| /* |
| * 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 "ElementRareData.h" |
| #include "ExceptionCode.h" |
| #include "FocusController.h" |
| #include "Frame.h" |
| #include "FrameView.h" |
| #include "HTMLElement.h" |
| #include "HTMLNames.h" |
| #include "NamedNodeMap.h" |
| #include "NodeList.h" |
| #include "NodeRenderStyle.h" |
| #include "Page.h" |
| #include "RenderView.h" |
| #include "TextIterator.h" |
| #include "XMLNames.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<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 attributes. |
| if (namedAttrMap) |
| clone->attributes()->setAttributes(*attributes(true)); // Call attributes(true) to force attribute synchronization to occur (for svg and style) before cloning happens. |
| |
| clone->copyNonAttributeProperties(this); |
| |
| 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::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); |
| } |
| |
| NamedNodeMap* Element::attributes(bool readonly) const |
| { |
| if (!m_isStyleAttributeValid) |
| updateStyleAttribute(); |
| |
| #if ENABLE(SVG) |
| if (!m_areSVGAttributesValid) |
| updateAnimatedSVGAttribute(String()); |
| #endif |
| |
| if (!readonly && !namedAttrMap) |
| createAttributeMap(); |
| return namedAttrMap.get(); |
| } |
| |
| 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.localName()); |
| #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 |
| { |
| String localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; |
| if (localName == styleAttr.localName() && !m_isStyleAttributeValid) |
| updateStyleAttribute(); |
| |
| #if ENABLE(SVG) |
| if (!m_areSVGAttributesValid) |
| updateAnimatedSVGAttribute(name); |
| #endif |
| |
| if (namedAttrMap) |
| if (Attribute* a = namedAttrMap->getAttributeItem(name, shouldIgnoreAttributeCase(this))) |
| return a->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; |
| } |
| |
| const AtomicString& localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; |
| |
| // allocate attributemap if necessary |
| Attribute* old = attributes(false)->getAttributeItem(localName, false); |
| |
| document()->incDOMTreeVersion(); |
| |
| if (localName == idAttr.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); |
| } |
| } |
| |
| void Element::setAttribute(const QualifiedName& name, const AtomicString& value, ExceptionCode&) |
| { |
| document()->incDOMTreeVersion(); |
| |
| // allocate attributemap if necessary |
| Attribute* old = attributes(false)->getAttributeItem(name); |
| |
| if (name == idAttr) |
| 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); |
| } |
| } |
| |
| 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) |
| { |
| AXObjectCache* axObjectCache = document()->axObjectCache(); |
| 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 |
| axObjectCache->handleActiveDescendantChanged(renderer()); |
| } else if (attrName == roleAttr) { |
| // the role attribute can change at any time, and the AccessibilityObject must pick up these changes |
| axObjectCache->handleAriaRoleChanged(renderer()); |
| } else if (attrName == aria_valuenowAttr) { |
| // If the valuenow attribute changes, AX clients need to be notified. |
| axObjectCache->postNotification(renderer(), AXObjectCache::AXValueChanged, true); |
| } |
| } |
| |
| void Element::recalcStyleIfNeededAfterAttributeChanged(Attribute* attr) |
| { |
| if (document()->attached() && document()->styleSelector()->hasSelectorForAttribute(attr->name().localName())) |
| setNeedsStyleRecalc(); |
| } |
| |
| void Element::setAttributeMap(PassRefPtr<NamedNodeMap> list) |
| { |
| document()->incDOMTreeVersion(); |
| |
| // If setting the whole map changes the id attribute, we need to call updateId. |
| |
| Attribute* oldId = namedAttrMap ? namedAttrMap->getAttributeItem(idAttr) : 0; |
| Attribute* newId = list ? list->getAttributeItem(idAttr) : 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; |
| 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(String()); |
| #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); |
| } |
| |
| KURL Element::baseURI() const |
| { |
| KURL base(KURL(), getAttribute(baseAttr)); |
| 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, base.string()); |
| } |
| |
| 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(idAttr); |
| if (idItem && !idItem->isNull()) |
| updateId(nullAtom, idItem->value()); |
| } |
| } |
| } |
| |
| void Element::removedFromDocument() |
| { |
| if (hasID()) { |
| if (NamedNodeMap* attrs = namedAttrMap.get()) { |
| Attribute* idItem = attrs->getAttributeItem(idAttr); |
| if (idItem && !idItem->isNull()) |
| updateId(idItem->value(), nullAtom); |
| } |
| } |
| |
| ContainerNode::removedFromDocument(); |
| } |
| |
| void Element::attach() |
| { |
| suspendPostAttachCallbacks(); |
| |
| createRendererIfNeeded(); |
| ContainerNode::attach(); |
| if (hasRareData()) { |
| ElementRareData* data = rareData(); |
| if (data->needsFocusAppearanceUpdateSoonAfterAttach()) { |
| if (isFocusable() && document()->focusedNode() == this) |
| document()->updateFocusAppearanceSoon(); |
| data->setNeedsFocusAppearanceUpdateSoonAfterAttach(false); |
| } |
| } |
| |
| resumePostAttachCallbacks(); |
| } |
| |
| void Element::detach() |
| { |
| cancelFocusAppearanceUpdate(); |
| if (hasRareData()) |
| rareData()->resetComputedStyle(); |
| ContainerNode::detach(); |
| } |
| |
| 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())) { |
| 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; |
| } |
| |
| void Element::updateId(const AtomicString& oldId, const AtomicString& newId) |
| { |
| if (!inDocument()) |
| return; |
| |
| if (oldId == newId) |
| return; |
| |
| Document* doc = document(); |
| if (!oldId.isEmpty()) |
| doc->removeElementById(oldId, this); |
| if (!newId.isEmpty()) |
| doc->addElementById(newId, this); |
| } |
| |
| #ifndef NDEBUG |
| void Element::formatForDebugger(char* buffer, unsigned length) const |
| { |
| String result; |
| String s; |
| |
| s = nodeName(); |
| if (s.length() > 0) { |
| result += s; |
| } |
| |
| s = getAttribute(idAttr); |
| 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) |
| { |
| String prefix, localName; |
| if (!Document::parseQualifiedName(qualifiedName, prefix, localName, ec)) |
| return; |
| |
| QualifiedName qName(prefix, localName, namespaceURI); |
| 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; |
| } |
| } |
| |
| 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; |
| } |
| |
| if (Page* page = doc->page()) |
| 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 Andriod. |
| #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()->styleSelector()->styleForElement(this, parent() ? parent()->computedStyle() : 0); |
| 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; |
| unsigned numAttrs = attrs->length(); |
| for (unsigned i = 0; i < numAttrs; i++) { |
| if (Attr* attr = attrs->attributeItem(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 |
| { |
| #ifndef NDEBUG |
| if (namedAttrMap) { |
| if (Attribute* attribute = namedAttrMap->getAttributeItem(name)) |
| ASSERT(isURLAttribute(attribute)); |
| } |
| #endif |
| return document()->completeURL(deprecatedParseURL(getAttribute(name))); |
| } |
| |
| } // namespace WebCore |
