/// <summary>
/// Creates a new shadow root.
/// </summary>
internal ShadowRoot(Element host, ShadowRootMode mode)
: base(host.Owner, "#shadow-root", NodeType.DocumentFragment)
{
_host = host;
_styleSheets = this.CreateStyleSheets();
_mode = mode;
}
/// <summary>
/// Creates a new shadow root.
/// </summary>
internal ShadowRoot(Element host, ShadowRootMode mode)
: base(host.Owner, "#shadow-root", NodeType.DocumentFragment)
{
_host = host;
_styleSheets = this.CreateStyleSheets();
_mode = mode;
}
protected virtual IList <string> GetFontUrls()
{
List <string> fontUrls = new List <string>();
if (this.IsLoaded == false)
{
return(fontUrls);
}
XmlNodeList xmlList = this.SelectNodes(".//svg:font-face-uri", this.NamespaceManager);
if (xmlList != null && xmlList.Count != 0)
{
foreach (XmlElement xmlNode in xmlList)
{
if (xmlNode.HasAttribute("href", SvgDocument.XLinkNamespace))
{
string fontUrl = xmlNode.GetAttribute("href", SvgDocument.XLinkNamespace);
if (!string.IsNullOrWhiteSpace(fontUrl))
{
fontUrls.Add(fontUrl);
}
}
else if (xmlNode.HasAttribute("href"))
{
string fontUrl = xmlNode.GetAttribute("href");
if (!string.IsNullOrWhiteSpace(fontUrl))
{
fontUrls.Add(fontUrl);
}
}
}
}
IStyleSheetList styleSheets = this.StyleSheets;
if (styleSheets != null && styleSheets.Count != 0)
{
foreach (var styleSheet in styleSheets)
{
var cssSheet = styleSheet as CssStyleSheet;
if (cssSheet == null)
{
continue;
}
GetFontUrl(cssSheet, fontUrls);
}
}
GetFontUrl(this.UserAgentStyleSheet, fontUrls);
GetFontUrl(this.UserStyleSheet, fontUrls);
return(fontUrls);
}
/// <summary>
/// Sets the enabled style sheet sets in the list of style sheets.
/// </summary>
/// <param name="sheets">The list of style sheets.</param>
/// <param name="name">The name of the set to enabled.</param>
public static void EnableStyleSheetSet(this IStyleSheetList sheets, String name)
{
foreach (var sheet in sheets)
{
var title = sheet.Title;
if (!String.IsNullOrEmpty(title))
{
sheet.IsDisabled = title != name;
}
}
}
/// <summary>
/// Tries to find the matching namespace url for the given prefix.
/// </summary>
/// <param name="sheets">The list of style sheets.</param>
/// <param name="prefix">The prefix of the namespace to find.</param>
public static String?LocateNamespace(this IStyleSheetList sheets, String prefix)
{
var uri = default(String);
var length = sheets.Length;
for (var i = 0; i < length && uri is null; i++)
{
uri = sheets[i]?.LocateNamespace(prefix);
}
return(uri);
}
/// <summary>
/// Gets all possible style sheet sets from the list of style sheets.
/// </summary>
/// <param name="sheets">The list of style sheets.</param>
/// <returns>An enumeration over all sets.</returns>
public static IEnumerable <String> GetAllStyleSheetSets(this IStyleSheetList sheets)
{
var existing = new List <String>();
foreach (var sheet in sheets)
{
var title = sheet.Title;
if (String.IsNullOrEmpty(title) || existing.Contains(title))
{
continue;
}
existing.Add(title);
yield return(title);
}
}
/// <summary>
/// Gets the enabled style sheet sets from the list of style sheets.
/// </summary>
/// <param name="sheets">The list of style sheets.</param>
/// <returns>An enumeration over the enabled sets.</returns>
public static IEnumerable <String> GetEnabledStyleSheetSets(this IStyleSheetList sheets)
{
var excluded = new List <String>();
foreach (var sheet in sheets)
{
var title = sheet.Title;
if (String.IsNullOrEmpty(title) || excluded.Contains(title))
{
continue;
}
else if (sheet.IsDisabled)
{
excluded.Add(title);
}
}
return(sheets.GetAllStyleSheetSets().Except(excluded));
}
/// <summary>
/// Tries to find the matching namespace url for the given prefix.
/// </summary>
/// <param name="sheets">The list of style sheets.</param>
/// <param name="prefix">The prefix of the namespace to find.</param>
public static String LocateNamespace(this IStyleSheetList sheets, String prefix)
{
foreach (var sheet in sheets)
{
var css = sheet as CssStyleSheet;
if (sheet.IsDisabled || css == null)
{
continue;
}
foreach (var rule in css.Rules.OfType <CssNamespaceRule>())
{
if (rule.Prefix.Is(prefix))
{
return(rule.NamespaceUri);
}
}
}
return(null);
}
/// <summary>
/// Creates a new document node.
/// </summary>
/// <param name="context">The context of the document.</param>
/// <param name="source">The underlying source.</param>
internal Document(IBrowsingContext context, TextSource source)
: base(null, "#document", NodeType.Document)
{
_async = true;
_designMode = false;
_firedUnload = false;
_salvageable = true;
_shown = false;
_preferredStyleSheetSet = String.Empty;
_context = context ?? BrowsingContext.New();
_source = source;
_referrer = String.Empty;
_contentType = MimeTypes.ApplicationXml;
_ready = DocumentReadyState.Loading;
_sandbox = Sandboxes.None;
_quirksMode = QuirksMode.Off;
_tasks = new CancellableTasks();
_mutations = new MutationHost(Options);
_loadingScripts = new Queue<HtmlScriptElement>();
_location = new Location(AboutBlank);
_ranges = new List<WeakReference<Range>>();
_location.Changed += LocationChanged;
_styleSheets = this.CreateStyleSheets();
_view = this.CreateWindow();
_loader = this.CreateLoader();
}
