C++ ContainerNode::hasTagName方法代码示例

SVGGradientElement* RenderSVGGradientStop::gradientElement() const
{
    ContainerNode* parentNode = node()->parentNode();
    if (parentNode->hasTagName(linearGradientTag) || parentNode->hasTagName(radialGradientTag))
        return static_cast<SVGGradientElement*>(parentNode);
    return 0;
}

bool HTMLFormElement::rendererIsNeeded(const RenderStyle& style)
{
    if (!m_wasDemoted)
        return HTMLElement::rendererIsNeeded(style);

    ContainerNode* node = parentNode();
    RenderObject* parentRenderer = node->renderer();
    // FIXME: Shouldn't we also check for table caption (see |formIsTablePart| below).
    // FIXME: This check is not correct for Shadow DOM.
    bool parentIsTableElementPart = (parentRenderer->isTable() && isHTMLTableElement(node))
        || (parentRenderer->isTableRow() && node->hasTagName(trTag))
        || (parentRenderer->isTableSection() && node->hasTagName(tbodyTag))
        || (parentRenderer->isRenderTableCol() && node->hasTagName(colTag))
        || (parentRenderer->isTableCell() && node->hasTagName(trTag));

    if (!parentIsTableElementPart)
        return true;

    EDisplay display = style.display();
    bool formIsTablePart = display == TABLE || display == INLINE_TABLE || display == TABLE_ROW_GROUP
        || display == TABLE_HEADER_GROUP || display == TABLE_FOOTER_GROUP || display == TABLE_ROW
        || display == TABLE_COLUMN_GROUP || display == TABLE_COLUMN || display == TABLE_CELL
        || display == TABLE_CAPTION;

    return formIsTablePart;
}

HTMLSelectElement* HTMLOptionElement::ownerSelectElement() const
{
    ContainerNode* select = parentNode();
    while (select && !(select->hasTagName(selectTag) || select->hasTagName(keygenTag)))
        select = select->parentNode();

    if (!select)
        return 0;

    return static_cast<HTMLSelectElement*>(select);
}

void HTMLFormControlElement::updateFieldSetAndLegendAncestor() const
{
    m_fieldSetAncestor = 0;
    m_legendAncestor = 0;
    for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
        if (!m_legendAncestor && ancestor->hasTagName(legendTag))
            m_legendAncestor = static_cast<HTMLLegendElement*>(ancestor);
        if (ancestor->hasTagName(fieldsetTag)) {
            m_fieldSetAncestor = static_cast<HTMLFieldSetElement*>(ancestor);
            break;
        }
    }
    m_fieldSetAncestorValid = true;
}

SVGElement* SVGElement::viewportElement() const
{
    // This function needs shadow tree support - as RenderSVGContainer uses this function
    // to determine the "overflow" property. <use> on <symbol> wouldn't work otherwhise.
    ContainerNode* n = parentOrShadowHostNode();
    while (n) {
        if (n->hasTagName(SVGNames::svgTag) || isSVGImageElement(n) || n->hasTagName(SVGNames::symbolTag))
            return toSVGElement(n);

        n = n->parentOrShadowHostNode();
    }

    return 0;
}

void HTMLFormControlElement::updateAncestorDisabledState() const
{
    HTMLFieldSetElement* fieldSetAncestor = 0;
    ContainerNode* legendAncestor = 0;
    for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
        if (!legendAncestor && ancestor->hasTagName(legendTag))
            legendAncestor = ancestor;
        if (ancestor->hasTagName(fieldsetTag)) {
            fieldSetAncestor = toHTMLFieldSetElement(ancestor);
            break;
        }
    }
    m_ancestorDisabledState = (fieldSetAncestor && fieldSetAncestor->isDisabledFormControl() && !(legendAncestor && legendAncestor == fieldSetAncestor->legend())) ? AncestorDisabledStateDisabled : AncestorDisabledStateEnabled;
}

void SVGFontFaceFormatElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
    SVGElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);

    if (!parentNode() || !parentNode()->hasTagName(font_face_uriTag))
        return;
    
    ContainerNode* ancestor = parentNode()->parentNode();
    if (!ancestor || !ancestor->hasTagName(font_face_srcTag))
        return;
    
    ancestor = ancestor->parentNode();
    if (ancestor && ancestor->hasTagName(font_faceTag))
        static_cast<SVGFontFaceElement*>(ancestor)->rebuildFontFace();
}

void SVGFontFaceFormatElement::childrenChanged(const ChildChange& change)
{
    SVGElement::childrenChanged(change);

    if (!parentNode() || !parentNode()->hasTagName(font_face_uriTag))
        return;
    
    ContainerNode* ancestor = parentNode()->parentNode();
    if (!ancestor || !ancestor->hasTagName(font_face_srcTag))
        return;
    
    ancestor = ancestor->parentNode();
    if (ancestor && ancestor->hasTagName(font_faceTag))
        toSVGFontFaceElement(ancestor)->rebuildFontFace();
}

bool HTMLEmbedElement::rendererIsNeeded(const RenderStyle& style)
{
    if (isImageType())
        return HTMLPlugInImageElement::rendererIsNeeded(style);

    // If my parent is an <object> and is not set to use fallback content, I
    // should be ignored and not get a renderer.
    ContainerNode* p = parentNode();
    if (p && p->hasTagName(objectTag)) {
        if (!p->renderer())
            return false;
        if (!toHTMLObjectElement(p)->useFallbackContent()) {
            ASSERT(!p->renderer()->isEmbeddedObject());
            return false;
        }
    }

#if ENABLE(DASHBOARD_SUPPORT)
    // Workaround for <rdar://problem/6642221>.
    if (document().frame()->settings().usesDashboardBackwardCompatibilityMode())
        return true;
#endif

    return HTMLPlugInImageElement::rendererIsNeeded(style);
}

void SVGFELightElement::svgAttributeChanged(const QualifiedName& attrName)
{
    SVGElement::svgAttributeChanged(attrName);

    if (attrName == SVGNames::azimuthAttr
        || attrName == SVGNames::elevationAttr
        || attrName == SVGNames::xAttr
        || attrName == SVGNames::yAttr
        || attrName == SVGNames::zAttr
        || attrName == SVGNames::pointsAtXAttr
        || attrName == SVGNames::pointsAtYAttr
        || attrName == SVGNames::pointsAtZAttr
        || attrName == SVGNames::specularExponentAttr
        || attrName == SVGNames::limitingConeAngleAttr) {
        ContainerNode* parent = parentNode();
        if (!parent)
            return;

        RenderObject* renderer = parent->renderer();
        if (!renderer || !renderer->isSVGResourceFilterPrimitive())
            return;

        if (parent->hasTagName(SVGNames::feDiffuseLightingTag)) {
            SVGFEDiffuseLightingElement* diffuseLighting = static_cast<SVGFEDiffuseLightingElement*>(parent);
            diffuseLighting->lightElementAttributeChanged(this, attrName);
            return;
        }
        // Handler for SpecularLighting has not implemented yet.
        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
    }
}

HTMLTableElement* HTMLTablePartElement::findParentTable() const
{
    ContainerNode* parent = parentNode();
    while (parent && !parent->hasTagName(tableTag))
        parent = parent->parentNode();
    return static_cast<HTMLTableElement*>(parent);
}

HTMLTableElement* HTMLTablePartElement::findParentTable() const
{
    ContainerNode* parent = NodeRenderingTraversal::parent(this);
    while (parent && !parent->hasTagName(tableTag))
        parent = NodeRenderingTraversal::parent(parent);
    return toHTMLTableElement(parent);
}

HTMLElement* enclosingList(Node* node)
{
    if (!node)
        return 0;
        
    Node* root = highestEditableRoot(firstPositionInOrBeforeNode(node));
    
    for (ContainerNode* n = node->parentNode(); n; n = n->parentNode()) {
        if (n->hasTagName(ulTag) || n->hasTagName(olTag))
            return toHTMLElement(n);
        if (n == root)
            return 0;
    }
    
    return 0;
}

String HTMLOptionElement::textIndentedToRespectGroupLabel() const
{
    ContainerNode* parent = parentNode();
    if (parent && parent->hasTagName(optgroupTag))
        return "    " + text();
    return text();
}

void HTMLOptGroupElement::recalcSelectOptions()
{
    ContainerNode* select = parentNode();
    while (select && !select->hasTagName(selectTag))
        select = select->parentNode();
    if (select)
        toHTMLSelectElement(select)->setRecalcListItems();
}