// Clones and populates route values into each NavItem
private void PopulateRouteValues(NavItem[] items)
{
foreach (var item in items)
{
var newRoutes = item.RouteValues != null
? new RouteValueDictionary(item.RouteValues)
: new RouteValueDictionary();
var routeValues = GetRouteValues();
if (routeValues.ContainsKey(item.Context) && routeValues[item.Context] != null)
{
foreach (var value in routeValues[item.Context])
{
newRoutes[value.Key] = value.Value;
}
}
item.RouteValues = newRoutes;
}
}
/// <summary>
/// Removes a previously added NavItem from the specified navigation context
/// </summary>
/// <param name="navContext">The context the NavItem belongs to</param>
/// <param name="item">The item to be removed</param>
/// <returns>true on exists/success</returns>
public bool RemoveNavItem(string navContext, NavItem item)
{
if (!_navItems.ContainsKey(navContext)) return false;
return _navItems[navContext].Remove(item);
}
// Filters out NavItems that require roles the current user does not have
private NavItem[] FilterByRoles(NavItem[] items)
{
string[] roles;
try { roles = Roles.GetRolesForUser(); }
catch { return items; }
var allowedItems = items.Where(i => MatchRolesCriteria(roles, i.Roles)).ToArray();
return allowedItems;
}
/// <summary>
/// Adds a NavItem to the specified navigation context
/// </summary>
/// <param name="navContext">The context this NavItem belongs to</param>
/// <param name="item">The NavItem to be added</param>
public void AddNavItem(string navContext, NavItem item)
{
if (!_navItems.ContainsKey(navContext)) _navItems.Add(navContext, new List<NavItem>());
_navItems[navContext].Add(item);
}