87 lines
3.0 KiB
C#
87 lines
3.0 KiB
C#
using DMS.WPF.Interfaces;
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using DMS.WPF.ViewModels;
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using DMS.WPF.ViewModels.Items;
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using Microsoft.Extensions.DependencyInjection;
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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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private readonly INotificationService _notificationService;
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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,INotificationService notificationService)
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{
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_serviceProvider = serviceProvider;
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_notificationService = notificationService;
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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(MenuItemViewModel menu)
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{
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if (string.IsNullOrEmpty(menu.TargetViewKey))
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{
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return;
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}
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var mainViewModel = App.Current.Services.GetRequiredService<MainViewModel>();
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var viewModel = GetViewModelByKey(menu.TargetViewKey);
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if (viewModel == null)
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{
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_notificationService.ShowError($"切换界面失败，没有找到界面：{menu.TargetViewKey}");
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return;
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}
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if (viewModel is INavigatable navigatableViewModel)
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{
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await navigatableViewModel.OnNavigatedToAsync(menu);
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}
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mainViewModel.CurrentViewModel = viewModel;
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}
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private ViewModelBase GetViewModelByKey(string key)
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{
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try
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{
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switch (key)
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{
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case "HomeView":
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return App.Current.Services.GetRequiredService<HomeViewModel>();
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case "DevicesView":
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return App.Current.Services.GetRequiredService<DevicesViewModel>();
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case "DeviceDetailView":
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return App.Current.Services.GetRequiredService<DeviceDetailViewModel>();
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case "DataTransformView":
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return App.Current.Services.GetRequiredService<DataTransformViewModel>();
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case "VariableTableView":
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return App.Current.Services.GetRequiredService<VariableTableViewModel>();
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case "LogHistoryView":
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return App.Current.Services.GetRequiredService<LogHistoryViewModel>();
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case "MqttsView":
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return App.Current.Services.GetRequiredService<MqttsViewModel>();
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case "MqttServerDetailView":
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return App.Current.Services.GetRequiredService<MqttServerDetailViewModel>();
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case "SettingView":
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return App.Current.Services.GetRequiredService<SettingViewModel>();
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default:
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return null;
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}
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}
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catch (Exception e)
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{
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_notificationService.ShowError($"切换界面失败，获取：{key}对应的ViewModel时发生了错误：{e.Message}");
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throw;
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}
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}
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} |