refacto: move all keybind logic to actions/init

lua/nvim-tree/actions/init.lua

@@ -1,13 +1,47 @@
+local a = vim.api
+
 local lib = require'nvim-tree.lib'
 local config = require'nvim-tree.config'
 local view = require'nvim-tree.view'
+local nvim_tree_callback = require'nvim-tree.config'.nvim_tree_callback
 
-local M = {}
-
-function M.setup(opts)
-  require'nvim-tree.actions.system-open'.setup(opts.system_open)
-  require'nvim-tree.actions.trash'.setup(opts.trash)
-end
+local M = {
+  mappings = {
+    { key = {"<CR>", "o", "<2-LeftMouse>"}, action = "edit" },
+    { key = {"<2-RightMouse>", "<C-]>"},    action = "cd" },
+    { key = "<C-v>",                        action = "vsplit" },
+    { key = "<C-x>",                        action = "split"},
+    { key = "<C-t>",                        action = "tabnew" },
+    { key = "<",                            action = "prev_sibling" },
+    { key = ">",                            action = "next_sibling" },
+    { key = "P",                            action = "parent_node" },
+    { key = "<BS>",                         action = "close_node"},
+    { key = "<Tab>",                        action = "preview" },
+    { key = "K",                            action = "first_sibling" },
+    { key = "J",                            action = "last_sibling" },
+    { key = "I",                            action = "toggle_ignored" },
+    { key = "H",                            action = "toggle_dotfiles" },
+    { key = "R",                            action = "refresh" },
+    { key = "a",                            action = "create" },
+    { key = "d",                            action = "remove" },
+    { key = "D",                            action = "trash"},
+    { key = "r",                            action = "rename" },
+    { key = "<C-r>",                        action = "full_rename" },
+    { key = "x",                            action = "cut" },
+    { key = "c",                            action = "copy"},
+    { key = "p",                            action = "paste" },
+    { key = "y",                            action = "copy_name" },
+    { key = "Y",                            action = "copy_path" },
+    { key = "gy",                           action = "copy_absolute_path" },
+    { key = "[c",                           action = "prev_git_item" },
+    { key = "]c",                           action = "next_git_item" },
+    { key = "-",                            action = "dir_up" },
+    { key = "s",                            action = "system_open" },
+    { key = "q",                            action = "close"},
+    { key = "g?",                           action = "toggle_help" }
+  },
+  custom_keypress_funcs = {},
+}
 
 local function go_to(mode)
   local icon_state = config.get_icon_state()
@@ -44,10 +78,10 @@ local keypress_funcs = {
   dir_up = lib.dir_up,
   close = function() M.close() end,
   preview = function(node)
+    if node.name == '..' then
+      return
+    end
     if node.entries ~= nil then
-      if (node.name == '..') then
-        return
-      end
       return lib.expand_or_collapse(node)
     end
     return require'nvim-tree.actions.open-file'.fn('preview', node.absolute_path)
@@ -61,7 +95,7 @@ function M.on_keypress(action)
   local node = lib.get_node_at_cursor()
   if not node then return end
 
-  local custom_function = view.View.custom_keypress_funcs[action]
+  local custom_function = M.custom_keypress_funcs[action]
   local default_function = keypress_funcs[action]
 
   if type(custom_function) == 'function' then
@@ -87,4 +121,61 @@ function M.on_keypress(action)
   end
 end
 
+function M.apply_mappings(bufnr)
+  for _, b in pairs(M.mappings) do
+    local mapping_rhs = b.cb or nvim_tree_callback(b.action)
+    if type(b.key) == "table" then
+      for _, key in pairs(b.key) do
+        a.nvim_buf_set_keymap(bufnr, b.mode or 'n', key, mapping_rhs, { noremap = true, silent = true, nowait = true })
+      end
+    elseif mapping_rhs then
+      a.nvim_buf_set_keymap(bufnr, b.mode or 'n', b.key, mapping_rhs, { noremap = true, silent = true, nowait = true })
+    end
+  end
+end
+
+local function merge_mappings(user_mappings)
+  if #user_mappings == 0 then
+    return M.mappings
+  end
+
+  local user_keys = {}
+  for _, map in pairs(user_mappings) do
+    if type(map.key) == "table" then
+      for _, key in pairs(map.key) do
+        table.insert(user_keys, key)
+      end
+    else
+       table.insert(user_keys, map.key)
+    end
+    if map.action and type(map.action_cb) == "function" then
+      M.custom_keypress_funcs[map.action] = map.action_cb
+    end
+  end
+
+  local mappings = vim.tbl_filter(function(map)
+    return not vim.tbl_contains(user_keys, map.key)
+  end, M.mappings)
+
+  return vim.fn.extend(mappings, user_mappings)
+end
+
+local DEFAULT_MAPPING_CONFIG = {
+  custom_only = false,
+  list = {}
+}
+
+function M.setup(opts)
+  require'nvim-tree.actions.system-open'.setup(opts.system_open)
+  require'nvim-tree.actions.trash'.setup(opts.trash)
+
+  local user_map_config = (opts.view or {}).mappings or {}
+  local options = vim.tbl_deep_extend('force', DEFAULT_MAPPING_CONFIG, user_map_config)
+  if options.custom_only then
+    M.mappings = options.mappings.list
+  else
+    M.mappings = merge_mappings(options.list)
+  end
+end
+
 return M