Add WebLoginDialog for Windows Chardonnay

Source/LibationAvalonia/Controls/NativeWebView.cs

@@ -0,0 +1,176 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Platform;
+using Avalonia;
+using LibationFileManager;
+using System;
+using System.Threading.Tasks;
+
+namespace LibationAvalonia.Controls;
+
+#nullable enable
+public class NativeWebView : NativeControlHost, IWebView
+{
+	private IWebViewAdapter? _webViewAdapter;
+	private Uri? _delayedSource;
+	private TaskCompletionSource _webViewReadyCompletion = new();
+
+	public event EventHandler<WebViewNavigationEventArgs>? NavigationCompleted;
+
+	public event EventHandler<WebViewNavigationEventArgs>? NavigationStarted;
+	public event EventHandler? DOMContentLoaded;
+
+	public bool CanGoBack => _webViewAdapter?.CanGoBack ?? false;
+
+	public bool CanGoForward => _webViewAdapter?.CanGoForward ?? false;
+
+	public Uri? Source
+	{
+		get => _webViewAdapter?.Source ?? throw new InvalidOperationException("Control was not initialized");
+		set
+		{
+			if (_webViewAdapter is null)
+			{
+				_delayedSource = value;
+				return;
+			}
+			_webViewAdapter.Source = value;
+		}
+	}
+
+
+	public bool GoBack()
+	{
+		return _webViewAdapter?.GoBack() ?? throw new InvalidOperationException("Control was not initialized");
+	}
+
+	public bool GoForward()
+	{
+		return _webViewAdapter?.GoForward() ?? throw new InvalidOperationException("Control was not initialized");
+	}
+
+	public Task<string?> InvokeScriptAsync(string scriptName)
+	{
+		return _webViewAdapter is null
+			? throw new InvalidOperationException("Control was not initialized")
+			: _webViewAdapter.InvokeScriptAsync(scriptName);
+	}
+
+	public void Navigate(Uri url)
+	{
+		(_webViewAdapter ?? throw new InvalidOperationException("Control was not initialized"))
+			.Navigate(url);
+	}
+
+	public Task NavigateToString(string text)
+	{
+		return (_webViewAdapter ?? throw new InvalidOperationException("Control was not initialized"))
+			.NavigateToString(text);
+	}
+
+	public void Refresh()
+	{
+		(_webViewAdapter ?? throw new InvalidOperationException("Control was not initialized"))
+			.Refresh();
+	}
+
+	public void Stop()
+	{
+		(_webViewAdapter ?? throw new InvalidOperationException("Control was not initialized"))
+			.Stop();
+	}
+
+	public Task WaitForNativeHost()
+	{
+		return _webViewReadyCompletion.Task;
+	}
+
+	private class PlatformHandle : IPlatformHandle
+	{
+		public nint Handle { get; init; }
+
+		public string? HandleDescriptor { get; init; }
+	}
+
+	protected override IPlatformHandle CreateNativeControlCore(IPlatformHandle parent)
+	{
+		_webViewAdapter = InteropFactory.Create().CreateWebViewAdapter();
+
+		if (_webViewAdapter is null)
+			return base.CreateNativeControlCore(parent);
+		else
+		{
+			SubscribeOnEvents();
+			var handle = new PlatformHandle
+			{
+				Handle = _webViewAdapter.PlatformHandle.Handle,
+				HandleDescriptor = _webViewAdapter.PlatformHandle.HandleDescriptor
+			};
+
+			if (_delayedSource is not null)
+			{
+				_webViewAdapter.Source = _delayedSource;
+			}
+
+			_webViewReadyCompletion.TrySetResult();
+
+			return handle;
+		}
+	}
+
+	private void SubscribeOnEvents()
+	{
+		if (_webViewAdapter is not null)
+		{
+			_webViewAdapter.NavigationStarted += WebViewAdapterOnNavigationStarted;
+			_webViewAdapter.NavigationCompleted += WebViewAdapterOnNavigationCompleted;
+			_webViewAdapter.DOMContentLoaded += _webViewAdapter_DOMContentLoaded;
+		}
+	}
+
+	private void _webViewAdapter_DOMContentLoaded(object? sender, EventArgs e)
+	{
+		DOMContentLoaded?.Invoke(this, e);
+	}
+
+	private void WebViewAdapterOnNavigationStarted(object? sender, WebViewNavigationEventArgs e)
+	{
+		NavigationStarted?.Invoke(this, e);
+	}
+
+	private void WebViewAdapterOnNavigationCompleted(object? sender, WebViewNavigationEventArgs e)
+	{
+		NavigationCompleted?.Invoke(this, e);
+	}
+
+	protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
+	{
+		base.OnPropertyChanged(change);
+		if (change.Property == BoundsProperty && change.NewValue is Rect rect)
+		{
+			var scaling = (float)(VisualRoot?.RenderScaling ?? 1.0f);
+			_webViewAdapter?.HandleResize((int)(rect.Width * scaling), (int)(rect.Height * scaling), scaling);
+		}
+	}
+
+	protected override void OnKeyDown(KeyEventArgs e)
+	{
+		if (_webViewAdapter != null)
+		{
+			e.Handled = _webViewAdapter.HandleKeyDown((uint)e.Key, (uint)e.KeyModifiers);
+		}
+
+		base.OnKeyDown(e);
+	}
+
+	protected override void DestroyNativeControlCore(IPlatformHandle control)
+	{
+		if (_webViewAdapter is not null)
+		{
+			_webViewReadyCompletion = new TaskCompletionSource();
+			_webViewAdapter.NavigationStarted -= WebViewAdapterOnNavigationStarted;
+			_webViewAdapter.NavigationCompleted -= WebViewAdapterOnNavigationCompleted;
+			(_webViewAdapter as IDisposable)?.Dispose();
+		}
+	}
+}