feat: add winid parameter for api.tree.open, toggle, find_file

doc/nvim-tree-lua.txt

@@ -1358,6 +1358,8 @@ tree.open({opts})                                  *nvim-tree-api.tree.open()*
     Options: ~
       • {path}           (string)  root directory for the tree
       • {current_window} (boolean) open the tree in the current window
+      • {winid}          (number)  open the tree in the specified |winid|,
+                                   overrides {current_window}
       • {find_file}      (boolean) find the current buffer
       • {update_root}    (boolean) requires {find_file}, see
                                    |nvim-tree.update_focused_file.update_root|
@@ -1371,6 +1373,8 @@ tree.toggle({opts})                              *nvim-tree-api.tree.toggle()*
     Options: ~
       • {path}           (string)  root directory for the tree
       • {current_window} (boolean) open the tree in the current window
+      • {winid}          (number)  open the tree in the specified |winid|,
+                                   overrides {current_window}
       • {find_file}      (boolean) find the current buffer
       • {update_root}    (boolean) requires {find_file}, see
                                    |nvim-tree.update_focused_file.update_root|
@@ -1433,8 +1437,10 @@ tree.find_file({opts})                        *nvim-tree-api.tree.find_file()*
 
     Options: ~
       • {buf}            (string|number)  absolute/relative path OR bufnr to find
-      • {open}           (boolean)        open the tree
+      • {open}           (boolean)        open the tree if necessary
       • {current_window} (boolean)        requires {open}, open in the current window
+      • {winid}          (number)         open the tree in the specified |winid|,
+                                          overrides {current_window}
       • {update_root}    (boolean)        see |nvim-tree.update_focused_file.update_root|
       • {focus}          (boolean)        focus the tree
 

lua/nvim-tree.lua

@@ -96,7 +96,7 @@ function M.open_replacing_current_buffer(cwd)
   if not core.get_explorer() or cwd ~= core.get_cwd() then
     core.init(cwd)
   end
-  view.open_in_current_win { hijack_current_buf = false, resize = false }
+  view.open_in_win { hijack_current_buf = false, resize = false }
   require("nvim-tree.renderer").draw()
   require("nvim-tree.actions.finders.find-file").fn(bufname)
 end

lua/nvim-tree/actions/tree/find-file.lua

@@ -48,7 +48,7 @@ function M.fn(opts)
     end
   elseif opts.open then
     -- open
-    lib.open { current_window = opts.current_window }
+    lib.open { current_window = opts.current_window, winid = opts.winid }
     if not opts.focus then
       vim.cmd "noautocmd wincmd p"
     end

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

@@ -29,7 +29,7 @@ function M.fn(opts)
     view.focus()
   else
     -- open
-    lib.open { path = opts.path, current_window = opts.current_window }
+    lib.open { path = opts.path, current_window = opts.current_window, winid = opts.winid }
   end
 
   -- find file

lua/nvim-tree/actions/tree/toggle.lua

@@ -45,7 +45,7 @@ function M.fn(opts, no_focus, cwd, bang)
     view.close()
   else
     -- open
-    lib.open { path = opts.path, current_window = opts.current_window }
+    lib.open { path = opts.path, current_window = opts.current_window, winid = opts.winid }
 
     -- find file
     if M.config.update_focused_file.enable or opts.find_file then

lua/nvim-tree/api.lua

@@ -36,6 +36,7 @@ end
 ---@class ApiTreeOpenOpts
 ---@field path string|nil path
 ---@field current_window boolean|nil default false
+---@field winid number|nil
 ---@field find_file boolean|nil default false
 ---@field update_root boolean|nil default false
 
@@ -44,6 +45,7 @@ Api.tree.open = wrap(require("nvim-tree.actions.tree.open").fn)
 ---@class ApiTreeToggleOpts
 ---@field path string|nil
 ---@field current_window boolean|nil default false
+---@field winid number|nil
 ---@field find_file boolean|nil default false
 ---@field update_root boolean|nil default false
 ---@field focus boolean|nil default true
@@ -84,6 +86,7 @@ Api.tree.get_nodes = wrap(require("nvim-tree.lib").get_nodes)
 ---@field buf string|number|nil
 ---@field open boolean|nil default false
 ---@field current_window boolean|nil default false
+---@field winid number|nil
 ---@field update_root boolean|nil default false
 ---@field focus boolean|nil default false
 

lua/nvim-tree/lib.lua

@@ -7,6 +7,7 @@ local events = require "nvim-tree.events"
 ---@class LibOpenOpts
 ---@field path string|nil path
 ---@field current_window boolean|nil default false
+---@field winid number|nil
 
 local M = {
   target_winid = nil,
@@ -163,10 +164,13 @@ function M.open(opts)
   end
   if should_hijack_current_buf() then
     view.close_this_tab_only()
-    view.open_in_current_win()
+    view.open_in_win()
+    renderer.draw()
+  elseif opts.winid then
+    view.open_in_win { hijack_current_buf = false, resize = false, winid = opts.winid }
     renderer.draw()
   elseif opts.current_window then
-    view.open_in_current_win { hijack_current_buf = false, resize = false }
+    view.open_in_win { hijack_current_buf = false, resize = false }
     renderer.draw()
   else
     open_view_and_draw()

lua/nvim-tree/view.lua

@@ -1,9 +1,14 @@
-local M = {}
-
 local events = require "nvim-tree.events"
 local utils = require "nvim-tree.utils"
 local log = require "nvim-tree.log"
 
+---@class OpenInWinOpts
+---@field hijack_current_buf boolean|nil default true
+---@field resize boolean|nil default true
+---@field winid number|nil 0 or nil for current
+
+local M = {}
+
 local DEFAULT_MIN_WIDTH = 30
 local DEFAULT_MAX_WIDTH = -1
 local DEFAULT_PADDING = 1
@@ -340,8 +345,13 @@ local function set_current_win()
   M.View.tabpages[current_tab].winnr = vim.api.nvim_get_current_win()
 end
 
-function M.open_in_current_win(opts)
+---Open the tree in the a window
+---@param opts OpenInWinOpts|nil
+function M.open_in_win(opts)
   opts = opts or { hijack_current_buf = true, resize = true }
+  if opts.winid and vim.api.nvim_win_is_valid(opts.winid) then
+    vim.api.nvim_set_current_win(opts.winid)
+  end
   create_buffer(opts.hijack_current_buf and vim.api.nvim_get_current_buf())
   setup_tabpage(vim.api.nvim_get_current_tabpage())
   set_current_win()