Ava GUI: Restructure `Ryujinx.Ava` (#4165)

* Restructure `Ryujinx.Ava`

* Stylistic consistency

* Update Ryujinx.Ava/UI/Controls/UserEditor.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Controls/UserEditor.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Controls/UserSelector.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Controls/SaveManager.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Controls/SaveManager.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Windows/SettingsWindow.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Helpers/EmbeddedWindow.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Helpers/EmbeddedWindow.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Helpers/EmbeddedWindow.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Helpers/EmbeddedWindow.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Windows/SettingsWindow.axaml.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/ViewModels/UserProfileViewModel.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/ViewModels/UserProfileViewModel.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Update Ryujinx.Ava/UI/Helpers/EmbeddedWindow.cs

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Fix redundancies

* Remove redunancies

* Add back elses

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

7 files changed, 778 insertions, 0 deletions

diff --git a/Ryujinx.Ava/UI/Applet/AvaHostUiHandler.cs b/Ryujinx.Ava/UI/Applet/AvaHostUiHandler.cs
new file mode 100644
index 00000000..a8e76275
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/AvaHostUiHandler.cs
@@ -0,0 +1,198 @@
+using Avalonia.Controls;
+using Avalonia.Threading;
+using FluentAvalonia.UI.Controls;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Controls;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Windows;
+using Ryujinx.HLE;
+using Ryujinx.HLE.HOS.Applets;
+using Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.ApplicationProxy.Types;
+using Ryujinx.HLE.Ui;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Ava.UI.Applet
+{
+    internal class AvaHostUiHandler : IHostUiHandler
+    {
+        private readonly MainWindow _parent;
+
+        public IHostUiTheme HostUiTheme { get; }
+
+        public AvaHostUiHandler(MainWindow parent)
+        {
+            _parent = parent;
+
+            HostUiTheme = new AvaloniaHostUiTheme(parent);
+        }
+
+        public bool DisplayMessageDialog(ControllerAppletUiArgs args)
+        {
+            string playerCount = args.PlayerCountMin == args.PlayerCountMax
+                ? args.PlayerCountMin.ToString()
+                : $"{args.PlayerCountMin}-{args.PlayerCountMax}";
+
+            string key = args.PlayerCountMin == args.PlayerCountMax ? "DialogControllerAppletMessage" : "DialogControllerAppletMessagePlayerRange";
+
+            string message = string.Format(LocaleManager.Instance[key],
+                                           playerCount,
+                                           args.SupportedStyles,
+                                           string.Join(", ", args.SupportedPlayers),
+                                           args.IsDocked ? LocaleManager.Instance["DialogControllerAppletDockModeSet"] : "");
+
+            return DisplayMessageDialog(LocaleManager.Instance["DialogControllerAppletTitle"], message);
+        }
+
+        public bool DisplayMessageDialog(string title, string message)
+        {
+            ManualResetEvent dialogCloseEvent = new(false);
+
+            bool okPressed = false;
+
+            Dispatcher.UIThread.InvokeAsync(async () =>
+            {
+                try
+                {
+                    ManualResetEvent deferEvent = new(false);
+
+                    bool opened = false;
+
+                    UserResult response = await ContentDialogHelper.ShowDeferredContentDialog(_parent,
+                       title,
+                       message,
+                       "",
+                       LocaleManager.Instance["DialogOpenSettingsWindowLabel"],
+                       "",
+                       LocaleManager.Instance["SettingsButtonClose"],
+                       (int)Symbol.Important,
+                       deferEvent,
+                       async (window) =>
+                       {
+                           if (opened)
+                           {
+                               return;
+                           }
+
+                           opened = true;
+
+                           _parent.SettingsWindow = new SettingsWindow(_parent.VirtualFileSystem, _parent.ContentManager);
+
+                           await _parent.SettingsWindow.ShowDialog(window);
+
+                           opened = false;
+                       });
+
+                    if (response == UserResult.Ok)
+                    {
+                        okPressed = true;
+                    }
+
+                    dialogCloseEvent.Set();
+                }
+                catch (Exception ex)
+                {
+                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance["DialogMessageDialogErrorExceptionMessage"], ex));
+
+                    dialogCloseEvent.Set();
+                }
+            });
+
+            dialogCloseEvent.WaitOne();
+
+            return okPressed;
+        }
+
+        public bool DisplayInputDialog(SoftwareKeyboardUiArgs args, out string userText)
+        {
+            ManualResetEvent dialogCloseEvent = new(false);
+
+            bool okPressed = false;
+            bool error = false;
+            string inputText = args.InitialText ?? "";
+
+            Dispatcher.UIThread.Post(async () =>
+            {
+                try
+                {
+                    var response = await SwkbdAppletDialog.ShowInputDialog(_parent, LocaleManager.Instance["SoftwareKeyboard"], args);
+
+                    if (response.Result == UserResult.Ok)
+                    {
+                        inputText = response.Input;
+                        okPressed = true;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    error = true;
+                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance["DialogSoftwareKeyboardErrorExceptionMessage"], ex));
+                }
+                finally
+                {
+                    dialogCloseEvent.Set();
+                }
+            });
+
+            dialogCloseEvent.WaitOne();
+
+            userText = error ? null : inputText;
+
+            return error || okPressed;
+        }
+
+        public void ExecuteProgram(Switch device, ProgramSpecifyKind kind, ulong value)
+        {
+            device.Configuration.UserChannelPersistence.ExecuteProgram(kind, value);
+            if (_parent.AppHost != null)
+            {
+                _parent.AppHost.Stop();
+            }
+        }
+
+        public bool DisplayErrorAppletDialog(string title, string message, string[] buttons)
+        {
+            ManualResetEvent dialogCloseEvent = new(false);
+
+            bool showDetails = false;
+
+            Dispatcher.UIThread.Post(async () =>
+            {
+                try
+                {
+                    ErrorAppletWindow msgDialog = new(_parent, buttons, message)
+                    {
+                        Title = title,
+                        WindowStartupLocation = WindowStartupLocation.CenterScreen,
+                        Width = 400
+                    };
+
+                    object response = await msgDialog.Run();
+
+                    if (response != null && buttons != null && buttons.Length > 1 && (int)response != buttons.Length - 1)
+                    {
+                        showDetails = true;
+                    }
+
+                    dialogCloseEvent.Set();
+
+                    msgDialog.Close();
+                }
+                catch (Exception ex)
+                {
+                    dialogCloseEvent.Set();
+                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance["DialogErrorAppletErrorExceptionMessage"], ex));
+                }
+            });
+
+            dialogCloseEvent.WaitOne();
+
+            return showDetails;
+        }
+
+        public IDynamicTextInputHandler CreateDynamicTextInputHandler()
+        {
+            return new AvaloniaDynamicTextInputHandler(_parent);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.Ava/UI/Applet/AvaloniaDynamicTextInputHandler.cs b/Ryujinx.Ava/UI/Applet/AvaloniaDynamicTextInputHandler.cs
new file mode 100644
index 00000000..314746e7
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/AvaloniaDynamicTextInputHandler.cs
@@ -0,0 +1,164 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Threading;
+using Ryujinx.Ava.Input;
+using Ryujinx.Ava.UI.Controls;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Windows;
+using Ryujinx.HLE.Ui;
+using System;
+using System.Threading;
+
+using HidKey = Ryujinx.Common.Configuration.Hid.Key;
+
+namespace Ryujinx.Ava.UI.Applet
+{
+    class AvaloniaDynamicTextInputHandler : IDynamicTextInputHandler
+    {
+        private MainWindow _parent;
+        private OffscreenTextBox _hiddenTextBox;
+        private bool _canProcessInput;
+        private IDisposable _textChangedSubscription;
+        private IDisposable _selectionStartChangedSubscription;
+        private IDisposable _selectionEndtextChangedSubscription;
+
+        public AvaloniaDynamicTextInputHandler(MainWindow parent)
+        {
+            _parent = parent;
+
+            (_parent.InputManager.KeyboardDriver as AvaloniaKeyboardDriver).KeyPressed += AvaloniaDynamicTextInputHandler_KeyPressed;
+            (_parent.InputManager.KeyboardDriver as AvaloniaKeyboardDriver).KeyRelease += AvaloniaDynamicTextInputHandler_KeyRelease;
+            (_parent.InputManager.KeyboardDriver as AvaloniaKeyboardDriver).TextInput += AvaloniaDynamicTextInputHandler_TextInput;
+
+            _hiddenTextBox = _parent.HiddenTextBox;
+
+            Dispatcher.UIThread.Post(() =>
+            {
+                _textChangedSubscription = _hiddenTextBox.GetObservable(TextBox.TextProperty).Subscribe(TextChanged);
+                _selectionStartChangedSubscription = _hiddenTextBox.GetObservable(TextBox.SelectionStartProperty).Subscribe(SelectionChanged);
+                _selectionEndtextChangedSubscription = _hiddenTextBox.GetObservable(TextBox.SelectionEndProperty).Subscribe(SelectionChanged);
+            });
+        }
+
+        private void TextChanged(string text)
+        {
+            TextChangedEvent?.Invoke(text ?? string.Empty, _hiddenTextBox.SelectionStart, _hiddenTextBox.SelectionEnd, true);
+        }
+
+        private void SelectionChanged(int selection)
+        {
+            if (_hiddenTextBox.SelectionEnd < _hiddenTextBox.SelectionStart)
+            {
+                _hiddenTextBox.SelectionStart = _hiddenTextBox.SelectionEnd;
+            }
+
+            TextChangedEvent?.Invoke(_hiddenTextBox.Text ?? string.Empty, _hiddenTextBox.SelectionStart, _hiddenTextBox.SelectionEnd, true);
+        }
+
+        private void AvaloniaDynamicTextInputHandler_TextInput(object sender, string text)
+        {
+            Dispatcher.UIThread.InvokeAsync(() =>
+            {
+                if (_canProcessInput)
+                {
+                    _hiddenTextBox.SendText(text);
+                }
+            });
+        }
+
+        private void AvaloniaDynamicTextInputHandler_KeyRelease(object sender, KeyEventArgs e)
+        {
+            var key = (HidKey)AvaloniaKeyboardMappingHelper.ToInputKey(e.Key);
+
+            if (!(KeyReleasedEvent?.Invoke(key)).GetValueOrDefault(true))
+            {
+                return;
+            }
+
+            e.RoutedEvent = _hiddenTextBox.GetKeyUpRoutedEvent();
+
+            Dispatcher.UIThread.InvokeAsync(() =>
+            {
+                if (_canProcessInput)
+                {
+                    _hiddenTextBox.SendKeyUpEvent(e);
+                }
+            });
+        }
+
+        private void AvaloniaDynamicTextInputHandler_KeyPressed(object sender, KeyEventArgs e)
+        {
+            var key = (HidKey)AvaloniaKeyboardMappingHelper.ToInputKey(e.Key);
+
+            if (!(KeyPressedEvent?.Invoke(key)).GetValueOrDefault(true))
+            {
+                return;
+            }
+
+            e.RoutedEvent = _hiddenTextBox.GetKeyUpRoutedEvent();
+
+            Dispatcher.UIThread.InvokeAsync(() =>
+            {
+                if (_canProcessInput)
+                {
+                    _hiddenTextBox.SendKeyDownEvent(e);
+                }
+            });
+        }
+
+        public bool TextProcessingEnabled
+        {
+            get
+            {
+                return Volatile.Read(ref _canProcessInput);
+            }
+            set
+            {
+                Volatile.Write(ref _canProcessInput, value);
+            }
+        }
+
+        public event DynamicTextChangedHandler TextChangedEvent;
+        public event KeyPressedHandler KeyPressedEvent;
+        public event KeyReleasedHandler KeyReleasedEvent;
+
+        public void Dispose()
+        {
+            (_parent.InputManager.KeyboardDriver as AvaloniaKeyboardDriver).KeyPressed -= AvaloniaDynamicTextInputHandler_KeyPressed;
+            (_parent.InputManager.KeyboardDriver as AvaloniaKeyboardDriver).KeyRelease -= AvaloniaDynamicTextInputHandler_KeyRelease;
+            (_parent.InputManager.KeyboardDriver as AvaloniaKeyboardDriver).TextInput -= AvaloniaDynamicTextInputHandler_TextInput;
+
+            _textChangedSubscription?.Dispose();
+            _selectionStartChangedSubscription?.Dispose();
+            _selectionEndtextChangedSubscription?.Dispose();
+
+            Dispatcher.UIThread.Post(() =>
+            {
+                _hiddenTextBox.Clear();
+                _parent.RendererControl.Focus();
+
+                _parent = null;
+            });
+        }
+
+        public void SetText(string text, int cursorBegin)
+        {
+            Dispatcher.UIThread.Post(() =>
+            {
+                _hiddenTextBox.Text = text;
+                _hiddenTextBox.CaretIndex = cursorBegin;
+            });
+        }
+
+        public void SetText(string text, int cursorBegin, int cursorEnd)
+        {
+            Dispatcher.UIThread.Post(() =>
+            {
+                _hiddenTextBox.Text = text;
+                _hiddenTextBox.SelectionStart = cursorBegin;
+                _hiddenTextBox.SelectionEnd = cursorEnd;
+            });
+        }
+    }
+}
diff --git a/Ryujinx.Ava/UI/Applet/AvaloniaHostUiTheme.cs b/Ryujinx.Ava/UI/Applet/AvaloniaHostUiTheme.cs
new file mode 100644
index 00000000..fe5e2721
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/AvaloniaHostUiTheme.cs
@@ -0,0 +1,43 @@
+using Avalonia.Media;
+using Ryujinx.Ava.UI.Windows;
+using Ryujinx.HLE.Ui;
+using System;
+
+namespace Ryujinx.Ava.UI.Applet
+{
+    class AvaloniaHostUiTheme : IHostUiTheme
+    {
+        public AvaloniaHostUiTheme(MainWindow parent)
+        {
+            FontFamily = OperatingSystem.IsWindows() && OperatingSystem.IsWindowsVersionAtLeast(10, 0, 22000, 0) ? "Segoe UI Variable" : parent.FontFamily.Name;
+            DefaultBackgroundColor = BrushToThemeColor(parent.Background);
+            DefaultForegroundColor = BrushToThemeColor(parent.Foreground);
+            DefaultBorderColor = BrushToThemeColor(parent.BorderBrush);
+            SelectionBackgroundColor = BrushToThemeColor(parent.SearchBox.SelectionBrush);
+            SelectionForegroundColor = BrushToThemeColor(parent.SearchBox.SelectionForegroundBrush);
+        }
+
+        public string FontFamily { get; }
+
+        public ThemeColor DefaultBackgroundColor { get; }
+        public ThemeColor DefaultForegroundColor { get; }
+        public ThemeColor DefaultBorderColor { get; }
+        public ThemeColor SelectionBackgroundColor { get; }
+        public ThemeColor SelectionForegroundColor { get; }
+
+        private ThemeColor BrushToThemeColor(IBrush brush)
+        {
+            if (brush is SolidColorBrush solidColor)
+            {
+                return new ThemeColor((float)solidColor.Color.A / 255,
+                    (float)solidColor.Color.R / 255,
+                    (float)solidColor.Color.G / 255,
+                    (float)solidColor.Color.B / 255);
+            }
+            else
+            {
+                return new ThemeColor();
+            }
+        }
+    }
+}
diff --git a/Ryujinx.Ava/UI/Applet/ErrorAppletWindow.axaml b/Ryujinx.Ava/UI/Applet/ErrorAppletWindow.axaml
new file mode 100644
index 00000000..211b4725
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/ErrorAppletWindow.axaml
@@ -0,0 +1,52 @@
+<Window
+    x:Class="Ryujinx.Ava.UI.Applet.ErrorAppletWindow"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:locale="clr-namespace:Ryujinx.Ava.Common.Locale"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    Title="{locale:Locale ErrorWindowTitle}"
+    Width="450"
+    Height="340"
+    CanResize="False"
+    SizeToContent="Height"
+    mc:Ignorable="d"
+    Focusable="True">
+    <Grid
+        Margin="20"
+        HorizontalAlignment="Stretch"
+        VerticalAlignment="Stretch">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition />
+        </Grid.ColumnDefinitions>
+        <Image
+            Grid.Row="1"
+            Grid.RowSpan="2"
+            Grid.Column="0"
+            Height="80"
+            MinWidth="50"
+            Margin="5,10,20,10"
+            Source="resm:Ryujinx.Ui.Common.Resources.Logo_Ryujinx.png?assembly=Ryujinx.Ui.Common" />
+        <TextBlock
+            Grid.Row="1"
+            Grid.Column="1"
+            Margin="10"
+            VerticalAlignment="Stretch"
+            Text="{Binding Message}"
+            TextWrapping="Wrap" />
+        <StackPanel
+            Name="ButtonStack"
+            Grid.Row="2"
+            Grid.Column="1"
+            Margin="10"
+            HorizontalAlignment="Right"
+            Orientation="Horizontal"
+            Spacing="10" />
+    </Grid>
+</Window>
\ No newline at end of file
diff --git a/Ryujinx.Ava/UI/Applet/ErrorAppletWindow.axaml.cs b/Ryujinx.Ava/UI/Applet/ErrorAppletWindow.axaml.cs
new file mode 100644
index 00000000..a17826f8
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/ErrorAppletWindow.axaml.cs
@@ -0,0 +1,80 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Threading;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Windows;
+using System.Threading.Tasks;
+
+namespace Ryujinx.Ava.UI.Applet
+{
+    internal partial class ErrorAppletWindow : StyleableWindow
+    {
+        private readonly Window _owner;
+        private object _buttonResponse;
+
+        public ErrorAppletWindow(Window owner, string[] buttons, string message)
+        {
+            _owner = owner;
+            Message = message;
+            DataContext = this;
+            InitializeComponent();
+#if DEBUG
+            this.AttachDevTools();
+#endif
+            int responseId = 0;
+
+            if (buttons != null)
+            {
+                foreach (string buttonText in buttons)
+                {
+                    AddButton(buttonText, responseId);
+                    responseId++;
+                }
+            }
+            else
+            {
+                AddButton(LocaleManager.Instance["InputDialogOk"], 0);
+            }
+        }
+
+        public ErrorAppletWindow()
+        {
+            DataContext = this;
+            InitializeComponent();
+#if DEBUG
+            this.AttachDevTools();
+#endif
+        }
+
+        public string Message { get; set; }
+
+        private void AddButton(string label, object tag)
+        {
+            Dispatcher.UIThread.InvokeAsync(() =>
+            {
+                Button button = new() { Content = label, Tag = tag };
+
+                button.Click += Button_Click;
+                ButtonStack.Children.Add(button);
+            });
+        }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            if (sender is Button button)
+            {
+                _buttonResponse = button.Tag;
+            }
+
+            Close();
+        }
+
+        public async Task<object> Run()
+        {
+            await ShowDialog(_owner);
+
+            return _buttonResponse;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.Ava/UI/Applet/SwkbdAppletDialog.axaml b/Ryujinx.Ava/UI/Applet/SwkbdAppletDialog.axaml
new file mode 100644
index 00000000..43ccf9e7
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/SwkbdAppletDialog.axaml
@@ -0,0 +1,64 @@
+<UserControl
+    x:Class="Ryujinx.Ava.UI.Controls.SwkbdAppletDialog"
+    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"
+    Width="400"
+    mc:Ignorable="d"
+    Focusable="True">
+    <Grid
+        Margin="20"
+        HorizontalAlignment="Stretch"
+        VerticalAlignment="Stretch">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition />
+        </Grid.ColumnDefinitions>
+        <Image
+            Grid.Row="1"
+            Grid.RowSpan="5"
+            Height="80"
+            MinWidth="50"
+            Margin="5,10,20,10"
+            VerticalAlignment="Center"
+            Source="resm:Ryujinx.Ui.Common.Resources.Logo_Ryujinx.png?assembly=Ryujinx.Ui.Common" />
+        <TextBlock
+            Grid.Row="1"
+            Grid.Column="1"
+            Margin="5"
+            Text="{Binding MainText}"
+            TextWrapping="Wrap" />
+        <TextBlock
+            Grid.Row="2"
+            Grid.Column="1"
+            Margin="5"
+            Text="{Binding SecondaryText}"
+            TextWrapping="Wrap" />
+        <TextBox
+            Name="Input"
+            Grid.Row="3"
+            Grid.Column="1"
+            HorizontalAlignment="Stretch"
+            VerticalAlignment="Center"
+            KeyUp="Message_KeyUp"
+            Text="{Binding Message}"
+            TextInput="Message_TextInput"
+            TextWrapping="Wrap"
+            UseFloatingWatermark="True" />
+        <TextBlock
+            Name="Error"
+            Grid.Row="4"
+            Grid.Column="1"
+            Margin="5"
+            HorizontalAlignment="Stretch"
+            TextWrapping="Wrap" />
+    </Grid>
+</UserControl>
\ No newline at end of file
diff --git a/Ryujinx.Ava/UI/Applet/SwkbdAppletDialog.axaml.cs b/Ryujinx.Ava/UI/Applet/SwkbdAppletDialog.axaml.cs
new file mode 100644
index 00000000..80be2979
--- /dev/null
+++ b/Ryujinx.Ava/UI/Applet/SwkbdAppletDialog.axaml.cs
@@ -0,0 +1,177 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Media;
+using FluentAvalonia.Core;
+using FluentAvalonia.UI.Controls;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Windows;
+using Ryujinx.HLE.HOS.Applets;
+using System;
+using System.Threading.Tasks;
+
+namespace Ryujinx.Ava.UI.Controls
+{
+    internal partial class SwkbdAppletDialog : UserControl
+    {
+        private Predicate<int> _checkLength;
+        private int _inputMax;
+        private int _inputMin;
+        private string _placeholder;
+
+        private ContentDialog _host;
+
+        public SwkbdAppletDialog(string mainText, string secondaryText, string placeholder)
+        {
+            MainText = mainText;
+            SecondaryText = secondaryText;
+            DataContext = this;
+            _placeholder = placeholder;
+            InitializeComponent();
+
+            Input.Watermark = _placeholder;
+
+            Input.AddHandler(TextInputEvent, Message_TextInput, RoutingStrategies.Tunnel, true);
+
+            SetInputLengthValidation(0, int.MaxValue); // Disable by default.
+        }
+
+        public SwkbdAppletDialog()
+        {
+            DataContext = this;
+            InitializeComponent();
+        }
+
+        public string Message { get; set; } = "";
+        public string MainText { get; set; } = "";
+        public string SecondaryText { get; set; } = "";
+
+        public static async Task<(UserResult Result, string Input)> ShowInputDialog(StyleableWindow window, string title, SoftwareKeyboardUiArgs args)
+        {
+            ContentDialog contentDialog = new ContentDialog();
+
+            UserResult result = UserResult.Cancel;
+
+            SwkbdAppletDialog content = new SwkbdAppletDialog(args.HeaderText, args.SubtitleText, args.GuideText)
+            {
+                Message = args.InitialText ?? ""
+            };
+
+            string input = string.Empty;
+
+            var overlay = new ContentDialogOverlayWindow()
+            {
+                Height = window.Bounds.Height,
+                Width = window.Bounds.Width,
+                Position = window.PointToScreen(new Point())
+            };
+
+            window.PositionChanged += OverlayOnPositionChanged;
+
+            void OverlayOnPositionChanged(object sender, PixelPointEventArgs e)
+            {
+                overlay.Position = window.PointToScreen(new Point());
+            }
+
+            contentDialog = overlay.ContentDialog;
+
+            bool opened = false;
+
+            content.SetInputLengthValidation(args.StringLengthMin, args.StringLengthMax);
+
+            content._host = contentDialog;
+            contentDialog.Title = title;
+            contentDialog.PrimaryButtonText = args.SubmitText;
+            contentDialog.IsPrimaryButtonEnabled = content._checkLength(content.Message.Length);
+            contentDialog.SecondaryButtonText = "";
+            contentDialog.CloseButtonText = LocaleManager.Instance["InputDialogCancel"];
+            contentDialog.Content = content;
+
+            TypedEventHandler<ContentDialog, ContentDialogClosedEventArgs> handler = (sender, eventArgs) =>
+            {
+                if (eventArgs.Result == ContentDialogResult.Primary)
+                {
+                    result = UserResult.Ok;
+                    input = content.Input.Text;
+                }
+            };
+            contentDialog.Closed += handler;
+
+            overlay.Opened += OverlayOnActivated;
+
+            async void OverlayOnActivated(object sender, EventArgs e)
+            {
+                if (opened)
+                {
+                    return;
+                }
+
+                opened = true;
+
+                overlay.Position = window.PointToScreen(new Point());
+
+                await contentDialog.ShowAsync(overlay);
+                contentDialog.Closed -= handler;
+                overlay.Close();
+            };
+
+            await overlay.ShowDialog(window);
+
+            return (result, input);
+        }
+
+        public void SetInputLengthValidation(int min, int max)
+        {
+            _inputMin = Math.Min(min, max);
+            _inputMax = Math.Max(min, max);
+
+            Error.IsVisible = false;
+            Error.FontStyle = FontStyle.Italic;
+
+            if (_inputMin <= 0 && _inputMax == int.MaxValue) // Disable.
+            {
+                Error.IsVisible = false;
+
+                _checkLength = length => true;
+            }
+            else if (_inputMin > 0 && _inputMax == int.MaxValue)
+            {
+                Error.IsVisible = true;
+                Error.Text = string.Format(LocaleManager.Instance["SwkbdMinCharacters"], _inputMin);
+
+                _checkLength = length => _inputMin <= length;
+            }
+            else
+            {
+                Error.IsVisible = true;
+                Error.Text = string.Format(LocaleManager.Instance["SwkbdMinRangeCharacters"], _inputMin, _inputMax);
+
+                _checkLength = length => _inputMin <= length && length <= _inputMax;
+            }
+
+            Message_TextInput(this, new TextInputEventArgs());
+        }
+
+        private void Message_TextInput(object sender, TextInputEventArgs e)
+        {
+            if (_host != null)
+            {
+                _host.IsPrimaryButtonEnabled = _checkLength(Message.Length);
+            }
+        }
+
+        private void Message_KeyUp(object sender, KeyEventArgs e)
+        {
+            if (e.Key == Key.Enter && _host.IsPrimaryButtonEnabled)
+            {
+                _host.Hide(ContentDialogResult.Primary);
+            }
+            else
+            {
+                _host.IsPrimaryButtonEnabled = _checkLength(Message.Length);
+            }
+        }
+    }
+}
\ No newline at end of file