Improve About window

WatchOnlyBitcoinWallet/App.axaml

@@ -12,6 +12,9 @@
   </Application.Styles>
 
   <Application.DataTemplates>
+    <DataTemplate DataType="{x:Type vm:AboutViewModel}">
+      <views:AboutView/>
+    </DataTemplate>
     <DataTemplate DataType="{x:Type vm:SettingsViewModel}">
       <views:SettingsView/>
     </DataTemplate>

WatchOnlyBitcoinWallet/App.axaml.cs

@@ -6,6 +6,7 @@
 using Avalonia;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Markup.Xaml;
+using System.Diagnostics;
 using WatchOnlyBitcoinWallet.ViewModels;
 
 namespace WatchOnlyBitcoinWallet
@@ -21,10 +22,14 @@ public override void OnFrameworkInitializationCompleted()
         {
             if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
             {
+                MainWindowViewModel vm = new();
                 desktop.MainWindow = new MainWindow
                 {
-                    DataContext = new MainWindowViewModel()
+                    DataContext = vm
                 };
+
+                Debug.Assert(desktop.MainWindow.Clipboard is not null);
+                vm.Clipboard = desktop.MainWindow.Clipboard;
             }
 
             base.OnFrameworkInitializationCompleted();

WatchOnlyBitcoinWallet/MainWindow.axaml.cs

@@ -15,13 +15,6 @@ public MainWindow()
             InitializeComponent();
         }
 
-        private void About_Click(object sender, RoutedEventArgs e)
-        {
-            AboutWindow myWin = new AboutWindow();
-            //myWin.Owner = this;
-            //myWin.ShowDialog();
-        }
-
         private void Exit_Click(object sender, RoutedEventArgs e)
         {
             this.Close();

WatchOnlyBitcoinWallet/ViewModels/AboutViewModel.cs

@@ -0,0 +1,46 @@
+// WatchOnlyBitcoinWallet
+// Copyright (c) 2016 Coding Enthusiast
+// Distributed under the MIT software license, see the accompanying
+// file LICENCE or http://www.opensource.org/licenses/mit-license.php.
+
+using Avalonia.Input.Platform;
+using WatchOnlyBitcoinWallet.MVVM;
+
+namespace WatchOnlyBitcoinWallet.ViewModels
+{
+    public class AboutViewModel : ViewModelBase
+    {
+        /// <summary>
+        /// Make designer happy!
+        /// </summary>
+#pragma warning disable CS8625 // Cannot convert null literal to non-nullable reference type.
+        public AboutViewModel() : this("(Version 1.2.3)", null)
+#pragma warning restore CS8625 // Cannot convert null literal to non-nullable reference type.
+        {
+        }
+
+        public AboutViewModel(string ver, IClipboard clipboard)
+        {
+            VersionString = ver;
+            this.clipboard = clipboard;
+
+            CopyCommand = new BindableCommand<string>(Copy);
+        }
+
+
+        private readonly IClipboard clipboard;
+        public string VersionString { get; }
+        public string Address1 => "1Q9swRQuwhTtjZZ2yguFWk7m7pszknkWyk";
+        public string Address2 => "bc1q3n5t9gv40ayq68nwf0yth49dt5c799wpld376s";
+        public string DonateUri1 => $"bitcoin:{Address1}{Bip21Extras}";
+        public string DonateUri2 => $"bitcoin:{Address2}{Bip21Extras}";
+
+        private const string Bip21Extras = "?label=Coding-Enthusiast&message=Donation%20to%20WatchOnlyBitcoinWallet%20project";
+
+        public BindableCommand<string> CopyCommand { get; }
+        private void Copy(string s)
+        {
+            clipboard?.SetTextAsync(s);
+        }
+    }
+}

WatchOnlyBitcoinWallet/ViewModels/MainWindowViewModel.cs

@@ -127,8 +127,8 @@ public decimal BitcoinBalanceLC
         public BindableCommand OpenAboutCommand { get; private set; }
         private async void OpenAbout()
         {
-            //AboutViewModel vm = new($"({VersionString})", Clipboard);
-            //await WindowMan.ShowDialog(vm);
+            AboutViewModel vm = new($"({VersionString})", Clipboard);
+            await WindowMan.ShowDialog(vm);
         }
 
         public BindableCommand OpenSettingsCommand { get; private set; }

WatchOnlyBitcoinWallet/Views/AboutView.axaml

@@ -0,0 +1,73 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:vm="using:WatchOnlyBitcoinWallet.ViewModels"
+             mc:Ignorable="d"
+             x:Class="WatchOnlyBitcoinWallet.Views.AboutView"
+             Height="285" Width="300"
+             FontSize="14">
+
+  <Design.DataContext>
+    <vm:AboutViewModel/>
+  </Design.DataContext>
+
+  <Grid RowDefinitions="auto,auto,auto,auto,auto,auto,*">
+    <TextBlock Text="Watch Only Bitcoin Wallet" VerticalAlignment="Top"
+               FontFamily="Comic Sans MS" FontSize="22" FontWeight="Bold"
+               HorizontalAlignment="Center"
+               Margin="0,10,0,0"
+               Grid.Row="0"/>
+    <TextBlock Text="{Binding VersionString}"
+               FontFamily="Comic Sans MS" FontSize="18" FontWeight="Bold"
+               HorizontalAlignment="Center"
+               Grid.Row="1"/>
+    <TextBlock Text="by Coding Enthusiast"
+               FontFamily="Comic Sans MS" FontSize="16" FontWeight="Bold"
+               HorizontalAlignment="Center"
+               Grid.Row="2"/>
+    <TextBlock Text="Button icons by icons8.com"
+               FontFamily="Comic Sans MS" FontSize="12" FontWeight="Bold"
+               Margin="0,10,0,0"
+               HorizontalAlignment="Center"
+               Grid.Row="3"/>
+
+    <HyperlinkButton Content="Github Repository Link"
+                     NavigateUri="https://github.com/Coding-Enthusiast/Watch-Only-Bitcoin-Wallet"
+                     Margin="0,15,0,0"
+                     Grid.Row="4"/>
+
+    <HyperlinkButton Content="BitcoinTalk.org Announcement Link"
+                     NavigateUri="https://bitcointalk.org/index.php?topic=1616888.0"
+                     Grid.Row="5"/>
+
+    <Grid ColumnDefinitions="*,auto,auto" RowDefinitions="auto,auto" Grid.Row="6">
+      <TextBox Text="{Binding Address1}"
+               IsReadOnly="True"
+               FontSize="11"
+               Margin="3"
+               Grid.Column="0" Grid.Row="0"/>
+      <Button Content="Copy"
+              Command="{Binding CopyCommand}"
+              CommandParameter="{Binding Address1}"
+              Grid.Column="1" Grid.Row="0"/>
+      <HyperlinkButton Content="Donate"
+                       NavigateUri="{Binding DonateUri1}"
+                       Grid.Column="2" Grid.Row="0"/>
+
+      <TextBox Text="{Binding Address2}"
+               IsReadOnly="True"
+               FontSize="11"
+               Margin="3"
+               Grid.Column="0" Grid.Row="1"/>
+      <Button Content="Copy"
+              Command="{Binding CopyCommand}"
+              CommandParameter="{Binding Address2}"
+              Grid.Column="1" Grid.Row="1"/>
+      <HyperlinkButton Content="Donate"
+                       NavigateUri="{Binding DonateUri2}"
+                       Grid.Column="2" Grid.Row="1"/>
+    </Grid>
+
+  </Grid>
+</UserControl>

WatchOnlyBitcoinWallet/Views/AboutView.axaml.cs

@@ -0,0 +1,17 @@
+// WatchOnlyBitcoinWallet
+// Copyright (c) 2016 Coding Enthusiast
+// Distributed under the MIT software license, see the accompanying
+// file LICENCE or http://www.opensource.org/licenses/mit-license.php.
+
+using Avalonia.Controls;
+
+namespace WatchOnlyBitcoinWallet.Views
+{
+    public partial class AboutView : UserControl
+    {
+        public AboutView()
+        {
+            InitializeComponent();
+        }
+    }
+}