public void Visit(PseudoFunction selector)
{
switch (selector.Type)
{
case PseudoTypes.FunctionNot:
var visitor = new MatchVisitor(new HtmlQueryEngine());
var sel = selector.Body as ISelector;
_matches = _matches.Where(n =>
{
visitor.Initialize(n);
sel.Visit(visitor);
return !visitor.IsMatch();
});
break;
case PseudoTypes.FunctionContains:
case PseudoTypes.FunctionDir:
default:
NotSupported();
break;
}
}
public static IEnumerable<Property> ApplicableProperties(this IEnumerable<StyleRule> rules, IQueryableNode node, IQueryEngine engine, StringComparison comparison, GlobalStyleContext settings)
{
var visitor = new MatchVisitor(engine);
visitor.Comparison = comparison;
var terms = new Dictionary<string, TermSpecificity>();
TermSpecificity existing;
int specificity = 0;
int propSpecificity;
foreach (var style in rules)
{
if (style.Selector != null)
{
visitor.Initialize(node);
style.Selector.Visit(visitor);
}
if (style.Selector == null || visitor.IsMatch())
{
specificity = style.Selector == null ? 0 : (visitor.MatchSpecificity > 0 ? visitor.MatchSpecificity : style.Selector.GetSpecificity());
foreach (var prop in style.Declarations.SelectMany(p => p.Expand(settings.LeftToRight)))
{
propSpecificity = specificity + (prop.Important ? (1 << 20) : 0);
if (terms.TryGetValue(prop.Name, out existing))
{
if (propSpecificity >= existing.Specificity)
{
existing.Property = prop;
}
}
else
{
terms[prop.Name] = new TermSpecificity() { Property = prop, Specificity = propSpecificity };
}
}
}
}
return terms.Values.Select(v => v.Property);
}
