[TUI] Add Next Sector command and update hex view for sector navigation

Aaru.Tui/ViewModels/Windows/HexViewWindowViewModel.cs

@@ -12,11 +12,12 @@ namespace Aaru.Tui.ViewModels.Windows;
 public sealed partial class HexViewWindowViewModel : ViewModelBase
 {
     private const int         BYTES_PER_LINE = 16;
-    readonly      ulong       _currentSector;
     readonly      IMediaImage _imageFormat;
     readonly      Window      _parent;
     readonly      Window      _view;
     [ObservableProperty]
+    ulong _currentSector;
+    [ObservableProperty]
     string _filePath;
     [ObservableProperty]
     long _fileSize;
@@ -26,18 +27,31 @@ public sealed partial class HexViewWindowViewModel : ViewModelBase
     internal HexViewWindowViewModel(Window parent, Window view, IMediaImage imageFormat, string filePath,
                                     ulong  currentSector = 0)
     {
-        ExitCommand = new RelayCommand(Exit);
+        ExitCommand       = new RelayCommand(Exit);
-        BackCommand = new RelayCommand(Back);
+        BackCommand       = new RelayCommand(Back);
+        NextSectorCommand = new RelayCommand(NextSector);
 
         _parent        = parent;
         _view          = view;
         _imageFormat   = imageFormat;
         _currentSector = currentSector;
         FilePath       = filePath;
+        LoadSector();
+    }
+
+    public ICommand BackCommand       { get; }
+    public ICommand ExitCommand       { get; }
+    public ICommand NextSectorCommand { get; }
+
+    void NextSector()
+    {
+        if(CurrentSector >= _imageFormat.Info.Sectors - 1) return;
+
+        CurrentSector++;
+
+        LoadSector();
     }
 
-    public ICommand BackCommand { get; }
-    public ICommand ExitCommand { get; }
 
     void Back()
     {
@@ -53,7 +67,9 @@ public sealed partial class HexViewWindowViewModel : ViewModelBase
 
     void LoadSector()
     {
-        _imageFormat.ReadSector(_currentSector, out byte[]? sector);
+        Lines.Clear();
+
+        _imageFormat.ReadSector(CurrentSector, out byte[]? sector);
 
         using var stream = new MemoryStream(sector);
         var       buffer = new byte[BYTES_PER_LINE];
@@ -78,10 +94,7 @@ public sealed partial class HexViewWindowViewModel : ViewModelBase
         }
     }
 
-    public void LoadComplete()
+    public void LoadComplete() {}
-    {
-        LoadSector();
-    }
 }
 
 public sealed class HexViewLine

Aaru.Tui/Views/Windows/HexViewWindow.axaml

@@ -12,6 +12,19 @@
             <MenuItem Header="ESC Back"
                       HotKey="Escape"
                       Command="{Binding BackCommand, Mode=OneWay}" />
+            <MenuItem Header="F1  Help" />
+            <MenuItem Header="F2  Next"
+                      Command="{Binding NextSectorCommand, Mode=OneWay}"
+                      HotKey="F2" />
+            <MenuItem Header="F3  Prev"
+                      Command="{Binding PreviousSectorCommand, Mode=OneWay}"
+                      HotKey="F3" />
+            <MenuItem Header="F4  GoTo"
+                      Command="{Binding GoToCommand, Mode=OneWay}"
+                      HotKey="F4" />
+            <MenuItem Header="F5  Save"
+                      Command="{Binding SaveCommand, Mode=OneWay}"
+                      HotKey="F5" />
             <MenuItem Header="F10 Exit"
                       HotKey="F10"
                       Command="{Binding ExitCommand, Mode=OneWay}" />
@@ -21,7 +34,7 @@
                 <console:LineBrush LineStyle="DoubleLine"
                                    Brush="Blue" />
             </Border.BorderBrush>
-            <Grid RowDefinitions="Auto,Auto,*">
+            <Grid RowDefinitions="Auto,Auto,*,Auto">
                 <TextBlock Grid.Row="0"
                            Foreground="Green"
                            Text="{Binding FilePath, Mode=OneWay}" />
@@ -73,6 +86,13 @@
                         </ItemsControl.ItemTemplate>
                     </ItemsControl>
                 </ScrollViewer>
+                <StackPanel Orientation="Horizontal"
+                            Grid.Row="3">
+                    <TextBlock Foreground="SlateBlue"
+                               Text="Current sector: " />
+                    <TextBlock Foreground="Lime"
+                               Text="{Binding CurrentSector, Mode=OneWay}" />
+                </StackPanel>
             </Grid>
         </Border>
     </DockPanel>