Implemented Delete menu item in file item's context menu.

Progrart/Controls/FileItem.axaml

@@ -34,7 +34,7 @@
 						<MenuItem Header="_Move to" Name="MoveToMenuItem"/>
 						<!--<MenuItem Header="_Paste"/>-->
 						<Separator/>
-						<MenuItem Header="_Delete"/>
+						<MenuItem Header="_Delete" Name="DeleteMenuItem" Click="DeleteMenuItem_Click"/>
 					</ContextMenu>
 				</Button.ContextMenu>
 				<Grid>

Progrart/Controls/FileItem.axaml.cs

@@ -282,4 +282,20 @@ public partial class FileItem : UserControl
 			}
 		}
 	}
+
+	private async void DeleteMenuItem_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+	{
+		var content = new ConfirmationDialog("Are you sure?", "This operation cannot be undone.");
+		content.onOK = async () =>
+		{
+			if (currentItem is not null)
+				await currentItem.DeleteAsync();
+			if (this.Parent is StackPanel panel)
+			{
+				panel.Children.Remove(this);
+			}
+			return false;
+		};
+		await DialogHost.Show(content);
+	}
 }

Progrart/Dialogs/CloseConfirmationDialog.axaml

@@ -8,7 +8,7 @@
 		<TextBlock FontSize="18" Name="TitleBlock" TextWrapping="Wrap">
 			Unsaved Changes
 		</TextBlock>
-		<TextBlock Name="MssageBlock" TextWrapping="Wrap">
+		<TextBlock Name="MessageBlock" TextWrapping="Wrap">
 			Save all files or discard changes?
 		</TextBlock>
 		<Grid>

Progrart/Dialogs/ConfirmationDialog.axaml

@@ -0,0 +1,23 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="Progrart.Dialogs.ConfirmationDialog">
+    	<StackPanel>
+		<TextBlock FontSize="18" Name="TitleBlock" TextWrapping="Wrap">
+			Title
+		</TextBlock>
+		<TextBlock Name="MessageBlock" TextWrapping="Wrap">
+			Content
+		</TextBlock>
+		<Grid>
+			<Grid.ColumnDefinitions>
+				<ColumnDefinition/>
+				<ColumnDefinition/>
+			</Grid.ColumnDefinitions>
+			<Button HorizontalAlignment="Stretch" HorizontalContentAlignment="Center" Classes="accent" Name="OKBtn" Content="OK"/>
+			<Button HorizontalAlignment="Stretch" HorizontalContentAlignment="Center" Name="CancelBtn" Grid.Column="2" Content="Cancel"/>
+		</Grid>
+	</StackPanel>
+</UserControl>

Progrart/Dialogs/ConfirmationDialog.axaml.cs

@@ -0,0 +1,60 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using DialogHostAvalonia;
+using System;
+using System.Threading.Tasks;
+
+namespace Progrart.Dialogs;
+
+public partial class ConfirmationDialog : UserControl
+{
+	public Func<Task<bool>>? onOK = null;
+	public Func<bool>? onCancel = null;
+	public ConfirmationDialog()
+	{
+		InitializeComponent();
+		SetupEvents();
+	}
+	public ConfirmationDialog(string title,string message)
+	{
+		InitializeComponent();
+		SetupEvents();
+		this.TitleBlock.Text = title;
+		this.MessageBlock.Text = message;
+	}
+	void SetupEvents()
+	{
+		OKBtn.Click += OKBtn_Click;
+		CancelBtn.Click += CancelBtn_Click;
+	}
+	private void CancelBtn_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+	{
+		Cancel();
+	}
+
+	private void Cancel()
+	{
+		if (!(onCancel?.Invoke()) ?? true)
+		{
+			DialogHost.Close(null);
+		}
+	}
+	private async Task Confirmed()
+	{
+		if (onOK is not null)
+		{
+			if (!await onOK())
+			{
+				DialogHost.Close(null);
+			}
+		}
+		else
+			DialogHost.Close(null);
+	}
+
+	private async void OKBtn_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+	{
+		await Confirmed();
+	}
+}

Progrart/Views/MainView.axaml.cs

@@ -88,7 +88,7 @@ public partial class MainView : UserControl
 		};
 		NewFileButton.Click += (_, _) =>
 		{
-			MainTabHost.AddPage(new EditorPage());
+			MainTabHost.AddPage(new ProgrartEditorPage());
 		};
 		AboutItem.Click += (_, _) =>
 		{