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);
}