/// <summary>
/// Returns a list of the elements within the document (using depth-first pre-order traversal
/// of the document's nodes) that match the specified group of selectors.
/// Requires either a non-empty nodelist or a valid scope node.
/// </summary>
/// <param name="nodes">The nodes to take as source.</param>
/// <param name="selectorText">A string containing one or more CSS selectors separated by commas.</param>
/// <param name="scopeNode">The optional node to take as scope.</param>
/// <returns>A HTMLCollection with all elements that match the selection.</returns>
public static IHtmlCollection <IElement> QuerySelectorAll(this INodeList nodes, String selectorText, INode?scopeNode = null)
{
var scope = GetScope(scopeNode);
var sg = CreateSelector(nodes, scope, selectorText);
if (sg != null)
{
return(sg.MatchAll(nodes.OfType <IElement>(), scope));
}
return(new HtmlCollection <IElement>(Array.Empty <IElement>()));
}
/// <summary>
/// Returns the first element within the document (using depth-first pre-order traversal
/// of the document's nodes) that matches the specified group of selectors.
/// Requires either a non-empty nodelist or a valid scope node.
/// </summary>
/// <param name="nodes">The nodes to take as source.</param>
/// <param name="selectorText">A string containing one or more CSS selectors separated by commas.</param>
/// <param name="scopeNode">The optional node to take as scope.</param>
/// <returns>An element object.</returns>
public static IElement?QuerySelector(this INodeList nodes, String selectorText, INode?scopeNode = null)
{
var scope = GetScope(scopeNode);
var sg = CreateSelector(nodes, scope, selectorText);
if (sg != null)
{
return(sg.MatchAny(nodes.OfType <IElement>(), scope));
}
return(null);
}
