子程序优化

ADP/ViewModels/ShellViewModel.cs

@@ -154,6 +154,24 @@ namespace ADP.ViewModels
         public ICommand MonitorValueSettingCommand { get; set; }
         public ICommand GetFileStringCommand { get; set; }
         public ICommand SilenceBuzzerCommand { get; set; }
+        public ICommand GoBackCommand { get; set; }
+        #endregion
+
+        #region 子程序导航
+
+        public bool CanGoBack =>
+            (CurrentContext?.MainNav.CanGoBack ?? false) ||
+            (CurrentContext?.ErrorNav.CanGoBack ?? false);
+
+        private void OnGoBack()
+        {
+            var ctx = CurrentContext;
+            if (ctx == null) return;
+            // 工具栏按钮同时重置两个 Tab 的导航
+            ctx.MainNav.Reset(ctx.Program, "主程序");
+            ctx.ErrorNav.Reset(ctx.Program, "错误程序");
+        }
+
         #endregion
 
         public ShellViewModel(IContainerProvider containerProvider)
@@ -188,6 +206,7 @@ namespace ADP.ViewModels
             MonitorValueSettingCommand = new DelegateCommand(MonitorValueSetting);
             GetFileStringCommand = new DelegateCommand(GetFileString);
             SilenceBuzzerCommand = new AsyncDelegateCommand(SilenceBuzzer);
+            GoBackCommand = new DelegateCommand(OnGoBack);
 
             _globalInfo.ContextDic.Add("default", new ScopedContext());
 
@@ -457,6 +476,9 @@ namespace ADP.ViewModels
 
             LoggerHelper.InfoWithNotify(runningScope, $"{_globalInfo.UserName} 执行工位 [{runningScope}] 复位命令");
 
+            // 重置导航栈，回到根程序界面
+            targetContext.ResetNavigation();
+
             _executionTasks.TryGetValue(runningScope, out var currentTask);
             _errorExecutionTasks.TryGetValue(runningScope, out var errorTask);
 
@@ -573,6 +595,7 @@ namespace ADP.ViewModels
             targetContext.Program.Parameters.Clear();
             targetContext.Program.StepCollection.Clear();
             targetContext.Program.ErrorStepCollection.Clear();
+            targetContext.ResetNavigation();
             foreach (var item in CurrentConfig.ParameterList)
             {
                 var param = CurrentConfig.SharedParameterList.FirstOrDefault(x => x.ParameterName == item.Name);