPendingResources() |
| 2915 | { |
| 2916 | ensureElementRareData()->setHasPendingResources(false); |
| 2917 | } |
| 2918 | #endif |
| 2919 | |
| 2920 | void ElementData::deref() |
| 2921 | { |
| 2922 | if (!derefBase()) |
| 2923 | return; |
| 2924 | |
| 2925 | if (m_isUnique) |
| 2926 | delete static_cast<UniqueElementData*>(this); |
| 2927 | else |
| 2928 | delete static_cast<ShareableElementData*>(this); |
| 2929 | } |
| 2930 | |
| 2931 | ElementData::ElementData() |
| 2932 | : m_isUnique(true) |
| 2933 | , m_arraySize(0) |
| 2934 | , m_presentationAttributeStyleIsDirty(false) |
| 2935 | , m_styleAttributeIsDirty(false) |
| 2936 | #if ENABLE(SVG) |
| 2937 | , m_animatedSVGAttributesAreDirty(false) |
| 2938 | #endif |
| 2939 | { |
| 2940 | } |
| 2941 | |
| 2942 | ElementData::ElementData(unsigned arraySize) |
| 2943 | : m_isUnique(false) |
| 2944 | , m_arraySize(arraySize) |
| 2945 | , m_presentationAttributeStyleIsDirty(false) |
| 2946 | , m_styleAttributeIsDirty(false) |
| 2947 | #if ENABLE(SVG) |
| 2948 | , m_animatedSVGAttributesAreDirty(false) |
| 2949 | #endif |
| 2950 | { |
| 2951 | } |
| 2952 | |
| 2953 | struct SameSizeAsElementData : public RefCounted<SameSizeAsElementData> { |
| 2954 | unsigned bitfield; |
| 2955 | void* refPtrs[3]; |
| 2956 | }; |
| 2957 | |
| 2958 | COMPILE_ASSERT(sizeof(ElementData) == sizeof(SameSizeAsElementData), element_attribute_data_should_stay_small); |
| 2959 | |
| 2960 | static size_t sizeForShareableElementDataWithAttributeCount(unsigned count) |
| 2961 | { |
| 2962 | return sizeof(ShareableElementData) + sizeof(Attribute) * count; |
| 2963 | } |
| 2964 | |
| 2965 | PassRefPtr<ShareableElementData> ShareableElementData::createWithAttributes(const Vector<Attribute>& attributes) |
| 2966 | { |
| 2967 | void* slot = WTF::fastMalloc(sizeForShareableElementDataWithAttributeCount(attributes.size())); |
| 2968 | return adoptRef(new (slot) ShareableElementData(attributes)); |
| 2969 | } |
| 2970 | |
| 2971 | PassRefPtr<UniqueElementData> UniqueElementData::create() |
| 2972 | { |
| 2973 | return adoptRef(new UniqueElementData); |
| 2974 | } |
| 2975 | |
| 2976 | ShareableElementData::ShareableElementData(const Vector<Attribute>& attributes) |
| 2977 | : ElementData(attributes.size()) |
| 2978 | { |
| 2979 | for (unsigned i = 0; i < m_arraySize; ++i) |
| 2980 | new (&m_attributeArray[i]) Attribute(attributes[i]); |
| 2981 | } |
| 2982 | |
| 2983 | ShareableElementData::~ShareableElementData() |
| 2984 | { |
| 2985 | for (unsigned i = 0; i < m_arraySize; ++i) |
| 2986 | m_attributeArray[i].~Attribute(); |
| 2987 | } |
| 2988 | |
| 2989 | ShareableElementData::ShareableElementData(const UniqueElementData& other) |
| 2990 | : ElementData(other, false) |
| 2991 | { |
| 2992 | ASSERT(!other.m_presentationAttributeStyle); |
| 2993 | |
| 2994 | if (other.m_inlineStyle) { |
| 2995 | ASSERT(!other.m_inlineStyle->hasCSSOMWrapper()); |
| 2996 | m_inlineStyle = other.m_inlineStyle->immutableCopyIfNeeded(); |
| 2997 | } |
| 2998 | |
| 2999 | for (unsigned i = 0; i < m_arraySize; ++i) |
| 3000 | new (&m_attributeArray[i]) Attribute(other.m_attributeVector.at(i)); |
| 3001 | } |
| 3002 | |
| 3003 | ElementData::ElementData(const ElementData& other, bool isUnique) |
| 3004 | : m_isUnique(isUnique) |
| 3005 | , m_arraySize(isUnique ? 0 : other.length()) |
| 3006 | , m_presentationAttributeStyleIsDirty(other.m_presentationAttributeStyleIsDirty) |
| 3007 | , m_styleAttributeIsDirty(other.m_styleAttributeIsDirty) |
| 3008 | #if ENABLE(SVG) |
| 3009 | , m_animatedSVGAttributesAreDirty(other.m_animatedSVGAttributesAreDirty) |
| 3010 | #endif |
| 3011 | , m_classNames(other.m_classNames) |
| 3012 | , m_idForStyleResolution(other.m_idForStyleResolution) |
| 3013 | { |
| 3014 | // NOTE: The inline style is copied by the subclass copy constructor since we don't know what to do with it here. |
| 3015 | } |
| 3016 | |
| 3017 | UniqueElementData::UniqueElementData() |
| 3018 | { |
| 3019 | } |
| 3020 | |
| 3021 | UniqueElementData::UniqueElementData(const UniqueElementData& other) |
| 3022 | : ElementData(other, true) |
| 3023 | , m_presentationAttributeStyle(other.m_presentationAttributeStyle) |
| 3024 | , m_attributeVector(other.m_attributeVector) |
| 3025 | { |
| 3026 | m_inlineStyle = other.m_inlineStyle ? other.m_inlineStyle->copy() : 0; |
| 3027 | } |
| 3028 | |
| 3029 | UniqueElementData::UniqueElementData(const ShareableElementData& other) |
| 3030 | : ElementData(other, true) |
| 3031 | { |
| 3032 | // An ShareableElementData should never have a mutable inline StylePropertySet attached. |
| 3033 | ASSERT(!other.m_inlineStyle || !other.m_inlineStyle->isMutable()); |
| 3034 | m_inlineStyle = other.m_inlineStyle; |
| 3035 | |
| 3036 | m_attributeVector.reserveCapacity(other.length()); |
| 3037 | for (unsigned i = 0; i < other.length(); ++i) |
| 3038 | m_attributeVector.uncheckedAppend(other.m_attributeArray[i]); |
| 3039 | } |
| 3040 | |
| 3041 | PassRefPtr<UniqueElementData> ElementData::makeUniqueCopy() const |
| 3042 | { |
| 3043 | if (isUnique()) |
| 3044 | return adoptRef(new UniqueElementData(static_cast<const UniqueElementData&>(*this))); |
| 3045 | return adoptRef(new UniqueElementData(static_cast<const ShareableElementData&>(*this))); |
| 3046 | } |
| 3047 | |
| 3048 | PassRefPtr<ShareableElementData> UniqueElementData::makeShareableCopy() const |
| 3049 | { |
| 3050 | void* slot = WTF::fastMalloc(sizeForShareableElementDataWithAttributeCount(m_attributeVector.size())); |
| 3051 | return adoptRef(new (slot) ShareableElementData(*this)); |
| 3052 | } |
| 3053 | |
| 3054 | void UniqueElementData::addAttribute(const QualifiedName& attributeName, const AtomicString& value) |
| 3055 | { |
| 3056 | m_attributeVector.append(Attribute(attributeName, value)); |
| 3057 | } |
| 3058 | |
| 3059 | void UniqueElementData::removeAttribute(size_t index) |
| 3060 | { |
| 3061 | ASSERT_WITH_SECURITY_IMPLICATION(index < length()); |
| 3062 | m_attributeVector.remove(index); |
| 3063 | } |
| 3064 | |
| 3065 | bool ElementData::isEquivalent(const ElementData* other) const |
| 3066 | { |
| 3067 | if (!other) |
| 3068 | return isEmpty(); |
| 3069 | |
| 3070 | unsigned len = length(); |
| 3071 | if (len != other->length()) |
| 3072 | return false; |
| 3073 | |
| 3074 | for (unsigned i = 0; i < len; i++) { |
| 3075 | const Attribute* attribute = attributeItem(i); |
| 3076 | const Attribute* otherAttr = other->getAttributeItem(attribute->name()); |
| 3077 | if (!otherAttr || attribute->value() != otherAttr->value()) |
| 3078 | return false; |
| 3079 | } |
| 3080 | |
| 3081 | return true; |
| 3082 | } |
| 3083 | |
| 3084 | void ElementData::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const |
| 3085 | { |
| 3086 | size_t actualSize = m_isUnique ? sizeof(ElementData) : sizeForShareableElementDataWithAttributeCount(m_arraySize); |
| 3087 | MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM, actualSize); |
| 3088 | info.addMember(m_inlineStyle, "inlineStyle"); |
| 3089 | info.addMember(m_classNames, "classNames"); |
| 3090 | info.addMember(m_idForStyleResolution, "idForStyleResolution"); |
| 3091 | if (m_isUnique) { |
| 3092 | const UniqueElementData* uniqueThis = static_cast<const UniqueElementData*>(this); |
| 3093 | info.addMember(uniqueThis->m_presentationAttributeStyle, "presentationAttributeStyle"); |
| 3094 | info.addMember(uniqueThis->m_attributeVector, "attributeVector"); |
| 3095 | } |
| 3096 | for (unsigned i = 0, len = length(); i < len; i++) |
| 3097 | info.addMember(*attributeItem(i), "*attributeItem"); |
| 3098 | } |
| 3099 | |
Torne (Richard Coles) | e524955 | 2013-05-15 11:35:13 +0100 | [diff] [blame^] | 3100 | size_t ElementData::getAttrIndex(Attr* attr) const |
| 3101 | { |
| 3102 | // This relies on the fact that Attr's QualifiedName == the Attribute's name. |
| 3103 | for (unsigned i = 0; i < length(); ++i) { |
| 3104 | if (attributeItem(i)->name() == attr->qualifiedName()) |
| 3105 | return i; |
| 3106 | } |
| 3107 | return notFound; |
| 3108 | } |
| 3109 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 3110 | size_t ElementData::getAttributeItemIndexSlowCase(const AtomicString& name, bool shouldIgnoreAttributeCase) const |
| 3111 | { |
| 3112 | // Continue to checking case-insensitively and/or full namespaced names if necessary: |
| 3113 | for (unsigned i = 0; i < length(); ++i) { |
| 3114 | const Attribute* attribute = attributeItem(i); |
| 3115 | if (!attribute->name().hasPrefix()) { |
| 3116 | if (shouldIgnoreAttributeCase && equalIgnoringCase(name, attribute->localName())) |
| 3117 | return i; |
| 3118 | } else { |
| 3119 | // FIXME: Would be faster to do this comparison without calling toString, which |
| 3120 | // generates a temporary string by concatenation. But this branch is only reached |
| 3121 | // if the attribute name has a prefix, which is rare in HTML. |
| 3122 | if (equalPossiblyIgnoringCase(name, attribute->name().toString(), shouldIgnoreAttributeCase)) |
| 3123 | return i; |
| 3124 | } |
| 3125 | } |
| 3126 | return notFound; |
| 3127 | } |
| 3128 | |
| 3129 | Attribute* UniqueElementData::getAttributeItem(const QualifiedName& name) |
| 3130 | { |
| 3131 | for (unsigned i = 0; i < length(); ++i) { |
| 3132 | if (m_attributeVector.at(i).name().matches(name)) |
| 3133 | return &m_attributeVector.at(i); |
| 3134 | } |
| 3135 | return 0; |
| 3136 | } |
| 3137 | |
| 3138 | Attribute* UniqueElementData::attributeItem(unsigned index) |
| 3139 | { |
| 3140 | ASSERT_WITH_SECURITY_IMPLICATION(index < length()); |
| 3141 | return &m_attributeVector.at(index); |
| 3142 | } |
| 3143 | |
| 3144 | } // namespace WebCore |