.gitignore

@@ -2,3 +2,12 @@
 /PcgsInvUi/[Oo]bj/
 [Oo]bj/
 [Bb]in/
+ALL_BUILD.vcxproj
+ALL_BUILD.vcxproj.filters
+ZERO_CHECK.vcxproj
+ZERO_CHECK.vcxproj.filters
+CMakeCache.txt
+CMakeFiles/
+.idea/
+cmake_install.cmake
+coin_collection

CMakeLists.txt

@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.25)
+
+project("PcgsInvUi" CSharp)
+
+add_subdirectory(PcgsInvUi)

PcgsInvUi/CMakeLists.txt

@@ -0,0 +1,47 @@
+cmake_minimum_required(VERSION 3.25)
+
+project(PcgsInvUi LANGUAGES CSharp)
+
+include(CSharpUtilities)
+
+add_executable(PcgsInvUi
+  App.axaml.cs
+  Program.cs
+  ViewLocator.cs
+  App.axaml
+  app.manifest
+  Models/Coin.cs
+  Services/CoinCollection.cs
+  Services/CoinDatabase.cs
+  Services/PcgsClient.cs
+  ViewModels/CoinListViewModel.cs
+  ViewModels/DeleteWindowViewModel.cs
+  ViewModels/EditViewModel.cs
+  ViewModels/ErrorWindowViewModel.cs
+  ViewModels/FindWindowViewModel.cs
+  ViewModels/MainWindowViewModel.cs
+  ViewModels/NewViewModel.cs
+  ViewModels/ViewModelBase.cs
+  Views/DeleteWindow.axaml
+  Views/DeleteWindow.axaml.cs
+  Views/ErrorWindow.axaml
+  Views/ErrorWindow.axaml.cs
+  Views/FindWindow.axaml
+  Views/FindWindow.axaml.cs
+  Views/MainWindow.axaml
+  Views/MainWindow.axaml.cs
+  Views/NewView.axaml
+  Views/NewView.axaml.cs
+)
+
+# Set the .NET Framework version for the executable.
+set_property(TARGET PcgsInvUi PROPERTY VS_DOTNET_TARGET_FRAMEWORK_VERSION "v4.7.2")
+# Set the executable to be 64-bit.
+set_property(TARGET PcgsInvUi PROPERTY WIN64_EXECUTABLE TRUE)
+# Set the C# language version (defaults to 3.0)
+set(CMAKE_CSharp_FLAGS "/langversion:latest")
+
+# Add the .NET reference libraries as dependencies.
+set_property(TARGET PcgsInvUi PROPERTY VS_DOTNET_REFERENCES
+  "Microsoft.CSharp"
+)

PcgsInvUi/Services/CoinDatabase.cs

@@ -37,14 +37,16 @@ public class CoinDatabase {
 
     private SQLiteConnection CreateConnection() {
         // Check if database exists.
-        if (!System.IO.File.Exists("%USERPROFILE%\\coin_collection")) {
+        if (!System.IO.File.Exists("coin_collection")) {
             // Create the database.
-            SQLiteConnection.CreateFile("%USERPROFILE%\\coin_collection");
+            Console.Write("Creating database... ");
+            SQLiteConnection.CreateFile("coin_collection");
+            Console.WriteLine("Done.");
         }
         
         // Create a connection to the database.
         SQLiteConnection connection =
-            new SQLiteConnection("DataSource=%USERPROFILE%\\coin_collection");
+            new SQLiteConnection("DataSource=coin_collection");
         
         // Open the connection.
         try {

PcgsInvUi/ViewModels/DeleteWindowViewModel.cs

@@ -1,15 +1,14 @@
 using System.Reactive;
-using PcgsInvUi.Views;
 using ReactiveUI;
 
 namespace PcgsInvUi.ViewModels;
 
 public class DeleteWindowViewModel : ViewModelBase {
     public ReactiveCommand<Unit, object> OkCommand { get; }
-    public ReactiveCommand<DeleteWindow, Unit> CancelCommand { get; }
+    public ReactiveCommand<Unit, object> CancelCommand { get; }
 
     public DeleteWindowViewModel() {
         OkCommand = ReactiveCommand.Create(() => (object)true);
-        CancelCommand = ReactiveCommand.Create<DeleteWindow>(window => window.Close());
+        CancelCommand = ReactiveCommand.Create(() => (object)false);
     }
-}
+}

PcgsInvUi/ViewModels/EditViewModel.cs

@@ -1,5 +1,4 @@
-using System;
+using System.Reactive;
-using System.Reactive;
 using PcgsInvUi.Models;
 using ReactiveUI;
 
@@ -25,4 +24,4 @@ public class EditViewModel : ViewModelBase {
         // Setup OkCommand - all Coin-related properties must be non-whitespace.
         OkCommand = ReactiveCommand.Create(() => { });
     }
-}
+}

PcgsInvUi/ViewModels/ErrorWindowViewModel.cs

@@ -1,6 +1,4 @@
 using System.Reactive;
-using System.Security.Principal;
-using PcgsInvUi.Views;
 using ReactiveUI;
 
 namespace PcgsInvUi.ViewModels; 
@@ -11,16 +9,15 @@ public class ErrorWindowViewModel : ViewModelBase {
         get => _message;
         set => this.RaiseAndSetIfChanged(ref _message, value);
     }
-
     private string _message;
 
-    public ReactiveCommand<ErrorWindow, Unit> CloseCommand { get; }
+    public ReactiveCommand<Unit, object> CloseCommand { get; }
     
     public ErrorWindowViewModel(string message)
     {
-        DisplayedMessage = message;
+        _message = message;
 
-        CloseCommand = ReactiveCommand.Create<ErrorWindow>(window => window.Close());
+        CloseCommand = ReactiveCommand.Create(() => (object)false);
     }
 
-}
+}

PcgsInvUi/ViewModels/MainWindowViewModel.cs

@@ -10,6 +10,7 @@ using ReactiveUI;
 
 namespace PcgsInvUi.ViewModels;
 
+// TODO Create proper sums for total value.
 // TODO Error handling for API calls.
 // TODO Manual handling of API key.
 // TODO Use CoinFacts link.
@@ -41,7 +42,7 @@ public class MainWindowViewModel : ViewModelBase {
     public Interaction<DeleteWindowViewModel, Boolean> ShowDeleteWindow { get; }
     public ReactiveCommand<Unit, Unit> ExportCommand { get; }
     public Interaction<Unit, Uri> ShowExportWindow { get; }
-    public Interaction<ErrorWindowViewModel, Unit> ShowErrorWindow { get; }
+    public Interaction<ErrorWindowViewModel, bool> ShowErrorWindow { get; }
 
     private ViewModelBase _sideContent;
     private Coin? _selectedCoin;
@@ -56,7 +57,7 @@ public class MainWindowViewModel : ViewModelBase {
         TotalValue = DisplayedList.Sum(x => x.TotalPrice);
         
         // Set up the ability to show the error window.
-        ShowErrorWindow = new Interaction<ErrorWindowViewModel, Unit>();
+        ShowErrorWindow = new Interaction<ErrorWindowViewModel, bool>();
         
         // Set up the ability to open the delete window.
         ShowDeleteWindow = new Interaction<DeleteWindowViewModel, bool>();
@@ -67,7 +68,7 @@ public class MainWindowViewModel : ViewModelBase {
             var result = await ShowDeleteWindow.Handle(deleteViewModel);
             if (result && SelectedCoin is not null) {
                 ConnectedCoinDatabase.DeleteCoin(SelectedCoin);
-                ConnectedCoinDatabase.Collection.Remove(SelectedCoin); // possible null deref - ignored due to button being disabled.
+                ConnectedCoinDatabase.Collection.Remove(SelectedCoin);
             }
         }, deleteEnabled);
 
@@ -83,10 +84,10 @@ public class MainWindowViewModel : ViewModelBase {
             catch (IOException e) {
                 // Something is wrong with the file after it's been created.
                 Console.WriteLine(e.Message);
-                ShowErrorWindow.Handle(new ErrorWindowViewModel(e.Message));
+                await ShowErrorWindow.Handle(new ErrorWindowViewModel(e.Message));
             } catch (Exception e) {
                 Console.WriteLine(e.Message);
-                ShowErrorWindow.Handle(new ErrorWindowViewModel(e.Message));
+                await ShowErrorWindow.Handle(new ErrorWindowViewModel(e.Message));
             }
         });
         
@@ -114,10 +115,15 @@ public class MainWindowViewModel : ViewModelBase {
                 
                 // TODO Clear the text boxes.
             });
-
+        
-        // Change TotalValue anytime SelectedCoin.TotalPrice changes.
+        // Update TotalValue anytime a coin's quantity changes.
-        // Possible null deref - how do you remove this?
+        // Possible null reference is currently ignored - SelectedCoin will never be null.
         this.WhenAnyValue(x => x.SelectedCoin.TotalPrice)
             .Subscribe(_ => TotalValue = ConnectedCoinDatabase.Collection.Sum(x => x.TotalPrice));
+
+        // Update TotalValue anytime a coin is added or removed.
+        ConnectedCoinDatabase.Collection.CollectionChanged += (sender, args) => {
+            TotalValue = ConnectedCoinDatabase.Collection.Sum(x => x.TotalPrice);
+        };
     }
-}
+}

PcgsInvUi/Views/DeleteWindow.axaml

@@ -18,7 +18,7 @@
         <Button Grid.Row="1" Grid.Column="1" Margin="5"
                 Width="100"
                 HorizontalAlignment="Stretch" VerticalAlignment="Center"
-                HorizontalContentAlignment="Center" IsEnabled="False"
+                HorizontalContentAlignment="Center" IsEnabled="True"
-                Content="Use X button" Command="{Binding CancelCommand}" />
+                Content="No" Command="{Binding CancelCommand}" />
     </Grid>
-</Window>
+</Window>

PcgsInvUi/Views/DeleteWindow.axaml.cs

@@ -9,5 +9,6 @@ public partial class DeleteWindow : ReactiveWindow<DeleteWindowViewModel> {
     public DeleteWindow() {
         InitializeComponent();
         this.WhenActivated(d => d(ViewModel!.OkCommand.Subscribe(Close)));
+        this.WhenActivated(d => d(ViewModel!.CancelCommand.Subscribe(Close)));
     }
-}
+}

PcgsInvUi/Views/ErrorWindow.axaml

@@ -12,8 +12,7 @@
                Margin="15"
                Content="{Binding DisplayedMessage}" />
         <Button Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Bottom"
-                Margin="10" Name="CloseButton" IsEnabled="False"
+                Margin="10" Name="CloseButton" IsEnabled="True"
-                Content="Use X button" Command="{Binding CloseCommand, Mode=OneWay}" 
+                Content="OK" Command="{Binding CloseCommand, Mode=OneWay}" />
-                CommandParameter="{Binding ElementName=NameErrorWindow}"/>
     </Grid>
 </Window>

PcgsInvUi/Views/ErrorWindow.axaml.cs

@@ -1,5 +1,7 @@
+using System;
 using Avalonia.ReactiveUI;
 using PcgsInvUi.ViewModels;
+using ReactiveUI;
 
 namespace PcgsInvUi.Views; 
 
@@ -7,5 +9,6 @@ public partial class ErrorWindow : ReactiveWindow<ErrorWindowViewModel> {
     public ErrorWindow()
     {
         InitializeComponent();
+        this.WhenActivated(d => d(ViewModel!.CloseCommand.Subscribe(Close)));
     }
-}
+}

PcgsInvUi/Views/MainWindow.axaml

@@ -5,8 +5,7 @@
         xmlns:viewModels="clr-namespace:PcgsInvUi.ViewModels"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         x:Class="PcgsInvUi.Views.MainWindow" x:DataType="viewModels:MainWindowViewModel"
-        Title="Main Window"
+        Title="Main Window" WindowStartupLocation="CenterScreen" WindowState="Maximized" >
-        WindowStartupLocation="CenterOwner">
     <SplitView IsPaneOpen="True"
                DisplayMode="Inline"
                PanePlacement="Right">
@@ -49,7 +48,7 @@
                                         Binding="{Binding Designation}"
                                         IsReadOnly="True" />
                     <DataGridTextColumn Header="Est. Price" Width="*"
-                                        Binding="{Binding PriceGuideValue}"
+                                        Binding="{Binding PriceGuideValue, StringFormat='${0:0.00}'}"
                                         IsReadOnly="True" />
                     <DataGridTextColumn Header="PCGS #" Width="*"
                                         Binding="{Binding PCGSNo}"
@@ -78,4 +77,4 @@
             </DockPanel>
         </Grid>
     </SplitView>
-</Window>
+</Window>

PcgsInvUi/Views/MainWindow.axaml.cs

@@ -18,7 +18,7 @@ public partial class MainWindow : ReactiveWindow<MainWindowViewModel> {
         // this.WhenActivated(d => d(ViewModel!.ShowFindWindow.RegisterHandler(ShowFindWindowAsync)));
     }
 
-    private async Task ShowDeleteWindowAsync(InteractionContext<DeleteWindowViewModel, Boolean> interaction) {
+    private async Task ShowDeleteWindowAsync(InteractionContext<DeleteWindowViewModel, bool> interaction) {
         var window = new DeleteWindow();
         window.DataContext = interaction.Input;
 
@@ -53,11 +53,11 @@ public partial class MainWindow : ReactiveWindow<MainWindowViewModel> {
         }
     }
     
-    private async Task ShowErrorWindowAsync(InteractionContext<ErrorWindowViewModel, Unit> interaction) {
+    private async Task ShowErrorWindowAsync(InteractionContext<ErrorWindowViewModel, bool> interaction) {
         var window = new ErrorWindow();
         window.DataContext = interaction.Input;
 
-        await window.ShowDialog(this);
+        var result = await window.ShowDialog<bool>(this);
-        interaction.SetOutput(Unit.Default);
+        interaction.SetOutput(result);
     }
-}
+}