错误程序子程序优化

2026-08-07 14:54:01 +08:00
parent 80a2cbd80b
commit 99ac3f2b8d
9 changed files with 261 additions and 149 deletions
@@ -0,0 +1,89 @@
+using Prism.Mvvm;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using UIShare.UIViewModel;
+
+namespace UIShare.GlobalVariable
+{
+    /// <summary>
+    /// 单个 Tab（主程序 / 错误程序）的子程序导航状态。
+    /// 主程序和错误程序各自持有一个独立实例，互不干扰。
+    /// </summary>
+    public class ProgramNavigationState : BindableBase
+    {
+        /// <summary>是否为错误程序 Tab</summary>
+        public bool IsErrorTab { get; set; }
+
+        public Stack<ProgramVM> NavigationStack { get; } = new();
+
+        private ProgramVM _currentProgram;
+        public ProgramVM CurrentProgram
+        {
+            get => _currentProgram;
+            set
+            {
+                if (SetProperty(ref _currentProgram, value))
+                    RaisePropertyChanged(nameof(DisplaySteps));
+            }
+        }
+
+        /// <summary>
+        /// DataGrid 实际绑定的步骤集合。
+        /// 根程序 + 错误 Tab → ErrorStepCollection；其他情况 → StepCollection。
+        /// </summary>
+        public ObservableCollection<StepVM> DisplaySteps
+        {
+            get
+            {
+                if (CurrentProgram == null)
+                    return new ObservableCollection<StepVM>();
+                // 在根程序且是错误 Tab → 显示错误步骤集合
+                if (NavigationStack.Count == 0 && IsErrorTab)
+                    return CurrentProgram.ErrorStepCollection;
+                // 其他情况（主 Tab 或已进入子程序）→ 显示正常步骤集合
+                return CurrentProgram.StepCollection;
+            }
+        }
+
+        private string _breadcrumbPath = "主程序";
+        public string BreadcrumbPath
+        {
+            get => _breadcrumbPath;
+            set => SetProperty(ref _breadcrumbPath, value);
+        }
+
+        private bool _canGoBack;
+        public bool CanGoBack
+        {
+            get => _canGoBack;
+            set => SetProperty(ref _canGoBack, value);
+        }
+
+        /// <summary>
+        /// 用根程序初始化导航状态
+        /// </summary>
+        public void Initialize(ProgramVM rootProgram, string label)
+        {
+            NavigationStack.Clear();
+            CurrentProgram = rootProgram;
+            BreadcrumbPath = label;
+            CanGoBack = false;
+        }
+
+        /// <summary>
+        /// 清空导航栈，回到根程序
+        /// </summary>
+        public void Reset(ProgramVM rootProgram, string label)
+        {
+            NavigationStack.Clear();
+            CurrentProgram = rootProgram;
+            BreadcrumbPath = label;
+            CanGoBack = false;
+        }
+
+        /// <summary>
+        /// 根据栈状态刷新 CanGoBack
+        /// </summary>
+        public void UpdateCanGoBack() => CanGoBack = NavigationStack.Count > 0;
+    }
+}