80 lines
2.6 KiB
C#
80 lines
2.6 KiB
C#
// 文件: DMS.WPF/Services/NavigationService.cs
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using DMS.WPF.ViewModels;
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using Microsoft.Extensions.DependencyInjection;
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using System;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using System.Windows;
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using DMS.ViewModels;
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using DMS.WPF.Views;
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namespace DMS.WPF.Services;
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/// <summary>
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/// INavigationService 的实现，负责解析ViewModel并处理参数传递。
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/// </summary>
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public class NavigationService : INavigationService
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{
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private readonly IServiceProvider _serviceProvider;
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/// <summary>
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/// 构造函数。
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/// </summary>
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public NavigationService(IServiceProvider serviceProvider)
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{
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_serviceProvider = serviceProvider;
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}
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/// <summary>
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/// 导航到指定键的视图，并传递参数。
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/// </summary>
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public async Task NavigateToAsync(string viewKey, object parameter = null)
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{
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if (string.IsNullOrEmpty(viewKey))
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{
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return;
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}
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var mainViewModel = _serviceProvider.GetRequiredService<MainViewModel>();
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var viewModelType = GetViewModelTypeByKey(viewKey);
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var viewModel = _serviceProvider.GetRequiredService(viewModelType) as ViewModelBase;
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if (viewModel is INavigatable navigatableViewModel)
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{
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await navigatableViewModel.OnNavigatedToAsync(parameter);
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}
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mainViewModel.CurrentViewModel = viewModel;
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}
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/// <summary>
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/// 显示主窗口。
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/// </summary>
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public Task ShowMainWindowAsync()
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{
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return App.Current.Dispatcher.InvokeAsync(() =>
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{
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var mainView = _serviceProvider.GetRequiredService<MainView>();
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// 将 MainView 设置为新的主窗口
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App.Current.MainWindow = mainView;
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mainView.Show();
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})
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.Task;
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}
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private Type GetViewModelTypeByKey(string key)
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{
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return key switch
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{
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"HomeView" => typeof(HomeViewModel),
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"DevicesView" => typeof(DevicesViewModel),
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"DeviceDetailView" => typeof(DeviceDetailViewModel),
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"VariableTableView" => typeof(VariableTableViewModel),
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"MqttsView" => typeof(MqttsViewModel),
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"MqttServerDetailView" => typeof(MqttServerDetailViewModel),
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"SettingView" => typeof(SettingViewModel),
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_ => throw new KeyNotFoundException($"未找到与键 '{key}' 关联的视图模型类型。请检查 NavigationService 的映射配置。")
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};
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}
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} |