Is it possible to group folders together at the top on Unity for MacOS? (Like on Windows)

Hi @NMD83 ! How are you?

So, problem lay here

```

 // not actually code
 //        foreach browser in UnityEditor.ProjectBrowser.s_ProjectBrowsers
 //            browser.m_AssetTree.data.foldersFirst = true
 //            browser.m_ListArea.foldersFirst = true

 [InitializeOnLoad]
 public static class ProjectBrowserExtension {
     static ProjectBrowserExtension()
     {
         EditorApplication.projectChanged += OnChanged;
         EditorApplication.playModeStateChanged += OnPlayMode;
         EditorApplication.projectWindowItemOnGUI += OnFirstTime;
     }

     private static void OnFirstTime(string guid, Rect selectionrect)
     {
         EditorApplication.projectWindowItemOnGUI -= OnFirstTime;
         Refresh();
     }

     private static void OnChanged() => Refresh();

     private static void OnPlayMode(PlayModeStateChange obj) => Refresh();
     /// <summary>
     /// По сути, присваиваем значение определенной переменной:
     /// foreach browser in UnityEditor.ProjectBrowser.s_ProjectBrowsers
     ///     browser.m_AssetTree.data.foldersFirst = true
     ///     browser.m_ListArea.foldersFirst = true
     /// </summary>
     private static void Refresh()
     {
         var assembly = Assembly.GetAssembly(typeof(Editor));
         var projectBrowser = assembly.GetType("UnityEditor.ProjectBrowser");
         var field = projectBrowser.GetField("s_ProjectBrowsers", BindingFlags.Static | BindingFlags.NonPublic);

         if (field == null)
             return;

         var list = (IEnumerable) field.GetValue(projectBrowser);
         foreach (var pb in list)
             SetFolderFirstForProjectWindow(pb);
     }

     private static void SetFolderFirstForProjectWindow(object pb)
     {
         var members = pb.GetType().GetRuntimeFields();
         foreach (var member in members)
             switch (member.Name)
             {
                 // One column
                 case "m_AssetTree":
                     SetOneColumnFolderFirst(pb, member);
                     break;
                 // Two column
                 case "m_ListArea":
                     SetTwoColumnFolderFirst(pb, member);
                     break;
             }
     }

     private static void SetTwoColumnFolderFirst(object pb, FieldInfo listAreaField)
     {
         if (listAreaField == null)
             return;
         var listArea = listAreaField.GetValue(pb);
         var folderFirst = listArea.GetType().GetProperties().Single(x => x.Name == "foldersFirst");
         folderFirst.SetValue(listArea, true);
     }

     private static void SetOneColumnFolderFirst(object pb, FieldInfo assetTreeField)
     {
         if (assetTreeField == null)
             return;

         var assetTree = assetTreeField.GetValue(pb);
         var data = assetTree.GetType().GetRuntimeProperties().Single(x => x.Name == "data");
         // AssetsTreeViewDataSource
         var dataSource = data.GetValue(assetTree);
         var folderFirst = dataSource.GetType().GetProperties().Single(x => x.Name == "foldersFirst");
         folderFirst.SetValue(dataSource, true);
     }
 }

i'm also looking for the same thing. this folder-file sorting is killing my production speed.

Sorry to raise this post, but had to tweak some of the code to get it to work, thought I would share.

thank you @WeslomPo for the original!

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using UnityEngine;
 using UnityEditor;
 using System.Reflection;
 
 [InitializeOnLoad]
 public static class ProjectBrowserExtension
 {
     private const string k_UnityEditorProjectBrowserAssemblyName = "UnityEditor.ProjectBrowser";
     private const string k_ProjectBrowsersFieldName = "s_ProjectBrowsers";
     private const string k_AssetTreeFieldName = "m_AssetTree";
     private const string k_ListAreaFieldName = "m_ListArea";
     private const string k_DataFieldName = "data";
     private const string k_FoldersFirstFieldName = "foldersFirst";
 
     private static readonly object s_BoolTrue = true;
     
     static ProjectBrowserExtension()
      {
          EditorApplication.projectChanged += OnChanged;
          EditorApplication.playModeStateChanged += OnPlayMode;
          EditorApplication.projectWindowItemOnGUI += OnFirstTime;
      }
      private static void OnFirstTime(string guid, Rect _)
      {
          EditorApplication.projectWindowItemOnGUI -= OnFirstTime;
          Refresh();
      }
      private static void OnChanged() => Refresh();
      private static void OnPlayMode(PlayModeStateChange obj) => Refresh();
      
      /// <summary>
      /// foreach browser in UnityEditor.ProjectBrowser.s_ProjectBrowsers
      ///     browser.m_AssetTree.data.foldersFirst = true
      ///     browser.m_ListArea.foldersFirst = true
      /// </summary>
      private static void Refresh()
      {
          Assembly assembly = Assembly.GetAssembly(typeof(UnityEditor.Editor));
          Type projectBrowser = assembly.GetType(k_UnityEditorProjectBrowserAssemblyName);
          FieldInfo field = projectBrowser.GetField(k_ProjectBrowsersFieldName, BindingFlags.Static | BindingFlags.NonPublic);
          if (field == null)
              return;
          IEnumerable list = (IEnumerable) field.GetValue(projectBrowser);
          foreach (object pb in list)
              SetFolderFirstForProjectWindow(pb);
      }
      private static void SetFolderFirstForProjectWindow(object pb)
      {
          IEnumerable<FieldInfo> members = pb.GetType().GetRuntimeFields();
          int maxMembersSought = 2;
          foreach (FieldInfo member in members)
          {
              switch (member.Name)
              {
                  // One column
                  case k_AssetTreeFieldName:
                      SetOneColumnFolderFirst(pb, member);
                      maxMembersSought--;
                      break;
                  // Two column
                  case k_ListAreaFieldName:
                      SetTwoColumnFolderFirst(pb, member);
                      maxMembersSought--;
                      break;
              }
 
              if (maxMembersSought == 0)
                  break;
          }
      }
      private static void SetTwoColumnFolderFirst(object pb, FieldInfo listAreaField)
      {
          if (listAreaField == null)
              return;
          object listArea = listAreaField.GetValue(pb);
          // safety check
          if (listArea == null)
              return;
          PropertyInfo folderFirst = listArea.GetType().GetProperties().Single(x => x.Name == k_FoldersFirstFieldName);
          folderFirst.SetValue(listArea, s_BoolTrue);
      }
      private static void SetOneColumnFolderFirst(object pb, FieldInfo assetTreeField)
      {
          if (assetTreeField == null)
              return;
          
          object assetTree = assetTreeField.GetValue(pb);
          // Fix: as we are looping all members, it's possible to end up in a case where one member is seen first, 
          // this will be null.
          if (assetTree == null)
              return;
          
          PropertyInfo data = assetTree.GetType().GetRuntimeProperties().Single(x => x.Name == k_DataFieldName);
          // AssetsTreeViewDataSource
          object dataSource = data.GetValue(assetTree);
 
          // safety check
          if (dataSource == null)
              return;
          PropertyInfo folderFirst = dataSource.GetType().GetProperties().Single(x => x.Name == k_FoldersFirstFieldName);
          folderFirst.SetValue(dataSource, s_BoolTrue);
      }
 }

,Sorry to raise this post, but had to tweak some of the code to get it to work, thought I would share.

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using UnityEngine;
 using UnityEditor;
 using System.Reflection;
 
 [InitializeOnLoad]
 public static class ProjectBrowserExtension
 {
     private const string k_UnityEditorProjectBrowserAssemblyName = "UnityEditor.ProjectBrowser";
     private const string k_ProjectBrowsersFieldName = "s_ProjectBrowsers";
     private const string k_AssetTreeFieldName = "m_AssetTree";
     private const string k_ListAreaFieldName = "m_ListArea";
     private const string k_DataFieldName = "data";
     private const string k_FoldersFirstFieldName = "foldersFirst";
 
     private static readonly object s_BoolTrue = true;
     
     static ProjectBrowserExtension()
      {
          EditorApplication.projectChanged += OnChanged;
          EditorApplication.playModeStateChanged += OnPlayMode;
          EditorApplication.projectWindowItemOnGUI += OnFirstTime;
      }
      private static void OnFirstTime(string guid, Rect _)
      {
          EditorApplication.projectWindowItemOnGUI -= OnFirstTime;
          Refresh();
      }
      private static void OnChanged() => Refresh();
      private static void OnPlayMode(PlayModeStateChange obj) => Refresh();
      
      /// <summary>
      /// foreach browser in UnityEditor.ProjectBrowser.s_ProjectBrowsers
      ///     browser.m_AssetTree.data.foldersFirst = true
      ///     browser.m_ListArea.foldersFirst = true
      /// </summary>
      private static void Refresh()
      {
          Assembly assembly = Assembly.GetAssembly(typeof(UnityEditor.Editor));
          Type projectBrowser = assembly.GetType(k_UnityEditorProjectBrowserAssemblyName);
          FieldInfo field = projectBrowser.GetField(k_ProjectBrowsersFieldName, BindingFlags.Static | BindingFlags.NonPublic);
          if (field == null)
              return;
          IEnumerable list = (IEnumerable) field.GetValue(projectBrowser);
          foreach (object pb in list)
              SetFolderFirstForProjectWindow(pb);
      }
      private static void SetFolderFirstForProjectWindow(object pb)
      {
          IEnumerable<FieldInfo> members = pb.GetType().GetRuntimeFields();
          int maxMembersSought = 2;
          foreach (FieldInfo member in members)
          {
              switch (member.Name)
              {
                  // One column
                  case k_AssetTreeFieldName:
                      SetOneColumnFolderFirst(pb, member);
                      maxMembersSought--;
                      break;
                  // Two column
                  case k_ListAreaFieldName:
                      SetTwoColumnFolderFirst(pb, member);
                      maxMembersSought--;
                      break;
              }
 
              if (maxMembersSought == 0)
                  break;
          }
      }
      private static void SetTwoColumnFolderFirst(object pb, FieldInfo listAreaField)
      {
          if (listAreaField == null)
              return;
          object listArea = listAreaField.GetValue(pb);
          // safety check
          if (listArea == null)
              return;
          PropertyInfo folderFirst = listArea.GetType().GetProperties().Single(x => x.Name == k_FoldersFirstFieldName);
          folderFirst.SetValue(listArea, s_BoolTrue);
      }
      private static void SetOneColumnFolderFirst(object pb, FieldInfo assetTreeField)
      {
          if (assetTreeField == null)
              return;
          
          object assetTree = assetTreeField.GetValue(pb);
          // Fix: as we are looping all members, it's possible to end up in a case where one member is seen first, 
          // this will be null.
          if (assetTree == null)
              return;
          
          PropertyInfo data = assetTree.GetType().GetRuntimeProperties().Single(x => x.Name == k_DataFieldName);
          // AssetsTreeViewDataSource
          object dataSource = data.GetValue(assetTree);
 
          // safety check
          if (dataSource == null)
              return;
          PropertyInfo folderFirst = dataSource.GetType().GetProperties().Single(x => x.Name == k_FoldersFirstFieldName);
          folderFirst.SetValue(dataSource, s_BoolTrue);
      }
 }

Check my answer here: https://forum.unity.com/threads/project-window-extension-script-folders-sorting-double-click-expand-collapse.180186/#post-8437088 ..

"The script above was breaking every time anything reloaded and you'd need to click something inside the project folder for it to sort. So instead i just directly modified UnityEngine.CoreModule.dll using dnSpy (running on windows 11 in parallels)

UnityEditor -> ProjectBrowser -> GetShouldShowFoldersFirst() -> right click -> Edit IL instructions -> replace instructions with "ldc.i4.1", "ret" (meaning 'return true;'). Save, replace the dll. Have windows style sorting forever without any scripts. Works with Unity 2021.3.9f1 for me."