public static NavigationRouteBuilder AddChildRoute <T>(this NavigationRouteBuilder builder, string DisplayText, Expression <Func <T, ActionResult> > action, NavigationRouteOptions options = null) where T : IController
{
var childRoute = new NamedRoute("", "", new MvcRouteHandler());
childRoute.DisplayName = DisplayText;
childRoute.IsChild = true;
childRoute.Options = options ?? new NavigationRouteOptions();
childRoute.ToDefaultAction <T>(action, childRoute.Options);
builder._parent.Children.Add(childRoute);
builder._routes.Add(childRoute.Name, childRoute);
return(builder);
}
public static NamedRoute ToDefaultAction <T>(this NamedRoute route, Expression <Func <T, ActionResult> > action, NavigationRouteOptions options) where T : IController
{
var body = action.Body as MethodCallExpression;
if (body == null)
{
throw new ArgumentException("Expression must be a method call");
}
if (body.Object != action.Parameters[0])
{
throw new ArgumentException("Method call must target lambda argument");
}
string actionName = body.Method.Name;
// check for ActionName attribute
var attributes = body.Method.GetCustomAttributes(typeof(ActionNameAttribute), false);
if (attributes.Length > 0)
{
var actionNameAttr = (ActionNameAttribute)attributes[0];
actionName = actionNameAttr.Name;
}
string controllerName = typeof(T).Name;
if (controllerName.EndsWith("Controller", StringComparison.OrdinalIgnoreCase))
{
controllerName = controllerName.Remove(controllerName.Length - 10, 10);
}
;
route.Defaults = LinkBuilder.BuildParameterValuesFromExpression(body) ?? new RouteValueDictionary();
foreach (var pair in route.Defaults.Where(x => x.Value == null).ToList())
{
route.Defaults.Remove(pair.Key);
}
route.Defaults.Add("controller", controllerName);
route.Defaults.Add("action", actionName);
var areaName = options.AreaName;
route.Url = CreateUrl(actionName, controllerName, areaName);
//TODO: Add area to route name
if (areaName == "")
{
route.Name = "Navigation-" + controllerName + "-" + actionName;
}
else
{
route.Name = "Navigation-" + areaName + "-" + controllerName + "-" + actionName;
}
if (route.DataTokens == null)
{
route.DataTokens = new RouteValueDictionary();
}
route.DataTokens.Add("Namespaces", new string[] { typeof(T).Namespace });
if (!string.IsNullOrEmpty(areaName))
{
route.DataTokens.Add("area", areaName.ToLower());
}
if (!string.IsNullOrEmpty(options.FilterToken))
{
route.DataTokens.Add(Defaults.FILTER_TOKEN_KEY, options.FilterToken.ToLower());
}
return(route);
}
public static NavigationRouteBuilder MapNavigationRoute <T>(this RouteCollection routes, string displayName, Expression <Func <T, ActionResult> > action, string navigationGroup = "", NavigationRouteOptions options = null) where T : IController
{
var newRoute = new NamedRoute("", "", new MvcRouteHandler());
newRoute.DisplayName = displayName;
newRoute.NavigationGroup = navigationGroup;
newRoute.Options = options ?? new NavigationRouteOptions();
newRoute.ToDefaultAction(action, newRoute.Options);
routes.Add(newRoute.Name, newRoute);
return(new NavigationRouteBuilder(routes, newRoute));
}
