feat(event): add WillRenameNode (#1821)

Author: antosha417

lua/nvim-tree/actions/fs/copy-paste.lua

@@ -184,6 +184,7 @@ local function do_cut(source, destination)
     return true
   end
 
+  events._dispatch_will_rename_node(source, destination)
   local success, errmsg = vim.loop.fs_rename(source, destination)
   if not success then
     log.line("copy_paste", "do_cut fs_rename failed '%s'", errmsg)

lua/nvim-tree/actions/fs/rename-file.lua

@@ -15,6 +15,7 @@ function M.rename(node, to)
     return
   end
 
+  events._dispatch_will_rename_node(node.absolute_path, to)
   local success, err = vim.loop.fs_rename(node.absolute_path, to)
   if not success then
     return notify.warn(err_fmt(node.absolute_path, to, err))

lua/nvim-tree/events.lua

@@ -6,6 +6,7 @@ local global_handlers = {}
 
 M.Event = {
   Ready = "Ready",
+  WillRenameNode = "WillRenameNode",
   NodeRenamed = "NodeRenamed",
   TreeOpen = "TreeOpen",
   TreeClose = "TreeClose",
@@ -40,6 +41,11 @@ function M._dispatch_ready()
   dispatch(M.Event.Ready)
 end
 
+--@private
+function M._dispatch_will_rename_node(old_name, new_name)
+  dispatch(M.Event.WillRenameNode, { old_name = old_name, new_name = new_name })
+end
+
 --@private
 function M._dispatch_node_renamed(old_name, new_name)
   dispatch(M.Event.NodeRenamed, { old_name = old_name, new_name = new_name })