/// <summary>
/// 创建层叠选择器
/// </summary>
/// <param name="elements">作为范畴限定的元素集</param>
/// <param name="expression">选择器表达式</param>
/// <returns>层叠选择器</returns>
public static ISelector Create(IEnumerable <IHtmlElement> elements, string expression)
{
if (elements == null)
{
throw new ArgumentNullException("elements");
}
if (expression == null)
{
throw new ArgumentNullException("expression");
}
var selector = CssParser.ParseSelector(expression);
if (elements.IsNullOrEmpty())
{
return(selector);
}
var relativeSelector = new CssAncetorRelativeSelector(new CssElementsRestrictionSelector(elements));
return(Create(relativeSelector, selector));
}
/// <summary>
/// 创建层叠选择器
/// </summary>
/// <param name="elements">作为范畴限定的元素集</param>
/// <param name="expression">选择器表达式</param>
/// <returns>层叠选择器</returns>
public static ISelector Create( IEnumerable<IHtmlElement> elements, string expression )
{
if ( elements == null )
throw new ArgumentNullException( "elements" );
if ( expression == null )
throw new ArgumentNullException( "expression" );
var selector = CssParser.ParseSelector( expression );
if ( elements.IsNullOrEmpty() )
return selector;
var relativeSelector = new CssAncetorRelativeSelector( new CssElementsRestrictionSelector( elements ) );
return Create( relativeSelector, selector );
}