A lot of work !!!

1 files changed, 26 insertions, 1 deletions

diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCViewModel.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCViewModel.cs
index 5cf6d7817..19bc6cd67 100644
--- a/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCViewModel.cs
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/PPCViewModel.cs
@@ -159,6 +159,15 @@ namespace Tango.PPC.Common
         }
 
         /// <summary>
+        /// Called when the navigation system has navigated to this VM view.
+        /// </summary>
+        /// <param name="fromVM">The view model instance of the previous view model</param>
+        public virtual void OnNavigatedTo(PPCViewModel fromVM)
+        {
+            
+        }
+
+        /// <summary>
         /// Called when the navigation system has navigated from this VM view.
         /// </summary>
         public virtual void OnNavigatedFrom()
@@ -167,6 +176,22 @@ namespace Tango.PPC.Common
         }
 
         /// <summary>
+        /// Called before the navigation system has navigated to this VM view.
+        /// </summary>
+        public virtual void OnBeforeNavigatedTo()
+        {
+
+        }
+
+        /// <summary>
+        /// Called before the navigation system has navigated from this VM view.
+        /// </summary>
+        public virtual void OnBeforeNavigatedFrom()
+        {
+            IsVisible = false;
+        }
+
+        /// <summary>
         /// Raises the specified message using the default <see cref="TangoMessenger"/>.
         /// </summary>
         /// <typeparam name="T"></typeparam>
@@ -220,7 +245,7 @@ namespace Tango.PPC.Common
         /// </summary>
         public virtual void OnApplicationReady()
         {
-            
+
         }
     }