Added "About" dialog

Corrected handling of unassigned shortcuts
Modified toolbar sorting

ZXBStudio/Classes/ZXKeybMapper.cs

@@ -69,7 +69,7 @@ public static ZXKeybMapperSource[] GetKeybCommands()
             if (!mappings.ContainsKey(SourceId))
                 return null;
 
-            return mappings[SourceId].FirstOrDefault(m => m.Key == Key && m.Modifiers == Modifiers)?.CommandId;
+            return mappings[SourceId].FirstOrDefault(m => m.Key != Key.None && m.Key == Key && m.Modifiers == Modifiers)?.CommandId;
         }
         public static bool UpdateCommands(Guid SourceId, ZXKeybCommand[] Commands)
         {

ZXBStudio/Dialogs/ZXAboutDialog.axaml

@@ -0,0 +1,25 @@
+<Window 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="320" d:DesignHeight="511"
+        Width="320" Height="511"
+        MaxWidth="320" MaxHeight="511"
+        MinWidth="320" MinHeight="511"
+        x:Class="ZXBasicStudio.ZXAboutDialog"
+        Title="About..." CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Topmost="True">
+  <Grid RowDefinitions="2.7*,1*,0.5*,0.5*,0.5*,0.5*,1.5*,1.6*,*,0.4*,0.4*,0.4*,*">
+    <Image Margin="10" Width="128" Height="128" VerticalAlignment="Top" Source="avares://ZXBasicStudio/Assets/IconAbout.png"></Image>
+    <TextBlock Grid.Row="1" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="36" FontWeight="Black">ZX Basic Studio</TextBlock>
+    <TextBlock Grid.Row="2" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="24">Beta release</TextBlock>
+    <TextBlock Grid.Row="3" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="16" Name="txtBuild">Build 1.3.5.6</TextBlock>
+    <TextBlock Grid.Row="4" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="16" Name="txtDate">2023-10-29</TextBlock>
+    <TextBlock Grid.Row="6" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="20" TextAlignment="Center" TextWrapping="Wrap" FontWeight="DemiBold">The ZX Basic Studio development team</TextBlock>
+    <TextBlock Grid.Row="7" VerticalAlignment="Center" TextAlignment="Center" HorizontalAlignment="Center" FontSize="18" TextWrapping="Wrap">El Dr. Gusman, Duefectu, AdolFITO, SirRickster</TextBlock>
+    <TextBlock Grid.Row="8" VerticalAlignment="Center" TextAlignment="Center" HorizontalAlignment="Center" FontSize="16" TextWrapping="Wrap">Many thanks to Boriel for the ZX Basic compiler and his support to this project.</TextBlock>
+    <TextBlock Grid.Row="10" VerticalAlignment="Center" TextAlignment="Center" HorizontalAlignment="Center" FontSize="12" TextWrapping="Wrap">(C) 2023, El Dr. Gusman</TextBlock>
+    <Button Name="btnClose" Grid.Row="12">Close</Button>
+  </Grid>
+</Window>

ZXBStudio/Dialogs/ZXAboutDialog.axaml.cs

@@ -0,0 +1,36 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using System;
+
+namespace ZXBasicStudio;
+
+public partial class ZXAboutDialog : Window
+{
+    public ZXAboutDialog()
+    {
+        InitializeComponent();
+
+        btnClose.Click += BtnClose_Click;
+
+        var name = System.Reflection.Assembly.GetExecutingAssembly().GetName();
+
+        if(name == null || name.Version == null)
+        {
+            txtBuild.Text = "Unknown build";
+            txtDate.Text = "Unknown date";
+            return;
+        }
+
+        DateTime buildDate = new DateTime(2000, 1, 1).AddDays(name.Version.Build);
+
+        txtBuild.Text = $"Build {name.Version.ToString()}";
+        txtDate.Text = buildDate.ToString("yyyy-MM-dd");
+    }
+
+    private void BtnClose_Click(object? sender, RoutedEventArgs e)
+    {
+        this.Close();
+    }
+}

ZXBStudio/MainWindow.axaml

@@ -46,7 +46,8 @@
           <MenuItem Header="Project" IsEnabled="{Binding FileInfo.ProjectLoaded}" Name="mnuCloseProject" Icon="{SvgImage /Svg/White/diagram-project-cross-solid.svg}"></MenuItem>
           <MenuItem Header="File" IsEnabled="{Binding FileInfo.FileLoaded}" Name="mnuCloseFile" Icon="{SvgImage /Svg/White/file-circle-xmark-solid.svg}"></MenuItem>
         </MenuItem>
-          <MenuItem Header="Exit" Name="mnuExitApplication" Icon="{svg:SvgImage /Svg/White/exit-solid.svg}"></MenuItem>
+        <Separator></Separator>
+        <MenuItem Header="Exit" Name="mnuExitApplication" Icon="{svg:SvgImage /Svg/White/exit-solid.svg}"></MenuItem>
       </MenuItem>
       <MenuItem Header="Project">
         <MenuItem Header="Configure project" IsEnabled="{Binding FileInfo.ProjectLoaded}" Name="mnuConfigureProject" Icon="{SvgImage /Svg/White/gears-solid.svg}"></MenuItem>
@@ -80,6 +81,13 @@
         <Separator></Separator>
         <MenuItem Header="Restore layout" Name="mnuRestoreLayout" Icon="{SvgImage /Svg/White/clock-rotate-left-solid.svg}"></MenuItem>
       </MenuItem>
+      <MenuItem Header="Help">
+        <MenuItem Header="ZX Basic Studio repository" Name="mnuRepo" Icon="{SvgImage /Svg/White/github.svg}"></MenuItem>
+        <Separator></Separator>
+        <MenuItem Header="ZX Basic help" Name="mnuZXHelp" Icon="{SvgImage /Svg/White/circle-question-solid.svg}"></MenuItem>
+        <Separator></Separator>
+        <MenuItem Header="About..." Name="mnuAbout" Icon="{SvgImage /Svg/White/circle-info-solid.svg}"></MenuItem>
+      </MenuItem>
     </Menu>
     <StackPanel Spacing="2" Orientation="Horizontal" Grid.Row="1" Grid.ColumnSpan="5" Margin="5">
       <Button Classes="toolbar" Name="btnOpenProject" ToolTip.Tip="Open project">
@@ -98,12 +106,6 @@
         <svg:Svg Path="/Svg/floppy-multiple-disk-solid.svg"></svg:Svg>
       </Button>
       <Line StartPoint="0,0" EndPoint="0,24" Stroke="White" Margin="5,0,5,0"></Line>
-      <Button Classes="toolbar" Name="btnFontIncrease" IsEnabled="{Binding FileInfo.FileLoaded}" ToolTip.Tip="Font size increase">
-      <svg:Svg Path="/Svg/font-increase.svg"></svg:Svg>
-      </Button>
-      <Button Classes="toolbar" Name="btnFontDecrease" IsEnabled="{Binding FileInfo.FileLoaded}" ToolTip.Tip="Font size decrease">
-        <svg:Svg Path="/Svg/font-decrease.svg"></svg:Svg>
-      </Button>
       <Button Classes="toolbar" Name="btnCollapse" IsEnabled="{Binding FileInfo.FileLoaded}" ToolTip.Tip="Collapse code">
         <svg:Svg Path="/Svg/square-minus-solid.svg"></svg:Svg>
       </Button>
@@ -120,6 +122,13 @@
         <svg:Svg Path="/Svg/circle-xmark-solid.svg"></svg:Svg>
       </Button>
       <Line StartPoint="0,0" EndPoint="0,24" Stroke="White" Margin="5,0,5,0"></Line>
+      <Button Classes="toolbar" Name="btnFontIncrease" IsEnabled="{Binding FileInfo.FileLoaded}" ToolTip.Tip="Increase font size (global)">
+        <svg:Svg Path="/Svg/font-increase.svg"></svg:Svg>
+      </Button>
+      <Button Classes="toolbar" Name="btnFontDecrease" IsEnabled="{Binding FileInfo.FileLoaded}" ToolTip.Tip="Decrease font size (global)">
+        <svg:Svg Path="/Svg/font-decrease.svg"></svg:Svg>
+      </Button>
+      <Line StartPoint="0,0" EndPoint="0,24" Stroke="White" Margin="5,0,5,0"></Line>
       <ComboBox Classes="toolbar" Grid.Row="1" Grid.Column="2" Name="cbModel" Width="110" SelectedIndex="0" FontSize="10">
         <ComboBoxItem>Spectrum 48k</ComboBoxItem>
         <ComboBoxItem>Spectrum 128k</ComboBoxItem>

ZXBStudio/MainWindow.axaml.cs

@@ -18,6 +18,7 @@
 using CoreSpectrum.Enums;
 using CoreSpectrum.SupportClasses;
 using HarfBuzzSharp;
+using Metsys.Bson;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using SkiaSharp;
@@ -55,14 +56,15 @@ namespace ZXBasicStudio
 {
     public partial class MainWindow : ZXWindowBase //, IObserver<RawInputEventArgs>
     {
+        const string repoUrl = "https://github.com/gusmanb/ZXBasicStudio";
+        const string zxbHelpUrl = "https://zxbasic.readthedocs.io/en/docs/";   
 
         #region Shortcut handling
 
         internal static Guid KeybSourceId = Guid.Parse("72af48c7-4d62-4bef-8676-63c10d99de20");
 
         internal static ZXKeybCommand[] KeybCommands =
         {
-            new ZXKeybCommand { CommandId = Guid.Parse("21bc5c34-df5e-449e-a826-88e1f42d7810"), CommandName = "Exit application", Key = Key.None, Modifiers = KeyModifiers.None },
             new ZXKeybCommand { CommandId = Guid.Parse("62c23849-7312-41ac-8788-9f6d851cc3b9"), CommandName = "Build and run", Key = Key.F5, Modifiers = KeyModifiers.None },
             new ZXKeybCommand { CommandId = Guid.Parse("d9222ec4-5d7a-4b04-b9e3-e29d6d8bca78"), CommandName = "Build and debug", Key = Key.F6, Modifiers = KeyModifiers.None },
             new ZXKeybCommand { CommandId = Guid.Parse("57aff55a-f4a1-4a57-a532-a38117e1a532"), CommandName = "Pause emulation", Key = Key.F7, Modifiers = KeyModifiers.None },
@@ -77,6 +79,7 @@ public partial class MainWindow : ZXWindowBase //, IObserver<RawInputEventArgs>
             new ZXKeybCommand { CommandId = Guid.Parse("7b50369f-3f48-4653-99c1-26e566691e3c"), CommandName = "Debug View", Key = Key.F10, Modifiers = KeyModifiers.Control | KeyModifiers.Shift },
             new ZXKeybCommand { CommandId = Guid.Parse("86b341a1-8d07-4af2-b4b0-ca953cd3dbc0"), CommandName = "Play View", Key = Key.F11, Modifiers = KeyModifiers.Control | KeyModifiers.Shift },
             new ZXKeybCommand { CommandId = Guid.Parse("424f7395-c29d-44f9-8f9e-43b8891ec261"), CommandName = "All tools View", Key = Key.F12, Modifiers = KeyModifiers.Control | KeyModifiers.Shift },
+            new ZXKeybCommand { CommandId = Guid.Parse("21bc5c34-df5e-449e-a826-88e1f42d7810"), CommandName = "Exit application", Key = Key.None, Modifiers = KeyModifiers.None }
         };
 
         Dictionary<Guid, Action> _shortcuts = new Dictionary<Guid, Action>();
@@ -158,7 +161,9 @@ public MainWindow()
             mnuAllToolsView.Click += ToolsLayout;
             mnuDebugView.Click += DebugLayout;
             mnuPlayView.Click += PlayLayout;
-
+            mnuRepo.Click += OpenRepository;
+            mnuZXHelp.Click += OpenZXHelp;
+            mnuAbout.Click += OpenAbout;
             #endregion
 
             #region Attach toolbar events
@@ -278,6 +283,22 @@ public MainWindow()
             ZXLayoutPersister.RestoreLayout(grdMain, dockLeft, dockRight, dockBottom, new[] { _playerDock });
         }
 
+        private void OpenAbout(object? sender, RoutedEventArgs e)
+        {
+            ZXAboutDialog zXAboutDialog = new ZXAboutDialog();
+            zXAboutDialog.ShowDialog(this);
+        }
+
+        private void OpenZXHelp(object? sender, RoutedEventArgs e)
+        {
+            OpenUrl(zxbHelpUrl);
+        }
+
+        private void OpenRepository(object? sender, RoutedEventArgs e)
+        {
+            OpenUrl(repoUrl);
+        }
+
         #region File manipulation
         private void PeExplorer_SelectedPathChanged(object? sender, System.EventArgs e)
         {
@@ -1840,6 +1861,39 @@ private void BtnMapKeyboard_Click(object? sender, RoutedEventArgs e)
             emu.EnableKeyMapping = btnMapKeyboard.IsChecked ?? false;
         }
 
+        private void OpenUrl(string Url)
+        {
+
+            if (string.IsNullOrWhiteSpace(Url))
+                return;
+
+            try
+            {
+                ProcessStartInfo processInfo = new()
+                {
+                    FileName = Url,
+                    UseShellExecute = true
+                };
+
+                Process.Start(processInfo);
+            }
+            catch
+            {
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                {
+                    Process.Start("xdg-open", Url);
+                }
+                else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+                {
+                    Process.Start("open", Url);
+                }
+                else
+                {
+                    return;
+                }
+            }
+        }
+
         private async void DumpRegisters(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
         {
             var select = await StorageProvider.SaveFilePickerAsync(new Avalonia.Platform.Storage.FilePickerSaveOptions