子程序优化

UIShare/GlobalVariable/ScopedContext.cs

@@ -1,5 +1,6 @@
 using DeviceCommand.Base;
 using MaterialDesignThemes.Wpf;
+using Prism.Mvvm;
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
@@ -14,9 +15,35 @@ using UIShare.UIViewModel;
 
 namespace UIShare.GlobalVariable
 {
-    public class ScopedContext
+    public class ScopedContext : BindableBase
     {
         private static readonly Random _randomSeed = new Random();
+
+        #region 子程序导航（主程序 / 错误程序各自独立）
+
+        /// <summary>主程序 Tab 的导航状态</summary>
+        public ProgramNavigationState MainNav { get; } = new();
+
+        /// <summary>错误程序 Tab 的导航状态</summary>
+        public ProgramNavigationState ErrorNav { get; } = new();
+
+        /// <summary>
+        /// 根据当前选中的 Tab 返回对应的导航状态
+        /// </summary>
+        public ProgramNavigationState ActiveNav =>
+            SelectedStepList == "错误程序" ? ErrorNav : MainNav;
+
+        /// <summary>
+        /// 重置两个 Tab 的导航栈，回到根程序
+        /// </summary>
+        public void ResetNavigation()
+        {
+            MainNav.Reset(Program, "主程序");
+            ErrorNav.Reset(Program, "错误程序");
+        }
+
+        #endregion
+
         public ProgramVM Program { get; set; } = new();
         public String SelectedStepList { get; set; } = "主程序";
         public string CurrentFilePath { get; set; }
@@ -45,6 +72,7 @@ namespace UIShare.GlobalVariable
         public int DebugRandomId { get; private set; }
         public ScopedContext()
         {
+            ErrorNav.IsErrorTab = true;
             lock (_randomSeed)
             {
                 // 每次诞生一个新上下文，就在 10000 到 99999 之间随机摇一个数