Add new helper method & Improve code quality

Author: Jack251970

Flow.Launcher.Plugin/SharedCommands/FilesFolders.cs

@@ -150,6 +150,16 @@ public static bool FileExists(this string filePath)
             return File.Exists(filePath);
         }
 
+        /// <summary>
+        /// Checks if a file or directory exists
+        /// </summary>
+        /// <param name="path"></param>
+        /// <returns></returns>
+        public static bool FileOrLocationExists(this string path)
+        {
+            return LocationExists(path) || FileExists(path);
+        }
+
         /// <summary>
         /// Open a directory window (using the OS's default handler, usually explorer)
         /// </summary>

Flow.Launcher/PublicAPIInstance.cs

@@ -74,7 +74,6 @@ public void ChangeQuery(string query, bool requery = false)
             _mainVM.ChangeQueryText(query, requery);
         }
 
-        [System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "VSTHRD100:Avoid async void methods", Justification = "<Pending>")]
         public void RestartApp()
         {
             _mainVM.Hide();
@@ -179,7 +178,7 @@ public async void CopyToClipboard(string stringToCopy, bool directCopy = false,
 
                     Clipboard.SetFileDropList(paths);
                 });
-                
+
                 if (exception == null)
                 {
                     if (showDefaultNotification)
@@ -218,7 +217,7 @@ public async void CopyToClipboard(string stringToCopy, bool directCopy = false,
                 {
                     LogException(nameof(PublicAPIInstance), "Failed to copy text to clipboard", exception);
                     ShowMsgError(GetTranslation("failedToCopy"));
-                }  
+                }
             }
         }
 
@@ -327,7 +326,7 @@ public void SavePluginSettings()
 
             ((PluginJsonStorage<T>)_pluginJsonStorages[type]).Save();
         }
-        
+
         public void OpenDirectory(string directoryPath, string fileNameOrFilePath = null)
         {
             try
@@ -412,7 +411,7 @@ public void OpenDirectory(string directoryPath, string fileNameOrFilePath = null
 
         private void OpenUri(Uri uri, bool? inPrivate = null, bool forceBrowser = false)
         {
-            if (uri.IsFile && !File.Exists(uri.LocalPath) && !Directory.Exists(uri.LocalPath))
+            if (uri.IsFile && !FilesFolders.FileOrLocationExists(uri.LocalPath))
             {
                 ShowMsgError(GetTranslation("errorTitle"), string.Format(GetTranslation("fileNotFoundError"), uri.LocalPath));
                 return;
@@ -493,7 +492,7 @@ public void OpenAppUri(Uri appUri)
             OpenUri(appUri);
         }
 
-        public void ToggleGameMode() 
+        public void ToggleGameMode()
         {
             _mainVM.ToggleGameMode();
         }