| /* |
| * 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, 2010 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 "ClassList.h" |
| #include "ClientRect.h" |
| #include "ClientRectList.h" |
| #include "DOMTokenList.h" |
| #include "DatasetDOMStringMap.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 "HTMLParserIdioms.h" |
| #include "InspectorInstrumentation.h" |
| #include "NodeList.h" |
| #include "NodeRenderStyle.h" |
| #include "Page.h" |
| #include "RenderLayer.h" |
| #include "RenderView.h" |
| #include "RenderWidget.h" |
| #include "Settings.h" |
| #include "ShadowRoot.h" |
| #include "TextIterator.h" |
| #include "WebKitAnimationList.h" |
| #include "XMLNames.h" |
| #include "htmlediting.h" |
| #include <wtf/text/CString.h> |
| |
| #if ENABLE(SVG) |
| #include "SVGElement.h" |
| #include "SVGNames.h" |
| #endif |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| using namespace XMLNames; |
| |
| class StyleSelectorParentPusher { |
| public: |
| StyleSelectorParentPusher(Element* parent) |
| : m_parent(parent) |
| , m_pushedStyleSelector(0) |
| { |
| } |
| void push() |
| { |
| if (m_pushedStyleSelector) |
| return; |
| m_pushedStyleSelector = m_parent->document()->styleSelector(); |
| m_pushedStyleSelector->pushParent(m_parent); |
| } |
| ~StyleSelectorParentPusher() |
| { |
| |
| if (!m_pushedStyleSelector) |
| return; |
| ASSERT(m_pushedStyleSelector == m_parent->document()->styleSelector()); |
| m_pushedStyleSelector->popParent(m_parent); |
| } |
| |
| private: |
| Element* m_parent; |
| CSSStyleSelector* m_pushedStyleSelector; |
| }; |
| |
| PassRefPtr<Element> Element::create(const QualifiedName& tagName, Document* document) |
| { |
| return adoptRef(new Element(tagName, document, CreateElement)); |
| } |
| |
| Element::~Element() |
| { |
| removeShadowRoot(); |
| if (m_attributeMap) |
| m_attributeMap->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; |
| } |
| |
| DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, blur); |
| DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, error); |
| DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, focus); |
| DEFINE_VIRTUAL_ATTRIBUTE_EVENT_LISTENER(Element, load); |
| |
| PassRefPtr<DocumentFragment> Element::deprecatedCreateContextualFragment(const String& markup, FragmentScriptingPermission scriptingPermission) |
| { |
| RefPtr<DocumentFragment> fragment = document()->createDocumentFragment(); |
| |
| if (document()->isHTMLDocument()) |
| fragment->parseHTML(markup, this, scriptingPermission); |
| else { |
| if (!fragment->parseXML(markup, 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)) { |
| HTMLElement* element = toHTMLElement(node.get()); |
| Node* firstChild = element->firstChild(); |
| if (firstChild) |
| nextNode = firstChild; |
| RefPtr<Node> nextChild; |
| for (RefPtr<Node> child = firstChild; child; child = nextChild) { |
| nextChild = child->nextSibling(); |
| element->removeChild(child.get(), ignoredExceptionCode); |
| ASSERT(!ignoredExceptionCode); |
| fragment->insertBefore(child, element, ignoredExceptionCode); |
| ASSERT(!ignoredExceptionCode); |
| } |
| fragment->removeChild(element, 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 = cloneElementWithoutAttributesAndChildren(); |
| // 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()); |
| |
| // Call attributes(true) to force attribute synchronization to occur for SVG and style attributes. |
| if (NamedNodeMap* attributeMap = attributes(true)) |
| clone->attributes()->setAttributes(*attributeMap); |
| |
| clone->copyNonAttributeProperties(this); |
| |
| return clone.release(); |
| } |
| |
| PassRefPtr<Element> Element::cloneElementWithoutAttributesAndChildren() const |
| { |
| return document()->createElement(tagQName(), false); |
| } |
| |
| void Element::removeAttribute(const QualifiedName& name, ExceptionCode& ec) |
| { |
| if (m_attributeMap) { |
| ec = 0; |
| m_attributeMap->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, emptyAtom); |
| else { |
| ExceptionCode ex; |
| removeAttribute(name, ex); |
| } |
| } |
| |
| Node::NodeType Element::nodeType() const |
| { |
| return ELEMENT_NODE; |
| } |
| |
| bool Element::hasAttribute(const QualifiedName& name) const |
| { |
| return hasAttributeNS(name.namespaceURI(), name.localName()); |
| } |
| |
| const AtomicString& Element::getAttribute(const QualifiedName& name) const |
| { |
| if (UNLIKELY(name == styleAttr) && !isStyleAttributeValid()) |
| updateStyleAttribute(); |
| |
| #if ENABLE(SVG) |
| if (UNLIKELY(!areSVGAttributesValid())) |
| updateAnimatedSVGAttribute(name); |
| #endif |
| |
| return fastGetAttribute(name); |
| } |
| |
| 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; |
| if (renderer->style()->effectiveZoom() != 1) { |
| // 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 inQuirksMode = document()->inQuirksMode(); |
| if ((!inQuirksMode && document()->documentElement() == this) || |
| (inQuirksMode && 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 inQuirksMode = document()->inQuirksMode(); |
| |
| if ((!inQuirksMode && document()->documentElement() == this) || |
| (inQuirksMode && 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; |
| } |
| |
| IntRect Element::boundsInWindowSpace() const |
| { |
| document()->updateLayoutIgnorePendingStylesheets(); |
| |
| FrameView* view = document()->view(); |
| if (!view) |
| return IntRect(); |
| |
| Vector<FloatQuad> quads; |
| #if ENABLE(SVG) |
| if (isSVGElement() && renderer()) { |
| // Get the bounding rectangle from the SVG model. |
| const SVGElement* svgElement = static_cast<const SVGElement*>(this); |
| FloatRect localRect; |
| if (svgElement->boundingBox(localRect)) |
| quads.append(renderer()->localToAbsoluteQuad(localRect)); |
| } else |
| #endif |
| { |
| // Get the bounding rectangle from the box model. |
| if (renderBoxModelObject()) |
| renderBoxModelObject()->absoluteQuads(quads); |
| } |
| |
| if (quads.isEmpty()) |
| return IntRect(); |
| |
| IntRect result = quads[0].enclosingBoundingBox(); |
| for (size_t i = 1; i < quads.size(); ++i) |
| result.unite(quads[i].enclosingBoundingBox()); |
| |
| result = view->contentsToWindow(result); |
| return result; |
| } |
| |
| 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); |
| |
| float pageScale = 1; |
| if (Page* page = document()->page()) { |
| if (Frame* frame = page->mainFrame()) |
| pageScale = frame->pageScaleFactor(); |
| } |
| |
| 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); |
| if (pageScale != 1) |
| adjustFloatQuadForPageScale(quads[i], pageScale); |
| } |
| } |
| |
| return ClientRectList::create(quads); |
| } |
| |
| PassRefPtr<ClientRect> Element::getBoundingClientRect() const |
| { |
| document()->updateLayoutIgnorePendingStylesheets(); |
| |
| Vector<FloatQuad> quads; |
| #if ENABLE(SVG) |
| if (isSVGElement() && renderer()) { |
| // Get the bounding rectangle from the SVG model. |
| const SVGElement* svgElement = static_cast<const SVGElement*>(this); |
| FloatRect localRect; |
| if (svgElement->boundingBox(localRect)) |
| quads.append(renderer()->localToAbsoluteQuad(localRect)); |
| } else |
| #endif |
| { |
| // Get the bounding rectangle from the box model. |
| if (renderBoxModelObject()) |
| renderBoxModelObject()->absoluteQuads(quads); |
| } |
| |
| if (quads.isEmpty()) |
| return ClientRect::create(); |
| |
| FloatRect result = quads[0].boundingBox(); |
| for (size_t i = 1; i < quads.size(); ++i) |
| result.unite(quads[i].boundingBox()); |
| |
| if (FrameView* view = document()->view()) { |
| IntRect visibleContentRect = view->visibleContentRect(); |
| result.move(-visibleContentRect.x(), -visibleContentRect.y()); |
| } |
| |
| adjustFloatRectForAbsoluteZoom(result, renderer()); |
| if (Page* page = document()->page()) { |
| if (Frame* frame = page->mainFrame()) |
| adjustFloatRectForPageScale(result, frame->pageScaleFactor()); |
| } |
| |
| return ClientRect::create(result); |
| } |
| |
| IntRect Element::screenRect() const |
| { |
| if (!renderer()) |
| return IntRect(); |
| return renderer()->view()->frameView()->contentsToScreen(renderer()->absoluteBoundingBoxRect()); |
| } |
| |
| 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 (!isStyleAttributeValid() && equalPossiblyIgnoringCase(name, styleAttr.localName(), ignoreCase)) |
| updateStyleAttribute(); |
| |
| #if ENABLE(SVG) |
| if (!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 (m_attributeMap) { |
| if (Attribute* attribute = m_attributeMap->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 ENABLE(INSPECTOR) |
| if (!isSynchronizingStyleAttribute()) |
| InspectorInstrumentation::willModifyDOMAttr(document(), this); |
| #endif |
| |
| const AtomicString& localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; |
| QualifiedName attributeName(nullAtom, localName, nullAtom); |
| |
| // Allocate attribute map if necessary. |
| Attribute* old = attributes(false)->getAttributeItem(localName, false); |
| |
| document()->incDOMTreeVersion(); |
| |
| if (isIdAttributeName(old ? old->name() : attributeName)) |
| updateId(old ? old->value() : nullAtom, value); |
| |
| if (old && value.isNull()) |
| m_attributeMap->removeAttribute(old->name()); |
| else if (!old && !value.isNull()) |
| m_attributeMap->addAttribute(createAttribute(attributeName, value)); |
| else if (old && !value.isNull()) { |
| if (Attr* attrNode = old->attr()) |
| attrNode->setValue(value); |
| else |
| old->setValue(value); |
| attributeChanged(old); |
| } |
| |
| #if ENABLE(INSPECTOR) |
| if (!isSynchronizingStyleAttribute()) |
| InspectorInstrumentation::didModifyDOMAttr(document(), this); |
| #endif |
| } |
| |
| void Element::setAttribute(const QualifiedName& name, const AtomicString& value, ExceptionCode&) |
| { |
| #if ENABLE(INSPECTOR) |
| if (!isSynchronizingStyleAttribute()) |
| InspectorInstrumentation::willModifyDOMAttr(document(), this); |
| #endif |
| |
| document()->incDOMTreeVersion(); |
| |
| // Allocate attribute map if necessary. |
| Attribute* old = attributes(false)->getAttributeItem(name); |
| |
| if (isIdAttributeName(name)) |
| updateId(old ? old->value() : nullAtom, value); |
| |
| if (old && value.isNull()) |
| m_attributeMap->removeAttribute(name); |
| else if (!old && !value.isNull()) |
| m_attributeMap->addAttribute(createAttribute(name, value)); |
| else if (old) { |
| if (Attr* attrNode = old->attr()) |
| attrNode->setValue(value); |
| else |
| old->setValue(value); |
| attributeChanged(old); |
| } |
| |
| #if ENABLE(INSPECTOR) |
| if (!isSynchronizingStyleAttribute()) |
| InspectorInstrumentation::didModifyDOMAttr(document(), this); |
| #endif |
| } |
| |
| PassRefPtr<Attribute> Element::createAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| return Attribute::create(name, value); |
| } |
| |
| void Element::attributeChanged(Attribute* attr, bool) |
| { |
| if (isIdAttributeName(attr->name())) |
| idAttributeChanged(attr); |
| 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()); |
| } else if (attrName == aria_selectedAttr) |
| document()->axObjectCache()->selectedChildrenChanged(renderer()); |
| else if (attrName == aria_expandedAttr) |
| document()->axObjectCache()->handleAriaExpandedChange(renderer()); |
| else if (attrName == aria_hiddenAttr) |
| document()->axObjectCache()->childrenChanged(renderer()); |
| else if (attrName == aria_invalidAttr) |
| document()->axObjectCache()->postNotification(renderer(), AXObjectCache::AXInvalidStatusChanged, true); |
| } |
| |
| void Element::recalcStyleIfNeededAfterAttributeChanged(Attribute* attr) |
| { |
| if (document()->attached() && document()->styleSelector()->hasSelectorForAttribute(attr->name().localName())) |
| setNeedsStyleRecalc(); |
| } |
| |
| void Element::idAttributeChanged(Attribute* attr) |
| { |
| setHasID(!attr->isNull()); |
| if (attributeMap()) { |
| if (attr->isNull()) |
| attributeMap()->setIdForStyleResolution(nullAtom); |
| else if (document()->inQuirksMode()) |
| attributeMap()->setIdForStyleResolution(attr->value().lower()); |
| else |
| attributeMap()->setIdForStyleResolution(attr->value()); |
| } |
| 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(stripLeadingAndTrailingHTMLSpaces(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 = document()->idAttributeName(); |
| Attribute* oldId = m_attributeMap ? m_attributeMap->getAttributeItem(idName) : 0; |
| Attribute* newId = list ? list->getAttributeItem(idName) : 0; |
| |
| if (oldId || newId) |
| updateId(oldId ? oldId->value() : nullAtom, newId ? newId->value() : nullAtom); |
| |
| if (m_attributeMap) |
| m_attributeMap->m_element = 0; |
| |
| m_attributeMap = list; |
| |
| if (m_attributeMap) { |
| m_attributeMap->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 < m_attributeMap->length()) { |
| const QualifiedName& attributeName = m_attributeMap->m_attributes[i]->name(); |
| if (isEventHandlerAttribute(attributeName)) { |
| m_attributeMap->m_attributes.remove(i); |
| continue; |
| } |
| |
| if (isAttributeToRemove(attributeName, m_attributeMap->m_attributes[i]->value())) |
| m_attributeMap->m_attributes[i]->setValue(nullAtom); |
| i++; |
| } |
| } |
| // Store the set of attributes that changed on the stack in case |
| // attributeChanged mutates m_attributeMap. |
| Vector<RefPtr<Attribute> > attributes; |
| m_attributeMap->copyAttributesToVector(attributes); |
| for (Vector<RefPtr<Attribute> >::iterator iter = attributes.begin(); iter != attributes.end(); ++iter) |
| attributeChanged(iter->get()); |
| // FIXME: What about attributes that were in the old map that are not in the new map? |
| } |
| } |
| |
| bool Element::hasAttributes() const |
| { |
| if (!isStyleAttributeValid()) |
| updateStyleAttribute(); |
| |
| #if ENABLE(SVG) |
| if (!areSVGAttributesValid()) |
| updateAnimatedSVGAttribute(anyQName()); |
| #endif |
| |
| return m_attributeMap && m_attributeMap->length(); |
| } |
| |
| 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; |
| |
| ContainerNode* parent = parentNode(); |
| if (!parent) |
| return base; |
| |
| const KURL& parentBase = parent->baseURI(); |
| if (parentBase.isNull()) |
| return base; |
| |
| return KURL(parentBase, baseAttribute); |
| } |
| |
| void Element::createAttributeMap() const |
| { |
| m_attributeMap = 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); |
| } |
| |
| bool Element::wasChangedSinceLastFormControlChangeEvent() const |
| { |
| return false; |
| } |
| |
| void Element::setChangedSinceLastFormControlChangeEvent(bool) |
| { |
| } |
| |
| void Element::insertedIntoDocument() |
| { |
| // need to do superclass processing first so inDocument() is true |
| // by the time we reach updateId |
| ContainerNode::insertedIntoDocument(); |
| if (Node* shadow = shadowRoot()) |
| shadow->insertedIntoDocument(); |
| |
| if (hasID()) { |
| if (m_attributeMap) { |
| Attribute* idItem = m_attributeMap->getAttributeItem(document()->idAttributeName()); |
| if (idItem && !idItem->isNull()) |
| updateId(nullAtom, idItem->value()); |
| } |
| } |
| } |
| |
| void Element::removedFromDocument() |
| { |
| if (hasID()) { |
| if (m_attributeMap) { |
| Attribute* idItem = m_attributeMap->getAttributeItem(document()->idAttributeName()); |
| if (idItem && !idItem->isNull()) |
| updateId(idItem->value(), nullAtom); |
| } |
| } |
| |
| ContainerNode::removedFromDocument(); |
| if (Node* shadow = shadowRoot()) |
| shadow->removedFromDocument(); |
| } |
| |
| void Element::insertedIntoTree(bool deep) |
| { |
| ContainerNode::insertedIntoTree(deep); |
| if (!deep) |
| return; |
| if (Node* shadow = shadowRoot()) |
| shadow->insertedIntoTree(true); |
| } |
| |
| void Element::removedFromTree(bool deep) |
| { |
| ContainerNode::removedFromTree(deep); |
| if (!deep) |
| return; |
| if (Node* shadow = shadowRoot()) |
| shadow->removedFromTree(true); |
| } |
| |
| void Element::attach() |
| { |
| suspendPostAttachCallbacks(); |
| RenderWidget::suspendWidgetHierarchyUpdates(); |
| |
| createRendererIfNeeded(); |
| |
| StyleSelectorParentPusher parentPusher(this); |
| |
| if (Node* shadow = shadowRoot()) { |
| parentPusher.push(); |
| shadow->attach(); |
| } |
| |
| if (firstChild()) |
| parentPusher.push(); |
| 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(); |
| if (Node* shadow = shadowRoot()) |
| shadow->detach(); |
| |
| RenderWidget::resumeWidgetHierarchyUpdates(); |
| } |
| |
| bool Element::pseudoStyleCacheIsInvalid(const RenderStyle* currentStyle, RenderStyle* newStyle) |
| { |
| ASSERT(currentStyle == renderStyle()); |
| |
| if (!renderer() || !currentStyle) |
| return false; |
| |
| const PseudoStyleCache* pseudoStyleCache = currentStyle->cachedPseudoStyles(); |
| if (!pseudoStyleCache) |
| return false; |
| |
| size_t cacheSize = pseudoStyleCache->size(); |
| for (size_t i = 0; i < cacheSize; ++i) { |
| RefPtr<RenderStyle> newPseudoStyle; |
| PseudoId pseudoId = pseudoStyleCache->at(i)->styleType(); |
| if (pseudoId == VISITED_LINK) { |
| newPseudoStyle = newStyle->getCachedPseudoStyle(VISITED_LINK); // This pseudo-style was aggressively computed already when we first called styleForElement on the new style. |
| if (!newPseudoStyle || *newPseudoStyle != *pseudoStyleCache->at(i)) |
| return true; |
| } else if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) |
| newPseudoStyle = renderer()->uncachedFirstLineStyle(newStyle); |
| else |
| newPseudoStyle = renderer()->getUncachedPseudoStyle(pseudoId, newStyle, newStyle); |
| if (!newPseudoStyle) |
| return true; |
| if (*newPseudoStyle != *pseudoStyleCache->at(i)) { |
| if (pseudoId < FIRST_INTERNAL_PSEUDOID) |
| newStyle->setHasPseudoStyle(pseudoId); |
| newStyle->addCachedPseudoStyle(newPseudoStyle); |
| if (pseudoId == FIRST_LINE || pseudoId == FIRST_LINE_INHERITED) { |
| // FIXME: We should do an actual diff to determine whether a repaint vs. layout |
| // is needed, but for now just assume a layout will be required. The diff code |
| // in RenderObject::setStyle would need to be factored out so that it could be reused. |
| renderer()->setNeedsLayoutAndPrefWidthsRecalc(); |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| #ifdef ANDROID_STYLE_VERSION |
| static bool displayDiff(const RenderStyle* s1, const RenderStyle* s2) |
| { |
| if (!s1 || !s2) |
| return false; |
| return s1->display() != s2->display() |
| || s1->left() != s2->left() || s1->top() != s2->top() |
| || s1->right() != s2->right() || s1->bottom() != s2->bottom(); |
| } |
| #endif |
| |
| void Element::recalcStyle(StyleChange change) |
| { |
| // Ref currentStyle in case it would otherwise be deleted when setRenderStyle() is called. |
| RefPtr<RenderStyle> currentStyle(renderStyle()); |
| bool hasParentStyle = parentNodeForRenderingAndStyle() ? parentNodeForRenderingAndStyle()->renderStyle() : false; |
| bool hasDirectAdjacentRules = currentStyle && currentStyle->childrenAffectedByDirectAdjacentRules(); |
| |
| if ((change > NoChange || needsStyleRecalc())) { |
| #ifdef ANDROID_STYLE_VERSION |
| RefPtr<RenderStyle> newStyle = document()->styleForElementIgnoringPendingStylesheets(this); |
| if (displayDiff(currentStyle.get(), newStyle.get())) |
| document()->incStyleVersion(); |
| #endif |
| 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. |
| clearNeedsStyleRecalc(); |
| clearChildNeedsStyleRecalc(); |
| 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) { |
| // 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. |
| 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 (styleChangeType() >= FullStyleChange) |
| change = Force; |
| else |
| change = ch; |
| } |
| } |
| StyleSelectorParentPusher parentPusher(this); |
| // 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()) { |
| parentPusher.push(); |
| n->recalcStyle(change); |
| } |
| if (n->isElementNode()) |
| forceCheckOfNextElementSibling = childRulesChanged && hasDirectAdjacentRules; |
| } |
| // FIXME: This does not care about sibling combinators. Will be necessary in XBL2 world. |
| if (Node* shadow = shadowRoot()) { |
| if (change >= Inherit || shadow->childNeedsStyleRecalc() || shadow->needsStyleRecalc()) { |
| parentPusher.push(); |
| shadow->recalcStyle(change); |
| } |
| } |
| |
| clearNeedsStyleRecalc(); |
| clearChildNeedsStyleRecalc(); |
| } |
| |
| ContainerNode* Element::shadowRoot() const |
| { |
| return hasRareData() ? rareData()->m_shadowRoot : 0; |
| } |
| |
| ContainerNode* Element::ensureShadowRoot() |
| { |
| if (ContainerNode* existingRoot = shadowRoot()) |
| return existingRoot; |
| |
| RefPtr<ShadowRoot> newRoot = ShadowRoot::create(document()); |
| ensureRareData()->m_shadowRoot = newRoot.get(); |
| newRoot->setShadowHost(this); |
| if (inDocument()) |
| newRoot->insertedIntoDocument(); |
| if (attached()) |
| newRoot->lazyAttach(); |
| return newRoot.get(); |
| } |
| |
| void Element::removeShadowRoot() |
| { |
| if (!hasRareData()) |
| return; |
| |
| ElementRareData* data = rareData(); |
| if (RefPtr<Node> oldRoot = data->m_shadowRoot) { |
| data->m_shadowRoot = 0; |
| document()->removeFocusedNodeOfSubtree(oldRoot.get()); |
| oldRoot->setShadowHost(0); |
| if (oldRoot->inDocument()) |
| oldRoot->removedFromDocument(); |
| else |
| oldRoot->removedFromTree(true); |
| } |
| } |
| |
| bool Element::childTypeAllowed(NodeType type) const |
| { |
| 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; |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| static void checkForEmptyStyleChange(Element* element, RenderStyle* style) |
| { |
| if (!style) |
| return; |
| |
| if (style->affectedByEmpty() && (!style->emptyState() || element->hasChildNodes())) |
| element->setNeedsStyleRecalc(); |
| } |
| |
| 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. |
| checkForEmptyStyleChange(e, style); |
| } |
| |
| void Element::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta) |
| { |
| ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta); |
| if (changedByParser) |
| checkForEmptyStyleChange(this, renderStyle()); |
| else |
| checkForSiblingStyleChanges(this, renderStyle(), false, beforeChange, afterChange, childCountDelta); |
| } |
| |
| void Element::beginParsingChildren() |
| { |
| clearIsParsingChildrenFinished(); |
| CSSStyleSelector* styleSelector = document()->styleSelectorIfExists(); |
| if (styleSelector && attached()) |
| styleSelector->pushParent(this); |
| } |
| |
| void Element::finishParsingChildren() |
| { |
| ContainerNode::finishParsingChildren(); |
| setIsParsingChildrenFinished(); |
| checkForSiblingStyleChanges(this, renderStyle(), true, lastChild(), 0, 0); |
| if (CSSStyleSelector* styleSelector = document()->styleSelectorIfExists()) |
| styleSelector->popParent(this); |
| } |
| |
| void Element::dispatchAttrRemovalEvent(Attribute*) |
| { |
| ASSERT(!eventDispatchForbidden()); |
| |
| #if 0 |
| if (!document()->hasListenerType(Document::DOMATTRMODIFIED_LISTENER)) |
| return; |
| ExceptionCode ec = 0; |
| dispatchScopedEvent(MutationEvent::create(DOMAttrModifiedEvent, true, 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; |
| dispatchScopedEvent(MutationEvent::create(DOMAttrModifiedEvent, true, 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 = getIdAttribute(); |
| 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; |
| } |
| |
| ASSERT(document() == attr->document()); |
| |
| 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; |
| |
| if (namespaceURI.isNull() && !prefix.isNull()) { |
| ec = NAMESPACE_ERR; |
| 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) |
| { |
| InspectorInstrumentation::willModifyDOMAttr(document(), this); |
| |
| String localName = shouldIgnoreAttributeCase(this) ? name.lower() : name; |
| |
| if (m_attributeMap) { |
| m_attributeMap->removeNamedItem(localName, ec); |
| if (ec == NOT_FOUND_ERR) |
| ec = 0; |
| } |
| |
| InspectorInstrumentation::didModifyDOMAttr(document(), this); |
| } |
| |
| 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) |
| { |
| if (!inDocument()) |
| return; |
| |
| Document* doc = document(); |
| if (doc->focusedNode() == this) |
| 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 (!supportsFocus()) |
| return; |
| |
| RefPtr<Node> protect; |
| if (Page* page = doc->page()) { |
| // Focus and change event handlers can cause us to lose our last ref. |
| // If a focus event handler changes the focus to a different node it |
| // does not make sense to continue and update appearence. |
| protect = this; |
| if (!page->focusController()->setFocusedNode(this, doc->frame())) |
| return; |
| } |
| |
| // 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; |
| |
| // When focusing an editable element in an iframe, don't reset the selection if it already contains a selection. |
| if (this == frame->selection()->rootEditableElement()) |
| return; |
| |
| // FIXME: We should restore the previous selection if there is one. |
| VisibleSelection newSelection = VisibleSelection(firstPositionInOrBeforeNode(this), DOWNSTREAM); |
| |
| if (frame->selection()->shouldChangeSelection(newSelection)) { |
| frame->selection()->setSelection(newSelection); |
| frame->selection()->revealSelection(); |
| } |
| } else if (renderer() && !renderer()->isWidget()) |
| renderer()->enclosingLayer()->scrollRectToVisible(getRect()); |
| } |
| |
| 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(PseudoId pseudoElementSpecifier) |
| { |
| // FIXME: Find and use the renderer from the pseudo element instead of the actual element so that the 'length' |
| // properties, which are only known by the renderer because it did the layout, will be correct and so that the |
| // values returned for the ":selection" pseudo-element will be correct. |
| if (RenderStyle* usedStyle = renderStyle()) |
| return pseudoElementSpecifier ? usedStyle->getCachedPseudoStyle(pseudoElementSpecifier) : 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 pseudoElementSpecifier ? data->m_computedStyle->getCachedPseudoStyle(pseudoElementSpecifier) : data->m_computedStyle.get(); |
| } |
| |
| AtomicString Element::computeInheritedLanguage() const |
| { |
| const Node* n = this; |
| AtomicString value; |
| // The language property is inherited, so we iterate over the parents to find the first language. |
| while (n && value.isNull()) { |
| if (n->isElementNode()) { |
| // Spec: xml:lang takes precedence -- http://www.w3.org/TR/xhtml1/#C_7 |
| value = static_cast<const Element*>(n)->fastGetAttribute(XMLNames::langAttr); |
| if (value.isNull()) |
| value = static_cast<const Element*>(n)->fastGetAttribute(HTMLNames::langAttr); |
| } else if (n->isDocumentNode()) { |
| // checking the MIME content-language |
| value = static_cast<const Document*>(n)->contentLanguage(); |
| } |
| |
| n = n->parentNode(); |
| } |
| |
| return value; |
| } |
| |
| 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 |
| { |
| return WebCore::firstElementChild(this); |
| } |
| |
| 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()->inQuirksMode(); |
| 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; |
| } |
| |
| DOMTokenList* Element::classList() |
| { |
| ElementRareData* data = ensureRareData(); |
| if (!data->m_classList) |
| data->m_classList = ClassList::create(this); |
| return data->m_classList.get(); |
| } |
| |
| DOMTokenList* Element::optionalClassList() const |
| { |
| if (!hasRareData()) |
| return 0; |
| return rareData()->m_classList.get(); |
| } |
| |
| DOMStringMap* Element::dataset() |
| { |
| ElementRareData* data = ensureRareData(); |
| if (!data->m_datasetDOMStringMap) |
| data->m_datasetDOMStringMap = DatasetDOMStringMap::create(this); |
| return data->m_datasetDOMStringMap.get(); |
| } |
| |
| DOMStringMap* Element::optionalDataset() const |
| { |
| if (!hasRareData()) |
| return 0; |
| return rareData()->m_datasetDOMStringMap.get(); |
| } |
| |
| KURL Element::getURLAttribute(const QualifiedName& name) const |
| { |
| #if !ASSERT_DISABLED |
| if (m_attributeMap) { |
| if (Attribute* attribute = m_attributeMap->getAttributeItem(name)) |
| ASSERT(isURLAttribute(attribute)); |
| } |
| #endif |
| return document()->completeURL(stripLeadingAndTrailingHTMLSpaces(getAttribute(name))); |
| } |
| |
| KURL Element::getNonEmptyURLAttribute(const QualifiedName& name) const |
| { |
| #if !ASSERT_DISABLED |
| if (m_attributeMap) { |
| if (Attribute* attribute = m_attributeMap->getAttributeItem(name)) |
| ASSERT(isURLAttribute(attribute)); |
| } |
| #endif |
| String value = stripLeadingAndTrailingHTMLSpaces(getAttribute(name)); |
| if (value.isEmpty()) |
| return KURL(); |
| return document()->completeURL(value); |
| } |
| |
| int Element::getIntegralAttribute(const QualifiedName& attributeName) const |
| { |
| return getAttribute(attributeName).string().toInt(); |
| } |
| |
| void Element::setIntegralAttribute(const QualifiedName& attributeName, int value) |
| { |
| // FIXME: Need an AtomicString version of String::number. |
| ExceptionCode ec; |
| setAttribute(attributeName, String::number(value), ec); |
| } |
| |
| unsigned Element::getUnsignedIntegralAttribute(const QualifiedName& attributeName) const |
| { |
| return getAttribute(attributeName).string().toUInt(); |
| } |
| |
| void Element::setUnsignedIntegralAttribute(const QualifiedName& attributeName, unsigned value) |
| { |
| // FIXME: Need an AtomicString version of String::number. |
| ExceptionCode ec; |
| setAttribute(attributeName, String::number(value), ec); |
| } |
| |
| #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 |
| |
| #if ENABLE(FULLSCREEN_API) |
| void Element::webkitRequestFullScreen(unsigned short flags) |
| { |
| document()->webkitRequestFullScreenForElement(this, flags); |
| } |
| #endif |
| |
| SpellcheckAttributeState Element::spellcheckAttributeState() const |
| { |
| if (!hasAttribute(HTMLNames::spellcheckAttr)) |
| return SpellcheckAttributeDefault; |
| |
| const AtomicString& value = getAttribute(HTMLNames::spellcheckAttr); |
| if (equalIgnoringCase(value, "true") || equalIgnoringCase(value, "")) |
| return SpellcheckAttributeTrue; |
| if (equalIgnoringCase(value, "false")) |
| return SpellcheckAttributeFalse; |
| |
| return SpellcheckAttributeDefault; |
| } |
| |
| bool Element::isSpellCheckingEnabled() const |
| { |
| const Element* element = this; |
| while (element) { |
| switch (element->spellcheckAttributeState()) { |
| case SpellcheckAttributeTrue: |
| return true; |
| case SpellcheckAttributeFalse: |
| return false; |
| case SpellcheckAttributeDefault: |
| break; |
| } |
| |
| ContainerNode* parent = const_cast<Element*>(element)->parentOrHostNode(); |
| element = (parent && parent->isElementNode()) ? toElement(parent) : 0; |
| } |
| |
| return true; |
| } |
| |
| PassRefPtr<WebKitAnimationList> Element::webkitGetAnimations() const |
| { |
| if (!renderer()) |
| return 0; |
| |
| AnimationController* animController = renderer()->animation(); |
| |
| if (!animController) |
| return 0; |
| |
| return animController->animationsForRenderer(renderer()); |
| } |
| |
| } // namespace WebCore |
