524 lines
17 KiB
C#
524 lines
17 KiB
C#
using System.ComponentModel;
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using System.Windows;
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using System.Windows.Input;
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namespace SHH.CameraDashboard
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{
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/// <summary>
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/// 主窗口的视图模型 (ViewModel)。
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/// 它封装了主窗口的所有业务逻辑、状态和用户交互命令。
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/// 它还作为一个中心协调者，响应全局事件并管理子视图（如右侧编辑面板和蒙板）。
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/// </summary>
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public class MainWindowViewModel : INotifyPropertyChanged
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{
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#region --- 构造函数 ---
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/// <summary>
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/// 初始化 MainWindowViewModel 的新实例。
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/// </summary>
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public MainWindowViewModel()
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{
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#region 窗体控制命令
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// 最小化窗口控制命令
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MinimizeCommand = new RelayCommand<Window>(win =>
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{
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if (win != null)
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{
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win.WindowState = WindowState.Minimized;
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}
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});
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// 最大化、还原命令
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ToggleMaximizeCommand = new RelayCommand<Window>(win =>
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{
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if (win == null) return;
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if (win.WindowState == WindowState.Maximized)
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{
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win.WindowState = WindowState.Normal;
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MaxButtonContent = "⬜";
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}
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else
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{
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win.WindowState = WindowState.Maximized;
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MaxButtonContent = "❐";
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}
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});
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// 关闭应用程序命令
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CloseCommand = new RelayCommand<Window>(win =>
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{
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App.ShutdownApp();
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});
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// 窗体置顶
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ToggleTopMostCommand = new RelayCommand<object>(_ => IsTopMost = !IsTopMost);
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#endregion
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#region 其它控制命令
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// 向导功能命令
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OpenWizardCommand = new RelayCommand<object>(_ =>
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{
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var wizardVM = new WizardClientsViewModel();
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ShowOverlay(wizardVM);
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});
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// 更换主题命令
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SwitchThemeCommand = new RelayCommand<string>(themeName =>
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{
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if (!string.IsNullOrEmpty(themeName))
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ThemeManager.SetTheme(themeName);
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});
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#endregion
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#region 订阅事件
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// 订阅事件
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AppGlobal.OnRequestAddCamera += HandleAddRequest; // 新增
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AppGlobal.OnRequestEditCamera += HandleEditRequest; // 编辑
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AppGlobal.OnRequestDeleteCamera += HandleDeleteRequest; // 删除
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AppGlobal.OnRequestPtzCamera += HandlePtzRequest; // 云台
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AppGlobal.OnRequestImgProc += HandleImgProcRequest; //订阅图像处理请求
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AppGlobal.OnRequestSubscription += ShowSubscriptionPanel; // 订阅图像处理请求
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#endregion
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// 打开或折叠日志面板
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ToggleLogPanelCommand = new RelayCommand<object>(_ => IsLogPanelExpanded = !IsLogPanelExpanded);
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// 初始化子 ViewModel
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DiagnosticVM = new ServiceNodesViewModel();
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MainContent = new VideoWallViewModel();
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// 启动异步初始化流程
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_ = InitializeAsync();
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}
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#endregion
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#region --- 事件处理 ---
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#region HandleAddRequest
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/// <summary>
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/// 处理添加请求
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/// </summary>
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public void HandleAddRequest()
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{
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// 1. 创建一个新的、空白的 DTO，并提供一些合理的默认值以提升用户体验
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var newDto = new CameraEditInfo
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{
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Id = 0, // 0 表示新增
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Name = "新摄像头",
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IpAddress = "192.168.1.64",
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Brand = 1, // 默认为海康(1) 或你想要的默认值
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Port = 8000,
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Username = "admin",
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Password = "abcd1234",
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ChannelIndex = 1,
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StreamType = 0, // 主码流
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EnhanceImage = false,
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AllowCompress = true,
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};
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// 2. 创建用于编辑的 ViewModel
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var editVm = new CameraEditViewModel(newDto);
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// 3. 监听编辑窗口的关闭请求，以便在操作完成后进行清理和刷新
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editVm.RequestClose += (isSaved, data) =>
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{
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CurrentRightPanelViewModel = null;
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if (isSaved)
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{
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System.Diagnostics.Debug.WriteLine("新增成功，刷新列表...");
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AppGlobal.RequestRefresh();
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}
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};
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// 4. 在右侧面板中显示编辑界面
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CurrentRightPanelViewModel = editVm;
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}
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#endregion
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#region HandleEditRequest
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/// <summary>
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/// 处理编辑请求：调用 Repository 获取数据
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/// </summary>
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private async void HandleEditRequest(WebApiCameraModel listModel)
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{
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if (listModel == null) return;
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try
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{
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// 1. 调用 API 客户端获取该摄像头的完整详细信息
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var editModel = await ApiClient.Instance.Cameras.GetCameraDetailsAsync(listModel.Id);
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if (editModel == null)
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{
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System.Diagnostics.Debug.WriteLine("获取设备详情失败 (Repository返回null)");
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return;
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}
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// 2. 创建用于编辑的 ViewModel
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var editVm = new CameraEditViewModel(editModel);
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// 3. 监听编辑窗口的关闭请求
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editVm.RequestClose += (isSaved, newConfig) =>
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{
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CurrentRightPanelViewModel = null;
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if (isSaved && newConfig != null)
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{
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// 这里以后可以调用 Update 方法
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System.Diagnostics.Debug.WriteLine($"保存成功: {newConfig.Name}");
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AppGlobal.RequestRefresh();
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}
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};
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// 4. 在右侧面板中显示编辑界面
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CurrentRightPanelViewModel = editVm;
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}
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catch (Exception ex)
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{
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System.Diagnostics.Debug.WriteLine($"HandleEditRequest 异常: {ex.Message}");
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}
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}
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#endregion
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#region HandleDeleteRequest
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/// <summary>
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/// 处理删除请求
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/// </summary>
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private async void HandleDeleteRequest(WebApiCameraModel camera)
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{
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if (camera == null) return;
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// 1. 弹窗确认 (防止误删)
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var result = MessageBox.Show(
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$"确定要删除摄像头 \"{camera.Name}\" 吗？\n此操作不可恢复。",
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"确认删除",
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MessageBoxButton.YesNo,
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MessageBoxImage.Warning);
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if (result != MessageBoxResult.Yes) return;
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bool success = await ApiClient.Instance.Cameras.DeleteCameraAsync(camera.Id);
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if (success)
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{
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// 3. 成功后刷新列表
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System.Diagnostics.Debug.WriteLine($"删除 {camera.Name} 成功，刷新列表...");
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AppGlobal.RequestRefresh();
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}
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else
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{
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MessageBox.Show("删除失败，请检查网络或日志。", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
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}
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}
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#endregion
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#region HandlePtzRequest (新增的处理逻辑)
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/// <summary>
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/// [新增] 处理云台控制请求
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/// </summary>
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private void HandlePtzRequest(WebApiCameraModel camera)
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{
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if (camera == null) return;
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try
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{
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// 1. 创建云台控制的 ViewModel
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var ptzVm = new CameraPtzViewModel(camera);
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// 2. 监听关闭事件 (以便点击面板上的关闭按钮时，能收起右侧面板)
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// 注意：我们需要在 CameraPtzViewModel 中定义这个 RequestClose 事件
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ptzVm.RequestClose += () =>
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{
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CurrentRightPanelViewModel = null;
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};
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// 3. 将右侧面板的内容切换为 云台控制
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CurrentRightPanelViewModel = ptzVm;
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}
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catch (Exception ex)
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{
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System.Diagnostics.Debug.WriteLine($"打开云台失败: {ex.Message}");
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}
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}
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#endregion
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private async void HandleImgProcRequest(WebApiCameraModel camera)
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{
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if (camera == null) return;
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try
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{
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// 获取详情 (因为列表模型可能不包含 TargetResolution 等深层字段)
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var detailDto = await ApiClient.Instance.Cameras.GetCameraDetailsAsync(camera.Id);
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if (detailDto == null) return;
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// 创建 VM
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var vm = new CameraImgProcViewModel(camera, detailDto);
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// 处理关闭回调
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vm.RequestClose += () => CurrentRightPanelViewModel = null;
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CurrentRightPanelViewModel = vm;
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}
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catch (Exception ex)
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{
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System.Diagnostics.Debug.WriteLine($"打开图像处理失败: {ex.Message}");
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}
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}
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// 2. 添加处理方法 (仿照 HandlePtzRequest 写法)
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private void ShowSubscriptionPanel(WebApiCameraModel camera)
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{
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if (camera == null) return;
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try
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{
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// A. 复用模式：只创建 ViewModel
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var vm = new CameraImageSubscriptionViewModels(camera);
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// B. 复用关闭逻辑：当子页面请求关闭时，清空当前面板对象
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vm.RequestClose += () => CurrentRightPanelViewModel = null;
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// C. 复用显示通道：直接赋值，UI 会自动更新
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CurrentRightPanelViewModel = vm;
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}
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catch (Exception ex)
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{
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System.Diagnostics.Debug.WriteLine($"打开订阅面板失败: {ex.Message}");
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}
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}
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#endregion
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#region --- 通用右侧面板控制 ---
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// 这里的类型是 object (或 INotifyPropertyChanged)
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// 它可以存放 CameraEditViewModel，也可以存放 LogViewModel, SettingsViewModel 等
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private object? _currentRightPanelViewModel;
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public object? CurrentRightPanelViewModel
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{
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get => _currentRightPanelViewModel;
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set
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{
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_currentRightPanelViewModel = value;
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OnPropertyChanged();
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// 每次内容变了，通知 Visibility 属性也更新一下
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OnPropertyChanged(nameof(IsRightPanelVisible));
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}
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}
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// 界面绑定的可见性：只要 Content 不为空，就显示面板
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public bool IsRightPanelVisible => _currentRightPanelViewModel != null;
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#endregion
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#region --- 命令 (Commands) ---
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/// <summary>
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/// 获取最小化窗口的命令。
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/// </summary>
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public ICommand MinimizeCommand { get; }
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/// <summary>
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/// 获取切换窗口最大化/还原状态的命令。
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/// </summary>
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public ICommand ToggleMaximizeCommand { get; }
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/// <summary>
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/// 获取关闭应用程序的命令。
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/// </summary>
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public ICommand CloseCommand { get; }
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/// <summary>
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/// 获取打开客户端配置向导的命令。
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/// </summary>
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public ICommand OpenWizardCommand { get; }
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/// <summary>
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/// 获取根据名称切换主题的命令。
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/// </summary>
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public ICommand SwitchThemeCommand { get; }
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/// <summary>
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/// 获取切换窗口置顶状态的命令。
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/// </summary>
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public ICommand ToggleTopMostCommand { get; }
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/// <summary>
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/// 获取展开或折叠日志面板的命令。
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/// </summary>
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public ICommand ToggleLogPanelCommand { get; }
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#endregion
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#region --- 属性 (Properties) ---
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private string _maxButtonContent = "⬜";
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/// <summary>
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/// 获取或设置最大化/还原按钮的显示内容。
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/// </summary>
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public string MaxButtonContent
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{
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get => _maxButtonContent;
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set { _maxButtonContent = value; OnPropertyChanged(); }
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}
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private bool _isTopMost;
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/// <summary>
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/// 获取或设置一个值，该值指示窗口是否应始终显示在其他窗口之上。
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/// </summary>
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public bool IsTopMost
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{
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get => _isTopMost;
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set
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{
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if (_isTopMost != value)
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{
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_isTopMost = value;
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OnPropertyChanged(nameof(IsTopMost));
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OnPropertyChanged(nameof(TopMostTooltip));
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}
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}
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}
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/// <summary>
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/// 获取用于窗口置顶按钮的动态工具提示文本。
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/// </summary>
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public string TopMostTooltip => IsTopMost ? "取消置顶" : "窗口置顶";
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private bool _isLogPanelExpanded = true;
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/// <summary>
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/// 获取或设置一个值，该值指示日志面板是否展开。
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/// </summary>
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public bool IsLogPanelExpanded
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{
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get => _isLogPanelExpanded;
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set
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{
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if (_isLogPanelExpanded != value)
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{
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_isLogPanelExpanded = value;
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OnPropertyChanged(nameof(IsLogPanelExpanded));
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}
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}
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}
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/// <summary>
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/// 获取用于服务节点诊断面板的 ViewModel。
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/// </summary>
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public ServiceNodesViewModel DiagnosticVM { get; }
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#endregion
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#region --- 蒙板/覆盖层管理 ---
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private bool _isOverlayVisible;
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/// <summary>
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/// 获取或设置全局蒙板的可见性。
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/// </summary>
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public bool IsOverlayVisible
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{
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get => _isOverlayVisible;
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set { _isOverlayVisible = value; OnPropertyChanged(); }
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}
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private object? _overlayContent;
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/// <summary>
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/// 获取或设置蒙板内显示的内容（一个子 ViewModel）。
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/// </summary>
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public object? OverlayContent
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{
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get => _overlayContent;
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set { _overlayContent = value; OnPropertyChanged(); }
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}
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/// <summary>
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/// 显示一个带有指定内容的全局蒙板。
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/// </summary>
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/// <param name="contentViewModel">要在蒙板中显示的子 ViewModel。</param>
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public void ShowOverlay(object contentViewModel)
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{
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if (contentViewModel == null) return;
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if (contentViewModel is IOverlayClosable closable)
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{
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closable.RequestClose += () =>
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{
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IsOverlayVisible = false;
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OverlayContent = null;
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};
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}
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OverlayContent = contentViewModel;
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IsOverlayVisible = true;
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}
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#endregion
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#region --- 辅助方法 ---
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/// <summary>
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/// 执行应用程序的异步初始化逻辑。
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/// </summary>
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private async Task InitializeAsync()
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{
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await Task.Delay(500);
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if (CheckIfNeedWizard())
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{
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var wizardVM = new WizardClientsViewModel();
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ShowOverlay(wizardVM);
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}
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}
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/// <summary>
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/// 检查是否需要在启动时显示设置向导。
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/// </summary>
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private bool CheckIfNeedWizard()
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{
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return true;
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}
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#endregion
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#region --- INotifyPropertyChanged 实现 ---
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/// <summary>
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/// 当属性值更改时发生。
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/// </summary>
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public event PropertyChangedEventHandler? PropertyChanged;
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/// <summary>
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/// 引发 PropertyChanged 事件，通知UI更新。
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/// </summary>
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protected void OnPropertyChanged([System.Runtime.CompilerServices.CallerMemberName] string name = "")
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
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}
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#endregion
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private object _mainContent;
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public object MainContent
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{
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get => _mainContent;
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set { _mainContent = value; OnPropertyChanged(); }
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}
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}
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} |