Working on PPC.

1 files changed, 18 insertions, 0 deletions

diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/INavigationManager.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/INavigationManager.cs
index 249a917de..94a2e8d35 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/INavigationManager.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/Navigation/INavigationManager.cs
@@ -12,9 +12,17 @@ namespace Tango.PPC.Common.Navigation
     /// </summary>
     public interface INavigationManager
     {
+        /// <summary>
+        /// Gets the current module.
+        /// </summary>
         IPPCModule CurrentModule { get; }
 
         /// <summary>
+        /// Gets the current view model.
+        /// </summary>
+        PPCViewModel CurrentVM { get; }
+
+        /// <summary>
         /// Gets a value indicating whether the navigation system is able to navigate to the previous view.
         /// </summary>
         bool CanNavigateBack { get; }
@@ -86,5 +94,15 @@ namespace Tango.PPC.Common.Navigation
         /// <returns></returns>
         Task<bool> NavigateWithObject<TModule, TView, TPass>(TPass obj, bool pushToHistory = true)
                where TModule : IPPCModule;
+
+        /// <summary>
+        /// Clears the navigation back history.
+        /// </summary>
+        void ClearHistory();
+
+        /// <summary>
+        /// Clears the navigation back history except the specified view type.
+        /// </summary>
+        void ClearHistoryExcept<T>();
     }
 }