| /* |
| * Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved. |
| * Copyright (C) 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2010 François Sausset (sausset@gmail.com). All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(MATHML) |
| |
| #include "MathMLElement.h" |
| |
| #include "ElementIterator.h" |
| #include "HTMLElement.h" |
| #include "HTMLMapElement.h" |
| #include "HTMLNames.h" |
| #include "MathMLNames.h" |
| #include "MathMLSelectElement.h" |
| #include "RenderTableCell.h" |
| #include "SVGElement.h" |
| #include "SVGNames.h" |
| |
| namespace WebCore { |
| |
| using namespace MathMLNames; |
| |
| MathMLElement::MathMLElement(const QualifiedName& tagName, Document& document) |
| : StyledElement(tagName, document, CreateMathMLElement) |
| { |
| } |
| |
| PassRefPtr<MathMLElement> MathMLElement::create(const QualifiedName& tagName, Document& document) |
| { |
| return adoptRef(new MathMLElement(tagName, document)); |
| } |
| |
| bool MathMLElement::isPresentationMathML() const |
| { |
| return hasTagName(MathMLNames::mtrTag) |
| || hasTagName(MathMLNames::mtdTag) |
| || hasTagName(MathMLNames::maligngroupTag) |
| || hasTagName(MathMLNames::malignmarkTag) |
| || hasTagName(MathMLNames::mencloseTag) |
| || hasTagName(MathMLNames::mglyphTag) |
| || hasTagName(MathMLNames::mlabeledtrTag) |
| || hasTagName(MathMLNames::mlongdivTag) |
| || hasTagName(MathMLNames::mpaddedTag) |
| || hasTagName(MathMLNames::msTag) |
| || hasTagName(MathMLNames::mscarriesTag) |
| || hasTagName(MathMLNames::mscarryTag) |
| || hasTagName(MathMLNames::msgroupTag) |
| || hasTagName(MathMLNames::mslineTag) |
| || hasTagName(MathMLNames::msrowTag) |
| || hasTagName(MathMLNames::mstackTag); |
| } |
| |
| bool MathMLElement::isPhrasingContent(const Node& node) const |
| { |
| // Phrasing content is described in the HTML 5 specification: |
| // http://www.w3.org/TR/html5/dom.html#phrasing-content. |
| |
| if (!node.isElementNode()) |
| return node.isTextNode(); |
| |
| if (is<MathMLElement>(node)) { |
| auto& mathmlElement = downcast<MathMLElement>(node); |
| return is<MathMLMathElement>(mathmlElement); |
| } |
| |
| if (is<SVGElement>(node)) { |
| auto& svgElement = downcast<SVGElement>(node); |
| return is<SVGSVGElement>(svgElement); |
| } |
| |
| if (is<HTMLElement>(node)) { |
| // FIXME: add the <data> and <time> tags when they are implemented. |
| auto& htmlElement = downcast<HTMLElement>(node); |
| return htmlElement.hasTagName(HTMLNames::aTag) |
| || htmlElement.hasTagName(HTMLNames::abbrTag) |
| || (htmlElement.hasTagName(HTMLNames::areaTag) && ancestorsOfType<HTMLMapElement>(htmlElement).first()) |
| || htmlElement.hasTagName(HTMLNames::audioTag) |
| || htmlElement.hasTagName(HTMLNames::bTag) |
| || htmlElement.hasTagName(HTMLNames::bdiTag) |
| || htmlElement.hasTagName(HTMLNames::bdoTag) |
| || htmlElement.hasTagName(HTMLNames::brTag) |
| || htmlElement.hasTagName(HTMLNames::buttonTag) |
| || htmlElement.hasTagName(HTMLNames::canvasTag) |
| || htmlElement.hasTagName(HTMLNames::citeTag) |
| || htmlElement.hasTagName(HTMLNames::codeTag) |
| || htmlElement.hasTagName(HTMLNames::datalistTag) |
| || htmlElement.hasTagName(HTMLNames::delTag) |
| || htmlElement.hasTagName(HTMLNames::dfnTag) |
| || htmlElement.hasTagName(HTMLNames::emTag) |
| || htmlElement.hasTagName(HTMLNames::embedTag) |
| || htmlElement.hasTagName(HTMLNames::iTag) |
| || htmlElement.hasTagName(HTMLNames::iframeTag) |
| || htmlElement.hasTagName(HTMLNames::imgTag) |
| || htmlElement.hasTagName(HTMLNames::inputTag) |
| || htmlElement.hasTagName(HTMLNames::insTag) |
| || htmlElement.hasTagName(HTMLNames::kbdTag) |
| || htmlElement.hasTagName(HTMLNames::keygenTag) |
| || htmlElement.hasTagName(HTMLNames::labelTag) |
| || htmlElement.hasTagName(HTMLNames::mapTag) |
| || htmlElement.hasTagName(HTMLNames::markTag) |
| || htmlElement.hasTagName(HTMLNames::meterTag) |
| || htmlElement.hasTagName(HTMLNames::noscriptTag) |
| || htmlElement.hasTagName(HTMLNames::objectTag) |
| || htmlElement.hasTagName(HTMLNames::outputTag) |
| || htmlElement.hasTagName(HTMLNames::progressTag) |
| || htmlElement.hasTagName(HTMLNames::qTag) |
| || htmlElement.hasTagName(HTMLNames::rubyTag) |
| || htmlElement.hasTagName(HTMLNames::sTag) |
| || htmlElement.hasTagName(HTMLNames::sampTag) |
| || htmlElement.hasTagName(HTMLNames::scriptTag) |
| || htmlElement.hasTagName(HTMLNames::selectTag) |
| || htmlElement.hasTagName(HTMLNames::smallTag) |
| || htmlElement.hasTagName(HTMLNames::spanTag) |
| || htmlElement.hasTagName(HTMLNames::strongTag) |
| || htmlElement.hasTagName(HTMLNames::subTag) |
| || htmlElement.hasTagName(HTMLNames::supTag) |
| || htmlElement.hasTagName(HTMLNames::templateTag) |
| || htmlElement.hasTagName(HTMLNames::textareaTag) |
| || htmlElement.hasTagName(HTMLNames::uTag) |
| || htmlElement.hasTagName(HTMLNames::varTag) |
| || htmlElement.hasTagName(HTMLNames::videoTag) |
| || htmlElement.hasTagName(HTMLNames::wbrTag); |
| } |
| |
| return false; |
| } |
| |
| bool MathMLElement::isFlowContent(const Node& node) const |
| { |
| // Flow content is described in the HTML 5 specification: |
| // http://www.w3.org/TR/html5/dom.html#flow-content |
| |
| if (isPhrasingContent(node)) |
| return true; |
| |
| if (!is<HTMLElement>(node)) |
| return false; |
| |
| auto& htmlElement = downcast<HTMLElement>(node); |
| // FIXME add the <dialog> tag when it is implemented. |
| return htmlElement.hasTagName(HTMLNames::addressTag) |
| || htmlElement.hasTagName(HTMLNames::articleTag) |
| || htmlElement.hasTagName(HTMLNames::asideTag) |
| || htmlElement.hasTagName(HTMLNames::blockquoteTag) |
| || htmlElement.hasTagName(HTMLNames::detailsTag) |
| || htmlElement.hasTagName(HTMLNames::divTag) |
| || htmlElement.hasTagName(HTMLNames::dlTag) |
| || htmlElement.hasTagName(HTMLNames::fieldsetTag) |
| || htmlElement.hasTagName(HTMLNames::figureTag) |
| || htmlElement.hasTagName(HTMLNames::footerTag) |
| || htmlElement.hasTagName(HTMLNames::formTag) |
| || htmlElement.hasTagName(HTMLNames::h1Tag) |
| || htmlElement.hasTagName(HTMLNames::h2Tag) |
| || htmlElement.hasTagName(HTMLNames::h3Tag) |
| || htmlElement.hasTagName(HTMLNames::h4Tag) |
| || htmlElement.hasTagName(HTMLNames::h5Tag) |
| || htmlElement.hasTagName(HTMLNames::h6Tag) |
| || htmlElement.hasTagName(HTMLNames::headerTag) |
| || htmlElement.hasTagName(HTMLNames::hrTag) |
| || htmlElement.hasTagName(HTMLNames::mainTag) |
| || htmlElement.hasTagName(HTMLNames::navTag) |
| || htmlElement.hasTagName(HTMLNames::olTag) |
| || htmlElement.hasTagName(HTMLNames::pTag) |
| || htmlElement.hasTagName(HTMLNames::preTag) |
| || htmlElement.hasTagName(HTMLNames::sectionTag) |
| || (htmlElement.hasTagName(HTMLNames::styleTag) && htmlElement.hasAttribute("scoped")) |
| || htmlElement.hasTagName(HTMLNames::tableTag) |
| || htmlElement.hasTagName(HTMLNames::ulTag); |
| } |
| |
| int MathMLElement::colSpan() const |
| { |
| if (!hasTagName(mtdTag)) |
| return 1; |
| const AtomicString& colSpanValue = fastGetAttribute(columnspanAttr); |
| return std::max(1, colSpanValue.toInt()); |
| } |
| |
| int MathMLElement::rowSpan() const |
| { |
| if (!hasTagName(mtdTag)) |
| return 1; |
| const AtomicString& rowSpanValue = fastGetAttribute(rowspanAttr); |
| return std::max(1, rowSpanValue.toInt()); |
| } |
| |
| void MathMLElement::parseAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| if (name == rowspanAttr) { |
| if (is<RenderTableCell>(renderer()) && hasTagName(mtdTag)) |
| downcast<RenderTableCell>(*renderer()).colSpanOrRowSpanChanged(); |
| } else if (name == columnspanAttr) { |
| if (is<RenderTableCell>(renderer()) && hasTagName(mtdTag)) |
| downcast<RenderTableCell>(renderer())->colSpanOrRowSpanChanged(); |
| } else |
| StyledElement::parseAttribute(name, value); |
| } |
| |
| bool MathMLElement::isPresentationAttribute(const QualifiedName& name) const |
| { |
| if (name == backgroundAttr || name == colorAttr || name == dirAttr || name == fontfamilyAttr || name == fontsizeAttr || name == fontstyleAttr || name == fontweightAttr || name == mathbackgroundAttr || name == mathcolorAttr || name == mathsizeAttr) |
| return true; |
| return StyledElement::isPresentationAttribute(name); |
| } |
| |
| void MathMLElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStyleProperties& style) |
| { |
| if (name == mathbackgroundAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyBackgroundColor, value); |
| else if (name == mathsizeAttr) { |
| // The following three values of mathsize are handled in WebCore/css/mathml.css |
| if (value != "normal" && value != "small" && value != "big") |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFontSize, value); |
| } else if (name == mathcolorAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyColor, value); |
| // FIXME: deprecated attributes that should loose in a conflict with a non deprecated attribute |
| else if (name == fontsizeAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFontSize, value); |
| else if (name == backgroundAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyBackgroundColor, value); |
| else if (name == colorAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyColor, value); |
| else if (name == fontstyleAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFontStyle, value); |
| else if (name == fontweightAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFontWeight, value); |
| else if (name == fontfamilyAttr) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyFontFamily, value); |
| else if (name == dirAttr) { |
| if (hasTagName(mathTag) || hasTagName(mrowTag) || hasTagName(mstyleTag) || isMathMLToken()) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyDirection, value); |
| } else { |
| ASSERT(!isPresentationAttribute(name)); |
| StyledElement::collectStyleForPresentationAttribute(name, value |
| , style); |
| } |
| } |
| |
| bool MathMLElement::childShouldCreateRenderer(const Node& child) const |
| { |
| if (hasTagName(annotation_xmlTag)) { |
| const AtomicString& value = fastGetAttribute(MathMLNames::encodingAttr); |
| |
| // See annotation-xml.model.mathml, annotation-xml.model.svg and annotation-xml.model.xhtml in the HTML5 RelaxNG schema. |
| |
| if (is<MathMLElement>(child) && (MathMLSelectElement::isMathMLEncoding(value) || MathMLSelectElement::isHTMLEncoding(value))) { |
| auto& mathmlElement = downcast<MathMLElement>(child); |
| return is<MathMLMathElement>(mathmlElement); |
| } |
| |
| if (is<SVGElement>(child) && (MathMLSelectElement::isSVGEncoding(value) || MathMLSelectElement::isHTMLEncoding(value))) { |
| auto& svgElement = downcast<SVGElement>(child); |
| return is<SVGSVGElement>(svgElement); |
| } |
| |
| if (is<HTMLElement>(child) && MathMLSelectElement::isHTMLEncoding(value)) { |
| auto& htmlElement = downcast<HTMLElement>(child); |
| return is<HTMLHtmlElement>(htmlElement) || (isFlowContent(htmlElement) && StyledElement::childShouldCreateRenderer(child)); |
| } |
| |
| return false; |
| } |
| |
| // In general, only MathML children are allowed. Text nodes are only visible in token MathML elements. |
| return is<MathMLElement>(child); |
| } |
| |
| void MathMLElement::attributeChanged(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue, AttributeModificationReason reason) |
| { |
| if (isSemanticAnnotation() && (name == MathMLNames::srcAttr || name == MathMLNames::encodingAttr)) { |
| Element* parent = parentElement(); |
| if (is<MathMLElement>(parent) && parent->hasTagName(semanticsTag)) |
| downcast<MathMLElement>(*parent).updateSelectedChild(); |
| } |
| StyledElement::attributeChanged(name, oldValue, newValue, reason); |
| } |
| |
| } |
| |
| #endif // ENABLE(MATHML) |
