public static IHtmlString ExternalResources(this HtmlHelper htmlHelper, string areaName, string name, RouteValueDictionary htmlAttributes, string baseUri)
{
ReferenceElement settings = GetSettings(areaName, name);
// get distinct show if / hide if conditions and group into files
IDictionary <Condition, IList <FileInfoElement> > conditions = new Dictionary <Condition, IList <FileInfoElement> >(new ConditionComparer());
foreach (FileInfoElement fileInfo in settings.Files)
{
Condition condition = new Condition {
If = fileInfo.If
};
if (conditions.ContainsKey(condition))
{
conditions[condition].Add(fileInfo);
}
else
{
conditions.Add(condition, new List <FileInfoElement> {
fileInfo
});
}
}
string attributes = CreateAttributeList(htmlAttributes);
switch (settings.MimeType)
{
case "text/x-javascript":
case "text/javascript":
case "text/ecmascript":
{
ReferenceFomatter formatter = (filename, mimeType, attribs) => string.Format("<script src=\"{0}\" type=\"{1}\"{2}></script>", filename, settings.MimeType, attribs);
return(OutputReferences(htmlHelper.ViewContext, conditions, settings, attributes, formatter, areaName, baseUri));
}
case "text/css":
{
ReferenceFomatter formatter = (filename, mimeType, attribs) => string.Format("<link rel=\"Stylesheet\" href=\"{0}\" type=\"{1}\"{2} />", filename, settings.MimeType, attribs);
return(OutputReferences(htmlHelper.ViewContext, conditions, settings, attributes, formatter, areaName, baseUri));
}
// TODO: Decide any other reference types that we want to handle e.g. images
default:
{
return(new HtmlString(string.Empty));
}
}
}
private static IHtmlString OutputReferences(ViewContext viewContext, IDictionary <Condition, IList <FileInfoElement> > conditions, ReferenceElement settings, string attributes, ReferenceFomatter formatter, string areaName, string baseUrl)
{
var section = ConfigurationManager.GetSection(areaName);
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair <Condition, IList <FileInfoElement> > keyValuePair in conditions)
{
Condition condition = keyValuePair.Key;
IList <FileInfoElement> files = keyValuePair.Value;
// we need to wrap these files in conditional comments if the condition is anything but Action = Show with empty if (i.e. show to everything)
bool conditionalCommentRequired = !string.IsNullOrEmpty(condition.If);
if (conditionalCommentRequired)
{
sb.AppendFormat("<!--[if {0}]>", condition.If);
sb.AppendLine();
}
switch (section.Mode)
{
case Mode.Release:
UrlHelper urlHelper = new UrlHelper(viewContext.RequestContext);
//VirtualPathData virtualPathData = RouteTable.Routes.GetVirtualPath(viewContext.RequestContext,
// new RouteValueDictionary(new
// {
// area = viewContext.RouteData.Values["area"],
// controller = "WebResource",
// action = "Index",
// name = settings.Name,
// version = section.Version,
// condition = condition.If
// }));
string url = urlHelper.Action("Index", new
{
area = areaName,
controller = "WebResource",
action = "Index",
name = settings.Name,
version = section.Version,
condition = condition.If
});
if (!string.IsNullOrEmpty(baseUrl))
{
url = Kooboo.Web.Url.UrlUtility.ToHttpAbsolute(baseUrl, url);
}
sb.AppendLine(formatter.Invoke(url, settings.MimeType, attributes));
break;
case Mode.Debug:
foreach (FileInfoElement fileInfo in files)
{
string fileUrl = VirtualPathUtility.ToAbsolute(fileInfo.Filename);
if (!string.IsNullOrEmpty(baseUrl))
{
fileUrl = Kooboo.Web.Url.UrlUtility.ToHttpAbsolute(baseUrl, fileUrl);
}
sb.AppendLine(formatter.Invoke(fileUrl, settings.MimeType, attributes));
}
break;
}
if (conditionalCommentRequired)
{
sb.AppendFormat("<![endif]-->");
sb.AppendLine();
}
}
return(new HtmlString(sb.ToString()));
}
