private static void FakeModel(ViewContentHelper content, ContentRegistration re)
{
if (content.Html.ViewContext.ViewData.Model == null)
{
var modelType = content.Html.GetType().GetGenericArguments()[0];
object model;
if (modelType.IsAssignableFrom(re.ContentType) && !re.ContentType.IsAbstract)
{
model = Activator.CreateInstance(re.ContentType);
}
else if (typeof(ContentItem).IsAssignableFrom(modelType) && !modelType.IsAbstract)
{
model = Activator.CreateInstance(modelType);
}
else if (modelType.IsGenericType && typeof(IEnumerable <>).IsAssignableFrom(modelType.GetGenericTypeDefinition()))
{
model = Array.CreateInstance(modelType.GetGenericTypeDefinition().MakeArrayType(), 0);
}
else
{
return;
}
content.Html.ViewContext.ViewData.Model = content.Html.ViewData.Model = model;
}
}
public static ContentRegistration Define(this ViewContentHelper content, Action <ContentRegistration> registration)
{
var re = RegistrationExtensions.GetRegistrationExpression(content.Html);
if (re != null)
{
FakeModel(content, re);
re.Context.GlobalSortOffset = 0;
if (content.Html.GetType().IsGenericType)
{
var contentType = content.Html.GetType().GetGenericArguments().First();
if (typeof(ContentItem).IsAssignableFrom(contentType) && re.ContentType == null)
{
re.ContentType = contentType;
re.Title = contentType.Name;
}
}
re.IsDefined = true;
if (registration != null)
{
registration(re);
}
}
return(re);
}
public static ContentRegistration PrependDefinition(this ViewContentHelper content, Action <ContentRegistration> registration = null)
{
var re = RegistrationExtensions.GetRegistrationExpression(content.Html);
if (re != null)
{
re.Context.GlobalSortOffset = -1000;
registration(re);
}
return(re);
}
// content helper
public static ViewContentHelper Content(this HtmlHelper html)
{
string key = "ContentHelperOf" + html.GetHashCode();
var content = html.ViewContext.ViewData[key] as ViewContentHelper;
if (content == null)
{
html.ViewContext.ViewData[key] = content = new ViewContentHelper(html);
}
return(content);
}
public static ContentRegistration PrependDefinition(this ViewContentHelper content)
{
return(content.PrependDefinition(null));
}
public static ContentRegistration Define(this ViewContentHelper content)
{
return(content.Define(null));
}
