public HtmlElement QuerySelector(QuerySelectorPatterns patts)
{
//eval child node
if (ChildrenCount < 1)
{
return(null);
}
//----------
foreach (DomNode childnode in this.GetChildNodeIterForward())
{
if (childnode.NodeKind == HtmlNodeKind.OpenElement)
{
HtmlElement htmlElem = (HtmlElement)childnode;
if (!patts.Evaluate((HtmlElement)childnode))
{
//not found
HtmlElement found = ((HtmlElement)childnode).QuerySelector(patts);
if (found != null)
{
return(found);
}
}
else
{
//found
return((HtmlElement)childnode);
}
}
}
return(null);
}
public HtmlNodeList QuerySelectAll(QuerySelectorPatterns patts)
{
HtmlNodeList nodelist = new HtmlNodeList();
QuerySelectAll(this, patts, nodelist);
return(nodelist);
}
public static QuerySelectorPatterns Parse(string querySelectorStr)
{
QuerySelectorPatterns querySelectorPattern = new QuerySelectorPatterns();
//https://developer.mozilla.org/en-US/docs/Web/API/Document_object_model/Locating_DOM_elements_using_selectors
//Selectors
//The selector methods accept one or more comma-separated selectors to determine what element or
//elements should be returned. For example, to select all paragraph(p) elements in
//a document whose CSS class is either warning or note, you can do the following:
//var special = document.querySelectorAll("p.warning, p.note");
// You can also query by ID.For example:
// var el = document.querySelector("#main, #basic, #exclamation");
// After executing the above code, el contains the first element in the document whose ID is one of main, basic, or exclamation.
// You may use any CSS selectors with the querySelector() and querySelectorAll() methods.
//TODO: review here again
string[] patts = querySelectorStr.Split(seps, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < patts.Length; ++i)
{
//parse each pattern
QuerySelectorPattern patt = ParsePattern(patts[i].Trim());
if (patt != null)
{
querySelectorPattern.AddPattern(patt);
}
}
return(querySelectorPattern);
}
public HtmlNodeList QuerySelectAll(string pattern)
{
QuerySelectorPatterns patts = QuerySelectorStringParser.Parse(pattern);
if (patts == null)
{
return(null);
}
return(QuerySelectAll(patts));
}
public HtmlElement QuerySelector(string pattern)
{
//TODO:
//parse selector pattern
QuerySelectorPatterns patts = QuerySelectorStringParser.Parse(pattern);
if (patts == null)
{
return(null);
}
return(QuerySelector(patts));
}
static void QuerySelectAll(HtmlElement elem, QuerySelectorPatterns patts, HtmlNodeList nodelist)
{
if (elem.ChildrenCount < 1)
{
return;
}
//----------
foreach (DomNode childnode in elem.GetChildNodeIterForward())
{
if (childnode.NodeKind == HtmlNodeKind.OpenElement)
{
HtmlElement htmlElem = (HtmlElement)childnode;
if (patts.Evaluate((HtmlElement)childnode))
{
//found
nodelist.AddSelectedItem(htmlElem);
}
QuerySelectAll(htmlElem, patts, nodelist);
}
}
}