C++ AtomicString::contains方法代码示例

static inline QualifiedName constructQualifiedName(const SVGElement* svgElement, const AtomicString& attributeName)
{
    ASSERT(svgElement);
    if (attributeName.isEmpty())
        return anyQName();
    if (!attributeName.contains(':'))
        return QualifiedName(nullAtom, attributeName, nullAtom);

    AtomicString prefix;
    AtomicString localName;
    if (!Document::parseQualifiedName(attributeName, prefix, localName, IGNORE_EXCEPTION))
        return anyQName();

    const AtomicString& namespaceURI = svgElement->lookupNamespaceURI(prefix);
    if (namespaceURI.isEmpty())
        return anyQName();

    QualifiedName resolvedAttrName(nullAtom, localName, namespaceURI);
    // "Animation elements treat attributeName='xlink:href' as being an alias
    //  for targetting the 'href' attribute."
    // https://svgwg.org/svg2-draft/types.html#__svg__SVGURIReference__href
    if (resolvedAttrName == XLinkNames::hrefAttr)
        return SVGNames::hrefAttr;
    return resolvedAttrName;
}

void ShadowTreeStyleSheetCollection::collectStyleSheets(StyleEngine* collections, Vector<RefPtr<StyleSheet> >& styleSheets, Vector<RefPtr<CSSStyleSheet> >& activeSheets)
{
    if (document()->settings() && !document()->settings()->authorAndUserStylesEnabled())
        return;

    DocumentOrderedList::iterator begin = m_styleSheetCandidateNodes.begin();
    DocumentOrderedList::iterator end = m_styleSheetCandidateNodes.end();
    for (DocumentOrderedList::iterator it = begin; it != end; ++it) {
        Node* node = *it;
        StyleSheet* sheet = 0;
        CSSStyleSheet* activeSheet = 0;

        if (!node->isHTMLElement() || !node->hasTagName(styleTag))
            continue;

        Element* element = toElement(node);
        AtomicString title = element->getAttribute(titleAttr);
        bool enabledViaScript = false;

        sheet = toHTMLStyleElement(node)->sheet();
        if (sheet && !sheet->disabled() && sheet->isCSSStyleSheet())
            activeSheet = static_cast<CSSStyleSheet*>(sheet);

        // FIXME: clarify how PREFERRED or ALTERNATE works in shadow trees.
        // Should we set preferred/selected stylesheets name in shadow trees and
        // use the name in document?
        AtomicString rel = element->getAttribute(relAttr);
        if (!enabledViaScript && sheet && !title.isEmpty()) {
            if (collections->preferredStylesheetSetName().isEmpty()) {
                if (element->hasLocalName(styleTag) || !rel.contains("alternate")) {
                    collections->setPreferredStylesheetSetName(title);
                    collections->setSelectedStylesheetSetName(title);
                }
            }
            if (title != collections->preferredStylesheetSetName())
                activeSheet = 0;
        }

        if (rel.contains("alternate") && title.isEmpty())
            activeSheet = 0;

        if (sheet)
            styleSheets.append(sheet);
        if (activeSheet)
            activeSheets.append(activeSheet);
    }
}

static inline QualifiedName constructQualifiedName(const SVGElement* svgElement, const AtomicString& attributeName)
{
    ASSERT(svgElement);
    if (attributeName.isEmpty())
        return anyQName();
    if (!attributeName.contains(':'))
        return QualifiedName(nullAtom, attributeName, nullAtom);

    AtomicString prefix;
    AtomicString localName;
    if (!Document::parseQualifiedName(attributeName, prefix, localName, IGNORE_EXCEPTION))
        return anyQName();

    const AtomicString& namespaceURI = svgElement->lookupNamespaceURI(prefix);
    if (namespaceURI.isEmpty())
        return anyQName();

    return QualifiedName(nullAtom, localName, namespaceURI);
}

void DocumentStyleSheetCollection::collectActiveStyleSheets(Vector<RefPtr<StyleSheet> >& sheets)
{
    if (m_document->settings() && !m_document->settings()->authorAndUserStylesEnabled())
        return;

    StyleSheetCandidateListHashSet::iterator begin = m_styleSheetCandidateNodes.begin();
    StyleSheetCandidateListHashSet::iterator end = m_styleSheetCandidateNodes.end();
    for (StyleSheetCandidateListHashSet::iterator it = begin; it != end; ++it) {
        Node* n = *it;
        StyleSheet* sheet = 0;
        if (n->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) {
            // Processing instruction (XML documents only).
            // We don't support linking to embedded CSS stylesheets, see <https://bugs.webkit.org/show_bug.cgi?id=49281> for discussion.
            ProcessingInstruction* pi = static_cast<ProcessingInstruction*>(n);
            sheet = pi->sheet();
#if ENABLE(XSLT)
            // Don't apply XSL transforms to already transformed documents -- <rdar://problem/4132806>
            if (pi->isXSL() && !m_document->transformSourceDocument()) {
                // Don't apply XSL transforms until loading is finished.
                if (!m_document->parsing())
                    m_document->applyXSLTransform(pi);
                return;
            }
#endif
        } else if ((n->isHTMLElement() && (n->hasTagName(linkTag) || n->hasTagName(styleTag)))
#if ENABLE(SVG)
                   ||  (n->isSVGElement() && n->hasTagName(SVGNames::styleTag))
#endif
                   ) {
            Element* e = toElement(n);
            AtomicString title = e->getAttribute(titleAttr);
            bool enabledViaScript = false;
            if (e->hasTagName(linkTag)) {
                // <LINK> element
                HTMLLinkElement* linkElement = static_cast<HTMLLinkElement*>(n);
                if (linkElement->isDisabled())
                    continue;
                enabledViaScript = linkElement->isEnabledViaScript();
                if (linkElement->styleSheetIsLoading()) {
                    // it is loading but we should still decide which style sheet set to use
                    if (!enabledViaScript && !title.isEmpty() && m_preferredStylesheetSetName.isEmpty()) {
                        const AtomicString& rel = e->getAttribute(relAttr);
                        if (!rel.contains("alternate")) {
                            m_preferredStylesheetSetName = title;
                            m_selectedStylesheetSetName = title;
                        }
                    }
                    continue;
                }
                if (!linkElement->sheet())
                    title = nullAtom;
            }
            // Get the current preferred styleset. This is the
            // set of sheets that will be enabled.
#if ENABLE(SVG)
            if (e->hasTagName(SVGNames::styleTag))
                sheet = static_cast<SVGStyleElement*>(n)->sheet();
            else
#endif
            {
                if (e->hasTagName(linkTag))
                    sheet = static_cast<HTMLLinkElement*>(n)->sheet();
                else
                    // <STYLE> element
                    sheet = toHTMLStyleElement(e)->sheet();
            }
            // Check to see if this sheet belongs to a styleset
            // (thus making it PREFERRED or ALTERNATE rather than
            // PERSISTENT).
            AtomicString rel = e->getAttribute(relAttr);
            if (!enabledViaScript && !title.isEmpty()) {
                // Yes, we have a title.
                if (m_preferredStylesheetSetName.isEmpty()) {
                    // No preferred set has been established. If
                    // we are NOT an alternate sheet, then establish
                    // us as the preferred set. Otherwise, just ignore
                    // this sheet.
                    if (e->hasTagName(styleTag) || !rel.contains("alternate"))
                        m_preferredStylesheetSetName = m_selectedStylesheetSetName = title;
                }
                if (title != m_preferredStylesheetSetName)
                    sheet = 0;
            }

            if (rel.contains("alternate") && title.isEmpty())
                sheet = 0;
        }
        if (sheet)
            sheets.append(sheet);
    }
}

static bool matchesReservedStringEmail(const AtomicString& string)
{
    return string.contains("email", false /* caseSensitive */);
}