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feat: simplify VM initialization.

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This commit is contained in:
Zhang Dian
2025-06-04 17:12:54 +08:00
parent 5d5c439cb0
commit 447629170b
3 changed files with 12 additions and 19 deletions
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9
demo/Ursa.Demo/Pages/NotificationDemo.axaml.cs
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@@ -7,22 +7,17 @@ namespace Ursa.Demo.Pages;
public partial class NotificationDemo : UserControl
{
private NotificationDemoViewModel _viewModel;
public NotificationDemo()
{
InitializeComponent();
_viewModel = new NotificationDemoViewModel();
DataContext = _viewModel;
}
protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
{
base.OnAttachedToVisualTree(e);
if (DataContext is not NotificationDemoViewModel vm) return;
var topLevel = TopLevel.GetTopLevel(this);
if (topLevel is null)
return;
_viewModel.NotificationManager = WindowNotificationManager.TryGetNotificationManager(topLevel, out var manager)
vm.NotificationManager = WindowNotificationManager.TryGetNotificationManager(topLevel, out var manager)
? manager
: new WindowNotificationManager(topLevel);
}

11
demo/Ursa.Demo/Pages/PopConfirmDemo.axaml.cs
View File

@@ -1,6 +1,5 @@
using Avalonia;
using Avalonia.Controls;
using Avalonia.Markup.Xaml;
using Ursa.Controls;
using Ursa.Demo.ViewModels;
@@ -16,10 +15,10 @@ public partial class PopConfirmDemo : UserControl
protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
{
base.OnAttachedToVisualTree(e);
if (this.DataContext is not PopConfirmDemoViewModel vm) return;
var manager = WindowToastManager.TryGetToastManager(TopLevel.GetTopLevel(this), out var m)
? m
: new WindowToastManager(TopLevel.GetTopLevel(this));
vm.ToastManager = manager;
if (DataContext is not PopConfirmDemoViewModel vm) return;
var topLevel = TopLevel.GetTopLevel(this);
vm.ToastManager = WindowToastManager.TryGetToastManager(topLevel, out var manager)
? manager
: new WindowToastManager(topLevel);
}
}

11
demo/Ursa.Demo/Pages/ToastDemo.axaml.cs
View File

@@ -7,25 +7,24 @@ namespace Ursa.Demo.Pages;
public partial class ToastDemo : UserControl
{
private ToastDemoViewModel _viewModel;
private ToastDemoViewModel? _viewModel;
public ToastDemo()
{
InitializeComponent();
_viewModel = new ToastDemoViewModel();
DataContext = _viewModel;
}
protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
{
base.OnAttachedToVisualTree(e);
var topLevel = TopLevel.GetTopLevel(this);
_viewModel.ToastManager = new WindowToastManager(topLevel) { MaxItems = 3 };
if (DataContext is not ToastDemoViewModel vm) return;
_viewModel = vm;
_viewModel.ToastManager = new WindowToastManager(TopLevel.GetTopLevel(this)) { MaxItems = 3 };
}
protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e)
{
base.OnDetachedFromVisualTree(e);
_viewModel.ToastManager?.Uninstall();
_viewModel?.ToastManager?.Uninstall();
}
}