public SanitizerOperation CheckAttribute(HtmlAttribute attribute)
{
// Check the url. We assume that there's no use in keeping for example a link tag without a href, so flatten the tag on failure.
if (!HtmlSanitizer.AttributeUrlCheck(attribute))
{
if (!HtmlSanitizer.AttributeBase64Check(attribute))
{
return(SanitizerOperation.FlattenTag);
}
}
return(SanitizerOperation.DoNothing);
}