refactor: 重构待办事项模块结构与命名

2026-04-08 19:59:50 +08:00
parent 7a4c516a20
commit 04263dff4e
30 changed files with 888 additions and 320 deletions
@@ -0,0 +1,99 @@
+using System.Reflection;
+
+namespace Hua.Todo.Maui.Platforms.Windows;
+
+internal static class WebView2RuntimeDetector
+{
+	/// <summary>
+	/// 判断当前 Windows 系统是否可用 WebView2 Runtime。
+	/// 优先通过已知的 Evergreen 安装目录探测（避免因托管程序集缺失/裁剪导致误判），
+	/// 其次再尝试通过 WebView2 SDK 的 <c>CoreWebView2Environment.GetAvailableBrowserVersionString</c> 获取版本。
+	/// </summary>
+	/// <param name="version">检测到的运行时版本（若可用）。</param>
+	/// <returns>若系统存在可用的 WebView2 Runtime，则返回 <c>true</c>；否则返回 <c>false</c>。</returns>
+	internal static bool IsRuntimeInstalled(out string? version)
+	{
+		version = null;
+
+		try
+		{
+			version = TryGetEvergreenVersionFromKnownLocations();
+			if (!string.IsNullOrWhiteSpace(version))
+			{
+				return true;
+			}
+
+			var type = Type.GetType("Microsoft.Web.WebView2.Core.CoreWebView2Environment, Microsoft.Web.WebView2.Core");
+			if (type == null)
+			{
+				return false;
+			}
+
+			version = TryInvokeVersionGetter(type);
+			return !string.IsNullOrWhiteSpace(version);
+		}
+		catch
+		{
+			return false;
+		}
+	}
+
+	private static string? TryGetEvergreenVersionFromKnownLocations()
+	{
+		var candidates = new[]
+		{
+			Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86), "Microsoft", "EdgeWebView", "Application"),
+			Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), "Microsoft", "EdgeWebView", "Application"),
+			Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Microsoft", "EdgeWebView", "Application"),
+		};
+
+		Version? best = null;
+
+		foreach (var baseDir in candidates)
+		{
+			if (string.IsNullOrWhiteSpace(baseDir) || !Directory.Exists(baseDir))
+			{
+				continue;
+			}
+
+			foreach (var dir in Directory.EnumerateDirectories(baseDir))
+			{
+				var name = Path.GetFileName(dir);
+				if (!Version.TryParse(name, out var v))
+				{
+					continue;
+				}
+
+				if (!File.Exists(Path.Combine(dir, "msedgewebview2.exe")))
+				{
+					continue;
+				}
+
+				if (best == null || v > best)
+				{
+					best = v;
+				}
+			}
+		}
+
+		return best?.ToString();
+	}
+
+	private static string? TryInvokeVersionGetter(Type environmentType)
+	{
+		var noArg = environmentType.GetMethod("GetAvailableBrowserVersionString", BindingFlags.Public | BindingFlags.Static, Type.DefaultBinder, Type.EmptyTypes, null);
+		if (noArg != null)
+		{
+			return noArg.Invoke(null, null) as string;
+		}
+
+		var oneArg = environmentType.GetMethod("GetAvailableBrowserVersionString", BindingFlags.Public | BindingFlags.Static, Type.DefaultBinder, new[] { typeof(string) }, null);
+		if (oneArg != null)
+		{
+			return oneArg.Invoke(null, new object?[] { null }) as string;
+		}
+
+		return null;
+	}
+}
+