Add menu sort action

MainWindow.xaml

@@ -60,11 +60,15 @@
                         Margin="0,0,8,0">
                     <Button.ContextMenu>
                         <ContextMenu>
+                            <MenuItem Header="Validate Targets" Click="ValidateTargets_Click"/>
+                            <Separator/>
                             <MenuItem Header="Backup Config" Click="BackupConfig_Click"/>
                             <MenuItem Header="Restore from Backup" Click="RestoreConfig_Click"/>
                             <Separator/>
                             <MenuItem Header="Export Config" Click="ExportConfig_Click"/>
                             <MenuItem Header="Import Config" Click="ImportConfig_Click"/>
+                            <MenuItem Header="Export Selected Item" Click="ExportSelectedItem_Click"/>
+                            <MenuItem Header="Import Item" Click="ImportItem_Click"/>
                             <Separator/>
                             <MenuItem Header="Reset to Defaults" Click="ResetConfig_Click"/>
                             <MenuItem Header="Reload Config" Click="ReloadConfig_Click"/>

MainWindow.xaml.cs

@@ -22,6 +22,7 @@ public partial class MainWindow : Window
     private List<int>? selectedPath;
     private string? loadedAutoIconPath;
     private System.Windows.Point dragStartPoint;
+    private sealed record TargetValidationIssue(string ItemPath, string Problem);
 
     public MainWindow()
     {
@@ -106,6 +107,12 @@ public partial class MainWindow : Window
         var duplicateMenuItem = new System.Windows.Controls.MenuItem { Header = "Duplicate Item" };
         duplicateMenuItem.Click += DuplicateItem_Click;
 
+        var sortMenuItem = new System.Windows.Controls.MenuItem
+        {
+            Header = item.Type == LauncherItemType.Menu ? "Sort This Menu" : "Sort This Level"
+        };
+        sortMenuItem.Click += SortSelected_Click;
+
         var treeItem = new TreeViewItem
         {
             Header = $"{GetTreeStatusPrefix(item)}{item.Title} ({item.Type})",
@@ -116,6 +123,7 @@ public partial class MainWindow : Window
         treeItem.ContextMenu.Items.Add(disableMenuItem);
         treeItem.ContextMenu.Items.Add(openContainingFolderMenuItem);
         treeItem.ContextMenu.Items.Add(duplicateMenuItem);
+        treeItem.ContextMenu.Items.Add(sortMenuItem);
         treeItem.PreviewMouseRightButtonDown += (_, e) =>
         {
             treeItem.IsSelected = true;
@@ -1045,6 +1053,46 @@ public partial class MainWindow : Window
         RefreshView(selectedItem);
     }
 
+    private void SortSelected_Click(object sender, RoutedEventArgs e)
+    {
+        if (controller is null || selectedItem is null)
+        {
+            return;
+        }
+
+        ApplyCurrentItem();
+        LauncherItem itemToSelect = selectedItem;
+        if (selectedItem.Type == LauncherItemType.Menu)
+        {
+            SortItems(selectedItem.Children);
+            RefreshView(itemToSelect);
+            StatusText.Text = $"Sorted {itemToSelect.Title}. Click Save to keep it.";
+            return;
+        }
+
+        List<LauncherItem>? siblings = FindSiblings(controller.Config.Items, selectedItem);
+        if (siblings is null)
+        {
+            return;
+        }
+
+        SortItems(siblings);
+        RefreshView(itemToSelect);
+        StatusText.Text = $"Sorted this level. Click Save to keep it.";
+    }
+
+    private static void SortItems(List<LauncherItem> items)
+    {
+        List<LauncherItem> sortedItems = items
+            .OrderByDescending(item => item.IsFavorite)
+            .ThenBy(item => item.Title, StringComparer.CurrentCultureIgnoreCase)
+            .ThenBy(item => item.Type)
+            .ToList();
+
+        items.Clear();
+        items.AddRange(sortedItems);
+    }
+
     private static bool RemoveItem(List<LauncherItem> items, LauncherItem item)
     {
         if (items.Remove(item))
@@ -1259,6 +1307,114 @@ public partial class MainWindow : Window
         }
     }
 
+    private void ExportSelectedItem_Click(object sender, RoutedEventArgs e)
+    {
+        if (selectedItem is null)
+        {
+            MessageBox.Show("Select an item or menu to export first.", "Taskbar Launcher");
+            return;
+        }
+
+        ApplyCurrentItem();
+        string safeTitle = MakeSafeFileName(string.IsNullOrWhiteSpace(selectedItem.Title) ? "launcher-item" : selectedItem.Title);
+        using SaveFileDialog dialog = new()
+        {
+            Title = "Export selected launcher item",
+            Filter = "JSON item files|*.json|All files|*.*",
+            FileName = $"{safeTitle}-{DateTime.Now:yyyyMMdd-HHmmss}.json",
+            InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
+        };
+
+        if (dialog.ShowDialog() != System.Windows.Forms.DialogResult.OK)
+        {
+            return;
+        }
+
+        try
+        {
+            string exportPath = ConfigService.ExportItemTo(dialog.FileName, selectedItem);
+            StatusText.Text = $"Exported {selectedItem.Title} to {exportPath}";
+        }
+        catch (Exception ex)
+        {
+            MessageBox.Show($"Could not export selected item.\n\n{ex.Message}", "Taskbar Launcher");
+        }
+    }
+
+    private void ImportItem_Click(object sender, RoutedEventArgs e)
+    {
+        if (controller is null)
+        {
+            return;
+        }
+
+        using OpenFileDialog dialog = new()
+        {
+            Title = "Import launcher item",
+            Filter = "JSON item files|*.json|All files|*.*",
+            InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
+        };
+
+        if (dialog.ShowDialog() != System.Windows.Forms.DialogResult.OK)
+        {
+            return;
+        }
+
+        try
+        {
+            ApplyCurrentItem();
+            LauncherItem importedItem = ConfigService.ImportItemFrom(dialog.FileName);
+            AddImportedItem(importedItem);
+            selectedPath = FindItemPath(importedItem);
+            RefreshView(importedItem);
+            StatusText.Text = $"Imported {importedItem.Title}. Click Save to keep it.";
+        }
+        catch (Exception ex)
+        {
+            MessageBox.Show($"Could not import item.\n\n{ex.Message}", "Taskbar Launcher");
+        }
+    }
+
+    private void AddImportedItem(LauncherItem importedItem)
+    {
+        if (controller is null)
+        {
+            return;
+        }
+
+        if (selectedItem is null)
+        {
+            controller.Config.Items.Add(importedItem);
+            return;
+        }
+
+        if (selectedItem.Type == LauncherItemType.Menu)
+        {
+            selectedItem.Children.Add(importedItem);
+            return;
+        }
+
+        List<LauncherItem>? siblings = FindSiblings(controller.Config.Items, selectedItem);
+        if (siblings is null)
+        {
+            controller.Config.Items.Add(importedItem);
+            return;
+        }
+
+        int selectedIndex = siblings.IndexOf(selectedItem);
+        siblings.Insert(selectedIndex + 1, importedItem);
+    }
+
+    private static string MakeSafeFileName(string fileName)
+    {
+        foreach (char invalidChar in Path.GetInvalidFileNameChars())
+        {
+            fileName = fileName.Replace(invalidChar, '-');
+        }
+
+        return fileName.Trim();
+    }
+
     private void ResetConfig_Click(object sender, RoutedEventArgs e)
     {
         MessageBoxResult result = MessageBox.Show(
@@ -1343,6 +1499,159 @@ public partial class MainWindow : Window
         ConfigService.OpenConfigFolder();
     }
 
+    private void ValidateTargets_Click(object sender, RoutedEventArgs e)
+    {
+        if (controller is null)
+        {
+            return;
+        }
+
+        ApplyConfigFields();
+        List<TargetValidationIssue> issues = [];
+        ValidateTargets(controller.Config.Items, [], issues);
+
+        if (issues.Count == 0)
+        {
+            StatusText.Text = "Validation complete. No broken targets found.";
+            MessageBox.Show("No broken targets found.", "Taskbar Launcher");
+            return;
+        }
+
+        string message = $"Found {issues.Count} possible broken target(s):\n\n" +
+            string.Join("\n", issues.Take(20).Select(issue => $"- {issue.ItemPath}: {issue.Problem}"));
+        if (issues.Count > 20)
+        {
+            message += $"\n\nShowing first 20 of {issues.Count}.";
+        }
+
+        StatusText.Text = $"Validation found {issues.Count} possible broken target(s).";
+        MessageBox.Show(message, "Taskbar Launcher");
+    }
+
+    private static void ValidateTargets(IEnumerable<LauncherItem> items, List<string> parentNames, List<TargetValidationIssue> issues)
+    {
+        foreach (LauncherItem item in items)
+        {
+            List<string> itemPath = [.. parentNames, string.IsNullOrWhiteSpace(item.Title) ? "Untitled" : item.Title];
+            if (!item.IsDisabled && TryGetTargetIssue(item, out string? problem) && problem is not null)
+            {
+                issues.Add(new TargetValidationIssue(string.Join(" > ", itemPath), problem));
+            }
+
+            if (item.Children.Count > 0)
+            {
+                ValidateTargets(item.Children, itemPath, issues);
+            }
+        }
+    }
+
+    private static bool TryGetTargetIssue(LauncherItem item, out string? problem)
+    {
+        problem = null;
+
+        if (item.Type == LauncherItemType.Menu || item.IsDisabled)
+        {
+            return false;
+        }
+
+        if (string.IsNullOrWhiteSpace(item.Target))
+        {
+            problem = "Target is blank.";
+            return true;
+        }
+
+        string target = Environment.ExpandEnvironmentVariables(item.Target.Trim());
+        switch (item.Type)
+        {
+            case LauncherItemType.Folder:
+                if (!Directory.Exists(target))
+                {
+                    problem = "Folder does not exist.";
+                    return true;
+                }
+
+                return false;
+
+            case LauncherItemType.Website:
+                if (!Uri.TryCreate(target, UriKind.Absolute, out Uri? uri) ||
+                    (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps))
+                {
+                    problem = "Website target is not a valid http or https URL.";
+                    return true;
+                }
+
+                return false;
+
+            case LauncherItemType.App:
+                if (!File.Exists(target) && !CommandExistsOnPath(target))
+                {
+                    problem = "Application or shortcut was not found.";
+                    return true;
+                }
+
+                return false;
+
+            case LauncherItemType.File:
+                if (!File.Exists(target))
+                {
+                    problem = "File does not exist.";
+                    return true;
+                }
+
+                return false;
+
+            default:
+                problem = "Item type is not recognized.";
+                return true;
+        }
+    }
+
+    private static bool CommandExistsOnPath(string target)
+    {
+        if (target.IndexOfAny([Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar]) >= 0)
+        {
+            return false;
+        }
+
+        string? pathValue = Environment.GetEnvironmentVariable("PATH");
+        if (string.IsNullOrWhiteSpace(pathValue))
+        {
+            return false;
+        }
+
+        string extension = Path.GetExtension(target);
+        IEnumerable<string> candidateNames = string.IsNullOrWhiteSpace(extension)
+            ? GetExecutableCandidateNames(target)
+            : [target];
+
+        foreach (string directory in pathValue.Split(Path.PathSeparator, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries))
+        {
+            foreach (string candidateName in candidateNames)
+            {
+                string candidatePath = Path.Combine(directory, candidateName);
+                if (File.Exists(candidatePath))
+                {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    private static IEnumerable<string> GetExecutableCandidateNames(string target)
+    {
+        string? pathExtValue = Environment.GetEnvironmentVariable("PATHEXT");
+        string[] extensions = string.IsNullOrWhiteSpace(pathExtValue)
+            ? [".EXE", ".CMD", ".BAT", ".COM"]
+            : pathExtValue.Split(Path.PathSeparator, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+        foreach (string extension in extensions)
+        {
+            yield return target + extension;
+        }
+    }
+
     private void About_Click(object sender, RoutedEventArgs e)
     {
         AboutWindow aboutWindow = new()

README.md

@@ -19,6 +19,9 @@ Download the compiled Windows release from:
 - Right-click launcher entries to pin or unpin them from the top
 - Right-click launcher entries or Settings items to temporarily disable them
 - Right-click app/file entries to open their containing folder
+- Validate missing app, file, and folder targets from Settings
+- Export and import selected items or menu sections
+- Sort a selected menu or item level alphabetically
 - Right-click item duplication in Settings
 - Right-click items in Settings to pin them to the top of their menu
 - Per-item icon and display mode

Services/ConfigService.cs

@@ -80,6 +80,49 @@ public static class ConfigService
         return destinationPath;
     }
 
+    public static string ExportItemTo(string destinationPath, LauncherItem item)
+    {
+        if (string.IsNullOrWhiteSpace(destinationPath))
+        {
+            throw new ArgumentException("Choose a destination path for the exported item.", nameof(destinationPath));
+        }
+
+        string? destinationFolder = Path.GetDirectoryName(destinationPath);
+        if (!string.IsNullOrWhiteSpace(destinationFolder))
+        {
+            Directory.CreateDirectory(destinationFolder);
+        }
+
+        NormalizeDisplayModes(item);
+        string json = JsonSerializer.Serialize(item, JsonOptions);
+        File.WriteAllText(destinationPath, json);
+        return destinationPath;
+    }
+
+    public static LauncherItem ImportItemFrom(string sourcePath)
+    {
+        if (!File.Exists(sourcePath))
+        {
+            throw new FileNotFoundException("The selected item file was not found.", sourcePath);
+        }
+
+        string json = File.ReadAllText(sourcePath);
+        LauncherItem item;
+        try
+        {
+            item = JsonSerializer.Deserialize<LauncherItem>(json, JsonOptions)
+                ?? throw new InvalidDataException("The selected item file could not be read.");
+        }
+        catch (JsonException ex)
+        {
+            throw new InvalidDataException("The selected file is not a valid Taskbar Launcher item export.", ex);
+        }
+
+        ValidateItem(item);
+        NormalizeDisplayModes(item);
+        return item;
+    }
+
     public static LauncherConfig ImportFrom(string sourcePath)
     {
         LauncherConfig config = ReadConfigFile(sourcePath);

TaskbarLauncher.csproj

@@ -12,8 +12,8 @@
     <Authors>Ray Berezowski</Authors>
     <ApplicationIcon>Assets\AppIcon.ico</ApplicationIcon>
     <Version>1.0.1</Version>
-    <AssemblyVersion>1.0.1.9</AssemblyVersion>
-    <FileVersion>1.0.1.9</FileVersion>
+    <AssemblyVersion>1.0.1.13</AssemblyVersion>
+    <FileVersion>1.0.1.13</FileVersion>
     <InformationalVersion>1.0.1</InformationalVersion>
   </PropertyGroup>
 

docs/INSTALL.md

@@ -41,6 +41,9 @@ From Settings you can:
 - Right-click an item and choose **Pin to Top** to show it first in its menu
 - Right-click an item and choose **Disable Item** or **Enable Item** to hide or restore it
 - Right-click an app or file item and choose **Open Containing Folder**
+- Use **Config... > Validate Targets** to check for missing app, file, and folder targets
+- Use **Config... > Export Selected Item** or **Import Item** to share one item or menu section
+- Right-click an item and choose **Sort This Menu** or **Sort This Level**
 - Set per-item icon sizes
 - Back up and restore `config.json`
 - Enable Start with Windows