public IEnumerable <MvcSiteMapNode> GetBreadcrumb(ViewContext context)
{
String area = context.RouteData.Values["area"] as String;
String action = context.RouteData.Values["action"] as String;
String controller = context.RouteData.Values["controller"] as String;
MvcSiteMapNode current = AllNodes.SingleOrDefault(node =>
String.Equals(node.Area, area, StringComparison.OrdinalIgnoreCase) &&
String.Equals(node.Action, action, StringComparison.OrdinalIgnoreCase) &&
String.Equals(node.Controller, controller, StringComparison.OrdinalIgnoreCase));
List <MvcSiteMapNode> breadcrumb = new List <MvcSiteMapNode>();
while (current != null)
{
breadcrumb.Insert(0, new MvcSiteMapNode
{
IconClass = current.IconClass,
Controller = current.Controller,
Action = current.Action,
Area = current.Area
});
current = current.Parent;
}
return(breadcrumb);
}
private IEnumerable <MvcSiteMapNode> CopyAndSetState(IEnumerable <MvcSiteMapNode> nodes, String area, String controller, String action)
{
List <MvcSiteMapNode> copies = new List <MvcSiteMapNode>();
foreach (MvcSiteMapNode node in nodes)
{
MvcSiteMapNode copy = new MvcSiteMapNode();
copy.IconClass = node.IconClass;
copy.IsMenu = node.IsMenu;
copy.Controller = node.Controller;
copy.Action = node.Action;
copy.Area = node.Area;
copy.Children = CopyAndSetState(node.Children, area, controller, action);
copy.HasActiveChildren = copy.Children.Any(child => child.IsActive || child.HasActiveChildren);
copy.IsActive =
copy.Children.Any(child => child.IsActive && !child.IsMenu) ||
(
String.Equals(node.Area, area, StringComparison.OrdinalIgnoreCase) &&
String.Equals(node.Action, action, StringComparison.OrdinalIgnoreCase) &&
String.Equals(node.Controller, controller, StringComparison.OrdinalIgnoreCase)
);
copies.Add(copy);
}
return(copies);
}
private IEnumerable <MvcSiteMapNode> GetNodes(XElement siteMap, MvcSiteMapNode parent)
{
List <MvcSiteMapNode> nodes = new List <MvcSiteMapNode>();
foreach (XElement element in siteMap.Elements("siteMapNode"))
{
MvcSiteMapNode node = new MvcSiteMapNode();
node.IsMenu = (Boolean?)element.Attribute("menu") == true;
node.Controller = (String)element.Attribute("controller");
node.IconClass = (String)element.Attribute("icon");
node.Action = (String)element.Attribute("action");
node.Area = (String)element.Attribute("area");
node.Children = GetNodes(element, node);
node.Parent = parent;
nodes.Add(node);
}
return(nodes);
}
private Boolean IsEmpty(MvcSiteMapNode node)
{
return(node.Action == null && !node.Children.Any());
}
