[TUI] Add GoTo Sector dialog for improved sector navigation

Aaru.Tui/Aaru.Tui.csproj

@@ -19,6 +19,9 @@
     <Compile Update="Views\Windows\HexViewWindow.axaml.cs">
       <DependentUpon>HexViewWindow.axaml</DependentUpon>
     </Compile>
+    <Compile Update="Views\Dialogs\GoToSectorDialog.axaml.cs">
+      <SubType>Code</SubType>
+    </Compile>
   </ItemGroup>
 
   <ItemGroup>

Aaru.Tui/ViewModels/Dialogs/GoToSectorDialogViewModel.cs

@@ -0,0 +1,62 @@
+using System.Windows.Input;
+using Avalonia.Controls;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+
+namespace Aaru.Tui.ViewModels.Dialogs;
+
+public sealed partial class GoToSectorDialogViewModel : ViewModelBase
+{
+    readonly ulong  _maxSector;
+    internal Window _dialog = null!;
+
+    [ObservableProperty]
+    string _errorMessage = string.Empty;
+
+    [ObservableProperty]
+    bool _hasError;
+
+    [ObservableProperty]
+    string _sectorNumber = string.Empty;
+
+    public GoToSectorDialogViewModel(Window dialog, ulong maxSector)
+    {
+        _dialog       = dialog;
+        _maxSector    = maxSector;
+        OkCommand     = new RelayCommand(Ok);
+        CancelCommand = new RelayCommand(Cancel);
+    }
+
+    public ulong? Result { get; private set; }
+
+    public ICommand OkCommand     { get; }
+    public ICommand CancelCommand { get; }
+
+    void Ok()
+    {
+        if(!ulong.TryParse((string?)SectorNumber, out ulong sector))
+        {
+            ErrorMessage = "Please enter a valid number.";
+            HasError     = true;
+
+            return;
+        }
+
+        if(sector > _maxSector)
+        {
+            ErrorMessage = $"Sector number must be less than or equal to {_maxSector}.";
+            HasError     = true;
+
+            return;
+        }
+
+        Result = sector;
+        _dialog.Close(true);
+    }
+
+    void Cancel()
+    {
+        Result = null;
+        _dialog.Close(false);
+    }
+}

Aaru.Tui/ViewModels/Windows/HexViewWindowViewModel.cs

@@ -1,11 +1,13 @@
 using System.Collections.ObjectModel;
 using System.Windows.Input;
 using Aaru.CommonTypes.Interfaces;
+using Aaru.Tui.ViewModels.Dialogs;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
+using GoToSectorDialog = Aaru.Tui.Views.Dialogs.GoToSectorDialog;
 
 namespace Aaru.Tui.ViewModels.Windows;
 
@@ -31,6 +33,7 @@ public sealed partial class HexViewWindowViewModel : ViewModelBase
         BackCommand           = new RelayCommand(Back);
         NextSectorCommand     = new RelayCommand(NextSector);
         PreviousSectorCommand = new RelayCommand(PreviousSector);
+        GoToCommand           = new AsyncRelayCommand(GoToAsync);
 
         _parent        = parent;
         _view          = view;
@@ -44,6 +47,31 @@ public sealed partial class HexViewWindowViewModel : ViewModelBase
     public ICommand ExitCommand           { get; }
     public ICommand NextSectorCommand     { get; }
     public ICommand PreviousSectorCommand { get; }
+    public ICommand GoToCommand           { get; }
+
+    async Task GoToAsync()
+    {
+        var dialog = new GoToSectorDialog
+        {
+            DataContext = new GoToSectorDialogViewModel(null!, _imageFormat.Info.Sectors - 1)
+        };
+
+        // Set the dialog reference after creation
+        ((GoToSectorDialogViewModel)dialog.DataContext!)._dialog = dialog;
+
+        bool? result = await dialog.ShowDialog<bool?>(_view);
+
+        if(result == true)
+        {
+            var viewModel = (GoToSectorDialogViewModel)dialog.DataContext;
+
+            if(viewModel.Result.HasValue)
+            {
+                CurrentSector = viewModel.Result.Value;
+                LoadSector();
+            }
+        }
+    }
 
     void PreviousSector()
     {

Aaru.Tui/Views/Dialogs/GoToSectorDialog.axaml

@@ -0,0 +1,38 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="using:Aaru.Tui.ViewModels.Dialogs"
+        xmlns:brushes="https://github.com/jinek/consolonia"
+        Width="40"
+        Height="8"
+        x:Class="Aaru.Tui.Views.Dialogs.GoToSectorDialog"
+        x:DataType="vm:GoToSectorDialogViewModel"
+        Title="Go to Sector"
+        WindowStartupLocation="CenterScreen"
+        RequestedThemeVariant="Dark"
+        CanResize="False">
+    <Design.DataContext>
+        <vm:GoToSectorDialogViewModel />
+    </Design.DataContext>
+    <Border BorderThickness="1">
+        <Border.BorderBrush>
+            <brushes:LineBrush LineStyle="DoubleLine"
+                               Brush="Blue" />
+        </Border.BorderBrush>
+        <StackPanel>
+            <TextBlock Text="Enter sector number:" />
+            <TextBox Text="{Binding SectorNumber, Mode=OneWay}"
+                     Watermark="Sector number" />
+            <TextBlock Text="{Binding ErrorMessage, Mode=OneWay}"
+                       Foreground="Red"
+                       IsVisible="{Binding HasError, Mode=OneWay}" />
+            <StackPanel Orientation="Horizontal"
+                        HorizontalAlignment="Right"
+                        Spacing="1">
+                <Button Content="OK"
+                        Command="{Binding OkCommand, Mode=OneWay}" />
+                <Button Content="Cancel"
+                        Command="{Binding CancelCommand, Mode=OneWay}" />
+            </StackPanel>
+        </StackPanel>
+    </Border>
+</Window>

Aaru.Tui/Views/Dialogs/GoToSectorDialog.axaml.cs

@@ -0,0 +1,11 @@
+using Avalonia.Controls;
+
+namespace Aaru.Tui.Views.Dialogs;
+
+public partial class GoToSectorDialog : Window
+{
+    public GoToSectorDialog()
+    {
+        InitializeComponent();
+    }
+}