public IEnumerable <IResource> Select(IResource resource)
{
IEnumerable <IResource> Convert(Attr a, IElement e)
{
IEnumerable <IResource> ToSeq(string s)
{
return(s != null ? new[] { new StringResource(s) } : new IResource[] { });
}
switch (a)
{
case Attr.Element:
return(new IResource[] { new ObjectResource(e) });
case Attr.InnerHtml:
return(ToSeq(e.InnerHtml));
case Attr.OuterHtml:
return(ToSeq(e.OuterHtml));
case Attr.TextContent:
return(ToSeq(e.TextContent));
case Attr.Id:
return(ToSeq(e.Id));
case Attr.Class:
return(ToSeq(e.ClassName));
case Attr.SplitClasses:
return(e.ClassList.Select(c => new StringResource(c)));
case Attr.Href:
return(ToSeq(e.Attributes["href"]?.Value));
case Attr.Src:
return(ToSeq(e.Attributes["src"]?.Value));
case Attr.Title:
return(ToSeq(e.Attributes["title"]?.Value));
case Attr.Name:
return(ToSeq(e.Attributes["name"]?.Value));
default:
throw new InvalidOperationException($"{a} is invalid attr.");
}
}
return(Convert(attr, resource.AsElement()));
}
public IEnumerable <IResource> Select(IResource resource)
{
return(resource.AsElement().QuerySelectorAll(selector).Select(e => new ElementResource(e)));
}