具备界面基础功能

SHH.CameraDashboard/ViewModels/CameraItemTopViewModel.cs

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+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using System.Windows;
+using System.Windows.Input;
+
+namespace SHH.CameraDashboard;
+
+public class CameraItemTopViewModel : INotifyPropertyChanged
+{
+    private WebApiCameraModel _camera;
+
+    /// <summary>
+    /// 当前选中的摄像头数据
+    /// </summary>
+    public WebApiCameraModel Camera
+    {
+        get => _camera;
+        set
+        {
+            if (_camera != value)
+            {
+                _camera = value;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(HasSelection)); // 通知界面是否有选中项
+            }
+        }
+    }
+
+    public ICommand EditDeviceCommand { get; }
+
+    /// <summary>
+    /// 辅助属性：用于界面判断是否显示内容
+    /// </summary>
+    public bool HasSelection => Camera != null;
+
+    public ICommand TogglePlayCommand { get; }
+
+    public ICommand PtzCommand { get; } // [新增]
+    
+    // [新增] 图像处理命令
+    public ICommand ImageProcessCommand { get; }
+
+    // [新增] 图像订阅命令
+    public ICommand ImageSubscribeCommand { get; }
+
+    public CameraItemTopViewModel()
+    {
+        // 绑定命令到执行方法
+        TogglePlayCommand = new RelayCommand<object>(async _ => await ExecuteTogglePlayAsync());
+
+        // 2. 初始化命令
+        EditDeviceCommand = new RelayCommand<object>(ExecuteEditDevice);
+
+        PtzCommand = new RelayCommand(ExecutePtz);
+
+        DeleteCommand = new RelayCommand(ExecuteDelete);
+
+        // 初始化新命令
+        ImageProcessCommand = new RelayCommand(ExecuteImageProcess);
+        ImageSubscribeCommand = new RelayCommand(ExecuteImageSubscribe);
+    }
+
+    // [新增] 执行图像处理
+    private void ExecuteImageProcess(object obj)
+    {
+        if (Camera == null) return;
+
+        // 触发全局事件，打开右侧面板
+        AppGlobal.RequestImgProc(this.Camera);
+    }
+
+    // [新增] 执行图像订阅
+    private void ExecuteImageSubscribe(object obj)
+    {
+        if (Camera == null) return;
+
+        // 不再直接 MessageBox，而是像 Edit/Ptz 一样发出全局请求
+        // 这会将操作权交给 MainViewModel，由它在右侧面板加载 View
+        AppGlobal.RequestSubscription(this.Camera);
+    }
+
+    private void ExecutePtz(object obj)
+    {
+        // 这里可以加个判断，比如 Brand=RTSP 或 File 可能不支持云台
+        // if (Model.Brand == (int)DeviceBrand.File) return;
+
+        AppGlobal.RequestPtz(this.Camera);
+    }
+
+    private async Task ExecuteTogglePlayAsync()
+    {
+        if (Camera == null) return;
+
+        // 1. 物理离线检查
+        if (!Camera.IsPhysicalOnline)
+        {
+            // 提示：设备断网，无法发送指令
+            MessageBox.Show("设备物理离线，无法操作");
+            return;
+        }
+
+        try
+        {
+            // 发送控制指令
+            var useServiceNode = AppGlobal.UseServiceNode;
+            if (useServiceNode != null)
+            {
+                bool isPlaying = Camera.Status.Equals("Playing");
+                bool isSuccess = await ApiClient.Instance.Cameras.ControlPowerAsync(
+                        Camera.Id,
+                        !isPlaying,
+                        "设备面板"
+                    );
+            }
+        }
+        catch (Exception ex)
+        {
+        }
+    }
+
+    /// <summary>
+    /// 执行编辑逻辑
+    /// </summary>
+    private void ExecuteEditDevice(object obj)
+    {
+        if (Camera == null) return;
+
+        AppGlobal.RequestEdit(Camera);
+    }
+
+    // 2. 自身的删除命令 (不需要参数，因为我手里有 Model)
+    public ICommand DeleteCommand { get; }
+
+    private void ExecuteDelete(object obj)
+    {
+        // 直接把手里的数据发出去
+        AppGlobal.RequestDelete(this.Camera);
+    }
+
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    protected void OnPropertyChanged([CallerMemberName] string name = "")
+        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+}