C++ HTMLDocument::removeExtraNamedItem方法代码示例

void HTMLObjectElement::updateDocNamedItem()
{
    // The rule is "<object> elements with no children other than
    // <param> elements, unknown elements and whitespace can be
    // found by name in a document, and other <object> elements cannot."
    bool wasNamedItem = m_docNamedItem;
    bool isNamedItem = true;
    Node* child = firstChild();
    while (child && isNamedItem) {
        if (child->isElementNode()) {
            Element* element = static_cast<Element*>(child);
            if (HTMLElement::isRecognizedTagName(element->tagQName()) && !element->hasTagName(paramTag))
                isNamedItem = false;
        } else if (child->isTextNode()) {
            if (!static_cast<Text*>(child)->containsOnlyWhitespace())
                isNamedItem = false;
        } else
            isNamedItem = false;
        child = child->nextSibling();
    }
    if (isNamedItem != wasNamedItem && document()->isHTMLDocument()) {
        HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
        if (isNamedItem) {
            document->addNamedItem(m_name);
            document->addExtraNamedItem(m_id);
        } else {
            document->removeNamedItem(m_name);
            document->removeExtraNamedItem(m_id);
        }
    }
    m_docNamedItem = isNamedItem;
}

void HTMLAppletElement::parseMappedAttribute(MappedAttribute* attr)
{
    if (attr->name() == altAttr ||
        attr->name() == archiveAttr ||
        attr->name() == codeAttr ||
        attr->name() == codebaseAttr ||
        attr->name() == mayscriptAttr ||
        attr->name() == objectAttr) {
        // Do nothing.
    } else if (attr->name() == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (attr->name() == idAttr) {
        const AtomicString& newId = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLPlugInElement::parseMappedAttribute(attr);
    } else
        HTMLPlugInElement::parseMappedAttribute(attr);
}

void HTMLIFrameElement::parseMappedAttribute(Attribute* attr)
{
    if (attr->name() == widthAttr)
        addCSSLength(attr, CSSPropertyWidth, attr->value());
    else if (attr->name() == heightAttr)
        addCSSLength(attr, CSSPropertyHeight, attr->value());
    else if (attr->name() == alignAttr)
        addHTMLAlignment(attr);
    else if (attr->name() == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_name);
            document->addExtraNamedItem(newName);
        }
        m_name = newName;
    } else if (attr->name() == frameborderAttr) {
        // Frame border doesn't really match the HTML4 spec definition for iframes.  It simply adds
        // a presentational hint that the border should be off if set to zero.
        if (!attr->isNull() && !attr->value().toInt())
            // Add a rule that nulls out our border width.
            addCSSLength(attr, CSSPropertyBorderWidth, "0");
    } else if (attr->name() == sandboxAttr)
        setSandboxFlags(parseSandboxAttribute(attr));
    else
        HTMLFrameElementBase::parseMappedAttribute(attr);
}

void HTMLImageElement::parseMappedAttribute(Attribute* attr)
{
    const QualifiedName& attrName = attr->name();
    if (attrName == altAttr) {
        if (renderer() && renderer()->isImage())
            toRenderImage(renderer())->updateAltText();
    } else if (attrName == srcAttr)
        m_imageLoader.updateFromElementIgnoringPreviousError();
    else if (attrName == widthAttr)
        addCSSLength(attr, CSSPropertyWidth, attr->value());
    else if (attrName == heightAttr)
        addCSSLength(attr, CSSPropertyHeight, attr->value());
    else if (attrName == borderAttr) {
        // border="noborder" -> border="0"
        applyBorderAttribute(attr);
    } else if (attrName == vspaceAttr) {
        addCSSLength(attr, CSSPropertyMarginTop, attr->value());
        addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
    } else if (attrName == hspaceAttr) {
        addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
        addCSSLength(attr, CSSPropertyMarginRight, attr->value());
    } else if (attrName == alignAttr)
        addHTMLAlignment(attr);
    else if (attrName == valignAttr)
        addCSSProperty(attr, CSSPropertyVerticalAlign, attr->value());
    else if (attrName == usemapAttr)
        setIsLink(!attr->isNull());
    else if (attrName == onabortAttr)
        setAttributeEventListener(eventNames().abortEvent, createAttributeEventListener(this, attr));
    else if (attrName == onloadAttr)
        setAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(this, attr));
    else if (attrName == onbeforeloadAttr)
        setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, attr));
    else if (attrName == compositeAttr) {
        if (!parseCompositeOperator(attr->value(), m_compositeOperator))
            m_compositeOperator = CompositeSourceOver;
    } else if (attrName == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (isIdAttributeName(attr->name())) {
        const AtomicString& newId = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLElement::parseMappedAttribute(attr);
    } else
        HTMLElement::parseMappedAttribute(attr);
}

void HTMLObjectElement::parseMappedAttribute(Attribute* attr)
{
    if (attr->name() == typeAttr) {
        m_serviceType = attr->value().lower();
        size_t pos = m_serviceType.find(";");
        if (pos != notFound)
            m_serviceType = m_serviceType.left(pos);
        if (renderer())
            setNeedsWidgetUpdate(true);
        if (!isImageType() && m_imageLoader)
            m_imageLoader.clear();
    } else if (attr->name() == dataAttr) {
        m_url = stripLeadingAndTrailingHTMLSpaces(attr->value());
        if (renderer()) {
            setNeedsWidgetUpdate(true);
            if (isImageType()) {
                if (!m_imageLoader)
                    m_imageLoader = adoptPtr(new HTMLImageLoader(this));
                m_imageLoader->updateFromElementIgnoringPreviousError();
            }
        }
    } else if (attr->name() == classidAttr) {
        m_classId = attr->value();
        if (renderer())
            setNeedsWidgetUpdate(true);
    } else if (attr->name() == onloadAttr)
        setAttributeEventListener(eventNames().loadEvent, NULL_METHOD_RESULT(this, attr));
    else if (attr->name() == onbeforeloadAttr)
        setAttributeEventListener(eventNames().beforeloadEvent, NULL_METHOD_RESULT(this, attr));
    else if (attr->name() == nameAttr) {
        const AtomicString& newName = attr->value();
        if (isDocNamedItem() && inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (attr->name() == borderAttr) {
        addCSSLength(attr, CSSPropertyBorderWidth, attr->value().toInt() ? attr->value() : "0");
        addCSSProperty(attr, CSSPropertyBorderTopStyle, CSSValueSolid);
        addCSSProperty(attr, CSSPropertyBorderRightStyle, CSSValueSolid);
        addCSSProperty(attr, CSSPropertyBorderBottomStyle, CSSValueSolid);
        addCSSProperty(attr, CSSPropertyBorderLeftStyle, CSSValueSolid);
    } else if (isIdAttributeName(attr->name())) {
        const AtomicString& newId = attr->value();
        if (isDocNamedItem() && inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLPlugInImageElement::parseMappedAttribute(attr);
    } else
        HTMLPlugInImageElement::parseMappedAttribute(attr);
}

void HTMLObjectElement::removedFromDocument()
{
    if (isDocNamedItem() && document()->isHTMLDocument()) {
        HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
        document->removeNamedItem(m_name);
        document->removeExtraNamedItem(m_id);
    }

    HTMLPlugInElement::removedFromDocument();
}

void HTMLImageElement::removedFromDocument()
{
    if (document()->isHTMLDocument()) {
        HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
        document->removeNamedItem(m_name);
        document->removeExtraNamedItem(m_id);
    }

    HTMLElement::removedFromDocument();
}

void HTMLObjectElement::parseMappedAttribute(Attribute* attr)
{
    String val = attr->value();
    int pos;
    if (attr->name() == typeAttr) {
        m_serviceType = val.lower();
        pos = m_serviceType.find(";");
        if (pos != -1)
          m_serviceType = m_serviceType.left(pos);
        if (renderer())
          m_needWidgetUpdate = true;
        if (!isImageType() && m_imageLoader)
          m_imageLoader.clear();
    } else if (attr->name() == dataAttr) {
        m_url = deprecatedParseURL(val);
        if (renderer())
          m_needWidgetUpdate = true;
        if (renderer() && isImageType()) {
          if (!m_imageLoader)
              m_imageLoader.set(new HTMLImageLoader(this));
          m_imageLoader->updateFromElementIgnoringPreviousError();
        }
    } else if (attr->name() == classidAttr) {
        m_classId = val;
        if (renderer())
          m_needWidgetUpdate = true;
    } else if (attr->name() == onloadAttr)
        setAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(this, attr));
    else if (attr->name() == onbeforeloadAttr)
        setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, attr));
    else if (attr->name() == nameAttr) {
        const AtomicString& newName = attr->value();
        if (isDocNamedItem() && inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (isIdAttributeName(attr->name())) {
        const AtomicString& newId = attr->value();
        if (isDocNamedItem() && inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLPlugInElement::parseMappedAttribute(attr);
    } else
        HTMLPlugInElement::parseMappedAttribute(attr);
}

void HTMLIFrameElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
    if (name == nameAttr) {
        if (inDocument() && document()->isHTMLDocument() && !isInShadowTree()) {
            HTMLDocument* document = toHTMLDocument(this->document());
            document->removeExtraNamedItem(m_name);
            document->addExtraNamedItem(value);
        }
        m_name = value;
    } else if (name == sandboxAttr) {
        String invalidTokens;
        setSandboxFlags(value.isNull() ? SandboxNone : SecurityContext::parseSandboxPolicy(value, invalidTokens));
        if (!invalidTokens.isNull())
            document()->addConsoleMessage(OtherMessageSource, ErrorMessageLevel, "Error while parsing the 'sandbox' attribute: " + invalidTokens);
    } else if (name == seamlessAttr) {
        // If we're adding or removing the seamless attribute, we need to force the content document to recalculate its StyleResolver.
        if (contentDocument())
            contentDocument()->styleResolverChanged(DeferRecalcStyle);
    } else
        HTMLFrameElementBase::parseAttribute(name, value);
}

void HTMLImageElement::parseMappedAttribute(MappedAttribute* attr)
{
    const QualifiedName& attrName = attr->name();
    if (attrName == altAttr) {
        if (renderer() && renderer()->isImage())
            static_cast<RenderImage*>(renderer())->updateAltText();
    } else if (attrName == srcAttr)
        m_imageLoader.updateFromElement();
    else if (attrName == widthAttr)
        addCSSLength(attr, CSSPropertyWidth, attr->value());
    else if (attrName == heightAttr)
        addCSSLength(attr, CSSPropertyHeight, attr->value());
    else if (attrName == borderAttr) {
        // border="noborder" -> border="0"
        addCSSLength(attr, CSSPropertyBorderWidth, attr->value().toInt() ? attr->value() : "0");
        addCSSProperty(attr, CSSPropertyBorderTopStyle, CSSValueSolid);
        addCSSProperty(attr, CSSPropertyBorderRightStyle, CSSValueSolid);
        addCSSProperty(attr, CSSPropertyBorderBottomStyle, CSSValueSolid);
        addCSSProperty(attr, CSSPropertyBorderLeftStyle, CSSValueSolid);
    } else if (attrName == vspaceAttr) {
        addCSSLength(attr, CSSPropertyMarginTop, attr->value());
        addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
    } else if (attrName == hspaceAttr) {
        addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
        addCSSLength(attr, CSSPropertyMarginRight, attr->value());
    } else if (attrName == alignAttr)
        addHTMLAlignment(attr);
    else if (attrName == valignAttr)
        addCSSProperty(attr, CSSPropertyVerticalAlign, attr->value());
    else if (attrName == usemapAttr) {
        if (attr->value().string()[0] == '#')
            usemap = attr->value();
        else
            usemap = document()->completeURL(parseURL(attr->value())).string();
        setIsLink(!attr->isNull());
    } else if (attrName == ismapAttr)
        ismap = true;
    else if (attrName == onabortAttr)
        setInlineEventListenerForTypeAndAttribute(eventNames().abortEvent, attr);
    else if (attrName == onloadAttr)
        setInlineEventListenerForTypeAndAttribute(eventNames().loadEvent, attr);
    else if (attrName == compositeAttr) {
        if (!parseCompositeOperator(attr->value(), m_compositeOperator))
            m_compositeOperator = CompositeSourceOver;
    } else if (attrName == nameAttr) {
        const AtomicString& newName = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeNamedItem(m_name);
            document->addNamedItem(newName);
        }
        m_name = newName;
    } else if (attr->name() == idAttr) {
        const AtomicString& newId = attr->value();
        if (inDocument() && document()->isHTMLDocument()) {
            HTMLDocument* document = static_cast<HTMLDocument*>(this->document());
            document->removeExtraNamedItem(m_id);
            document->addExtraNamedItem(newId);
        }
        m_id = newId;
        // also call superclass
        HTMLElement::parseMappedAttribute(attr);
    } else
        HTMLElement::parseMappedAttribute(attr);
}