common: refactor common library pt2 (#8588)

- remove common lib
- split settings, remove common-md
- move ipc interop/kb_layout to interop
- rename core -> settings, settings -> old_settings
- os-detect header-only; interop -> PowerToysInterop
- split notifications, move single-use headers where they're used
- winstore lib
- rename com utils
- rename Updating and Telemetry projects
- rename core -> settings-ui and remove examples folder
- rename settings-ui folder + consisent common/version include

src/settings-ui/Microsoft.PowerToys.Settings.UI.Library/ViewModels/PowerPreviewViewModel.cs

@@ -0,0 +1,138 @@
+// 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.Runtime.CompilerServices;
+using Microsoft.PowerToys.Settings.UI.Library.Helpers;
+using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
+
+namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
+{
+    public class PowerPreviewViewModel : Observable
+    {
+        private const string ModuleName = PowerPreviewSettings.ModuleName;
+
+        private PowerPreviewSettings Settings { get; set; }
+
+        private Func<string, int> SendConfigMSG { get; }
+
+        private string _settingsConfigFileFolder = string.Empty;
+
+        private GeneralSettings GeneralSettingsConfig { get; set; }
+
+        public PowerPreviewViewModel(ISettingsRepository<PowerPreviewSettings> moduleSettingsRepository, ISettingsRepository<GeneralSettings> generalSettingsRepository, Func<string, int> ipcMSGCallBackFunc, string configFileSubfolder = "")
+        {
+            // Update Settings file folder:
+            _settingsConfigFileFolder = configFileSubfolder;
+
+            // To obtain the general Settings configurations of PowerToys
+            if (generalSettingsRepository == null)
+            {
+                throw new ArgumentNullException(nameof(generalSettingsRepository));
+            }
+
+            GeneralSettingsConfig = generalSettingsRepository.SettingsConfig;
+
+            // To obtain the PowerPreview settings if it exists.
+            // If the file does not exist, to create a new one and return the default settings configurations.
+            if (moduleSettingsRepository == null)
+            {
+                throw new ArgumentNullException(nameof(moduleSettingsRepository));
+            }
+
+            Settings = moduleSettingsRepository.SettingsConfig;
+
+            // set the callback functions value to hangle outgoing IPC message.
+            SendConfigMSG = ipcMSGCallBackFunc;
+
+            _svgRenderIsEnabled = Settings.Properties.EnableSvgPreview;
+            _svgThumbnailIsEnabled = Settings.Properties.EnableSvgThumbnail;
+            _mdRenderIsEnabled = Settings.Properties.EnableMdPreview;
+        }
+
+        private bool _svgRenderIsEnabled;
+        private bool _mdRenderIsEnabled;
+        private bool _svgThumbnailIsEnabled;
+
+        public bool SVGRenderIsEnabled
+        {
+            get
+            {
+                return _svgRenderIsEnabled;
+            }
+
+            set
+            {
+                if (value != _svgRenderIsEnabled)
+                {
+                    _svgRenderIsEnabled = value;
+                    Settings.Properties.EnableSvgPreview = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public bool SVGThumbnailIsEnabled
+        {
+            get
+            {
+                return _svgThumbnailIsEnabled;
+            }
+
+            set
+            {
+                if (value != _svgThumbnailIsEnabled)
+                {
+                    _svgThumbnailIsEnabled = value;
+                    Settings.Properties.EnableSvgThumbnail = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public bool MDRenderIsEnabled
+        {
+            get
+            {
+                return _mdRenderIsEnabled;
+            }
+
+            set
+            {
+                if (value != _mdRenderIsEnabled)
+                {
+                    _mdRenderIsEnabled = value;
+                    Settings.Properties.EnableMdPreview = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        public string GetSettingsSubPath()
+        {
+            return _settingsConfigFileFolder + "\\" + ModuleName;
+        }
+
+        public bool IsElevated
+        {
+            get
+            {
+                return GeneralSettingsConfig.IsElevated;
+            }
+        }
+
+        private void RaisePropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            // Notify UI of property change
+            OnPropertyChanged(propertyName);
+
+            if (SendConfigMSG != null)
+            {
+                SndPowerPreviewSettings snd = new SndPowerPreviewSettings(Settings);
+                SndModuleSettings<SndPowerPreviewSettings> ipcMessage = new SndModuleSettings<SndPowerPreviewSettings>(snd);
+                SendConfigMSG(ipcMessage.ToJsonString());
+            }
+        }
+    }
+}