/// <summary></summary>
public BreadcrumbProvider(string configPath)
{
var doc = XDocument.Load(configPath);
_nodeList = new List <BreadcrumbNode>();
_root = mappingToNode(doc.Root);
}
private int GetNestingLevel(BreadcrumbNode node)
{
var level = 1;
while (node.Parent != null)
{
node = node.Parent;
level++;
}
return(level);
}
private void BuildBreadcrumbs(string virtualPath, Nav nav)
{
string action = RouteData.Values["action"].ToString();
string controller = RouteData.Values["controller"].ToString();
string requestPath = virtualPath?.Trim(Separator.Path);
BreadcrumbNode breadcrumbNode = null;
if (!string.IsNullOrWhiteSpace(requestPath))
{
Stack <string> virtualNamesForScan = new Stack <string>(requestPath.Split(Separator.Path).Reverse());
BreadcrumbNode ScanNavItem(string virtualNameForScan, IEnumerable <NavItem> navItems, BreadcrumbNode parent = null)
{
if (!string.IsNullOrWhiteSpace(virtualNameForScan) &&
navItems.Count() > 0)
{
NavItem navItem = navItems.FirstOrDefault(x => x.VirtualPath.Equals(virtualNameForScan, StringComparison.OrdinalIgnoreCase));
if (navItem != null)
{
BreadcrumbNode node = new BreadcrumbNode(navItem.DisplayName, "Page", "Pages", new { navItem.VirtualPath }, parent);
if (virtualNamesForScan.Count > 0 && navItem.Children.Count() > 0)
{
return(ScanNavItem(virtualNameForScan + Separator.Path + virtualNamesForScan.Pop(), navItem.Children, node));
}
else
{
return(node);
}
}
}
return(parent);
}
breadcrumbNode = ScanNavItem(virtualNamesForScan.Pop(), nav.Items);
}
else
{
if (nav.Items.Count() > 0)
{
NavItem navItem = nav.Items.First();
breadcrumbNode = new BreadcrumbNode(navItem.DisplayName, "Page", "Pages", new { navItem.VirtualPath });
}
}
if (breadcrumbNode != null)
{
ViewData["BreadcrumbNode"] = breadcrumbNode;
}
}
private BreadcrumbNode mappingToNode(XElement el, BreadcrumbNode parent = null)
{
var node = new BreadcrumbNode
{
Name = attr(el, "name"),
Url = attr(el, "url"),
Icon = attr(el, "icon"),
Pattern = attr(el, "pattern"),
Parent = parent,
};
node.ChildNodes = el.Elements("node").Select(x => mappingToNode(x, node)).ToList();
_nodeList.Add(node);
return(node);
}
public static void AppendToBreadcrumb(this HttpContext httpContext, BreadcrumbNode node)
{
var nodes = (List <BreadcrumbNode>)httpContext.Items[BreadcrumbKey];
if (nodes == null)
{
nodes = new List <BreadcrumbNode>()
{
new BreadcrumbNode()
{
DisplayText = LocalizationHelper.Localize("Home", ApplicationEngine.CurrentLanguageCultureCode),
Url = ApplicationEngine.RouteUrl(RouteNames.Home, absoluteUrl: true)
}
};
httpContext.Items[BreadcrumbKey] = nodes;
}
nodes.Add(node);
}
static Breadcrumb()
{
_tree = BreadcrumbCollector.Collect(Assembly.GetExecutingAssembly());
}
