Add return type to UsersManager methods

Akari.Provider.WaveshareUART.csproj

@@ -98,6 +98,7 @@
     <Compile Include="Views\FingerprintDialog.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Views\ManageUsersDisplay.cs" />
     <Compile Include="Views\SettingsDisplay.cs" />
     <Compile Include="Views\SleepDisplay.cs" />
     <Compile Include="Views\TUIManager.cs" />

Users/User.cs

@@ -19,7 +19,7 @@ namespace Akari.Provider.WaveshareUART.Users
         [YamlIgnore()]
         public int Count => Position - Start;
         [YamlIgnore()]
-        public IEnumerable<int> ValidPositions => Enumerable.Range(Start, Count);
+        public IEnumerable<ushort> ValidPositions => Enumerable.Range(Start, Count).Cast<ushort>();
 
         public User()
         {

Users/UsersManager.cs

@@ -67,22 +67,25 @@ namespace Akari.Provider.WaveshareUART.Users
             Save();
         }
 
-        public void Remove(User user)
+        public bool Remove(User user)
+        {
+            if (_users.Remove(user))
             {
-            _users.Remove(user);
-
-            // TODO Remove fingerprints
-
                 Save();
+
+                return true;
             }
 
-        public void Clear()
+            return false;
+        }
+
+        public bool Clear()
         {
             _users.Clear();
 
-            // TODO Remove fingerprints
-
             Save();
+
+            return true;
         }
 
         private void Save()

Views/ManageUsersDisplay.cs

@@ -0,0 +1,112 @@
+using Akari.Provider.WaveshareUART.Users;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Terminal.Gui;
+using WaveshareUARTFingerprintSensor;
+
+namespace Akari.Provider.WaveshareUART.Views
+{
+    public class ManageUsersDisplay : Toplevel
+    {
+        public UsersManager UsersManager => WaveshareUARTProvider.Instance.UsersManager;
+
+        private ListView _listView;
+
+        public ManageUsersDisplay()
+        {
+            Init();
+        }
+
+        private void Init()
+        {
+            Modal = true;
+
+            ColorScheme = Colors.Error;
+
+            // Creates the top-level window to show
+            var win = new Window("Manage Users")
+            {
+                X = 0,
+                Y = 0,
+
+                // By using Dim.Fill(), it will automatically resize without manual intervention
+                Width = Dim.Fill(),
+                Height = Dim.Fill()
+            };
+
+            win.ColorScheme = Colors.ColorSchemes["Dialog"];
+
+            Add(win);
+
+            // Window Content
+            _listView = new ListView()
+            {
+                X = 2,
+                Y = 1,
+                Height = Dim.Fill() - 1,
+                Width = Dim.Fill(),
+                AllowsMarking = true
+            };
+            _listView.OpenSelectedItem += ListView_OpenSelectedItem;
+
+            _listView.SetSource(UsersManager.Users.ToList());
+
+            var addButton = new Button("_Add")
+            {
+                X = Pos.Right(this) - 54,
+                Y = Pos.Bottom(this) - 3
+            };
+            addButton.Clicked += AddButton_Clicked;
+
+            var deleteButton = new Button("_Delete Selected")
+            {
+                X = Pos.Right(addButton) + 1,
+                Y = Pos.Top(addButton)
+            };
+            deleteButton.Clicked += DeleteButton_Clicked;
+
+            var deleteAllButton = new Button("Delete All")
+            {
+                X = Pos.Right(deleteButton) + 1,
+                Y = Pos.Top(deleteButton)
+            };
+            deleteAllButton.Clicked += DeleteAllButton_Clicked;
+
+            var quitButton = new Button("_Quit")
+            {
+                X = Pos.Right(deleteAllButton) + 1,
+                Y = Pos.Top(deleteAllButton)
+            };
+            quitButton.Clicked += () => { Application.RequestStop(); };
+
+            win.Add(_listView, addButton, deleteButton, deleteAllButton, quitButton);
+        }
+
+        private void ListView_OpenSelectedItem(ListViewItemEventArgs item)
+        {
+
+        }
+
+        private void AddButton_Clicked()
+        {
+
+        }
+
+        private void DeleteButton_Clicked()
+        {
+            var marked = UsersManager.Users.Where((item, index) => _listView.Source.IsMarked(index));
+
+            MessageBox.Query("Selected", string.Join(", ", marked), "Ok");
+        }
+
+        private void DeleteAllButton_Clicked()
+        {
+
+        }
+    }
+}

Views/TUIManager.cs

@@ -81,21 +81,14 @@ namespace Akari.Provider.WaveshareUART.Views
             var manageUsersButton = new Button("_Manage Users")
             {
                 X = Pos.Center(),
-                Y = Pos.Center() - 3
+                Y = Pos.Center() - 1
             };
             manageUsersButton.Clicked += ManageUsersButton_Clicked;
 
-            var addUserButton = new Button("_Add User")
-            {
-                X = Pos.Center(),
-                Y = Pos.Bottom(manageUsersButton) + 1
-            };
-            addUserButton.Clicked += AddUserButton_Clicked;
-
             var setComparisonLevelButton = new Button("Set Comparison _Level")
             {
                 X = Pos.Center(),
-                Y = Pos.Bottom(addUserButton) + 1
+                Y = Pos.Bottom(manageUsersButton) + 1
             };
             setComparisonLevelButton.Clicked += SetComparisonLevelButton_Clicked;
 
@@ -111,7 +104,6 @@ namespace Akari.Provider.WaveshareUART.Views
                 _comparisonLevelLabel,
                 _userCountLabel,
                 manageUsersButton,
-                addUserButton,
                 setComparisonLevelButton,
                 quitButton
             );
@@ -215,28 +207,7 @@ namespace Akari.Provider.WaveshareUART.Views
 
         private void ManageUsersButton_Clicked()
         {
-            var dialog = new FingerprintDialog("Read Fingerprint", "Can't read fingerprint, try to place your finger flat on the sensor");
+            Application.Run(new ManageUsersDisplay());
-
-            (ushort userID, UserPermission permission) userInfo = default;
-
-            Task.Run(() =>
-            {
-                if (FingerprintSensor.TryComparison1N(out userInfo))
-                {
-                    dialog.Cancel();
-                }
-                else
-                {
-                    dialog.CancelAndShowError();
-                }
-            });
-
-            dialog.Show();
-
-            if (userInfo != default)
-            {
-                MessageBox.Query("Read Fingerprint", $"Successfully read fingerprint\n\nUser ID: {userInfo.userID}\nPermissions: {userInfo.permission}\n ", "Ok");
-            }
         }
 
         private void ChangeConfig()