/// <summary>
/// Build the ng string for the div data element
/// </summary>
/// <param name="ng"></param>
/// <returns></returns>
private static string BuildNg2Div(Nanogallery ng)
{
var start = $"{{ ";
var end = $"}}";
var body = $"";
foreach (var prop in ng.GetType().GetProperties())
{
var val = prop.GetValue(ng, null);
if (prop.GetCustomAttributes(typeof(RenderAttribute), false).Length > 0 && val != null)
{
if (IsSpecialProperty(prop))
{
body += RenderSpecial(val, prop.Name);
}
else if (val.GetType() == typeof(bool))
{
// bools are uppercase first late strings, so for JS convert to lower case string
body += $"\"{GetDescription(prop)}\": \"{val.ToString().ToLower()}\",";
}
else if (val.GetType() == typeof(int))
{
body += $"\"{GetDescription(prop)}\": {val},";
}
else
{
if (Int32.TryParse((string)val, out var num))
{
body += $"\"{GetDescription(prop)}\": {val},";
}
else
{
body += $"\"{GetDescription(prop)}\": \"{val}\",";
}
}
}
}
var str = (start + body.Substring(0, body.Length - 1) + end);
return(str);
}
/// <summary>
/// Render a nanogallery from a list of images
/// </summary>
/// <param name="htmlHelper"></param>
/// <param name="list"></param>
/// <param name="ng"></param>
/// <param name="albumId"></param>
/// <returns></returns>
public static IHtmlString Nanogallery(this HtmlHelper htmlHelper, IEnumerable list, Nanogallery ng = null, string albumId = null)
{
var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext);
var div = new TagBuilder("div");
div.Attributes.Add("data-nanogallery2", BuildNg2Div(ng ?? new Nanogallery()));
div.Attributes.Add("id", "nanogallery" + $"-{albumId}");
var refs = BuildListGallery(urlHelper, list);
foreach (var aref in refs)
{
div.InnerHtml += aref.ToString(TagRenderMode.Normal);
}
var writer = new HelperResult(x =>
{
// it's encoded here, so need to decode...
x.Write(div.ToString().Replace("'", "\'"));
});
return(writer);
}
