feat: add trashing (#749)

README.md

@@ -91,6 +91,10 @@ require'nvim-tree'.setup {
     },
     number = false,
     relativenumber = false
+  },
+  trash = {
+    cmd = "trash",
+    require_confirm = true
   }
 }
 ```
@@ -192,6 +196,7 @@ highlight NvimTreeFolderIcon guibg=blue
 - type `gy` will copy absolute path to system clipboard
 - type `p` to paste from clipboard. Cut clipboard has precedence over copy (will prompt for confirmation)
 - type `d` to delete a file (will prompt for confirmation)
+- type `D` to trash a file (configured in setup())
 - type `]c` to go to next git item
 - type `[c` to go to prev git item
 - type `-` to navigate up to the parent directory of the current file/directory
@@ -243,6 +248,7 @@ local list = {
   { key = "R",                            cb = tree_cb("refresh") },
   { key = "a",                            cb = tree_cb("create") },
   { key = "d",                            cb = tree_cb("remove") },
+  { key = "D",                            cb = tree_cb("trash") },
   { key = "r",                            cb = tree_cb("rename") },
   { key = "<C-r>",                        cb = tree_cb("full_rename") },
   { key = "x",                            cb = tree_cb("cut") },

doc/nvim-tree-lua.txt

@@ -120,6 +120,10 @@ function.
       filters = {
         dotfiles = false,
         custom = {}
+      },
+      trash = {
+        cmd = "trash",
+        require_confirm = true,
       }
     }
 <
@@ -321,6 +325,16 @@ Here is a list of the options available in the setup call:
       type: `{string}`
       default: `{}`
 
+*nvim-tree.trash*
+|trash|: configuration options for trashing
+
+  - |trash.cmd|: the command used to trash items (must be installed on your system)
+      type: `string`
+      default: `"trash"`
+
+  - |trash.require_confirm|: show a prompt before trashing takes place.
+      type: `boolean`
+      default: `true`
 
 ==============================================================================
 OPTIONS				                  *nvim-tree-options*
@@ -562,6 +576,7 @@ Defaults to:
       { key = "R",                            cb = tree_cb("refresh") },
       { key = "a",                            cb = tree_cb("create") },
       { key = "d",                            cb = tree_cb("remove") },
+      { key = "D",                            cb = tree_cb("trash") },
       { key = "r",                            cb = tree_cb("rename") },
       { key = "<C-r>",                        cb = tree_cb("full_rename") },
       { key = "x",                            cb = tree_cb("cut") },

lua/nvim-tree.lua

@@ -8,6 +8,7 @@ local renderer = require'nvim-tree.renderer'
 local fs = require'nvim-tree.fs'
 local view = require'nvim-tree.view'
 local utils = require'nvim-tree.utils'
+local trash = require'nvim-tree.trash'
 
 local _config = {
   is_windows          = vim.fn.has('win32') == 1 or vim.fn.has('win32unix') == 1,
@@ -151,6 +152,7 @@ local keypress_funcs = {
     )
     luv.unref(process.handle)
   end,
+  trash = function(node) trash.trash_node(node, _config) end,
 }
 
 function M.on_keypress(mode)
@@ -453,6 +455,7 @@ function M.setup(conf)
   _config.system_open = opts.system_open
   _config.open_on_setup = opts.open_on_setup
   _config.ignore_ft_on_setup = opts.ignore_ft_on_setup
+  _config.trash = opts.trash or {}
   if type(opts.update_to_buf_dir) == "boolean" then
     utils.warn("update_to_buf_dir is now a table, see :help nvim-tree.update_to_buf_dir")
     _config.update_to_buf_dir = {

lua/nvim-tree/trash.lua

@@ -0,0 +1,72 @@
+local M = {}
+
+local lib = require'nvim-tree.lib'
+local utils = require'nvim-tree.utils'
+local events = require'nvim-tree.events'
+local api = vim.api
+
+local function clear_buffer(absolute_path)
+  local bufs = vim.fn.getbufinfo({bufloaded = 1, buflisted = 1})
+  for _, buf in pairs(bufs) do
+    if buf.name == absolute_path then
+      if buf.hidden == 0 and #bufs > 1 then
+        local winnr = api.nvim_get_current_win()
+        api.nvim_set_current_win(buf.windows[1])
+        vim.cmd(':bn')
+        api.nvim_set_current_win(winnr)
+      end
+      vim.api.nvim_buf_delete(buf.bufnr, {})
+      return
+    end
+  end
+end
+
+function M.trash_node(node, cfg)
+  if node.name == '..' then return end
+
+  -- configs
+  if cfg.is_unix then
+    if cfg.trash.cmd == nil then cfg.trash.cmd = 'trash' end
+    if cfg.trash.require_confirm  == nil then cfg.trash.require_confirm  = true end
+  else
+    print('trash is currently a UNIX only feature!')
+  end
+
+  -- trashes a path (file or folder)
+  local function trash_path(on_exit)
+    vim.fn.jobstart(cfg.trash.cmd.." "..node.absolute_path, {
+      detach = true,
+      on_exit = on_exit,
+    })
+  end
+
+  local is_confirmed = true
+
+  -- confirmation prompt
+  if cfg.trash.require_confirm then
+    is_confirmed = false
+    print("Trash " ..node.name.. " ? y/n")
+    local ans = utils.get_user_input_char()
+    if ans:match('^y') then is_confirmed = true end
+    utils.clear_prompt()
+  end
+
+  -- trashing
+  if is_confirmed then
+    if node.entries ~= nil and not node.link_to then
+      trash_path(function()
+        events._dispatch_folder_removed(node.absolute_path)
+        lib.refresh_tree()
+      end)
+    else
+      trash_path(function()
+        events._dispatch_file_removed(node.absolute_path)
+        clear_buffer(node.absolute_path)
+        lib.refresh_tree()
+      end)
+    end
+
+  end
+end
+
+return M

lua/nvim-tree/view.lua

@@ -61,6 +61,7 @@ M.View = {
     { key = "R",                            cb = M.nvim_tree_callback("refresh") },
     { key = "a",                            cb = M.nvim_tree_callback("create") },
     { key = "d",                            cb = M.nvim_tree_callback("remove") },
+    { key = "D",                            cb = M.nvim_tree_callback("trash") },
     { key = "r",                            cb = M.nvim_tree_callback("rename") },
     { key = "<C-r>",                        cb = M.nvim_tree_callback("full_rename") },
     { key = "x",                            cb = M.nvim_tree_callback("cut") },