public static IRuleAppender RegularContent(this IRuleAppender appender)
{
return(appender.Treat(e => e.Elements("i", "b", "u", "em", "strong", "acronym", "h1", "h2", "h3", "h4", "h5", "h6")
.As(AllowFlags | HtmlElementOptions.Text | HtmlElementOptions.UseTypography))
.Treat(e => e.Element("p").As(AllowFlags | HtmlElementOptions.AllowContent | HtmlElementOptions.UseTypography)
.Treat(a => a.Attribute("align").Validate("left", "right", "center")))
.Treat(e => e.Element("nobr").As(AllowFlags | HtmlElementOptions.Text | HtmlElementOptions.UseTypography))
.Treat(e => e.Element("ul").As(AllowFlags | HtmlElementOptions.Container)
.Treat(l => l.Element("li").As(HtmlElementOptions.Allowed | HtmlElementOptions.Text | HtmlElementOptions.UseTypography)))
.Treat(e => e.Elements("code", "pre").As(AllowFlags | HtmlElementOptions.Preformatted))
.Treat(e => e.Element("br").As(AllowFlags | HtmlElementOptions.SelfClosing))
.Treat(e => e.Elements("script", "iframe").As(HtmlElementOptions.Denied | HtmlElementOptions.Global)));
}
public static IRuleAppender Abstract(this IRuleAppender appender)
{
return(appender.Treat(e => e.Element("cut").As(AllowFlags | HtmlElementOptions.SelfClosing)
.Convert((context, element) => {
XmlElement link = element.OwnerDocument.CreateElement("a");
string url = context.Parameters.GetValue <string>("url", String.Empty);
link.SetAttribute("href", url);
link.AppendText(String.Format("{0} →",
element.GetAttribute("title").Define(s => !String.IsNullOrEmpty(s), "читать далее")
));
return link;
})));
}
public static IRuleAppender Links(this IRuleAppender appender)
{
return(appender.Treat(e => e.Element("a")
.As(AllowFlags | HtmlElementOptions.Text)
.Convert((context, element) => {
if (element.InnerText.StartsWith("http://", StringComparison.OrdinalIgnoreCase) &&
element.InnerText.Length > 30)
{
element.SetAttribute("title", element.InnerText);
element.InnerText = element.InnerText.Substring(0, 30) + "…";
}
return context.CrossDomainLink(element);
})
.Treat(a => a.Attribute("href").Validate("#url"))
.Treat(a => a.Attributes("rel", "target"))
.Treat(a => a.Attribute("title"))));
}
public static IRuleAppender Images(this IRuleAppender appender)
{
return(appender.Treat(e => e.Element("img")
.As(AllowFlags | HtmlElementOptions.SelfClosing)
.Convert((context, element) => {
if (element.HasAttribute("alt"))
{
element.SetAttribute("title", element.GetAttribute("alt"));
}
return element;
})
.Treat(a => a.Attribute("src").Validate("#url"))
.Treat(a => a.Attribute("width").Validate("#int"))
.Treat(a => a.Attribute("height").Validate("#int"))
.Treat(a => a.Attribute("title"))));
}
public static IRuleAppender Youtube(this IRuleAppender appender)
{
return(appender.Treat(e => e.Elements("object").As(InternalFlags | HtmlElementOptions.Container)
.Treat(p => p.Element("param").As(HtmlElementOptions.Allowed | HtmlElementOptions.SelfClosing)
.Treat(a => a.Attributes("name", "value").As(HtmlAttributeOptions.Allowed | HtmlAttributeOptions.Required))
)
.Treat(i => i.Element("embed").As(HtmlElementOptions.Allowed | HtmlElementOptions.SelfClosing))
.Treat(a => a.Attributes("classid", "name").As(HtmlAttributeOptions.Allowed))
.Treat(a => a.Attributes("width", "height").As(HtmlAttributeOptions.Allowed).Validate("#int")))
.Treat(e => e.Element("youtube").As(AllowFlags | HtmlElementOptions.SelfClosing)
.Convert((context, element) => {
string location = element.GetAttribute("src");
if (String.IsNullOrEmpty(location))
{
return null;
}
return context.FlashPlayer(element, location, 640, 360, "");
})));
}
