fix: handle login window shutdown

Txgy.EWS.Client.Common/Helpers/VisualHost.cs

@@ -28,19 +28,54 @@ namespace Txgy.EWS.Client.Common.Helpers
         //添加Visual
         public void AddVisual(Visual visual)
         {
-            visuals.Add(visual);
+            InvokeOnDispatcher(() =>
+            {
+                if (visual == null)
+                {
+                    return;
+                }
 
-            Application.Current.Dispatcher.Invoke(() => base.AddVisualChild(visual));
-            Application.Current.Dispatcher.Invoke(() => base.AddLogicalChild(visual));
+                visuals.Add(visual);
+                base.AddVisualChild(visual);
+                base.AddLogicalChild(visual);
+            });
         }
 
         //删除Visual
         public void RemoveVisual(Visual visual)
         {
-            visuals.Remove(visual);
+            InvokeOnDispatcher(() =>
+            {
+                if (visual == null)
+                {
+                    return;
+                }
+
+                if (!visuals.Remove(visual))
+                {
+                    return;
+                }
+
+                base.RemoveVisualChild(visual);
+                base.RemoveLogicalChild(visual);
+            });
+        }
+
+        private void InvokeOnDispatcher(Action action)
+        {
+            var dispatcher = Dispatcher;
+            if (dispatcher == null || dispatcher.HasShutdownStarted || dispatcher.HasShutdownFinished)
+            {
+                return;
+            }
+
+            if (dispatcher.CheckAccess())
+            {
+                action();
+                return;
+            }
 
-            Application.Current.Dispatcher.Invoke(()=>base.RemoveVisualChild(visual));
-            Application.Current.Dispatcher.Invoke(() => base.RemoveLogicalChild(visual));
+            dispatcher.Invoke(action);
         }
 
         //命中测试

Txgy.EWS.Client.PageModule/ViewModels/EarlyWarningViewModel.cs

@@ -611,7 +611,7 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
             //InitEventList();
             this._ea.GetEvent<UpdateEventFrequencyEvent>().Subscribe(u =>
             {
-                Application.Current.Dispatcher.Invoke(new System.Action(() =>
+                InvokeOnDispatcher(() =>
                 {
                     ListEventFre.Add(new ObservableValue(u));
                     EventFrequencyCount = u;
@@ -621,12 +621,12 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
                     }
                     EventFreLabels.Add(DateTime.Now.ToString("HH:mm"));
                     EventFreMaxY = (int)(ListEventFre.Max(le => le.Value) + 4);
-                }));
+                });
             });
             //最后预警事件
             this._ea.GetEvent<UpdateLastAlarmEvent>().Subscribe(u =>
             {
-                Application.Current.Dispatcher.Invoke(new System.Action(() =>
+                InvokeOnDispatcher(() =>
                 {
                     LastAlarmEventEnergy = u.Energy;
                     ListEnergy.Add(new ObservableValue(u.Energy));
@@ -639,7 +639,7 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
                     //int domainFreq = rnd.Next(15, 60);
                     //LastAlarmEventDominFreq = domainFreq;
                     //ListDominantFreq.Add(new ObservableValue(domainFreq));
-                }));
+                });
             });
             //事件主频
             this._ea.GetEvent<UpdateEventDominFreqMessage>().Subscribe(u =>
@@ -664,7 +664,7 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
                     //从接收事件列表中删除超过指定时间范围的数据
                     var timeoutReceivedEvents = ReceviedEvents.Where(re =>
                     (DateTime.Now - DateTime.Parse(re.EventTime)).TotalHours >= GlobalConfig.DataLookbackHours).ToArray();
-                    _dispatcher.Invoke(new System.Action(() =>
+                    InvokeOnDispatcher(() =>
                     {
                         if (timeoutReceivedEvents.Length > 0)
                         {
@@ -674,12 +674,12 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
                                 ReceviedEvents.Remove(dg);
                             }
                         }
-                    }));
+                    });
                 }
-                _dispatcher.Invoke(new System.Action(() =>
+                InvokeOnDispatcher(() =>
                 {
                     ReceviedEvents.Insert(0, gier);
-                }));
+                });
 
                 //ReceivedEvents = new ObservableCollection<GridItemEventResult>();
                 //AlarmEvents = new ObservableCollection<GridItemEventResult>();
@@ -692,7 +692,7 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
                 {
                     var timeoutAlarmEvents = AlarmEvents.Where(re =>
                     (DateTime.Now - DateTime.Parse(re.EventTime)).TotalHours >= GlobalConfig.DataLookbackHours).ToArray();
-                    _dispatcher.Invoke(new System.Action(() =>
+                    InvokeOnDispatcher(() =>
                     {
                         if (timeoutAlarmEvents.Length > 0)
                         {
@@ -702,18 +702,34 @@ namespace Txgy.EWS.Client.PageModule.ViewModels
                                 AlarmEvents.Remove(dg);
                             }
                         }
-                    }));
+                    });
                 }
-                _dispatcher.Invoke(new System.Action(() =>
+                InvokeOnDispatcher(() =>
                 {
                     AlarmEvents.Insert(0, gier);
-                }));
+                });
 
                 //ReceivedEvents = new ObservableCollection<GridItemEventResult>();
                 //AlarmEvents = new ObservableCollection<GridItemEventResult>();
             });          
         }
 
+        private void InvokeOnDispatcher(System.Action action)
+        {
+            if (action == null || _dispatcher == null || _dispatcher.HasShutdownStarted || _dispatcher.HasShutdownFinished)
+            {
+                return;
+            }
+
+            if (_dispatcher.CheckAccess())
+            {
+                action();
+                return;
+            }
+
+            _dispatcher.Invoke(action);
+        }
+
         private void ClearWarningData()
         {
             AlarmEvents.Clear();

Txgy.EWS.Client.Start/App.xaml.cs

@@ -32,6 +32,8 @@ namespace Txgy.EWS.Client.Start
     /// </summary>
     public partial class App : PrismApplication
     {
+        private bool _loginSucceeded;
+
         public App()
         {
             // 日志Log4Net初始化
@@ -62,13 +64,25 @@ namespace Txgy.EWS.Client.Start
         {
             var config = BusinessConfigManager.Current;
             GlobalConfig.InitializeRuntimeSettings(config.Runtime);
+            GlobalConfig.ReadConfig();
             //Debug.WriteLine(GlobalConfig.LoadDataTimeLenMins);
             //Debug.WriteLine(GlobalConfig.DataCacheTimeLenMins);
+            _loginSucceeded = Container.Resolve<LoginView>().ShowDialog() == true;
+            if (!_loginSucceeded)
+            {
+                Shutdown();
+                return null;
+            }
+
             return Container.Resolve<MainWindow>();
         }
         protected override void InitializeShell(Window shell)
         {
-            GlobalConfig.ReadConfig();
+            if (!_loginSucceeded || shell == null)
+            {
+                return;
+            }
+
             //if (GlobalData.IsDesign)
             //{                
             //    base.InitializeShell(shell);
@@ -76,17 +90,8 @@ namespace Txgy.EWS.Client.Start
             //else
             {
                 //GlobalConfig.ReadConfig();
-                // 通信容器来获取对象  可以进行相关对象的注入
-                if (Container.Resolve<LoginView>().ShowDialog() == false)
-                {
-                    //GlobalConfig.ReadConfig();
-                    Application.Current?.Shutdown();
-                }
-                else
-                {
-                    //CommonLogHelper.Debug("====Start=====>");
-                    base.InitializeShell(shell);
-                }
+                //CommonLogHelper.Debug("====Start=====>");
+                base.InitializeShell(shell);
             }
         }
         protected override void RegisterTypes(IContainerRegistry containerRegistry)

Txgy.EWS.Client.Start/Views/LoginView.xaml.cs

@@ -45,7 +45,7 @@ namespace Txgy.EWS.Client.Start.Views
 
         private void Button_Click(object sender, RoutedEventArgs e)
         {
-            this.Close();
+            this.DialogResult = false;
         }
     }
 }