Add tips for file manager usage and improve error messages

Author: onesounds

Flow.Launcher/Languages/en.xaml

@@ -366,14 +366,16 @@
 
     <!--  FileManager Setting Dialog  -->
     <system:String x:Key="fileManagerWindow">Select File Manager</system:String>
+    <system:String x:Key="fileManager_files_btn">Do you use Files?</system:String>
+    <system:String x:Key="fileManager_files_tips">Depending on the version, Files may use either "Files" or "Files-stable" as its path. (This can vary depending on which version you're using.) For more details, see:</system:String>
     <system:String x:Key="fileManager_tips">Please specify the file location of the file manager you using and add arguments as required. The &quot;%d&quot; represents the directory path to open for, used by the Arg for Folder field and for commands opening specific directories. The &quot;%f&quot; represents the file path to open for, used by the Arg for File field and for commands opening specific files.</system:String>
     <system:String x:Key="fileManager_tips2">For example, if the file manager uses a command such as &quot;totalcmd.exe /A c:\windows&quot; to open the c:\windows directory, the File Manager Path will be totalcmd.exe, and the Arg For Folder will be /A &quot;%d&quot;. Certain file managers like QTTabBar may just require a path to be supplied, in this instance use &quot;%d&quot; as the File Manager Path and leave the rest of the fileds blank.</system:String>
     <system:String x:Key="fileManager_name">File Manager</system:String>
     <system:String x:Key="fileManager_profile_name">Profile Name</system:String>
     <system:String x:Key="fileManager_path">File Manager Path</system:String>
     <system:String x:Key="fileManager_directory_arg">Arg For Folder</system:String>
     <system:String x:Key="fileManager_file_arg">Arg For File</system:String>
-    <system:String x:Key="fileManagerPathNotFound">The path for the file manager '{0}' could not be found: {1}\n\nDo you want to continue?</system:String>
+    <system:String x:Key="fileManagerPathNotFound">The path for the file manager '{0}' could not be found: '{1}' Do you want to continue?</system:String>
     <system:String x:Key="fileManagerPathError">File Manager Path Error</system:String>
 
     <!--  DefaultBrowser Setting Dialog  -->
@@ -465,8 +467,12 @@
     <system:String x:Key="reportWindow_copy_below">2. Copy below exception message</system:String>
 
     <!--  File Open Error  -->
-    <system:String x:Key="folderOpenError">An error occurred while opening the folder.:\n{0}</system:String>
+    <system:String x:Key="fileManagerNotFoundTitle">File Manager Error</system:String>
+    <system:String x:Key="fileManagerNotFound">
+        The specified file manager could not be found. Please check the Custom File Manager setting under Settings >General.
+    </system:String>
     <system:String x:Key="errorTitle">Error</system:String>
+    <system:String x:Key="folderOpenError">An error occurred while opening the folder. {0}</system:String>
 
     <!--  General Notice  -->
     <system:String x:Key="pleaseWait">Please wait...</system:String>

Flow.Launcher/SelectFileManagerWindow.xaml

@@ -73,9 +73,18 @@
                         <TextBlock Margin="0 14 0 0" FontSize="14">
                             <TextBlock Text="{DynamicResource fileManager_tips2}" TextWrapping="WrapWithOverflow" />
                         </TextBlock>
+                        <Button
+                            x:Name="btnTips"
+                            Margin="0 14 0 0"
+                            HorizontalAlignment="Left"
+                            Click="btnTips_Click"
+                            Content="{DynamicResource fileManager_files_btn}" />
                     </StackPanel>
-
-                    <StackPanel Margin="14 28 0 0" Orientation="Horizontal">
+                    <Rectangle
+                        Height="1"
+                        Margin="0 20 0 20"
+                        Fill="{StaticResource SeparatorForeground}" />
+                    <StackPanel Margin="14 0 0 0" Orientation="Horizontal">
                         <TextBlock
                             Grid.Column="1"
                             HorizontalAlignment="Left"
@@ -111,7 +120,7 @@
                     <Rectangle
                         Height="1"
                         Margin="0 20 0 12"
-                        Fill="{StaticResource Color03B}" />
+                        Fill="{StaticResource SeparatorForeground}" />
                     <StackPanel
                         Margin="0 0 0 0"
                         HorizontalAlignment="Stretch"

Flow.Launcher/SelectFileManagerWindow.xaml.cs

@@ -6,9 +6,11 @@
 using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Documents;
 using CommunityToolkit.Mvvm.ComponentModel;
 using Flow.Launcher.Infrastructure.UserSettings;
 using Flow.Launcher.ViewModel;
+using ModernWpf.Controls;
 
 namespace Flow.Launcher
 {
@@ -102,6 +104,50 @@ private bool IsFileManagerValid(string path)
             }
         }
 
+        private async void btnTips_Click(object sender, RoutedEventArgs e)
+        {
+            string tipText = (string)Application.Current.Resources["fileManager_files_tips"];
+            string url = "https://files.community/docs/contributing/updates";
+    
+            var textBlock = new TextBlock
+            {
+                FontSize = 14,
+                TextWrapping = TextWrapping.Wrap,
+                Margin = new Thickness(0, 0, 0, 0)
+            };
+            
+            textBlock.Inlines.Add(tipText);
+            
+            Hyperlink hyperlink = new Hyperlink
+            {
+                NavigateUri = new Uri(url)
+            };
+            hyperlink.Inlines.Add(url);
+            hyperlink.RequestNavigate += (s, args) =>
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = args.Uri.AbsoluteUri,
+                    UseShellExecute = true
+                });
+                args.Handled = true;
+            };
+    
+            textBlock.Inlines.Add(hyperlink);
+    
+            var tipsDialog = new ContentDialog()
+            {
+                Owner = Window.GetWindow(sender as DependencyObject),
+                Title = (string)Application.Current.Resources["fileManager_files_btn"],
+                Content = textBlock,
+                PrimaryButtonText = (string)Application.Current.Resources["commonOK"],
+                CornerRadius = new CornerRadius(8),
+                Style = (Style)Application.Current.Resources["ContentDialog"]
+            };
+
+            await tipsDialog.ShowAsync();
+        }
+        
         private void btnAdd_Click(object sender, RoutedEventArgs e)
         {
             CustomExplorers.Add(new()