Revert "refactor(#2826): View tracks winids and bufnrs via events, unused for now (#3170)"

This reverts commit 65bae44922.

lua/nvim-tree/explorer/init.lua

@@ -165,6 +165,22 @@ 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.view:prevent_buffer_override()
+      else
+        self.view:abandon_current_window()
+      end
+    end,
+  })
+
   vim.api.nvim_create_autocmd("BufEnter", {
     group = self.augroup_id,
     pattern = "NvimTree_*",

lua/nvim-tree/explorer/view.lua

@@ -18,9 +18,8 @@ local Class = require("nvim-tree.classic")
 ---@field private width (fun():integer)|integer|string
 ---@field private max_width integer
 ---@field private padding integer
--- TODO multi-instance replace with single members
+-- TODO multi-instance remove or replace with single member
 ---@field private bufnr_by_tabid table<integer, integer>
----@field private winid_by_tabid table<integer, integer>
 local View = Class:extend()
 
 ---@class View
@@ -34,14 +33,13 @@ local View = Class:extend()
 function View:new(args)
   args.explorer:log_new("View")
 
-  self.explorer       = args.explorer
+  self.explorer         = args.explorer
-  self.adaptive_size  = false
+  self.adaptive_size    = false
-  self.side           = (self.explorer.opts.view.side == "right") and "right" or "left"
+  self.side             = (self.explorer.opts.view.side == "right") and "right" or "left"
-  self.live_filter    = { prev_focused_node = nil, }
+  self.live_filter      = { prev_focused_node = nil, }
-  self.bufnr_by_tabid = {}
+  self.bufnr_by_tabid   = {}
-  self.winid_by_tabid = {}
 
-  self.winopts        = {
+  self.winopts          = {
     relativenumber = self.explorer.opts.view.relativenumber,
     number         = self.explorer.opts.view.number,
     list           = false,
@@ -62,6 +60,10 @@ function View:new(args)
 
   self:configure_width(self.explorer.opts.view.width)
   self.initial_width = self:get_width()
+
+  -- TODO multi-instance remove this; delete buffers rather than retaining them
+  local tabid = vim.api.nvim_get_current_tabpage()
+  self.bufnr_by_tabid[tabid] = globals.BUFNR_BY_TABID[tabid]
 end
 
 function View:destroy()
@@ -78,64 +80,6 @@ local BUFFER_OPTIONS = {
   { name = "swapfile",   value = false },
 }
 
----Buffer local autocommands to track state, deleted on buffer wipeout
----@private
----@param bufnr integer
-function View:create_autocmds(bufnr)
-  -- clear bufnr and winid
-  -- eject buffer opened in the nvim-tree window and create a new buffer
-  vim.api.nvim_create_autocmd("BufWipeout", {
-    group = self.explorer.augroup_id,
-    buffer = bufnr,
-    callback = function(data)
-      log.line("dev",
-        "View BufWipeout\n  bufnr = %s\n  data.buf = %s\n  self.bufnr_by_tabid = %s\n  self.winid_by_tabid = %s",
-        bufnr,
-        data.buf,
-        vim.inspect(self.bufnr_by_tabid, { newline = "" }),
-        vim.inspect(self.winid_by_tabid, { newline = "" }),
-        vim.inspect(data, { newline = "" })
-      )
-
-      -- clear the tab's buffer
-      self.bufnr_by_tabid = vim.tbl_map(function(b)
-        return b ~= bufnr and b or nil
-      end, self.bufnr_by_tabid)
-
-      -- clear the tab's window(s)
-      local winids = vim.fn.win_findbuf(bufnr)
-      self.winid_by_tabid = vim.tbl_map(function(winid)
-        return not vim.tbl_contains(winids, winid) and winid or nil
-      end, self.winid_by_tabid)
-
-      if self.explorer.opts.actions.open_file.eject then
-        self:prevent_buffer_override()
-      else
-        self:abandon_current_window()
-      end
-    end,
-  })
-
-  -- set winid
-  vim.api.nvim_create_autocmd("BufWinEnter", {
-    group = self.explorer.augroup_id,
-    buffer = bufnr,
-    callback = function(data)
-      local tabid = vim.api.nvim_get_current_tabpage()
-
-      log.line("dev",
-        "View BufWinEnter\n  bufnr = %s\n  data.buf = %s\n  self.bufnr_by_tabid = %s\n  self.winid_by_tabid = %s",
-        bufnr,
-        data.buf,
-        vim.inspect(self.bufnr_by_tabid, { newline = "" }),
-        vim.inspect(self.winid_by_tabid, { newline = "" })
-      )
-
-      self.winid_by_tabid[tabid] = vim.fn.bufwinid(data.buf) -- first on current tabpage
-    end,
-  })
-end
-
 -- TODO multi-instance remove this; delete buffers rather than retaining them
 ---@private
 ---@param bufnr integer
@@ -168,9 +112,9 @@ function View:create_buffer(bufnr)
 
   bufnr = bufnr or vim.api.nvim_create_buf(false, false)
 
-  self.bufnr_by_tabid[tabid] = bufnr
+  -- set both bufnr registries
-
   globals.BUFNR_BY_TABID[tabid] = bufnr
+  self.bufnr_by_tabid[tabid] = bufnr
 
   vim.api.nvim_buf_set_name(bufnr, "NvimTree_" .. tabid)
 
@@ -178,8 +122,6 @@ function View:create_buffer(bufnr)
     vim.api.nvim_set_option_value(option.name, option.value, { buf = bufnr })
   end
 
-  self:create_autocmds(bufnr)
-
   require("nvim-tree.keymap").on_attach(bufnr)
 
   events._dispatch_tree_attached_post(bufnr)
@@ -216,9 +158,7 @@ local move_tbl = {
 
 ---@private
 function View:set_window_options_and_buffer()
-  if not pcall(vim.api.nvim_command, "buffer " .. self:get_bufnr()) then
+  pcall(vim.api.nvim_command, "buffer " .. self:get_bufnr())
-    return
-  end
 
   if vim.fn.has("nvim-0.10") == 1 then
     local eventignore = vim.api.nvim_get_option_value("eventignore", {})
@@ -506,7 +446,9 @@ end
 function View:abandon_current_window()
   local tab = vim.api.nvim_get_current_tabpage()
 
+  -- reset both bufnr registries
   globals.BUFNR_BY_TABID[tab] = nil
+  self.bufnr_by_tabid[tab] = nil
 
   globals.WINID_BY_TABID[tab] = nil
 end
@@ -590,7 +532,7 @@ end
 ---@param tabid number|nil (optional) the number of the chosen tabpage. Defaults to current tabpage.
 ---@return integer? winid
 function View:winid(tabid)
-  local bufnr = globals.BUFNR_BY_TABID[tabid]
+  local bufnr = self.bufnr_by_tabid[tabid]
 
   if bufnr then
     for _, winid in pairs(vim.api.nvim_tabpage_list_wins(tabid or 0)) do
@@ -601,7 +543,6 @@ function View:winid(tabid)
   end
 end
 
---- TODO this needs to be refactored away; it's private now to contain it
 --- Returns the window number for nvim-tree within the tabpage specified
 ---@param tabid number|nil (optional) the number of the chosen tabpage. Defaults to current tabpage.
 ---@return number|nil
@@ -615,7 +556,7 @@ end
 function View:get_bufnr()
   local tab = vim.api.nvim_get_current_tabpage()
 
-  return globals.BUFNR_BY_TABID[tab]
+  return self.bufnr_by_tabid[tab]
 end
 
 function View:prevent_buffer_override()