public static void ApplyLayoutAttributes(PdfName role, AbstractRenderer renderer, PdfDocument doc) {
if (!(renderer.GetModelElement() is IAccessibleElement)) {
return;
}
int tagType = PdfStructElem.IdentifyType(doc, role);
PdfDictionary attributes = new PdfDictionary();
PdfName attributesType = PdfName.Layout;
attributes.Put(PdfName.O, attributesType);
PdfDictionary roleMap = doc.GetStructTreeRoot().GetRoleMap();
if (roleMap.ContainsKey(role)) {
role = roleMap.GetAsName(role);
}
//TODO WritingMode attribute applying when needed
ApplyCommonLayoutAttributes(renderer, attributes);
if (tagType == PdfStructElem.BlockLevel) {
ApplyBlockLevelLayoutAttributes(role, renderer, attributes, doc);
}
if (tagType == PdfStructElem.InlineLevel) {
ApplyInlineLevelLayoutAttributes(renderer, attributes);
}
if (tagType == PdfStructElem.Illustration) {
ApplyIllustrationLayoutAttributes(renderer, attributes);
}
if (attributes.Size() > 1) {
AccessibilityProperties properties = ((IAccessibleElement)renderer.GetModelElement()).GetAccessibilityProperties
();
RemoveSameAttributesTypeIfPresent(properties, attributesType);
properties.AddAttributes(attributes);
}
}
internal virtual void ThrowExceptionIfRoleIsInvalid(PdfName role)
{
if (forbidUnknownRoles && PdfStructElem.IdentifyType(GetDocument(), role) == PdfStructElem.Unknown)
{
throw new PdfException(PdfException.RoleIsNotMappedWithAnyStandardRole);
}
}
