private static BreadcrumbNode GetTypeRootNode(Type rootType, BreadcrumbAttribute rootAttribute)
{
var rootNode = new BreadcrumbNode()
{
Type = rootType,
ParentType = rootAttribute.Parent,
Name = rootAttribute.Name ?? rootType.Name.Replace("Controller", string.Empty)
};
rootNode.Children = rootType.GetMethods()
.Select(x => (x, x.GetCustomAttribute <BreadcrumbAttribute>()))
.Where(x => x.Item2 != null)
.Select(x => new BreadcrumbNode()
{
Parent = rootNode, Name = x.Item2.Name ?? x.Item1.Name
})
.ToList();
if (rootNode.Children.Count == 0)
{
rootNode.Children.Add(new BreadcrumbNode()
{
Parent = rootNode, Name = "Index"
});
}
return(rootNode);
}
public static List <BreadcrumbNode> GetPath(BreadcrumbNode tree, string controller, string action)
{
var targetNode = FindNode(tree, controller, action);
var path = new List <BreadcrumbNode>();
while (targetNode != null)
{
path.Add(targetNode);
targetNode = targetNode.Parent;
}
return(path);
}
private static BreadcrumbNode FindNode(BreadcrumbNode node, string controller, string action)
{
if (node.Name.Equals(action, StringComparison.OrdinalIgnoreCase) &&
node.Parent != null &&
node.Parent.Name.Equals(controller, StringComparison.OrdinalIgnoreCase))
{
return(node);
}
if (node.Children != null)
{
foreach (var child in node.Children)
{
var targetNode = FindNode(child, controller, action);
if (targetNode != null)
{
return(targetNode);
}
}
}
return(null);
}