internal CssSimpleSelectorSequence(ICssSelectorSequence sequence, CssSimpleSelector otherSelector)
: base(CalculateSpecificity(sequence, otherSelector))
{
ArgChecker.AssertIsTrue <ArgumentException>(!(otherSelector is CssTypeSelector), "Selector sequence cannot contain more than one type selector.");
_typeSelector = sequence.TypeSelector;
_otherSelectors = sequence.OtherSelectors.Add(otherSelector);
}
internal CssNegationSelector(CssSimpleSelector operand)
: base(CalculateSpecificity(operand))
{
_operand = operand;
}
private static CssSpecificity CalculateSpecificity(CssSimpleSelector selector)
{
ArgChecker.AssertArgNotNull(selector, nameof(selector));
return(selector.Specificity);
}
/// <summary>
/// Creates a new <see cref="CssSimpleSelectorSequence"/> consisting of a given sequence with an additional selector appended.
/// </summary>
/// <param name="sequence">A <see cref="CssTypeSelector"/> or <see cref="CssSimpleSelectorSequence"/> instance.</param>
/// <param name="otherSelector">A simple, non-type selector to append to the original sequence.</param>
/// <returns>a new <see cref="CssSimpleSelectorSequence"/> consisting of the original <paramref name="sequence"/> followed
/// by <paramref name="otherSelector"/>.</returns>
public static ICssSelectorSequence Add(this ICssSelectorSequence sequence, CssSimpleSelector otherSelector)
{
return(new CssSimpleSelectorSequence(sequence, otherSelector));
}
private static CssSpecificity CalculateSpecificity(ICssSelectorSequence sequence, CssSimpleSelector otherSelector)
{
ArgChecker.AssertArgNotNull(sequence, nameof(sequence));
ArgChecker.AssertArgNotNull(otherSelector, nameof(otherSelector));
return(sequence.Specificity + otherSelector.Specificity);
}