Show toast when QL unavailable

Author: VictoriousRaptor

Flow.Launcher/Helper/QuickLookHelper.cs

@@ -6,6 +6,7 @@
 using System.Security.Principal;
 using System.Threading.Tasks;
 using Flow.Launcher.Infrastructure.Logger;
+using Flow.Launcher.Core.Resource;
 
 namespace Flow.Launcher.Helper
 {
@@ -17,42 +18,47 @@ internal static class QuickLookHelper
         private static readonly string pipeMessageToggle = "QuickLook.App.PipeMessages.Toggle";
         private static readonly string pipeMessageClose = "QuickLook.App.PipeMessages.Close";
         private static readonly string pipeMessageInvoke = "QuickLook.App.PipeMessages.Invoke";
-
+        
         /// <summary>
         /// Toggle QuickLook
         /// </summary>
         /// <param name="path">File path to preview</param>
         /// <param name="switchPreview">Is swtiching file</param>
         /// <returns></returns>
         public static async Task<bool> ToggleQuickLookAsync(string path, bool switchPreview = false)
-        {
-            //bool isQuickLookAvailable = await DetectQuickLookAvailabilityAsync();
-
-            //if (!isQuickLookAvailable)
-            //{
-            //    if (!switchPreview)
-            //    {
-            //        Log.Warn($"{nameof(QuickLookHelper)}", "QuickLook not detected");
-            //    }
-            //    return;
-            //}
-
+        {           
             if (string.IsNullOrEmpty(path))
                 return false;
 
-            return await SendQuickLookPipeMsgAsync(switchPreview ? pipeMessageSwitch : pipeMessageToggle, path);
+            bool success = await SendQuickLookPipeMsgAsync(switchPreview ? pipeMessageSwitch : pipeMessageToggle, path);
+            if (!success)
+            {
+                ShowQuickLookUnavailableToast();
+            }
+            return success;
         }
 
         public static async Task<bool> CloseQuickLookAsync()
         {
-            return await SendQuickLookPipeMsgAsync(pipeMessageClose);
+            bool success = await SendQuickLookPipeMsgAsync(pipeMessageClose);
+            if (!success)
+            {
+                ShowQuickLookUnavailableToast();
+            }
+            return success;
         }
 
         public static async Task<bool> OpenQuickLookAsync(string path)
         {
             if (string.IsNullOrEmpty(path))
                 return false;
-            return await SendQuickLookPipeMsgAsync(pipeMessageInvoke, path);
+
+            bool success = await SendQuickLookPipeMsgAsync(pipeMessageInvoke, path);
+            if (!success)
+            {
+                ShowQuickLookUnavailableToast();
+            }
+            return success;
         }
 
         private static async Task<bool> SendQuickLookPipeMsgAsync(string message, string arg = "")
@@ -80,7 +86,7 @@ private static async Task<bool> SendQuickLookPipeMsgAsync(string message, string
             return true;
         }
 
-        private static async Task<bool> DetectQuickLookAvailabilityAsync()
+        public static async Task<bool> DetectQuickLookAvailabilityAsync()
         {
             static async Task<int> QuickLookServerAvailable()
             {
@@ -115,5 +121,11 @@ static async Task<int> QuickLookServerAvailable()
                 return false;
             }
         }
+        
+        private static void ShowQuickLookUnavailableToast()
+        {
+            Notification.Show(InternationalizationManager.Instance.GetTranslation("QuickLookFail"),
+                              InternationalizationManager.Instance.GetTranslation("QuickLookFailTips"));
+        }
     }
 }

Flow.Launcher/Languages/en.xaml

@@ -309,6 +309,8 @@
 
     <!--  General Notice  -->
     <system:String x:Key="pleaseWait">Please wait...</system:String>
+    <system:String x:Key="QuickLookFail">Failed to launch QuickLook</system:String>
+    <system:String x:Key="QuickLookFailTips">Please check if QuickLook is running.</system:String>
 
     <!--  Update  -->
     <system:String x:Key="update_flowlauncher_update_check">Checking for new update</system:String>