Implement about window.

Aaru.Gui/Aaru.Gui.csproj

@@ -19,6 +19,7 @@
         <NrtShowRevision>true</NrtShowRevision>
     </PropertyGroup>
     <ItemGroup>
+        <PackageReference Include="Avalonia.Controls.DataGrid" Version="0.9.7" />
         <PackageReference Include="Claunia.Encoding" Version="1.7.0" />
         <PackageReference Include="Eto.Forms" Version="2.5.0" />
         <PackageReference Include="Eto.Serialization.Xaml" Version="2.5.0" />

Aaru.Gui/App.xaml

@@ -1,21 +1,17 @@
-<Application xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:gui="clr-namespace:Aaru.Gui"
-             x:Class="Aaru.Gui.App">
+<Application xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:gui="clr-namespace:Aaru.Gui" x:Class="Aaru.Gui.App">
     <Application.DataTemplates>
-        <gui:ViewLocator/>
+        <gui:ViewLocator />
     </Application.DataTemplates>
-
     <Application.Styles>
-        <StyleInclude Source="avares://Avalonia.Themes.Default/DefaultTheme.xaml"/>
-        <StyleInclude Source="avares://Avalonia.Themes.Default/Accents/BaseLight.xaml"/>
+        <StyleInclude Source="avares://Avalonia.Themes.Default/DefaultTheme.xaml" />
+        <StyleInclude Source="avares://Avalonia.Themes.Default/Accents/BaseLight.xaml" />
+        <StyleInclude Source="avares://Avalonia.Controls.DataGrid/Themes/Default.xaml" />
     </Application.Styles>
-
     <NativeMenu.Menu>
         <NativeMenu>
-            <NativeMenuItem Header="_About"/>
-            <NativeMenuItem Header="_Preferences"/>
-            <NativeMenuItem Header="_Quit"/>
+            <NativeMenuItem Header="_About" Clicked="OnAboutClicked" /> <NativeMenuItem Header="_Preferences" />
+            <NativeMenuItem Header="_Quit" />
         </NativeMenu>
     </NativeMenu.Menu>
-</Application>
+</Application>

Aaru.Gui/App.xaml.cs

@@ -40,15 +40,22 @@ namespace Aaru.Gui
             desktop.MainWindow.Close();
 
             // Create and show main window
-            desktop.MainWindow = new MainWindow
-            {
-                DataContext = new MainWindowViewModel()
-            };
-
+            desktop.MainWindow             = new MainWindow();
+            desktop.MainWindow.DataContext = new MainWindowViewModel(desktop.MainWindow as MainWindow);
             desktop.MainWindow.Show();
 
             // Now can close when all windows are closed
             desktop.ShutdownMode = ShutdownMode.OnLastWindowClose;
         }
+
+        void OnAboutClicked(object sender, EventArgs args)
+        {
+            if(!(ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) ||
+               !(desktop.MainWindow is MainWindow mainWindow)                            ||
+               !(mainWindow.DataContext is MainWindowViewModel mainWindowViewModel))
+                return;
+
+            mainWindowViewModel.ExecuteAboutCommand();
+        }
     }
 }

Aaru.Gui/Models/AssemblyModel.cs

@@ -0,0 +1,8 @@
+namespace Aaru.Gui.Models
+{
+    public class AssemblyModel
+    {
+        public string Name    { get; set; }
+        public string Version { get; set; }
+    }
+}

Aaru.Gui/ViewModels/AboutDialogViewModel.cs

@@ -0,0 +1,129 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+using System.Linq;
+using System.Reactive;
+using System.Reflection;
+using System.Threading.Tasks;
+using Aaru.Gui.Models;
+using Aaru.Gui.Views;
+using Microsoft.DotNet.PlatformAbstractions;
+using ReactiveUI;
+
+namespace Aaru.Gui.ViewModels
+{
+    public class AboutDialogViewModel : ViewModelBase
+    {
+        readonly AboutDialog _view;
+        string               _versionText;
+
+        public AboutDialogViewModel(AboutDialog view)
+        {
+            _view = view;
+
+            VersionText =
+                (Attribute.GetCustomAttribute(typeof(App).Assembly, typeof(AssemblyInformationalVersionAttribute)) as
+                     AssemblyInformationalVersionAttribute)?.InformationalVersion;
+
+            WebsiteCommand = ReactiveCommand.Create(ExecuteWebsiteCommand);
+            LicenseCommand = ReactiveCommand.Create(ExecuteLicenseCommand);
+            CloseCommand   = ReactiveCommand.Create(ExecuteCloseCommand);
+
+            Assemblies = new ObservableCollection<AssemblyModel>();
+
+            Task.Run(() =>
+            {
+                foreach(Assembly assembly in AppDomain.CurrentDomain.GetAssemblies().OrderBy(a => a.FullName))
+                {
+                    string? name = assembly.GetName().Name;
+
+                    string version =
+                        (Attribute.GetCustomAttribute(assembly, typeof(AssemblyInformationalVersionAttribute)) as
+                             AssemblyInformationalVersionAttribute)?.InformationalVersion;
+
+                    if(name is null ||
+                       version is null)
+                        continue;
+
+                    Assemblies.Add(new AssemblyModel
+                    {
+                        Name = name, Version = version
+                    });
+                }
+            });
+        }
+
+        public string AboutLabel            => "About";
+        public string LibrariesLabel        => "Libraries";
+        public string AuthorsLabel          => "Authors";
+        public string Title                 => "About Aaru";
+        public string SoftwareName          => "Aaru";
+        public string SuiteName             => "Aaru Data Preservation Suite";
+        public string Copyright             => "© 2011-2020 Natalia Portillo";
+        public string Website               => "https://aaru.app";
+        public string License               => "License: GNU General Public License Version 3";
+        public string CloseLabel            => "Close";
+        public string AssembliesLibraryText => "Library";
+        public string AssembliesVersionText => "Version";
+        public string Authors => @"Developers:
+    Natalia Portillo
+    Michael Drüing
+
+Testers:
+    Silas Laspada
+
+Public relations:
+    Noah Bacon";
+        public ReactiveCommand<Unit, Unit>         WebsiteCommand { get; }
+        public ReactiveCommand<Unit, Unit>         LicenseCommand { get; }
+        public ReactiveCommand<Unit, Unit>         CloseCommand   { get; }
+        public ObservableCollection<AssemblyModel> Assemblies     { get; }
+
+        public string VersionText
+        {
+            get => _versionText;
+            set => this.RaiseAndSetIfChanged(ref _versionText, value);
+        }
+
+        void ExecuteWebsiteCommand()
+        {
+            var process = new Process
+            {
+                StartInfo =
+                {
+                    UseShellExecute = false, CreateNoWindow = true, Arguments = "https://aaru.app"
+                }
+            };
+
+            switch(RuntimeEnvironment.OperatingSystemPlatform)
+            {
+                case Platform.Unknown: return;
+                case Platform.Windows:
+                    process.StartInfo.FileName  = "cmd";
+                    process.StartInfo.Arguments = $"/c start {process.StartInfo.Arguments.Replace("&", "^&")}";
+
+                    break;
+                case Platform.FreeBSD:
+                case Platform.Linux:
+                    process.StartInfo.FileName = "xdg-open";
+
+                    break;
+                case Platform.Darwin:
+                    process.StartInfo.FileName = "open";
+
+                    break;
+                default:
+                    if(Debugger.IsAttached)
+                        throw new ArgumentOutOfRangeException();
+
+                    return;
+            }
+
+            process.Start();
+        }
+
+        void ExecuteLicenseCommand() => throw new NotImplementedException();
+
+        void ExecuteCloseCommand() => _view.Close();
+    }
+}

Aaru.Gui/ViewModels/MainWindowViewModel.cs

@@ -1,15 +1,35 @@
-using System;
+using System.Reactive;
+using Aaru.Gui.Views;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
+using ReactiveUI;
 
 namespace Aaru.Gui.ViewModels
 {
     public class MainWindowViewModel : ViewModelBase
     {
+        readonly MainWindow _view;
+
+        public MainWindowViewModel(MainWindow view)
+        {
+            AboutCommand = ReactiveCommand.Create(ExecuteAboutCommand);
+            _view        = view;
+        }
+
         public string Greeting => "Welcome to Aaru!";
 
-        public bool NativeMenuNotSupported => !NativeMenu.GetIsNativeMenuExported((Application.Current.ApplicationLifetime as
-                                                                                       IClassicDesktopStyleApplicationLifetime)?.MainWindow);
+        public bool NativeMenuNotSupported =>
+            !NativeMenu.GetIsNativeMenuExported((Application.Current.ApplicationLifetime as
+                                                     IClassicDesktopStyleApplicationLifetime)?.MainWindow);
+
+        public ReactiveCommand<Unit, Unit> AboutCommand { get; }
+
+        internal void ExecuteAboutCommand()
+        {
+            var dialog = new AboutDialog();
+            dialog.DataContext = new AboutDialogViewModel(dialog);
+            dialog.ShowDialog(_view);
+        }
     }
 }

Aaru.Gui/Views/AboutDialog.xaml

@@ -0,0 +1,84 @@
+<Window xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="clr-namespace:Aaru.Gui.ViewModels;assembly=Aaru.Gui"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignWidth="800"
+        d:DesignHeight="450" Width="480" Height="320" x:Class="Aaru.Gui.Views.AboutDialog"
+        Icon="/Assets/avalonia-logo.ico" CanResize="False" Title="{Binding Title}">
+    <Design.DataContext>
+        <vm:AboutDialogViewModel />
+    </Design.DataContext>
+    <Border Padding="15">
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> <RowDefinition Height="Auto" />
+            </Grid.RowDefinitions>
+            <Grid Grid.Row="0">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" />
+                </Grid.ColumnDefinitions>
+                <Border Grid.Column="0" BorderThickness="5">
+                    <Image Source="/Assets/avalonia-logo.ico" Width="48" Height="48" />
+                </Border>
+                <Grid Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
+                    </Grid.RowDefinitions>
+                    <TextBlock Grid.Row="0" Text="{Binding SoftwareName}" HorizontalAlignment="Left"
+                               VerticalAlignment="Center" FontSize="16" FontWeight="Bold" />
+                    <TextBlock Grid.Row="1" Text="{Binding VersionText}" HorizontalAlignment="Left"
+                               VerticalAlignment="Center" />
+                </Grid>
+            </Grid>
+            <TabControl Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
+                <TabItem>
+                    <TabItem.Header>
+                        <TextBlock Text="{Binding AboutLabel}" />
+                    </TabItem.Header>
+                    <Grid>
+                        <Grid.RowDefinitions>
+                            <RowDefinition Height="Auto" /> <RowDefinition Height="12" />
+                            <RowDefinition Height="Auto" /> <RowDefinition Height="12" />
+                            <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
+                            <RowDefinition Height="*" />
+                        </Grid.RowDefinitions>
+                        <TextBlock Grid.Row="0" Text="{Binding SuiteName}" />
+                        <TextBlock Grid.Row="2" Text="{Binding Copyright}" />
+                        <Button Grid.Row="4" BorderThickness="0" Background="Transparent" HorizontalAlignment="Left"
+                                VerticalAlignment="Center" Padding="0" Command="{Binding WebsiteCommand}">
+                            <!-- TODO: TextDecorations="Underline" in next Avalonia UI version -->
+                            <TextBlock Text="{Binding Website}" Foreground="Blue" />
+                        </Button>
+                        <Button Grid.Row="5" BorderThickness="0" Background="Transparent" HorizontalAlignment="Left"
+                                VerticalAlignment="Center" Padding="0" Command="{Binding LicenseCommand}">
+                            <!-- TODO: TextDecorations="Underline" in next Avalonia UI version -->
+                            <TextBlock Text="{Binding License}" Foreground="Blue" />
+                        </Button>
+                    </Grid>
+                </TabItem>
+                <TabItem>
+                    <TabItem.Header>
+                        <TextBlock Text="{Binding LibrariesLabel}" />
+                    </TabItem.Header>
+                    <DataGrid Items="{Binding Assemblies}" HorizontalScrollBarVisibility="Visible">
+                        <DataGrid.Columns>
+                            <DataGridTextColumn Header="Library" Binding="{Binding Name}" Width="Auto"
+                                                IsReadOnly="True" />
+                            <DataGridTextColumn Header="Version" Binding="{Binding Version}" Width="Auto"
+                                                IsReadOnly="True" />
+                        </DataGrid.Columns>
+                    </DataGrid>
+                </TabItem>
+                <TabItem>
+                    <TabItem.Header>
+                        <TextBlock Text="{Binding AuthorsLabel}" />
+                    </TabItem.Header>
+                    <TextBox IsReadOnly="True" Text="{Binding Authors}" />
+                </TabItem>
+            </TabControl>
+            <Button Grid.Row="2" HorizontalAlignment="Right" VerticalAlignment="Center"
+                    Command="{Binding CloseCommand}">
+                <TextBlock Text="{Binding CloseLabel}" />
+            </Button>
+        </Grid>
+    </Border>
+</Window>

Aaru.Gui/Views/AboutDialog.xaml.cs

@@ -0,0 +1,19 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Aaru.Gui.Views
+{
+    public class AboutDialog : Window
+    {
+        public AboutDialog()
+        {
+            InitializeComponent();
+        #if DEBUG
+            this.AttachDevTools();
+        #endif
+        }
+
+        void InitializeComponent() => AvaloniaXamlLoader.Load(this);
+    }
+}

Aaru.Gui/Views/MainWindow.xaml

@@ -1,41 +1,31 @@
-<Window xmlns="https://github.com/avaloniaui"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+<Window xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:vm="clr-namespace:Aaru.Gui.ViewModels;assembly=Aaru.Gui"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-        x:Class="Aaru.Gui.Views.MainWindow"
-        Icon="/Assets/avalonia-logo.ico"
-        Title="Aaru.Gui">
-
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignWidth="800"
+        d:DesignHeight="450" x:Class="Aaru.Gui.Views.MainWindow" Icon="/Assets/avalonia-logo.ico" Title="Aaru.Gui">
     <Design.DataContext>
-        <vm:MainWindowViewModel/>
+        <vm:MainWindowViewModel />
     </Design.DataContext>
-
     <DockPanel>
         <Menu DockPanel.Dock="Top">
             <MenuItem Header="_File">
-                <MenuItem Header="_Open"/>
-                <Separator/>
-                <MenuItem Header="_Settings" IsVisible="{Binding NativeMenuNotSupported}"/>
-                <Separator/>
-                <MenuItem Header="E_xit" IsVisible="{Binding NativeMenuNotSupported}"/>
+                <MenuItem Header="_Open" /> <Separator />
+                <MenuItem Header="_Settings" IsVisible="{Binding NativeMenuNotSupported}" /> <Separator />
+                <MenuItem Header="E_xit" IsVisible="{Binding NativeMenuNotSupported}" />
             </MenuItem>
             <MenuItem Header="_Devices">
-                <MenuItem Header="_Refresh"/>
+                <MenuItem Header="_Refresh" />
             </MenuItem>
             <MenuItem Header="_Window">
-                <MenuItem Header="_Console"/>
+                <MenuItem Header="_Console" />
             </MenuItem>
             <MenuItem Header="_Help">
-                <MenuItem Header="_Encodings"/>
-                <MenuItem Header="_Plugins"/>
-                <MenuItem Header="_Statistics"/>
-                <Separator IsVisible="{Binding NativeMenuNotSupported}"/>
-                <MenuItem Header="_About" Name="AboutMenuItem" IsVisible="{Binding NativeMenuNotSupported}"/>
+                <MenuItem Header="_Encodings" /> <MenuItem Header="_Plugins" /> <MenuItem Header="_Statistics" />
+                <Separator IsVisible="{Binding NativeMenuNotSupported}" />
+                <MenuItem Header="_About" Name="AboutMenuItem" IsVisible="{Binding NativeMenuNotSupported}"
+                          Command="{Binding AboutCommand}" />
             </MenuItem>
         </Menu>
-        <TextBlock Text="{Binding Greeting}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+        <TextBlock Text="{Binding Greeting}" HorizontalAlignment="Center" VerticalAlignment="Center" />
     </DockPanel>
-
-</Window>
+</Window>