Refacto: rewrite everything

- The tree is created with libuv functions, which makes it blazingly fast.
- The tree may now be faster than any other vim trees, it can handle directories with thousands of files without any latency at all (tested on 40K files, works flawlessly).
- More solid logic for opening and closing the tree.
- tree state is remembered (closing / opening a folder keeps opened subdirectories open)
- detection of multiple git projects in the tree
- more icon support
- smart rendering
- smart updates
- ms windows support
- gx replacement function running xdg-open on linux, open on macos

lua/lib/config.lua

@@ -1,57 +1,50 @@
-local api = vim.api
-
 local M = {}
 
-local function get(var, fallback)
-  if api.nvim_call_function('exists', { var }) == 1 then
-    return api.nvim_get_var(var)
-  else
-    return fallback
+function M.get_icon_state()
+  local show_icons = vim.g.lua_tree_show_icons or { git = 1, folders = 1, files = 1 }
+  local icons = {
+    default = nil,
+    git_icons = {
+      unstaged = "✗",
+      staged = "✓",
+      unmerged = "═",
+      renamed = "➜",
+      untracked = "★"
+    }
+  }
+
+  local user_icons = vim.g.lua_tree_icons
+  if user_icons then
+    if user_icons.default then
+      icons.default = user_icons.default
+    end
+    for key, val in pairs(user_icons.git) do
+      if icons.git_icons[key] then
+        icons.git_icons[key] = val
+      end
+    end
   end
-end
 
-local function get_color_from_hl(hl_name, fallback)
-  local id = api.nvim_get_hl_id_by_name(hl_name)
-  if not id then return fallback end
-
-  local hl = api.nvim_get_hl_by_id(id, true)
-  if not hl or not hl.foreground then return fallback end
-
-  return hl.foreground
-end
-
-local HAS_DEV_ICONS = api.nvim_call_function('exists', { "*WebDevIconsGetFileTypeSymbol" }) == 1
-
-local show_icons = get('lua_tree_show_icons', { git = 1, folders = 1, files = 1 })
-
-M.SHOW_FILE_ICON = HAS_DEV_ICONS and show_icons.files == 1
-M.SHOW_FOLDER_ICON = show_icons.folders == 1
-M.SHOW_GIT_ICON = show_icons.git == 1
-
-function M.get_colors()
   return {
-    red = get('terminal_color_1', get_color_from_hl('Keyword', 'Red')),
-    green = get('terminal_color_2', get_color_from_hl('Character', 'Green')),
-    yellow = get('terminal_color_3', get_color_from_hl('PreProc', 'Yellow')),
-    blue = get('terminal_color_4', get_color_from_hl('Include', 'Blue')),
-    purple = get('terminal_color_5', get_color_from_hl('Define', 'Purple')),
-    cyan = get('terminal_color_6', get_color_from_hl('Conditional', 'Cyan')),
-    orange = get('terminal_color_11', get_color_from_hl('Number', 'Orange')),
-    dark_red = get('terminal_color_9', get_color_from_hl('Keyword', 'DarkRed')),
+    show_file_icon = show_icons.files == 1 and vim.g.nvim_web_devicons == 1,
+    show_folder_icon = show_icons.folders == 1,
+    show_git_icon = show_icons.git == 1,
+    icons = icons
   }
 end
 
-local keybindings = get('lua_tree_bindings', {});
-
-M.bindings = {
-  edit = keybindings.edit or '<CR>',
-  edit_vsplit = keybindings.edit_vsplit or '<C-v>',
-  edit_split = keybindings.edit_split or '<C-x>',
-  edit_tab = keybindings.edit_tab or '<C-t>',
-  cd = keybindings.cd or '.',
-  create = keybindings.create or 'a',
-  remove = keybindings.remove or 'd',
-  rename = keybindings.rename or 'r',
-}
+function M.get_bindings()
+  local keybindings = vim.g.lua_tree_bindings or {}
+  return {
+    edit        = keybindings.edit or '<CR>',
+    edit_vsplit = keybindings.edit_vsplit or '<C-v>',
+    edit_split  = keybindings.edit_split or '<C-x>',
+    edit_tab    = keybindings.edit_tab or '<C-t>',
+    cd          = keybindings.cd or '<C-]>',
+    create      = keybindings.create or 'a',
+    remove      = keybindings.remove or 'd',
+    rename      = keybindings.rename or 'r',
+  }
+end
 
 return M