public static ShellNavigationState GetNavigationState(ShellItem shellItem, ShellSection shellSection, ShellContent shellContent, IReadOnlyList <Page> sectionStack, IReadOnlyList <Page> modalStack)
{
List <string> routeStack = new List <string>();
bool stackAtRoot = sectionStack == null || sectionStack.Count <= 1;
bool hasUserDefinedRoute =
(Routing.IsUserDefined(shellItem)) ||
(Routing.IsUserDefined(shellSection)) ||
(Routing.IsUserDefined(shellContent));
if (shellItem != null)
{
var shellItemRoute = shellItem.Route;
routeStack.Add(shellItemRoute);
if (shellSection != null)
{
var shellSectionRoute = shellSection.Route;
routeStack.Add(shellSectionRoute);
if (shellContent != null)
{
var shellContentRoute = shellContent.Route;
routeStack.Add(shellContentRoute);
}
if (!stackAtRoot)
{
for (int i = 1; i < sectionStack.Count; i++)
{
var page = sectionStack[i];
routeStack.AddRange(ShellUriHandler.CollapsePath(Routing.GetRoute(page), routeStack, hasUserDefinedRoute));
}
}
if (modalStack != null && modalStack.Count > 0)
{
for (int i = 0; i < modalStack.Count; i++)
{
var topPage = modalStack[i];
routeStack.AddRange(ShellUriHandler.CollapsePath(Routing.GetRoute(topPage), routeStack, hasUserDefinedRoute));
for (int j = 1; j < topPage.Navigation.NavigationStack.Count; j++)
{
routeStack.AddRange(ShellUriHandler.CollapsePath(Routing.GetRoute(topPage.Navigation.NavigationStack[j]), routeStack, hasUserDefinedRoute));
}
}
}
}
}
if (routeStack.Count > 0)
{
routeStack.Insert(0, "/");
}
return(new ShellNavigationState(String.Join("/", routeStack), true));
}
public bool AddMatch(ShellUriHandler.NodeLocation nodeLocation)
{
if (Item == null && !AddNode(nodeLocation.Item, NextSegment))
{
return(false);
}
if (Section == null && !AddNode(nodeLocation.Section, NextSegment))
{
return(false);
}
if (Content == null && !AddNode(nodeLocation.Content, NextSegment))
{
return(false);
}
return(true);
bool AddNode(BaseShellItem baseShellItem, string nextSegment)
{
_ = baseShellItem ?? throw new ArgumentNullException(nameof(baseShellItem));
if (Routing.IsUserDefined(baseShellItem.Route) && baseShellItem.Route != nextSegment)
{
return(false);
}
AddMatch(baseShellItem.Route, GetUserSegment(baseShellItem), baseShellItem);
return(true);
}
string GetUserSegment(BaseShellItem baseShellItem)
{
if (Routing.IsUserDefined(baseShellItem))
{
return(baseShellItem.Route);
}
return(String.Empty);
}
}
public void AddMatch(string shellSegment, string userSegment, object node)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
switch (node)
{
case ShellUriHandler.GlobalRouteItem globalRoute:
if (globalRoute.IsFinished)
{
_globalRouteMatches.Add(globalRoute.SourceRoute);
}
break;
case Shell shell:
if (shell == Shell)
{
return;
}
Shell = shell;
break;
case ShellItem item:
if (Item == item)
{
return;
}
Item = item;
break;
case ShellSection section:
if (Section == section)
{
return;
}
Section = section;
if (Item == null)
{
Item = Section.Parent as ShellItem;
_fullSegments.Add(Item.Route);
}
break;
case ShellContent content:
if (Content == content)
{
return;
}
Content = content;
if (Section == null)
{
Section = Content.Parent as ShellSection;
_fullSegments.Add(Section.Route);
}
if (Item == null)
{
Item = Section.Parent as ShellItem;
_fullSegments.Insert(0, Item.Route);
}
break;
}
if (Item?.Parent is Shell s)
{
Shell = s;
}
// if shellSegment == userSegment it means the implicit route is part of the request
if (Routing.IsUserDefined(shellSegment) || shellSegment == userSegment || shellSegment == NextSegment)
{
_matchedSegments.Add(shellSegment);
}
_fullSegments.Add(shellSegment);
}