Improve message noticification

Author: Jack251970

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

@@ -48,7 +48,8 @@
 
     <system:String x:Key="flowlauncher_plugin_program_pls_select_program_source">Please select a program source</system:String>
     <system:String x:Key="flowlauncher_plugin_program_delete_program_source">Are you sure you want to delete the selected program sources?</system:String>
-    <system:String x:Key="flowlauncher_plugin_program_delete_program_source_not_user_added">Please select program sources that you added</system:String>
+    <system:String x:Key="flowlauncher_plugin_program_delete_program_source_user_added">Please select program sources that are not added by you</system:String>
+    <system:String x:Key="flowlauncher_plugin_program_delete_program_source_not_user_added">Please select program sources that are added by you</system:String>
     <system:String x:Key="flowlauncher_plugin_program_duplicate_program_source">Another program source with the same location already exists.</system:String>
 
     <system:String x:Key="flowlauncher_plugin_program_edit_program_source_title">Program Source</system:String>

Plugins/Flow.Launcher.Plugin.Program/Views/ProgramSetting.xaml.cs

@@ -303,6 +303,13 @@ private async void btnProgramSourceStatus_OnClick(object sender, RoutedEventArgs
                 return;
             }
 
+            if (IsAllItemsUserAdded(selectedItems))
+            {
+                var msg1 = context.API.GetTranslation("flowlauncher_plugin_program_delete_program_source_not_user_added");
+                context.API.ShowMsgBox(msg1);
+                return;
+            }
+
             if (HasMoreOrEqualEnabledItems(selectedItems))
             {
                 await ProgramSettingDisplay.SetProgramSourcesStatusAsync(selectedItems, false);