feat: 首次完成测试

DownKyi/ViewModels/MainWindowViewModel.cs

@@ -0,0 +1,101 @@
+using System.Threading;
+using Avalonia.Threading;
+using DownKyi.Events;
+using Prism.Commands;
+using Prism.Events;
+using Prism.Mvvm;
+using Prism.Regions;
+
+namespace DownKyi.ViewModels;
+
+public class MainWindowViewModel : BindableBase
+{
+    private readonly IEventAggregator _eventAggregator;
+    private readonly IRegionManager _regionManager;
+
+    private bool _messageVisibility = false;
+    private string? _oldMessage;
+
+    public bool MessageVisibility
+    {
+        get => _messageVisibility;
+        set => SetProperty(ref _messageVisibility, value);
+    }
+
+    private string? _message;
+
+    public string? Message
+    {
+        get => _message;
+        set => SetProperty(ref _message, value);
+    }
+
+
+    // 登录事件
+    private DelegateCommand? _loginCommand;
+    public DelegateCommand LoginCommand => _loginCommand ??= new DelegateCommand(ExecuteLogin);
+
+    public DelegateCommand? LoadedCommand { get; }
+
+    public void ExecuteLogin()
+    {
+        NavigationParam parameter = new NavigationParam
+        {
+            ViewName = ViewLoginViewModel.Tag,
+            ParentViewName = null,
+            Parameter = null
+        };
+        _eventAggregator.GetEvent<NavigationEvent>().Publish(parameter);
+    }
+
+    public MainWindowViewModel(IRegionManager regionManager, IEventAggregator eventAggregator)
+    {
+        _regionManager = regionManager;
+        _eventAggregator = eventAggregator;
+
+        #region MyRegion
+
+        _eventAggregator.GetEvent<NavigationEvent>().Subscribe(view =>
+        {
+            var param = new NavigationParameters
+            {
+                { "Parent", view.ParentViewName },
+                { "Parameter", view.Parameter }
+            };
+            regionManager.RequestNavigate("ContentRegion", view.ViewName, param);
+        });
+
+        // 订阅消息发送事件
+        _eventAggregator.GetEvent<MessageEvent>().Subscribe(message =>
+        {
+            MessageVisibility = true;
+
+            _oldMessage = Message;
+            Message = message;
+            var sleep = 2000;
+            if (_oldMessage == Message)
+            {
+                sleep = 1500;
+            }
+
+            Thread.Sleep(sleep);
+
+            MessageVisibility = false;
+        }, ThreadOption.BackgroundThread);
+
+        #endregion
+
+
+        LoadedCommand = new DelegateCommand(() =>
+        {
+            var param = new NavigationParameters
+            {
+                { "Parent", "" },
+                { "Parameter", "start" }
+            };
+            regionManager.RequestNavigate("ContentRegion", ViewIndexViewModel.Tag, param);
+        });
+
+        Dispatcher.UIThread.InvokeAsync(() => { LoadedCommand.Execute(); });
+    }
+}