Add initial project structure with basic view models, views, and resources

CryptoPortfolio Tracker/Views/MainView.axaml.cs

@@ -0,0 +1,45 @@
+using Avalonia;
+using Avalonia.Controls;
+using CryptoPortfolio_Tracker.ViewModels;
+using System;
+using Avalonia.Controls.Notifications;
+using Ursa.Controls;
+
+namespace CryptoPortfolio_Tracker.Views;
+
+public partial class MainView : NavigationPage
+{
+    public static MainView Current { get; set; } = null!;
+
+    private WindowToastManager _toastManager = null!;
+    
+    public MainView()
+    {
+        InitializeComponent();
+        Current = this;
+    }
+
+    protected override async void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
+    {
+        base.OnAttachedToVisualTree(e);
+        
+        _toastManager = new WindowToastManager(TopLevel.GetTopLevel(this));
+
+        if (CurrentPage == null)
+            await PushAsync(new LoginView()
+            {
+                DataContext = new LoginViewModel()
+            });
+    }
+
+    public void ShowToast(string message, NotificationType type)
+    {
+        _toastManager.Show(
+            content: message,
+            showIcon: true,
+            showClose: true,
+            type: type,
+            expiration: TimeSpan.FromSeconds(3),
+            classes: ["Light"]);
+    }
+}