add api.node.expand

doc/nvim-tree-lua.txt

@@ -1470,7 +1470,8 @@ vim |current-directory| behaviour.
       Type: `boolean`, Default: `false`
 
 *nvim-tree.actions.expand_all*
-Configuration for expand_all behaviour.
+Configuration for *nvim-tree-api.tree.expand_all()* and
+*nvim-tree-api.node.expand()*
 
     *nvim-tree.actions.expand_all.max_folder_discovery*
     Limit the number of folders being explored when expanding every folders.
@@ -2278,8 +2279,15 @@ node.buffer.wipe({node}, {opts})            *nvim-tree-api.node.buffer.wipe()*
     Options: ~
       • {force} (boolean) wipe even if buffer is modified, default false
 
+node.expand({node})                              *nvim-tree-api.node.expand()*
+    Recursively expand all nodes under a directory or a file's parent
+    directory.
+
+    Parameters: ~
+      • {node} (Node|nil) file or folder
+
 node.collapse({node}, {opts})                  *nvim-tree-api.node.collapse()*
-    Collapse the tree underneath the node.
+    Collapse the tree under a directory or a file's parent directory.
 
     Parameters: ~
       • {node} (Node|nil) file or folder

lua/nvim-tree/actions/tree/modifiers/collapse.lua

@@ -68,9 +68,8 @@ function M.all(opts)
       keep_buffers = opts,
     }
   end
-  opts = opts or {}
 
-  collapse(nil, opts)
+  collapse(nil, opts or {})
 end
 
 ---@param node Node

lua/nvim-tree/actions/tree/modifiers/expand.lua

@@ -2,6 +2,7 @@ local core = require("nvim-tree.core")
 local Iterator = require("nvim-tree.iterators.node-iterator")
 local notify = require("nvim-tree.notify")
 
+local FileNode = require("nvim-tree.node.file")
 local DirectoryNode = require("nvim-tree.node.directory")
 
 local M = {}
@@ -70,23 +71,38 @@ local function gen_iterator()
   end
 end
 
----Expand the directory node or the root
----@param node Node
-function M.fn(node)
-  local explorer = core.get_explorer()
-  local parent = node:as(DirectoryNode) or explorer
-  if not parent then
+---@param node Node?
+local function expand_node(node)
+  if not node then
     return
   end
 
-  if gen_iterator()(parent) then
+  if gen_iterator()(node) then
     notify.warn("expansion iteration was halted after " .. M.MAX_FOLDER_DISCOVERY .. " discovered folders")
   end
+
+  local explorer = core.get_explorer()
   if explorer then
     explorer.renderer:draw()
   end
 end
 
+---Expand the directory node or the root
+---@param node Node
+function M.all(node)
+  expand_node(node and node:as(DirectoryNode) or core.get_explorer())
+end
+
+---Expand the directory node or parent node
+---@param node Node
+function M.node(node)
+  if not node then
+    return
+  end
+
+  expand_node(node:is(FileNode) and node.parent or node:as(DirectoryNode))
+end
+
 function M.setup(opts)
   M.MAX_FOLDER_DISCOVERY = opts.actions.expand_all.max_folder_discovery
   M.EXCLUDE = to_lookup_table(opts.actions.expand_all.exclude)

lua/nvim-tree/actions/tree/modifiers/init.lua

@@ -1,10 +1,10 @@
 local M = {}
 
 M.collapse = require("nvim-tree.actions.tree.modifiers.collapse")
-M.expand_all = require("nvim-tree.actions.tree.modifiers.expand-all")
+M.expand = require("nvim-tree.actions.tree.modifiers.expand")
 
 function M.setup(opts)
-  M.expand_all.setup(opts)
+  M.expand.setup(opts)
 end
 
 return M

lua/nvim-tree/api.lua

@@ -187,7 +187,7 @@ Api.tree.search_node = wrap(actions.finders.search_node.fn)
 ---@field keep_buffers boolean|nil default false
 
 Api.tree.collapse_all = wrap(actions.tree.modifiers.collapse.all)
-Api.tree.expand_all = wrap_node(actions.tree.modifiers.expand_all.fn)
+Api.tree.expand_all = wrap_node(actions.tree.modifiers.expand.all)
 Api.tree.toggle_enable_filters = wrap_explorer_member("filters", "toggle")
 Api.tree.toggle_gitignore_filter = wrap_explorer_member_args("filters", "toggle", "git_ignored")
 Api.tree.toggle_git_clean_filter = wrap_explorer_member_args("filters", "toggle", "git_clean")
@@ -316,6 +316,7 @@ Api.node.navigate.diagnostics.prev_recursive = wrap_node(actions.moves.item.fn({
 Api.node.navigate.opened.next = wrap_node(actions.moves.item.fn({ where = "next", what = "opened" }))
 Api.node.navigate.opened.prev = wrap_node(actions.moves.item.fn({ where = "prev", what = "opened" }))
 
+Api.node.expand = wrap_node(actions.tree.modifiers.expand.node)
 Api.node.collapse = wrap_node(actions.tree.modifiers.collapse.node)
 
 ---@class ApiNodeDeleteWipeBufferOpts