refactor(#2826): singleton View class, WIP

lua/nvim-tree.lua

@@ -74,7 +74,7 @@ function M.change_root(path, bufnr)
 end
 
 function M.tab_enter()
-  if view.is_visible({ any_tabpage = true }) then
+  if view.View:is_visible({ any_tabpage = true }) then
     local bufname = vim.api.nvim_buf_get_name(0)
 
     local ft
@@ -99,7 +99,7 @@ function M.tab_enter()
 end
 
 function M.open_on_directory()
-  local should_proceed = _config.hijack_directories.auto_open or view.is_visible()
+  local should_proceed = _config.hijack_directories.auto_open or view.View:is_visible()
   if not should_proceed then
     return
   end
@@ -160,7 +160,7 @@ local function setup_autocommands(opts)
       if opts.actions.open_file.eject then
         view._prevent_buffer_override()
       else
-        view.abandon_current_window()
+        view.View:abandon_current_window()
       end
     end,
   })
@@ -693,7 +693,7 @@ end
 
 function M.purge_all_state()
   view.View:close_all_tabs()
-  view.abandon_all_windows()
+  view.View:abandon_all_windows()
   local explorer = core.get_explorer()
   if explorer then
     require("nvim-tree.git").purge_state()

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

@@ -14,7 +14,7 @@ local running = {}
 ---@param path string relative or absolute
 function M.fn(path)
   local explorer = core.get_explorer()
-  if not explorer or not view.is_visible() then
+  if not explorer or not view.View:is_visible() then
     return
   end
 
@@ -84,9 +84,9 @@ function M.fn(path)
     end)
     :iterate()
 
-  if found and view.is_visible() then
+  if found and view.View:is_visible() then
     explorer.renderer:draw()
-    view.set_cursor({ line, 0 })
+    view.View:set_cursor({ line, 0 })
   end
 
   running[path_real] = false

lua/nvim-tree/actions/moves/item.lua

@@ -67,9 +67,9 @@ local function move(explorer, where, what, skip_gitignored)
   end
 
   if nex then
-    view.set_cursor({ nex, 0 })
+    view.View:set_cursor({ nex, 0 })
   elseif vim.o.wrapscan and first then
-    view.set_cursor({ first, 0 })
+    view.View:set_cursor({ first, 0 })
   end
 end
 
@@ -189,13 +189,13 @@ local function move_prev_recursive(explorer, what, skip_gitignored)
 
       -- 4.3)
       if node_init.name == ".." then -- root node
-        view.set_cursor({ 1, 0 })    -- move to root node (position 1)
+        view.View:set_cursor({ 1, 0 })    -- move to root node (position 1)
       else
         local node_init_line = utils.find_node_line(node_init)
         if node_init_line < 0 then
           return
         end
-        view.set_cursor({ node_init_line, 0 })
+        view.View:set_cursor({ node_init_line, 0 })
       end
 
       -- 4.4)

lua/nvim-tree/actions/moves/parent.lua

@@ -25,7 +25,7 @@ function M.fn(should_close)
     local parent = (node:get_parent_of_group() or node).parent
 
     if not parent or not parent.parent then
-      view.set_cursor({ 1, 0 })
+      view.View:set_cursor({ 1, 0 })
       return
     end
 
@@ -33,7 +33,7 @@ function M.fn(should_close)
       return n.absolute_path == parent.absolute_path
     end)
 
-    view.set_cursor({ line + 1, 0 })
+    view.View:set_cursor({ line + 1, 0 })
     if should_close then
       parent.open = false
       parent.explorer.renderer:draw()

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

@@ -367,7 +367,7 @@ local function is_already_loaded(filename)
 end
 
 local function edit_in_current_buf(filename)
-  require("nvim-tree.view").abandon_current_window()
+  require("nvim-tree.view").View:abandon_current_window()
   if M.relative_path then
     filename = utils.path_relative(filename, vim.fn.getcwd())
   end
@@ -413,7 +413,7 @@ function M.fn(mode, filename)
   end
 
   if M.resize_window then
-    view.resize()
+    view.View:resize()
   end
 
   if mode == "preview" or mode == "preview_no_picker" then

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

@@ -41,7 +41,7 @@ function M.fn(opts)
     return
   end
 
-  if view.is_visible() then
+  if view.View:is_visible() then
     -- focus
     if opts.focus then
       lib.set_target_win()

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

@@ -23,7 +23,7 @@ function M.fn(opts)
     opts.path = nil
   end
 
-  if view.is_visible() then
+  if view.View:is_visible() then
     -- focus
     lib.set_target_win()
     view.focus()

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

@@ -8,7 +8,7 @@ function M.fn(opts)
   if opts == nil then
     -- reset to config values
     view.View:configure_width()
-    view.resize()
+    view.View:resize()
     return
   end
 
@@ -17,7 +17,7 @@ function M.fn(opts)
 
   if width_cfg ~= nil then
     view.View:configure_width(width_cfg)
-    view.resize()
+    view.View:resize()
     return
   end
 
@@ -28,7 +28,7 @@ function M.fn(opts)
 
   local absolute = options.absolute
   if type(absolute) == "number" then
-    view.resize(absolute)
+    view.View:resize(absolute)
     return
   end
 
@@ -39,7 +39,7 @@ function M.fn(opts)
       relative_size = "+" .. relative_size
     end
 
-    view.resize(relative_size)
+    view.View:resize(relative_size)
     return
   end
 end

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

@@ -40,7 +40,7 @@ function M.fn(opts, no_focus, cwd, bang)
     opts.path = nil
   end
 
-  if view.is_visible() then
+  if view.View:is_visible() then
     -- close
     view.View:close()
   else

lua/nvim-tree/commands.lua

@@ -111,7 +111,7 @@ local CMDS = {
       bar = true,
     },
     command = function(c)
-      view.resize(c.args)
+      view.View:resize(c.args)
     end,
   },
   {

lua/nvim-tree/explorer/init.lua

@@ -486,7 +486,7 @@ function Explorer:reload_explorer()
 
   local projects = git.reload_all_projects()
   self:refresh_nodes(projects)
-  if view.is_visible() then
+  if view.View:is_visible() then
     self.renderer:draw()
   end
   event_running = false

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

@@ -204,7 +204,7 @@ function LiveFilter:start_filtering()
   self.explorer.renderer:draw()
   local row = require("nvim-tree.core").get_nodes_starting_line() - 1
   local col = #self.prefix > 0 and #self.prefix - 1 or 1
-  view.set_cursor({ row, col })
+  view.View:set_cursor({ row, col })
   -- needs scheduling to let the cursor move before initializing the window
   vim.schedule(function()
     return create_overlay(self)

lua/nvim-tree/lib.lua

@@ -111,17 +111,17 @@ function M.open(opts)
 
   if should_hijack_current_buf() then
     view.View:close_this_tab_only()
-    view.open_in_win()
+    view.View:open_in_win()
     if explorer then
       explorer.renderer:draw()
     end
   elseif opts.winid then
-    view.open_in_win({ hijack_current_buf = false, resize = false, winid = opts.winid })
+    view.View:open_in_win({ hijack_current_buf = false, resize = false, winid = opts.winid })
     if explorer then
       explorer.renderer:draw()
     end
   elseif opts.current_window then
-    view.open_in_win({ hijack_current_buf = false, resize = false })
+    view.View:open_in_win({ hijack_current_buf = false, resize = false })
     if explorer then
       explorer.renderer:draw()
     end

lua/nvim-tree/renderer/init.lua

@@ -113,7 +113,7 @@ function Renderer:draw()
     vim.api.nvim_win_set_cursor(view.get_winnr() or 0, cursor)
   end
 
-  view.grow_from_content()
+  view.View:grow_from_content()
 
   log.profile_end(profile)
 

lua/nvim-tree/view.lua

@@ -114,6 +114,7 @@ local tabinitial = {
   winnr = nil,
 }
 
+-- TODO member
 local BUFNR_PER_TAB = {}
 
 ---@type { name: string, value: any }[]
@@ -244,7 +245,7 @@ function View:open_window()
     vim.api.nvim_open_win(0, true, self:open_win_config())
   else
     vim.api.nvim_command("vsp")
-    M.reposition_window()
+    self:reposition_window()
   end
   self:setup_tabpage(vim.api.nvim_get_current_tabpage())
   self:set_window_options_and_buffer()
@@ -286,13 +287,13 @@ end
 ---@param tabnr integer
 function View: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)
+  self.cursors[tabpage] = vim.api.nvim_win_get_cursor(M.get_winnr(tabpage) or 0)
 end
 
 ---@private
 ---@param tabpage integer
 function View:close_internal(tabpage)
-  if not M.is_visible({ tabpage = tabpage }) then
+  if not self:is_visible({ tabpage = tabpage }) then
     return
   end
   self:save_tab_state(tabpage)
@@ -329,7 +330,7 @@ end
 
 ---@param tabpage integer|nil
 function View:close(tabpage)
-  if M.View.tab.sync.close then
+  if self.tab.sync.close then
     self:close_all_tabs()
   elseif tabpage then
     self:close_internal(tabpage)
@@ -340,7 +341,7 @@ end
 
 ---@param options table|nil
 function View:open(options)
-  if M.is_visible() then
+  if self:is_visible() then
     return
   end
 
@@ -349,7 +350,7 @@ function View:open(options)
   events._dispatch_on_tree_pre_open()
   self:create_buffer()
   self:open_window()
-  M.resize()
+  self:resize()
 
   local opts = options or { focus_tree = true }
   if not opts.focus_tree then
@@ -360,11 +361,12 @@ function View:open(options)
   log.profile_end(profile)
 end
 
-local function grow()
+---@private
+function View: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 = M.View:get_size(M.View.padding)
+  local padding = self:get_size(self.padding)
 
   -- account for sign/number columns etc.
   local wininfo = vim.fn.getwininfo(M.get_winnr())
@@ -372,14 +374,14 @@ local function grow()
     padding = padding + wininfo[1].textoff
   end
 
-  local resizing_width = M.View.initial_width - padding
+  local resizing_width = self.initial_width - padding
   local max_width
 
   -- maybe bound max
-  if M.View.max_width == -1 then
+  if self.max_width == -1 then
     max_width = -1
   else
-    max_width = M.View:get_width(M.View.max_width) - padding
+    max_width = self:get_width(self.max_width) - padding
   end
 
   local ns_id = vim.api.nvim_get_namespaces()["NvimTreeExtmarks"]
@@ -391,23 +393,23 @@ local function grow()
     if resizing_width < count then
       resizing_width = count
     end
-    if M.View.adaptive_size and max_width >= 0 and resizing_width >= max_width then
+    if self.adaptive_size and max_width >= 0 and resizing_width >= max_width then
       resizing_width = max_width
       break
     end
   end
-  M.resize(resizing_width + padding)
+  self:resize(resizing_width + padding)
 end
 
-function M.grow_from_content()
-  if M.View.adaptive_size then
-    grow()
+function View:grow_from_content()
+  if self.adaptive_size then
+    self:grow()
   end
 end
 
 ---@param size string|number|nil
-function M.resize(size)
-  if M.View.float.enable and not M.View.adaptive_size then
+function View: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
@@ -419,7 +421,7 @@ function M.resize(size)
     size = tonumber(size)
 
     if first_char == "+" or first_char == "-" then
-      size = M.View.width + size
+      size = self.width + size
     end
   end
 
@@ -428,21 +430,21 @@ function M.resize(size)
   end
 
   if size then
-    M.View.width = size
-    M.View.height = size
+    self.width = size
+    self.height = size
   end
 
-  if not M.is_visible() then
+  if not self:is_visible() then
     return
   end
 
   local winnr = M.get_winnr() or 0
 
-  local new_size = M.View:get_width()
+  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 M.View.preserve_window_proportions then
+    if not self.preserve_window_proportions then
       vim.cmd(":wincmd =")
     end
   end
@@ -450,66 +452,68 @@ function M.resize(size)
   events._dispatch_on_tree_resize(new_size)
 end
 
-function M.reposition_window()
-  local move_to = move_tbl[M.View.side]
+---@private
+function View:reposition_window()
+  local move_to = move_tbl[self.side]
   vim.api.nvim_command("wincmd " .. move_to)
-  M.resize()
+  self:resize()
 end
 
-local function set_current_win()
+---@private
+function View:set_current_win()
   local current_tab = vim.api.nvim_get_current_tabpage()
-  M.View.tabpages[current_tab].winnr = vim.api.nvim_get_current_win()
+  self.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)
+function View: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
-  M.View:create_buffer(opts.hijack_current_buf and vim.api.nvim_get_current_buf())
-  M.View:setup_tabpage(vim.api.nvim_get_current_tabpage())
-  set_current_win()
-  M.View:set_window_options_and_buffer()
+  self:create_buffer(opts.hijack_current_buf and vim.api.nvim_get_current_buf())
+  self:setup_tabpage(vim.api.nvim_get_current_tabpage())
+  self:set_current_win()
+  self:set_window_options_and_buffer()
   if opts.resize then
-    M.reposition_window()
-    M.resize()
+    self:reposition_window()
+    self:resize()
   end
   events._dispatch_on_tree_open()
 end
 
-function M.abandon_current_window()
+function View: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 self.tabpages[tab] then
+    self.tabpages[tab].winnr = nil
   end
 end
 
-function M.abandon_all_windows()
+function View: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 self.tabpages[tab] then
+      self.tabpages[tab].winnr = nil
     end
   end
 end
 
 ---@param opts table|nil
 ---@return boolean
-function M.is_visible(opts)
+function View:is_visible(opts)
   if opts and opts.tabpage then
-    if M.View.tabpages[opts.tabpage] == nil then
+    if self.tabpages[opts.tabpage] == nil then
       return false
     end
-    local winnr = M.View.tabpages[opts.tabpage].winnr
+    local winnr = self.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(self.tabpages) do
       if v.winnr and vim.api.nvim_win_is_valid(v.winnr) then
         return true
       end
@@ -521,8 +525,8 @@ function M.is_visible(opts)
 end
 
 ---@param opts table|nil
-function M.set_cursor(opts)
-  if M.is_visible() then
+function View:set_cursor(opts)
+  if self:is_visible() then
     pcall(vim.api.nvim_win_set_cursor, M.get_winnr(), opts)
   end
 end
@@ -536,7 +540,7 @@ function M.focus(winnr, open_if_closed)
     M.close()
     M.View:open()
     wnr = M.get_winnr()
-  elseif open_if_closed and not M.is_visible() then
+  elseif open_if_closed and not M.View:is_visible() then
     M.View:open()
   end
 
@@ -553,7 +557,7 @@ function M.winid(opts)
   if tabpage == 0 then
     tabpage = vim.api.nvim_get_current_tabpage()
   end
-  if M.is_visible({ tabpage = tabpage }) then
+  if M.View:is_visible({ tabpage = tabpage }) then
     return M.get_winnr(tabpage)
   else
     return nil
@@ -563,7 +567,7 @@ 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.View:set_cursor(M.View.cursors[tabpage])
 end
 
 --- Returns the window number for nvim-tree within the tabpage specified