feat: Add a new keybinding "W" to collapse the whole tree (#1013)

README.md

@@ -222,6 +222,7 @@ require'nvim-tree'.setup {
 - `R` will refresh the tree
 - Double left click acts like `<CR>`
 - Double right click acts like `<C-]>`
+- `W` will collapse the whole tree
 
 ### Settings
 
@@ -284,6 +285,7 @@ local list = {
   { key = "s",                            action = "system_open" },
   { key = "q",                            action = "close" },
   { key = "g?",                           action = "toggle_help" },
+  { key = "W",                            action = "collapse_all" }
 }
 ```
 

doc/nvim-tree-lua.txt

@@ -599,6 +599,8 @@ INFORMATIONS				        *nvim-tree-info*
 - Double left click acts like '<CR>'
 - Double right click acts like '<C-]>'
 
+- 'W' will collapse the whole tree
+
 Defaults to:
 >
   lua <<EOF
@@ -636,6 +638,7 @@ Defaults to:
       { key = "s",                            action = "system_open" },
       { key = "q",                            action = "close" },
       { key = "g?",                           action = "toggle_help" },
+      { key = 'W',                            action = "collapse_all" }
     }
 <
 The `list` option in `view.mappings.list` is a table of

lua/nvim-tree/actions/init.lua

@@ -39,7 +39,8 @@ local M = {
     { key = "-",                            action = "dir_up" },
     { key = "s",                            action = "system_open" },
     { key = "q",                            action = "close"},
-    { key = "g?",                           action = "toggle_help" }
+    { key = "g?",                           action = "toggle_help" },
+    { key = 'W',                            action = "collapse_all" }
   },
   custom_keypress_funcs = {},
 }
@@ -47,6 +48,7 @@ local M = {
 local keypress_funcs = {
   close = view.close,
   close_node = require'nvim-tree.actions.movements'.parent_node(true),
+  collapse_all = require'nvim-tree.actions.collapse-all'.fn,
   copy_absolute_path = require'nvim-tree.actions.copy-paste'.copy_absolute_path,
   copy_name = require'nvim-tree.actions.copy-paste'.copy_filename,
   copy_path = require'nvim-tree.actions.copy-paste'.copy_path,