Revert "remove integration test app."

This reverts commit 46ea187.

samples/IntegrationTestApp/App.axaml

@@ -0,0 +1,7 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="IntegrationTestApp.App">
+    <Application.Styles>
+        <FluentTheme Mode="Light"/>
+    </Application.Styles>
+</Application>

samples/IntegrationTestApp/App.axaml.cs

@@ -0,0 +1,24 @@
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+
+namespace IntegrationTestApp
+{
+    public class App : Application
+    {
+        public override void Initialize()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+
+        public override void OnFrameworkInitializationCompleted()
+        {
+            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+            {
+                desktop.MainWindow = new MainWindow();
+            }
+
+            base.OnFrameworkInitializationCompleted();
+        }
+    }
+}

samples/IntegrationTestApp/IntegrationTestApp.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <CFBundleName>IntegrationTestApp</CFBundleName>
+    <CFBundleIdentifier>net.avaloniaui.avalonia.integrationtestapp</CFBundleIdentifier>
+    <NSHighResolutionCapable>true</NSHighResolutionCapable>
+    <CFBundleShortVersionString>1.0.0</CFBundleShortVersionString>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Dotnet.Bundle" Version="0.9.13" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Avalonia.Diagnostics\Avalonia.Diagnostics.csproj" />
+    <ProjectReference Include="..\..\src\Avalonia.Themes.Fluent\Avalonia.Themes.Fluent.csproj" />
+  </ItemGroup>
+
+  <Import Project="..\..\build\BuildTargets.targets" />
+  <Import Project="..\..\build\SampleApp.props" />
+  <Import Project="..\..\build\ReferenceCoreLibraries.props" />
+
+</Project>

samples/IntegrationTestApp/MacOSIntegration.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Runtime.InteropServices;
+using Avalonia.Controls;
+
+namespace IntegrationTestApp
+{
+    public static class MacOSIntegration
+    {
+        [DllImport("/usr/lib/libobjc.dylib", EntryPoint = "sel_registerName")]
+        private static extern IntPtr GetHandle(string name);
+
+        [DllImport("/usr/lib/libobjc.dylib", EntryPoint = "objc_msgSend")]
+        private static extern long Int64_objc_msgSend(IntPtr receiver, IntPtr selector);
+
+        private static readonly IntPtr s_orderedIndexSelector;
+
+        static MacOSIntegration()
+        {
+            s_orderedIndexSelector = GetHandle("orderedIndex");;
+        }
+
+        public static long GetOrderedIndex(Window window)
+        {
+            return Int64_objc_msgSend(window.PlatformImpl!.Handle.Handle, s_orderedIndexSelector);
+        }
+    }
+}

samples/IntegrationTestApp/MainWindow.axaml

@@ -0,0 +1,131 @@
+<Window 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"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="IntegrationTestApp.MainWindow"
+        Name="MainWindow"
+        Title="IntegrationTestApp">
+  <NativeMenu.Menu>
+    <NativeMenu>
+      <NativeMenuItem Header="File">
+        <NativeMenu>
+          <NativeMenuItem Header="Open..."/>
+        </NativeMenu>
+      </NativeMenuItem>
+      <NativeMenuItem Header="View">
+        <NativeMenu/>
+      </NativeMenuItem>
+    </NativeMenu>
+  </NativeMenu.Menu>
+  <DockPanel>
+    <NativeMenuBar DockPanel.Dock="Top"/>
+    <StackPanel DockPanel.Dock="Bottom" Margin="4" Orientation="Horizontal">
+      <TextBlock Margin="0,0,4,0">WindowState:</TextBlock>
+      <TextBlock Name="MainWindowState" Text="{Binding WindowState}"/>
+    </StackPanel>
+
+    <TabControl TabStripPlacement="Left" Name="MainTabs">
+      <TabItem Header="Automation">
+        <StackPanel>
+          <TextBlock Name="TextBlockWithName">TextBlockWithName</TextBlock>
+          <TextBlock Name="NotTheAutomationId">
+            TextBlockWithNameAndAutomationId
+          </TextBlock>
+          <TextBlock Name="TextBlockAsLabel">Label for TextBox</TextBlock>
+          <TextBox Name="LabeledByTextBox">
+            Foo
+          </TextBox>
+        </StackPanel>
+      </TabItem>
+
+      <TabItem Header="Button">
+        <StackPanel>
+          <Button Name="DisabledButton" IsEnabled="False">
+            Disabled Button
+          </Button>
+          <Button Name="BasicButton">
+            Basic Button
+          </Button>
+          <Button Name="ButtonWithTextBlock">
+            <TextBlock>Button with TextBlock</TextBlock>
+          </Button>
+          <Button Name="ButtonWithAcceleratorKey" HotKey="Ctrl+B">Button with Accelerator Key</Button>
+        </StackPanel>
+      </TabItem>
+
+      <TabItem Header="CheckBox">
+        <StackPanel>
+          <CheckBox Name="UncheckedCheckBox">Unchecked</CheckBox>
+          <CheckBox Name="CheckedCheckBox" IsChecked="True">Checked</CheckBox>
+          <CheckBox Name="ThreeStateCheckBox" IsThreeState="True" IsChecked="{x:Null}">ThreeState</CheckBox>
+        </StackPanel>
+      </TabItem>
+
+      <TabItem Header="ComboBox">
+        <StackPanel>
+          <ComboBox Name="BasicComboBox">
+            <ComboBoxItem>Item 0</ComboBoxItem>
+            <ComboBoxItem>Item 1</ComboBoxItem>
+          </ComboBox>
+          <Button Name="ComboBoxSelectionClear">Clear Selection</Button>
+          <Button Name="ComboBoxSelectFirst">Select First</Button>
+        </StackPanel>
+      </TabItem>
+
+      <TabItem Header="ListBox">
+        <DockPanel>
+          <StackPanel DockPanel.Dock="Bottom">
+            <Button Name="ListBoxSelectionClear">Clear Selection</Button>
+          </StackPanel>
+          <ListBox Name="BasicListBox" Items="{Binding ListBoxItems}" SelectionMode="Multiple"/>
+        </DockPanel>
+      </TabItem>
+
+      <TabItem Header="Menu">
+        <DockPanel>
+          <Menu DockPanel.Dock="Top">
+            <MenuItem Name="RootMenuItem" Header="_Root">
+              <MenuItem Name="Child1MenuItem" Header="_Child 1" InputGesture="Ctrl+O" Click="MenuClicked"/>
+              <MenuItem Name="Child2MenuItem" Header="C_hild 2">
+                <MenuItem Name="GrandchildMenuItem" Header="_Grandchild" Click="MenuClicked"/>
+              </MenuItem>
+            </MenuItem>
+          </Menu>
+          <StackPanel>
+            <TextBlock Name="ClickedMenuItem">None</TextBlock>
+            <Button Name="MenuClickedMenuItemReset">Reset</Button>
+            <TextBox Name="MenuFocusTest"/>
+          </StackPanel>
+        </DockPanel>
+      </TabItem>
+
+      <TabItem Header="Window">
+        <StackPanel>
+          <TextBox Name="ShowWindowSize" Watermark="Window Size"/>
+          <ComboBox Name="ShowWindowMode" SelectedIndex="0">
+            <ComboBoxItem>NonOwned</ComboBoxItem>
+            <ComboBoxItem>Owned</ComboBoxItem>
+            <ComboBoxItem>Modal</ComboBoxItem>
+          </ComboBox>
+          <ComboBox Name="ShowWindowLocation" SelectedIndex="0">
+            <ComboBoxItem>Manual</ComboBoxItem>
+            <ComboBoxItem>CenterScreen</ComboBoxItem>
+            <ComboBoxItem>CenterOwner</ComboBoxItem>
+          </ComboBox>
+          <ComboBox Name="ShowWindowState" SelectedIndex="0">
+            <ComboBoxItem Name="ShowWindowStateNormal">Normal</ComboBoxItem>
+            <ComboBoxItem Name="ShowWindowStateMinimized">Minimized</ComboBoxItem>
+            <ComboBoxItem Name="ShowWindowStateMaximized">Maximized</ComboBoxItem>
+            <ComboBoxItem Name="ShowWindowStateFullScreen">FullScreen</ComboBoxItem>
+          </ComboBox>
+          <Button Name="ShowWindow">Show Window</Button>
+          <Button Name="SendToBack">Send to Back</Button>
+          <Button Name="EnterFullscreen">Enter Fullscreen</Button>
+          <Button Name="ExitFullscreen">Exit Fullscreen</Button>
+          <Button Name="RestoreAll">Restore All</Button>
+        </StackPanel>
+      </TabItem>
+    </TabControl>
+  </DockPanel>
+</Window>

samples/IntegrationTestApp/MainWindow.axaml.cs

@@ -0,0 +1,153 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Avalonia;
+using Avalonia.Automation;
+using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.VisualTree;
+using Microsoft.CodeAnalysis;
+
+namespace IntegrationTestApp
+{
+    public class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+            InitializeViewMenu();
+            this.AttachDevTools();
+            AddHandler(Button.ClickEvent, OnButtonClick);
+            ListBoxItems = Enumerable.Range(0, 100).Select(x => "Item " + x).ToList();
+            DataContext = this;
+        }
+
+        public List<string> ListBoxItems { get; }
+
+        private void InitializeComponent()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+
+        private void InitializeViewMenu()
+        {
+            var mainTabs = this.FindControl<TabControl>("MainTabs");
+            var viewMenu = (NativeMenuItem)NativeMenu.GetMenu(this).Items[1];
+
+            foreach (TabItem tabItem in mainTabs.Items)
+            {
+                var menuItem = new NativeMenuItem
+                {
+                    Header = (string)tabItem.Header!,
+                    IsChecked = tabItem.IsSelected,
+                    ToggleType = NativeMenuItemToggleType.Radio,
+                };
+
+                menuItem.Click += (s, e) => tabItem.IsSelected = true;
+                viewMenu.Menu.Items.Add(menuItem);
+            }
+        }
+
+        private void ShowWindow()
+        {
+            var sizeTextBox = this.GetControl<TextBox>("ShowWindowSize");
+            var modeComboBox = this.GetControl<ComboBox>("ShowWindowMode");
+            var locationComboBox = this.GetControl<ComboBox>("ShowWindowLocation");
+            var stateComboBox = this.GetControl<ComboBox>("ShowWindowState");
+            var size = !string.IsNullOrWhiteSpace(sizeTextBox.Text) ? Size.Parse(sizeTextBox.Text) : (Size?)null;
+            var owner = (Window)this.GetVisualRoot()!;
+
+            var window = new ShowWindowTest
+            {
+                WindowStartupLocation = (WindowStartupLocation)locationComboBox.SelectedIndex,
+            };
+
+            if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime lifetime)
+            {
+                // Make sure the windows have unique names and AutomationIds.
+                var existing = lifetime.Windows.OfType<ShowWindowTest>().Count();
+                if (existing > 0)
+                {
+                    AutomationProperties.SetAutomationId(window, window.Name + (existing + 1));
+                    window.Title += $" {existing + 1}";
+                }
+            }
+
+            if (size.HasValue)
+            {
+                window.Width = size.Value.Width;
+                window.Height = size.Value.Height;
+            }
+
+            sizeTextBox.Text = string.Empty;
+            window.WindowState = (WindowState)stateComboBox.SelectedIndex;
+
+            switch (modeComboBox.SelectedIndex)
+            {
+                case 0:
+                    window.Show();
+                    break;
+                case 1:
+                    window.Show(owner);
+                    break;
+                case 2:
+                    window.ShowDialog(owner);
+                    break;
+            }
+        }
+
+        private void SendToBack()
+        {
+            var lifetime = (ClassicDesktopStyleApplicationLifetime)Application.Current!.ApplicationLifetime!;
+
+            foreach (var window in lifetime.Windows)
+            {
+                window.Activate();
+            }
+        }
+
+        private void RestoreAll()
+        {
+            var lifetime = (ClassicDesktopStyleApplicationLifetime)Application.Current!.ApplicationLifetime!;
+
+            foreach (var window in lifetime.Windows)
+            {
+                window.Show();
+                if (window.WindowState == WindowState.Minimized)
+                    window.WindowState = WindowState.Normal;
+            }
+        }
+
+        private void MenuClicked(object? sender, RoutedEventArgs e)
+        {
+            var clickedMenuItemTextBlock = this.FindControl<TextBlock>("ClickedMenuItem");
+            clickedMenuItemTextBlock.Text = ((MenuItem)sender!).Header.ToString();
+        }
+
+        private void OnButtonClick(object? sender, RoutedEventArgs e)
+        {
+            var source = e.Source as Button;
+
+            if (source?.Name == "ComboBoxSelectionClear")
+                this.FindControl<ComboBox>("BasicComboBox").SelectedIndex = -1;
+            if (source?.Name == "ComboBoxSelectFirst")
+                this.FindControl<ComboBox>("BasicComboBox").SelectedIndex = 0;
+            if (source?.Name == "ListBoxSelectionClear")
+                this.FindControl<ListBox>("BasicListBox").SelectedIndex = -1;
+            if (source?.Name == "MenuClickedMenuItemReset")
+                this.FindControl<TextBlock>("ClickedMenuItem").Text = "None";
+            if (source?.Name == "ShowWindow")
+                ShowWindow();
+            if (source?.Name == "SendToBack")
+                SendToBack();
+            if (source?.Name == "EnterFullscreen")
+                WindowState = WindowState.FullScreen;
+            if (source?.Name == "ExitFullscreen")
+                WindowState = WindowState.Normal;
+            if (source?.Name == "RestoreAll")
+                RestoreAll();
+        }
+    }
+}

samples/IntegrationTestApp/Program.cs

@@ -0,0 +1,22 @@
+using System;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+
+namespace IntegrationTestApp
+{
+    class Program
+    {
+        // Initialization code. Don't use any Avalonia, third-party APIs or any
+        // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+        // yet and stuff might break.
+        public static void Main(string[] args) => BuildAvaloniaApp()
+            .StartWithClassicDesktopLifetime(args);
+
+        // Avalonia configuration, don't remove; also used by visual designer.
+        public static AppBuilder BuildAvaloniaApp()
+            => AppBuilder.Configure<App>()
+                .UsePlatformDetect()
+                .LogToTrace();
+    }
+}