Initial Commit

PortfolioManager/ViewModels/ModelBase.cs

@@ -0,0 +1,60 @@
+using System;
+using System.ComponentModel;
+using System.Diagnostics;
+using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+using Axiom.Utils;
+using Eremex.AvaloniaUI.Controls;
+
+namespace PortfolioManager.ViewModels
+{
+
+    public abstract class ModelBase : INotifyPropertyChanged
+    {
+      public event PropertyChangedEventHandler PropertyChanged;
+
+
+      public Window GetTopLevelWindow()
+      {
+        Window currentWindow = default;
+        if (Avalonia.Application.Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+          currentWindow = desktop.MainWindow;
+        }
+        return currentWindow;
+      }
+
+      public virtual String DisplayName
+      {
+        get;
+        protected set;
+      }
+
+      protected virtual bool ThrowOnInvalidPropertyName
+      {
+          get;
+          private set;
+      }
+
+      protected virtual void OnPropertyChanged(string propertyName)
+      {
+          this.VerifyPropertyName(propertyName);
+          PropertyChangedEventHandler handler = PropertyChanged;
+          if (handler != null)
+          {
+              var e = new PropertyChangedEventArgs(propertyName);
+              handler(this, e);
+          }
+      }
+
+      public void VerifyPropertyName(string propertyName)
+      {
+          if (TypeDescriptor.GetProperties(this)[propertyName] == null)
+          {
+              string message = "Invalid property name: " + propertyName;
+              MDTrace.WriteLine(LogLevel.DEBUG, message);
+              if (this.ThrowOnInvalidPropertyName) throw new Exception(message); else Debug.Fail(message);
+          }
+      }
+  }
+}