/// <summary>
///
/// </summary>
/// <param name="htmlContainer">the container of the html to handle load stylesheet for</param>
/// <param name="src">the source of the element to load the stylesheet by</param>
/// <param name="attributes">the attributes of the link element</param>
public static string LoadStylesheet(HtmlContainer htmlContainer, string src, Dictionary<string, string> attributes)
{
ArgChecker.AssertArgNotNull(htmlContainer, "htmlContainer");
try
{
var args = new HtmlStylesheetLoadEventArgs(src, attributes);
htmlContainer.RaiseHtmlStylesheetLoadEvent(args);
if(args.SetStyleSheet != null)
{
return args.SetStyleSheet;
}
else if(args.SetSrc != null)
{
return LoadStylesheet(htmlContainer, args.SetSrc);
}
else
{
return LoadStylesheet(htmlContainer, src);
}
}
catch (Exception ex)
{
htmlContainer.ReportError(HtmlRenderErrorType.CssParsing, "Exception in handling stylesheet source", ex);
return string.Empty;
}
}
/// <summary>
/// Raise the stylesheet load event with the given event args.
/// </summary>
/// <param name="args">the event args</param>
internal void RaiseHtmlStylesheetLoadEvent(HtmlStylesheetLoadEventArgs args)
{
try
{
if (StylesheetLoad != null)
{
StylesheetLoad(this, args);
}
}
catch (Exception ex)
{
ReportError(HtmlRenderErrorType.CssParsing, "Failed stylesheet load event", ex);
}
}
/// <summary>
/// Propagate the stylesheet load event from root container.
/// </summary>
private void OnStylesheetLoad(object sender, HtmlStylesheetLoadEventArgs e)
{
if (StylesheetLoad != null)
{
StylesheetLoad(this, e);
}
}
/// <summary>
/// Handle stylesheet resolve.
/// </summary>
private static void OnStylesheetLoad(object sender, HtmlStylesheetLoadEventArgs e)
{
var stylesheet = GetStylesheet(e.Src);
if(stylesheet != null)
e.SetStyleSheet = stylesheet;
}