添加项目文件。

2024-09-22 11:05:41 +08:00
parent fb5d55723a
commit 49ceaae6a8
764 changed files with 78850 additions and 0 deletions
--- a/Sai.Toolkit.Core/Heplers/SingletonViewHelper.cs
+++ b/Sai.Toolkit.Core/Heplers/SingletonViewHelper.cs
@@ -0,0 +1,68 @@
+using System.Windows;
+using System.Windows.Interop;
+
+namespace Sai.Toolkit.Core.Helpers;
+
+public sealed record SingletonViewHelper<T>
+    where T : Window, new()
+{
+    private static T instance;
+    private static readonly object Padlock = new();
+
+    private SingletonViewHelper() { }
+
+    public static T GetInstance(out bool isNewCreate)
+    {
+        isNewCreate = false;
+        //double-check locking
+        if (instance == null)
+        {
+            isNewCreate = true;
+            lock (Padlock)
+            {
+                instance ??= new T();
+                instance.Closed += OnWindowClosed;
+            }
+        }
+        return instance;
+    }
+
+    private static void OnWindowClosed(object sender, EventArgs e)
+    {
+        instance = null;
+    }
+}
+
+public static class SingletonChildWindowManager
+{
+    private static readonly Dictionary<Type, Window> Windows = [];
+    public static void ShowOrActivate<TWindow, TViewModel>(params object[] viewModelParams)
+        where TWindow : Window, new()
+        where TViewModel : class
+    {
+        var windowType = typeof(TWindow);
+        if (Windows.TryGetValue(windowType, out var window) && window != null)
+        {
+            window.Activate();
+        }
+        else
+        {
+            //CloseAllWindowsExcept(windowType);
+            Windows[windowType] = new TWindow();
+            Windows[windowType].Closed += (sender, args) => Windows[windowType] = null;
+            if (Windows[windowType].DataContext == null || Windows[windowType].DataContext is not TViewModel)
+            {
+                if (viewModelParams.Length == 0)
+                {
+                    Windows[windowType].DataContext = Activator.CreateInstance(typeof(TViewModel));
+                }
+                else
+                {
+                    Windows[windowType].DataContext = Activator.CreateInstance(typeof(TViewModel), viewModelParams);
+                }
+            }
+            _ = new WindowInteropHelper(Windows[windowType]) { Owner = System.Diagnostics.Process.GetCurrentProcess().MainWindowHandle };
+            Windows[windowType].Show();
+        }
+    }
+}