protected virtual bool HasRelCanonicalPointingToDifferentUrl(IDomElement e, string orginalUrl)
{
return(e.HasAttribute("rel") && !string.IsNullOrWhiteSpace(e.Attributes["rel"]) &&
string.Equals(e.Attributes["rel"], "canonical", StringComparison.OrdinalIgnoreCase) &&
e.HasAttribute("href") && !string.IsNullOrWhiteSpace(e.Attributes["href"]) &&
!string.Equals(e.Attributes["href"], orginalUrl, StringComparison.OrdinalIgnoreCase));
}
protected virtual bool HasRelCanonicalPointingToDifferentUrl(IDomElement e, string orginalUrl)
{
return e.HasAttribute("rel") && !string.IsNullOrWhiteSpace(e.Attributes["rel"]) &&
string.Equals(e.Attributes["rel"], "canonical", StringComparison.OrdinalIgnoreCase) &&
e.HasAttribute("href") && !string.IsNullOrWhiteSpace(e.Attributes["href"]) &&
!string.Equals(e.Attributes["href"], orginalUrl, StringComparison.OrdinalIgnoreCase);
}
/// <summary>
/// Has "rel" canonical pointing To different url
/// </summary>
/// <param name="element"></param>
/// <param name="orginalUrl"></param>
/// <returns></returns>
protected virtual bool HasRelCanonicalPointingToDifferentUrl(IDomElement element, string orginalUrl)
{
return(element.HasAttribute(Rel) &&
!string.IsNullOrWhiteSpace(element.Attributes[Rel]) &&
string.Equals(element.Attributes[Rel], Canonical, StringComparison.OrdinalIgnoreCase) &&
element.HasAttribute(Href) &&
!string.IsNullOrWhiteSpace(element.Attributes[Href]) &&
!string.Equals(element.Attributes[Href], orginalUrl, StringComparison.OrdinalIgnoreCase));
}
private bool IsValidOGNode(IDomElement elem)
{
if (!elem.HasAttribute("property"))
{
return(false);
}
return(elem.GetAttribute("property").StartsWith("og:"));
}
public override MatchResult Match <TDependencyObject, TDependencyProperty>(StyleSheet styleSheet, ref IDomElement <TDependencyObject, TDependencyProperty> domElement, SelectorMatcher[] fragments, ref int currentIndex)
{
if (!domElement.HasAttribute(PropertyName))
{
return(MatchResult.ItemFailed);
}
var dependencyProperty = domElement.Attributes[PropertyName];
domElement.EnsureAttributeWatcher(dependencyProperty);
// just check if it exists - here: is not null
if (Value == null)
{
return(domElement.GetAttributeValue(dependencyProperty) != null ? MatchResult.Success : MatchResult.ItemFailed);
}
if (Operator == "=")
{
return(domElement.GetAttributeValue(dependencyProperty)?.ToString() == Value ? MatchResult.Success : MatchResult.ItemFailed);
}
//else if (Operator == "~=")
//{
// var v = domElement.GetAttributeValue(dependencyProperty);
// if (v is IEnumerable e)
// {
// foreach (var item in e)
// {
// if (item?.ToString() == Value)
// {
// return MatchResult.Success;
// }
// }
// }
// return MatchResult.ItemFailed;
//}
//else if (Operator == "|=")
//{
// var v = domElement.GetAttributeValue(dependencyProperty);
// if (v is IEnumerable e)
// {
// foreach (var item in e)
// {
// if (item?.ToString() == Value)
// {
// return MatchResult.Success;
// }
// }
// }
// return MatchResult.ItemFailed;
//}
return(MatchResult.ItemFailed);
}
protected virtual bool HasRelNoFollow(IDomElement e)
{
return _config.IsRespectAnchorRelNoFollowEnabled && (e.HasAttribute("rel") && e.GetAttribute("rel").ToLower().Trim() == "nofollow");
}
private bool HasRelNoFollow(IDomElement e)
{
return _isRespectAnchorRelNoFollowEnabled && (e.HasAttribute("rel") && e.GetAttribute("rel").ToLower().Trim() == "nofollow");
}
private bool HasRelNoFollow(IDomElement e)
{
return(_isRespectAnchorRelNoFollowEnabled && (e.HasAttribute("rel") && e.GetAttribute("rel").ToLower().Trim() == "nofollow"));
}
protected virtual bool HasRelNoFollow(IDomElement e)
{
return(_config.IsRespectAnchorRelNoFollowEnabled && (e.HasAttribute("rel") && e.GetAttribute("rel").ToLower().Trim() == "nofollow"));
}
/// <summary>
/// True, if element has "rel" attribute == "nofollow"
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
protected virtual bool HasRelNoFollow(IDomElement element)
{
return(Config.IsRespectAnchorRelNoFollowEnabled &&
element.HasAttribute(Rel) &&
element.GetAttribute(Rel).ToLower().Trim() == NoFollow);
}