C++ (Cpp) StyleSheetContents::singleOwnerDocument示例

示例#1

文件： StyleEngine.cpp 项目： Drakey83/steamlink-sdk

PassRefPtrWillBeRawPtr<CSSStyleSheet> StyleEngine::createSheet(Element* e, const String& text, TextPosition startPosition, bool createdByParser)
{
    RefPtrWillBeRawPtr<CSSStyleSheet> styleSheet = nullptr;

    e->document().styleEngine()->addPendingSheet();

    if (!e->document().inQuirksMode()) {
        AtomicString textContent(text);

        WillBeHeapHashMap<AtomicString, RawPtrWillBeMember<StyleSheetContents> >::AddResult result = m_textToSheetCache.add(textContent, nullptr);
        if (result.isNewEntry || !result.storedValue->value) {
            styleSheet = StyleEngine::parseSheet(e, text, startPosition, createdByParser);
            if (result.isNewEntry && isCacheableForStyleElement(*styleSheet->contents())) {
                result.storedValue->value = styleSheet->contents();
                m_sheetToTextCache.add(styleSheet->contents(), textContent);
            }
        } else {
            StyleSheetContents* contents = result.storedValue->value;
            ASSERT(contents);
            ASSERT(isCacheableForStyleElement(*contents));
            ASSERT(contents->singleOwnerDocument() == e->document());
            styleSheet = CSSStyleSheet::createInline(contents, e, startPosition);
        }
    } else {
        // FIXME: currently we don't cache StyleSheetContents inQuirksMode.
        styleSheet = StyleEngine::parseSheet(e, text, startPosition, createdByParser);
    }

    ASSERT(styleSheet);
    styleSheet->setTitle(e->title());
    return styleSheet;
}

示例#2

文件： StyleEngine.cpp 项目： krockot/mojo

PassRefPtr<CSSStyleSheet> StyleEngine::createSheet(Element* e, const String& text, TextPosition startPosition, bool createdByParser)
{
    RefPtr<CSSStyleSheet> styleSheet = nullptr;

    AtomicString textContent(text);

    HashMap<AtomicString, RawPtr<StyleSheetContents> >::AddResult result = m_textToSheetCache.add(textContent, nullptr);
    if (result.isNewEntry || !result.storedValue->value) {
        styleSheet = StyleEngine::parseSheet(e, text, startPosition, createdByParser);
        if (result.isNewEntry && isCacheableForStyleElement(*styleSheet->contents())) {
            result.storedValue->value = styleSheet->contents();
            m_sheetToTextCache.add(styleSheet->contents(), textContent);
        }
    } else {
        StyleSheetContents* contents = result.storedValue->value;
        ASSERT(contents);
        ASSERT(isCacheableForStyleElement(*contents));
        ASSERT(contents->singleOwnerDocument() == e->document());
        styleSheet = CSSStyleSheet::createInline(contents, e, startPosition);
    }

    ASSERT(styleSheet);
    return styleSheet;
}