public void add_media_list(media_query_list list)
{
if (list != null && !_media_lists.Contains(list))
{
_media_lists.Add(list);
}
}
public void parse_stylesheet(string str, string baseurl, document doc, media_query_list media)
{
var text = str;
// remove comments
var c_start = text.IndexOf("/*");
while (c_start != -1)
{
var c_end = text.IndexOf("*/", c_start + 2);
text = text.Substring(0, c_start) + text.Substring(c_end + 2);
c_start = text.IndexOf("/*");
}
var pos = text.FindFirstNotOf(" \n\r\t");
while (pos != -1)
{
while (pos != -1 && text[pos] == '@')
{
var sPos = pos;
pos = text.IndexOfAny(delims1, pos);
if (pos != -1 && text[pos] == '{')
{
pos = html.find_close_bracket(text, pos, '{', '}');
}
parse_atrule(pos != -1 ? text.Substring(sPos, pos - sPos + 1) : text.Substring(sPos), baseurl, doc, media);
if (pos != -1)
{
pos = text.FindFirstNotOf(" \n\r\t", pos + 1);
}
}
if (pos == -1)
{
break;
}
var style_start = text.IndexOf("{", pos);
var style_end = text.IndexOf("}", pos);
if (style_start != -1 && style_end != -1)
{
var st = new style();
st.add(text.Substring(style_start + 1, style_end - style_start - 1), baseurl);
parse_selectors(text.Substring(pos, style_start - pos), st, media);
if (media != null && doc != null)
{
doc.add_media_list(media);
}
pos = style_end + 1;
}
else
{
pos = -1;
}
if (pos != -1)
{
pos = text.FindFirstNotOf(" \n\r\t", pos);
}
}
}
void parse_atrule(string text, string baseurl, document doc, media_query_list media)
{
if (text.StartsWith("@import"))
{
var sPos = 7;
var iStr = text.Substring(sPos);
if (iStr[iStr.Length - 1] == ';')
{
iStr = iStr.Remove(iStr.Length - 1);
}
iStr = iStr.Trim();
var tokens = new List <string>();
html.split_string(iStr, tokens, " ", "", "(\"");
if (tokens.Count != 0)
{
parse_css_url(tokens.First(), out var url);
if (string.IsNullOrEmpty(url))
{
url = tokens.First();
}
tokens.RemoveAt(0);
if (doc != null)
{
var doc_cont = doc.container;
if (doc_cont != null)
{
var css_baseurl = baseurl ?? string.Empty;
doc_cont.import_css(out var css_text, url, ref css_baseurl);
if (!string.IsNullOrEmpty(css_text))
{
var new_media = media;
if (tokens.Count != 0)
{
var media_str = string.Join(" ", tokens);
new_media = media_query_list.create_from_string(media_str, doc);
if (new_media == null)
{
new_media = media;
}
}
parse_stylesheet(css_text, css_baseurl, doc, new_media);
}
}
}
}
}
else if (text.StartsWith("@media"))
{
var b1 = text.IndexOf('{');
var b2 = text.LastIndexOf('}');
if (b1 != -1)
{
var media_type = text.Substring(6, b1 - 6).Trim();
var new_media = media_query_list.create_from_string(media_type, doc);
var media_style = b2 != -1 ? text.Substring(b1 + 1, b2 - b1 - 1) : text.Substring(b1 + 1);
parse_stylesheet(media_style, baseurl, doc, new_media);
}
}
}
public css_selector(css_selector val)
{
_right = val._right;
_left = val._left; //: shared?
_combinator = val._combinator;
_specificity = val._specificity;
_order = val._order;
_media_query = val._media_query;
}
public static media_query_list create_from_string(string str, document doc)
{
var list = new media_query_list();
var tokens = new List <string>();
html.split_string(str, tokens, ",");
for (var i = 0; i < tokens.Count; i++)
{
var tok = tokens[i].Trim().ToLowerInvariant();
var query = media_query.create_from_string(tok, doc);
if (query != null)
{
list._queries.Add(query);
}
}
return(list._queries.Count != 0 ? list : null);
}
bool parse_selectors(string txt, style styles, media_query_list media)
{
var tokens = new List <string>();
html.split_string(txt.Trim(), tokens, ",");
var added_something = false;
foreach (var tok in tokens)
{
var selector = new css_selector(media);
selector._style = styles;
if (selector.parse(tok.Trim()))
{
selector.calc_specificity();
add_selector(selector);
added_something = true;
}
}
return(added_something);
}
public css_selector(media_query_list media = null)
{
_media_query = media;
_combinator = css_combinator.descendant;
_order = 0;
}
public media_query_list(media_query_list val)
{
_is_used = val._is_used;
_queries = val._queries;
}
