[settings] Show uneditable shortcut in CmdPal page (#38060)

* [settings] Show CmdPal shortcut
* show in dashboard as well


![image](https://github.com/user-attachments/assets/395d112d-162c-412c-99c2-2625b23cc451)

![image](https://github.com/user-attachments/assets/a0362e2b-e647-4a19-b4ff-fdb501e236d7)

As noted in #37908

src/settings-ui/Settings.UI.Library/CmdPalProperties.cs

@@ -0,0 +1,62 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.IO;
+using System.IO.Abstractions;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Library
+{
+    public class CmdPalProperties
+    {
+        // Default shortcut - Win + Alt + Space
+        public static readonly HotkeySettings DefaultHotkeyValue = new HotkeySettings(true, false, true, false, 32);
+
+#pragma warning disable SA1401 // Fields should be private
+#pragma warning disable CA1051 // Do not declare visible instance fields
+        public HotkeySettings Hotkey;
+#pragma warning restore CA1051 // Do not declare visible instance fields
+#pragma warning restore SA1401 // Fields should be private
+
+        private string _settingsFilePath;
+
+        public CmdPalProperties()
+        {
+            var localAppDataDir = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+
+#if DEBUG
+            _settingsFilePath = Path.Combine(localAppDataDir, "Packages", "Microsoft.CommandPalette.Dev_8wekyb3d8bbwe", "LocalState", "settings.json");
+#else
+            _settingsFilePath = Path.Combine(localAppDataDir, "Packages", "Microsoft.CommandPalette_8wekyb3d8bbwe", "LocalState", "settings.json");
+#endif
+
+            InitializeHotkey();
+        }
+
+        public void InitializeHotkey()
+        {
+            try
+            {
+                string json = File.ReadAllText(_settingsFilePath); // Read JSON file
+                using JsonDocument doc = JsonDocument.Parse(json);
+
+                if (doc.RootElement.TryGetProperty(nameof(Hotkey), out JsonElement hotkeyElement))
+                {
+                    Hotkey = JsonSerializer.Deserialize<HotkeySettings>(hotkeyElement.GetRawText());
+
+                    if (Hotkey == null)
+                    {
+                        Hotkey = DefaultHotkeyValue;
+                    }
+                }
+            }
+            catch (Exception)
+            {
+                Hotkey = DefaultHotkeyValue;
+            }
+        }
+    }
+}

src/settings-ui/Settings.UI.Library/Utilities/Helper.cs

@@ -53,6 +53,27 @@ namespace Microsoft.PowerToys.Settings.UI.Library.Utilities
             return sendCustomAction.ToJsonString();
         }
 
+        public static IFileSystemWatcher GetFileWatcher(string path, Action onChangedCallback, IFileSystem fileSystem = null)
+        {
+            fileSystem ??= FileSystem;
+
+            var dirPath = Path.GetDirectoryName(path);
+            if (!fileSystem.Directory.Exists(dirPath))
+            {
+                return null;
+            }
+
+            var watcher = fileSystem.FileSystemWatcher.New();
+            watcher.Path = dirPath;
+            watcher.Filter = Path.GetFileName(path);
+            watcher.NotifyFilter = NotifyFilters.LastWrite;
+            watcher.EnableRaisingEvents = true;
+
+            watcher.Changed += (o, e) => onChangedCallback();
+
+            return watcher;
+        }
+
         public static IFileSystemWatcher GetFileWatcher(string moduleName, string fileName, Action onChangedCallback, IFileSystem fileSystem = null)
         {
             fileSystem ??= FileSystem;

src/settings-ui/Settings.UI/SettingsXAML/Views/CmdPalPage.xaml

@@ -25,6 +25,16 @@
                     IsOpen="{x:Bind ViewModel.IsEnabledGpoConfigured, Mode=OneWay}"
                     IsTabStop="{x:Bind ViewModel.IsEnabledGpoConfigured, Mode=OneWay}"
                     Severity="Informational" />
+
+                <controls:SettingsGroup x:Uid="CmdPal_Activation_GroupSettings" IsEnabled="{x:Bind ViewModel.IsEnabled, Mode=OneWay}">
+
+                    <tkcontrols:SettingsCard x:Uid="CmdPal_ActivationShortcut" HeaderIcon="{ui:FontIcon Glyph=&#xEDA7;}">
+                        <controls:ShortcutControl
+                            MinWidth="{StaticResource SettingActionControlMinWidth}"
+                            HotkeySettings="{x:Bind Path=ViewModel.Hotkey, Mode=OneWay}"
+                            IsEnabled="False" />
+                    </tkcontrols:SettingsCard>
+                </controls:SettingsGroup>
             </StackPanel>
         </controls:SettingsPageControl.ModuleContent>
 

src/settings-ui/Settings.UI/SettingsXAML/Views/CmdPalPage.xaml.cs

@@ -19,7 +19,8 @@ namespace Microsoft.PowerToys.Settings.UI.Views
             ViewModel = new CmdPalViewModel(
                 settingsUtils,
                 SettingsRepository<GeneralSettings>.GetInstance(settingsUtils),
-                ShellPage.SendDefaultIPCMessage);
+                ShellPage.SendDefaultIPCMessage,
+                DispatcherQueue);
             DataContext = ViewModel;
             InitializeComponent();
         }

src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

@@ -4990,4 +4990,13 @@ To record a specific window, enter the hotkey with the Alt key in the opposite m
   <data name="RetryLabel.Text" xml:space="preserve">
     <value>Retry</value>
   </data>
+  <data name="CmdPal_Activation_GroupSettings.Header" xml:space="preserve">
+    <value>Activation</value>
+  </data>
+  <data name="CmdPal_ActivationShortcut.Header" xml:space="preserve">
+    <value>Activation shortcut</value>
+  </data>
+  <data name="CmdPal_ActivationShortcut.Description" xml:space="preserve">
+    <value>Go to Command Palette settings to customize the activation shortcut.</value>
+  </data>
 </root>

src/settings-ui/Settings.UI/ViewModels/CmdPalViewModel.cs

@@ -4,15 +4,19 @@
 
 using System;
 using System.IO;
+using System.IO.Abstractions;
 using System.Linq;
 using System.Reflection;
+using System.Text.Json;
 using System.Text.RegularExpressions;
 using global::PowerToys.GPOWrapper;
 using ManagedCommon;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.Library.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
+using Microsoft.PowerToys.Settings.UI.Library.Utilities;
 using Microsoft.PowerToys.Settings.UI.ViewModels.Commands;
+using Microsoft.UI.Dispatching;
 using Windows.Management.Deployment;
 
 namespace Microsoft.PowerToys.Settings.UI.ViewModels
@@ -21,12 +25,16 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
     {
         private GpoRuleConfigured _enabledGpoRuleConfiguration;
         private bool _isEnabled;
+        private HotkeySettings _hotkey;
+        private IFileSystemWatcher _watcher;
+        private DispatcherQueue _uiDispatcherQueue;
+        private CmdPalProperties _cmdPalProperties;
 
         private GeneralSettings GeneralSettingsConfig { get; set; }
 
         private Func<string, int> SendConfigMSG { get; }
 
-        public CmdPalViewModel(ISettingsUtils settingsUtils, ISettingsRepository<GeneralSettings> settingsRepository, Func<string, int> ipcMSGCallBackFunc)
+        public CmdPalViewModel(ISettingsUtils settingsUtils, ISettingsRepository<GeneralSettings> settingsRepository, Func<string, int> ipcMSGCallBackFunc, DispatcherQueue uiDispatcherQueue)
         {
             ArgumentNullException.ThrowIfNull(settingsUtils);
 
@@ -35,8 +43,32 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
             GeneralSettingsConfig = settingsRepository.SettingsConfig;
 
+            _uiDispatcherQueue = uiDispatcherQueue;
+            _cmdPalProperties = new CmdPalProperties();
+
             InitializeEnabledValue();
 
+            var localAppDataDir = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+
+#if DEBUG
+            var settingsPath = Path.Combine(localAppDataDir, "Packages", "Microsoft.CommandPalette.Dev_8wekyb3d8bbwe", "LocalState", "settings.json");
+#else
+            var settingsPath = Path.Combine(localAppDataDir, "Packages", "Microsoft.CommandPalette_8wekyb3d8bbwe", "LocalState", "settings.json");
+#endif
+
+            _hotkey = _cmdPalProperties.Hotkey;
+
+            _watcher = Helper.GetFileWatcher(settingsPath, () =>
+            {
+                _cmdPalProperties.InitializeHotkey();
+                _hotkey = _cmdPalProperties.Hotkey;
+
+                _uiDispatcherQueue.TryEnqueue(() =>
+                {
+                    OnPropertyChanged(nameof(Hotkey));
+                });
+            });
+
             // set the callback functions value to handle outgoing IPC message.
             SendConfigMSG = ipcMSGCallBackFunc;
         }
@@ -82,6 +114,15 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             }
         }
 
+        public HotkeySettings Hotkey
+        {
+            get => _hotkey;
+
+            private set
+            {
+            }
+        }
+
         public bool IsEnabledGpoConfigured { get; private set; }
 
         public void RefreshEnabledState()

src/settings-ui/Settings.UI/ViewModels/DashboardViewModel.cs

@@ -223,9 +223,11 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
         private ObservableCollection<DashboardModuleItem> GetModuleItemsCmdPal()
         {
+            var hotkey = new CmdPalProperties().Hotkey;
+
             var list = new List<DashboardModuleItem>
             {
-                new DashboardModuleTextItem() { Label = resourceLoader.GetString("CmdPal_ShortDescription") },
+                new DashboardModuleShortcutItem() { Label = resourceLoader.GetString("CmdPal_ShortDescription"), Shortcut = hotkey.GetKeysList() },
             };
             return new ObservableCollection<DashboardModuleItem>(list);
         }