Merge branch 'dev' into DotNet5Upgrade

Flow.Launcher.Core/Flow.Launcher.Core.csproj

@@ -53,6 +53,7 @@
   </ItemGroup>
   
   <ItemGroup>
+    <PackageReference Include="Droplex" Version="1.2.0" />
     <PackageReference Include="FSharp.Core" Version="4.7.1" />
     <PackageReference Include="squirrel.windows" Version="1.5.2" />
   </ItemGroup>

Flow.Launcher.Core/Plugin/PluginsLoader.cs

@@ -3,13 +3,14 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Reflection;
-using System.Runtime.Loader;
 using System.Threading.Tasks;
 using System.Windows.Forms;
+using Droplex;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Infrastructure.Logger;
 using Flow.Launcher.Infrastructure.UserSettings;
 using Flow.Launcher.Plugin;
+using Flow.Launcher.Plugin.SharedCommands;
 
 namespace Flow.Launcher.Core.Plugin
 {
@@ -22,7 +23,7 @@ namespace Flow.Launcher.Core.Plugin
         public static List<PluginPair> Plugins(List<PluginMetadata> metadatas, PluginsSettings settings)
         {
             var dotnetPlugins = DotNetPlugins(metadatas);
-            var pythonPlugins = PythonPlugins(metadatas, settings.PythonDirectory);
+            var pythonPlugins = PythonPlugins(metadatas, settings);
             var executablePlugins = ExecutablePlugins(metadatas);
             var plugins = dotnetPlugins.Concat(pythonPlugins).Concat(executablePlugins).ToList();
             return plugins;
@@ -113,11 +114,14 @@ namespace Flow.Launcher.Core.Plugin
             return plugins;
         }
 
-        public static IEnumerable<PluginPair> PythonPlugins(List<PluginMetadata> source, string pythonDirectory)
+        public static IEnumerable<PluginPair> PythonPlugins(List<PluginMetadata> source, PluginsSettings settings)
         {
-            // try to set Constant.PythonPath, either from
+            if (!source.Any(o => o.Language.ToUpper() == AllowedLanguage.Python))
+                return new List<PluginPair>();
+
+            // Try setting Constant.PythonPath first, either from
             // PATH or from the given pythonDirectory
-            if (string.IsNullOrEmpty(pythonDirectory))
+            if (string.IsNullOrEmpty(settings.PythonDirectory))
             {
                 var paths = Environment.GetEnvironmentVariable(PATH);
                 if (paths != null)
@@ -129,47 +133,103 @@ namespace Flow.Launcher.Core.Plugin
 
                     if (pythonInPath)
                     {
-                        Constant.PythonPath = PythonExecutable;
+                        Constant.PythonPath =
+                            Path.Combine(paths.Split(';').Where(p => p.ToLower().Contains(Python)).FirstOrDefault(), PythonExecutable);
+                        settings.PythonDirectory = FilesFolders.GetPreviousExistingDirectory(FilesFolders.LocationExists, Constant.PythonPath);
                     }
                     else
                     {
-                        Log.Error("|PluginsLoader.PythonPlugins|Python can't be found in PATH.");
+                        Log.Error("PluginsLoader","Failed to set Python path despite the environment variable PATH is found", "PythonPlugins");
                     }
                 }
-                else
-                {
-                    Log.Error("|PluginsLoader.PythonPlugins|PATH environment variable is not set.");
-                }
             }
             else
             {
-                var path = Path.Combine(pythonDirectory, PythonExecutable);
+                var path = Path.Combine(settings.PythonDirectory, PythonExecutable);
                 if (File.Exists(path))
                 {
                     Constant.PythonPath = path;
                 }
                 else
                 {
-                    Log.Error($"|PluginsLoader.PythonPlugins|Can't find python executable in {path}");
+                    Log.Error("PluginsLoader",$"Tried to automatically set from Settings.PythonDirectory " +
+                        $"but can't find python executable in {path}", "PythonPlugins");
                 }
             }
 
-            // if we have a path to the python executable,
-            // load every python plugin pair.
-            if (String.IsNullOrEmpty(Constant.PythonPath))
+            if (string.IsNullOrEmpty(settings.PythonDirectory))
             {
+                if (MessageBox.Show("Flow detected you have installed Python plugins, " +
+                        "would you like to install Python to run them? " +
+                        Environment.NewLine + Environment.NewLine +
+                        "Click no if it's already installed, " +
+                        "and you will be prompted to select the folder that contains the Python executable",
+                        string.Empty, MessageBoxButtons.YesNo) == DialogResult.No
+                    && string.IsNullOrEmpty(settings.PythonDirectory))
+                {
+                    var dlg = new FolderBrowserDialog
+                    {
+                        SelectedPath = Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles)
+                    };
+
+                    var result = dlg.ShowDialog();
+                    if (result == DialogResult.OK)
+                    {
+                        string pythonDirectory = dlg.SelectedPath;
+                        if (!string.IsNullOrEmpty(pythonDirectory))
+                        {
+                            var pythonPath = Path.Combine(pythonDirectory, PythonExecutable);
+                            if (File.Exists(pythonPath))
+                            {
+                                settings.PythonDirectory = pythonDirectory;
+                                Constant.PythonPath = pythonPath;
+                            }
+                            else
+                            {
+                                MessageBox.Show("Can't find python in given directory");
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    DroplexPackage.Drop(App.python3_9_1).Wait();
+
+                    var installedPythonDirectory =
+                        Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"Programs\Python\Python39");
+                    var pythonPath = Path.Combine(installedPythonDirectory, PythonExecutable);
+                    if (FilesFolders.FileExists(pythonPath))
+                    {
+                        settings.PythonDirectory = installedPythonDirectory;
+                        Constant.PythonPath = pythonPath;
+                    }
+                    else
+                    {
+                        Log.Error("PluginsLoader", 
+                            $"Failed to set Python path after Droplex install, {pythonPath} does not exist",
+                            "PythonPlugins");
+                    }
+                }
+            }
+
+            if (string.IsNullOrEmpty(settings.PythonDirectory))
+            {
+                MessageBox.Show("Unable to set Python executable path, please try from Flow's settings (scroll down to the bottom).");
+                Log.Error("PluginsLoader", 
+                    $"Not able to successfully set Python path, the PythonDirectory variable is still an empty string.", 
+                    "PythonPlugins");
+
                 return new List<PluginPair>();
             }
-            else
-            {
-                return source
-                    .Where(o => o.Language.ToUpper() == AllowedLanguage.Python)
-                    .Select(metadata => new PluginPair
-                    {
-                        Plugin = new PythonPlugin(Constant.PythonPath),
-                        Metadata = metadata
-                    });
-            }
+
+            return source
+                .Where(o => o.Language.ToUpper() == AllowedLanguage.Python)
+                .Select(metadata => new PluginPair
+                {
+                    Plugin = new PythonPlugin(Constant.PythonPath),
+                    Metadata = metadata
+                })
+                .ToList();
         }
 
         public static IEnumerable<PluginPair> ExecutablePlugins(IEnumerable<PluginMetadata> source)

Flow.Launcher.Infrastructure/Http/Http.cs

@@ -75,7 +75,7 @@ namespace Flow.Launcher.Infrastructure.Http
         {
             try
             {
-                using var response = await client.GetAsync(url, token);
+                using var response = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead, token);
                 if (response.StatusCode == HttpStatusCode.OK)
                 {
                     await using var fileStream = new FileStream(filePath, FileMode.CreateNew);
@@ -135,7 +135,7 @@ namespace Flow.Launcher.Infrastructure.Http
         public static async Task<Stream> GetStreamAsync([NotNull] string url, CancellationToken token = default)
         {
             Log.Debug($"|Http.Get|Url <{url}>");
-            var response = await client.GetAsync(url, token);
+            var response = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead, token);
             return await response.Content.ReadAsStreamAsync();
         }
     }

Flow.Launcher.Infrastructure/Storage/JsonStorage.cs

@@ -12,7 +12,7 @@ namespace Flow.Launcher.Infrastructure.Storage
     public class JsonStrorage<T> where T : new()
     {
         private readonly JsonSerializerOptions _serializerSettings;
-        private T _data;
+        protected T _data;
         // need a new directory name
         public const string DirectoryName = "Settings";
         public const string FileSuffix = ".json";

Flow.Launcher.Infrastructure/Storage/PluginJsonStorage.cs

@@ -15,5 +15,10 @@ namespace Flow.Launcher.Infrastructure.Storage
 
             FilePath = Path.Combine(DirectoryPath, $"{dataType.Name}{FileSuffix}");
         }
+
+        public PluginJsonStorage(T data) : this()
+        {
+            _data = data;
+        }
     }
 }

Flow.Launcher.Plugin/IPublicAPI.cs

@@ -3,6 +3,7 @@ using JetBrains.Annotations;
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -88,17 +89,86 @@ namespace Flow.Launcher.Plugin
         /// </summary>
         event FlowLauncherGlobalKeyboardEventHandler GlobalKeyboardEvent;
 
+        /// <summary>
+        /// Fuzzy Search the string with the given query. This is the core search mechanism Flow uses
+        /// </summary>
+        /// <param name="query">Query string</param>
+        /// <param name="stringToCompare">The string that will be compared against the query</param>
+        /// <returns>Match results</returns>
         MatchResult FuzzySearch(string query, string stringToCompare);
 
+        /// <summary>
+        /// Http download the spefic url and return as string
+        /// </summary>
+        /// <param name="url">URL to call Http Get</param>
+        /// <param name="token">Cancellation Token</param>
+        /// <returns>Task to get string result</returns>
         Task<string> HttpGetStringAsync(string url, CancellationToken token = default);
 
+        /// <summary>
+        /// Http download the spefic url and return as stream
+        /// </summary>
+        /// <param name="url">URL to call Http Get</param>
+        /// <param name="token">Cancellation Token</param>
+        /// <returns>Task to get stream result</returns>
         Task<Stream> HttpGetStreamAsync(string url, CancellationToken token = default);
 
-        Task HttpDownloadAsync([NotNull] string url, [NotNull] string filePath);
+        /// <summary>
+        /// Download the specific url to a cretain file path
+        /// </summary>
+        /// <param name="url">URL to download file</param>
+        /// <param name="token">place to store file</param>
+        /// <returns>Task showing the progress</returns>
+        Task HttpDownloadAsync([NotNull] string url, [NotNull] string filePath, CancellationToken token = default);
 
+        /// <summary>
+        /// Add ActionKeyword for specific plugin
+        /// </summary>
+        /// <param name="pluginId">ID for plugin that needs to add action keyword</param>
+        /// <param name="newActionKeyword">The actionkeyword that is supposed to be added</param>
         void AddActionKeyword(string pluginId, string newActionKeyword);
 
+        /// <summary>
+        /// Remove ActionKeyword for specific plugin
+        /// </summary>
+        /// <param name="pluginId">ID for plugin that needs to remove action keyword</param>
+        /// <param name="newActionKeyword">The actionkeyword that is supposed to be removed</param>
         void RemoveActionKeyword(string pluginId, string oldActionKeyword);
 
+        /// <summary>
+        /// Log debug message
+        /// Message will only be logged in Debug mode
+        /// </summary>
+        void LogDebug(string className, string message, [CallerMemberName] string methodName = "");
+
+        /// <summary>
+        /// Log info message
+        /// </summary>
+        void LogInfo(string className, string message, [CallerMemberName] string methodName = "");
+
+        /// <summary>
+        /// Log warning message
+        /// </summary>
+        void LogWarn(string className, string message, [CallerMemberName] string methodName = "");
+
+        /// <summary>
+        /// Log an Exception. Will throw if in debug mode so developer will be aware, 
+        /// otherwise logs the eror message. This is the primary logging method used for Flow 
+        /// </summary>
+        void LogException(string className, string message, Exception e, [CallerMemberName] string methodName = "");
+
+        /// <summary>
+        /// Load JsonStorage for current plugin. This is the method used to load settings from json in Flow
+        /// </summary>
+        /// <typeparam name="T">Type for deserialization</typeparam>
+        /// <returns></returns>
+        T LoadJsonStorage<T>() where T : new();
+
+        /// <summary>
+        /// Save JsonStorage for current plugin. This is the method used to save settings to json in Flow
+        /// </summary>
+        /// <typeparam name="T">Type for Serialization</typeparam>
+        /// <returns></returns>
+        void SaveJsonStorage<T>(T setting) where T : new();
     }
 }

Flow.Launcher.Plugin/Interfaces/ISavable.cs

@@ -1,4 +1,4 @@
-namespace Flow.Launcher.Infrastructure.Storage
+namespace Flow.Launcher.Plugin
 {
     /// <summary>
     /// Save plugin settings/cache, 

Flow.Launcher/Flow.Launcher.csproj

@@ -66,6 +66,9 @@
     <Content Include="Images\*.svg">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+	  <Content Include="Images\*.ico">
+		  <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+	  </Content>
   </ItemGroup>
 
   <ItemGroup>

Flow.Launcher/Languages/en.xaml

@@ -121,6 +121,7 @@
     <system:String x:Key="newActionKeywordsCannotBeEmpty">New Action Keyword can't be empty</system:String>
     <system:String x:Key="newActionKeywordsHasBeenAssigned">This new Action Keyword is already assigned to another plugin, please choose a different one</system:String>
     <system:String x:Key="success">Success</system:String>
+    <system:String x:Key="completedSuccessfully">Completed successfully</system:String>
     <system:String x:Key="actionkeyword_tips">Use * if you don't want to specify an action keyword</system:String>
 
     <!--Custom Query Hotkey Dialog-->

Flow.Launcher/MainWindow.xaml

@@ -34,6 +34,7 @@
     <Window.InputBindings>
         <KeyBinding Key="Escape" Command="{Binding EscCommand}"></KeyBinding>
         <KeyBinding Key="F1" Command="{Binding StartHelpCommand}"></KeyBinding>
+        <KeyBinding Key="F5" Command="{Binding ReloadPluginDataCommand}"></KeyBinding>
         <KeyBinding Key="Tab" Command="{Binding SelectNextItemCommand}"></KeyBinding>
         <KeyBinding Key="Tab" Modifiers="Shift" Command="{Binding SelectPrevItemCommand}"></KeyBinding>
         <KeyBinding Key="N" Modifiers="Ctrl" Command="{Binding SelectNextItemCommand}"></KeyBinding>

Flow.Launcher/Msg.xaml.cs

@@ -66,7 +66,7 @@ namespace Flow.Launcher
             }
             if (!File.Exists(iconPath))
             {
-                imgIco.Source = ImageLoader.Load(Path.Combine(Infrastructure.Constant.ProgramDirectory, "Images\\app.png"));
+                imgIco.Source = ImageLoader.Load(Path.Combine(Constant.ProgramDirectory, "Images\\app.png"));
             }
             else {
                 imgIco.Source = ImageLoader.Load(iconPath);

Flow.Launcher/PublicAPIInstance.cs

@@ -18,6 +18,9 @@ using System.Threading;
 using System.IO;
 using Flow.Launcher.Infrastructure.Http;
 using JetBrains.Annotations;
+using System.Runtime.CompilerServices;
+using Flow.Launcher.Infrastructure.Logger;
+using Flow.Launcher.Infrastructure.Storage;
 
 namespace Flow.Launcher
 {
@@ -61,18 +64,15 @@ namespace Flow.Launcher
             // which will cause ungraceful exit
             SaveAppAllSettings();
 
+            // Restart requires Squirrel's Update.exe to be present in the parent folder, 
+            // it is only published from the project's release pipeline. When debugging without it,
+            // the project may not restart or just terminates. This is expected.
             UpdateManager.RestartApp(Constant.ApplicationFileName);
         }
 
-        public void RestarApp()
-        {
-            RestartApp();
-        }
+        public void RestarApp() => RestartApp();
 
-        public void CheckForNewUpdate()
-        {
-            _settingsVM.UpdateApp();
-        }
+        public void CheckForNewUpdate() => _settingsVM.UpdateApp();
 
         public void SaveAppAllSettings()
         {
@@ -82,15 +82,9 @@ namespace Flow.Launcher
             ImageLoader.Save();
         }
 
-        public Task ReloadAllPluginData()
-        {
-            return PluginManager.ReloadData();
-        }
+        public Task ReloadAllPluginData() => PluginManager.ReloadData();
 
-        public void ShowMsg(string title, string subTitle = "", string iconPath = "")
-        {
-            ShowMsg(title, subTitle, iconPath, true);
-        }
+        public void ShowMsg(string title, string subTitle = "", string iconPath = "") => ShowMsg(title, subTitle, iconPath, true);
 
         public void ShowMsg(string title, string subTitle, string iconPath, bool useMainWindowAsOwner = true)
         {
@@ -109,54 +103,40 @@ namespace Flow.Launcher
             });
         }
 
-        public void StartLoadingBar()
-        {
-            _mainVM.ProgressBarVisibility = Visibility.Visible;
-        }
+        public void StartLoadingBar() => _mainVM.ProgressBarVisibility = Visibility.Visible;
 
-        public void StopLoadingBar()
-        {
-            _mainVM.ProgressBarVisibility = Visibility.Collapsed;
-        }
+        public void StopLoadingBar() => _mainVM.ProgressBarVisibility = Visibility.Collapsed;
 
-        public string GetTranslation(string key)
-        {
-            return InternationalizationManager.Instance.GetTranslation(key);
-        }
+        public string GetTranslation(string key) => InternationalizationManager.Instance.GetTranslation(key);
 
-        public List<PluginPair> GetAllPlugins()
-        {
-            return PluginManager.AllPlugins.ToList();
-        }
-
-        public event FlowLauncherGlobalKeyboardEventHandler GlobalKeyboardEvent;
+        public List<PluginPair> GetAllPlugins() => PluginManager.AllPlugins.ToList();
 
         public MatchResult FuzzySearch(string query, string stringToCompare) => StringMatcher.FuzzySearch(query, stringToCompare);
 
-        public Task<string> HttpGetStringAsync(string url, CancellationToken token = default)
-        {
-            return Http.GetAsync(url);
-        }
+        public Task<string> HttpGetStringAsync(string url, CancellationToken token = default) => Http.GetAsync(url);
 
-        public Task<Stream> HttpGetStreamAsync(string url, CancellationToken token = default)
-        {
-            return Http.GetStreamAsync(url);
-        }
+        public Task<Stream> HttpGetStreamAsync(string url, CancellationToken token = default) => Http.GetStreamAsync(url);
 
-        public Task HttpDownloadAsync([NotNull] string url, [NotNull] string filePath)
-        {
-            return Http.DownloadAsync(url, filePath);
-        }
+        public Task HttpDownloadAsync([NotNull] string url, [NotNull] string filePath, CancellationToken token = default) => Http.DownloadAsync(url, filePath, token);
 
-        public void AddActionKeyword(string pluginId, string newActionKeyword)
-        {
-            PluginManager.AddActionKeyword(pluginId, newActionKeyword);
-        }
+        public void AddActionKeyword(string pluginId, string newActionKeyword) => PluginManager.AddActionKeyword(pluginId, newActionKeyword);
+
+        public void RemoveActionKeyword(string pluginId, string oldActionKeyword) => PluginManager.RemoveActionKeyword(pluginId, oldActionKeyword);
+
+        public void LogDebug(string className, string message, [CallerMemberName] string methodName = "") => Log.Debug(className, message, methodName);
+
+        public void LogInfo(string className, string message, [CallerMemberName] string methodName = "") => Log.Info(className, message, methodName);
+
+        public void LogWarn(string className, string message, [CallerMemberName] string methodName = "") => Log.Warn(className, message, methodName);
+
+        public void LogException(string className, string message, Exception e, [CallerMemberName] string methodName = "") => Log.Exception(className, message, e, methodName);
+
+        public T LoadJsonStorage<T>() where T : new() => new PluginJsonStorage<T>().Load();
+
+        public void SaveJsonStorage<T>(T setting) where T : new() => new PluginJsonStorage<T>(setting).Save();
+
+        public event FlowLauncherGlobalKeyboardEventHandler GlobalKeyboardEvent;
 
-        public void RemoveActionKeyword(string pluginId, string oldActionKeyword)
-        {
-            PluginManager.RemoveActionKeyword(pluginId, oldActionKeyword);
-        }
         #endregion
 
         #region Private Methods

Flow.Launcher/SettingWindow.xaml

@@ -11,7 +11,7 @@
         xmlns:svgc="http://sharpvectors.codeplex.com/svgc/"
         x:Class="Flow.Launcher.SettingWindow"
         mc:Ignorable="d"
-        Icon="Images\app.png"
+        Icon="Images\app.ico"
         Title="{DynamicResource flowlauncher_settings}"
         ResizeMode="NoResize"
         WindowStartupLocation="CenterScreen"

Flow.Launcher/ViewModel/MainViewModel.cs

@@ -19,6 +19,7 @@ using Flow.Launcher.Plugin;
 using Flow.Launcher.Plugin.SharedCommands;
 using Flow.Launcher.Storage;
 using Flow.Launcher.Infrastructure.Logger;
+using System.Threading.Channels;
 
 namespace Flow.Launcher.ViewModel
 {
@@ -46,7 +47,7 @@ namespace Flow.Launcher.ViewModel
 
         private readonly Internationalization _translator = InternationalizationManager.Instance;
 
-        private BufferBlock<ResultsForUpdate> _resultsUpdateQueue;
+        private ChannelWriter<ResultsForUpdate> _resultsUpdateChannelWriter;
         private Task _resultsViewUpdateTask;
 
         #endregion
@@ -85,29 +86,32 @@ namespace Flow.Launcher.ViewModel
 
         private void RegisterViewUpdate()
         {
-            _resultsUpdateQueue = new BufferBlock<ResultsForUpdate>();
+            var resultUpdateChannel = Channel.CreateUnbounded<ResultsForUpdate>();
+            _resultsUpdateChannelWriter = resultUpdateChannel.Writer;
             _resultsViewUpdateTask =
                 Task.Run(updateAction).ContinueWith(continueAction, TaskContinuationOptions.OnlyOnFaulted);
 
-
             async Task updateAction()
             {
                 var queue = new Dictionary<string, ResultsForUpdate>();
-                while (await _resultsUpdateQueue.OutputAvailableAsync())
+                var channelReader = resultUpdateChannel.Reader;
+
+                // it is not supposed to be false because it won't be complete
+                while (await channelReader.WaitToReadAsync())
                 {
-                    queue.Clear();
                     await Task.Delay(20);
-                    while (_resultsUpdateQueue.TryReceive(out var item))
+                    while (channelReader.TryRead(out var item))
                     {
                         if (!item.Token.IsCancellationRequested)
                             queue[item.ID] = item;
                     }
 
                     UpdateResultView(queue.Values);
+                    queue.Clear();
                 }
-            }
 
-            ;
+                Log.Error("MainViewModel", "Unexpected ResultViewUpdate ends");
+            };
 
             void continueAction(Task t)
             {
@@ -115,8 +119,8 @@ namespace Flow.Launcher.ViewModel
                 throw t.Exception;
 #else
                 Log.Error($"Error happen in task dealing with viewupdate for results. {t.Exception}");
-                _resultsViewUpdateTask =
- Task.Run(updateAction).ContinueWith(continueAction, TaskContinuationOptions.OnlyOnFaulted);
+                _resultsViewUpdateTask = 
+                    Task.Run(updateAction).ContinueWith(continueAction, TaskContinuationOptions.OnlyOnFaulted);
 #endif
             }
         }
@@ -131,7 +135,10 @@ namespace Flow.Launcher.ViewModel
                     if (e.Query.RawQuery == QueryText) // TODO: allow cancellation
                     {
                         PluginManager.UpdatePluginMetadata(e.Results, pair.Metadata, e.Query);
-                        _resultsUpdateQueue.Post(new ResultsForUpdate(e.Results, pair.Metadata, e.Query, _updateToken));
+                        if (!_resultsUpdateChannelWriter.TryWrite(new ResultsForUpdate(e.Results, pair.Metadata, e.Query, _updateToken)))
+                        {
+                            Log.Error("MainViewModel", "Unable to add item to Result Update Queue");
+                        };
                     }
                 };
             }
@@ -225,6 +232,25 @@ namespace Flow.Launcher.ViewModel
                     SelectedResults = Results;
                 }
             });
+
+            ReloadPluginDataCommand = new RelayCommand(_ =>
+            {
+                var msg = new Msg { Owner = Application.Current.MainWindow };
+
+                MainWindowVisibility = Visibility.Collapsed;
+
+                PluginManager
+                .ReloadData()
+                .ContinueWith(_ =>
+                    Application.Current.Dispatcher.Invoke(() =>
+                    {
+                        msg.Show(
+                            InternationalizationManager.Instance.GetTranslation("success"),
+                            InternationalizationManager.Instance.GetTranslation("completedSuccessfully"),
+                            "");
+                    }))
+                .ConfigureAwait(false);
+            });
         }
 
         #endregion
@@ -313,6 +339,7 @@ namespace Flow.Launcher.ViewModel
         public ICommand LoadContextMenuCommand { get; set; }
         public ICommand LoadHistoryCommand { get; set; }
         public ICommand OpenResultCommand { get; set; }
+        public ICommand ReloadPluginDataCommand { get; set; }
 
         public string OpenResultCommandModifiers { get; private set; }
 
@@ -512,9 +539,12 @@ namespace Flow.Launcher.ViewModel
                         await Task.Yield();
 
                         var results = await PluginManager.QueryForPlugin(plugin, query, currentCancellationToken);
-                        if (!currentCancellationToken.IsCancellationRequested && results != null)
-                            _resultsUpdateQueue.Post(new ResultsForUpdate(results, plugin.Metadata, query,
-                                currentCancellationToken));
+                        if (currentCancellationToken.IsCancellationRequested || results == null) return;
+                        
+                        if (!_resultsUpdateChannelWriter.TryWrite(new ResultsForUpdate(results, plugin.Metadata, query, currentCancellationToken)))
+                        {
+                            Log.Error("MainViewModel", "Unable to add item to Result Update Queue");
+                        };
                     }
                 }, currentCancellationToken)
                 .ContinueWith(t => Log.Exception("|MainViewModel|Plugins Query Exceptions", t.Exception),

Flow.Launcher/ViewModel/ResultsForUpdate.cs

@@ -6,7 +6,7 @@ using System.Threading;
 
 namespace Flow.Launcher.ViewModel
 {
-    public class ResultsForUpdate
+    public struct ResultsForUpdate
     {
         public List<Result> Results { get; }
 
@@ -16,13 +16,6 @@ namespace Flow.Launcher.ViewModel
         public Query Query { get; }
         public CancellationToken Token { get; }
 
-        public ResultsForUpdate(List<Result> results, string resultID, CancellationToken token)
-        {
-            Results = results;
-            ID = resultID;
-            Token = token;
-        }
-
         public ResultsForUpdate(List<Result> results, PluginMetadata metadata, Query query, CancellationToken token)
         {
             Results = results;

Flow.Launcher/ViewModel/ResultsViewModel.cs

@@ -183,13 +183,12 @@ namespace Flow.Launcher.ViewModel
         private List<ResultViewModel> NewResults(List<Result> newRawResults, string resultId)
         {
             if (newRawResults.Count == 0)
-                return Results.ToList();
+                return Results;
 
-            var results = Results as IEnumerable<ResultViewModel>;
 
             var newResults = newRawResults.Select(r => new ResultViewModel(r, _settings));
 
-            return results.Where(r => r.Result.PluginID != resultId)
+            return Results.Where(r => r.Result.PluginID != resultId)
                 .Concat(newResults)
                 .OrderByDescending(r => r.Result.Score)
                 .ToList();
@@ -198,11 +197,9 @@ namespace Flow.Launcher.ViewModel
         private List<ResultViewModel> NewResults(IEnumerable<ResultsForUpdate> resultsForUpdates)
         {
             if (!resultsForUpdates.Any())
-                return Results.ToList();
+                return Results;
 
-            var results = Results as IEnumerable<ResultViewModel>;
-
-            return results.Where(r => r != null && !resultsForUpdates.Any(u => u.Metadata.ID == r.Result.PluginID))
+            return Results.Where(r => r != null && !resultsForUpdates.Any(u => u.ID == r.Result.PluginID))
                           .Concat(resultsForUpdates.SelectMany(u => u.Results, (u, r) => new ResultViewModel(r, _settings)))
                           .OrderByDescending(rv => rv.Result.Score)
                           .ToList();

Plugins/Flow.Launcher.Plugin.BrowserBookmark/Languages/en.xaml

@@ -12,4 +12,6 @@
     <system:String x:Key="flowlauncher_plugin_browserbookmark_settings_newTab">New tab</system:String>
     <system:String x:Key="flowlauncher_plugin_browserbookmark_settings_setBrowserFromPath">Set browser from path:</system:String>
     <system:String x:Key="flowlauncher_plugin_browserbookmark_settings_choose">Choose</system:String>
+    <system:String x:Key="flowlauncher_plugin_browserbookmark_copyurl_title">Copy url</system:String>
+    <system:String x:Key="flowlauncher_plugin_browserbookmark_copyurl_subtitle">Copy the bookmark's url to clipboard</system:String>
 </ResourceDictionary>

Plugins/Flow.Launcher.Plugin.BrowserBookmark/Main.cs

@@ -1,6 +1,9 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
+using System.Windows;
 using System.Windows.Controls;
+using Flow.Launcher.Infrastructure.Logger;
 using Flow.Launcher.Infrastructure.Storage;
 using Flow.Launcher.Plugin.BrowserBookmark.Commands;
 using Flow.Launcher.Plugin.BrowserBookmark.Models;
@@ -9,7 +12,7 @@ using Flow.Launcher.Plugin.SharedCommands;
 
 namespace Flow.Launcher.Plugin.BrowserBookmark
 {
-    public class Main : ISettingProvider, IPlugin, IReloadable, IPluginI18n, ISavable
+    public class Main : ISettingProvider, IPlugin, IReloadable, IPluginI18n, ISavable, IContextMenu
     {
         private PluginInitContext context;
 
@@ -60,7 +63,8 @@ namespace Flow.Launcher.Plugin.BrowserBookmark
                         }
 
                         return true;
-                    }
+                    },
+                    ContextData = new BookmarkAttributes { Url = c.Url }
                 }).Where(r => r.Score > 0);
                 return returnList.ToList();
             }
@@ -84,7 +88,8 @@ namespace Flow.Launcher.Plugin.BrowserBookmark
                         }
 
                         return true;
-                    }
+                    },
+                    ContextData = new BookmarkAttributes { Url = c.Url }
                 }).ToList();
             }
         }
@@ -115,5 +120,39 @@ namespace Flow.Launcher.Plugin.BrowserBookmark
         {
             _storage.Save();
         }
+
+        public List<Result> LoadContextMenus(Result selectedResult)
+        {
+            return new List<Result>() {
+                new Result
+                {
+                    Title = context.API.GetTranslation("flowlauncher_plugin_browserbookmark_copyurl_title"),
+                    SubTitle = context.API.GetTranslation("flowlauncher_plugin_browserbookmark_copyurl_subtitle"),
+                    Action = _ =>
+                    {
+                        try
+                        {
+                            Clipboard.SetDataObject(((BookmarkAttributes)selectedResult.ContextData).Url);
+
+                            return true;
+                        }
+                        catch (Exception e)
+                        {
+                            var message = "Failed to set url in clipboard";
+                            Log.Exception("Main",message, e, "LoadContextMenus");
+
+                            context.API.ShowMsg(message);
+
+                            return false;
+                        }
+                    },
+                    IcoPath = "Images\\copylink.png"
+                }};
+        }
+
+        internal class BookmarkAttributes
+        {
+            internal string Url { get; set; }
+        }
     }
 }

Plugins/Flow.Launcher.Plugin.BrowserBookmark/plugin.json

@@ -4,7 +4,7 @@
   "Name": "Browser Bookmarks",
   "Description": "Search your browser bookmarks",
   "Author": "qianlifeng, Ioannis G.",
-  "Version": "1.3.2",
+  "Version": "1.4.0",
   "Language": "csharp",
   "Website": "https://github.com/Flow-Launcher/Flow.Launcher",
   "ExecuteFileName": "Flow.Launcher.Plugin.BrowserBookmark.dll",

Plugins/Flow.Launcher.Plugin.PluginsManager/Flow.Launcher.Plugin.PluginsManager.csproj

@@ -18,6 +18,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\Flow.Launcher.Infrastructure\Flow.Launcher.Infrastructure.csproj" />
+	<ProjectReference Include="..\..\Flow.Launcher.Core\Flow.Launcher.Core.csproj" />
     <ProjectReference Include="..\..\Flow.Launcher.Plugin\Flow.Launcher.Plugin.csproj" />
   </ItemGroup>
 

Plugins/Flow.Launcher.Plugin.PluginsManager/Main.cs

@@ -37,20 +37,10 @@ namespace Flow.Launcher.Plugin.PluginsManager
             Settings = viewModel.Settings;
             contextMenu = new ContextMenu(Context);
             pluginManager = new PluginsManager(Context, Settings);
-            var updateManifestTask = pluginManager.UpdateManifest();
-            _ = updateManifestTask.ContinueWith(t =>
-            {
-                if (t.IsCompletedSuccessfully)
-                {
-                    lastUpdateTime = DateTime.Now;
-                }
-                else
-                {
-                    context.API.ShowMsg("Plugin Manifest Download Fail.",
-                    "Please check if you can connect to github.com. " +
-                    "This error means you may not be able to Install and Update Plugin.", pluginManager.icoPath, false);
-                }
-            });
+            _ = pluginManager.UpdateManifest().ContinueWith(_ =>
+             {
+                 lastUpdateTime = DateTime.Now;
+             }, TaskContinuationOptions.OnlyOnRanToCompletion);
 
             return Task.CompletedTask;
         }
@@ -69,15 +59,17 @@ namespace Flow.Launcher.Plugin.PluginsManager
 
             if ((DateTime.Now - lastUpdateTime).TotalHours > 12) // 12 hours
             {
-                await pluginManager.UpdateManifest();
-                lastUpdateTime = DateTime.Now;
+                _ = pluginManager.UpdateManifest().ContinueWith(t =>
+                {
+                    lastUpdateTime = DateTime.Now;
+                }, TaskContinuationOptions.OnlyOnRanToCompletion);
             }
 
             return search switch
             {
                 var s when s.StartsWith(Settings.HotKeyInstall) => await pluginManager.RequestInstallOrUpdate(s, token),
                 var s when s.StartsWith(Settings.HotkeyUninstall) => pluginManager.RequestUninstall(s),
-                var s when s.StartsWith(Settings.HotkeyUpdate) => pluginManager.RequestUpdate(s),
+                var s when s.StartsWith(Settings.HotkeyUpdate) => await pluginManager.RequestUpdate(s, token),
                 _ => pluginManager.GetDefaultHotKeys().Where(hotkey =>
                 {
                     hotkey.Score = StringMatcher.FuzzySearch(search, hotkey.Title).Score;

Plugins/Flow.Launcher.Plugin.PluginsManager/PluginsManager.cs

@@ -1,3 +1,4 @@
+using Flow.Launcher.Core.Plugin;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Infrastructure.Http;
 using Flow.Launcher.Infrastructure.Logger;
@@ -47,9 +48,23 @@ namespace Flow.Launcher.Plugin.PluginsManager
             Settings = settings;
         }
 
-        internal async Task UpdateManifest()
+        private Task _downloadManifestTask = Task.CompletedTask;
+
+
+        internal Task UpdateManifest()
         {
-            await pluginsManifest.DownloadManifest();
+            if (_downloadManifestTask.Status == TaskStatus.Running)
+            {
+                return _downloadManifestTask;
+            }
+            else
+            {
+                return _downloadManifestTask = pluginsManifest.DownloadManifest().ContinueWith(t =>
+                    Context.API.ShowMsg("Plugin Manifest Download Fail.",
+                    "Please check if you can connect to github.com. " +
+                    "This error means you may not be able to Install and Update Plugin.", icoPath, false),
+                    TaskContinuationOptions.OnlyOnFaulted);
+            }
         }
 
         internal List<Result> GetDefaultHotKeys()
@@ -150,8 +165,15 @@ namespace Flow.Launcher.Plugin.PluginsManager
             Context.API.RestartApp();
         }
 
-        internal List<Result> RequestUpdate(string search)
+        internal async ValueTask<List<Result>> RequestUpdate(string search, CancellationToken token)
         {
+            if (!pluginsManifest.UserPlugins.Any())
+            {
+                await UpdateManifest();
+            }
+
+            token.ThrowIfCancellationRequested();
+
             var autocompletedResults = AutoCompleteReturnAllResults(search,
                 Settings.HotkeyUpdate,
                 "Update",
@@ -275,20 +297,14 @@ namespace Flow.Launcher.Plugin.PluginsManager
                 .ToList();
         }
 
-        private Task _downloadManifestTask = Task.CompletedTask;
-
         internal async ValueTask<List<Result>> RequestInstallOrUpdate(string searchName, CancellationToken token)
         {
-            if (!pluginsManifest.UserPlugins.Any() &&
-                _downloadManifestTask.Status != TaskStatus.Running)
+            if (!pluginsManifest.UserPlugins.Any())
             {
-                _downloadManifestTask = pluginsManifest.DownloadManifest();
+                await UpdateManifest();
             }
 
-            await _downloadManifestTask;
-
-            if (token.IsCancellationRequested)
-                return null;
+            token.ThrowIfCancellationRequested();
 
             var searchNameWithoutKeyword = searchName.Replace(Settings.HotKeyInstall, string.Empty).Trim();
 
@@ -400,6 +416,9 @@ namespace Flow.Launcher.Plugin.PluginsManager
 
         private void Uninstall(PluginMetadata plugin)
         {
+            PluginManager.Settings.Plugins.Remove(plugin.ID);
+            PluginManager.AllPlugins.RemoveAll(p => p.Metadata.ID == plugin.ID);
+
             // Marked for deletion. Will be deleted on next start up
             using var _ = File.CreateText(Path.Combine(plugin.PluginDirectory, "NeedDelete.txt"));
         }

Plugins/Flow.Launcher.Plugin.PluginsManager/plugin.json

@@ -6,7 +6,7 @@
   "Name": "Plugins Manager",
   "Description": "Management of installing, uninstalling or updating Flow Launcher plugins",
   "Author": "Jeremy Wu",
-  "Version": "1.6.3",
+  "Version": "1.7.0",
   "Language": "csharp",
   "Website": "https://github.com/Flow-Launcher/Flow.Launcher",
   "ExecuteFileName": "Flow.Launcher.Plugin.PluginsManager.dll",

Plugins/Flow.Launcher.Plugin.Program/Flow.Launcher.Plugin.Program.csproj

@@ -40,17 +40,6 @@
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
   </ItemGroup>
-
-  <ItemGroup>
-    <Reference Include="AppxPackagingTlb">
-      <HintPath>.\AppxPackagingTlb.dll</HintPath>
-      <EmbedInteropTypes>True</EmbedInteropTypes>
-    </Reference>
-    <Reference Include="ShObjIdlTlb">
-      <HintPath>.\ShObjIdlTlb.dll</HintPath>
-      <EmbedInteropTypes>True</EmbedInteropTypes>
-    </Reference>
-  </ItemGroup>
   
   <ItemGroup>
     <Content Include="Languages\*.xaml">

Plugins/Flow.Launcher.Plugin.Program/Main.cs

@@ -228,7 +228,6 @@ namespace Flow.Launcher.Plugin.Program
 
         public static void StartProcess(Func<ProcessStartInfo, Process> runProcess, ProcessStartInfo info)
         {
-            bool hide;
             try
             {
                 runProcess(info);

Plugins/Flow.Launcher.Plugin.Program/Programs/ApplicationActivationHelper.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text.RegularExpressions;
+
+namespace Flow.Launcher.Plugin.Program.Programs
+{
+    public class ApplicationActivationHelper
+    {
+        // Reference : https://github.com/MicrosoftEdge/edge-launcher/blob/108e63df0b4cb5cd9d5e45aa7a264690851ec51d/MIcrosoftEdgeLauncherCsharp/Program.cs
+        public enum ActivateOptions
+        {
+            None = 0x00000000,
+            DesignMode = 0x00000001,
+            NoErrorUI = 0x00000002,
+            NoSplashScreen = 0x00000004,
+        }
+
+        /// ApplicationActivationManager
+        [ComImport, Guid("2e941141-7f97-4756-ba1d-9decde894a3d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        interface IApplicationActivationManager
+        {
+            IntPtr ActivateApplication([In] string appUserModelId, [In] string arguments, [In] ActivateOptions options, [Out] out uint processId);
+            IntPtr ActivateForFile([In] string appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] string verb, [Out] out uint processId);
+            IntPtr ActivateForProtocol([In] string appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out uint processId);
+        }
+
+        // Application Activation Manager Class
+        [ComImport, Guid("45BA127D-10A8-46EA-8AB7-56EA9078943C")]
+        public class ApplicationActivationManager : IApplicationActivationManager
+        {
+
+            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)/*, PreserveSig*/]
+            public extern IntPtr ActivateApplication([In] string appUserModelId, [In] string arguments, [In] ActivateOptions options, [Out] out uint processId);
+
+            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
+            public extern IntPtr ActivateForFile([In] string appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] string verb, [Out] out uint processId);
+
+            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
+            public extern IntPtr ActivateForProtocol([In] string appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out uint processId);
+        }
+    }
+}

Plugins/Flow.Launcher.Plugin.Program/Programs/AppxPackageHelper.cs

@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+using Windows.Storage;
+
+namespace Flow.Launcher.Plugin.Program.Programs
+{
+    public class AppxPackageHelper
+    {
+        // This function returns a list of attributes of applications
+        public List<IAppxManifestApplication> getAppsFromManifest(IStream stream)
+        {
+            List<IAppxManifestApplication> apps = new List<IAppxManifestApplication>();
+            var appxFactory = new AppxFactory();
+            var reader = ((IAppxFactory)appxFactory).CreateManifestReader(stream);
+            var manifestApps = reader.GetApplications();
+            while (manifestApps.GetHasCurrent())
+            {
+                string appListEntry;
+                var manifestApp = manifestApps.GetCurrent();
+                manifestApp.GetStringValue("AppListEntry", out appListEntry);
+                if (appListEntry != "none")
+                {
+                    apps.Add(manifestApp);
+                }
+                manifestApps.MoveNext();
+            }
+            return apps;
+        }
+
+        // Reference : https://stackoverflow.com/questions/32122679/getting-icon-of-modern-windows-app-from-a-desktop-application
+        [Guid("5842a140-ff9f-4166-8f5c-62f5b7b0c781"), ComImport]
+        public class AppxFactory
+        {
+        }
+
+        [Guid("BEB94909-E451-438B-B5A7-D79E767B75D8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IAppxFactory
+        {
+            void _VtblGap0_2(); // skip 2 methods
+            IAppxManifestReader CreateManifestReader(IStream inputStream);
+        }
+
+        [Guid("4E1BD148-55A0-4480-A3D1-15544710637C"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IAppxManifestReader
+        {
+            void _VtblGap0_1(); // skip 1 method
+            IAppxManifestProperties GetProperties();
+            void _VtblGap1_5(); // skip 5 methods
+            IAppxManifestApplicationsEnumerator GetApplications();
+        }
+
+        [Guid("9EB8A55A-F04B-4D0D-808D-686185D4847A"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IAppxManifestApplicationsEnumerator
+        {
+            IAppxManifestApplication GetCurrent();
+            bool GetHasCurrent();
+            bool MoveNext();
+        }
+
+        [Guid("5DA89BF4-3773-46BE-B650-7E744863B7E8"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IAppxManifestApplication
+        {
+            [PreserveSig]
+            int GetStringValue([MarshalAs(UnmanagedType.LPWStr)] string name, [MarshalAs(UnmanagedType.LPWStr)] out string value);
+
+            [PreserveSig]
+            int GetAppUserModelId([MarshalAs(UnmanagedType.LPWStr)] out string value);
+        }
+
+        [Guid("03FAF64D-F26F-4B2C-AAF7-8FE7789B8BCA"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+        public interface IAppxManifestProperties
+        {
+            [PreserveSig]
+            int GetBoolValue([MarshalAs(UnmanagedType.LPWStr)]string name, out bool value);
+            [PreserveSig]
+            int GetStringValue([MarshalAs(UnmanagedType.LPWStr)] string name, [MarshalAs(UnmanagedType.LPWStr)] out string value);
+        }
+    }
+}

Plugins/Flow.Launcher.Plugin.Program/Programs/ShellLinkHelper.cs

@@ -0,0 +1,132 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+using System.IO;
+using Accessibility;
+using System.Runtime.InteropServices.ComTypes;
+using System.Security.Policy;
+
+namespace Flow.Launcher.Plugin.Program.Programs
+{
+    class ShellLinkHelper
+    {
+        [Flags()]
+        public enum SLGP_FLAGS
+        {
+            SLGP_SHORTPATH = 0x1,
+            SLGP_UNCPRIORITY = 0x2,
+            SLGP_RAWPATH = 0x4
+        }
+
+        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
+        public struct WIN32_FIND_DATAW
+        {
+            public uint dwFileAttributes;
+            public long ftCreationTime;
+            public long ftLastAccessTime;
+            public long ftLastWriteTime;
+            public uint nFileSizeHigh;
+            public uint nFileSizeLow;
+            public uint dwReserved0;
+            public uint dwReserved1;
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
+            public string cFileName;
+            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
+            public string cAlternateFileName;
+        }
+
+        [Flags()]
+        public enum SLR_FLAGS
+        {
+            SLR_NO_UI = 0x1,
+            SLR_ANY_MATCH = 0x2,
+            SLR_UPDATE = 0x4,
+            SLR_NOUPDATE = 0x8,
+            SLR_NOSEARCH = 0x10,
+            SLR_NOTRACK = 0x20,
+            SLR_NOLINKINFO = 0x40,
+            SLR_INVOKE_MSI = 0x80
+        }
+
+
+        // Reference : http://www.pinvoke.net/default.aspx/Interfaces.IShellLinkW
+        /// The IShellLink interface allows Shell links to be created, modified, and resolved
+        [ComImport(), InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("000214F9-0000-0000-C000-000000000046")]
+        interface IShellLinkW
+        {
+            /// <summary>Retrieves the path and file name of a Shell link object</summary>
+            void GetPath([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile, int cchMaxPath, ref WIN32_FIND_DATAW pfd, SLGP_FLAGS fFlags);
+            /// <summary>Retrieves the list of item identifiers for a Shell link object</summary>
+            void GetIDList(out IntPtr ppidl);
+            /// <summary>Sets the pointer to an item identifier list (PIDL) for a Shell link object.</summary>
+            void SetIDList(IntPtr pidl);
+            /// <summary>Retrieves the description string for a Shell link object</summary>
+            void GetDescription([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszName, int cchMaxName);
+            /// <summary>Sets the description for a Shell link object. The description can be any application-defined string</summary>
+            void SetDescription([MarshalAs(UnmanagedType.LPWStr)] string pszName);
+            /// <summary>Retrieves the name of the working directory for a Shell link object</summary>
+            void GetWorkingDirectory([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszDir, int cchMaxPath);
+            /// <summary>Sets the name of the working directory for a Shell link object</summary>
+            void SetWorkingDirectory([MarshalAs(UnmanagedType.LPWStr)] string pszDir);
+            /// <summary>Retrieves the command-line arguments associated with a Shell link object</summary>
+            void GetArguments([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszArgs, int cchMaxPath);
+            /// <summary>Sets the command-line arguments for a Shell link object</summary>
+            void SetArguments([MarshalAs(UnmanagedType.LPWStr)] string pszArgs);
+            /// <summary>Retrieves the hot key for a Shell link object</summary>
+            void GetHotkey(out short pwHotkey);
+            /// <summary>Sets a hot key for a Shell link object</summary>
+            void SetHotkey(short wHotkey);
+            /// <summary>Retrieves the show command for a Shell link object</summary>
+            void GetShowCmd(out int piShowCmd);
+            /// <summary>Sets the show command for a Shell link object. The show command sets the initial show state of the window.</summary>
+            void SetShowCmd(int iShowCmd);
+            /// <summary>Retrieves the location (path and index) of the icon for a Shell link object</summary>
+            void GetIconLocation([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszIconPath,
+                int cchIconPath, out int piIcon);
+            /// <summary>Sets the location (path and index) of the icon for a Shell link object</summary>
+            void SetIconLocation([MarshalAs(UnmanagedType.LPWStr)] string pszIconPath, int iIcon);
+            /// <summary>Sets the relative path to the Shell link object</summary>
+            void SetRelativePath([MarshalAs(UnmanagedType.LPWStr)] string pszPathRel, int dwReserved);
+            /// <summary>Attempts to find the target of a Shell link, even if it has been moved or renamed</summary>
+            void Resolve(ref Accessibility._RemotableHandle hwnd, SLR_FLAGS fFlags);
+            /// <summary>Sets the path and file name of a Shell link object</summary>
+            void SetPath([MarshalAs(UnmanagedType.LPWStr)] string pszFile);
+        }
+
+        [ComImport(), Guid("00021401-0000-0000-C000-000000000046")]
+        public class ShellLink
+        {
+        }
+
+        // To initialize the app description
+        public String description = String.Empty;
+
+
+        // Retrieve the target path using Shell Link
+        public string retrieveTargetPath(string path)
+        {
+            var link = new ShellLink();
+            const int STGM_READ = 0;
+            ((IPersistFile)link).Load(path, STGM_READ);
+            var hwnd = new _RemotableHandle();
+            ((IShellLinkW)link).Resolve(ref hwnd, 0);
+
+            const int MAX_PATH = 260;
+            StringBuilder buffer = new StringBuilder(MAX_PATH);
+
+            var data = new WIN32_FIND_DATAW();
+            ((IShellLinkW)link).GetPath(buffer, buffer.Capacity, ref data, SLGP_FLAGS.SLGP_SHORTPATH);
+            var target = buffer.ToString();
+
+            // To set the app description
+            if (!String.IsNullOrEmpty(target))
+            {
+                buffer = new StringBuilder(MAX_PATH);
+                ((IShellLinkW)link).GetDescription(buffer, MAX_PATH);
+                description = buffer.ToString();
+            }
+            return target;
+        }
+    }
+}

Plugins/Flow.Launcher.Plugin.Program/Programs/UWP.cs

@@ -4,6 +4,7 @@ using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
 using System.Security.Principal;
 using System.Text;
 using System.Threading.Tasks;
@@ -12,11 +13,8 @@ using System.Windows.Media.Imaging;
 using System.Xml.Linq;
 using Windows.ApplicationModel;
 using Windows.Management.Deployment;
-using AppxPackaing;
-using Shell;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Plugin.Program.Logger;
-using IStream = AppxPackaing.IStream;
 using Rect = System.Windows.Rect;
 using Flow.Launcher.Plugin.SharedModels;
 
@@ -52,33 +50,27 @@ namespace Flow.Launcher.Plugin.Program.Programs
 
         private void InitializeAppInfo()
         {
+            AppxPackageHelper _helper = new AppxPackageHelper();
             var path = Path.Combine(Location, "AppxManifest.xml");
 
             var namespaces = XmlNamespaces(path);
             InitPackageVersion(namespaces);
 
-            var appxFactory = new AppxFactory();
-            IStream stream;
             const uint noAttribute = 0x80;
             const Stgm exclusiveRead = Stgm.Read | Stgm.ShareExclusive;
-            var hResult = SHCreateStreamOnFileEx(path, exclusiveRead, noAttribute, false, null, out stream);
+            var hResult = SHCreateStreamOnFileEx(path, exclusiveRead, noAttribute, false, null, out IStream stream);
 
             if (hResult == Hresult.Ok)
             {
-                var reader = appxFactory.CreateManifestReader(stream);
-                var manifestApps = reader.GetApplications();
                 var apps = new List<Application>();
-                while (manifestApps.GetHasCurrent() != 0)
+             
+                List<AppxPackageHelper.IAppxManifestApplication> _apps = _helper.getAppsFromManifest(stream);
+                foreach(var _app in _apps)
                 {
-                    var manifestApp = manifestApps.GetCurrent();
-                    var appListEntry = manifestApp.GetStringValue("AppListEntry");
-                    if (appListEntry != "none")
-                    {
-                        var app = new Application(manifestApp, this);
-                        apps.Add(app);
-                    }
-                    manifestApps.MoveNext();
+                    var app = new Application(_app, this);
+                    apps.Add(app);
                 }
+                
                 Apps = apps.Where(a => a.AppListEntry != "none").ToArray();
             }
             else
@@ -262,6 +254,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
             public string UserModelId { get; set; }
             public string BackgroundColor { get; set; }
 
+            public string EntryPoint { get; set; }
             public string Name => DisplayName;
             public string Location => Package.Location;
 
@@ -358,15 +351,14 @@ namespace Flow.Launcher.Plugin.Program.Programs
 
             private async void Launch(IPublicAPI api)
             {
-                var appManager = new ApplicationActivationManager();
-                uint unusedPid;
+                var appManager = new ApplicationActivationHelper.ApplicationActivationManager();
                 const string noArgs = "";
-                const ACTIVATEOPTIONS noFlags = ACTIVATEOPTIONS.AO_NONE;
+                const ApplicationActivationHelper.ActivateOptions noFlags = ApplicationActivationHelper.ActivateOptions.None;
                 await Task.Run(() =>
                 {
                     try
                     {
-                        appManager.ActivateApplication(UserModelId, noArgs, noFlags, out unusedPid);
+                        appManager.ActivateApplication(UserModelId, noArgs, noFlags, out _);
                     }
                     catch (Exception)
                     {
@@ -377,13 +369,24 @@ namespace Flow.Launcher.Plugin.Program.Programs
                 });
             }
 
-            public Application(IAppxManifestApplication manifestApp, UWP package)
+            public Application(AppxPackageHelper.IAppxManifestApplication manifestApp, UWP package)
             {
-                UserModelId = manifestApp.GetAppUserModelId();
-                UniqueIdentifier = manifestApp.GetAppUserModelId();
-                DisplayName = manifestApp.GetStringValue("DisplayName");
-                Description = manifestApp.GetStringValue("Description");
-                BackgroundColor = manifestApp.GetStringValue("BackgroundColor");
+                // This is done because we cannot use the keyword 'out' along with a property
+
+                manifestApp.GetAppUserModelId(out string tmpUserModelId);
+                manifestApp.GetAppUserModelId(out string tmpUniqueIdentifier);
+                manifestApp.GetStringValue("DisplayName", out string tmpDisplayName);
+                manifestApp.GetStringValue("Description", out string tmpDescription);
+                manifestApp.GetStringValue("BackgroundColor", out string tmpBackgroundColor);
+                manifestApp.GetStringValue("EntryPoint", out string tmpEntryPoint);
+
+                UserModelId = tmpUserModelId;
+                UniqueIdentifier = tmpUniqueIdentifier;
+                DisplayName = tmpDisplayName;
+                Description = tmpDescription;
+                BackgroundColor = tmpBackgroundColor;
+                EntryPoint = tmpEntryPoint;
+
                 Package = package;
 
                 DisplayName = ResourceFromPri(package.FullName, package.Name, DisplayName);
@@ -451,7 +454,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
                 return $"{prefix}//{packageName}{key}";
             }
 
-            internal string LogoUriFromManifest(IAppxManifestApplication app)
+            internal string LogoUriFromManifest(AppxPackageHelper.IAppxManifestApplication app)
             {
                 var logoKeyFromVersion = new Dictionary<PackageVersion, string>
                 {
@@ -462,7 +465,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
                 if (logoKeyFromVersion.ContainsKey(Package.Version))
                 {
                     var key = logoKeyFromVersion[Package.Version];
-                    var logoUri = app.GetStringValue(key);
+                    app.GetStringValue(key, out string logoUri);
                     return logoUri;
                 }
                 else

Plugins/Flow.Launcher.Plugin.Program/Programs/Win32.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
@@ -8,11 +7,13 @@ using System.Security;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.Win32;
-using Shell;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Plugin.Program.Logger;
 using Flow.Launcher.Plugin.SharedCommands;
 using Flow.Launcher.Plugin.SharedModels;
+using Flow.Launcher.Infrastructure.Logger;
+using System.Diagnostics;
+using Stopwatch = Flow.Launcher.Infrastructure.Stopwatch;
 
 namespace Flow.Launcher.Plugin.Program.Programs
 {
@@ -23,6 +24,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
         public string UniqueIdentifier { get; set; }
         public string IcoPath { get; set; }
         public string FullPath { get; set; }
+        public string LnkResolvedPath { get; set; }
         public string ParentDirectory { get; set; }
         public string ExecutableName { get; set; }
         public string Description { get; set; }
@@ -31,49 +33,64 @@ namespace Flow.Launcher.Plugin.Program.Programs
         public string Location => ParentDirectory;
 
         private const string ShortcutExtension = "lnk";
-        private const string ApplicationReferenceExtension = "appref-ms";
         private const string ExeExtension = "exe";
 
 
         public Result Result(string query, IPublicAPI api)
         {
             string title;
-            MatchResult matchResult;
+
+            var nameMatchResult = StringMatcher.FuzzySearch(query, Name);
+            var descriptionMatchResult = StringMatcher.FuzzySearch(query, Description);
+
+            var pathMatchResult = new MatchResult(false, 0, new List<int>(), 0);
+            if (ExecutableName != null) // only lnk program will need this one
+                pathMatchResult = StringMatcher.FuzzySearch(query, ExecutableName);
+
+            MatchResult matchResult = nameMatchResult;
+
+            if (nameMatchResult.Score < descriptionMatchResult.Score)
+                matchResult = descriptionMatchResult;
+
+            if (!matchResult.IsSearchPrecisionScoreMet())
+            {
+                if (pathMatchResult.IsSearchPrecisionScoreMet())
+                    matchResult = pathMatchResult;
+                else return null;
+            }
 
             // We suppose Name won't be null
             if (Description == null || Name.StartsWith(Description))
             {
                 title = Name;
-                matchResult = StringMatcher.FuzzySearch(query, title);
             }
             else if (Description.StartsWith(Name))
             {
                 title = Description;
-                matchResult = StringMatcher.FuzzySearch(query, Description);
             }
             else
             {
                 title = $"{Name}: {Description}";
-                var nameMatch = StringMatcher.FuzzySearch(query, Name);
-                var desciptionMatch = StringMatcher.FuzzySearch(query, Description);
-                if (desciptionMatch.Score > nameMatch.Score)
+
+                if (matchResult == descriptionMatchResult)
                 {
-                    for (int i = 0; i < desciptionMatch.MatchData.Count; i++)
+                    for (int i = 0; i < descriptionMatchResult.MatchData.Count; i++)
                     {
-                        desciptionMatch.MatchData[i] += Name.Length + 2; // 2 is ": "
+                        matchResult.MatchData[i] += Name.Length + 2; // 2 is ": "
                     }
-                    matchResult = desciptionMatch;
                 }
-                else matchResult = nameMatch;
             }
 
-            if (!matchResult.Success) return null;
-
+            if (matchResult == pathMatchResult)
+            {
+                // path Match won't have valid highlight data
+                matchResult.MatchData = new List<int>();
+            }
 
             var result = new Result
             {
                 Title = title,
-                SubTitle = FullPath,
+                SubTitle = LnkResolvedPath ?? FullPath,
                 IcoPath = IcoPath,
                 Score = matchResult.Score,
                 TitleHighlightData = matchResult.MatchData,
@@ -82,7 +99,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
                 {
                     var info = new ProcessStartInfo
                     {
-                        FileName = FullPath,
+                        FileName = LnkResolvedPath ?? FullPath,
                         WorkingDirectory = ParentDirectory,
                         UseShellExecute = true
                     };
@@ -144,19 +161,19 @@ namespace Flow.Launcher.Plugin.Program.Programs
                     Action = _ =>
                     {
                         var args = !string.IsNullOrWhiteSpace(Main._settings.CustomizedArgs)
-                                    ? Main._settings.CustomizedArgs
-                                        .Replace("%s",$"\"{ParentDirectory}\"")
-                                        .Replace("%f",$"\"{FullPath}\"")
-                                    : Main._settings.CustomizedExplorer==Settings.Explorer
-                                        ? $"/select,\"{FullPath}\""
-                                        : Settings.ExplorerArgs;
+                            ? Main._settings.CustomizedArgs
+                                .Replace("%s", $"\"{ParentDirectory}\"")
+                                .Replace("%f", $"\"{FullPath}\"")
+                            : Main._settings.CustomizedExplorer == Settings.Explorer
+                                ? $"/select,\"{FullPath}\""
+                                : Settings.ExplorerArgs;
 
                         Main.StartProcess(Process.Start,
-                                            new ProcessStartInfo(
-                                                !string.IsNullOrWhiteSpace(Main._settings.CustomizedExplorer)
-                                                ? Main._settings.CustomizedExplorer
-                                                : Settings.Explorer,
-                                                args));
+                            new ProcessStartInfo(
+                                !string.IsNullOrWhiteSpace(Main._settings.CustomizedExplorer)
+                                    ? Main._settings.CustomizedExplorer
+                                    : Settings.Explorer,
+                                args));
 
                         return true;
                     },
@@ -167,10 +184,9 @@ namespace Flow.Launcher.Plugin.Program.Programs
         }
 
 
-
         public override string ToString()
         {
-            return ExecutableName;
+            return Name;
         }
 
         private static Win32 Win32Program(string path)
@@ -193,7 +209,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
             catch (Exception e) when (e is SecurityException || e is UnauthorizedAccessException)
             {
                 ProgramLogger.LogException($"|Win32|Win32Program|{path}" +
-                                            $"|Permission denied when trying to load the program from {path}", e);
+                                           $"|Permission denied when trying to load the program from {path}", e);
 
                 return new Win32() { Valid = false, Enabled = false };
             }
@@ -204,27 +220,21 @@ namespace Flow.Launcher.Plugin.Program.Programs
             var program = Win32Program(path);
             try
             {
-                var link = new ShellLink();
-                const uint STGM_READ = 0;
-                ((IPersistFile)link).Load(path, STGM_READ);
-                var hwnd = new _RemotableHandle();
-                link.Resolve(ref hwnd, 0);
-
                 const int MAX_PATH = 260;
                 StringBuilder buffer = new StringBuilder(MAX_PATH);
+                ShellLinkHelper _helper = new ShellLinkHelper();
+                string target = _helper.retrieveTargetPath(path);
 
-                var data = new _WIN32_FIND_DATAW();
-                const uint SLGP_SHORTPATH = 1;
-                link.GetPath(buffer, buffer.Capacity, ref data, SLGP_SHORTPATH);
-                var target = buffer.ToString();
                 if (!string.IsNullOrEmpty(target))
                 {
                     var extension = Extension(target);
                     if (extension == ExeExtension && File.Exists(target))
                     {
-                        buffer = new StringBuilder(MAX_PATH);
-                        link.GetDescription(buffer, MAX_PATH);
-                        var description = buffer.ToString();
+                        program.LnkResolvedPath = program.FullPath;
+                        program.FullPath = Path.GetFullPath(target).ToLower();
+                        program.ExecutableName = Path.GetFileName(target);
+
+                        var description = _helper.description;
                         if (!string.IsNullOrEmpty(description))
                         {
                             program.Description = description;
@@ -239,13 +249,15 @@ namespace Flow.Launcher.Plugin.Program.Programs
                         }
                     }
                 }
+
                 return program;
             }
             catch (COMException e)
             {
                 // C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MiracastView.lnk always cause exception
                 ProgramLogger.LogException($"|Win32|LnkProgram|{path}" +
-                                                "|Error caused likely due to trying to get the description of the program", e);
+                                           "|Error caused likely due to trying to get the description of the program",
+                    e);
 
                 program.Valid = false;
                 return program;
@@ -275,7 +287,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
             catch (Exception e) when (e is SecurityException || e is UnauthorizedAccessException)
             {
                 ProgramLogger.LogException($"|Win32|ExeProgram|{path}" +
-                                            $"|Permission denied when trying to load the program from {path}", e);
+                                           $"|Permission denied when trying to load the program from {path}", e);
 
                 return new Win32() { Valid = false, Enabled = false };
             }
@@ -284,28 +296,13 @@ namespace Flow.Launcher.Plugin.Program.Programs
         private static IEnumerable<string> ProgramPaths(string directory, string[] suffixes)
         {
             if (!Directory.Exists(directory))
-                return new string[] { };
-            try
-            {
-                var paths = Directory.EnumerateFiles(directory, "*", new EnumerationOptions
-                {
-                    IgnoreInaccessible = true,
-                    RecurseSubdirectories = true
-                })
-                                     .Where(x => suffixes.Contains(Extension(x)));
+                return Enumerable.Empty<string>();
 
-                return paths;
-            }
-            catch (DirectoryNotFoundException e)
+            return Directory.EnumerateFiles(directory, "*", new EnumerationOptions
             {
-                ProgramLogger.LogException($"Directory not found {directory}", e);
-                return new string[] { };
-            }
-            catch (Exception e) when (e is SecurityException || e is UnauthorizedAccessException)
-            {
-                ProgramLogger.LogException($"Permission denied {directory}", e);
-                return new string[] { };
-            }
+                IgnoreInaccessible = true,
+                RecurseSubdirectories = true
+            }).Where(x => suffixes.Contains(Extension(x)));
         }
 
         private static string Extension(string path)
@@ -321,14 +318,13 @@ namespace Flow.Launcher.Plugin.Program.Programs
             }
         }
 
-        private static ParallelQuery<Win32> UnregisteredPrograms(List<Settings.ProgramSource> sources, string[] suffixes)
+        private static IEnumerable<Win32> UnregisteredPrograms(List<Settings.ProgramSource> sources, string[] suffixes)
         {
-            var paths = sources.Where(s => Directory.Exists(s.Location) && s.Enabled)
-                .SelectMany(s => ProgramPaths(s.Location, suffixes))
-                .Where(t1 => !Main._settings.DisabledProgramSources.Any(x => t1 == x.UniqueIdentifier))
+            var paths = ExceptDisabledSource(sources.Where(s => Directory.Exists(s.Location) && s.Enabled)
+                    .SelectMany(s => ProgramPaths(s.Location, suffixes)), x => x)
                 .Distinct();
 
-            var programs = paths.AsParallel().Select(x => Extension(x) switch
+            var programs = paths.Select(x => Extension(x) switch
             {
                 ExeExtension => ExeProgram(x),
                 ShortcutExtension => LnkProgram(x),
@@ -339,7 +335,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
             return programs;
         }
 
-        private static ParallelQuery<Win32> StartMenuPrograms(string[] suffixes)
+        private static IEnumerable<Win32> StartMenuPrograms(string[] suffixes)
         {
             var disabledProgramsList = Main._settings.DisabledProgramSources;
 
@@ -350,53 +346,49 @@ namespace Flow.Launcher.Plugin.Program.Programs
 
             var toFilter = paths1.Concat(paths2);
 
-            var programs = toFilter
-                        .AsParallel()
-                        .Where(t1 => !disabledProgramsList.Any(x => x.UniqueIdentifier == t1))
-                        .Distinct()
-                        .Select(x => Extension(x) switch
-                            {
-                                ShortcutExtension => LnkProgram(x),
-                                _ => Win32Program(x)
-                            }).Where(x => x.Valid);
+            var programs = ExceptDisabledSource(toFilter.Distinct())
+                .Select(x => Extension(x) switch
+                {
+                    ShortcutExtension => LnkProgram(x),
+                    _ => Win32Program(x)
+                }).Where(x => x.Valid);
             return programs;
         }
 
-        private static ParallelQuery<Win32> AppPathsPrograms(string[] suffixes)
+        private static IEnumerable<Win32> AppPathsPrograms(string[] suffixes)
         {
             // https://msdn.microsoft.com/en-us/library/windows/desktop/ee872121
             const string appPaths = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths";
-            var programs = new List<Win32>();
-            using (var root = Registry.LocalMachine.OpenSubKey(appPaths))
+
+            IEnumerable<string> toFilter = Enumerable.Empty<string>();
+
+            using var rootMachine = Registry.LocalMachine.OpenSubKey(appPaths);
+            using var rootUser = Registry.CurrentUser.OpenSubKey(appPaths);
+
+            if (rootMachine != null)
             {
-                if (root != null)
-                {
-                    programs.AddRange(GetProgramsFromRegistry(root));
-                }
-            }
-            using (var root = Registry.CurrentUser.OpenSubKey(appPaths))
-            {
-                if (root != null)
-                {
-                    programs.AddRange(GetProgramsFromRegistry(root));
-                }
+                toFilter = toFilter.Concat(GetPathFromRegistry(rootMachine));
             }
 
-            var disabledProgramsList = Main._settings.DisabledProgramSources;
-            var toFilter = programs.AsParallel().Where(p => suffixes.Contains(Extension(p.ExecutableName)));
+            if (rootUser != null)
+            {
+                toFilter = toFilter.Concat(GetPathFromRegistry(rootUser));
+            }
 
-            var filtered = toFilter.Where(t1 => !disabledProgramsList.Any(x => x.UniqueIdentifier == t1.UniqueIdentifier)).Select(t1 => t1);
 
-            return filtered;
+            toFilter = toFilter.Distinct().Where(p => suffixes.Contains(Extension(p)));
+
+            var filtered = ExceptDisabledSource(toFilter);
+
+            return filtered.Select(GetProgramFromPath).ToList(); // ToList due to disposing issue
         }
 
-        private static IEnumerable<Win32> GetProgramsFromRegistry(RegistryKey root)
+        private static IEnumerable<string> GetPathFromRegistry(RegistryKey root)
         {
             return root
-                    .GetSubKeyNames()
-                    .Select(x => GetProgramPathFromRegistrySubKeys(root, x))
-                    .Distinct()
-                    .Select(x => GetProgramFromPath(x));
+                .GetSubKeyNames()
+                .Select(x => GetProgramPathFromRegistrySubKeys(root, x))
+                .Distinct();
         }
 
         private static string GetProgramPathFromRegistrySubKeys(RegistryKey root, string subkey)
@@ -422,7 +414,7 @@ namespace Flow.Launcher.Plugin.Program.Programs
             catch (Exception e) when (e is SecurityException || e is UnauthorizedAccessException)
             {
                 ProgramLogger.LogException($"|Win32|GetProgramPathFromRegistrySubKeys|{path}" +
-                                            $"|Permission denied when trying to load the program from {path}", e);
+                                           $"|Permission denied when trying to load the program from {path}", e);
 
                 return string.Empty;
             }
@@ -431,27 +423,74 @@ namespace Flow.Launcher.Plugin.Program.Programs
         private static Win32 GetProgramFromPath(string path)
         {
             if (string.IsNullOrEmpty(path))
-                return new Win32();
+                return null;
 
             path = Environment.ExpandEnvironmentVariables(path);
 
             if (!File.Exists(path))
-                return new Win32();
+                return null;
 
             var entry = Win32Program(path);
-            entry.ExecutableName = Path.GetFileName(path);
 
             return entry;
         }
 
+        public static IEnumerable<string> ExceptDisabledSource(IEnumerable<string> sources)
+        {
+            return ExceptDisabledSource(sources, x => x);
+        }
+
+        public static IEnumerable<TSource> ExceptDisabledSource<TSource>(IEnumerable<TSource> sources,
+            Func<TSource, string> keySelector)
+        {
+            return Main._settings.DisabledProgramSources.Count == 0
+                ? sources
+                : ExceptDisabledSourceEnumerable(sources, keySelector);
+
+            static IEnumerable<TSource> ExceptDisabledSourceEnumerable(IEnumerable<TSource> elements,
+                Func<TSource, string> selector)
+            {
+                var set = Main._settings.DisabledProgramSources.Select(x => x.UniqueIdentifier).ToHashSet();
+
+                foreach (var element in elements)
+                {
+                    if (!set.Contains(selector(element)))
+                        yield return element;
+                }
+            }
+        }
+
+        public static IEnumerable<T> DistinctBy<T, R>(IEnumerable<T> source, Func<T, R> selector)
+        {
+            var set = new HashSet<R>();
+            foreach (var item in source)
+            {
+                if (set.Add(selector(item)))
+                    yield return item;
+            }
+        }
+
+        private static Win32[] ProgramsHasher(IEnumerable<Win32> programs)
+        {
+            return programs.GroupBy(p => p.FullPath.ToLower())
+                .SelectMany(g =>
+                {
+                    if (g.Count() > 1)
+                        return DistinctBy(g.Where(p => !string.IsNullOrEmpty(p.Description)), x => x.Description);
+                    return g;
+                }).ToArray();
+        }
+
+
         public static Win32[] All(Settings settings)
         {
             try
             {
-                var programs = new List<Win32>().AsParallel();
+                var programs = Enumerable.Empty<Win32>();
 
                 var unregistered = UnregisteredPrograms(settings.ProgramSources, settings.ProgramSuffixes);
                 programs = programs.Concat(unregistered);
+
                 if (settings.EnableRegistrySource)
                 {
                     var appPaths = AppPathsPrograms(settings.ProgramSuffixes);
@@ -464,7 +503,8 @@ namespace Flow.Launcher.Plugin.Program.Programs
                     programs = programs.Concat(startMenu);
                 }
 
-                return programs.ToArray();
+
+                return ProgramsHasher(programs.Where(p => p != null));
             }
 #if DEBUG //This is to make developer aware of any unhandled exception and add in handling.
             catch (Exception e)
@@ -478,9 +518,9 @@ namespace Flow.Launcher.Plugin.Program.Programs
             {
                 ProgramLogger.LogException("|Win32|All|Not available|An unexpected error occurred", e);
 
-                return new Win32[0];
+                return Array.Empty<Win32>();
             }
 #endif
         }
     }
-}
+}

Plugins/Flow.Launcher.Plugin.Program/plugin.json

@@ -4,7 +4,7 @@
   "Name": "Program",
   "Description": "Search programs in Flow.Launcher",
   "Author": "qianlifeng",
-  "Version": "1.4.0",
+  "Version": "1.4.2",
   "Language": "csharp",
   "Website": "https://github.com/Flow-Launcher/Flow.Launcher",
   "ExecuteFileName": "Flow.Launcher.Plugin.Program.dll",

README.md

@@ -38,10 +38,11 @@ Flow Launcher. Dedicated to make your workflow flow more seamlessly. Aimed at be
 Windows may complain about security due to code not being signed, this will be completed at a later stage. If you downloaded from this repo, you are good to continue the set up. 
 
 **Integrations**
-  - If you use Python plugins:
-    - Install [Python3](https://www.python.org/downloads/), download `.exe` installer.
+  - Python plugins:
+    - Once a Python plugin has been detected at start up, you will be prompted to either select the location or allow Python 3.9.1 to automatic download and install. 
     - Add Python to `%PATH%` or set it in flow's settings.
-    - Use `pip` to install `flowlauncher`, cmd in `pip install flowlauncher`.
+    - Use `pip` to install `flowlauncher`, open cmd and type `pip install flowlauncher`.
+    - The Python plugin may require additional modules to be installed, please ensure you check by visiting the plugin's website via `pm install` + plugin name, go to context menu and select `Open website`. 
     - Start to launch your Python plugins.
   - Flow searches files and contents via Windows Index Search, to use Everything, download the plugin [here](https://github.com/Flow-Launcher/Flow.Launcher.Plugin.Everything/releases/latest).
 
@@ -51,6 +52,7 @@ Windows may complain about security due to code not being signed, this will be c
 - Open context menu: on the selected result, press <kbd>Ctrl</kbd>+<kbd>O</kbd>/<kbd>Shift</kbd>+<kbd>Enter</kbd>.
 - Cancel/Return to previous screen: <kbd>Esc</kbd>.
 - Install/Uninstall/Update plugins: in the search window, type `pm install`/`pm uninstall`/`pm update` + the plugin name.
+- Press `F5` while in the query window to reload all plugin data.
 - Saved user settings are located:
   - If using roaming: `%APPDATA%\FlowLauncher`
   - If using portable, by default: `%localappdata%\FlowLauncher\app-<VersionOfYourFlowLauncher>\UserData`