Merge pull request #363 from Flow-Launcher/dev

Release 1.8.0 | Plugin 2.0.0

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

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0-windows</TargetFramework>
     <UseWpf>true</UseWpf>
     <UseWindowsForms>true</UseWindowsForms>
     <OutputType>Library</OutputType>
@@ -16,7 +16,7 @@
   
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
+    <DebugType>portable</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>..\Output\Debug\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
@@ -53,14 +53,11 @@
   </ItemGroup>
   
   <ItemGroup>
+    <PackageReference Include="Droplex" Version="1.3.1" />
     <PackageReference Include="FSharp.Core" Version="4.7.1" />
     <PackageReference Include="squirrel.windows" Version="1.5.2" />
   </ItemGroup>
   
-  <ItemGroup>
-    <Folder Include="Properties\" />
-  </ItemGroup>
-  
   <ItemGroup>
     <ProjectReference Include="..\Flow.Launcher.Infrastructure\Flow.Launcher.Infrastructure.csproj" />
     <ProjectReference Include="..\Flow.Launcher.Plugin\Flow.Launcher.Plugin.csproj" />

Flow.Launcher.Core/Plugin/ExecutablePlugin.cs

@@ -1,5 +1,8 @@
 using System;
 using System.Diagnostics;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using Flow.Launcher.Plugin;
 
 namespace Flow.Launcher.Core.Plugin
@@ -21,17 +24,17 @@ namespace Flow.Launcher.Core.Plugin
             };
         }
 
-        protected override string ExecuteQuery(Query query)
+        protected override Task<Stream> ExecuteQueryAsync(Query query, CancellationToken token)
         {
             JsonRPCServerRequestModel request = new JsonRPCServerRequestModel
             {
                 Method = "query",
-                Parameters = new object[] { query.Search },
+                Parameters = new object[] {query.Search},
             };
 
             _startInfo.Arguments = $"\"{request}\"";
 
-            return Execute(_startInfo);
+            return ExecuteAsync(_startInfo, token);
         }
 
         protected override string ExecuteCallback(JsonRPCRequestModel rpcRequest)
@@ -40,10 +43,12 @@ namespace Flow.Launcher.Core.Plugin
             return Execute(_startInfo);
         }
 
-        protected override string ExecuteContextMenu(Result selectedResult) {
-            JsonRPCServerRequestModel request = new JsonRPCServerRequestModel {
+        protected override string ExecuteContextMenu(Result selectedResult)
+        {
+            JsonRPCServerRequestModel request = new JsonRPCServerRequestModel
+            {
                 Method = "contextmenu",
-                Parameters = new object[] { selectedResult.ContextData },
+                Parameters = new object[] {selectedResult.ContextData},
             };
 
             _startInfo.Arguments = $"\"{request}\"";

Flow.Launcher.Core/Plugin/JsonPRCModel.cs

@@ -1,5 +1,4 @@
-
-/* We basically follow the Json-RPC 2.0 spec (http://www.jsonrpc.org/specification) to invoke methods between Flow Launcher and other plugins, 
+/* We basically follow the Json-RPC 2.0 spec (http://www.jsonrpc.org/specification) to invoke methods between Flow Launcher and other plugins, 
  * like python or other self-execute program. But, we added addtional infos (proxy and so on) into rpc request. Also, we didn't use the
  * "id" and "jsonrpc" in the request, since it's not so useful in our request model.
  * 
@@ -13,10 +12,12 @@
  * 
  */
 
+using Flow.Launcher.Core.Resource;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text.Json.Serialization;
 using Flow.Launcher.Plugin;
+using System.Text.Json;
 
 namespace Flow.Launcher.Core.Plugin
 {
@@ -29,12 +30,8 @@ namespace Flow.Launcher.Core.Plugin
         public string Data { get; set; }
     }
 
-    public class JsonRPCModelBase
-    {
-        public int Id { get; set; }
-    }
 
-    public class JsonRPCResponseModel : JsonRPCModelBase
+    public class JsonRPCResponseModel
     {
         public string Result { get; set; }
 
@@ -45,57 +42,23 @@ namespace Flow.Launcher.Core.Plugin
     {
         [JsonPropertyName("result")]
         public new List<JsonRPCResult> Result { get; set; }
-    }
 
-    public class JsonRPCRequestModel : JsonRPCModelBase
+        public string DebugMessage { get; set; }
+    }
+    
+    public class JsonRPCRequestModel
     {
         public string Method { get; set; }
 
         public object[] Parameters { get; set; }
 
+        private static readonly JsonSerializerOptions options = new()
+        {
+            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
+        };
         public override string ToString()
         {
-            string rpc = string.Empty;
-            if (Parameters != null && Parameters.Length > 0)
-            {
-                string parameters = Parameters.Aggregate("[", (current, o) => current + (GetParameterByType(o) + ","));
-                parameters = parameters.Substring(0, parameters.Length - 1) + "]";
-                rpc = string.Format(@"{{\""method\"":\""{0}\"",\""parameters\"":{1}", Method, parameters);
-            }
-            else
-            {
-                rpc = string.Format(@"{{\""method\"":\""{0}\"",\""parameters\"":[]", Method);
-            }
-
-            return rpc;
-
-        }
-
-        private string GetParameterByType(object parameter)
-        {
-            if (parameter == null) {
-                return "null";
-            }
-            if (parameter is string)
-            {
-                return string.Format(@"\""{0}\""", ReplaceEscapes(parameter.ToString()));
-            }
-            if (parameter is int || parameter is float || parameter is double)
-            {
-                return string.Format(@"{0}", parameter);
-            }
-            if (parameter is bool)
-            {
-                return string.Format(@"{0}", parameter.ToString().ToLower());
-            }
-            return parameter.ToString();
-        }
-
-        private string ReplaceEscapes(string str)
-        {
-            return str.Replace(@"\", @"\\") //Escapes in ProcessStartInfo
-                .Replace(@"\", @"\\") //Escapes itself when passed to client
-                .Replace(@"""", @"\\""""");
+            return JsonSerializer.Serialize(this, options);
         }
     }
 
@@ -104,11 +67,7 @@ namespace Flow.Launcher.Core.Plugin
     /// </summary>
     public class JsonRPCServerRequestModel : JsonRPCRequestModel
     {
-        public override string ToString()
-        {
-            string rpc = base.ToString();
-            return rpc + "}";
-        }
+
     }
 
     /// <summary>
@@ -117,12 +76,6 @@ namespace Flow.Launcher.Core.Plugin
     public class JsonRPCClientRequestModel : JsonRPCRequestModel
     {
         public bool DontHideAfterAction { get; set; }
-
-        public override string ToString()
-        {
-            string rpc = base.ToString();
-            return rpc + "}";
-        }
     }
 
     /// <summary>
@@ -134,4 +87,4 @@ namespace Flow.Launcher.Core.Plugin
     {
         public JsonRPCClientRequestModel JsonRPCAction { get; set; }
     }
-}
+}

Flow.Launcher.Core/Plugin/JsonRPCPlugin.cs

@@ -1,15 +1,17 @@
-using System;
+using Flow.Launcher.Core.Resource;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;
-using Flow.Launcher.Infrastructure.Exception;
 using Flow.Launcher.Infrastructure.Logger;
 using Flow.Launcher.Plugin;
+using JetBrains.Annotations;
 
 namespace Flow.Launcher.Core.Plugin
 {
@@ -17,7 +19,7 @@ namespace Flow.Launcher.Core.Plugin
     /// Represent the plugin that using JsonPRC
     /// every JsonRPC plugin should has its own plugin instance
     /// </summary>
-    internal abstract class JsonRPCPlugin : IPlugin, IContextMenu
+    internal abstract class JsonRPCPlugin : IAsyncPlugin, IContextMenu
     {
         protected PluginInitContext context;
         public const string JsonRPC = "JsonRPC";
@@ -27,24 +29,10 @@ namespace Flow.Launcher.Core.Plugin
         /// </summary>
         public abstract string SupportedLanguage { get; set; }
 
-        protected abstract string ExecuteQuery(Query query);
+        protected abstract Task<Stream> ExecuteQueryAsync(Query query, CancellationToken token);
         protected abstract string ExecuteCallback(JsonRPCRequestModel rpcRequest);
         protected abstract string ExecuteContextMenu(Result selectedResult);
 
-        public List<Result> Query(Query query)
-        {
-            string output = ExecuteQuery(query);
-            try
-            {
-                return DeserializedResult(output);
-            }
-            catch (Exception e)
-            {
-                Log.Exception($"|JsonRPCPlugin.Query|Exception when query <{query}>", e);
-                return null;
-            }
-        }
-
         public List<Result> LoadContextMenus(Result selectedResult)
         {
             string output = ExecuteContextMenu(selectedResult);
@@ -59,55 +47,94 @@ namespace Flow.Launcher.Core.Plugin
             }
         }
 
+        private static readonly JsonSerializerOptions options = new()
+        {
+            PropertyNameCaseInsensitive = true,
+            IgnoreNullValues = true,
+            Converters =
+            {
+                new JsonObjectConverter()
+            }
+        };
+
+        private async Task<List<Result>> DeserializedResultAsync(Stream output)
+        {
+            if (output == Stream.Null) return null;
+
+            var queryResponseModel = await
+                JsonSerializer.DeserializeAsync<JsonRPCQueryResponseModel>(output, options);
+
+            await output.DisposeAsync();
+            
+            return ParseResults(queryResponseModel);
+        }
+
         private List<Result> DeserializedResult(string output)
         {
-            if (!String.IsNullOrEmpty(output))
+            if (string.IsNullOrEmpty(output)) return null;
+
+            var queryResponseModel =
+                JsonSerializer.Deserialize<JsonRPCQueryResponseModel>(output, options);
+            return ParseResults(queryResponseModel);
+        }
+
+
+        private List<Result> ParseResults(JsonRPCQueryResponseModel queryResponseModel)
+        {
+            var results = new List<Result>();
+            if (queryResponseModel.Result == null) return null;
+
+            if (!string.IsNullOrEmpty(queryResponseModel.DebugMessage))
             {
-                List<Result> results = new List<Result>();
+                context.API.ShowMsg(queryResponseModel.DebugMessage);
+            }
 
-                JsonRPCQueryResponseModel queryResponseModel = JsonSerializer.Deserialize<JsonRPCQueryResponseModel>(output);
-                if (queryResponseModel.Result == null) return null;
-
-                foreach (JsonRPCResult result in queryResponseModel.Result)
+            foreach (JsonRPCResult result in queryResponseModel.Result)
+            {
+                result.Action = c =>
                 {
-                    JsonRPCResult result1 = result;
-                    result.Action = c =>
-                    {
-                        if (result1.JsonRPCAction == null) return false;
+                    if (result.JsonRPCAction == null) return false;
 
-                        if (!String.IsNullOrEmpty(result1.JsonRPCAction.Method))
+                    if (string.IsNullOrEmpty(result.JsonRPCAction.Method))
+                    {
+                        return !result.JsonRPCAction.DontHideAfterAction;
+                    }
+
+                    if (result.JsonRPCAction.Method.StartsWith("Flow.Launcher."))
+                    {
+                        ExecuteFlowLauncherAPI(result.JsonRPCAction.Method["Flow.Launcher.".Length..],
+                            result.JsonRPCAction.Parameters);
+                    }
+                    else
+                    {
+                        var actionResponse = ExecuteCallback(result.JsonRPCAction);
+
+                        if (string.IsNullOrEmpty(actionResponse))
                         {
-                            if (result1.JsonRPCAction.Method.StartsWith("Flow.Launcher."))
-                            {
-                                ExecuteFlowLauncherAPI(result1.JsonRPCAction.Method.Substring(4), result1.JsonRPCAction.Parameters);
-                            }
-                            else
-                            {
-                                string actionReponse = ExecuteCallback(result1.JsonRPCAction);
-                                JsonRPCRequestModel jsonRpcRequestModel = JsonSerializer.Deserialize<JsonRPCRequestModel>(actionReponse);
-                                if (jsonRpcRequestModel != null
-                                    && !String.IsNullOrEmpty(jsonRpcRequestModel.Method)
-                                    && jsonRpcRequestModel.Method.StartsWith("Flow.Launcher."))
-                                {
-                                    ExecuteFlowLauncherAPI(jsonRpcRequestModel.Method.Substring(4), jsonRpcRequestModel.Parameters);
-                                }
-                            }
+                            return !result.JsonRPCAction.DontHideAfterAction;
                         }
-                        return !result1.JsonRPCAction.DontHideAfterAction;
-                    };
-                    results.Add(result);
-                }
-                return results;
-            }
-            else
-            {
-                return null;
+
+                        var jsonRpcRequestModel = JsonSerializer.Deserialize<JsonRPCRequestModel>(actionResponse, options);
+
+                        if (jsonRpcRequestModel?.Method?.StartsWith("Flow.Launcher.") ?? false)
+                        {
+                            ExecuteFlowLauncherAPI(jsonRpcRequestModel.Method["Flow.Launcher.".Length..],
+                                jsonRpcRequestModel.Parameters);
+                        }
+                    }
+
+                    return !result.JsonRPCAction.DontHideAfterAction;
+                };
+                results.Add(result);
             }
+
+            return results;
         }
 
         private void ExecuteFlowLauncherAPI(string method, object[] parameters)
         {
-            MethodInfo methodInfo = PluginManager.API.GetType().GetMethod(method);
+            var parametersTypeArray = parameters.Select(param => param.GetType()).ToArray();
+            MethodInfo methodInfo = PluginManager.API.GetType().GetMethod(method, parametersTypeArray);
             if (methodInfo != null)
             {
                 try
@@ -117,9 +144,7 @@ namespace Flow.Launcher.Core.Plugin
                 catch (Exception)
                 {
 #if (DEBUG)
-                    {
-                        throw;
-                    }
+                    throw;
 #endif
                 }
             }
@@ -130,17 +155,20 @@ namespace Flow.Launcher.Core.Plugin
         /// </summary>
         /// <param name="fileName"></param>
         /// <param name="arguments"></param>
+        /// <param name="token">Cancellation Token</param>
         /// <returns></returns>
-        protected string Execute(string fileName, string arguments)
+        protected Task<Stream> ExecuteAsync(string fileName, string arguments, CancellationToken token = default)
         {
-            ProcessStartInfo start = new ProcessStartInfo();
-            start.FileName = fileName;
-            start.Arguments = arguments;
-            start.UseShellExecute = false;
-            start.CreateNoWindow = true;
-            start.RedirectStandardOutput = true;
-            start.RedirectStandardError = true;
-            return Execute(start);
+            ProcessStartInfo start = new ProcessStartInfo
+            {
+                FileName = fileName,
+                Arguments = arguments,
+                UseShellExecute = false,
+                CreateNoWindow = true,
+                RedirectStandardOutput = true,
+                RedirectStandardError = true
+            };
+            return ExecuteAsync(start, token);
         }
 
         protected string Execute(ProcessStartInfo startInfo)
@@ -148,52 +176,104 @@ namespace Flow.Launcher.Core.Plugin
             try
             {
                 using var process = Process.Start(startInfo);
-                if (process == null)
-                {
-                    Log.Error("|JsonRPCPlugin.Execute|Can't start new process");
-                    return string.Empty;
-                }
+                if (process == null) return string.Empty;
 
                 using var standardOutput = process.StandardOutput;
                 var result = standardOutput.ReadToEnd();
+
                 if (string.IsNullOrEmpty(result))
                 {
-                    using (var standardError = process.StandardError)
+                    using var standardError = process.StandardError;
+                    var error = standardError.ReadToEnd();
+                    if (!string.IsNullOrEmpty(error))
                     {
-                        var error = standardError.ReadToEnd();
-                        if (!string.IsNullOrEmpty(error))
-                        {
-                            Log.Error($"|JsonRPCPlugin.Execute|{error}");
-                            return string.Empty;
-                        }
-                        else
-                        {
-                            Log.Error("|JsonRPCPlugin.Execute|Empty standard output and standard error.");
-                            return string.Empty;
-                        }
+                        Log.Error($"|JsonRPCPlugin.Execute|{error}");
+                        return string.Empty;
                     }
-                }
-                else if (result.StartsWith("DEBUG:"))
-                {
-                    MessageBox.Show(new Form { TopMost = true }, result.Substring(6));
+
+                    Log.Error("|JsonRPCPlugin.Execute|Empty standard output and standard error.");
                     return string.Empty;
                 }
-                else
+
+                if (result.StartsWith("DEBUG:"))
                 {
-                    return result;
+                    MessageBox.Show(new Form
+                    {
+                        TopMost = true
+                    }, result.Substring(6));
+                    return string.Empty;
                 }
 
+                return result;
             }
             catch (Exception e)
             {
-                Log.Exception($"|JsonRPCPlugin.Execute|Exception for filename <{startInfo.FileName}> with argument <{startInfo.Arguments}>", e);
+                Log.Exception(
+                    $"|JsonRPCPlugin.Execute|Exception for filename <{startInfo.FileName}> with argument <{startInfo.Arguments}>",
+                    e);
                 return string.Empty;
             }
         }
 
-        public void Init(PluginInitContext ctx)
+        protected async Task<Stream> ExecuteAsync(ProcessStartInfo startInfo, CancellationToken token = default)
         {
-            context = ctx;
+            try
+            {
+                using var process = Process.Start(startInfo);
+                if (process == null)
+                {
+                    Log.Error("|JsonRPCPlugin.ExecuteAsync|Can't start new process");
+                    return Stream.Null;
+                }
+
+                var result = process.StandardOutput.BaseStream;
+
+                token.ThrowIfCancellationRequested();
+
+                if (!process.StandardError.EndOfStream)
+                {
+                    using var standardError = process.StandardError;
+                    var error = await standardError.ReadToEndAsync();
+
+                    if (!string.IsNullOrEmpty(error))
+                    {
+                        Log.Error($"|JsonRPCPlugin.ExecuteAsync|{error}");
+                        return Stream.Null;
+                    }
+
+                    Log.Error("|JsonRPCPlugin.ExecuteAsync|Empty standard output and standard error.");
+                    return Stream.Null;
+                }
+
+                return result;
+            }
+            catch (Exception e)
+            {
+                Log.Exception(
+                    $"|JsonRPCPlugin.ExecuteAsync|Exception for filename <{startInfo.FileName}> with argument <{startInfo.Arguments}>",
+                    e);
+                return Stream.Null;
+            }
+        }
+
+        public async Task<List<Result>> QueryAsync(Query query, CancellationToken token)
+        {
+            var output = await ExecuteQueryAsync(query, token);
+            try
+            {
+                return await DeserializedResultAsync(output);
+            }
+            catch (Exception e)
+            {
+                Log.Exception($"|JsonRPCPlugin.Query|Exception when query <{query}>", e);
+                return null;
+            }
+        }
+
+        public virtual Task InitAsync(PluginInitContext context)
+        {
+            this.context = context;
+            return Task.CompletedTask;
         }
     }
 }

Flow.Launcher.Core/Plugin/PluginAssemblyLoader.cs

@@ -1,5 +1,7 @@
 using Flow.Launcher.Infrastructure;
 using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Reflection;
@@ -11,17 +13,26 @@ namespace Flow.Launcher.Core.Plugin
     {
         private readonly AssemblyDependencyResolver dependencyResolver;
 
-        private readonly AssemblyDependencyResolver referencedPluginPackageDependencyResolver;
-
         private readonly AssemblyName assemblyName;
 
+        private static readonly ConcurrentDictionary<string, byte> loadedAssembly;
+
+        static PluginAssemblyLoader()
+        {
+            var currentAssemblies = AppDomain.CurrentDomain.GetAssemblies();
+            loadedAssembly = new ConcurrentDictionary<string, byte>(
+                currentAssemblies.Select(x => new KeyValuePair<string, byte>(x.FullName, default)));
+
+            AppDomain.CurrentDomain.AssemblyLoad += (sender, args) =>
+            {
+                loadedAssembly[args.LoadedAssembly.FullName] = default;
+            };
+        }
+
         internal PluginAssemblyLoader(string assemblyFilePath)
         {
             dependencyResolver = new AssemblyDependencyResolver(assemblyFilePath);
             assemblyName = new AssemblyName(Path.GetFileNameWithoutExtension(assemblyFilePath));
-
-            referencedPluginPackageDependencyResolver =
-                new AssemblyDependencyResolver(Path.Combine(Constant.ProgramDirectory, "Flow.Launcher.Plugin.dll"));
         }
 
         internal Assembly LoadAssemblyAndDependencies()
@@ -33,25 +44,24 @@ namespace Flow.Launcher.Core.Plugin
         {
             string assemblyPath = dependencyResolver.ResolveAssemblyToPath(assemblyName);
 
-            // When resolving dependencies, ignore assembly depenedencies that already exits with Flow.Launcher.Plugin
-            // Otherwise will get unexpected behaviour with plugins, e.g. JsonIgnore attribute not honored in WebSearch or other plugins
-            // that use Newtonsoft.Json
-            if (assemblyPath == null || ExistsInReferencedPluginPackage(assemblyName))
+            // When resolving dependencies, ignore assembly depenedencies that already exits with Flow.Launcher
+            // Otherwise duplicate assembly will be loaded and some weird behavior will occur, such as WinRT.Runtime.dll
+            // will fail due to loading multiple versions in process, each with their own static instance of registration state
+            if (assemblyPath == null || ExistsInReferencedPackage(assemblyName))
                 return null;
 
             return LoadFromAssemblyPath(assemblyPath);
         }
 
-        internal Type FromAssemblyGetTypeOfInterface(Assembly assembly, params Type[] types)
+        internal Type FromAssemblyGetTypeOfInterface(Assembly assembly, Type type)
         {
             var allTypes = assembly.ExportedTypes;
-
-            return allTypes.First(o => o.IsClass && !o.IsAbstract && o.GetInterfaces().Intersect(types).Any());
+            return allTypes.First(o => o.IsClass && !o.IsAbstract && o.GetInterfaces().Any(t => t == type));
         }
 
-        internal bool ExistsInReferencedPluginPackage(AssemblyName assemblyName)
+        internal bool ExistsInReferencedPackage(AssemblyName assemblyName)
         {
-            return referencedPluginPackageDependencyResolver.ResolveAssemblyToPath(assemblyName) != null;
+            return loadedAssembly.ContainsKey(assemblyName.FullName);
         }
     }
-}
+}

Flow.Launcher.Core/Plugin/PluginConfig.cs

@@ -20,7 +20,7 @@ namespace Flow.Launcher.Core.Plugin
         public static List<PluginMetadata> Parse(string[] pluginDirectories)
         {
             var allPluginMetadata = new List<PluginMetadata>();
-            var directories = pluginDirectories.SelectMany(Directory.GetDirectories);
+            var directories = pluginDirectories.SelectMany(Directory.EnumerateDirectories);
 
             // todo use linq when diable plugin is implmented since parallel.foreach + list is not thread saft
             foreach (var directory in directories)

Flow.Launcher.Core/Plugin/PluginManager.cs

@@ -7,9 +7,9 @@ using System.Threading;
 using System.Threading.Tasks;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Infrastructure.Logger;
-using Flow.Launcher.Infrastructure.Storage;
 using Flow.Launcher.Infrastructure.UserSettings;
 using Flow.Launcher.Plugin;
+using ISavable = Flow.Launcher.Plugin.ISavable;
 
 namespace Flow.Launcher.Core.Plugin
 {
@@ -21,8 +21,8 @@ namespace Flow.Launcher.Core.Plugin
         private static IEnumerable<PluginPair> _contextMenuPlugins;
 
         public static List<PluginPair> AllPlugins { get; private set; }
-        public static readonly List<PluginPair> GlobalPlugins = new List<PluginPair>();
-        public static readonly Dictionary<string, PluginPair> NonGlobalPlugins = new Dictionary<string, PluginPair>();
+        public static readonly HashSet<PluginPair> GlobalPlugins = new();
+        public static readonly Dictionary<string, PluginPair> NonGlobalPlugins = new();
 
         public static IPublicAPI API { private set; get; }
 
@@ -33,7 +33,10 @@ namespace Flow.Launcher.Core.Plugin
         /// <summary>
         /// Directories that will hold Flow Launcher plugin directory
         /// </summary>
-        private static readonly string[] Directories = { Constant.PreinstalledDirectory, DataLocation.PluginsDirectory };
+        private static readonly string[] Directories =
+        {
+            Constant.PreinstalledDirectory, DataLocation.PluginsDirectory
+        };
 
         private static void DeletePythonBinding()
         {
@@ -51,6 +54,24 @@ namespace Flow.Launcher.Core.Plugin
                 var savable = plugin.Plugin as ISavable;
                 savable?.Save();
             }
+
+            API.SavePluginSettings();
+        }
+
+        public static async ValueTask DisposePluginsAsync()
+        {
+            foreach (var pluginPair in AllPlugins)
+            {
+                switch (pluginPair.Plugin)
+                {
+                    case IDisposable disposable:
+                        disposable.Dispose();
+                        break;
+                    case IAsyncDisposable asyncDisposable:
+                        await asyncDisposable.DisposeAsync();
+                        break;
+                }
+            }
         }
 
         public static async Task ReloadData()
@@ -97,16 +118,9 @@ namespace Flow.Launcher.Core.Plugin
             {
                 try
                 {
-                    var milliseconds = pair.Plugin switch
-                    {
-                        IAsyncPlugin plugin
-                            => await Stopwatch.DebugAsync($"|PluginManager.InitializePlugins|Init method time cost for <{pair.Metadata.Name}>",
-                                                        () => plugin.InitAsync(new PluginInitContext(pair.Metadata, API))),
-                        IPlugin plugin
-                            => Stopwatch.Debug($"|PluginManager.InitializePlugins|Init method time cost for <{pair.Metadata.Name}>",
-                                        () => plugin.Init(new PluginInitContext(pair.Metadata, API))),
-                        _ => throw new ArgumentException(),
-                    };
+                    var milliseconds = await Stopwatch.DebugAsync($"|PluginManager.InitializePlugins|Init method time cost for <{pair.Metadata.Name}>",
+                        () => pair.Plugin.InitAsync(new PluginInitContext(pair.Metadata, API)));
+
                     pair.Metadata.InitTime += milliseconds;
                     Log.Info(
                         $"|PluginManager.InitializePlugins|Total init cost for <{pair.Metadata.Name}> is <{pair.Metadata.InitTime}ms>");
@@ -124,7 +138,9 @@ namespace Flow.Launcher.Core.Plugin
             _contextMenuPlugins = GetPluginsForInterface<IContextMenu>();
             foreach (var plugin in AllPlugins)
             {
-                foreach (var actionKeyword in plugin.Metadata.ActionKeywords)
+                // set distinct on each plugin's action keywords helps only firing global(*) and action keywords once where a plugin
+                // has multiple global and action keywords because we will only add them here once.
+                foreach (var actionKeyword in plugin.Metadata.ActionKeywords.Distinct())
                 {
                     switch (actionKeyword)
                     {
@@ -147,12 +163,15 @@ namespace Flow.Launcher.Core.Plugin
             }
         }
 
-        public static List<PluginPair> ValidPluginsForQuery(Query query)
+        public static ICollection<PluginPair> ValidPluginsForQuery(Query query)
         {
             if (NonGlobalPlugins.ContainsKey(query.ActionKeyword))
             {
                 var plugin = NonGlobalPlugins[query.ActionKeyword];
-                return new List<PluginPair> { plugin };
+                return new List<PluginPair>
+                {
+                    plugin
+                };
             }
             else
             {
@@ -160,7 +179,7 @@ namespace Flow.Launcher.Core.Plugin
             }
         }
 
-        public static async Task<List<Result>> QueryForPlugin(PluginPair pair, Query query, CancellationToken token)
+        public static async Task<List<Result>> QueryForPluginAsync(PluginPair pair, Query query, CancellationToken token)
         {
             var results = new List<Result>();
             try
@@ -169,22 +188,12 @@ namespace Flow.Launcher.Core.Plugin
 
                 long milliseconds = -1L;
 
-                switch (pair.Plugin)
-                {
-                    case IAsyncPlugin plugin:
-                        milliseconds = await Stopwatch.DebugAsync($"|PluginManager.QueryForPlugin|Cost for {metadata.Name}",
-                            async () => results = await plugin.QueryAsync(query, token).ConfigureAwait(false));
-                        break;
-                    case IPlugin plugin:
-                        await Task.Run(() => milliseconds = Stopwatch.Debug($"|PluginManager.QueryForPlugin|Cost for {metadata.Name}",
-                            () => results = plugin.Query(query)), token).ConfigureAwait(false);
-                        break;
-                    default:
-                        throw new ArgumentOutOfRangeException();
-                }
+                milliseconds = await Stopwatch.DebugAsync($"|PluginManager.QueryForPlugin|Cost for {metadata.Name}",
+                    async () => results = await pair.Plugin.QueryAsync(query, token).ConfigureAwait(false));
+
                 token.ThrowIfCancellationRequested();
                 if (results == null)
-                    return results;
+                    return null;
                 UpdatePluginMetadata(results, metadata, query);
 
                 metadata.QueryCount += 1;
@@ -195,11 +204,7 @@ namespace Flow.Launcher.Core.Plugin
             catch (OperationCanceledException)
             {
                 // null will be fine since the results will only be added into queue if the token hasn't been cancelled
-                return results = null;
-            }
-            catch (Exception e)
-            {
-                Log.Exception($"|PluginManager.QueryForPlugin|Exception for plugin <{pair.Metadata.Name}> when query <{query}>", e);
+                return null;
             }
 
             return results;
@@ -245,7 +250,7 @@ namespace Flow.Launcher.Core.Plugin
 
                 try
                 {
-                    results = plugin.LoadContextMenus(result);
+                    results = plugin.LoadContextMenus(result) ?? results;
                     foreach (var r in results)
                     {
                         r.PluginDirectory = pluginPair.Metadata.PluginDirectory;
@@ -266,6 +271,8 @@ namespace Flow.Launcher.Core.Plugin
 
         public static bool ActionKeywordRegistered(string actionKeyword)
         {
+            // this method is only checking for action keywords (defined as not '*') registration
+            // hence the actionKeyword != Query.GlobalPluginWildcardSign logic
             return actionKeyword != Query.GlobalPluginWildcardSign
                    && NonGlobalPlugins.ContainsKey(actionKeyword);
         }
@@ -290,7 +297,7 @@ namespace Flow.Launcher.Core.Plugin
         }
 
         /// <summary>
-        /// used to add action keyword for multiple action keyword plugin
+        /// used to remove action keyword for multiple action keyword plugin
         /// e.g. web search
         /// </summary>
         public static void RemoveActionKeyword(string id, string oldActionkeyword)
@@ -299,9 +306,7 @@ namespace Flow.Launcher.Core.Plugin
             if (oldActionkeyword == Query.GlobalPluginWildcardSign
                 && // Plugins may have multiple ActionKeywords that are global, eg. WebSearch
                 plugin.Metadata.ActionKeywords
-                    .Where(x => x == Query.GlobalPluginWildcardSign)
-                    .ToList()
-                    .Count == 1)
+                    .Count(x => x == Query.GlobalPluginWildcardSign) == 1)
             {
                 GlobalPlugins.Remove(plugin);
             }
@@ -322,4 +327,4 @@ namespace Flow.Launcher.Core.Plugin
             }
         }
     }
-}
+}

Flow.Launcher.Core/Plugin/PluginsLoader.cs

@@ -3,26 +3,27 @@ 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;
+using System.Diagnostics;
+using Stopwatch = Flow.Launcher.Infrastructure.Stopwatch;
 
 namespace Flow.Launcher.Core.Plugin
 {
     public static class PluginsLoader
     {
-        public const string PATH = "PATH";
-        public const string Python = "python";
         public const string PythonExecutable = "pythonw.exe";
 
         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;
@@ -43,23 +44,23 @@ namespace Flow.Launcher.Core.Plugin
 #if DEBUG
                         var assemblyLoader = new PluginAssemblyLoader(metadata.ExecuteFilePath);
                         var assembly = assemblyLoader.LoadAssemblyAndDependencies();
-                        var type = assemblyLoader.FromAssemblyGetTypeOfInterface(assembly, typeof(IPlugin),
+                        var type = assemblyLoader.FromAssemblyGetTypeOfInterface(assembly,
                             typeof(IAsyncPlugin));
 
-                        var plugin = Activator.CreateInstance(type);
+                        var plugin = Activator.CreateInstance(type) as IAsyncPlugin;
 #else
                         Assembly assembly = null;
-                        object plugin = null;
+                        IAsyncPlugin plugin = null;
 
                         try
                         {
                             var assemblyLoader = new PluginAssemblyLoader(metadata.ExecuteFilePath);
                             assembly = assemblyLoader.LoadAssemblyAndDependencies();
 
-                            var type = assemblyLoader.FromAssemblyGetTypeOfInterface(assembly, typeof(IPlugin), 
+                            var type = assemblyLoader.FromAssemblyGetTypeOfInterface(assembly,
                                 typeof(IAsyncPlugin));
 
-                            plugin = Activator.CreateInstance(type);
+                            plugin = Activator.CreateInstance(type) as IAsyncPlugin;
                         }
                         catch (Exception e) when (assembly == null)
                         {
@@ -77,18 +78,14 @@ namespace Flow.Launcher.Core.Plugin
                         {
                             Log.Exception($"|PluginsLoader.DotNetPlugins|The following plugin has errored and can not be loaded: <{metadata.Name}>", e);
                         }
-
+#endif
                         if (plugin == null)
                         {
                             erroredPlugins.Add(metadata.Name);
                             return;
                         }
-#endif
-                        plugins.Add(new PluginPair
-                        {
-                            Plugin = plugin,
-                            Metadata = metadata
-                        });
+
+                        plugins.Add(new PluginPair {Plugin = plugin, Metadata = metadata});
                     });
                 metadata.InitTime += milliseconds;
             }
@@ -113,73 +110,100 @@ 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
-            // PATH or from the given pythonDirectory
-            if (string.IsNullOrEmpty(pythonDirectory))
-            {
-                var paths = Environment.GetEnvironmentVariable(PATH);
-                if (paths != null)
-                {
-                    var pythonInPath = paths
-                        .Split(';')
-                        .Where(p => p.ToLower().Contains(Python))
-                        .Any();
+            if (!source.Any(o => o.Language.ToUpper() == AllowedLanguage.Python))
+                return new List<PluginPair>();
 
-                    if (pythonInPath)
-                    {
-                        Constant.PythonPath = PythonExecutable;
-                    }
-                    else
-                    {
-                        Log.Error("|PluginsLoader.PythonPlugins|Python can't be found in PATH.");
-                    }
-                }
-                else
+            if (!string.IsNullOrEmpty(settings.PythonDirectory) && FilesFolders.LocationExists(settings.PythonDirectory))
+                return SetPythonPathForPluginPairs(source, Path.Combine(settings.PythonDirectory, PythonExecutable));
+
+            var pythonPath = string.Empty;
+            
+            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
                 {
-                    Log.Error("|PluginsLoader.PythonPlugins|PATH environment variable is not set.");
+                    SelectedPath = Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles)
+                };
+
+                var result = dlg.ShowDialog();
+                if (result == DialogResult.OK)
+                {
+                    string pythonDirectory = dlg.SelectedPath;
+                    if (!string.IsNullOrEmpty(pythonDirectory))
+                    {
+                        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
             {
-                var path = Path.Combine(pythonDirectory, PythonExecutable);
-                if (File.Exists(path))
+                var installedPythonDirectory = Path.Combine(DataLocation.DataDirectory(), "PythonEmbeddable");
+
+                // Python 3.8.9 is used for Windows 7 compatibility
+                DroplexPackage.Drop(App.python_3_8_9_embeddable, installedPythonDirectory).Wait();
+
+                pythonPath = Path.Combine(installedPythonDirectory, PythonExecutable);
+                if (FilesFolders.FileExists(pythonPath))
                 {
-                    Constant.PythonPath = path;
+                    settings.PythonDirectory = installedPythonDirectory;
+                    Constant.PythonPath = pythonPath;
                 }
                 else
                 {
-                    Log.Error($"|PluginsLoader.PythonPlugins|Can't find python executable in {path}");
+                    Log.Error("PluginsLoader",
+                        $"Failed to set Python path after Droplex install, {pythonPath} does not exist",
+                        "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) || string.IsNullOrEmpty(pythonPath))
             {
+                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 SetPythonPathForPluginPairs(source, pythonPath);
         }
 
-        public static IEnumerable<PluginPair> ExecutablePlugins(IEnumerable<PluginMetadata> source)
+        private static IEnumerable<PluginPair> SetPythonPathForPluginPairs(List<PluginMetadata> source, string pythonPath)
+            =>  source
+                .Where(o => o.Language.ToUpper() == AllowedLanguage.Python)
+                .Select(metadata => new PluginPair
+                {
+                    Plugin = new PythonPlugin(pythonPath), 
+                    Metadata = metadata
+                })
+                .ToList();
+
+    public static IEnumerable<PluginPair> ExecutablePlugins(IEnumerable<PluginMetadata> source)
         {
             return source
                 .Where(o => o.Language.ToUpper() == AllowedLanguage.Executable)
                 .Select(metadata => new PluginPair
                 {
-                    Plugin = new ExecutablePlugin(metadata.ExecuteFilePath),
-                    Metadata = metadata
+                    Plugin = new ExecutablePlugin(metadata.ExecuteFilePath), Metadata = metadata
                 });
         }
     }

Flow.Launcher.Core/Plugin/PythonPlugin.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Diagnostics;
 using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Plugin;
 
@@ -26,39 +28,52 @@ namespace Flow.Launcher.Core.Plugin
             var path = Path.Combine(Constant.ProgramDirectory, JsonRPC);
             _startInfo.EnvironmentVariables["PYTHONPATH"] = path;
 
+            //Add -B flag to tell python don't write .py[co] files. Because .pyc contains location infos which will prevent python portable
+            _startInfo.ArgumentList.Add("-B");
         }
 
-        protected override string ExecuteQuery(Query query)
+        protected override Task<Stream> ExecuteQueryAsync(Query query, CancellationToken token)
         {
             JsonRPCServerRequestModel request = new JsonRPCServerRequestModel
             {
-                Method = "query",
-                Parameters = new object[] { query.Search },
+                Method = "query", Parameters = new object[] {query.Search},
             };
-            //Add -B flag to tell python don't write .py[co] files. Because .pyc contains location infos which will prevent python portable
-            _startInfo.Arguments = $"-B \"{context.CurrentPluginMetadata.ExecuteFilePath}\" \"{request}\"";
+
+            _startInfo.ArgumentList[2] = request.ToString();
+
             // todo happlebao why context can't be used in constructor
             _startInfo.WorkingDirectory = context.CurrentPluginMetadata.PluginDirectory;
 
-            return Execute(_startInfo);
+            return ExecuteAsync(_startInfo, token);
         }
 
         protected override string ExecuteCallback(JsonRPCRequestModel rpcRequest)
         {
-            _startInfo.Arguments = $"-B \"{context.CurrentPluginMetadata.ExecuteFilePath}\" \"{rpcRequest}\"";
+            _startInfo.ArgumentList[2] = rpcRequest.ToString();
             _startInfo.WorkingDirectory = context.CurrentPluginMetadata.PluginDirectory;
+            // TODO: Async Action
             return Execute(_startInfo);
         }
 
-        protected override string ExecuteContextMenu(Result selectedResult) {
-            JsonRPCServerRequestModel request = new JsonRPCServerRequestModel {
-                Method = "context_menu",
-                Parameters = new object[] { selectedResult.ContextData },
+        protected override string ExecuteContextMenu(Result selectedResult)
+        {
+            JsonRPCServerRequestModel request = new JsonRPCServerRequestModel
+            {
+                Method = "context_menu", Parameters = new object[] {selectedResult.ContextData},
             };
-            _startInfo.Arguments = $"-B \"{context.CurrentPluginMetadata.ExecuteFilePath}\" \"{request}\"";
+            _startInfo.ArgumentList[2] = request.ToString();
             _startInfo.WorkingDirectory = context.CurrentPluginMetadata.PluginDirectory;
 
+            // TODO: Async Action
             return Execute(_startInfo);
         }
+
+        public override Task InitAsync(PluginInitContext context)
+        {
+            this.context = context;
+            _startInfo.ArgumentList.Add(context.CurrentPluginMetadata.ExecuteFilePath);
+            _startInfo.ArgumentList.Add("");
+            return Task.CompletedTask;
+        }
     }
 }

Flow.Launcher.Core/Properties/AssemblyInfo.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("Flow.Launcher.Test")]

Flow.Launcher.Core/Resource/JsonObjectConverter.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Flow.Launcher.Core.Resource
+{
+    public class JsonObjectConverter : JsonConverter<object>
+    {
+        public override object Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            switch (reader.TokenType)
+            {
+                case JsonTokenType.True:
+                    return true;
+                case JsonTokenType.False:
+                    return false;
+                case JsonTokenType.Number when reader.TryGetInt32(out var i):
+                    return i;
+                case JsonTokenType.Number when reader.TryGetInt64(out var l):
+                    return l;
+                case JsonTokenType.Number:
+                    return reader.GetDouble();
+                case JsonTokenType.String when reader.TryGetDateTime(out DateTime datetime):
+                    return datetime;
+                case JsonTokenType.String:
+                    return reader.GetString();
+                default:
+                    // Use JsonElement as fallback.
+                    // Newtonsoft uses JArray or JObject.
+                    using (var document = JsonDocument.ParseValue(ref reader))
+                    {
+                        return document.RootElement.Clone();
+                    }
+            }
+        }
+
+        public override void Write(Utf8JsonWriter writer, object value, JsonSerializerOptions options)
+        {
+            throw new InvalidOperationException("Should not get here.");
+        }
+    }
+}

Flow.Launcher.Core/Resource/Theme.cs

@@ -17,6 +17,8 @@ namespace Flow.Launcher.Core.Resource
 {
     public class Theme
     {
+        private const int ShadowExtraMargin = 12;
+
         private readonly List<string> _themeDirectories = new List<string>();
         private ResourceDictionary _oldResource;
         private string _oldTheme;
@@ -26,6 +28,10 @@ namespace Flow.Launcher.Core.Resource
         private string DirectoryPath => Path.Combine(Constant.ProgramDirectory, Folder);
         private string UserDirectoryPath => Path.Combine(DataLocation.DataDirectory(), Folder);
 
+        public bool BlurEnabled { get; set; }
+
+        private double mainWindowWidth;
+
         public Theme()
         {
             _themeDirectories.Add(DirectoryPath);
@@ -86,8 +92,12 @@ namespace Flow.Launcher.Core.Resource
                     _oldTheme = Path.GetFileNameWithoutExtension(_oldResource.Source.AbsolutePath);
                 }
 
-                if (Settings.UseDropShadowEffect)
+                BlurEnabled = IsBlurTheme();
+
+                if (Settings.UseDropShadowEffect && !BlurEnabled)
                     AddDropShadowEffectToCurrentTheme();
+
+                SetBlurForWindow();
             }
             catch (DirectoryNotFoundException e)
             {
@@ -179,6 +189,21 @@ namespace Flow.Launcher.Core.Resource
                 Array.ForEach(new[] { resultItemStyle, resultSubItemStyle, resultItemSelectedStyle, resultSubItemSelectedStyle }, o => Array.ForEach(setters, p => o.Setters.Add(p)));
             }
 
+            var windowStyle = dict["WindowStyle"] as Style;
+
+            var width = windowStyle?.Setters.OfType<Setter>().Where(x => x.Property.Name == "Width")
+                .Select(x => x.Value).FirstOrDefault();
+
+            if (width == null)
+            {
+                windowStyle = dict["BaseWindowStyle"] as Style;
+
+                width = windowStyle?.Setters.OfType<Setter>().Where(x => x.Property.Name == "Width")
+                .Select(x => x.Value).FirstOrDefault();
+            }
+
+            mainWindowWidth = (double)width;
+
             return dict;
         }
 
@@ -224,17 +249,54 @@ namespace Flow.Launcher.Core.Resource
                 BlurRadius = 15
             };
 
+            var marginSetter = windowBorderStyle.Setters.FirstOrDefault(setterBase => setterBase is Setter setter && setter.Property == Border.MarginProperty) as Setter;
+            if (marginSetter == null)
+            {
+                marginSetter = new Setter()
+                {
+                    Property = Border.MarginProperty,
+                    Value = new Thickness(ShadowExtraMargin),
+                };
+                windowBorderStyle.Setters.Add(marginSetter);
+            }
+            else
+            {
+                var baseMargin = (Thickness) marginSetter.Value;
+                var newMargin = new Thickness(
+                    baseMargin.Left + ShadowExtraMargin,
+                    baseMargin.Top + ShadowExtraMargin,
+                    baseMargin.Right + ShadowExtraMargin,
+                    baseMargin.Bottom + ShadowExtraMargin);
+                marginSetter.Value = newMargin;
+            }
+
             windowBorderStyle.Setters.Add(effectSetter);
 
             UpdateResourceDictionary(dict);
         }
 
-        public void RemoveDropShadowEffectToCurrentTheme()
+        public void RemoveDropShadowEffectFromCurrentTheme()
         {
             var dict = CurrentThemeResourceDictionary();
             var windowBorderStyle = dict["WindowBorderStyle"] as Style;
 
-            dict.Remove(Border.EffectProperty);
+            var effectSetter = windowBorderStyle.Setters.FirstOrDefault(setterBase => setterBase is Setter setter && setter.Property == Border.EffectProperty) as Setter;
+            var marginSetter = windowBorderStyle.Setters.FirstOrDefault(setterBase => setterBase is Setter setter && setter.Property == Border.MarginProperty) as Setter;
+            
+            if(effectSetter != null)
+            {
+                windowBorderStyle.Setters.Remove(effectSetter);
+            }
+            if (marginSetter != null)
+            {
+                var currentMargin = (Thickness)marginSetter.Value;
+                var newMargin = new Thickness(
+                    currentMargin.Left - ShadowExtraMargin,
+                    currentMargin.Top - ShadowExtraMargin,
+                    currentMargin.Right - ShadowExtraMargin,
+                    currentMargin.Bottom - ShadowExtraMargin);
+                marginSetter.Value = newMargin;
+            }
 
             UpdateResourceDictionary(dict);
         }
@@ -281,35 +343,39 @@ namespace Flow.Launcher.Core.Resource
         /// </summary>
         public void SetBlurForWindow()
         {
+            if (BlurEnabled)
+            {
+                SetWindowAccent(Application.Current.MainWindow, AccentState.ACCENT_ENABLE_BLURBEHIND);
+            }
+            else
+            {
+                SetWindowAccent(Application.Current.MainWindow, AccentState.ACCENT_DISABLED);
+            }
+        }
 
-            // Exception of FindResource can't be cathed if global exception handle is set
+        private bool IsBlurTheme()
+        {
             if (Environment.OSVersion.Version >= new Version(6, 2))
             {
                 var resource = Application.Current.TryFindResource("ThemeBlurEnabled");
-                bool blur;
-                if (resource is bool)
-                {
-                    blur = (bool)resource;
-                }
-                else
-                {
-                    blur = false;
-                }
 
-                if (blur)
-                {
-                    SetWindowAccent(Application.Current.MainWindow, AccentState.ACCENT_ENABLE_BLURBEHIND);
-                }
-                else
-                {
-                    SetWindowAccent(Application.Current.MainWindow, AccentState.ACCENT_DISABLED);
-                }
+                if (resource is bool)
+                    return (bool)resource;
+
+                return false;
             }
+
+            return false;
         }
 
         private void SetWindowAccent(Window w, AccentState state)
         {
             var windowHelper = new WindowInteropHelper(w);
+            
+            // this determines the width of the main query window
+            w.Width = mainWindowWidth;
+            windowHelper.EnsureHandle();
+            
             var accent = new AccentPolicy { AccentState = state };
             var accentStructSize = Marshal.SizeOf(accent);
 

Flow.Launcher.Core/Updater.cs

@@ -87,7 +87,7 @@ namespace Flow.Launcher.Core
                     UpdateManager.RestartApp(Constant.ApplicationFileName);
                 }
             }
-            catch (Exception e) when (e is HttpRequestException || e is WebException || e is SocketException || e is TaskCanceledException)
+            catch (Exception e) when (e is HttpRequestException || e is WebException || e is SocketException || e.InnerException is TimeoutException)
             {
                 Log.Exception($"|Updater.UpdateApp|Check your connection and proxy settings to github-cloud.s3.amazonaws.com.", e);
                 api.ShowMsg(api.GetTranslation("update_flowlauncher_fail"),

Flow.Launcher.Infrastructure/Constant.cs

@@ -21,6 +21,7 @@ namespace Flow.Launcher.Infrastructure
         public static readonly string PreinstalledDirectory = Path.Combine(ProgramDirectory, Plugins);
         public const string Issue = "https://github.com/Flow-Launcher/Flow.Launcher/issues/new";
         public static readonly string Version = FileVersionInfo.GetVersionInfo(Assembly.Location.NonNull()).ProductVersion;
+        public const string Documentation = "https://flow-launcher.github.io/docs/#/usage-tips";
 
         public static readonly int ThumbnailSize = 64;
         private static readonly string ImagesDirectory = Path.Combine(ProgramDirectory, "Images");

Flow.Launcher.Infrastructure/Flow.Launcher.Infrastructure.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0-windows</TargetFramework>
     <ProjectGuid>{4FD29318-A8AB-4D8F-AA47-60BC241B8DA3}</ProjectGuid>
     <OutputType>Library</OutputType>
     <UseWpf>true</UseWpf>
@@ -15,7 +15,7 @@
 
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
+    <DebugType>portable</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>..\Output\Debug\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
@@ -49,8 +49,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NLog.Schema" Version="4.7.0-rc1" />
-    <PackageReference Include="NLog.Web.AspNetCore" Version="4.9.0" />
+    <PackageReference Include="Ben.Demystifier" Version="0.4.1" />
+    <PackageReference Include="Microsoft.VisualStudio.Threading" Version="16.10.56" />
+    <PackageReference Include="NLog" Version="4.7.10" />
+    <PackageReference Include="NLog.Schema" Version="4.7.10" />
+    <PackageReference Include="NLog.Web.AspNetCore" Version="4.12.0" />
     <PackageReference Include="System.Drawing.Common" Version="4.7.0" />
     <PackageReference Include="ToolGood.Words.Pinyin" Version="3.0.1.4" />
   </ItemGroup>

Flow.Launcher.Infrastructure/Http/Http.cs

@@ -90,7 +90,7 @@ 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);
@@ -150,7 +150,7 @@ 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/Logger/Log.cs

@@ -5,6 +5,11 @@ using NLog;
 using NLog.Config;
 using NLog.Targets;
 using Flow.Launcher.Infrastructure.UserSettings;
+using JetBrains.Annotations;
+using NLog.Fluent;
+using NLog.Targets.Wrappers;
+using System.Runtime.ExceptionServices;
+using System.Text;
 
 namespace Flow.Launcher.Infrastructure.Logger
 {
@@ -23,15 +28,37 @@ namespace Flow.Launcher.Infrastructure.Logger
             }
 
             var configuration = new LoggingConfiguration();
-            var target = new FileTarget();
-            configuration.AddTarget("file", target);
-            target.FileName = CurrentLogDirectory.Replace(@"\", "/") + "/${shortdate}.txt";
+
+            const string layout = 
+                @"${date:format=HH\:mm\:ss.ffffK} - " +
+                @"${level:uppercase=true:padding=-5} - ${logger} - ${message:l}" +
+                @"${onexception:${newline}" +
+                    @"EXCEPTION OCCURS\: ${exception:format=tostring}${newline}}";
+            
+            var fileTarget = new FileTarget
+            {
+                FileName = CurrentLogDirectory.Replace(@"\", "/") + "/${shortdate}.txt",
+                Layout = layout
+            };
+
+            var fileTargetASyncWrapper = new AsyncTargetWrapper(fileTarget);
+
+            var debugTarget = new OutputDebugStringTarget
+            {
+                Layout = layout
+            };
+
+            configuration.AddTarget("file", fileTargetASyncWrapper);
+            configuration.AddTarget("debug", debugTarget);
+
 #if DEBUG
-            var rule = new LoggingRule("*", LogLevel.Debug, target);
+            var fileRule = new LoggingRule("*", LogLevel.Debug, fileTargetASyncWrapper);
+            var debugRule = new LoggingRule("*", LogLevel.Debug, debugTarget);
+            configuration.LoggingRules.Add(debugRule);
 #else
-            var rule = new LoggingRule("*", LogLevel.Info, target);
+            var fileRule = new LoggingRule("*", LogLevel.Info, fileTargetASyncWrapper);
 #endif
-            configuration.LoggingRules.Add(rule);
+            configuration.LoggingRules.Add(fileRule);
             LogManager.Configuration = configuration;
         }
 
@@ -39,7 +66,6 @@ namespace Flow.Launcher.Infrastructure.Logger
         {
             var logger = LogManager.GetLogger("FaultyLogger");
             message = $"Wrong logger message format <{message}>";
-            System.Diagnostics.Debug.WriteLine($"FATAL|{message}");
             logger.Fatal(message);
         }
 
@@ -51,12 +77,11 @@ namespace Flow.Launcher.Infrastructure.Logger
         }
 
 
-
-        [MethodImpl(MethodImplOptions.Synchronized)]
         public static void Exception(string className, string message, System.Exception exception, [CallerMemberName] string methodName = "")
         {
+            exception = exception.Demystify();
 #if DEBUG
-            throw exception;
+            ExceptionDispatchInfo.Capture(exception).Throw();
 #else
             var classNameWithMethod = CheckClassAndMessageAndReturnFullClassWithMethod(className, message, methodName);
 
@@ -90,23 +115,9 @@ namespace Flow.Launcher.Infrastructure.Logger
         {
             var logger = LogManager.GetLogger(classAndMethod);
 
-            System.Diagnostics.Debug.WriteLine($"ERROR|{message}");
+            var messageBuilder = new StringBuilder();
 
-            logger.Error("-------------------------- Begin exception --------------------------");
-            logger.Error(message);
-
-            do
-            {
-                logger.Error($"Exception full name:\n <{e.GetType().FullName}>");
-                logger.Error($"Exception message:\n <{e.Message}>");
-                logger.Error($"Exception stack trace:\n <{e.StackTrace}>");
-                logger.Error($"Exception source:\n <{e.Source}>");
-                logger.Error($"Exception target site:\n <{e.TargetSite}>");
-                logger.Error($"Exception HResult:\n <{e.HResult}>");
-                e = e.InnerException;
-            } while (e != null);
-
-            logger.Error("-------------------------- End exception --------------------------");
+            logger.Error(e, message);
         }
 
         private static void LogInternal(string message, LogLevel level)
@@ -117,8 +128,6 @@ namespace Flow.Launcher.Infrastructure.Logger
                 var prefix = parts[1];
                 var unprefixed = parts[2];
                 var logger = LogManager.GetLogger(prefix);
-
-                System.Diagnostics.Debug.WriteLine($"{level.Name}|{message}");
                 logger.Log(level, unprefixed);
             }
             else
@@ -128,11 +137,12 @@ namespace Flow.Launcher.Infrastructure.Logger
         }
 
         /// <param name="message">example: "|prefix|unprefixed" </param>
-        [MethodImpl(MethodImplOptions.Synchronized)]
+        /// <param name="e">Exception</param>
         public static void Exception(string message, System.Exception e)
         {
+            e = e.Demystify();
 #if DEBUG
-           throw e;
+            ExceptionDispatchInfo.Capture(e).Throw();
 #else
             if (FormatValid(message))
             {
@@ -165,7 +175,6 @@ namespace Flow.Launcher.Infrastructure.Logger
 
             var logger = LogManager.GetLogger(classNameWithMethod);
 
-            System.Diagnostics.Debug.WriteLine($"{level.Name}|{message}");
             logger.Log(level, message);
         }
 

Flow.Launcher.Infrastructure/Storage/FlowLauncherJsonStorage.cs

@@ -8,7 +8,7 @@ using Flow.Launcher.Infrastructure.UserSettings;
 
 namespace Flow.Launcher.Infrastructure.Storage
 {
-    public class FlowLauncherJsonStorage<T> : JsonStrorage<T> where T : new()
+    public class FlowLauncherJsonStorage<T> : JsonStorage<T> where T : new()
     {
         public FlowLauncherJsonStorage()
         {

Flow.Launcher.Infrastructure/Storage/ISavable.cs

@@ -1,11 +1,8 @@
-namespace Flow.Launcher.Infrastructure.Storage
+using System;
+
+namespace Flow.Launcher.Infrastructure.Storage
 {
-    /// <summary>
-    /// Save plugin settings/cache, 
-    /// todo should be merged into a abstract class intead of seperate interface
-    /// </summary>
-    public interface ISavable
-    {
-        void Save();
-    }
-}
+    [Obsolete("Deprecated as of Flow Launcher v1.8.0, on 2021.06.21. " +
+        "This is used only for Everything plugin v1.4.9 or below backwards compatibility")]
+    public interface ISavable : Plugin.ISavable { }
+}

Flow.Launcher.Infrastructure/Storage/JsonStorage.cs

@@ -9,10 +9,9 @@ namespace Flow.Launcher.Infrastructure.Storage
     /// <summary>
     /// Serialize object using json format.
     /// </summary>
-    public class JsonStrorage<T> where T : new()
+    public class JsonStorage<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";
@@ -20,24 +19,14 @@ namespace Flow.Launcher.Infrastructure.Storage
         public string DirectoryPath { get; set; }
 
 
-        internal JsonStrorage()
-        {
-            // use property initialization instead of DefaultValueAttribute
-            // easier and flexible for default value of object
-            _serializerSettings = new JsonSerializerOptions
-            {
-                IgnoreNullValues = false
-            };
-        }
-
         public T Load()
         {
             if (File.Exists(FilePath))
             {
-                var searlized = File.ReadAllText(FilePath);
-                if (!string.IsNullOrWhiteSpace(searlized))
+                var serialized = File.ReadAllText(FilePath);
+                if (!string.IsNullOrWhiteSpace(serialized))
                 {
-                    Deserialize(searlized);
+                    Deserialize(serialized);
                 }
                 else
                 {
@@ -51,16 +40,16 @@ namespace Flow.Launcher.Infrastructure.Storage
             return _data.NonNull();
         }
 
-        private void Deserialize(string searlized)
+        private void Deserialize(string serialized)
         {
             try
             {
-                _data = JsonSerializer.Deserialize<T>(searlized, _serializerSettings);
+                _data = JsonSerializer.Deserialize<T>(serialized);
             }
             catch (JsonException e)
             {
                 LoadDefault();
-                Log.Exception($"|JsonStrorage.Deserialize|Deserialize error for json <{FilePath}>", e);
+                Log.Exception($"|JsonStorage.Deserialize|Deserialize error for json <{FilePath}>", e);
             }
 
             if (_data == null)
@@ -98,4 +87,8 @@ namespace Flow.Launcher.Infrastructure.Storage
             File.WriteAllText(FilePath, serialized);
         }
     }
+
+    [Obsolete("Deprecated as of Flow Launcher v1.8.0, on 2021.06.21. " +
+        "This is used only for Everything plugin v1.4.9 or below backwards compatibility")]
+    public class JsonStrorage<T> : JsonStorage<T> where T : new() { }
 }

Flow.Launcher.Infrastructure/Storage/PluginJsonStorage.cs

@@ -3,17 +3,23 @@ using Flow.Launcher.Infrastructure.UserSettings;
 
 namespace Flow.Launcher.Infrastructure.Storage
 {
-    public class PluginJsonStorage<T> :JsonStrorage<T> where T : new()
+    public class PluginJsonStorage<T> :JsonStorage<T> where T : new()
     {
         public PluginJsonStorage()
         {
-            // C# releated, add python releated below
+            // C# related, add python related below
             var dataType = typeof(T);
-            var assemblyName = typeof(T).Assembly.GetName().Name;
+            var assemblyName = dataType.Assembly.GetName().Name;
             DirectoryPath = Path.Combine(DataLocation.DataDirectory(), DirectoryName, Constant.Plugins, assemblyName);
             Helper.ValidateDirectory(DirectoryPath);
 
             FilePath = Path.Combine(DirectoryPath, $"{dataType.Name}{FileSuffix}");
         }
+
+        public PluginJsonStorage(T data) : this()
+        {
+            _data = data;
+        }
     }
 }
+

Flow.Launcher.Infrastructure/UserSettings/PluginSettings.cs

@@ -16,11 +16,13 @@ namespace Flow.Launcher.Infrastructure.UserSettings
                 {
                     var settings = Plugins[metadata.ID];
 
-                    // TODO: Remove. This is one off for 1.2.0 release.
-                    // Introduced a new action keyword in Explorer, so need to update plugin setting in the UserData folder.
-                    // This kind of plugin meta update should be handled by a dedicated method trigger by version bump.
+                    // TODO: Remove. This is backwards compatibility for 1.8.0 release.
+                    // Introduced two new action keywords in Explorer, so need to update plugin setting in the UserData folder.
                     if (metadata.ID == "572be03c74c642baae319fc283e561a8" && metadata.ActionKeywords.Count != settings.ActionKeywords.Count)
-                        settings.ActionKeywords = metadata.ActionKeywords;
+                    {
+                        settings.ActionKeywords.Add(Query.GlobalPluginWildcardSign); // for index search
+                        settings.ActionKeywords.Add(Query.GlobalPluginWildcardSign); // for path search
+                    }
 
                     if (string.IsNullOrEmpty(settings.Version))
                         settings.Version = metadata.Version;
@@ -30,6 +32,11 @@ namespace Flow.Launcher.Infrastructure.UserSettings
                         metadata.ActionKeywords = settings.ActionKeywords;
                         metadata.ActionKeyword = settings.ActionKeywords[0];
                     }
+                    else
+                    {
+                        metadata.ActionKeywords = new List<string>();
+                        metadata.ActionKeyword = string.Empty;
+                    }
                     metadata.Disabled = settings.Disabled;
                     metadata.Priority = settings.Priority;
                 }

Flow.Launcher.Infrastructure/UserSettings/Settings.cs

@@ -97,6 +97,8 @@ namespace Flow.Launcher.Infrastructure.UserSettings
         public bool RememberLastLaunchLocation { get; set; }
         public bool IgnoreHotkeysOnFullscreen { get; set; }
 
+        public bool AutoHideScrollBar { get; set; }
+
         public HttpProxy Proxy { get; set; } = new HttpProxy();
 
         [JsonConverter(typeof(JsonStringEnumConverter))]

Flow.Launcher.Plugin/Feature.cs

@@ -1,36 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.Specialized;
-
-namespace Flow.Launcher.Plugin
-{
-    public interface IFeatures { }
-
-    public interface IContextMenu : IFeatures
-    {
-        List<Result> LoadContextMenus(Result selectedResult);
-    }
-
-    /// <summary>
-    /// Represent plugins that support internationalization
-    /// </summary>
-    public interface IPluginI18n : IFeatures
-    {
-        string GetTranslatedPluginTitle();
-
-        string GetTranslatedPluginDescription();
-    }
-
-    public interface IResultUpdated : IFeatures
-    {
-        event ResultUpdatedEventHandler ResultsUpdated;
-    }
-
-    public delegate void ResultUpdatedEventHandler(IResultUpdated sender, ResultUpdatedEventArgs e);
-
-    public class ResultUpdatedEventArgs : EventArgs
-    {
-        public List<Result> Results;
-        public Query Query;
-    }
-}

Flow.Launcher.Plugin/Features.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Threading;
+
+namespace Flow.Launcher.Plugin
+{
+    /// <summary>
+    /// Base Interface for Flow's special plugin feature interface
+    /// </summary>
+    public interface IFeatures
+    {
+    }
+}

Flow.Launcher.Plugin/Flow.Launcher.Plugin.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0-windows</TargetFramework>
     <ProjectGuid>{8451ECDD-2EA4-4966-BB0A-7BBC40138E80}</ProjectGuid>
     <UseWPF>true</UseWPF>
     <OutputType>Library</OutputType>
@@ -14,10 +14,10 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <Version>1.4.0</Version>
-    <PackageVersion>1.4.0</PackageVersion>
-    <AssemblyVersion>1.4.0</AssemblyVersion>
-    <FileVersion>1.4.0</FileVersion>
+    <Version>2.0.0</Version>
+    <PackageVersion>2.0.0</PackageVersion>
+    <AssemblyVersion>2.0.0</AssemblyVersion>
+    <FileVersion>2.0.0</FileVersion>
     <PackageId>Flow.Launcher.Plugin</PackageId>
     <Authors>Flow-Launcher</Authors>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
@@ -34,7 +34,7 @@
 
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
+    <DebugType>portable</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>..\Output\Debug\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>

Flow.Launcher.Plugin/IPublicAPI.cs

@@ -1,104 +0,0 @@
-using Flow.Launcher.Plugin.SharedModels;
-using JetBrains.Annotations;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace Flow.Launcher.Plugin
-{
-    /// <summary>
-    /// Public APIs that plugin can use
-    /// </summary>
-    public interface IPublicAPI
-    {
-        /// <summary>
-        /// Change Flow.Launcher query
-        /// </summary>
-        /// <param name="query">query text</param>
-        /// <param name="requery">
-        /// force requery By default, Flow Launcher will not fire query if your query is same with existing one. 
-        /// Set this to true to force Flow Launcher requerying
-        /// </param>
-        void ChangeQuery(string query, bool requery = false);
-
-        /// <summary>
-        /// Restart Flow Launcher
-        /// </summary>
-        void RestartApp();
-
-        /// <summary>
-        /// Save all Flow Launcher settings
-        /// </summary>
-        void SaveAppAllSettings();
-
-        /// <summary>
-        /// Reloads any Plugins that have the 
-        /// IReloadable implemented. It refeshes
-        /// Plugin's in memory data with new content
-        /// added by user.
-        /// </summary>
-        Task ReloadAllPluginData();
-
-        /// <summary>
-        /// Check for new Flow Launcher update
-        /// </summary>
-        void CheckForNewUpdate();
-
-        /// <summary>
-        /// Show message box
-        /// </summary>
-        /// <param name="title">Message title</param>
-        /// <param name="subTitle">Message subtitle</param>
-        /// <param name="iconPath">Message icon path (relative path to your plugin folder)</param>
-        void ShowMsg(string title, string subTitle = "", string iconPath = "");
-
-        /// <summary>
-        /// Show message box
-        /// </summary>
-        /// <param name="title">Message title</param>
-        /// <param name="subTitle">Message subtitle</param>
-        /// <param name="iconPath">Message icon path (relative path to your plugin folder)</param>
-        /// <param name="useMainWindowAsOwner">when true will use main windows as the owner</param>
-        void ShowMsg(string title, string subTitle, string iconPath, bool useMainWindowAsOwner = true);
-
-        /// <summary>
-        /// Open setting dialog
-        /// </summary>
-        void OpenSettingDialog();
-
-        /// <summary>
-        /// Get translation of current language
-        /// You need to implement IPluginI18n if you want to support multiple languages for your plugin
-        /// </summary>
-        /// <param name="key"></param>
-        /// <returns></returns>
-        string GetTranslation(string key);
-
-        /// <summary>
-        /// Get all loaded plugins 
-        /// </summary>
-        /// <returns></returns>
-        List<PluginPair> GetAllPlugins();
-
-        /// <summary>
-        /// Fired after global keyboard events
-        /// if you want to hook something like Ctrl+R, you should use this event
-        /// </summary>
-        event FlowLauncherGlobalKeyboardEventHandler GlobalKeyboardEvent;
-
-        MatchResult FuzzySearch(string query, string stringToCompare);
-
-        Task<string> HttpGetStringAsync(string url, CancellationToken token = default);
-
-        Task<Stream> HttpGetStreamAsync(string url, CancellationToken token = default);
-
-        Task HttpDownloadAsync([NotNull] string url, [NotNull] string filePath);
-
-        void AddActionKeyword(string pluginId, string newActionKeyword);
-
-        void RemoveActionKeyword(string pluginId, string oldActionKeyword);
-
-    }
-}

Flow.Launcher.Plugin/Interfaces/IAsyncReloadable.cs

@@ -13,8 +13,8 @@ namespace Flow.Launcher.Plugin
     /// The command that allows user to manual reload is exposed via Plugin.Sys, and
     /// it will call the plugins that have implemented this interface.
     /// </summary>
-    public interface IAsyncReloadable
+    public interface IAsyncReloadable : IFeatures
     {
         Task ReloadDataAsync();
     }
-}
+}

Flow.Launcher.Plugin/Interfaces/IContextMenu.cs

@@ -0,0 +1,9 @@
+using System.Collections.Generic;
+
+namespace Flow.Launcher.Plugin
+{
+    public interface IContextMenu : IFeatures
+    {
+        List<Result> LoadContextMenus(Result selectedResult);
+    }
+}

Flow.Launcher.Plugin/Interfaces/IPlugin.cs

@@ -1,4 +1,6 @@
 using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace Flow.Launcher.Plugin
 {
@@ -9,7 +11,7 @@ namespace Flow.Launcher.Plugin
     /// or performaing CPU intense jobs (performing better with cancellation), please try the IAsyncPlugin interface
     /// </para>
     /// </summary>
-    public interface IPlugin
+    public interface IPlugin : IAsyncPlugin
     {
         /// <summary>
         /// Querying when user's search changes
@@ -27,5 +29,9 @@ namespace Flow.Launcher.Plugin
         /// </summary>
         /// <param name="context"></param>
         void Init(PluginInitContext context);
+
+        Task IAsyncPlugin.InitAsync(PluginInitContext context) => Task.Run(() => Init(context));
+
+        Task<List<Result>> IAsyncPlugin.QueryAsync(Query query, CancellationToken token) => Task.Run(() => Query(query));
     }
 }

Flow.Launcher.Plugin/Interfaces/IPluginI18n.cs

@@ -0,0 +1,12 @@
+namespace Flow.Launcher.Plugin
+{
+    /// <summary>
+    /// Represent plugins that support internationalization
+    /// </summary>
+    public interface IPluginI18n : IFeatures
+    {
+        string GetTranslatedPluginTitle();
+
+        string GetTranslatedPluginDescription();
+    }
+}

Flow.Launcher.Plugin/Interfaces/IPublicAPI.cs

@@ -0,0 +1,189 @@
+using Flow.Launcher.Plugin.SharedModels;
+using JetBrains.Annotations;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Flow.Launcher.Plugin
+{
+    /// <summary>
+    /// Public APIs that plugin can use
+    /// </summary>
+    public interface IPublicAPI
+    {
+        /// <summary>
+        /// Change Flow.Launcher query
+        /// </summary>
+        /// <param name="query">query text</param>
+        /// <param name="requery">
+        /// force requery By default, Flow Launcher will not fire query if your query is same with existing one. 
+        /// Set this to true to force Flow Launcher requerying
+        /// </param>
+        void ChangeQuery(string query, bool requery = false);
+
+        /// <summary>
+        /// Restart Flow Launcher
+        /// </summary>
+        void RestartApp();
+
+        /// <summary>
+        /// Save everything, all of Flow Launcher and plugins' data and settings
+        /// </summary>
+        void SaveAppAllSettings();
+
+        /// <summary>
+        /// Save all Flow's plugins settings
+        /// </summary>
+        void SavePluginSettings();
+
+        /// <summary>
+        /// Reloads any Plugins that have the 
+        /// IReloadable implemented. It refeshes
+        /// Plugin's in memory data with new content
+        /// added by user.
+        /// </summary>
+        Task ReloadAllPluginData();
+
+        /// <summary>
+        /// Check for new Flow Launcher update
+        /// </summary>
+        void CheckForNewUpdate();
+
+        /// <summary>
+        /// Show the error message using Flow's standard error icon.
+        /// </summary>
+        /// <param name="title">Message title</param>
+        /// <param name="subTitle">Optional message subtitle</param>
+        void ShowMsgError(string title, string subTitle = "");
+
+        /// <summary>
+        /// Show message box
+        /// </summary>
+        /// <param name="title">Message title</param>
+        /// <param name="subTitle">Message subtitle</param>
+        /// <param name="iconPath">Message icon path (relative path to your plugin folder)</param>
+        void ShowMsg(string title, string subTitle = "", string iconPath = "");
+
+        /// <summary>
+        /// Show message box
+        /// </summary>
+        /// <param name="title">Message title</param>
+        /// <param name="subTitle">Message subtitle</param>
+        /// <param name="iconPath">Message icon path (relative path to your plugin folder)</param>
+        /// <param name="useMainWindowAsOwner">when true will use main windows as the owner</param>
+        void ShowMsg(string title, string subTitle, string iconPath, bool useMainWindowAsOwner = true);
+
+        /// <summary>
+        /// Open setting dialog
+        /// </summary>
+        void OpenSettingDialog();
+
+        /// <summary>
+        /// Get translation of current language
+        /// You need to implement IPluginI18n if you want to support multiple languages for your plugin
+        /// </summary>
+        /// <param name="key"></param>
+        /// <returns></returns>
+        string GetTranslation(string key);
+
+        /// <summary>
+        /// Get all loaded plugins 
+        /// </summary>
+        /// <returns></returns>
+        List<PluginPair> GetAllPlugins();
+
+        /// <summary>
+        /// Fired after global keyboard events
+        /// if you want to hook something like Ctrl+R, you should use this event
+        /// </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);
+
+        /// <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's setting. This is the method used to load settings from json in Flow.
+        /// When the file is not exist, it will create a new instance for the specific type.
+        /// </summary>
+        /// <typeparam name="T">Type for deserialization</typeparam>
+        /// <returns></returns>
+        T LoadSettingJsonStorage<T>() where T : new();
+
+        /// <summary>
+        /// Save JsonStorage for current plugin's setting. This is the method used to save settings to json in Flow.Launcher
+        /// This method will save the original instance loaded with LoadJsonStorage.
+        /// This API call is for manually Save. Flow will automatically save all setting type that has called LoadSettingJsonStorage or SaveSettingJsonStorage previously.
+        /// </summary>
+        /// <typeparam name="T">Type for Serialization</typeparam>
+        /// <returns></returns>
+        void SaveSettingJsonStorage<T>() where T : new();
+    }
+}

Flow.Launcher.Plugin/Interfaces/IReloadable.cs

@@ -15,8 +15,8 @@
     /// If requiring reloading data asynchronously, please use the IAsyncReloadable interface
     /// </para>
     /// </summary>
-    public interface IReloadable
+    public interface IReloadable : IFeatures
     {
         void ReloadData();
     }
-}
+}

Flow.Launcher.Plugin/Interfaces/IResultUpdated.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+
+namespace Flow.Launcher.Plugin
+{
+    public interface IResultUpdated : IFeatures
+    {
+        event ResultUpdatedEventHandler ResultsUpdated;
+    }
+
+    public delegate void ResultUpdatedEventHandler(IResultUpdated sender, ResultUpdatedEventArgs e);
+
+    public class ResultUpdatedEventArgs : EventArgs
+    {
+        public List<Result> Results;
+        public Query Query;
+        public CancellationToken Token { get; init; }
+    }
+}

Flow.Launcher.Plugin/Interfaces/ISavable.cs

@@ -0,0 +1,12 @@
+namespace Flow.Launcher.Plugin
+{
+    /// <summary>
+    /// Save addtional plugin data. Inherit this interface if additional data e.g. cache needs to be saved,
+    /// Otherwise if LoadSettingJsonStorage or SaveSettingJsonStorage has been callded,
+    /// plugin settings will be automatically saved (see Flow.Launcher/PublicAPIInstance.SavePluginSettings) by Flow
+    /// </summary>
+    public interface ISavable : IFeatures
+    {
+        void Save();
+    }
+}

Flow.Launcher.Plugin/PluginPair.cs

@@ -2,7 +2,7 @@
 {
     public class PluginPair
     {
-        public object Plugin { get; internal set; }
+        public IAsyncPlugin Plugin { get; internal set; }
         public PluginMetadata Metadata { get; internal set; }
 
         

Flow.Launcher.Plugin/README.md

@@ -3,4 +3,4 @@
 
 * Defines base objects and interfaces for plugins
 * Plugin authors making C# plugins should reference this DLL via nuget
-* Contains base commands used by all plugins
+* Contains commands and models that can be used by plugins

Flow.Launcher.Plugin/Result.cs

@@ -10,9 +10,18 @@ namespace Flow.Launcher.Plugin
     {
 
         private string _pluginDirectory;
+        
         private string _icoPath;
+
+        /// <summary>
+        /// Provides the title of the result. This is always required.
+        /// </summary>
         public string Title { get; set; }
-        public string SubTitle { get; set; }
+
+        /// <summary>
+        /// Provides additional details for the result. This is optional
+        /// </summary>
+        public string SubTitle { get; set; } = string.Empty;
 
         /// <summary>
         /// This holds the action keyword that triggered the result. 

Flow.Launcher.Test/Flow.Launcher.Test.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0-windows10.0.19041.0</TargetFramework>
     <ProjectGuid>{FF742965-9A80-41A5-B042-D6C7D3A21708}</ProjectGuid>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
@@ -15,7 +15,7 @@
   
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
+    <DebugType>portable</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
@@ -49,12 +49,12 @@
 
   <ItemGroup>
     <PackageReference Include="Moq" Version="4.14.1" />
-    <PackageReference Include="nunit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.16.1">
+    <PackageReference Include="nunit" Version="3.13.2" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
   </ItemGroup>
 
 </Project>

Flow.Launcher.Test/Plugins/ExplorerTest.cs

@@ -133,6 +133,13 @@ namespace Flow.Launcher.Test.Plugins
         {
             // Given
             var queryConstructor = new QueryConstructor(new Settings());
+            var baseQuery =  queryConstructor.CreateBaseQuery();
+            
+            // system running this test could have different locale than the hard-coded 1033 LCID en-US.
+            var queryKeywordLocale = baseQuery.QueryKeywordLocale;
+            expectedString = expectedString.Replace("1033", queryKeywordLocale.ToString());
+            
+            
 
             //When
             var resultString = queryConstructor.QueryForAllFilesAndFolders(userSearchString);

Flow.Launcher.Test/Plugins/JsonRPCPluginTest.cs

@@ -0,0 +1,105 @@
+using NUnit;
+using NUnit.Framework;
+using Flow.Launcher.Core.Plugin;
+using Flow.Launcher.Plugin;
+using System.Threading.Tasks;
+using System.IO;
+using System.Threading;
+using System.Text;
+using System.Text.Json;
+using System.Linq;
+using System.Collections.Generic;
+
+namespace Flow.Launcher.Test.Plugins
+{
+    [TestFixture]
+    // ReSharper disable once InconsistentNaming
+    internal class JsonRPCPluginTest : JsonRPCPlugin
+    {
+        public override string SupportedLanguage { get; set; } = AllowedLanguage.Executable;
+
+        protected override string ExecuteCallback(JsonRPCRequestModel rpcRequest)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        protected override string ExecuteContextMenu(Result selectedResult)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        protected override Task<Stream> ExecuteQueryAsync(Query query, CancellationToken token)
+        {
+            var byteInfo = Encoding.UTF8.GetBytes(query.RawQuery);
+
+            var resultStream = new MemoryStream(byteInfo);
+            return Task.FromResult((Stream)resultStream);
+        }
+
+        [TestCase("{\"result\":[],\"DebugMessage\":null}", Description = "Empty Result")]
+        [TestCase("{\"result\":[{\"JsonRPCAction\":null,\"Title\":\"something\",\"SubTitle\":\"\",\"ActionKeywordAssigned\":null,\"IcoPath\":null}],\"DebugMessage\":null}", Description = "One Result with Pascal Case")]
+        [TestCase("{\"result\":[{\"jsonRPCAction\":null,\"title\":\"something\",\"subTitle\":\"\",\"actionKeywordAssigned\":null,\"icoPath\":null}],\"debugMessage\":null}", Description = "One Result with camel Case")]
+        [TestCase("{\"result\":[{\"JsonRPCAction\":null,\"Title\":\"iii\",\"SubTitle\":\"\",\"ActionKeywordAssigned\":null,\"IcoPath\":null},{\"JsonRPCAction\":null,\"Title\":\"iii\",\"SubTitle\":\"\",\"ActionKeywordAssigned\":null,\"IcoPath\":null}],\"DebugMessage\":null}", Description = "Two Result with Pascal Case")]
+        [TestCase("{\"result\":[{\"jsonrpcAction\":null,\"TItLE\":\"iii\",\"Subtitle\":\"\",\"Actionkeywordassigned\":null,\"icoPath\":null},{\"jsonRPCAction\":null,\"tiTle\":\"iii\",\"subTitle\":\"\",\"ActionKeywordAssigned\":null,\"IcoPath\":null}],\"DebugMessage\":null}", Description = "Two Result with Weird Case")]
+        public async Task GivenVariousJsonText_WhenVariousNamingCase_ThenExpectNotNullResults_Async(string resultText)
+        {
+            var results = await QueryAsync(new Query
+            {
+                RawQuery = resultText
+            }, default);
+
+            Assert.IsNotNull(results);
+
+            foreach (var result in results)
+            {
+                Assert.IsNotNull(result);
+                Assert.IsNotNull(result.Action);
+                Assert.IsNotNull(result.Title);
+            }
+
+        }
+
+        public static List<JsonRPCQueryResponseModel> ResponseModelsSource = new()
+        {
+            new()
+            {
+                Result = new()
+            },
+            new()
+            {
+                Result = new()
+                {
+                    new JsonRPCResult
+                    {
+                        Title = "Test1",
+                        SubTitle = "Test2"
+                    }
+                }
+            }
+        };
+
+        [TestCaseSource(typeof(JsonRPCPluginTest), nameof(ResponseModelsSource))]
+        public async Task GivenModel_WhenSerializeWithDifferentNamingPolicy_ThenExpectSameResult_Async(JsonRPCQueryResponseModel reference)
+        {
+            var camelText = JsonSerializer.Serialize(reference, new() { PropertyNamingPolicy = JsonNamingPolicy.CamelCase });
+
+            var pascalText = JsonSerializer.Serialize(reference);
+
+            var results1 = await QueryAsync(new Query { RawQuery = camelText }, default);
+            var results2 = await QueryAsync(new Query { RawQuery = pascalText }, default);
+
+            Assert.IsNotNull(results1);
+            Assert.IsNotNull(results2);
+
+            foreach (var ((result1, result2), referenceResult) in results1.Zip(results2).Zip(reference.Result))
+            {
+                Assert.AreEqual(result1, result2);
+                Assert.AreEqual(result1, referenceResult);
+
+                Assert.IsNotNull(result1);
+                Assert.IsNotNull(result1.Action);
+            }
+        }
+
+    }
+}

Flow.Launcher/App.xaml.cs

@@ -61,7 +61,6 @@ namespace Flow.Launcher
                 _settingsVM = new SettingWindowViewModel(_updater, _portable);
                 _settings = _settingsVM.Settings;
 
-
                 _alphabet.Initialize(_settings);
                 _stringMatcher = new StringMatcher(_alphabet);
                 StringMatcher.Instance = _stringMatcher;
@@ -69,6 +68,9 @@ namespace Flow.Launcher
 
                 PluginManager.LoadPlugins(_settings.PluginSettings);
                 _mainVM = new MainViewModel(_settings);
+
+                HotKeyMapper.Initialize(_mainVM);
+
                 API = new PublicAPIInstance(_settingsVM, _mainVM, _alphabet);
 
                 Http.API = API;

Flow.Launcher/CustomQueryHotkeySetting.xaml.cs

@@ -1,8 +1,7 @@
 using Flow.Launcher.Core.Resource;
+using Flow.Launcher.Helper;
 using Flow.Launcher.Infrastructure.Hotkey;
 using Flow.Launcher.Infrastructure.UserSettings;
-using NHotkey;
-using NHotkey.Wpf;
 using System;
 using System.Collections.ObjectModel;
 using System.Linq;
@@ -52,11 +51,7 @@ namespace Flow.Launcher
                 };
                 _settings.CustomPluginHotkeys.Add(pluginHotkey);
 
-                SetHotkey(ctlHotkey.CurrentHotkey, delegate
-                {
-                    App.API.ChangeQuery(pluginHotkey.ActionKeyword);
-                    Application.Current.MainWindow.Visibility = Visibility.Visible;
-                });
+                HotKeyMapper.SetCustomQueryHotkey(pluginHotkey);
             }
             else
             {
@@ -69,12 +64,8 @@ namespace Flow.Launcher
                 updateCustomHotkey.ActionKeyword = tbAction.Text;
                 updateCustomHotkey.Hotkey = ctlHotkey.CurrentHotkey.ToString();
                 //remove origin hotkey
-                RemoveHotkey(oldHotkey);
-                SetHotkey(new HotkeyModel(updateCustomHotkey.Hotkey), delegate
-                {
-                    App.API.ChangeQuery(updateCustomHotkey.ActionKeyword);
-                    Application.Current.MainWindow.Visibility = Visibility.Visible;
-                });
+                HotKeyMapper.RemoveHotkey(oldHotkey);
+                HotKeyMapper.SetCustomQueryHotkey(updateCustomHotkey);
             }
 
             Close();
@@ -100,28 +91,8 @@ namespace Flow.Launcher
         {
             App.API.ChangeQuery(tbAction.Text);
             Application.Current.MainWindow.Visibility = Visibility.Visible;
-        }
+            Application.Current.MainWindow.Focus();
 
-        private void RemoveHotkey(string hotkeyStr)
-        {
-            if (!string.IsNullOrEmpty(hotkeyStr))
-            {
-                HotkeyManager.Current.Remove(hotkeyStr);
-            }
-        }
-
-        private void SetHotkey(HotkeyModel hotkey, EventHandler<HotkeyEventArgs> action)
-        {
-            string hotkeyStr = hotkey.ToString();
-            try
-            {
-                HotkeyManager.Current.AddOrReplace(hotkeyStr, hotkey.CharKey, hotkey.ModifierKeys, action);
-            }
-            catch (Exception)
-            {
-                string errorMsg = string.Format(InternationalizationManager.Instance.GetTranslation("registerHotkeyFailed"), hotkeyStr);
-                MessageBox.Show(errorMsg);
-            }
         }
 
         private void cmdEsc_OnPress(object sender, ExecutedRoutedEventArgs e)

Flow.Launcher/Flow.Launcher.csproj

@@ -1,8 +1,8 @@
-<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+<Project Sdk="Microsoft.NET.Sdk">
   
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0-windows10.0.19041.0</TargetFramework>
     <UseWPF>true</UseWPF>
     <UseWindowsForms>true</UseWindowsForms>
     <StartupObject>Flow.Launcher.App</StartupObject>
@@ -17,7 +17,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <PlatformTarget>AnyCPU</PlatformTarget>
     <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
+    <DebugType>portable</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>..\Output\Debug\</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
@@ -81,7 +81,7 @@
 
   <ItemGroup>
     <PackageReference Include="InputSimulator" Version="1.0.4" />
-    <PackageReference Include="ModernWpfUI" Version="0.8.3" />
+    <PackageReference Include="ModernWpfUI" Version="0.9.3" />
     <PackageReference Include="NHotkey.Wpf" Version="1.2.1" />
     <PackageReference Include="NuGet.CommandLine" Version="5.4.0">
       <PrivateAssets>all</PrivateAssets>

Flow.Launcher/Helper/ErrorReporting.cs

@@ -3,6 +3,8 @@ using System.Windows.Threading;
 using NLog;
 using Flow.Launcher.Infrastructure;
 using Flow.Launcher.Infrastructure.Exception;
+using NLog.Fluent;
+using Log = Flow.Launcher.Infrastructure.Logger.Log;
 
 namespace Flow.Launcher.Helper
 {
@@ -45,4 +47,4 @@ namespace Flow.Launcher.Helper
             return info;
         }
     }
-}
+}

Flow.Launcher/Helper/HotKeyMapper.cs

@@ -0,0 +1,136 @@
+using Flow.Launcher.Infrastructure.Hotkey;
+using Flow.Launcher.Infrastructure.UserSettings;
+using System;
+using NHotkey;
+using NHotkey.Wpf;
+using Flow.Launcher.Core.Resource;
+using System.Windows;
+using Flow.Launcher.ViewModel;
+
+namespace Flow.Launcher.Helper
+{
+    internal static class HotKeyMapper
+    {
+        private static Settings settings;
+        private static MainViewModel mainViewModel;
+
+        internal static void Initialize(MainViewModel mainVM)
+        {
+            mainViewModel = mainVM;
+            settings = mainViewModel._settings;
+
+            SetHotkey(settings.Hotkey, OnHotkey);
+            LoadCustomPluginHotkey();
+        }
+
+        private static void SetHotkey(string hotkeyStr, EventHandler<HotkeyEventArgs> action)
+        {
+            var hotkey = new HotkeyModel(hotkeyStr);
+            SetHotkey(hotkey, action);
+        }
+
+        internal static void SetHotkey(HotkeyModel hotkey, EventHandler<HotkeyEventArgs> action)
+        {
+            string hotkeyStr = hotkey.ToString();
+            try
+            {
+                HotkeyManager.Current.AddOrReplace(hotkeyStr, hotkey.CharKey, hotkey.ModifierKeys, action);
+            }
+            catch (Exception)
+            {
+                string errorMsg =
+                    string.Format(InternationalizationManager.Instance.GetTranslation("registerHotkeyFailed"),
+                        hotkeyStr);
+                MessageBox.Show(errorMsg);
+            }
+        }
+
+        internal static void RemoveHotkey(string hotkeyStr)
+        {
+            if (!string.IsNullOrEmpty(hotkeyStr))
+            {
+                HotkeyManager.Current.Remove(hotkeyStr);
+            }
+        }
+
+        internal static void OnHotkey(object sender, HotkeyEventArgs e)
+        {
+            if (!ShouldIgnoreHotkeys())
+            {
+                UpdateLastQUeryMode();
+
+                mainViewModel.ToggleFlowLauncher();
+                e.Handled = true;
+            }
+        }
+
+        /// <summary>
+        /// Checks if Flow Launcher should ignore any hotkeys
+        /// </summary>
+        private static bool ShouldIgnoreHotkeys()
+        {
+            return settings.IgnoreHotkeysOnFullscreen && WindowsInteropHelper.IsWindowFullscreen();
+        }
+
+        private static void UpdateLastQUeryMode()
+        {
+            switch(settings.LastQueryMode)
+            {
+                case LastQueryMode.Empty:
+                    mainViewModel.ChangeQueryText(string.Empty);
+                    break;
+                case LastQueryMode.Preserved:
+                    mainViewModel.LastQuerySelected = true;
+                    break;
+                case LastQueryMode.Selected:
+                    mainViewModel.LastQuerySelected = false;
+                    break;
+                default:
+                    throw new ArgumentException($"wrong LastQueryMode: <{settings.LastQueryMode}>");
+
+            }
+        }
+
+        internal static void LoadCustomPluginHotkey()
+        {
+            if (settings.CustomPluginHotkeys == null)
+                return;
+
+            foreach (CustomPluginHotkey hotkey in settings.CustomPluginHotkeys)
+            {
+                SetCustomQueryHotkey(hotkey);
+            }
+        }
+
+        internal static void SetCustomQueryHotkey(CustomPluginHotkey hotkey)
+        {
+            SetHotkey(hotkey.Hotkey, (s, e) =>
+            {
+                if (ShouldIgnoreHotkeys())
+                    return;
+
+                mainViewModel.MainWindowVisibility = Visibility.Visible;
+                mainViewModel.ChangeQueryText(hotkey.ActionKeyword);
+            });
+        }
+
+        internal static bool CheckAvailability(HotkeyModel currentHotkey)
+        {
+            try
+            {
+                HotkeyManager.Current.AddOrReplace("HotkeyAvailabilityTest", currentHotkey.CharKey, currentHotkey.ModifierKeys, (sender, e) => { });
+
+                return true;
+            }
+            catch
+            {
+            }
+            finally
+            {
+                HotkeyManager.Current.Remove("HotkeyAvailabilityTest");
+            }
+
+            return false;
+        }
+    }
+}

Flow.Launcher/Helper/SingletonWindowOpener.cs

@@ -11,7 +11,16 @@ namespace Flow.Launcher.Helper
             var window = Application.Current.Windows.OfType<Window>().FirstOrDefault(x => x.GetType() == typeof(T))
                          ?? (T)Activator.CreateInstance(typeof(T), args);
             Application.Current.MainWindow.Hide();
+            
+            // Fix UI bug
+            // Add `window.WindowState = WindowState.Normal`
+            // If only use `window.Show()`, Settings-window doesn't show when minimized in taskbar 
+            // Not sure why this works tho
+            // Probably because, when `.Show()` fails, `window.WindowState == Minimized` (not `Normal`) 
+            // https://stackoverflow.com/a/59719760/4230390
+            window.WindowState = WindowState.Normal; 
             window.Show();
+            
             window.Focus();
 
             return (T)window;

Flow.Launcher/HotkeyControl.xaml

@@ -10,7 +10,7 @@
     <Grid>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="150" />
-            <ColumnDefinition Width="120" />
+            <ColumnDefinition Width="125" />
         </Grid.ColumnDefinitions>
         <TextBox x:Name="tbHotkey" TabIndex="100" VerticalContentAlignment="Center" Grid.Column="0"
                  PreviewKeyDown="TbHotkey_OnPreviewKeyDown" input:InputMethod.IsInputMethodEnabled="False"/>

Flow.Launcher/HotkeyControl.xaml.cs

@@ -4,8 +4,8 @@ using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
-using NHotkey.Wpf;
 using Flow.Launcher.Core.Resource;
+using Flow.Launcher.Helper;
 using Flow.Launcher.Infrastructure.Hotkey;
 using Flow.Launcher.Plugin;
 
@@ -18,11 +18,7 @@ namespace Flow.Launcher
 
         public event EventHandler HotkeyChanged;
 
-        protected virtual void OnHotkeyChanged()
-        {
-            EventHandler handler = HotkeyChanged;
-            if (handler != null) handler(this, EventArgs.Empty);
-        }
+        protected virtual void OnHotkeyChanged() => HotkeyChanged?.Invoke(this, EventArgs.Empty);
 
         public HotkeyControl()
         {
@@ -90,24 +86,7 @@ namespace Flow.Launcher
             SetHotkey(new HotkeyModel(keyStr), triggerValidate);
         }
 
-        private bool CheckHotkeyAvailability()
-        {
-            try
-            {
-                HotkeyManager.Current.AddOrReplace("HotkeyAvailabilityTest", CurrentHotkey.CharKey, CurrentHotkey.ModifierKeys, (sender, e) => { });
-
-                return true;
-            }
-            catch
-            {
-            }
-            finally
-            {
-                HotkeyManager.Current.Remove("HotkeyAvailabilityTest");
-            }
-
-            return false;
-        }
+        private bool CheckHotkeyAvailability() => HotKeyMapper.CheckAvailability(CurrentHotkey);
 
         public new bool IsFocused
         {

Flow.Launcher/Languages/en.xaml

@@ -31,11 +31,15 @@
     <system:String x:Key="ignoreHotkeysOnFullscreen">Ignore hotkeys in fullscreen mode</system:String>
     <system:String x:Key="pythonDirectory">Python Directory</system:String>
     <system:String x:Key="autoUpdates">Auto Update</system:String>
+    <system:String x:Key="autoHideScrollBar">Auto Hide Scroll Bar</system:String>
+    <system:String x:Key="autoHideScrollBarToolTip">Automatically hides the Settings window scroll bar and show when hover the mouse over it</system:String>
     <system:String x:Key="selectPythonDirectory">Select</system:String>
     <system:String x:Key="hideOnStartup">Hide Flow Launcher on startup</system:String>
     <system:String x:Key="hideNotifyIcon">Hide tray icon</system:String>
     <system:String x:Key="querySearchPrecision">Query Search Precision</system:String>
     <system:String x:Key="ShouldUsePinyin">Should Use Pinyin</system:String>
+    <system:String x:Key="ShouldUsePinyinToolTip">Allows using Pinyin to search. Pinyin is the standard system of romanized spelling for transliterating Chinese</system:String>
+    <system:String x:Key="shadowEffectNotAllowed">Shadow effect is not allowed while current theme has blur effect enabled</system:String>
 
     <!--Setting Plugin-->
     <system:String x:Key="plugin">Plugin</system:String>
@@ -47,6 +51,7 @@
     <system:String x:Key="newActionKeyword">New action keyword:</system:String>
     <system:String x:Key="currentPriority">Current Priority:</system:String>
     <system:String x:Key="newPriority">New Priority:</system:String>
+    <system:String x:Key="priority">Priority:</system:String>
     <system:String x:Key="pluginDirectory">Plugin Directory</system:String>
     <system:String x:Key="author">Author</system:String>
     <system:String x:Key="plugin_init_time">Init time:</system:String>
@@ -69,6 +74,7 @@
     <system:String x:Key="openResultModifiers">Open Result Modifiers</system:String>
     <system:String x:Key="showOpenResultHotkey">Show Hotkey</system:String>
     <system:String x:Key="customQueryHotkey">Custom Query Hotkey</system:String>
+    <system:String x:Key="customQuery">Query</system:String>
     <system:String x:Key="delete">Delete</system:String>
     <system:String x:Key="edit">Edit</system:String>
     <system:String x:Key="add">Add</system:String>
@@ -107,6 +113,7 @@
         or go to https://github.com/Flow-Launcher/Flow.Launcher/releases to download updates manually.
     </system:String>
     <system:String x:Key="releaseNotes">Release Notes</system:String>
+    <system:String x:Key="documentation">Usage Tips:</system:String>
 
     <!--Priority Setting Dialog-->
     <system:String x:Key="priority_tips">Greater the number, the higher the result will be ranked. Try setting it as 5. If you want the results to be lower than any other plugin's, provide a negative number</system:String>
@@ -121,6 +128,7 @@
     <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-->
@@ -131,7 +139,7 @@
     <system:String x:Key="update">Update</system:String>
 
     <!--Hotkey Control-->
-    <system:String x:Key="hotkeyUnavailable">Hotkey unavailable</system:String>
+    <system:String x:Key="hotkeyUnavailable">Hotkey Unavailable</system:String>
 
     <!--Crash Reporter-->
     <system:String x:Key="reportWindow_version">Version</system:String>

Flow.Launcher/Languages/sk.xaml

@@ -36,6 +36,7 @@
     <system:String x:Key="hideNotifyIcon">Schovať ikonu z oblasti oznámení</system:String>
     <system:String x:Key="querySearchPrecision">Presnosť vyhľadávania</system:String>
     <system:String x:Key="ShouldUsePinyin">Použiť Pinyin</system:String>
+    <system:String x:Key="ShouldUsePinyinToolTip">Umožňuje vyhľadávanie pomocou Pinyin. Pinyin je štandardný systém romanizovaného pravopisu pre transliteráciu čínštiny</system:String>
 
     <!--Setting Plugin-->
     <system:String x:Key="plugin">Plugin</system:String>
@@ -107,6 +108,7 @@
         alebo prejdite na https://github.com/Flow-Launcher/Flow.Launcher/releases pre manuálne stiahnutie aktualizácie.
     </system:String>
     <system:String x:Key="releaseNotes">Poznámky k vydaniu</system:String>
+    <system:String x:Key="documentation">Tipy na používanie:</system:String>
 
     <!--Priority Setting Dialog-->
     <system:String x:Key="priority_tips">Vyššie číslo znamená, že výsledok bude vyššie. Skúste nastaviť napr. 5. Ak chcete, aby boli výsledky nižšie ako ktorékoľvek iné doplnky, zadajte záporné číslo</system:String>
@@ -121,6 +123,7 @@
     <system:String x:Key="newActionKeywordsCannotBeEmpty">Nová skratka pre akciu nemôže byť prázdna</system:String>
     <system:String x:Key="newActionKeywordsHasBeenAssigned">Nová skratka pre akciu bola priradená pre iný plugin, prosím, zvoľte inú skratku</system:String>
     <system:String x:Key="success">Úspešné</system:String>
+    <system:String x:Key="completedSuccessfully">Úspešne dokončené</system:String>
     <system:String x:Key="actionkeyword_tips">Použite * ak nechcete určiť skratku pre akciu</system:String>
 
     <!--Custom Query Hotkey Dialog-->
@@ -158,7 +161,7 @@
     <system:String x:Key="update_flowlauncher_update_found">Bola nájdená aktualizácia</system:String>
     <system:String x:Key="update_flowlauncher_updating">Aktualizuje sa…</system:String>
     <system:String x:Key="update_flowlauncher_fail_moving_portable_user_profile_data">Flow Launcher nedokázal presunúť používateľské údaje do aktualizovanej verzie.
-        Prosím, presuňte profilový priečinok „data“ z {0} do {1}</system:String>
+        Prosím, presuňte profilový priečinok data z {0} do {1}</system:String>
     <system:String x:Key="update_flowlauncher_new_update">Nová aktualizácia</system:String>
     <system:String x:Key="update_flowlauncher_update_new_version_available">Je dostupná nová verzia Flow Launchera {0}</system:String>
     <system:String x:Key="update_flowlauncher_update_error">Počas inštalácie aktualizácií došlo k chybe</system:String>

Flow.Launcher/Languages/zh-cn.xaml

@@ -4,7 +4,7 @@
     <!--主窗体-->
     <system:String x:Key="registerHotkeyFailed">注册热键：{0} 失败</system:String>
     <system:String x:Key="couldnotStartCmd">启动命令 {0} 失败</system:String>
-    <system:String x:Key="invalidFlowLauncherPluginFileFormat">不是合法的Flow Launcher插件格式</system:String>
+    <system:String x:Key="invalidFlowLauncherPluginFileFormat">Flow Launcher插件格式错误</system:String>
     <system:String x:Key="setAsTopMostInThisQuery">在当前查询中置顶</system:String>
     <system:String x:Key="cancelTopMostInThisQuery">取消置顶</system:String>
     <system:String x:Key="executeQuery">执行查询：{0}</system:String>
@@ -17,28 +17,37 @@
     <!--设置，通用-->
     <system:String x:Key="flowlauncher_settings">Flow Launcher设置</system:String>
     <system:String x:Key="general">通用</system:String>
-    <system:String x:Key="startFlowLauncherOnSystemStartup">开机启动</system:String>
+    <system:String x:Key="portableMode">便携模式</system:String>
+    <system:String x:Key="startFlowLauncherOnSystemStartup">开机自动启动</system:String>
     <system:String x:Key="hideFlowLauncherWhenLoseFocus">失去焦点时自动隐藏Flow Launcher</system:String>
     <system:String x:Key="dontPromptUpdateMsg">不显示新版本提示</system:String>
     <system:String x:Key="rememberLastLocation">记住上次启动位置</system:String>
     <system:String x:Key="language">语言</system:String>
     <system:String x:Key="lastQueryMode">上次搜索关键字模式</system:String>
     <system:String x:Key="LastQueryPreserved">保留上次搜索关键字</system:String>
-    <system:String x:Key="LastQuerySelected">全选上次搜索关键字</system:String>
+    <system:String x:Key="LastQuerySelected">选择上次搜索关键字</system:String>
     <system:String x:Key="LastQueryEmpty">清空上次搜索关键字</system:String>
     <system:String x:Key="maxShowResults">最大结果显示个数</system:String>
     <system:String x:Key="ignoreHotkeysOnFullscreen">全屏模式下忽略热键</system:String>
     <system:String x:Key="pythonDirectory">Python 路径</system:String>
     <system:String x:Key="autoUpdates">自动更新</system:String>
-    <system:String x:Key="selectPythonDirectory">Select</system:String>
+    <system:String x:Key="selectPythonDirectory">选择</system:String>
     <system:String x:Key="hideOnStartup">启动时不显示主窗口</system:String>
     <system:String x:Key="hideNotifyIcon">隐藏任务栏图标</system:String>
+    <system:String x:Key="querySearchPrecision">查询搜索精度</system:String>
+    <system:String x:Key="ShouldUsePinyin">启动拼音搜索</system:String>
+    <system:String x:Key="ShouldUsePinyinToolTip">允许使用拼音进行搜索。</system:String>
 
     <!--设置，插件-->
     <system:String x:Key="plugin">插件</system:String>
     <system:String x:Key="browserMorePlugins">浏览更多插件</system:String>
+    <system:String x:Key="enable">启用</system:String>
     <system:String x:Key="disable">禁用</system:String>
     <system:String x:Key="actionKeywords">触发关键字</system:String>
+    <system:String x:Key="currentActionKeywords">当前操作关键字：</system:String>
+    <system:String x:Key="newActionKeyword">新动作关键字：</system:String>
+    <system:String x:Key="currentPriority">当前优先级：</system:String>
+    <system:String x:Key="newPriority">新优先级：</system:String>
     <system:String x:Key="pluginDirectory">插件目录</system:String>
     <system:String x:Key="author">作者</system:String>
     <system:String x:Key="plugin_init_time">加载耗时</system:String>
@@ -47,6 +56,7 @@
     <!--设置，主题-->
     <system:String x:Key="theme">主题</system:String>
     <system:String x:Key="browserMoreThemes">浏览更多主题</system:String>
+    <system:String x:Key="hiThere">在这里输入</system:String>
     <system:String x:Key="queryBoxFont">查询框字体</system:String>
     <system:String x:Key="resultItemFont">结果项字体</system:String>
     <system:String x:Key="windowMode">窗口模式</system:String>
@@ -65,6 +75,9 @@
     <system:String x:Key="add">增加</system:String>
     <system:String x:Key="pleaseSelectAnItem">请选择一项</system:String>
     <system:String x:Key="deleteCustomHotkeyWarning">你确定要删除插件 {0} 的热键吗？</system:String>
+    <system:String x:Key="queryWindowShadowEffect">查询窗口阴影效果</system:String>
+    <system:String x:Key="shadowEffectCPUUsage">阴影效果将占用大量的GPU资源。</system:String>
+    <system:String x:Key="shadowEffectPerformance">如果您的计算机性能有限，则不建议使用。</system:String>
 
     <!--设置，代理-->
     <system:String x:Key="proxy">HTTP 代理</system:String>
@@ -88,8 +101,18 @@
     <system:String x:Key="version">版本</system:String>
     <system:String x:Key="about_activate_times">你已经激活了Flow Launcher {0} 次</system:String>
     <system:String x:Key="checkUpdates">检查更新</system:String>
-    <system:String x:Key="newVersionTips">发现新版本 {0} , 请重启 flowlauncher。</system:String>
+    <system:String x:Key="newVersionTips">发现新版本 {0} , 请重启 Flow Launcher。</system:String>
+        <system:String x:Key="checkUpdatesFailed">下载更新失败，请检查您与 api.github.com 的连接状态或检查代理设置。</system:String>
+    <system:String x:Key="downloadUpdatesFailed">
+        下载更新失败，请检查您与 github-cloud.s3.amazonaws.com 的连接状态或检查代理设置， 
+        或访问 https://github.com/Flow-Launcher/Flow.Launcher/releases 手动下载更新。
+    </system:String>
     <system:String x:Key="releaseNotes">更新说明:</system:String>
+    <system:String x:Key="documentation">使用技巧:</system:String>
+
+    <!--优先级设置对话框-->
+    <system:String x:Key="priority_tips">数字越大，结果排名越高。如果你想要结果比任何其他插件的低，请使用负数</system:String>
+    <system:String x:Key="invalidPriority">请提供有效的整数作为优先级设置值！</system:String>
 
     <!--Action Keyword 设置对话框-->
     <system:String x:Key="oldActionKeywords">旧触发关键字</system:String>
@@ -98,11 +121,13 @@
     <system:String x:Key="done">确定</system:String>
     <system:String x:Key="cannotFindSpecifiedPlugin">找不到指定的插件</system:String>
     <system:String x:Key="newActionKeywordsCannotBeEmpty">新触发关键字不能为空</system:String>
-    <system:String x:Key="newActionKeywordsHasBeenAssigned">新触发关键字已经被指派给其他插件了，请重新选择一个关键字</system:String>
+    <system:String x:Key="newActionKeywordsHasBeenAssigned">新触发关键字已经被指派给其他插件了，请换一个关键字</system:String>
     <system:String x:Key="success">成功</system:String>
+    <system:String x:Key="completedSuccessfully">成功完成</system:String>
     <system:String x:Key="actionkeyword_tips">如果你不想设置触发关键字，可以使用*代替</system:String>
     
     <!--Custom Query Hotkey 对话框-->
+    <system:String x:Key="customeQueryHotkeyTitle">自定义插件热键</system:String>
     <system:String x:Key="preview">预览</system:String>
     <system:String x:Key="hotkeyIsNotUnavailable">热键不可用，请选择一个新的热键</system:String>
     <system:String x:Key="invalidPluginHotkey">插件热键不合法</system:String>
@@ -127,12 +152,24 @@
     <system:String x:Key="reportWindow_report_failed">发送失败</system:String>
     <system:String x:Key="reportWindow_flowlauncher_got_an_error">Flow Launcher出错啦</system:String>
 
+    <!--General Notice-->
+    <system:String x:Key="pleaseWait">请稍等...</system:String>
+
     <!--更新-->
+    <system:String x:Key="update_flowlauncher_update_check">检查新的更新</system:String>
+    <system:String x:Key="update_flowlauncher_already_on_latest">您已经拥有最新的Flow Launcher版本</system:String>
+    <system:String x:Key="update_flowlauncher_update_found">检查到更新</system:String>
+    <system:String x:Key="update_flowlauncher_updating">更新中...</system:String>
+    <system:String x:Key="update_flowlauncher_fail_moving_portable_user_profile_data">Flow Launcher无法将您的用户配置文件数据移动到新的更新版本中。
+        请手动将您的用户配置文件数据文件夹从 {0} 到 {1}</system:String>
+    <system:String x:Key="update_flowlauncher_new_update">新的更新</system:String>
     <system:String x:Key="update_flowlauncher_update_new_version_available">发现Flow Launcher新版本 V{0}</system:String>
-    <system:String x:Key="update_flowlauncher_update_error">更新Flow Launcher出错</system:String>
+    <system:String x:Key="update_flowlauncher_update_error">尝试安装软件更新时发生错误</system:String>
     <system:String x:Key="update_flowlauncher_update">更新</system:String>
     <system:String x:Key="update_flowlauncher_update_cancel">取消</system:String>
-    <system:String x:Key="update_flowlauncher_update_restart_flowlauncher_tip">此更新需要重启Flow Launcher</system:String>
+    <system:String x:Key="update_flowlauncher_fail">更新错误</system:String>
+    <system:String x:Key="update_flowlauncher_check_connection">检查网络是否可以连接至github-cloud.s3.amazonaws.com.</system:String>
+    <system:String x:Key="update_flowlauncher_update_restart_flowlauncher_tip">此次更新需要重启Flow Launcher</system:String>
     <system:String x:Key="update_flowlauncher_update_upadte_files">下列文件会被更新</system:String>
     <system:String x:Key="update_flowlauncher_update_files">更新文件</system:String>
     <system:String x:Key="update_flowlauncher_update_upadte_description">更新日志</system:String>

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>
@@ -59,7 +60,7 @@
         <KeyBinding Key="D8" Modifiers="{Binding OpenResultCommandModifiers}" Command="{Binding OpenResultCommand}" CommandParameter="7"></KeyBinding>
         <KeyBinding Key="D9" Modifiers="{Binding OpenResultCommandModifiers}" Command="{Binding OpenResultCommand}" CommandParameter="8"></KeyBinding>
     </Window.InputBindings>
-    <Grid Width="750">
+    <Grid>
         <Border Style="{DynamicResource WindowBorderStyle}" MouseDown="OnMouseDown" CornerRadius="5" >
             <StackPanel Orientation="Vertical">
                 <Grid>
@@ -78,7 +79,6 @@
                     Style="{DynamicResource QueryBoxStyle}"
                      Text="{Binding QueryText, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                      PreviewDragOver="OnPreviewDragOver"
-                     TextChanged="OnTextChanged"
                      AllowDrop="True"
                      Visibility="Visible"
                     Background="Transparent"

Flow.Launcher/MainWindow.xaml.cs

@@ -1,5 +1,6 @@
 using System;
 using System.ComponentModel;
+using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Input;
 using System.Windows.Media.Animation;
@@ -10,6 +11,7 @@ using Flow.Launcher.Core.Resource;
 using Flow.Launcher.Helper;
 using Flow.Launcher.Infrastructure.UserSettings;
 using Flow.Launcher.ViewModel;
+using Application = System.Windows.Application;
 using Screen = System.Windows.Forms.Screen;
 using ContextMenuStrip = System.Windows.Forms.ContextMenuStrip;
 using DataFormats = System.Windows.DataFormats;
@@ -22,7 +24,6 @@ namespace Flow.Launcher
 {
     public partial class MainWindow
     {
-
         #region Private Fields
 
         private readonly Storyboard _progressBarStoryboard = new Storyboard();
@@ -40,20 +41,23 @@ namespace Flow.Launcher
             _settings = settings;
             InitializeComponent();
         }
+
         public MainWindow()
         {
             InitializeComponent();
         }
 
-        private void OnClosing(object sender, CancelEventArgs e)
+        private async void OnClosing(object sender, CancelEventArgs e)
         {
             _notifyIcon.Visible = false;
             _viewModel.Save();
+            e.Cancel = true;
+            await PluginManager.DisposePluginsAsync();
+            Application.Current.Shutdown();
         }
 
         private void OnInitialized(object sender, EventArgs e)
         {
-
         }
 
         private void OnLoaded(object sender, RoutedEventArgs _)
@@ -61,8 +65,6 @@ namespace Flow.Launcher
             // show notify icon when flowlauncher is hidden
             InitializeNotifyIcon();
 
-            // todo is there a way to set blur only once?
-            ThemeManager.Instance.SetBlurForWindow();
             WindowsInteropHelper.DisableControlBox(this);
             InitProgressbarAnimation();
             InitializePosition();
@@ -72,47 +74,64 @@ namespace Flow.Launcher
 
             _viewModel.PropertyChanged += (o, e) =>
             {
-                if (e.PropertyName == nameof(MainViewModel.MainWindowVisibility))
+                switch (e.PropertyName)
                 {
-                    if (_viewModel.MainWindowVisibility == Visibility.Visible)
+                    case nameof(MainViewModel.MainWindowVisibility):
                     {
-                        Activate();
-                        QueryTextBox.Focus();
-                        UpdatePosition();
-                        _settings.ActivateTimes++;
-                        if (!_viewModel.LastQuerySelected)
+                        if (_viewModel.MainWindowVisibility == Visibility.Visible)
                         {
-                            QueryTextBox.SelectAll();
-                            _viewModel.LastQuerySelected = true;
+                            Activate();
+                            QueryTextBox.Focus();
+                            UpdatePosition();
+                            _settings.ActivateTimes++;
+                            if (!_viewModel.LastQuerySelected)
+                            {
+                                QueryTextBox.SelectAll();
+                                _viewModel.LastQuerySelected = true;
+                            }
+
+                            if (_viewModel.ProgressBarVisibility == Visibility.Visible && isProgressBarStoryboardPaused)
+                            {
+                                _progressBarStoryboard.Begin(ProgressBar, true);
+                                isProgressBarStoryboardPaused = false;
+                            }
                         }
 
-                        if (_viewModel.ProgressBarVisibility == Visibility.Visible && isProgressBarStoryboardPaused)
+                        if (!isProgressBarStoryboardPaused)
                         {
-                            _progressBarStoryboard.Resume();
-                            isProgressBarStoryboardPaused = false;
-                        }
-                    }
-                    else if (!isProgressBarStoryboardPaused)
-                    {
-                        _progressBarStoryboard.Pause();
-                        isProgressBarStoryboardPaused = true;
-                    }
-                }
-                else if (e.PropertyName == nameof(MainViewModel.ProgressBarVisibility))
-                {
-                    Dispatcher.Invoke(() =>
-                    {
-                        if (_viewModel.ProgressBarVisibility == Visibility.Hidden && !isProgressBarStoryboardPaused)
-                        {
-                            _progressBarStoryboard.Pause();
+                            _progressBarStoryboard.Stop(ProgressBar);
                             isProgressBarStoryboardPaused = true;
                         }
-                        else if (_viewModel.MainWindowVisibility == Visibility.Visible && isProgressBarStoryboardPaused)
+
+                        break;
+                    }
+                    case nameof(MainViewModel.ProgressBarVisibility):
+                    {
+                        Dispatcher.Invoke(async () =>
                         {
-                            _progressBarStoryboard.Resume();
-                            isProgressBarStoryboardPaused = false;
+                            if (_viewModel.ProgressBarVisibility == Visibility.Hidden && !isProgressBarStoryboardPaused)
+                            {
+                                await Task.Delay(50);
+                                _progressBarStoryboard.Stop(ProgressBar);
+                                isProgressBarStoryboardPaused = true;
+                            }
+                            else if (_viewModel.MainWindowVisibility == Visibility.Visible &&
+                                     isProgressBarStoryboardPaused)
+                            {
+                                _progressBarStoryboard.Begin(ProgressBar, true);
+                                isProgressBarStoryboardPaused = false;
+                            }
+                        }, System.Windows.Threading.DispatcherPriority.Render);
+
+                        break;
+                    }
+                    case nameof(MainViewModel.QueryTextCursorMovedToEnd):
+                        if (_viewModel.QueryTextCursorMovedToEnd)
+                        {
+                            MoveQueryTextToEnd();
+                            _viewModel.QueryTextCursorMovedToEnd = false;
                         }
-                    }, System.Windows.Threading.DispatcherPriority.Render);
+                        break;
                 }
             };
             _settings.PropertyChanged += (o, e) =>
@@ -189,14 +208,15 @@ namespace Flow.Launcher
 
         private void InitProgressbarAnimation()
         {
-            var da = new DoubleAnimation(ProgressBar.X2, ActualWidth + 100, new Duration(new TimeSpan(0, 0, 0, 0, 1600)));
+            var da = new DoubleAnimation(ProgressBar.X2, ActualWidth + 100,
+                new Duration(new TimeSpan(0, 0, 0, 0, 1600)));
             var da1 = new DoubleAnimation(ProgressBar.X1, ActualWidth, new Duration(new TimeSpan(0, 0, 0, 0, 1600)));
             Storyboard.SetTargetProperty(da, new PropertyPath("(Line.X2)"));
             Storyboard.SetTargetProperty(da1, new PropertyPath("(Line.X1)"));
             _progressBarStoryboard.Children.Add(da);
             _progressBarStoryboard.Children.Add(da1);
             _progressBarStoryboard.RepeatBehavior = RepeatBehavior.Forever;
-            ProgressBar.BeginStoryboard(_progressBarStoryboard);
+
             _viewModel.ProgressBarVisibility = Visibility.Hidden;
             isProgressBarStoryboardPaused = true;
         }
@@ -210,10 +230,10 @@ namespace Flow.Launcher
         {
             if (sender != null && e.OriginalSource != null)
             {
-                var r = (ResultListBox)sender;
-                var d = (DependencyObject)e.OriginalSource;
+                var r = (ResultListBox) sender;
+                var d = (DependencyObject) e.OriginalSource;
                 var item = ItemsControl.ContainerFromElement(r, d) as ListBoxItem;
-                var result = (ResultViewModel)item?.DataContext;
+                var result = (ResultViewModel) item?.DataContext;
                 if (result != null)
                 {
                     if (e.ChangedButton == MouseButton.Left)
@@ -316,13 +336,9 @@ namespace Flow.Launcher
             }
         }
 
-        private void OnTextChanged(object sender, TextChangedEventArgs e)
+        private void MoveQueryTextToEnd()
         {
-            if (_viewModel.QueryTextCursorMovedToEnd)
-            {
-                QueryTextBox.CaretIndex = QueryTextBox.Text.Length;
-                _viewModel.QueryTextCursorMovedToEnd = false;
-            }
+            QueryTextBox.CaretIndex = QueryTextBox.Text.Length;
         }
     }
 }