File explorer support

.github/workflows/build.yml

@@ -8,11 +8,11 @@ jobs:
   build:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Setup .NET
-        uses: actions/setup-dotnet@v1
+        uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 3.1.301
+          dotnet-version: 5.0.x
       - name: Restore dependencies
         run: dotnet restore
       - name: Build

.github/workflows/publish.yml

@@ -11,11 +11,11 @@ jobs:
   publish:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Setup .NET
-        uses: actions/setup-dotnet@v1
+        uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 3.1.301
+          dotnet-version: 5.0.x
       - name: get version
         id: version
         uses: notiz-dev/github-action-json-property@release

README.md

@@ -5,9 +5,11 @@ This port is intended to be used for [Flow Launcher](https://github.com/Flow-Lau
 
 **New with this port:** 
 
-Use {*} flag in your setting argument to allow infinite arguments passed through the query window. For this to work the setting argument needs to end with `{*}`
+- Use {*} flag in your setting argument to allow infinite arguments passed through the query window. For this to work the setting argument needs to end with `{*}`
 
-Use {0} in your setting argument to pass just one argument. For this to work the setting argument needs to end with `{0}`, e.g. `-p {0}`. You can also specify multiple additional arguments e.g. `-h {0} -p {1}` with query `r shortcut1 myremotecomp 22`, this will pass the arguments in as `-h myremotecomp -p 22`.
+- Use {0} in your setting argument to pass just one argument. For this to work the setting argument needs to end with `{0}`, e.g. `-p {0}`. You can also specify multiple additional arguments e.g. `-h {0} -p {1}` with query `r shortcut1 myremotecomp 22`, this will pass the arguments in as `-h myremotecomp -p 22`.
+
+- Use the currently open file explorer window as the working directory for various commands. For example `code .` would open current folder in VSCode
 
 **Installation**
 

Wox.Plugin.Runner/Command.cs

@@ -7,10 +7,10 @@ namespace Wox.Plugin.Runner
 {
     public class Command
     {
-        public string Shortcut { get; set; }
-        public string Description { get; set; }
-        public string Path { get; set; }
-        public string WorkingDirectory { get; set; }
-        public string ArgumentsFormat { get; set; }
+        public string Shortcut { get; set; } = "";
+        public string Description { get; set; } = "";
+        public string Path { get; set; } = "";
+        public string WorkingDirectory { get; set; } = "";
+        public string ArgumentsFormat { get; set; } = "";
     }
 }

Wox.Plugin.Runner/ConfigurationLoader.cs

@@ -33,7 +33,7 @@ public IEnumerable<Command> LoadCommands()
         {
             var text = File.ReadAllText(configFile);
             if (!string.IsNullOrEmpty(text))
-                return JsonSerializer.Deserialize<IEnumerable<Command>>(text);
+                return JsonSerializer.Deserialize<IEnumerable<Command>>(text) ?? new List<Command>();
 
             return new List<Command>();
         }

Wox.Plugin.Runner/Infrastructure/NullToVisibilityConverter.cs

@@ -9,12 +9,9 @@ namespace Wox.Plugin.Runner.Infrastructure
 {
     class NullToVisibilityConverter : IValueConverter
     {
-        public object Convert( object value, Type targetType, object parameter, System.Globalization.CultureInfo culture )
+        public object Convert( object? value, Type targetType, object parameter, System.Globalization.CultureInfo culture )
         {
-            if ( value == null )
-                return Visibility.Hidden;
-            else
-                return Visibility.Visible;
+            return value == null ? Visibility.Hidden : Visibility.Visible;
         }
 
         public object ConvertBack( object value, Type targetType, object parameter, System.Globalization.CultureInfo culture )

Wox.Plugin.Runner/Runner.cs

@@ -12,8 +12,8 @@ namespace Wox.Plugin.Runner
 {
     public class Runner : IPlugin, ISettingProvider
     {
-        internal static PluginInitContext Context;
-        RunnerSettingsViewModel viewModel;
+        internal static PluginInitContext Context = null!;
+        RunnerSettingsViewModel? viewModel;
 
         public void Init(PluginInitContext context)
         {
@@ -93,16 +93,18 @@ private List<Result> FuzzySearchCommand(string shortcut, string[] terms)
 
         public Control CreateSettingPanel()
         {
-            return new RunnerSettings(viewModel);
+            return new RunnerSettings(viewModel!);
         }
 
-        private bool RunCommand(ActionContext e, Command command, IEnumerable<string> terms = null)
+        private bool RunCommand(ActionContext e, Command command, IEnumerable<string>? terms = null)
         {
             try
             {
                 var args = GetProcessArguments(command, terms);
-                var startInfo = new ProcessStartInfo(args.FileName, args.Arguments);
-                startInfo.UseShellExecute = true;
+                var startInfo = new ProcessStartInfo(args.FileName, args.Arguments)
+                {
+                    UseShellExecute = true
+                };
                 if (args.WorkingDirectory != null)
                 {
                     startInfo.WorkingDirectory = args.WorkingDirectory;
@@ -116,14 +118,15 @@ private bool RunCommand(ActionContext e, Command command, IEnumerable<string> te
                 if (w32Ex.Message != "The operation was canceled by the user")
                     throw;
             }
-            catch (FormatException)
+            catch (FormatException ex)
             {
                 Context.API.ShowMsg("There was a problem. Please check the arguments format for the command.");
+                Context.API.LogException(nameof(Runner), "Argument format was invalid", ex);
             }
             return true;
         }
 
-        private ProcessArguments GetProcessArguments(Command c, IEnumerable<string> terms)
+        private ProcessArguments GetProcessArguments(Command c, IEnumerable<string>? terms)
         {
             var argString = string.Empty;
 
@@ -135,7 +138,7 @@ private ProcessArguments GetProcessArguments(Command c, IEnumerable<string> term
                     // remove '{*}' flag from arguments
                     argString = c.ArgumentsFormat.Remove(c.ArgumentsFormat.Length - 3, 3);
                     // add user specified arguments to the arguments to be passed
-                    argString = argString + string.Join(" ", terms);
+                    argString += terms != null ? string.Join(" ", terms) : "";
                 }
                 // command's arguments HAS flag/s, thus user is able to manually pass in arguments e.g. settings: {0} {1}
                 // or command's arguments HAS set normal text arguments e.g. settings: -h myremotecomp -p 22
@@ -148,11 +151,18 @@ private ProcessArguments GetProcessArguments(Command c, IEnumerable<string> term
             }
 
             var workingDir = c.WorkingDirectory;
+            if (workingDir == "{explorer}")
+            {
+                var openExplorerPaths = ExplorerPathsService.GetOpenExplorerPaths();
+                workingDir = openExplorerPaths.FirstOrDefault();
+            }
+
             if (string.IsNullOrEmpty(workingDir))
             {
                 // Use directory where executable is based.
                 workingDir = Path.GetDirectoryName(c.Path);
-            }
+            } 
+
             return new ProcessArguments
             {
                 FileName = c.Path,
@@ -163,9 +173,9 @@ private ProcessArguments GetProcessArguments(Command c, IEnumerable<string> term
 
         class ProcessArguments
         {
-            public string FileName { get; set; }
-            public string Arguments { get; set; }
-            public string WorkingDirectory { get; set; }
+            public string FileName { get; set; } = "";
+            public string Arguments { get; set; } = "";
+            public string? WorkingDirectory { get; set; }
         }
     }
 }

Wox.Plugin.Runner/RunnerConfiguration.cs

@@ -8,7 +8,7 @@ namespace Wox.Plugin.Runner
 {
     static class RunnerConfiguration
     {
-        private static IConfigurationLoader loader;
+        private static IConfigurationLoader? loader;
         public static IConfigurationLoader Loader 
         { 
             get
@@ -21,7 +21,7 @@ public static IConfigurationLoader Loader
             }
         }
 
-        private static IEnumerable<Command> commands;
+        private static IEnumerable<Command>? commands;
         public static IEnumerable<Command> Commands
         {
             get

Wox.Plugin.Runner/Services/ExplorerPathsService.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+
+namespace Wox.Plugin.Runner
+{
+    class ExplorerPathsService
+    {
+        public static List<string> GetOpenExplorerPaths()
+        {
+            Type? type = Type.GetTypeFromProgID("Shell.Application");
+            if (type == null) return new List<string>();
+            dynamic? shell = Activator.CreateInstance(type);
+            if (shell == null) return new List<string>();
+            try
+            {
+                var fullResults = new List<ExplorerResult>();
+
+                var openWindows = shell.Windows();
+                for (int i = 0; i < openWindows.Count; i++)
+                {
+                    var window = openWindows.Item(i);
+                    if (window == null) continue;
+                    var fileName = Path.GetFileName((string)window.FullName);
+
+                    // Other things which are returned include the internet explorer and the classic control panel
+                    // We only want file explorer windows
+                    if (fileName.ToLower() == "explorer.exe")
+                    {
+                        string locationUrl = window.LocationURL;
+                        if (!string.IsNullOrEmpty(locationUrl))
+                        {
+                            fullResults.Add(new ExplorerResult(new IntPtr(window.HWND), new Uri(locationUrl).LocalPath));
+                        }
+                    }
+                }
+
+                int zIndex = fullResults.Count;
+                // EnumWindows iterates over windows in ZIndex order, basically the foremost window will be the first one
+                EnumWindows((IntPtr hwnd, IntPtr param) =>
+                {
+                    var result = fullResults.Find(v => v.HWND == hwnd);
+                    if(result != null)
+                    {
+                        result.ZIndex = zIndex;
+                        zIndex -= 1;
+                    }
+                    // zIndex is also used as a counter: how many more windows do we have to find
+                    return zIndex > 0;
+                }, IntPtr.Zero);
+
+                // sort descending and return the paths
+                return fullResults
+                    .OrderByDescending(v => v.ZIndex)
+                    .Select(v => v.Path)
+                    .ToList();
+            }
+            finally
+            {
+                Marshal.FinalReleaseComObject(shell);
+            }
+        }
+
+        private class ExplorerResult
+        {
+            /// <summary>
+            /// Higher values means that the window is closer to the user
+            /// </summary>
+            public int ZIndex { get; set; } = 0;
+            public IntPtr HWND { get; }
+            public string Path { get; }
+
+            public ExplorerResult(IntPtr hwnd, string path)
+            {
+                HWND = hwnd;
+                Path = path;
+            }
+        }
+
+        [DllImport("user32.dll")]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private static extern bool EnumWindows(EnumWindowsProc enumProc, IntPtr lParam);
+
+        // Delegate to filter which windows to include 
+        public delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
+
+
+    }
+}