From bd22807420b4d70daece3c14c0d854d587dc168a Mon Sep 17 00:00:00 2001
From: A A <awesomeboom0@outlook.com>
Date: Mon, 8 Apr 2019 19:38:19 -0400
Subject: [PATCH] Fix to this issue: Clicking on the same element in the
 hamburger view should re-open that view, like the menu items do #437

---
 src/Calculator/Views/MainPage.xaml     |  1 +
 src/Calculator/Views/MainPage.xaml.cpp | 14 ++++++++++++++
 src/Calculator/Views/MainPage.xaml.h   |  2 ++
 3 files changed, 17 insertions(+)

diff --git a/src/Calculator/Views/MainPage.xaml b/src/Calculator/Views/MainPage.xaml
index 6136f42f..863d76ce 100644
--- a/src/Calculator/Views/MainPage.xaml
+++ b/src/Calculator/Views/MainPage.xaml
@@ -109,6 +109,7 @@
                              PaneOpened="OnNavPaneOpened"
                              PaneOpening="OnNavPaneOpening"
                              SelectionChanged="OnNavSelectionChanged"
+                             ItemInvoked="OnNavItemInvoked"
                              TabIndex="1"
                              UseSystemFocusVisuals="True">
             <muxc:NavigationView.PaneFooter>
diff --git a/src/Calculator/Views/MainPage.xaml.cpp b/src/Calculator/Views/MainPage.xaml.cpp
index 14c406a0..21d28a52 100644
--- a/src/Calculator/Views/MainPage.xaml.cpp
+++ b/src/Calculator/Views/MainPage.xaml.cpp
@@ -601,3 +601,17 @@ void MainPage::AnnounceCategoryName()
     NarratorAnnouncement^ announcement = CalculatorAnnouncement::GetCategoryNameChangedAnnouncement(categoryName);
     NarratorNotifier->Announce(announcement);
 }
+
+void MainPage::OnNavItemInvoked(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Microsoft::UI::Xaml::Controls::NavigationViewItemInvokedEventArgs^ e)
+{
+    auto item = dynamic_cast<MUXC::NavigationViewItem^>(e->InvokedItemContainer);
+    if (item != nullptr)
+    {
+        auto selectedItem = static_cast<NavCategory^>(item->DataContext);
+
+        if (selectedItem->Mode == Model->Mode)
+        {
+            NavView->IsPaneOpen = false;
+        }
+    }
+}
diff --git a/src/Calculator/Views/MainPage.xaml.h b/src/Calculator/Views/MainPage.xaml.h
index 96a5ff76..ba26160d 100644
--- a/src/Calculator/Views/MainPage.xaml.h
+++ b/src/Calculator/Views/MainPage.xaml.h
@@ -52,6 +52,8 @@ namespace CalculatorApp
         void OnNavPaneOpened(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Platform::Object^ args);
         void OnNavPaneClosed(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Platform::Object^ args);
         void OnNavSelectionChanged(_In_ Platform::Object^ sender, _In_ Microsoft::UI::Xaml::Controls::NavigationViewSelectionChangedEventArgs^ e);
+        void OnNavItemInvoked(_In_ Microsoft::UI::Xaml::Controls::NavigationView^ sender, _In_ Microsoft::UI::Xaml::Controls::NavigationViewItemInvokedEventArgs^ e);
+
 
         void OnAboutButtonClick(_In_ Platform::Object^ sender, _In_ Windows::UI::Xaml::Controls::ItemClickEventArgs^ e);
         void OnAboutFlyoutOpened(_In_ Platform::Object^ sender, _In_ Platform::Object^ e);