refactor(#2826): default lifecycle log off

doc/nvim-tree-lua.txt

@@ -649,6 +649,7 @@ Following is the default configuration. See |nvim-tree-opts| for details. >lua
           dev = false,
           diagnostics = false,
           git = false,
+          lifecycle = false,
           profile = false,
           watcher = false,
         },

lua/nvim-tree.lua

@@ -89,10 +89,10 @@ function M.tab_enter()
         return
       end
     end
-    view.open({ focus_tree = false })
 
     local explorer = core.get_explorer()
     if explorer then
+      explorer.window:open({ focus_tree = false })
       explorer.renderer:draw()
     end
   end
@@ -150,21 +150,6 @@ local function setup_autocommands(opts)
     vim.api.nvim_create_autocmd(name, vim.tbl_extend("force", default_opts, custom_opts))
   end
 
-  -- prevent new opened file from opening in the same window as nvim-tree
-  create_nvim_tree_autocmd("BufWipeout", {
-    pattern = "NvimTree_*",
-    callback = function()
-      if not utils.is_nvim_tree_buf(0) then
-        return
-      end
-      if opts.actions.open_file.eject then
-        view._prevent_buffer_override()
-      else
-        view.abandon_current_window()
-      end
-    end,
-  })
-
   if opts.tab.sync.open then
     create_nvim_tree_autocmd("TabEnter", { callback = vim.schedule_wrap(M.tab_enter) })
   end
@@ -226,17 +211,6 @@ local function setup_autocommands(opts)
     })
   end
 
-  if opts.view.float.enable and opts.view.float.quit_on_focus_loss then
-    create_nvim_tree_autocmd("WinLeave", {
-      pattern = "NvimTree_*",
-      callback = function()
-        if utils.is_nvim_tree_buf(0) then
-          view.close()
-        end
-      end,
-    })
-  end
-
   -- Handles event dispatch when tree is closed by `:q`
   create_nvim_tree_autocmd("WinClosed", {
     pattern = "*",
@@ -524,6 +498,7 @@ local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS
       dev = false,
       diagnostics = false,
       git = false,
+      lifecycle = false,
       profile = false,
       watcher = false,
     },
@@ -692,9 +667,11 @@ local function localise_default_opts()
 end
 
 function M.purge_all_state()
-  view.close_all_tabs()
-  view.abandon_all_windows()
   local explorer = core.get_explorer()
+  if explorer then
+    explorer.window:close_all_tabs()
+  end
+  view.abandon_all_windows()
   if explorer then
     require("nvim-tree.git").purge_state()
     explorer:destroy()
@@ -748,7 +725,6 @@ function M.setup(conf)
   require("nvim-tree.explorer.watch").setup(opts)
   require("nvim-tree.git").setup(opts)
   require("nvim-tree.git.utils").setup(opts)
-  require("nvim-tree.view").setup(opts)
   require("nvim-tree.lib").setup(opts)
   require("nvim-tree.renderer.components").setup(opts)
   require("nvim-tree.buffers").setup(opts)

lua/nvim-tree/actions/fs/clipboard.lua

@@ -31,6 +31,8 @@ local Clipboard = Class:extend()
 ---@protected
 ---@param args ClipboardArgs
 function Clipboard:new(args)
+  args.explorer:log_new("Clipboard")
+
   self.explorer = args.explorer
 
   self.data = {
@@ -42,6 +44,10 @@ function Clipboard:new(args)
   self.reg = self.explorer.opts.actions.use_system_clipboard and "+" or "1"
 end
 
+function Clipboard:destroy()
+  self.explorer:log_destroy("Clipboard")
+end
+
 ---@param source string
 ---@param destination string
 ---@return boolean

lua/nvim-tree/actions/fs/remove-file.lua

@@ -1,7 +1,6 @@
 local core = require("nvim-tree.core")
 local utils = require("nvim-tree.utils")
 local events = require("nvim-tree.events")
-local view = require("nvim-tree.view")
 local lib = require("nvim-tree.lib")
 local notify = require("nvim-tree.notify")
 
@@ -14,10 +13,12 @@ local M = {
 
 ---@param windows integer[]
 local function close_windows(windows)
+  local explorer = core.get_explorer()
+
   -- Prevent from closing when the win count equals 1 or 2,
   -- where the win to remove could be the last opened.
   -- For details see #2503.
-  if view.View.float.enable and #vim.api.nvim_list_wins() < 3 then
+  if explorer and explorer.window.float.enable and #vim.api.nvim_list_wins() < 3 then
     return
   end
 
@@ -30,16 +31,17 @@ end
 
 ---@param absolute_path string
 local function clear_buffer(absolute_path)
+  local explorer = core.get_explorer()
   local bufs = vim.fn.getbufinfo({ bufloaded = 1, buflisted = 1 })
   for _, buf in pairs(bufs) do
     if buf.name == absolute_path then
       local tree_winnr = vim.api.nvim_get_current_win()
-      if buf.hidden == 0 and (#bufs > 1 or view.View.float.enable) then
+      if buf.hidden == 0 and (#bufs > 1 or explorer and explorer.window.float.enable) then
         vim.api.nvim_set_current_win(buf.windows[1])
         vim.cmd(":bn")
       end
       vim.api.nvim_buf_delete(buf.bufnr, { force = true })
-      if not view.View.float.quit_on_focus_loss then
+      if explorer and not explorer.window.float.quit_on_focus_loss then
         vim.api.nvim_set_current_win(tree_winnr)
       end
       if M.config.actions.remove_file.close_window then

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

@@ -2,6 +2,7 @@
 local lib = require("nvim-tree.lib")
 local notify = require("nvim-tree.notify")
 local utils = require("nvim-tree.utils")
+local core = require("nvim-tree.core")
 local view = require("nvim-tree.view")
 
 local M = {}
@@ -187,7 +188,10 @@ end
 
 local function open_file_in_tab(filename)
   if M.quit_on_open then
-    view.close()
+    local explorer = core.get_explorer()
+    if explorer then
+      explorer.window:close()
+    end
   end
   if M.relative_path then
     filename = utils.path_relative(filename, vim.fn.getcwd())
@@ -197,7 +201,10 @@ end
 
 local function drop(filename)
   if M.quit_on_open then
-    view.close()
+    local explorer = core.get_explorer()
+    if explorer then
+      explorer.window:close()
+    end
   end
   if M.relative_path then
     filename = utils.path_relative(filename, vim.fn.getcwd())
@@ -207,7 +214,10 @@ end
 
 local function tab_drop(filename)
   if M.quit_on_open then
-    view.close()
+    local explorer = core.get_explorer()
+    if explorer then
+      explorer.window:close()
+    end
   end
   if M.relative_path then
     filename = utils.path_relative(filename, vim.fn.getcwd())
@@ -228,7 +238,10 @@ local function on_preview(buf_loaded)
       once = true,
     })
   end
-  view.focus()
+  local explorer = core.get_explorer()
+  if explorer then
+    explorer.window:focus()
+  end
 end
 
 local function get_target_winid(mode)
@@ -273,6 +286,8 @@ local function set_current_win_no_autocmd(winid, autocmd)
 end
 
 local function open_in_new_window(filename, mode)
+  local explorer = core.get_explorer()
+
   if type(mode) ~= "string" then
     mode = ""
   end
@@ -295,7 +310,11 @@ local function open_in_new_window(filename, mode)
   end, vim.api.nvim_list_wins())
 
   local create_new_window = #win_ids == 1 -- This implies that the nvim-tree window is the only one
-  local new_window_side = (view.View.side == "right") and "aboveleft" or "belowright"
+
+  local new_window_side = "belowright"
+  if explorer and (explorer.window.side == "right") then
+    new_window_side = "aboveleft"
+  end
 
   -- Target is invalid: create new window
   if not vim.tbl_contains(win_ids, target_winid) then
@@ -327,7 +346,7 @@ local function open_in_new_window(filename, mode)
     end
   end
 
-  if (mode == "preview" or mode == "preview_no_picker") and view.View.float.enable then
+  if (mode == "preview" or mode == "preview_no_picker") and explorer and explorer.window.float.enable then
     -- ignore "WinLeave" autocmd on preview
     -- because the registered "WinLeave"
     -- will kill the floating window immediately
@@ -378,6 +397,8 @@ end
 ---@param filename string
 ---@return nil
 function M.fn(mode, filename)
+  local explorer = core.get_explorer()
+
   if type(mode) ~= "string" then
     mode = ""
   end
@@ -412,16 +433,16 @@ function M.fn(mode, filename)
     vim.bo.bufhidden = ""
   end
 
-  if M.resize_window then
-    view.resize()
+  if M.resize_window and explorer then
+    explorer.window:resize()
   end
 
   if mode == "preview" or mode == "preview_no_picker" then
     return on_preview(buf_loaded)
   end
 
-  if M.quit_on_open then
-    view.close()
+  if M.quit_on_open and explorer then
+    explorer.window:close()
   end
 end
 

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

@@ -41,11 +41,12 @@ function M.fn(opts)
     return
   end
 
-  if view.is_visible() then
+  local explorer = core.get_explorer()
+  if explorer and view.is_visible() then
     -- focus
     if opts.focus then
       lib.set_target_win()
-      view.focus()
+      explorer.window:focus()
     end
   elseif opts.open then
     -- open

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

@@ -1,3 +1,4 @@
+local core = require("nvim-tree.core")
 local lib = require("nvim-tree.lib")
 local view = require("nvim-tree.view")
 local finders_find_file = require("nvim-tree.actions.finders.find-file")
@@ -23,10 +24,12 @@ function M.fn(opts)
     opts.path = nil
   end
 
-  if view.is_visible() then
+  local explorer = core.get_explorer()
+
+  if explorer and view.is_visible() then
     -- focus
     lib.set_target_win()
-    view.focus()
+    explorer.window:focus()
   else
     -- open
     lib.open({

lua/nvim-tree/actions/tree/resize.lua

@@ -1,14 +1,19 @@
-local view = require("nvim-tree.view")
+local core = require("nvim-tree.core")
 
 local M = {}
 
 ---Resize the tree, persisting the new size.
 ---@param opts ApiTreeResizeOpts|nil
 function M.fn(opts)
+  local explorer = core.get_explorer()
+  if not explorer then
+    return
+  end
+
   if opts == nil then
     -- reset to config values
-    view.configure_width()
-    view.resize()
+    explorer.window:configure_width()
+    explorer.window:resize()
     return
   end
 
@@ -16,19 +21,19 @@ function M.fn(opts)
   local width_cfg = options.width
 
   if width_cfg ~= nil then
-    view.configure_width(width_cfg)
-    view.resize()
+    explorer.window:configure_width(width_cfg)
+    explorer.window:resize()
     return
   end
 
-  if not view.is_width_determined() then
+  if not explorer.window:is_width_determined() then
     -- {absolute} and {relative} do nothing when {width} is a function.
     return
   end
 
   local absolute = options.absolute
   if type(absolute) == "number" then
-    view.resize(absolute)
+    explorer.window:resize(absolute)
     return
   end
 
@@ -39,7 +44,7 @@ function M.fn(opts)
       relative_size = "+" .. relative_size
     end
 
-    view.resize(relative_size)
+    explorer.window:resize(relative_size)
     return
   end
 end

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

@@ -1,3 +1,4 @@
+local core = require("nvim-tree.core")
 local lib = require("nvim-tree.lib")
 local view = require("nvim-tree.view")
 local finders_find_file = require("nvim-tree.actions.finders.find-file")
@@ -10,6 +11,8 @@ local M = {}
 ---@param cwd boolean|nil legacy -> opts.path
 ---@param bang boolean|nil legacy -> opts.update_root
 function M.fn(opts, no_focus, cwd, bang)
+  local explorer = core.get_explorer()
+
   -- legacy arguments
   if type(opts) == "boolean" then
     opts = {
@@ -40,9 +43,9 @@ function M.fn(opts, no_focus, cwd, bang)
     opts.path = nil
   end
 
-  if view.is_visible() then
+  if explorer and view.is_visible() then
     -- close
-    view.close()
+    explorer.window:close()
   else
     -- open
     lib.open({

lua/nvim-tree/api.lua

@@ -141,9 +141,9 @@ Api.tree.focus = Api.tree.open
 ---@field focus boolean|nil default true
 
 Api.tree.toggle = wrap(actions.tree.toggle.fn)
-Api.tree.close = wrap(view.close)
-Api.tree.close_in_this_tab = wrap(view.close_this_tab_only)
-Api.tree.close_in_all_tabs = wrap(view.close_all_tabs)
+Api.tree.close = wrap_explorer_member("window", "close")
+Api.tree.close_in_this_tab = wrap_explorer_member("window", "close_this_tab_only")
+Api.tree.close_in_all_tabs = wrap_explorer_member("window", "close_all_tabs")
 Api.tree.reload = wrap_explorer("reload_explorer")
 
 ---@class ApiTreeResizeOpts
@@ -239,13 +239,17 @@ local function edit(mode, node, edit_opts)
   local path = file_link and file_link.link_to or node.absolute_path
   local cur_tabpage = vim.api.nvim_get_current_tabpage()
 
+  local explorer = core.get_explorer()
+
   actions.node.open_file.fn(mode, path)
 
   edit_opts = edit_opts or {}
 
   local mode_unsupported_quit_on_open = mode == "drop" or mode == "tab_drop" or mode == "edit_in_place"
   if not mode_unsupported_quit_on_open and edit_opts.quit_on_open then
-    view.close(cur_tabpage)
+    if explorer then
+      explorer.window:close(cur_tabpage)
+    end
   end
 
   local mode_unsupported_focus = mode == "drop" or mode == "tab_drop" or mode == "edit_in_place"
@@ -255,7 +259,9 @@ local function edit(mode, node, edit_opts)
     if mode == "tabnew" then
       vim.cmd(":tabprev")
     end
-    view.focus()
+    if explorer then
+      explorer.window:focus()
+    end
   end
 end
 

lua/nvim-tree/appearance/init.lua

@@ -134,6 +134,29 @@ M.HIGHLIGHT_GROUPS = {
   { group = "NvimTreeDiagnosticHintFolderHL",  link = "NvimTreeDiagnosticHintFileHL" },
 }
 
+-- winhighlight for most cases
+M.WIN_HL = table.concat({
+  "EndOfBuffer:NvimTreeEndOfBuffer",
+  "CursorLine:NvimTreeCursorLine",
+  "CursorLineNr:NvimTreeCursorLineNr",
+  "LineNr:NvimTreeLineNr",
+  "WinSeparator:NvimTreeWinSeparator",
+  "StatusLine:NvimTreeStatusLine",
+  "StatusLineNC:NvimTreeStatuslineNC",
+  "SignColumn:NvimTreeSignColumn",
+  "Normal:NvimTreeNormal",
+  "NormalNC:NvimTreeNormalNC",
+  "NormalFloat:NvimTreeNormalFloat",
+  "FloatBorder:NvimTreeNormalFloatBorder",
+}, ",")
+
+-- winhighlight for help
+M.WIN_HL_HELP = table.concat({
+  "NormalFloat:NvimTreeNormalFloat",
+  "WinSeparator:NvimTreeWinSeparator",
+  "CursorLine:NvimTreeCursorLine",
+}, ",")
+
 -- nvim-tree highlight groups to legacy
 M.LEGACY_LINKS = {
   NvimTreeModifiedIcon = "NvimTreeModifiedFile",

lua/nvim-tree/commands.lua

@@ -1,5 +1,5 @@
 local api = require("nvim-tree.api")
-local view = require("nvim-tree.view")
+local core = require("nvim-tree.core")
 
 local M = {}
 
@@ -111,7 +111,10 @@ local CMDS = {
       bar = true,
     },
     command = function(c)
-      view.resize(c.args)
+      local explorer = core.get_explorer()
+      if explorer then
+        explorer.window:resize(c.args)
+      end
     end,
   },
   {

lua/nvim-tree/core.lua

@@ -1,6 +1,5 @@
 local events = require("nvim-tree.events")
 local notify = require("nvim-tree.notify")
-local view = require("nvim-tree.view")
 local log = require("nvim-tree.log")
 
 local M = {}
@@ -55,7 +54,7 @@ end
 ---@return integer
 function M.get_nodes_starting_line()
   local offset = 1
-  if view.is_root_folder_visible(M.get_cwd()) then
+  if TreeExplorer and TreeExplorer.window:is_root_folder_visible(M.get_cwd()) then
     offset = offset + 1
   end
   if TreeExplorer and TreeExplorer.live_filter.filter then

lua/nvim-tree/explorer/filters.lua

@@ -23,6 +23,8 @@ local Filters = Class:extend()
 ---@protected
 ---@param args FiltersArgs
 function Filters:new(args)
+  args.explorer:log_new("Filters")
+
   self.explorer        = args.explorer
   self.ignore_list     = {}
   self.exclude_list    = self.explorer.opts.filters.exclude
@@ -50,6 +52,10 @@ function Filters:new(args)
   end
 end
 
+function Filters:destroy()
+  self.explorer:log_destroy("Filters")
+end
+
 ---@private
 ---@param path string
 ---@return boolean

lua/nvim-tree/explorer/init.lua

@@ -20,6 +20,7 @@ local LiveFilter = require("nvim-tree.explorer.live-filter")
 local Sorter = require("nvim-tree.explorer.sorter")
 local Clipboard = require("nvim-tree.actions.fs.clipboard")
 local Renderer = require("nvim-tree.renderer")
+local Window = require("nvim-tree.explorer.window")
 
 local FILTER_REASON = require("nvim-tree.enum").FILTER_REASON
 
@@ -35,6 +36,7 @@ local config
 ---@field sorters Sorter
 ---@field marks Marks
 ---@field clipboard Clipboard
+---@field window Window
 local Explorer = RootNode:extend()
 
 ---@class Explorer
@@ -55,15 +57,18 @@ function Explorer:new(args)
   self.uid_explorer = vim.loop.hrtime()
   self.augroup_id   = vim.api.nvim_create_augroup("NvimTree_Explorer_" .. self.uid_explorer, {})
 
+  self:log_new("Explorer")
+
   self.open        = true
   self.opts        = config
 
-  self.sorters      = Sorter({ explorer = self })
-  self.renderer     = Renderer({ explorer = self })
+  self.clipboard   = Clipboard({ explorer = self })
   self.filters     = Filters({ explorer = self })
   self.live_filter = LiveFilter({ explorer = self })
   self.marks       = Marks({ explorer = self })
-  self.clipboard    = Clipboard({ explorer = self })
+  self.renderer    = Renderer({ explorer = self })
+  self.sorters     = Sorter({ explorer = self })
+  self.window      = Window({ explorer = self })
 
   self:create_autocmds()
 
@@ -71,7 +76,15 @@ function Explorer:new(args)
 end
 
 function Explorer:destroy()
-  log.line("dev", "Explorer:destroy")
+  self.explorer:log_destroy("Explorer")
+
+  self.clipboard:destroy()
+  self.filters:destroy()
+  self.live_filter:destroy()
+  self.marks:destroy()
+  self.renderer:destroy()
+  self.sorters:destroy()
+  self.window:destroy()
 
   vim.api.nvim_del_augroup_by_id(self.augroup_id)
 
@@ -84,11 +97,23 @@ function Explorer:create_autocmds()
     group = self.augroup_id,
     callback = function()
       appearance.setup()
-      view.reset_winhl()
+      self.window:reset_winhl()
       self.renderer:draw()
     end,
   })
 
+  if self.opts.view.float.enable and self.opts.view.float.quit_on_focus_loss then
+    vim.api.nvim_create_autocmd("WinLeave", {
+      group = self.augroup_id,
+      pattern = "NvimTree_*",
+      callback = function()
+        if utils.is_nvim_tree_buf(0) then
+          self.window:close()
+        end
+      end,
+    })
+  end
+
   vim.api.nvim_create_autocmd("BufWritePost", {
     group = self.augroup_id,
     callback = function()
@@ -141,6 +166,22 @@ function Explorer:create_autocmds()
     end,
   })
 
+  -- prevent new opened file from opening in the same window as nvim-tree
+  vim.api.nvim_create_autocmd("BufWipeout", {
+    group = self.augroup_id,
+    pattern = "NvimTree_*",
+    callback = function()
+      if not utils.is_nvim_tree_buf(0) then
+        return
+      end
+      if self.opts.actions.open_file.eject then
+        self.window:prevent_buffer_override()
+      else
+        view.abandon_current_window()
+      end
+    end,
+  })
+
   vim.api.nvim_create_autocmd("BufEnter", {
     group = self.augroup_id,
     pattern = "NvimTree_*",
@@ -523,7 +564,7 @@ function Explorer:get_node_at_cursor()
     return
   end
 
-  if cursor[1] == 1 and view.is_root_folder_visible(core.get_cwd()) then
+  if cursor[1] == 1 and self.window:is_root_folder_visible(core.get_cwd()) then
     return self
   end
 
@@ -557,6 +598,18 @@ function Explorer:get_nodes()
   return self:clone()
 end
 
+---Log a lifecycle message with uid_explorer and absolute_path
+---@param msg string?
+function Explorer:log_new(msg)
+  log.line("lifecycle", "+ %-15s %d %s", msg, self.uid_explorer, self.absolute_path)
+end
+
+---Log a lifecycle message with uid_explorer and absolute_path
+---@param msg string?
+function Explorer:log_destroy(msg)
+  log.line("lifecycle", "- %-15s %d %s", msg, self.uid_explorer, self.absolute_path)
+end
+
 function Explorer:setup(opts)
   config = opts
 end

lua/nvim-tree/explorer/live-filter.lua

@@ -21,12 +21,18 @@ local LiveFilter = Class:extend()
 ---@protected
 ---@param args LiveFilterArgs
 function LiveFilter:new(args)
+  args.explorer:log_new("LiveFilter")
+
   self.explorer = args.explorer
   self.prefix = self.explorer.opts.live_filter.prefix
   self.always_show_folders = self.explorer.opts.live_filter.always_show_folders
   self.filter = nil
 end
 
+function LiveFilter:destroy()
+  self.explorer:log_destroy("LiveFilter")
+end
+
 ---@param node_ Node?
 local function reset_filter(self, node_)
   node_ = node_ or self.explorer
@@ -56,14 +62,14 @@ local overlay_bufnr = 0
 local overlay_winnr = 0
 
 local function remove_overlay(self)
-  if view.View.float.enable and view.View.float.quit_on_focus_loss then
+  if self.explorer.view.float.enable and self.explorer.view.float.quit_on_focus_loss then
     -- return to normal nvim-tree float behaviour when filter window is closed
     vim.api.nvim_create_autocmd("WinLeave", {
       pattern = "NvimTree_*",
       group = vim.api.nvim_create_augroup("NvimTree", { clear = false }),
       callback = function()
         if utils.is_nvim_tree_buf(0) then
-          view.close()
+          self.explorer.view:close()
         end
       end,
     })
@@ -156,7 +162,7 @@ end
 
 ---@return integer
 local function calculate_overlay_win_width(self)
-  local wininfo = vim.fn.getwininfo(view.get_winnr())[1]
+  local wininfo = vim.fn.getwininfo(self.explorer.view:get_winnr())[1]
 
   if wininfo then
     return wininfo.width - wininfo.textoff - #self.prefix
@@ -166,7 +172,7 @@ local function calculate_overlay_win_width(self)
 end
 
 local function create_overlay(self)
-  if view.View.float.enable then
+  if self.explorer.view.float.enable then
     -- don't close nvim-tree float when focus is changed to filter window
     vim.api.nvim_clear_autocmds({
       event   = "WinLeave",
@@ -198,7 +204,7 @@ local function create_overlay(self)
 end
 
 function LiveFilter:start_filtering()
-  view.View.live_filter.prev_focused_node = self.explorer:get_node_at_cursor()
+  self.explorer.window.live_filter.prev_focused_node = self.explorer:get_node_at_cursor()
   self.filter = self.filter or ""
 
   self.explorer.renderer:draw()
@@ -213,7 +219,7 @@ end
 
 function LiveFilter:clear_filter()
   local node = self.explorer:get_node_at_cursor()
-  local last_node = view.View.live_filter.prev_focused_node
+  local last_node = self.explorer.window.live_filter.prev_focused_node
 
   self.filter = nil
   reset_filter(self)

lua/nvim-tree/explorer/sorter.lua

@@ -19,9 +19,15 @@ local Sorter = Class:extend()
 ---@protected
 ---@param args SorterArgs
 function Sorter:new(args)
+  args.explorer:log_new("Sorter")
+
   self.explorer = args.explorer
 end
 
+function Sorter:destroy()
+  self.explorer:log_destroy("Sorter")
+end
+
 ---Create a shallow copy of a portion of a list.
 ---@param t table
 ---@param first integer First index, inclusive

lua/nvim-tree/explorer/window.lua

@@ -0,0 +1,504 @@
+local appearance = require("nvim-tree.appearance")
+local events = require("nvim-tree.events")
+local utils = require("nvim-tree.utils")
+local log = require("nvim-tree.log")
+local notify = require("nvim-tree.notify")
+local view = require("nvim-tree.view")
+
+local Class = require("nvim-tree.classic")
+
+---@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 DEFAULT_MIN_WIDTH = 30
+local DEFAULT_MAX_WIDTH = -1
+local DEFAULT_PADDING = 1
+
+---@class (exact) Window: Class
+---@field live_filter table
+---@field side string
+---@field float table
+---@field private explorer Explorer
+---@field private adaptive_size boolean
+---@field private centralize_selection boolean
+---@field private hide_root_folder boolean
+---@field private winopts table
+---@field private height integer
+---@field private preserve_window_proportions boolean
+---@field private initial_width integer
+---@field private width (fun():integer)|integer|string
+---@field private max_width integer
+---@field private padding integer
+local Window = Class:extend()
+
+---@class Window
+---@overload fun(args: WindowArgs): Window
+
+---@class (exact) WindowArgs
+---@field explorer Explorer
+
+---@protected
+---@param args WindowArgs
+function Window:new(args)
+  args.explorer:log_new("Window")
+
+  self.explorer                    = args.explorer
+  self.adaptive_size               = false
+  self.centralize_selection        = self.explorer.opts.view.centralize_selection
+  self.float                       = self.explorer.opts.view.float
+  self.height                      = self.explorer.opts.view.height
+  self.hide_root_folder            = self.explorer.opts.renderer.root_folder_label == false
+  self.preserve_window_proportions = self.explorer.opts.view.preserve_window_proportions
+  self.side                        = (self.explorer.opts.view.side == "right") and "right" or "left"
+  self.live_filter                 = { prev_focused_node = nil, }
+
+  self.winopts                     = {
+    relativenumber = self.explorer.opts.view.relativenumber,
+    number         = self.explorer.opts.view.number,
+    list           = false,
+    foldenable     = false,
+    winfixwidth    = true,
+    winfixheight   = true,
+    spell          = false,
+    signcolumn     = self.explorer.opts.view.signcolumn,
+    foldmethod     = "manual",
+    foldcolumn     = "0",
+    cursorcolumn   = false,
+    cursorline     = self.explorer.opts.view.cursorline,
+    cursorlineopt  = "both",
+    colorcolumn    = "0",
+    wrap           = false,
+    winhl          = appearance.WIN_HL,
+  }
+
+  self:configure_width(self.explorer.opts.view.width)
+  self.initial_width = self:get_width()
+end
+
+function Window:destroy()
+  self.explorer:log_destroy("Window")
+end
+
+---@type { name: string, value: any }[]
+local BUFFER_OPTIONS = {
+  { name = "bufhidden",  value = "wipe" },
+  { name = "buflisted",  value = false },
+  { name = "buftype",    value = "nofile" },
+  { name = "filetype",   value = "NvimTree" },
+  { name = "modifiable", value = false },
+  { name = "swapfile",   value = false },
+}
+
+---@private
+---@param bufnr integer|false|nil
+function Window:create_buffer(bufnr)
+  view.wipe_rogue_buffer()
+
+  local tab = view.create_buffer(bufnr)
+
+  vim.api.nvim_buf_set_name(view.get_bufnr(), "NvimTree_" .. tab)
+
+  bufnr = view.get_bufnr()
+  for _, option in ipairs(BUFFER_OPTIONS) do
+    vim.api.nvim_set_option_value(option.name, option.value, { buf = bufnr })
+  end
+
+  require("nvim-tree.keymap").on_attach(view.get_bufnr())
+
+  events._dispatch_tree_attached_post(view.get_bufnr())
+end
+
+---@private
+---@param size (fun():integer)|integer|string
+---@return integer
+function Window:get_size(size)
+  if type(size) == "number" then
+    return size
+  elseif type(size) == "function" then
+    return self:get_size(size())
+  end
+  local size_as_number = tonumber(size:sub(0, -2))
+  local percent_as_decimal = size_as_number / 100
+  return math.floor(vim.o.columns * percent_as_decimal)
+end
+
+---@private
+---@param size (fun():integer)|integer|nil
+---@return integer
+function Window:get_width(size)
+  if size then
+    return self:get_size(size)
+  else
+    return self:get_size(self.width)
+  end
+end
+
+---@private
+function Window:set_window_options_and_buffer()
+  pcall(vim.api.nvim_command, "buffer " .. view.get_bufnr())
+
+  if vim.fn.has("nvim-0.10") == 1 then
+    local eventignore = vim.api.nvim_get_option_value("eventignore", {})
+    vim.api.nvim_set_option_value("eventignore", "all", {})
+
+    for k, v in pairs(self.winopts) do
+      vim.api.nvim_set_option_value(k, v, { scope = "local" })
+    end
+
+    vim.api.nvim_set_option_value("eventignore", eventignore, {})
+  else
+    local eventignore = vim.api.nvim_get_option("eventignore") ---@diagnostic disable-line: deprecated
+    vim.api.nvim_set_option("eventignore", "all") ---@diagnostic disable-line: deprecated
+
+    -- #3009 vim.api.nvim_win_set_option does not set local scope without explicit winid.
+    -- Revert to opt_local instead of propagating it through for just the 0.10 path.
+    for k, v in pairs(self.winopts) do
+      vim.opt_local[k] = v
+    end
+
+    vim.api.nvim_set_option("eventignore", eventignore) ---@diagnostic disable-line: deprecated
+  end
+end
+
+---@private
+---@return table
+function Window:open_win_config()
+  if type(self.float.open_win_config) == "function" then
+    return self.float.open_win_config()
+  else
+    return self.float.open_win_config
+  end
+end
+
+---@private
+function Window:open_window()
+  if self.float.enable then
+    vim.api.nvim_open_win(0, true, self:open_win_config())
+  else
+    vim.api.nvim_command("vsp")
+    self:reposition_window()
+  end
+  view.setup_tabpage(vim.api.nvim_get_current_tabpage())
+  self:set_window_options_and_buffer()
+end
+
+---@param buf integer
+---@return boolean
+local function is_buf_displayed(buf)
+  return vim.api.nvim_buf_is_valid(buf) and vim.fn.buflisted(buf) == 1
+end
+
+---@return number|nil
+local function get_alt_or_next_buf()
+  local alt_buf = vim.fn.bufnr("#")
+  if is_buf_displayed(alt_buf) then
+    return alt_buf
+  end
+
+  for _, buf in ipairs(vim.api.nvim_list_bufs()) do
+    if is_buf_displayed(buf) then
+      return buf
+    end
+  end
+end
+
+local function switch_buf_if_last_buf()
+  if #vim.api.nvim_list_wins() == 1 then
+    local buf = get_alt_or_next_buf()
+    if buf then
+      vim.cmd("sb" .. buf)
+    else
+      vim.cmd("new")
+    end
+  end
+end
+
+---@param tabpage integer
+local function close(tabpage)
+  if not view.is_visible({ tabpage = tabpage }) then
+    return
+  end
+  view.save_tab_state(tabpage)
+  switch_buf_if_last_buf()
+  local tree_win = view.get_winnr(tabpage)
+  local current_win = vim.api.nvim_get_current_win()
+  for _, win in pairs(vim.api.nvim_tabpage_list_wins(tabpage)) do
+    if vim.api.nvim_win_get_config(win).relative == "" then
+      local prev_win = vim.fn.winnr("#") -- this tab only
+      if tree_win == current_win and prev_win > 0 then
+        vim.api.nvim_set_current_win(vim.fn.win_getid(prev_win))
+      end
+      if vim.api.nvim_win_is_valid(tree_win or 0) then
+        local success, error = pcall(vim.api.nvim_win_close, tree_win or 0, true)
+        if not success then
+          notify.debug("Failed to close window: " .. error)
+          return
+        end
+      end
+      return
+    end
+  end
+end
+
+function Window:close_this_tab_only()
+  close(vim.api.nvim_get_current_tabpage())
+end
+
+function Window:close_all_tabs()
+  view.all_tabs_callback(function(t)
+    close(t)
+  end)
+end
+
+---@param tabpage integer|nil
+function Window:close(tabpage)
+  if self.explorer.opts.tab.sync.close then
+    self:close_all_tabs()
+  elseif tabpage then
+    close(tabpage)
+  else
+    self:close_this_tab_only()
+  end
+end
+
+---@param options table|nil
+function Window:open(options)
+  if view.is_visible() then
+    return
+  end
+
+  local profile = log.profile_start("view open")
+
+  events._dispatch_on_tree_pre_open()
+  self:create_buffer()
+  self:open_window()
+  self:resize()
+
+  local opts = options or { focus_tree = true }
+  if not opts.focus_tree then
+    vim.cmd("wincmd p")
+  end
+  events._dispatch_on_tree_open()
+
+  log.profile_end(profile)
+end
+
+---@private
+function Window:grow()
+  local starts_at = self:is_root_folder_visible(require("nvim-tree.core").get_cwd()) and 1 or 0
+  local lines = vim.api.nvim_buf_get_lines(view.get_bufnr(), starts_at, -1, false)
+  -- number of columns of right-padding to indicate end of path
+  local padding = self:get_size(self.padding)
+
+  -- account for sign/number columns etc.
+  local wininfo = vim.fn.getwininfo(view.get_winnr())
+  if type(wininfo) == "table" and type(wininfo[1]) == "table" then
+    padding = padding + wininfo[1].textoff
+  end
+
+  local resizing_width = self.initial_width - padding
+  local max_width
+
+  -- maybe bound max
+  if self.max_width == -1 then
+    max_width = -1
+  else
+    max_width = self:get_width(self.max_width) - padding
+  end
+
+  local ns_id = vim.api.nvim_get_namespaces()["NvimTreeExtmarks"]
+  for line_nr, l in pairs(lines) do
+    local count = vim.fn.strchars(l)
+    -- also add space for right-aligned icons
+    local extmarks = vim.api.nvim_buf_get_extmarks(view.get_bufnr(), ns_id, { line_nr, 0 }, { line_nr, -1 }, { details = true })
+    count = count + utils.extmarks_length(extmarks)
+    if resizing_width < count then
+      resizing_width = count
+    end
+    if self.adaptive_size and max_width >= 0 and resizing_width >= max_width then
+      resizing_width = max_width
+      break
+    end
+  end
+  self:resize(resizing_width + padding)
+end
+
+function Window:grow_from_content()
+  if self.adaptive_size then
+    self:grow()
+  end
+end
+
+---@param size string|number|nil
+function Window:resize(size)
+  if self.float.enable and not self.adaptive_size then
+    -- if the floating windows's adaptive size is not desired, then the
+    -- float size should be defined in view.float.open_win_config
+    return
+  end
+
+  if type(size) == "string" then
+    size = vim.trim(size)
+    local first_char = size:sub(1, 1)
+    size = tonumber(size)
+
+    if first_char == "+" or first_char == "-" then
+      size = self.width + size
+    end
+  end
+
+  if type(size) == "number" and size <= 0 then
+    return
+  end
+
+  if size then
+    self.width = size
+    self.height = size
+  end
+
+  if not view.is_visible() then
+    return
+  end
+
+  local winnr = view.get_winnr() or 0
+
+  local new_size = self:get_width()
+
+  if new_size ~= vim.api.nvim_win_get_width(winnr) then
+    vim.api.nvim_win_set_width(winnr, new_size)
+    if not self.preserve_window_proportions then
+      vim.cmd(":wincmd =")
+    end
+  end
+
+  events._dispatch_on_tree_resize(new_size)
+end
+
+---@private
+function Window:reposition_window()
+  vim.api.nvim_command("wincmd " .. (self.side == "left" and "H" or "L"))
+  self:resize()
+end
+
+---Open the tree in the a window
+---@param opts OpenInWinOpts|nil
+function Window:open_in_win(opts)
+  opts = opts or { hijack_current_buf = true, resize = true }
+  events._dispatch_on_tree_pre_open()
+  if opts.winid and vim.api.nvim_win_is_valid(opts.winid) then
+    vim.api.nvim_set_current_win(opts.winid)
+  end
+  self:create_buffer(opts.hijack_current_buf and vim.api.nvim_get_current_buf())
+  view.setup_tabpage(vim.api.nvim_get_current_tabpage())
+  view.set_current_win()
+  self:set_window_options_and_buffer()
+  if opts.resize then
+    self:reposition_window()
+    self:resize()
+  end
+  events._dispatch_on_tree_open()
+end
+
+---@param winnr number|nil
+---@param open_if_closed boolean|nil
+function Window:focus(winnr, open_if_closed)
+  local wnr = winnr or view.get_winnr()
+
+  if vim.api.nvim_win_get_tabpage(wnr or 0) ~= vim.api.nvim_win_get_tabpage(0) then
+    self:close()
+    self:open()
+    wnr = view.get_winnr()
+  elseif open_if_closed and not view.is_visible() then
+    self:open()
+  end
+
+  if wnr then
+    vim.api.nvim_set_current_win(wnr)
+  end
+end
+
+function Window:prevent_buffer_override()
+  local view_winnr = view.get_winnr()
+  local view_bufnr = view.get_bufnr()
+
+  -- need to schedule to let the new buffer populate the window
+  -- because this event needs to be run on bufWipeout.
+  -- Otherwise the curwin/curbuf would match the view buffer and the view window.
+  vim.schedule(function()
+    local curwin = vim.api.nvim_get_current_win()
+    local curwinconfig = vim.api.nvim_win_get_config(curwin)
+    local curbuf = vim.api.nvim_win_get_buf(curwin)
+    local bufname = vim.api.nvim_buf_get_name(curbuf)
+
+    if not bufname:match("NvimTree") then
+      view.clear_tabpage(view_winnr)
+    end
+    if curwin ~= view_winnr or bufname == "" or curbuf == view_bufnr then
+      return
+    end
+
+    -- patch to avoid the overriding window to be fixed in size
+    -- might need a better patch
+    vim.cmd("setlocal nowinfixwidth")
+    vim.cmd("setlocal nowinfixheight")
+    self:open({ focus_tree = false })
+
+    self.explorer.renderer:draw()
+
+    pcall(vim.api.nvim_win_close, curwin, { force = true })
+
+    -- to handle opening a file using :e when nvim-tree is on floating mode
+    -- falling back to the current window instead of creating a new one
+    if curwinconfig.relative ~= "" then
+      require("nvim-tree.actions.node.open-file").fn("edit_in_place", bufname)
+    else
+      require("nvim-tree.actions.node.open-file").fn("edit", bufname)
+    end
+  end)
+end
+
+---@param cwd string|nil
+---@return boolean
+function Window:is_root_folder_visible(cwd)
+  return cwd ~= "/" and not self.hide_root_folder
+end
+
+-- used on ColorScheme event
+function Window:reset_winhl()
+  local winnr = view.get_winnr()
+  if winnr and vim.api.nvim_win_is_valid(winnr) then
+    vim.wo[view.get_winnr()].winhl = appearance.WIN_HL
+  end
+end
+
+---Check if width determined or calculated on-fly
+---@return boolean
+function Window:is_width_determined()
+  return type(self.width) ~= "function"
+end
+
+---Configure width-related config
+---@param width string|function|number|table|nil
+function Window:configure_width(width)
+  if type(width) == "table" then
+    self.adaptive_size = true
+    self.width = width.min or DEFAULT_MIN_WIDTH
+    self.max_width = width.max or DEFAULT_MAX_WIDTH
+    self.padding = width.padding or DEFAULT_PADDING
+  elseif width == nil then
+    if self.explorer.opts.view.width ~= nil then
+      -- if we had input config - fallback to it
+      self:configure_width(self.explorer.opts.view.width)
+    else
+      -- otherwise - restore initial width
+      self.width = self.initial_width
+    end
+  else
+    self.adaptive_size = false
+    self.width = width
+  end
+end
+
+return Window

lua/nvim-tree/help.lua

@@ -1,3 +1,4 @@
+local appearance = require("nvim-tree.appearance")
 local keymap = require("nvim-tree.keymap")
 local api = {} -- circular dependency
 
@@ -5,12 +6,6 @@ local PAT_MOUSE = "^<.*Mouse"
 local PAT_CTRL = "^<C%-"
 local PAT_SPECIAL = "^<.+"
 
-local WIN_HL = table.concat({
-  "NormalFloat:NvimTreeNormalFloat",
-  "WinSeparator:NvimTreeWinSeparator",
-  "CursorLine:NvimTreeCursorLine",
-}, ",")
-
 local namespace_help_id = vim.api.nvim_create_namespace("NvimTreeHelp")
 
 local M = {
@@ -210,7 +205,7 @@ local function open()
   })
 
   -- style it a bit like the tree
-  vim.wo[M.winnr].winhl = WIN_HL
+  vim.wo[M.winnr].winhl = appearance.WIN_HL_HELP
   vim.wo[M.winnr].cursorline = M.config.cursorline
 
   local function toggle_sort()

lua/nvim-tree/iterators/node-iterator.lua

@@ -48,7 +48,7 @@ function NodeIterator:recursor(f)
 end
 
 ---@return Node|nil
----@return number|nil
+---@return number
 function NodeIterator:iterate()
   local iteration_count = 0
   local function iter(nodes)

lua/nvim-tree/lib.lua

@@ -30,11 +30,16 @@ local function handle_buf_cwd(cwd)
 end
 
 local function open_view_and_draw()
+  local explorer = core.get_explorer()
+
   local cwd = vim.fn.getcwd()
-  view.open()
+
+  if explorer then
+    explorer.window:open()
+  end
+
   handle_buf_cwd(cwd)
 
-  local explorer = core.get_explorer()
   if explorer then
     explorer.renderer:draw()
   end
@@ -110,19 +115,19 @@ function M.open(opts)
   local explorer = core.get_explorer()
 
   if should_hijack_current_buf() then
-    view.close_this_tab_only()
-    view.open_in_win()
     if explorer then
+      explorer.window:close_this_tab_only()
+      explorer.window:open_in_win()
       explorer.renderer:draw()
     end
   elseif opts.winid then
-    view.open_in_win({ hijack_current_buf = false, resize = false, winid = opts.winid })
     if explorer then
+      explorer.window:open_in_win({ hijack_current_buf = false, resize = false, winid = opts.winid })
       explorer.renderer:draw()
     end
   elseif opts.current_window then
-    view.open_in_win({ hijack_current_buf = false, resize = false })
     if explorer then
+      explorer.window:open_in_win({ hijack_current_buf = false, resize = false })
       explorer.renderer:draw()
     end
   else

lua/nvim-tree/log.lua

@@ -1,4 +1,4 @@
----@alias LogTypes "all" | "config" | "copy_paste" | "dev" | "diagnostics" | "git" | "profile" | "watcher"
+---@alias LogTypes "all" | "config" | "copy_paste" | "dev" | "diagnostics" | "git" | "lifecycle" | "profile" | "watcher"
 
 ---@type table<LogTypes, boolean>
 local types = {}

lua/nvim-tree/marks/init.lua

@@ -25,11 +25,17 @@ local Marks = Class:extend()
 ---@protected
 ---@param args MarksArgs
 function Marks:new(args)
+  args.explorer:log_new("Marks")
+
   self.explorer = args.explorer
 
   self.marks = {}
 end
 
+function Marks:destroy()
+  self.explorer:log_destroy("Marks")
+end
+
 ---Clear all marks and reload if watchers disabled
 ---@private
 function Marks:clear_reload()

lua/nvim-tree/renderer/builder.lua

@@ -1,6 +1,5 @@
 local notify = require("nvim-tree.notify")
 local utils = require("nvim-tree.utils")
-local view = require("nvim-tree.view")
 
 local Class = require("nvim-tree.classic")
 
@@ -379,7 +378,7 @@ end
 
 ---@private
 function Builder:build_header()
-  if view.is_root_folder_visible(self.explorer.absolute_path) then
+  if self.explorer.window:is_root_folder_visible(self.explorer.absolute_path) then
     local root_name = self:format_root_name(self.explorer.opts.renderer.root_folder_label)
     table.insert(self.lines, root_name)
     self:insert_highlight({ "NvimTreeRootFolder" }, 0, string.len(root_name))

lua/nvim-tree/renderer/components/full-name.lua

@@ -1,7 +1,7 @@
-local M = {}
-
+local appearance = require("nvim-tree.appearance")
 local utils = require("nvim-tree.utils")
-local view = require("nvim-tree.view")
+
+local M = {}
 
 local function hide(win)
   if win then
@@ -72,7 +72,7 @@ local function show(opts)
     style     = "minimal",
     border    = "none"
   })
-  vim.wo[M.popup_win].winhl = view.View.winopts.winhl
+  vim.wo[M.popup_win].winhl = appearance.WIN_HL
 
   local ns_id = vim.api.nvim_get_namespaces()["NvimTreeHighlights"]
   local extmarks = vim.api.nvim_buf_get_extmarks(0, ns_id, { line_nr - 1, 0 }, { line_nr - 1, -1 }, { details = true })

lua/nvim-tree/renderer/init.lua

@@ -26,9 +26,15 @@ local Renderer = Class:extend()
 ---@protected
 ---@param args RendererArgs
 function Renderer:new(args)
+  args.explorer:log_new("Renderer")
+
   self.explorer = args.explorer
 end
 
+function Renderer:destroy()
+  self.explorer:log_destroy("Renderer")
+end
+
 ---@private
 ---@param bufnr number
 ---@param lines string[]
@@ -113,7 +119,7 @@ function Renderer:draw()
     vim.api.nvim_win_set_cursor(view.get_winnr() or 0, cursor)
   end
 
-  view.grow_from_content()
+  self.explorer.window:grow_from_content()
 
   log.profile_end(profile)
 

lua/nvim-tree/utils.lua

@@ -143,10 +143,16 @@ function M.find_node(nodes, fn)
       return node.group_next and { node.group_next } or (node.open and #node.nodes > 0 and node.nodes)
     end)
     :iterate()
-  i = require("nvim-tree.view").is_root_folder_visible() and i or i - 1
-  if node and node.explorer.live_filter.filter then
+
+  if node then
+    if not node.explorer.window:is_root_folder_visible() then
+      i = i - 1
+    end
+    if node.explorer.live_filter.filter then
       i = i + 1
     end
+  end
+
   return node, i
 end
 
@@ -652,32 +658,29 @@ function M.is_executable(absolute_path)
   end
 end
 
----List of all option info/values
----@param opts vim.api.keyset.option passed directly to vim.api.nvim_get_option_info2 and vim.api.nvim_get_option_value
----@param was_set boolean filter was_set
----@return { info: vim.api.keyset.get_option_info, val: any }[]
-function M.enumerate_options(opts, was_set)
-  local res = {}
+---@class UtilEnumerateOptionsOpts
+---@field keyset_opts vim.api.keyset.option
+---@field was_set boolean? as per vim.api.keyset.get_option_info
 
-  local infos = vim.tbl_filter(function(info)
-    if opts.buf and info.scope ~= "buf" then
-      return false
-    elseif opts.win and info.scope ~= "win" then
-      return false
+---Option name/values
+---@param opts UtilEnumerateOptionsOpts
+---@return table<string, any>
+function M.enumerate_options(opts)
+  -- enumerate all options, limiting buf and win scopes
+  return vim.tbl_map(function(info)
+    if opts.keyset_opts.buf and info.scope ~= "buf" then
+      return nil
+    elseif opts.keyset_opts.win and info.scope ~= "win" then
+      return nil
     else
-      return true
+      -- optional, lazy was_set check
+      if not opts.was_set or vim.api.nvim_get_option_info2(info.name, opts.keyset_opts).was_set then
+        return vim.api.nvim_get_option_value(info.name, opts.keyset_opts)
+      else
+        return nil
+      end
     end
   end, vim.api.nvim_get_all_options_info())
-
-  for _, info in vim.spairs(infos) do
-    local _, info2 = pcall(vim.api.nvim_get_option_info2, info.name, opts)
-    if not was_set or info2.was_set then
-      local val = pcall(vim.api.nvim_get_option_value, info.name, opts)
-      table.insert(res, { info = info2, val = val })
-    end
-  end
-
-  return res
 end
 
 return M

lua/nvim-tree/view.lua

@@ -1,60 +1,107 @@
-local events = require("nvim-tree.events")
 local utils = require("nvim-tree.utils")
-local log = require("nvim-tree.log")
-local notify = require("nvim-tree.notify")
-
----@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
+local BUFNR_PER_TAB = {}
+local CURSORS = {}
+local TABPAGES = {}
 
-M.View = {
-  adaptive_size        = false,
-  centralize_selection = false,
-  tabpages             = {},
-  cursors              = {},
-  hide_root_folder     = false,
-  live_filter          = {
-    prev_focused_node = nil,
-  },
-  winopts              = {
-    relativenumber = false,
-    number         = false,
-    list           = false,
-    foldenable     = false,
-    winfixwidth    = true,
-    winfixheight   = true,
-    spell          = false,
-    signcolumn     = "yes",
-    foldmethod     = "manual",
-    foldcolumn     = "0",
-    cursorcolumn   = false,
-    cursorline     = true,
-    cursorlineopt  = "both",
-    colorcolumn    = "0",
-    wrap           = false,
-    winhl          = table.concat({
-      "EndOfBuffer:NvimTreeEndOfBuffer",
-      "CursorLine:NvimTreeCursorLine",
-      "CursorLineNr:NvimTreeCursorLineNr",
-      "LineNr:NvimTreeLineNr",
-      "WinSeparator:NvimTreeWinSeparator",
-      "StatusLine:NvimTreeStatusLine",
-      "StatusLineNC:NvimTreeStatuslineNC",
-      "SignColumn:NvimTreeSignColumn",
-      "Normal:NvimTreeNormal",
-      "NormalNC:NvimTreeNormalNC",
-      "NormalFloat:NvimTreeNormalFloat",
-      "FloatBorder:NvimTreeNormalFloatBorder",
-    }, ","),
-  },
-}
+--- Debugging only.
+--- Tabs show TABPAGES winnr and BUFNR_PER_TAB bufnr for the tab.
+--- Orphans for inexistent tab_ids are shown at the right.
+--- lib.target_winid is always shown at the right next to a close button.
+--- Enable with:
+---   vim.opt.tabline = "%!v:lua.require('nvim-tree.view').tab_line()"
+---   vim.opt.showtabline = 2
+function M.tab_line()
+  local tab_ids = vim.api.nvim_list_tabpages()
+  local cur_tab_id = vim.api.nvim_get_current_tabpage()
+
+  local bufnr_per_tab = vim.deepcopy(BUFNR_PER_TAB)
+  local tabpages = vim.deepcopy(TABPAGES)
+
+  local tl = "%#TabLine#"
+
+  for i, tab_id in ipairs(tab_ids) do
+    -- click to select
+    tl = tl .. "%" .. i .. "T"
+
+    -- style
+    if tab_id == cur_tab_id then
+      tl = tl .. "%#StatusLine#|"
+    else
+      tl = tl .. "|%#TabLine#"
+    end
+
+    -- tab_id itself
+    tl = tl .. " t" .. tab_id
+
+    -- winnr, if present
+    local tp = TABPAGES[tab_id]
+    if tp then
+      tl = tl .. " w" .. tp.winnr
+    else
+      tl = tl .. "      "
+    end
+
+    -- bufnr, if present
+    local bpt = BUFNR_PER_TAB[tab_id]
+    if bpt then
+      tl = tl .. " b" .. bpt
+    else
+      tl = tl .. "   "
+    end
+
+    tl = tl .. " "
+
+    -- remove actively mapped
+    bufnr_per_tab[tab_id] = nil
+    tabpages[tab_id] = nil
+  end
+
+  -- close last and reset
+  tl = tl .. "|%#CursorLine#%T"
+
+  -- collect orphans
+  local orphans = {}
+  for tab_id, bufnr in pairs(bufnr_per_tab) do
+    orphans[tab_id] = orphans[tab_id] or {}
+    orphans[tab_id].bufnr = bufnr
+  end
+  for tab_id, tp in pairs(tabpages) do
+    orphans[tab_id] = orphans[tab_id] or {}
+    orphans[tab_id].winnr = tp.winnr
+  end
+
+  -- right-align
+  tl = tl .. "%=%#TabLine#"
+
+  -- print orphans
+  for tab_id, orphan in pairs(orphans) do
+    -- inexistent tab
+    tl = tl .. "%#error#| t" .. tab_id
+
+    -- maybe winnr
+    if orphan.winnr then
+      tl = tl .. " w" .. orphan.winnr
+    else
+      tl = tl .. "      "
+    end
+
+    -- maybe bufnr
+    if orphan.bufnr then
+      tl = tl .. " b" .. orphan.bufnr
+    else
+      tl = tl .. "   "
+    end
+    tl = tl .. " "
+  end
+
+  -- target win id and close button
+  tl = tl .. "|%#TabLine# twi" .. (require("nvim-tree.lib").target_winid or "?") .. " %999X| X |"
+
+  return tl
+end
 
 -- The initial state of a tab
 local tabinitial = {
@@ -64,18 +111,6 @@ local tabinitial = {
   winnr = nil,
 }
 
-local BUFNR_PER_TAB = {}
-
----@type { name: string, value: any }[]
-local BUFFER_OPTIONS = {
-  { name = "bufhidden",  value = "wipe" },
-  { name = "buflisted",  value = false },
-  { name = "buftype",    value = "nofile" },
-  { name = "filetype",   value = "NvimTree" },
-  { name = "modifiable", value = false },
-  { name = "swapfile",   value = false },
-}
-
 ---@param bufnr integer
 ---@return boolean
 local function matches_bufnr(bufnr)
@@ -87,7 +122,7 @@ local function matches_bufnr(bufnr)
   return false
 end
 
-local function wipe_rogue_buffer()
+function M.wipe_rogue_buffer()
   for _, bufnr in ipairs(vim.api.nvim_list_bufs()) do
     if not matches_bufnr(bufnr) and utils.is_nvim_tree_buf(bufnr) then
       pcall(vim.api.nvim_buf_delete, bufnr, { force = true })
@@ -96,345 +131,52 @@ local function wipe_rogue_buffer()
 end
 
 ---@param bufnr integer|boolean|nil
-local function create_buffer(bufnr)
-  wipe_rogue_buffer()
-
+---@return integer tab
+function M.create_buffer(bufnr)
   local tab = vim.api.nvim_get_current_tabpage()
   BUFNR_PER_TAB[tab] = bufnr or vim.api.nvim_create_buf(false, false)
-  vim.api.nvim_buf_set_name(M.get_bufnr(), "NvimTree_" .. tab)
-
-  bufnr = M.get_bufnr()
-  for _, option in ipairs(BUFFER_OPTIONS) do
-    vim.api.nvim_set_option_value(option.name, option.value, { buf = bufnr })
+  return tab
 end
 
-  require("nvim-tree.keymap").on_attach(M.get_bufnr())
-
-  events._dispatch_tree_attached_post(M.get_bufnr())
-end
-
----@param size (fun():integer)|integer|string
----@return integer
-local function get_size(size)
-  if type(size) == "number" then
-    return size
-  elseif type(size) == "function" then
-    return get_size(size())
-  end
-  local size_as_number = tonumber(size:sub(0, -2))
-  local percent_as_decimal = size_as_number / 100
-  return math.floor(vim.o.columns * percent_as_decimal)
-end
-
----@param size (fun():integer)|integer|nil
----@return integer
-local function get_width(size)
-  if size then
-    return get_size(size)
-  else
-    return get_size(M.View.width)
-  end
-end
-
-local move_tbl = {
-  left = "H",
-  right = "L",
-}
-
 -- setup_tabpage sets up the initial state of a tab
 ---@param tabpage integer
-local function setup_tabpage(tabpage)
+function M.setup_tabpage(tabpage)
   local winnr = vim.api.nvim_get_current_win()
-  M.View.tabpages[tabpage] = vim.tbl_extend("force", M.View.tabpages[tabpage] or tabinitial, { winnr = winnr })
-end
-
-local function set_window_options_and_buffer()
-  pcall(vim.api.nvim_command, "buffer " .. M.get_bufnr())
-
-  if vim.fn.has("nvim-0.10") == 1 then
-    local eventignore = vim.api.nvim_get_option_value("eventignore", {})
-    vim.api.nvim_set_option_value("eventignore", "all", {})
-
-    for k, v in pairs(M.View.winopts) do
-      vim.api.nvim_set_option_value(k, v, { scope = "local" })
-    end
-
-    vim.api.nvim_set_option_value("eventignore", eventignore, {})
-  else
-    local eventignore = vim.api.nvim_get_option("eventignore") ---@diagnostic disable-line: deprecated
-    vim.api.nvim_set_option("eventignore", "all") ---@diagnostic disable-line: deprecated
-
-    -- #3009 vim.api.nvim_win_set_option does not set local scope without explicit winid.
-    -- Revert to opt_local instead of propagating it through for just the 0.10 path.
-    for k, v in pairs(M.View.winopts) do
-      vim.opt_local[k] = v
-    end
-
-    vim.api.nvim_set_option("eventignore", eventignore) ---@diagnostic disable-line: deprecated
-  end
-end
-
----@return table
-local function open_win_config()
-  if type(M.View.float.open_win_config) == "function" then
-    return M.View.float.open_win_config()
-  else
-    return M.View.float.open_win_config
-  end
-end
-
-local function open_window()
-  if M.View.float.enable then
-    vim.api.nvim_open_win(0, true, open_win_config())
-  else
-    vim.api.nvim_command("vsp")
-    M.reposition_window()
-  end
-  setup_tabpage(vim.api.nvim_get_current_tabpage())
-  set_window_options_and_buffer()
-end
-
----@param buf integer
----@return boolean
-local function is_buf_displayed(buf)
-  return vim.api.nvim_buf_is_valid(buf) and vim.fn.buflisted(buf) == 1
-end
-
----@return number|nil
-local function get_alt_or_next_buf()
-  local alt_buf = vim.fn.bufnr("#")
-  if is_buf_displayed(alt_buf) then
-    return alt_buf
-  end
-
-  for _, buf in ipairs(vim.api.nvim_list_bufs()) do
-    if is_buf_displayed(buf) then
-      return buf
-    end
-  end
-end
-
-local function switch_buf_if_last_buf()
-  if #vim.api.nvim_list_wins() == 1 then
-    local buf = get_alt_or_next_buf()
-    if buf then
-      vim.cmd("sb" .. buf)
-    else
-      vim.cmd("new")
-    end
-  end
+  TABPAGES[tabpage] = vim.tbl_extend("force", TABPAGES[tabpage] or tabinitial, { winnr = winnr })
 end
 
 -- save_tab_state saves any state that should be preserved across redraws.
 ---@param tabnr integer
-local function save_tab_state(tabnr)
+function M.save_tab_state(tabnr)
   local tabpage = tabnr or vim.api.nvim_get_current_tabpage()
-  M.View.cursors[tabpage] = vim.api.nvim_win_get_cursor(M.get_winnr(tabpage) or 0)
+  CURSORS[tabpage] = vim.api.nvim_win_get_cursor(M.get_winnr(tabpage) or 0)
 end
 
----@param tabpage integer
-local function close(tabpage)
-  if not M.is_visible({ tabpage = tabpage }) then
-    return
-  end
-  save_tab_state(tabpage)
-  switch_buf_if_last_buf()
-  local tree_win = M.get_winnr(tabpage)
-  local current_win = vim.api.nvim_get_current_win()
-  for _, win in pairs(vim.api.nvim_tabpage_list_wins(tabpage)) do
-    if vim.api.nvim_win_get_config(win).relative == "" then
-      local prev_win = vim.fn.winnr("#") -- this tab only
-      if tree_win == current_win and prev_win > 0 then
-        vim.api.nvim_set_current_win(vim.fn.win_getid(prev_win))
-      end
-      if vim.api.nvim_win_is_valid(tree_win or 0) then
-        local success, error = pcall(vim.api.nvim_win_close, tree_win or 0, true)
-        if not success then
-          notify.debug("Failed to close window: " .. error)
-          return
-        end
-      end
-      return
-    end
+---@param fn fun(tabpage: integer)
+function M.all_tabs_callback(fn)
+  for tabpage, _ in pairs(TABPAGES) do
+    fn(tabpage)
   end
 end
 
-function M.close_this_tab_only()
-  close(vim.api.nvim_get_current_tabpage())
-end
-
-function M.close_all_tabs()
-  for tabpage, _ in pairs(M.View.tabpages) do
-    close(tabpage)
-  end
-end
-
----@param tabpage integer|nil
-function M.close(tabpage)
-  if M.View.tab.sync.close then
-    M.close_all_tabs()
-  elseif tabpage then
-    close(tabpage)
-  else
-    M.close_this_tab_only()
-  end
-end
-
----@param options table|nil
-function M.open(options)
-  if M.is_visible() then
-    return
-  end
-
-  local profile = log.profile_start("view open")
-
-  events._dispatch_on_tree_pre_open()
-  create_buffer()
-  open_window()
-  M.resize()
-
-  local opts = options or { focus_tree = true }
-  if not opts.focus_tree then
-    vim.cmd("wincmd p")
-  end
-  events._dispatch_on_tree_open()
-
-  log.profile_end(profile)
-end
-
-local function grow()
-  local starts_at = M.is_root_folder_visible(require("nvim-tree.core").get_cwd()) and 1 or 0
-  local lines = vim.api.nvim_buf_get_lines(M.get_bufnr(), starts_at, -1, false)
-  -- number of columns of right-padding to indicate end of path
-  local padding = get_size(M.View.padding)
-
-  -- account for sign/number columns etc.
-  local wininfo = vim.fn.getwininfo(M.get_winnr())
-  if type(wininfo) == "table" and type(wininfo[1]) == "table" then
-    padding = padding + wininfo[1].textoff
-  end
-
-  local resizing_width = M.View.initial_width - padding
-  local max_width
-
-  -- maybe bound max
-  if M.View.max_width == -1 then
-    max_width = -1
-  else
-    max_width = get_width(M.View.max_width) - padding
-  end
-
-  local ns_id = vim.api.nvim_get_namespaces()["NvimTreeExtmarks"]
-  for line_nr, l in pairs(lines) do
-    local count = vim.fn.strchars(l)
-    -- also add space for right-aligned icons
-    local extmarks = vim.api.nvim_buf_get_extmarks(M.get_bufnr(), ns_id, { line_nr, 0 }, { line_nr, -1 }, { details = true })
-    count = count + utils.extmarks_length(extmarks)
-    if resizing_width < count then
-      resizing_width = count
-    end
-    if M.View.adaptive_size and max_width >= 0 and resizing_width >= max_width then
-      resizing_width = max_width
-      break
-    end
-  end
-  M.resize(resizing_width + padding)
-end
-
-function M.grow_from_content()
-  if M.View.adaptive_size then
-    grow()
-  end
-end
-
----@param size string|number|nil
-function M.resize(size)
-  if M.View.float.enable and not M.View.adaptive_size then
-    -- if the floating windows's adaptive size is not desired, then the
-    -- float size should be defined in view.float.open_win_config
-    return
-  end
-
-  if type(size) == "string" then
-    size = vim.trim(size)
-    local first_char = size:sub(1, 1)
-    size = tonumber(size)
-
-    if first_char == "+" or first_char == "-" then
-      size = M.View.width + size
-    end
-  end
-
-  if type(size) == "number" and size <= 0 then
-    return
-  end
-
-  if size then
-    M.View.width = size
-    M.View.height = size
-  end
-
-  if not M.is_visible() then
-    return
-  end
-
-  local winnr = M.get_winnr() or 0
-
-  local new_size = get_width()
-
-  if new_size ~= vim.api.nvim_win_get_width(winnr) then
-    vim.api.nvim_win_set_width(winnr, new_size)
-    if not M.View.preserve_window_proportions then
-      vim.cmd(":wincmd =")
-    end
-  end
-
-  events._dispatch_on_tree_resize(new_size)
-end
-
-function M.reposition_window()
-  local move_to = move_tbl[M.View.side]
-  vim.api.nvim_command("wincmd " .. move_to)
-  M.resize()
-end
-
-local function set_current_win()
+function M.set_current_win()
   local current_tab = vim.api.nvim_get_current_tabpage()
-  M.View.tabpages[current_tab].winnr = vim.api.nvim_get_current_win()
-end
-
----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 }
-  events._dispatch_on_tree_pre_open()
-  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()
-  set_window_options_and_buffer()
-  if opts.resize then
-    M.reposition_window()
-    M.resize()
-  end
-  events._dispatch_on_tree_open()
+  TABPAGES[current_tab].winnr = vim.api.nvim_get_current_win()
 end
 
 function M.abandon_current_window()
   local tab = vim.api.nvim_get_current_tabpage()
   BUFNR_PER_TAB[tab] = nil
-  if M.View.tabpages[tab] then
-    M.View.tabpages[tab].winnr = nil
+  if TABPAGES[tab] then
+    TABPAGES[tab].winnr = nil
   end
 end
 
 function M.abandon_all_windows()
   for tab, _ in pairs(vim.api.nvim_list_tabpages()) do
     BUFNR_PER_TAB[tab] = nil
-    if M.View.tabpages[tab] then
-      M.View.tabpages[tab].winnr = nil
+    if TABPAGES[tab] then
+      TABPAGES[tab].winnr = nil
     end
   end
 end
@@ -443,15 +185,15 @@ end
 ---@return boolean
 function M.is_visible(opts)
   if opts and opts.tabpage then
-    if M.View.tabpages[opts.tabpage] == nil then
+    if TABPAGES[opts.tabpage] == nil then
       return false
     end
-    local winnr = M.View.tabpages[opts.tabpage].winnr
+    local winnr = TABPAGES[opts.tabpage].winnr
     return winnr and vim.api.nvim_win_is_valid(winnr)
   end
 
   if opts and opts.any_tabpage then
-    for _, v in pairs(M.View.tabpages) do
+    for _, v in pairs(TABPAGES) do
       if v.winnr and vim.api.nvim_win_is_valid(v.winnr) then
         return true
       end
@@ -469,24 +211,6 @@ function M.set_cursor(opts)
   end
 end
 
----@param winnr number|nil
----@param open_if_closed boolean|nil
-function M.focus(winnr, open_if_closed)
-  local wnr = winnr or M.get_winnr()
-
-  if vim.api.nvim_win_get_tabpage(wnr or 0) ~= vim.api.nvim_win_get_tabpage(0) then
-    M.close()
-    M.open()
-    wnr = M.get_winnr()
-  elseif open_if_closed and not M.is_visible() then
-    M.open()
-  end
-
-  if wnr then
-    vim.api.nvim_set_current_win(wnr)
-  end
-end
-
 --- Retrieve the winid of the open tree.
 ---@param opts ApiTreeWinIdOpts|nil
 ---@return number|nil winid unlike get_winnr(), this returns nil if the nvim-tree window is not visible
@@ -505,7 +229,7 @@ end
 --- Restores the state of a NvimTree window if it was initialized before.
 function M.restore_tab_state()
   local tabpage = vim.api.nvim_get_current_tabpage()
-  M.set_cursor(M.View.cursors[tabpage])
+  M.set_cursor(CURSORS[tabpage])
 end
 
 --- Returns the window number for nvim-tree within the tabpage specified
@@ -513,7 +237,7 @@ end
 ---@return number|nil
 function M.get_winnr(tabpage)
   tabpage = tabpage or vim.api.nvim_get_current_tabpage()
-  local tabinfo = M.View.tabpages[tabpage]
+  local tabinfo = TABPAGES[tabpage]
   if tabinfo and tabinfo.winnr and vim.api.nvim_win_is_valid(tabinfo.winnr) then
     return tabinfo.winnr
   end
@@ -525,115 +249,14 @@ function M.get_bufnr()
   return BUFNR_PER_TAB[vim.api.nvim_get_current_tabpage()]
 end
 
-function M._prevent_buffer_override()
-  local view_winnr = M.get_winnr()
-  local view_bufnr = M.get_bufnr()
-
-  -- need to schedule to let the new buffer populate the window
-  -- because this event needs to be run on bufWipeout.
-  -- Otherwise the curwin/curbuf would match the view buffer and the view window.
-  vim.schedule(function()
-    local curwin = vim.api.nvim_get_current_win()
-    local curwinconfig = vim.api.nvim_win_get_config(curwin)
-    local curbuf = vim.api.nvim_win_get_buf(curwin)
-    local bufname = vim.api.nvim_buf_get_name(curbuf)
-
-    if not bufname:match("NvimTree") then
-      for i, tabpage in ipairs(M.View.tabpages) do
-        if tabpage.winnr == view_winnr then
-          M.View.tabpages[i] = nil
+---@param winnr number|nil
+function M.clear_tabpage(winnr)
+  for i, tabpage in ipairs(TABPAGES) do
+    if tabpage.winnr == winnr then
+      TABPAGES[i] = nil
       break
     end
   end
 end
-    if curwin ~= view_winnr or bufname == "" or curbuf == view_bufnr then
-      return
-    end
-
-    -- patch to avoid the overriding window to be fixed in size
-    -- might need a better patch
-    vim.cmd("setlocal nowinfixwidth")
-    vim.cmd("setlocal nowinfixheight")
-    M.open({ focus_tree = false })
-
-    local explorer = require("nvim-tree.core").get_explorer()
-    if explorer then
-      explorer.renderer:draw()
-    end
-
-    pcall(vim.api.nvim_win_close, curwin, { force = true })
-
-    -- to handle opening a file using :e when nvim-tree is on floating mode
-    -- falling back to the current window instead of creating a new one
-    if curwinconfig.relative ~= "" then
-      require("nvim-tree.actions.node.open-file").fn("edit_in_place", bufname)
-    else
-      require("nvim-tree.actions.node.open-file").fn("edit", bufname)
-    end
-  end)
-end
-
----@param cwd string|nil
----@return boolean
-function M.is_root_folder_visible(cwd)
-  return cwd ~= "/" and not M.View.hide_root_folder
-end
-
--- used on ColorScheme event
-function M.reset_winhl()
-  local winnr = M.get_winnr()
-  if winnr and vim.api.nvim_win_is_valid(winnr) then
-    vim.wo[M.get_winnr()].winhl = M.View.winopts.winhl
-  end
-end
-
----Check if width determined or calculated on-fly
----@return boolean
-function M.is_width_determined()
-  return type(M.View.width) ~= "function"
-end
-
----Configure width-related config
----@param width string|function|number|table|nil
-function M.configure_width(width)
-  if type(width) == "table" then
-    M.View.adaptive_size = true
-    M.View.width = width.min or DEFAULT_MIN_WIDTH
-    M.View.max_width = width.max or DEFAULT_MAX_WIDTH
-    M.View.padding = width.padding or DEFAULT_PADDING
-  elseif width == nil then
-    if M.config.width ~= nil then
-      -- if we had input config - fallback to it
-      M.configure_width(M.config.width)
-    else
-      -- otherwise - restore initial width
-      M.View.width = M.View.initial_width
-    end
-  else
-    M.View.adaptive_size = false
-    M.View.width = width
-  end
-end
-
-function M.setup(opts)
-  local options = opts.view or {}
-  M.View.centralize_selection = options.centralize_selection
-  M.View.side = (options.side == "right") and "right" or "left"
-  M.View.height = options.height
-  M.View.hide_root_folder = opts.renderer.root_folder_label == false
-  M.View.tab = opts.tab
-  M.View.preserve_window_proportions = options.preserve_window_proportions
-  M.View.winopts.cursorline = options.cursorline
-  M.View.winopts.number = options.number
-  M.View.winopts.relativenumber = options.relativenumber
-  M.View.winopts.signcolumn = options.signcolumn
-  M.View.float = options.float
-  M.on_attach = opts.on_attach
-
-  M.config = options
-  M.configure_width(options.width)
-
-  M.View.initial_width = get_width()
-end
 
 return M