feat(open): add window_picker.picker

Author: alex-courtis

lua/nvim-tree.lua

@@ -621,7 +621,7 @@ local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS
       resize_window = true,
       window_picker = {
         enable = true,
-        custom_function = nil,
+        picker = "default",
         chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890",
         exclude = {
           filetype = { "notify", "packer", "qf", "diff", "fugitive", "fugitiveblame" },
@@ -673,7 +673,6 @@ end
 
 local FIELD_SKIP_VALIDATE = {
   open_win_config = true,
-  custom_function = true,
 }
 
 local FIELD_OVERRIDE_TYPECHECK = {
@@ -682,6 +681,7 @@ local FIELD_OVERRIDE_TYPECHECK = {
   on_attach = { ["function"] = true, string = true },
   sort_by = { ["function"] = true, string = true },
   root_folder_label = { ["function"] = true, string = true },
+  picker = { ["function"] = true, string = true },
 }
 
 local function validate_options(conf)

lua/nvim-tree/actions/node/open-file.lua

@@ -175,8 +175,8 @@ local function get_target_winid(mode, win_ids)
     end
   else
     -- pick a window
-    if M.window_picker.custom_function then
-      target_winid =  M.window_picker.custom_function()
+    if M.window_picker.picker then
+      target_winid =  M.window_picker.picker()
     else
       target_winid = pick_win_id()
     end