| /* | |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) | |
| * (C) 2001 Peter Kelly (pmk@post.com) | |
| * (C) 2001 Dirk Mueller (mueller@kde.org) | |
| * (C) 2007 David Smith (catfish.man@gmail.com) | |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. | |
| * (C) 2007 Eric Seidel (eric@webkit.org) | |
| * | |
| * This library is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Library General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2 of the License, or (at your option) any later version. | |
| * | |
| * This library is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Library General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Library General Public License | |
| * along with this library; see the file COPYING.LIB. If not, write to | |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| * Boston, MA 02110-1301, USA. | |
| */ | |
| #include "config.h" | |
| #include "Element.h" | |
| #include "AXObjectCache.h" | |
| #include "Attr.h" | |
| #include "CSSParser.h" | |
| #include "CSSSelectorList.h" | |
| #include "CSSStyleSelector.h" | |
| #include "CString.h" | |
| #include "ClientRect.h" | |
| #include "ClientRectList.h" | |
| #include "Document.h" | |
| #include "DocumentFragment.h" | |
| #include "ElementRareData.h" | |
| #include "ExceptionCode.h" | |
| #include "FocusController.h" | |
| #include "Frame.h" | |
| #include "FrameView.h" | |
| #include "HTMLElement.h" | |
| #include "HTMLNames.h" | |
| #include "HTMLTokenizer.h" | |
| #include "InspectorController.h" | |
| #include "NamedNodeMap.h" | |
| #include "NodeList.h" | |
| #include "NodeRenderStyle.h" | |
| #include "Page.h" | |
| #include "RenderView.h" | |
| #include "RenderWidget.h" | |
| #include "TextIterator.h" | |
| #include "XMLNames.h" | |
| #include "XMLTokenizer.h" | |
| #if ENABLE(SVG) | |
| #include "SVGNames.h" | |
| #endif | |
| namespace WebCore { | |
| using namespace HTMLNames; | |
| using namespace XMLNames; | |
| Element::Element(const QualifiedName& tagName, Document* document, ConstructionType type) | |
| : ContainerNode(document, type) | |
| , m_tagName(tagName) | |
| { | |
| } | |
| PassRefPtr<Element> Element::create(const QualifiedName& tagName, Document* document) | |
| { | |
| return adoptRef(new Element(tagName, document, CreateElement)); | |
| } | |
| Element::~Element() | |
| { | |
| if (namedAttrMap) | |
| namedAttrMap->detachFromElement(); | |
| } | |
| inline ElementRareData* Element::rareData() const | |
| { | |
| ASSERT(hasRareData()); | |
| return static_cast<ElementRareData*>(NodeRareData::rareDataFromMap(this)); | |
| } | |
| inline ElementRareData* Element::ensureRareData() | |
| { | |
| return static_cast<ElementRareData*>(Node::ensureRareData()); | |
| } | |
| NodeRareData* Element::createRareData() | |
| { | |
| return new ElementRareData; | |
| } | |
| PassRefPtr<DocumentFragment> Element::createContextualFragment(const String& markup, FragmentScriptingPermission scriptingPermission) | |
| { | |
| RefPtr<DocumentFragment> fragment = DocumentFragment::create(document()); | |
| if (document()->isHTMLDocument()) | |
| parseHTMLDocumentFragment(markup, fragment.get(), scriptingPermission); | |
| else { | |
| if (!parseXMLDocumentFragment(markup, fragment.get(), this, scriptingPermission)) | |
| // FIXME: We should propagate a syntax error exception out here. | |
| return 0; | |
| } | |
| // Exceptions are ignored because none ought to happen here. | |
| ExceptionCode ignoredExceptionCode; | |
| // We need to pop <html> and <body> elements and remove <head> to | |
| // accommodate folks passing complete HTML documents to make the | |
| // child of an element. | |
| RefPtr<Node> nextNode; | |
| for (RefPtr<Node> node = fragment->firstChild(); node; node = nextNode) { | |
| nextNode = node->nextSibling(); | |
| if (node->hasTagName(htmlTag) || node->hasTagName(bodyTag)) { | |
| Node* firstChild = node->firstChild(); | |
| if (firstChild) | |
| nextNode = firstChild; | |
| RefPtr<Node> nextChild; | |
| for (RefPtr<Node> child = firstChild; child; child = nextChild) { | |
| nextChild = child->nextSibling(); | |
| node->removeChild(child.get(), ignoredExceptionCode); | |
| ASSERT(!ignoredExceptionCode); | |
| fragment->insertBefore(child, node.get(), ignoredExceptionCode); | |
| ASSERT(!ignoredExceptionCode); | |
| } | |
| fragment->removeChild(node.get(), ignoredExceptionCode); | |
| ASSERT(!ignoredExceptionCode); | |
| } else if (node->hasTagName(headTag)) { | |
| fragment->removeChild(node.get(), ignoredExceptionCode); | |
| ASSERT(!ignoredExceptionCode); | |
| } | |
| } | |
| return fragment.release(); | |
| } | |
| PassRefPtr<Node> Element::cloneNode(bool deep) | |
| { | |
| return deep ? cloneElementWithChildren() : cloneElementWithoutChildren(); | |
| } | |
| PassRefPtr<Element> Element::cloneElementWithChildren() | |
| { | |
| RefPtr<Element> clone = cloneElementWithoutChildren(); | |
| cloneChildNodes(clone.get()); | |
| return clone.release(); | |
| } | |
| PassRefPtr<Element> Element::cloneElementWithoutChildren() | |
| { | |
| RefPtr<Element> clone = document()->createElement(tagQName(), false); | |
| // This will catch HTML elements in the wrong namespace that are not correctly copied. | |
| // This is a sanity check as HTML overloads some of the DOM methods. | |
| ASSERT(isHTMLElement() == clone->isHTMLElement()); | |
| clone->copyNonAttributeProperties(this); | |
| // Clone attributes. | |
| if (namedAttrMap) | |
| clone->attributes()->setAttributes(*attributes(true)); // Call attributes(true) to force attribute synchronization to occur (for svg and style) before cloning happens. | |
| return clone.release(); | |
| } | |
| void Element::removeAttribute(const QualifiedName& name, ExceptionCode& ec) | |
| { | |
| if (namedAttrMap) { | |
| ec = 0; | |
| namedAttrMap->removeNamedItem(name, ec); | |
| if (ec == NOT_FOUND_ERR) | |
| ec = 0; | |
| } | |
| } | |
| void Element::setAttribute(const QualifiedName& name, const AtomicString& value) | |
| { | |
| ExceptionCode ec; | |
| setAttribute(name, value, ec); | |
| } | |
| void Element::setCStringAttribute(const QualifiedName& name, const char* cStringValue) | |
| { | |
| ExceptionCode ec; | |
| setAttribute(name, AtomicString(cStringValue), ec); | |
| } | |
| void Element::setBooleanAttribute(const QualifiedName& name, bool b) | |
| { | |
| if (b) | |
| setAttribute(name, name.localName()); | |
| else { | |
| ExceptionCode ex; | |
| removeAttribute(name, ex); | |
| } | |
| } | |
| // Virtual function, defined in base class. | |
| NamedNodeMap* Element::attributes() const | |
| { | |
| return attributes(false); | |
| } | |
| Node::NodeType Element::nodeType() const | |
| { | |
| return ELEMENT_NODE; | |
| } | |
| const AtomicString& Element::getIDAttribute() const | |
| { | |
| return namedAttrMap ? namedAttrMap->id() : nullAtom; | |
| } | |
| bool Element::hasAttribute(const QualifiedName& name) const | |
| { | |
| return hasAttributeNS(name.namespaceURI(), name.localName()); | |
| } | |
| const AtomicString& Element::getAttribute(const QualifiedName& name) const | |
| { | |
| if (name == styleAttr && !m_isStyleAttributeValid) | |
| updateStyleAttribute(); | |
| #if ENABLE(SVG) | |
| if (!m_areSVGAttributesValid) | |
| updateAnimatedSVGAttribute(name); | |
| #endif | |
| if (namedAttrMap) | |
| if (Attribute* a = namedAttrMap->getAttributeItem(name)) | |
| return a->value(); | |
| return nullAtom; | |
| } | |
| void Element::scrollIntoView(bool alignToTop) | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| IntRect bounds = getRect(); | |
| if (renderer()) { | |
| // Align to the top / bottom and to the closest edge. | |
| if (alignToTop) | |
| renderer()->enclosingLayer()->scrollRectToVisible(bounds, false, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignTopAlways); | |
| else | |
| renderer()->enclosingLayer()->scrollRectToVisible(bounds, false, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignBottomAlways); | |
| } | |
| } | |
| void Element::scrollIntoViewIfNeeded(bool centerIfNeeded) | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| IntRect bounds = getRect(); | |
| if (renderer()) { | |
| if (centerIfNeeded) | |
| renderer()->enclosingLayer()->scrollRectToVisible(bounds, false, ScrollAlignment::alignCenterIfNeeded, ScrollAlignment::alignCenterIfNeeded); | |
| else | |
| renderer()->enclosingLayer()->scrollRectToVisible(bounds, false, ScrollAlignment::alignToEdgeIfNeeded, ScrollAlignment::alignToEdgeIfNeeded); | |
| } | |
| } | |
| void Element::scrollByUnits(int units, ScrollGranularity granularity) | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderObject *rend = renderer()) { | |
| if (rend->hasOverflowClip()) { | |
| ScrollDirection direction = ScrollDown; | |
| if (units < 0) { | |
| direction = ScrollUp; | |
| units = -units; | |
| } | |
| toRenderBox(rend)->layer()->scroll(direction, granularity, units); | |
| } | |
| } | |
| } | |
| void Element::scrollByLines(int lines) | |
| { | |
| scrollByUnits(lines, ScrollByLine); | |
| } | |
| void Element::scrollByPages(int pages) | |
| { | |
| scrollByUnits(pages, ScrollByPage); | |
| } | |
| static float localZoomForRenderer(RenderObject* renderer) | |
| { | |
| // FIXME: This does the wrong thing if two opposing zooms are in effect and canceled each | |
| // other out, but the alternative is that we'd have to crawl up the whole render tree every | |
| // time (or store an additional bit in the RenderStyle to indicate that a zoom was specified). | |
| float zoomFactor = 1.0f; | |
| if (renderer->style()->effectiveZoom() != 1.0f) { | |
| // Need to find the nearest enclosing RenderObject that set up | |
| // a differing zoom, and then we divide our result by it to eliminate the zoom. | |
| RenderObject* prev = renderer; | |
| for (RenderObject* curr = prev->parent(); curr; curr = curr->parent()) { | |
| if (curr->style()->effectiveZoom() != prev->style()->effectiveZoom()) { | |
| zoomFactor = prev->style()->zoom(); | |
| break; | |
| } | |
| prev = curr; | |
| } | |
| if (prev->isRenderView()) | |
| zoomFactor = prev->style()->zoom(); | |
| } | |
| return zoomFactor; | |
| } | |
| static int adjustForLocalZoom(int value, RenderObject* renderer) | |
| { | |
| float zoomFactor = localZoomForRenderer(renderer); | |
| if (zoomFactor == 1) | |
| return value; | |
| // Needed because computeLengthInt truncates (rather than rounds) when scaling up. | |
| if (zoomFactor > 1) | |
| value++; | |
| return static_cast<int>(value / zoomFactor); | |
| } | |
| int Element::offsetLeft() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBoxModelObject* rend = renderBoxModelObject()) | |
| return adjustForLocalZoom(rend->offsetLeft(), rend); | |
| return 0; | |
| } | |
| int Element::offsetTop() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBoxModelObject* rend = renderBoxModelObject()) | |
| return adjustForLocalZoom(rend->offsetTop(), rend); | |
| return 0; | |
| } | |
| int Element::offsetWidth() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBoxModelObject* rend = renderBoxModelObject()) | |
| return adjustForAbsoluteZoom(rend->offsetWidth(), rend); | |
| return 0; | |
| } | |
| int Element::offsetHeight() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBoxModelObject* rend = renderBoxModelObject()) | |
| return adjustForAbsoluteZoom(rend->offsetHeight(), rend); | |
| return 0; | |
| } | |
| Element* Element::offsetParent() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderObject* rend = renderer()) | |
| if (RenderObject* offsetParent = rend->offsetParent()) | |
| return static_cast<Element*>(offsetParent->node()); | |
| return 0; | |
| } | |
| int Element::clientLeft() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->clientLeft(), rend); | |
| return 0; | |
| } | |
| int Element::clientTop() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->clientTop(), rend); | |
| return 0; | |
| } | |
| int Element::clientWidth() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| // When in strict mode, clientWidth for the document element should return the width of the containing frame. | |
| // When in quirks mode, clientWidth for the body element should return the width of the containing frame. | |
| bool inCompatMode = document()->inCompatMode(); | |
| if ((!inCompatMode && document()->documentElement() == this) || | |
| (inCompatMode && isHTMLElement() && document()->body() == this)) { | |
| if (FrameView* view = document()->view()) { | |
| if (RenderView* renderView = document()->renderView()) | |
| return adjustForAbsoluteZoom(view->layoutWidth(), renderView); | |
| } | |
| } | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->clientWidth(), rend); | |
| return 0; | |
| } | |
| int Element::clientHeight() | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| // When in strict mode, clientHeight for the document element should return the height of the containing frame. | |
| // When in quirks mode, clientHeight for the body element should return the height of the containing frame. | |
| bool inCompatMode = document()->inCompatMode(); | |
| if ((!inCompatMode && document()->documentElement() == this) || | |
| (inCompatMode && isHTMLElement() && document()->body() == this)) { | |
| if (FrameView* view = document()->view()) { | |
| if (RenderView* renderView = document()->renderView()) | |
| return adjustForAbsoluteZoom(view->layoutHeight(), renderView); | |
| } | |
| } | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->clientHeight(), rend); | |
| return 0; | |
| } | |
| int Element::scrollLeft() const | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->scrollLeft(), rend); | |
| return 0; | |
| } | |
| int Element::scrollTop() const | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->scrollTop(), rend); | |
| return 0; | |
| } | |
| void Element::setScrollLeft(int newLeft) | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| rend->setScrollLeft(static_cast<int>(newLeft * rend->style()->effectiveZoom())); | |
| } | |
| void Element::setScrollTop(int newTop) | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| rend->setScrollTop(static_cast<int>(newTop * rend->style()->effectiveZoom())); | |
| } | |
| int Element::scrollWidth() const | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->scrollWidth(), rend); | |
| return 0; | |
| } | |
| int Element::scrollHeight() const | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (RenderBox* rend = renderBox()) | |
| return adjustForAbsoluteZoom(rend->scrollHeight(), rend); | |
| return 0; | |
| } | |
| PassRefPtr<ClientRectList> Element::getClientRects() const | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| RenderBoxModelObject* renderBoxModelObject = this->renderBoxModelObject(); | |
| if (!renderBoxModelObject) | |
| return ClientRectList::create(); | |
| // FIXME: Handle SVG elements. | |
| // FIXME: Handle table/inline-table with a caption. | |
| Vector<FloatQuad> quads; | |
| renderBoxModelObject->absoluteQuads(quads); | |
| if (FrameView* view = document()->view()) { | |
| IntRect visibleContentRect = view->visibleContentRect(); | |
| for (size_t i = 0; i < quads.size(); ++i) { | |
| quads[i].move(-visibleContentRect.x(), -visibleContentRect.y()); | |
| adjustFloatQuadForAbsoluteZoom(quads[i], renderBoxModelObject); | |
| } | |
| } | |
| return ClientRectList::create(quads); | |
| } | |
| PassRefPtr<ClientRect> Element::getBoundingClientRect() const | |
| { | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| RenderBoxModelObject* renderBoxModelObject = this->renderBoxModelObject(); | |
| if (!renderBoxModelObject) | |
| return ClientRect::create(); | |
| Vector<FloatQuad> quads; | |
| renderBoxModelObject->absoluteQuads(quads); | |
| if (quads.isEmpty()) | |
| return ClientRect::create(); | |
| IntRect result = quads[0].enclosingBoundingBox(); | |
| for (size_t i = 1; i < quads.size(); ++i) | |
| result.unite(quads[i].enclosingBoundingBox()); | |
| if (FrameView* view = document()->view()) { | |
| IntRect visibleContentRect = view->visibleContentRect(); | |
| result.move(-visibleContentRect.x(), -visibleContentRect.y()); | |
| } | |
| adjustIntRectForAbsoluteZoom(result, renderBoxModelObject); | |
| return ClientRect::create(result); | |
| } | |
| static inline bool shouldIgnoreAttributeCase(const Element* e) | |
| { | |
| return e && e->document()->isHTMLDocument() && e->isHTMLElement(); | |
| } | |
| const AtomicString& Element::getAttribute(const String& name) const | |
| { | |
| bool ignoreCase = shouldIgnoreAttributeCase(this); | |
| // Update the 'style' attribute if it's invalid and being requested: | |
| if (!m_isStyleAttributeValid && equalPossiblyIgnoringCase(name, styleAttr.localName(), ignoreCase)) | |
| updateStyleAttribute(); | |
| #if ENABLE(SVG) | |
| if (!m_areSVGAttributesValid) { | |
| // We're not passing a namespace argument on purpose. SVGNames::*Attr are defined w/o namespaces as well. | |
| updateAnimatedSVGAttribute(QualifiedName(nullAtom, name, nullAtom)); | |
| } | |
| #endif | |
| if (namedAttrMap) | |
| if (Attribute* attribute = namedAttrMap->getAttributeItem(name, ignoreCase)) | |
| return attribute->value(); | |
| return nullAtom; | |
| } | |
| const AtomicString& Element::getAttributeNS(const String& namespaceURI, const String& localName) const | |
| { | |
| return getAttribute(QualifiedName(nullAtom, localName, namespaceURI)); | |
| } | |
| void Element::setAttribute(const AtomicString& name, const AtomicString& value, ExceptionCode& ec) | |
| { | |
| if (!Document::isValidName(name)) { | |
| ec = INVALID_CHARACTER_ERR; | |
| return; | |
| } | |
| #if COMPILER(RVCT) | |
| const AtomicString localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; | |
| #else | |
| const AtomicString& localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; | |
| #endif | |
| // allocate attributemap if necessary | |
| Attribute* old = attributes(false)->getAttributeItem(localName, false); | |
| document()->incDOMTreeVersion(); | |
| if (localName == idAttributeName().localName()) | |
| updateId(old ? old->value() : nullAtom, value); | |
| if (old && value.isNull()) | |
| namedAttrMap->removeAttribute(old->name()); | |
| else if (!old && !value.isNull()) | |
| namedAttrMap->addAttribute(createAttribute(QualifiedName(nullAtom, localName, nullAtom), value)); | |
| else if (old && !value.isNull()) { | |
| old->setValue(value); | |
| attributeChanged(old); | |
| } | |
| #if ENABLE(INSPECTOR) | |
| if (Page* page = document()->page()) { | |
| if (InspectorController* inspectorController = page->inspectorController()) { | |
| if (!m_synchronizingStyleAttribute) | |
| inspectorController->didModifyDOMAttr(this); | |
| } | |
| } | |
| #endif | |
| } | |
| void Element::setAttribute(const QualifiedName& name, const AtomicString& value, ExceptionCode&) | |
| { | |
| document()->incDOMTreeVersion(); | |
| // allocate attributemap if necessary | |
| Attribute* old = attributes(false)->getAttributeItem(name); | |
| if (name == idAttributeName()) | |
| updateId(old ? old->value() : nullAtom, value); | |
| if (old && value.isNull()) | |
| namedAttrMap->removeAttribute(name); | |
| else if (!old && !value.isNull()) | |
| namedAttrMap->addAttribute(createAttribute(name, value)); | |
| else if (old) { | |
| old->setValue(value); | |
| attributeChanged(old); | |
| } | |
| #if ENABLE(INSPECTOR) | |
| if (Page* page = document()->page()) { | |
| if (InspectorController* inspectorController = page->inspectorController()) { | |
| if (!m_synchronizingStyleAttribute) | |
| inspectorController->didModifyDOMAttr(this); | |
| } | |
| } | |
| #endif | |
| } | |
| PassRefPtr<Attribute> Element::createAttribute(const QualifiedName& name, const AtomicString& value) | |
| { | |
| return Attribute::create(name, value); | |
| } | |
| void Element::attributeChanged(Attribute* attr, bool) | |
| { | |
| recalcStyleIfNeededAfterAttributeChanged(attr); | |
| updateAfterAttributeChanged(attr); | |
| } | |
| void Element::updateAfterAttributeChanged(Attribute* attr) | |
| { | |
| if (!AXObjectCache::accessibilityEnabled()) | |
| return; | |
| const QualifiedName& attrName = attr->name(); | |
| if (attrName == aria_activedescendantAttr) { | |
| // any change to aria-activedescendant attribute triggers accessibility focus change, but document focus remains intact | |
| document()->axObjectCache()->handleActiveDescendantChanged(renderer()); | |
| } else if (attrName == roleAttr) { | |
| // the role attribute can change at any time, and the AccessibilityObject must pick up these changes | |
| document()->axObjectCache()->handleAriaRoleChanged(renderer()); | |
| } else if (attrName == aria_valuenowAttr) { | |
| // If the valuenow attribute changes, AX clients need to be notified. | |
| document()->axObjectCache()->postNotification(renderer(), AXObjectCache::AXValueChanged, true); | |
| } else if (attrName == aria_labelAttr || attrName == aria_labeledbyAttr || attrName == altAttr || attrName == titleAttr) { | |
| // If the content of an element changes due to an attribute change, notify accessibility. | |
| document()->axObjectCache()->contentChanged(renderer()); | |
| } | |
| } | |
| void Element::recalcStyleIfNeededAfterAttributeChanged(Attribute* attr) | |
| { | |
| if (document()->attached() && document()->styleSelector()->hasSelectorForAttribute(attr->name().localName())) | |
| setNeedsStyleRecalc(); | |
| } | |
| // Returns true is the given attribute is an event handler. | |
| // We consider an event handler any attribute that begins with "on". | |
| // It is a simple solution that has the advantage of not requiring any | |
| // code or configuration change if a new event handler is defined. | |
| static bool isEventHandlerAttribute(const QualifiedName& name) | |
| { | |
| return name.namespaceURI().isNull() && name.localName().startsWith("on"); | |
| } | |
| static bool isAttributeToRemove(const QualifiedName& name, const AtomicString& value) | |
| { | |
| return (name.localName().endsWith(hrefAttr.localName()) || name == srcAttr || name == actionAttr) && protocolIsJavaScript(deprecatedParseURL(value)); | |
| } | |
| void Element::setAttributeMap(PassRefPtr<NamedNodeMap> list, FragmentScriptingPermission scriptingPermission) | |
| { | |
| document()->incDOMTreeVersion(); | |
| // If setting the whole map changes the id attribute, we need to call updateId. | |
| const QualifiedName& idName = idAttributeName(); | |
| Attribute* oldId = namedAttrMap ? namedAttrMap->getAttributeItem(idName) : 0; | |
| Attribute* newId = list ? list->getAttributeItem(idName) : 0; | |
| if (oldId || newId) | |
| updateId(oldId ? oldId->value() : nullAtom, newId ? newId->value() : nullAtom); | |
| if (namedAttrMap) | |
| namedAttrMap->m_element = 0; | |
| namedAttrMap = list; | |
| if (namedAttrMap) { | |
| namedAttrMap->m_element = this; | |
| // If the element is created as result of a paste or drag-n-drop operation | |
| // we want to remove all the script and event handlers. | |
| if (scriptingPermission == FragmentScriptingNotAllowed) { | |
| unsigned i = 0; | |
| while (i < namedAttrMap->length()) { | |
| const QualifiedName& attributeName = namedAttrMap->m_attributes[i]->name(); | |
| if (isEventHandlerAttribute(attributeName)) { | |
| namedAttrMap->m_attributes.remove(i); | |
| continue; | |
| } | |
| if (isAttributeToRemove(attributeName, namedAttrMap->m_attributes[i]->value())) | |
| namedAttrMap->m_attributes[i]->setValue(nullAtom); | |
| i++; | |
| } | |
| } | |
| unsigned len = namedAttrMap->length(); | |
| for (unsigned i = 0; i < len; i++) | |
| attributeChanged(namedAttrMap->m_attributes[i].get()); | |
| // FIXME: What about attributes that were in the old map that are not in the new map? | |
| } | |
| } | |
| bool Element::hasAttributes() const | |
| { | |
| if (!m_isStyleAttributeValid) | |
| updateStyleAttribute(); | |
| #if ENABLE(SVG) | |
| if (!m_areSVGAttributesValid) | |
| updateAnimatedSVGAttribute(anyQName()); | |
| #endif | |
| return namedAttrMap && namedAttrMap->length() > 0; | |
| } | |
| String Element::nodeName() const | |
| { | |
| return m_tagName.toString(); | |
| } | |
| String Element::nodeNamePreservingCase() const | |
| { | |
| return m_tagName.toString(); | |
| } | |
| void Element::setPrefix(const AtomicString& prefix, ExceptionCode& ec) | |
| { | |
| ec = 0; | |
| checkSetPrefix(prefix, ec); | |
| if (ec) | |
| return; | |
| m_tagName.setPrefix(prefix.isEmpty() ? AtomicString() : prefix); | |
| } | |
| KURL Element::baseURI() const | |
| { | |
| const AtomicString& baseAttribute = getAttribute(baseAttr); | |
| KURL base(KURL(), baseAttribute); | |
| if (!base.protocol().isEmpty()) | |
| return base; | |
| Node* parent = parentNode(); | |
| if (!parent) | |
| return base; | |
| const KURL& parentBase = parent->baseURI(); | |
| if (parentBase.isNull()) | |
| return base; | |
| return KURL(parentBase, baseAttribute); | |
| } | |
| void Element::createAttributeMap() const | |
| { | |
| namedAttrMap = NamedNodeMap::create(const_cast<Element*>(this)); | |
| } | |
| bool Element::isURLAttribute(Attribute*) const | |
| { | |
| return false; | |
| } | |
| const QualifiedName& Element::imageSourceAttributeName() const | |
| { | |
| return srcAttr; | |
| } | |
| RenderObject* Element::createRenderer(RenderArena* arena, RenderStyle* style) | |
| { | |
| if (document()->documentElement() == this && style->display() == NONE) { | |
| // Ignore display: none on root elements. Force a display of block in that case. | |
| RenderBlock* result = new (arena) RenderBlock(this); | |
| if (result) | |
| result->setAnimatableStyle(style); | |
| return result; | |
| } | |
| return RenderObject::createObject(this, style); | |
| } | |
| void Element::insertedIntoDocument() | |
| { | |
| // need to do superclass processing first so inDocument() is true | |
| // by the time we reach updateId | |
| ContainerNode::insertedIntoDocument(); | |
| if (hasID()) { | |
| if (NamedNodeMap* attrs = namedAttrMap.get()) { | |
| Attribute* idItem = attrs->getAttributeItem(idAttributeName()); | |
| if (idItem && !idItem->isNull()) | |
| updateId(nullAtom, idItem->value()); | |
| } | |
| } | |
| } | |
| void Element::removedFromDocument() | |
| { | |
| if (hasID()) { | |
| if (NamedNodeMap* attrs = namedAttrMap.get()) { | |
| Attribute* idItem = attrs->getAttributeItem(idAttributeName()); | |
| if (idItem && !idItem->isNull()) | |
| updateId(idItem->value(), nullAtom); | |
| } | |
| } | |
| ContainerNode::removedFromDocument(); | |
| } | |
| void Element::attach() | |
| { | |
| suspendPostAttachCallbacks(); | |
| RenderWidget::suspendWidgetHierarchyUpdates(); | |
| createRendererIfNeeded(); | |
| ContainerNode::attach(); | |
| if (hasRareData()) { | |
| ElementRareData* data = rareData(); | |
| if (data->needsFocusAppearanceUpdateSoonAfterAttach()) { | |
| if (isFocusable() && document()->focusedNode() == this) | |
| document()->updateFocusAppearanceSoon(false /* don't restore selection */); | |
| data->setNeedsFocusAppearanceUpdateSoonAfterAttach(false); | |
| } | |
| } | |
| RenderWidget::resumeWidgetHierarchyUpdates(); | |
| resumePostAttachCallbacks(); | |
| } | |
| void Element::detach() | |
| { | |
| RenderWidget::suspendWidgetHierarchyUpdates(); | |
| cancelFocusAppearanceUpdate(); | |
| if (hasRareData()) | |
| rareData()->resetComputedStyle(); | |
| ContainerNode::detach(); | |
| RenderWidget::resumeWidgetHierarchyUpdates(); | |
| } | |
| bool Element::pseudoStyleCacheIsInvalid(const RenderStyle* currentStyle, RenderStyle* newStyle) | |
| { | |
| ASSERT(currentStyle == renderStyle()); | |
| if (!renderer() || !currentStyle) | |
| return false; | |
| RenderStyle::PseudoStyleCache pseudoStyleCache; | |
| currentStyle->getPseudoStyleCache(pseudoStyleCache); | |
| size_t cacheSize = pseudoStyleCache.size(); | |
| for (size_t i = 0; i < cacheSize; ++i) { | |
| RefPtr<RenderStyle> newPseudoStyle; | |
| PseudoId pseudoId = pseudoStyleCache[i]->styleType(); | |
| if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) | |
| newPseudoStyle = renderer()->uncachedFirstLineStyle(newStyle); | |
| else | |
| newPseudoStyle = renderer()->getUncachedPseudoStyle(pseudoId, newStyle, newStyle); | |
| if (*newPseudoStyle != *pseudoStyleCache[i]) { | |
| if (pseudoId < FIRST_INTERNAL_PSEUDOID) | |
| newStyle->setHasPseudoStyle(pseudoId); | |
| newStyle->addCachedPseudoStyle(newPseudoStyle); | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| void Element::recalcStyle(StyleChange change) | |
| { | |
| // Ref currentStyle in case it would otherwise be deleted when setRenderStyle() is called. | |
| RefPtr<RenderStyle> currentStyle(renderStyle()); | |
| bool hasParentStyle = parentNode() ? parentNode()->renderStyle() : false; | |
| bool hasPositionalRules = needsStyleRecalc() && currentStyle && currentStyle->childrenAffectedByPositionalRules(); | |
| bool hasDirectAdjacentRules = currentStyle && currentStyle->childrenAffectedByDirectAdjacentRules(); | |
| #if ENABLE(SVG) | |
| if (!hasParentStyle && isShadowNode() && isSVGElement()) | |
| hasParentStyle = true; | |
| #endif | |
| if ((change > NoChange || needsStyleRecalc())) { | |
| if (hasRareData()) | |
| rareData()->resetComputedStyle(); | |
| } | |
| if (hasParentStyle && (change >= Inherit || needsStyleRecalc())) { | |
| RefPtr<RenderStyle> newStyle = document()->styleSelector()->styleForElement(this); | |
| StyleChange ch = diff(currentStyle.get(), newStyle.get()); | |
| if (ch == Detach || !currentStyle) { | |
| if (attached()) | |
| detach(); | |
| attach(); // FIXME: The style gets computed twice by calling attach. We could do better if we passed the style along. | |
| // attach recalulates the style for all children. No need to do it twice. | |
| setNeedsStyleRecalc(NoStyleChange); | |
| setChildNeedsStyleRecalc(false); | |
| return; | |
| } | |
| if (currentStyle) { | |
| // Preserve "affected by" bits that were propagated to us from descendants in the case where we didn't do a full | |
| // style change (e.g., only inline style changed). | |
| if (currentStyle->affectedByHoverRules()) | |
| newStyle->setAffectedByHoverRules(true); | |
| if (currentStyle->affectedByActiveRules()) | |
| newStyle->setAffectedByActiveRules(true); | |
| if (currentStyle->affectedByDragRules()) | |
| newStyle->setAffectedByDragRules(true); | |
| if (currentStyle->childrenAffectedByForwardPositionalRules()) | |
| newStyle->setChildrenAffectedByForwardPositionalRules(); | |
| if (currentStyle->childrenAffectedByBackwardPositionalRules()) | |
| newStyle->setChildrenAffectedByBackwardPositionalRules(); | |
| if (currentStyle->childrenAffectedByFirstChildRules()) | |
| newStyle->setChildrenAffectedByFirstChildRules(); | |
| if (currentStyle->childrenAffectedByLastChildRules()) | |
| newStyle->setChildrenAffectedByLastChildRules(); | |
| if (currentStyle->childrenAffectedByDirectAdjacentRules()) | |
| newStyle->setChildrenAffectedByDirectAdjacentRules(); | |
| } | |
| if (ch != NoChange || pseudoStyleCacheIsInvalid(currentStyle.get(), newStyle.get()) || change == Force && renderer() && renderer()->requiresForcedStyleRecalcPropagation()) { | |
| setRenderStyle(newStyle); | |
| } else if (needsStyleRecalc() && (styleChangeType() != SyntheticStyleChange) && (document()->usesSiblingRules() || document()->usesDescendantRules())) { | |
| // Although no change occurred, we use the new style so that the cousin style sharing code won't get | |
| // fooled into believing this style is the same. This is only necessary if the document actually uses | |
| // sibling/descendant rules, since otherwise it isn't possible for ancestor styles to affect sharing of | |
| // descendants. | |
| if (renderer()) | |
| renderer()->setStyleInternal(newStyle.get()); | |
| else | |
| setRenderStyle(newStyle); | |
| } else if (styleChangeType() == SyntheticStyleChange) | |
| setRenderStyle(newStyle); | |
| if (change != Force) { | |
| // 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 | |
| // 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). | |
| if (document()->usesRemUnits() && ch != NoChange && currentStyle && newStyle && currentStyle->fontSize() != newStyle->fontSize() && document()->documentElement() == this) | |
| change = Force; | |
| else if ((document()->usesDescendantRules() || hasPositionalRules) && styleChangeType() >= FullStyleChange) | |
| change = Force; | |
| else | |
| change = ch; | |
| } | |
| } | |
| // FIXME: This check is good enough for :hover + foo, but it is not good enough for :hover + foo + bar. | |
| // For now we will just worry about the common case, since it's a lot trickier to get the second case right | |
| // without doing way too much re-resolution. | |
| bool forceCheckOfNextElementSibling = false; | |
| for (Node *n = firstChild(); n; n = n->nextSibling()) { | |
| bool childRulesChanged = n->needsStyleRecalc() && n->styleChangeType() == FullStyleChange; | |
| if (forceCheckOfNextElementSibling && n->isElementNode()) | |
| n->setNeedsStyleRecalc(); | |
| if (change >= Inherit || n->isTextNode() || n->childNeedsStyleRecalc() || n->needsStyleRecalc()) | |
| n->recalcStyle(change); | |
| if (n->isElementNode()) | |
| forceCheckOfNextElementSibling = childRulesChanged && hasDirectAdjacentRules; | |
| } | |
| setNeedsStyleRecalc(NoStyleChange); | |
| setChildNeedsStyleRecalc(false); | |
| } | |
| bool Element::childTypeAllowed(NodeType type) | |
| { | |
| switch (type) { | |
| case ELEMENT_NODE: | |
| case TEXT_NODE: | |
| case COMMENT_NODE: | |
| case PROCESSING_INSTRUCTION_NODE: | |
| case CDATA_SECTION_NODE: | |
| case ENTITY_REFERENCE_NODE: | |
| return true; | |
| break; | |
| default: | |
| return false; | |
| } | |
| } | |
| static void checkForSiblingStyleChanges(Element* e, RenderStyle* style, bool finishedParsingCallback, | |
| Node* beforeChange, Node* afterChange, int childCountDelta) | |
| { | |
| if (!style || (e->needsStyleRecalc() && style->childrenAffectedByPositionalRules())) | |
| return; | |
| // :first-child. In the parser callback case, we don't have to check anything, since we were right the first time. | |
| // In the DOM case, we only need to do something if |afterChange| is not 0. | |
| // |afterChange| is 0 in the parser case, so it works out that we'll skip this block. | |
| if (style->childrenAffectedByFirstChildRules() && afterChange) { | |
| // Find our new first child. | |
| Node* newFirstChild = 0; | |
| for (newFirstChild = e->firstChild(); newFirstChild && !newFirstChild->isElementNode(); newFirstChild = newFirstChild->nextSibling()) {}; | |
| // Find the first element node following |afterChange| | |
| Node* firstElementAfterInsertion = 0; | |
| for (firstElementAfterInsertion = afterChange; | |
| firstElementAfterInsertion && !firstElementAfterInsertion->isElementNode(); | |
| firstElementAfterInsertion = firstElementAfterInsertion->nextSibling()) {}; | |
| // This is the insert/append case. | |
| if (newFirstChild != firstElementAfterInsertion && firstElementAfterInsertion && firstElementAfterInsertion->attached() && | |
| firstElementAfterInsertion->renderStyle() && firstElementAfterInsertion->renderStyle()->firstChildState()) | |
| firstElementAfterInsertion->setNeedsStyleRecalc(); | |
| // We also have to handle node removal. | |
| if (childCountDelta < 0 && newFirstChild == firstElementAfterInsertion && newFirstChild && newFirstChild->renderStyle() && !newFirstChild->renderStyle()->firstChildState()) | |
| newFirstChild->setNeedsStyleRecalc(); | |
| } | |
| // :last-child. In the parser callback case, we don't have to check anything, since we were right the first time. | |
| // In the DOM case, we only need to do something if |afterChange| is not 0. | |
| if (style->childrenAffectedByLastChildRules() && beforeChange) { | |
| // Find our new last child. | |
| Node* newLastChild = 0; | |
| for (newLastChild = e->lastChild(); newLastChild && !newLastChild->isElementNode(); newLastChild = newLastChild->previousSibling()) {}; | |
| // Find the last element node going backwards from |beforeChange| | |
| Node* lastElementBeforeInsertion = 0; | |
| for (lastElementBeforeInsertion = beforeChange; | |
| lastElementBeforeInsertion && !lastElementBeforeInsertion->isElementNode(); | |
| lastElementBeforeInsertion = lastElementBeforeInsertion->previousSibling()) {}; | |
| if (newLastChild != lastElementBeforeInsertion && lastElementBeforeInsertion && lastElementBeforeInsertion->attached() && | |
| lastElementBeforeInsertion->renderStyle() && lastElementBeforeInsertion->renderStyle()->lastChildState()) | |
| lastElementBeforeInsertion->setNeedsStyleRecalc(); | |
| // 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 | |
| // to match now. | |
| if ((childCountDelta < 0 || finishedParsingCallback) && newLastChild == lastElementBeforeInsertion && newLastChild && newLastChild->renderStyle() && !newLastChild->renderStyle()->lastChildState()) | |
| newLastChild->setNeedsStyleRecalc(); | |
| } | |
| // The + selector. We need to invalidate the first element following the insertion point. It is the only possible element | |
| // that could be affected by this DOM change. | |
| if (style->childrenAffectedByDirectAdjacentRules() && afterChange) { | |
| Node* firstElementAfterInsertion = 0; | |
| for (firstElementAfterInsertion = afterChange; | |
| firstElementAfterInsertion && !firstElementAfterInsertion->isElementNode(); | |
| firstElementAfterInsertion = firstElementAfterInsertion->nextSibling()) {}; | |
| if (firstElementAfterInsertion && firstElementAfterInsertion->attached()) | |
| firstElementAfterInsertion->setNeedsStyleRecalc(); | |
| } | |
| // Forward positional selectors include the ~ selector, nth-child, nth-of-type, first-of-type and only-of-type. | |
| // Backward positional selectors include nth-last-child, nth-last-of-type, last-of-type and only-of-type. | |
| // We have to invalidate everything following the insertion point in the forward case, and everything before the insertion point in the | |
| // backward case. | |
| // |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. | |
| // 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 | |
| // here. recalcStyle will then force a walk of the children when it sees that this has happened. | |
| if ((style->childrenAffectedByForwardPositionalRules() && afterChange) || | |
| (style->childrenAffectedByBackwardPositionalRules() && beforeChange)) | |
| e->setNeedsStyleRecalc(); | |
| // :empty selector. | |
| if (style->affectedByEmpty() && (!style->emptyState() || e->hasChildNodes())) | |
| e->setNeedsStyleRecalc(); | |
| } | |
| void Element::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) | |
| { | |
| ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta); | |
| if (!changedByParser) | |
| checkForSiblingStyleChanges(this, renderStyle(), false, beforeChange, afterChange, childCountDelta); | |
| } | |
| void Element::finishParsingChildren() | |
| { | |
| ContainerNode::finishParsingChildren(); | |
| m_parsingChildrenFinished = true; | |
| checkForSiblingStyleChanges(this, renderStyle(), true, lastChild(), 0, 0); | |
| } | |
| void Element::dispatchAttrRemovalEvent(Attribute*) | |
| { | |
| ASSERT(!eventDispatchForbidden()); | |
| #if 0 | |
| if (!document()->hasListenerType(Document::DOMATTRMODIFIED_LISTENER)) | |
| return; | |
| ExceptionCode ec = 0; | |
| dispatchEvent(new MutationEvent(DOMAttrModifiedEvent, true, false, attr, attr->value(), | |
| attr->value(), document()->attrName(attr->id()), MutationEvent::REMOVAL), ec); | |
| #endif | |
| } | |
| void Element::dispatchAttrAdditionEvent(Attribute*) | |
| { | |
| ASSERT(!eventDispatchForbidden()); | |
| #if 0 | |
| if (!document()->hasListenerType(Document::DOMATTRMODIFIED_LISTENER)) | |
| return; | |
| ExceptionCode ec = 0; | |
| dispatchEvent(new MutationEvent(DOMAttrModifiedEvent, true, false, attr, attr->value(), | |
| attr->value(), document()->attrName(attr->id()), MutationEvent::ADDITION), ec); | |
| #endif | |
| } | |
| String Element::openTagStartToString() const | |
| { | |
| String result = "<" + nodeName(); | |
| NamedNodeMap* attrMap = attributes(true); | |
| if (attrMap) { | |
| unsigned numAttrs = attrMap->length(); | |
| for (unsigned i = 0; i < numAttrs; i++) { | |
| result += " "; | |
| Attribute *attribute = attrMap->attributeItem(i); | |
| result += attribute->name().toString(); | |
| if (!attribute->value().isNull()) { | |
| result += "=\""; | |
| // FIXME: substitute entities for any instances of " or ' | |
| result += attribute->value(); | |
| result += "\""; | |
| } | |
| } | |
| } | |
| return result; | |
| } | |
| #ifndef NDEBUG | |
| void Element::formatForDebugger(char* buffer, unsigned length) const | |
| { | |
| String result; | |
| String s; | |
| s = nodeName(); | |
| if (s.length() > 0) { | |
| result += s; | |
| } | |
| s = getAttribute(idAttributeName()); | |
| if (s.length() > 0) { | |
| if (result.length() > 0) | |
| result += "; "; | |
| result += "id="; | |
| result += s; | |
| } | |
| s = getAttribute(classAttr); | |
| if (s.length() > 0) { | |
| if (result.length() > 0) | |
| result += "; "; | |
| result += "class="; | |
| result += s; | |
| } | |
| strncpy(buffer, result.utf8().data(), length - 1); | |
| } | |
| #endif | |
| PassRefPtr<Attr> Element::setAttributeNode(Attr* attr, ExceptionCode& ec) | |
| { | |
| if (!attr) { | |
| ec = TYPE_MISMATCH_ERR; | |
| return 0; | |
| } | |
| return static_pointer_cast<Attr>(attributes(false)->setNamedItem(attr, ec)); | |
| } | |
| PassRefPtr<Attr> Element::setAttributeNodeNS(Attr* attr, ExceptionCode& ec) | |
| { | |
| if (!attr) { | |
| ec = TYPE_MISMATCH_ERR; | |
| return 0; | |
| } | |
| return static_pointer_cast<Attr>(attributes(false)->setNamedItem(attr, ec)); | |
| } | |
| PassRefPtr<Attr> Element::removeAttributeNode(Attr* attr, ExceptionCode& ec) | |
| { | |
| if (!attr) { | |
| ec = TYPE_MISMATCH_ERR; | |
| return 0; | |
| } | |
| if (attr->ownerElement() != this) { | |
| ec = NOT_FOUND_ERR; | |
| return 0; | |
| } | |
| if (document() != attr->document()) { | |
| ec = WRONG_DOCUMENT_ERR; | |
| return 0; | |
| } | |
| NamedNodeMap* attrs = attributes(true); | |
| if (!attrs) | |
| return 0; | |
| return static_pointer_cast<Attr>(attrs->removeNamedItem(attr->qualifiedName(), ec)); | |
| } | |
| void Element::setAttributeNS(const AtomicString& namespaceURI, const AtomicString& qualifiedName, const AtomicString& value, ExceptionCode& ec, FragmentScriptingPermission scriptingPermission) | |
| { | |
| String prefix, localName; | |
| if (!Document::parseQualifiedName(qualifiedName, prefix, localName, ec)) | |
| return; | |
| QualifiedName qName(prefix, localName, namespaceURI); | |
| if (scriptingPermission == FragmentScriptingNotAllowed && (isEventHandlerAttribute(qName) || isAttributeToRemove(qName, value))) | |
| return; | |
| setAttribute(qName, value, ec); | |
| } | |
| void Element::removeAttribute(const String& name, ExceptionCode& ec) | |
| { | |
| String localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; | |
| if (namedAttrMap) { | |
| namedAttrMap->removeNamedItem(localName, ec); | |
| if (ec == NOT_FOUND_ERR) | |
| ec = 0; | |
| } | |
| #if ENABLE(INSPECTOR) | |
| if (Page* page = document()->page()) { | |
| if (InspectorController* inspectorController = page->inspectorController()) | |
| inspectorController->didModifyDOMAttr(this); | |
| } | |
| #endif | |
| } | |
| void Element::removeAttributeNS(const String& namespaceURI, const String& localName, ExceptionCode& ec) | |
| { | |
| removeAttribute(QualifiedName(nullAtom, localName, namespaceURI), ec); | |
| } | |
| PassRefPtr<Attr> Element::getAttributeNode(const String& name) | |
| { | |
| NamedNodeMap* attrs = attributes(true); | |
| if (!attrs) | |
| return 0; | |
| String localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; | |
| return static_pointer_cast<Attr>(attrs->getNamedItem(localName)); | |
| } | |
| PassRefPtr<Attr> Element::getAttributeNodeNS(const String& namespaceURI, const String& localName) | |
| { | |
| NamedNodeMap* attrs = attributes(true); | |
| if (!attrs) | |
| return 0; | |
| return static_pointer_cast<Attr>(attrs->getNamedItem(QualifiedName(nullAtom, localName, namespaceURI))); | |
| } | |
| bool Element::hasAttribute(const String& name) const | |
| { | |
| NamedNodeMap* attrs = attributes(true); | |
| if (!attrs) | |
| return false; | |
| // This call to String::lower() seems to be required but | |
| // there may be a way to remove it. | |
| String localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; | |
| return attrs->getAttributeItem(localName, false); | |
| } | |
| bool Element::hasAttributeNS(const String& namespaceURI, const String& localName) const | |
| { | |
| NamedNodeMap* attrs = attributes(true); | |
| if (!attrs) | |
| return false; | |
| return attrs->getAttributeItem(QualifiedName(nullAtom, localName, namespaceURI)); | |
| } | |
| CSSStyleDeclaration *Element::style() | |
| { | |
| return 0; | |
| } | |
| void Element::focus(bool restorePreviousSelection) | |
| { | |
| Document* doc = document(); | |
| if (doc->focusedNode() == this) | |
| return; | |
| if (!supportsFocus()) | |
| return; | |
| // If the stylesheets have already been loaded we can reliably check isFocusable. | |
| // If not, we continue and set the focused node on the focus controller below so | |
| // that it can be updated soon after attach. | |
| if (doc->haveStylesheetsLoaded()) { | |
| doc->updateLayoutIgnorePendingStylesheets(); | |
| if (!isFocusable()) | |
| return; | |
| } | |
| RefPtr<Node> protect; | |
| if (Page* page = doc->page()) { | |
| // Focus and change event handlers can cause us to lose our last ref. | |
| protect = this; | |
| page->focusController()->setFocusedNode(this, doc->frame()); | |
| } | |
| // Setting the focused node above might have invalidated the layout due to scripts. | |
| doc->updateLayoutIgnorePendingStylesheets(); | |
| if (!isFocusable()) { | |
| ensureRareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(true); | |
| return; | |
| } | |
| cancelFocusAppearanceUpdate(); | |
| updateFocusAppearance(restorePreviousSelection); | |
| } | |
| void Element::updateFocusAppearance(bool /*restorePreviousSelection*/) | |
| { | |
| if (this == rootEditableElement()) { | |
| Frame* frame = document()->frame(); | |
| if (!frame) | |
| return; | |
| // FIXME: We should restore the previous selection if there is one. | |
| VisibleSelection newSelection = hasTagName(htmlTag) || hasTagName(bodyTag) ? VisibleSelection(Position(this, 0), DOWNSTREAM) : VisibleSelection::selectionFromContentsOfNode(this); | |
| if (frame->shouldChangeSelection(newSelection)) { | |
| frame->selection()->setSelection(newSelection); | |
| frame->revealSelection(); | |
| } | |
| } | |
| // FIXME: I'm not sure all devices will want this off, but this is | |
| // currently turned off for Android. | |
| #if !ENABLE(DIRECTIONAL_PAD_NAVIGATION) | |
| else if (renderer() && !renderer()->isWidget()) | |
| renderer()->enclosingLayer()->scrollRectToVisible(getRect()); | |
| #endif | |
| } | |
| void Element::blur() | |
| { | |
| cancelFocusAppearanceUpdate(); | |
| Document* doc = document(); | |
| if (doc->focusedNode() == this) { | |
| if (doc->frame()) | |
| doc->frame()->page()->focusController()->setFocusedNode(0, doc->frame()); | |
| else | |
| doc->setFocusedNode(0); | |
| } | |
| } | |
| String Element::innerText() const | |
| { | |
| // We need to update layout, since plainText uses line boxes in the render tree. | |
| document()->updateLayoutIgnorePendingStylesheets(); | |
| if (!renderer()) | |
| return textContent(true); | |
| return plainText(rangeOfContents(const_cast<Element*>(this)).get()); | |
| } | |
| String Element::outerText() const | |
| { | |
| // Getting outerText is the same as getting innerText, only | |
| // setting is different. You would think this should get the plain | |
| // text for the outer range, but this is wrong, <br> for instance | |
| // would return different values for inner and outer text by such | |
| // a rule, but it doesn't in WinIE, and we want to match that. | |
| return innerText(); | |
| } | |
| String Element::title() const | |
| { | |
| return String(); | |
| } | |
| IntSize Element::minimumSizeForResizing() const | |
| { | |
| return hasRareData() ? rareData()->m_minimumSizeForResizing : defaultMinimumSizeForResizing(); | |
| } | |
| void Element::setMinimumSizeForResizing(const IntSize& size) | |
| { | |
| if (size == defaultMinimumSizeForResizing() && !hasRareData()) | |
| return; | |
| ensureRareData()->m_minimumSizeForResizing = size; | |
| } | |
| RenderStyle* Element::computedStyle() | |
| { | |
| if (RenderStyle* usedStyle = renderStyle()) | |
| return usedStyle; | |
| if (!attached()) | |
| // FIXME: Try to do better than this. Ensure that styleForElement() works for elements that are not in the | |
| // document tree and figure out when to destroy the computed style for such elements. | |
| return 0; | |
| ElementRareData* data = ensureRareData(); | |
| if (!data->m_computedStyle) | |
| data->m_computedStyle = document()->styleForElementIgnoringPendingStylesheets(this); | |
| return data->m_computedStyle.get(); | |
| } | |
| void Element::cancelFocusAppearanceUpdate() | |
| { | |
| if (hasRareData()) | |
| rareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(false); | |
| if (document()->focusedNode() == this) | |
| document()->cancelFocusAppearanceUpdate(); | |
| } | |
| void Element::normalizeAttributes() | |
| { | |
| // Normalize attributes. | |
| NamedNodeMap* attrs = attributes(true); | |
| if (!attrs) | |
| return; | |
| if (attrs->isEmpty()) | |
| return; | |
| Vector<RefPtr<Attribute> > attributeVector; | |
| attrs->copyAttributesToVector(attributeVector); | |
| size_t numAttrs = attributeVector.size(); | |
| for (size_t i = 0; i < numAttrs; ++i) { | |
| if (Attr* attr = attributeVector[i]->attr()) | |
| attr->normalize(); | |
| } | |
| } | |
| // ElementTraversal API | |
| Element* Element::firstElementChild() const | |
| { | |
| Node* n = firstChild(); | |
| while (n && !n->isElementNode()) | |
| n = n->nextSibling(); | |
| return static_cast<Element*>(n); | |
| } | |
| Element* Element::lastElementChild() const | |
| { | |
| Node* n = lastChild(); | |
| while (n && !n->isElementNode()) | |
| n = n->previousSibling(); | |
| return static_cast<Element*>(n); | |
| } | |
| Element* Element::previousElementSibling() const | |
| { | |
| Node* n = previousSibling(); | |
| while (n && !n->isElementNode()) | |
| n = n->previousSibling(); | |
| return static_cast<Element*>(n); | |
| } | |
| Element* Element::nextElementSibling() const | |
| { | |
| Node* n = nextSibling(); | |
| while (n && !n->isElementNode()) | |
| n = n->nextSibling(); | |
| return static_cast<Element*>(n); | |
| } | |
| unsigned Element::childElementCount() const | |
| { | |
| unsigned count = 0; | |
| Node* n = firstChild(); | |
| while (n) { | |
| count += n->isElementNode(); | |
| n = n->nextSibling(); | |
| } | |
| return count; | |
| } | |
| bool Element::webkitMatchesSelector(const String& selector, ExceptionCode& ec) | |
| { | |
| if (selector.isEmpty()) { | |
| ec = SYNTAX_ERR; | |
| return false; | |
| } | |
| bool strictParsing = !document()->inCompatMode(); | |
| CSSParser p(strictParsing); | |
| CSSSelectorList selectorList; | |
| p.parseSelector(selector, document(), selectorList); | |
| if (!selectorList.first()) { | |
| ec = SYNTAX_ERR; | |
| return false; | |
| } | |
| // Throw a NAMESPACE_ERR if the selector includes any namespace prefixes. | |
| if (selectorList.selectorsNeedNamespaceResolution()) { | |
| ec = NAMESPACE_ERR; | |
| return false; | |
| } | |
| CSSStyleSelector::SelectorChecker selectorChecker(document(), strictParsing); | |
| for (CSSSelector* selector = selectorList.first(); selector; selector = CSSSelectorList::next(selector)) { | |
| if (selectorChecker.checkSelector(selector, this)) | |
| return true; | |
| } | |
| return false; | |
| } | |
| KURL Element::getURLAttribute(const QualifiedName& name) const | |
| { | |
| #if !ASSERT_DISABLED | |
| if (namedAttrMap) { | |
| if (Attribute* attribute = namedAttrMap->getAttributeItem(name)) | |
| ASSERT(isURLAttribute(attribute)); | |
| } | |
| #endif | |
| return document()->completeURL(deprecatedParseURL(getAttribute(name))); | |
| } | |
| const QualifiedName& Element::rareIDAttributeName() const | |
| { | |
| return rareData()->m_idAttributeName; | |
| } | |
| #if ENABLE(SVG) | |
| bool Element::childShouldCreateRenderer(Node* child) const | |
| { | |
| // Only create renderers for SVG elements whose parents are SVG elements, or for proper <svg xmlns="svgNS"> subdocuments. | |
| if (child->isSVGElement()) | |
| return child->hasTagName(SVGNames::svgTag) || isSVGElement(); | |
| return Node::childShouldCreateRenderer(child); | |
| } | |
| #endif | |
| } // namespace WebCore |