prototype with autocmd

Author: chomosuke

lua/nvim-tree.lua

@@ -468,6 +468,16 @@ local function setup_autocommands(opts)
       end,
     })
   end
+
+  if opts.modified.enable then
+    create_nvim_tree_autocmd("BufModifiedSet", {
+      callback = function()
+        utils.debounce("BufModifiedSet:modified_files", opts.modified.debounce_delay, function()
+          reloaders.reload_explorer()
+        end)
+      end,
+    })
+  end
 end
 
 local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS

lua/nvim-tree/renderer/builder.lua

@@ -68,6 +68,13 @@ function Builder:configure_git_icons_placement(where)
   return self
 end
 
+function Builder:configure_modified(modified_icon, modified_placement, modified)
+  self.modified = modified
+  self.modified.icon = modified_icon
+  self.modified.placement = modified_placement
+  return self
+end
+
 function Builder:configure_symlink_destination(show)
   self.symlink_destination = show
   return self
@@ -206,15 +213,19 @@ function Builder:_highlight_opened_files(node, offset, icon_length, git_icons_le
   self:_insert_highlight("NvimTreeOpenedFile", from, to)
 end
 
-function Builder:_build_file(node, padding, git_highlight, git_icons_tbl, unloaded_bufnr)
+function Builder:_build_file(node, padding, git_highlight, git_icons_tbl, unloaded_bufnr, modified)
   local offset = string.len(padding)
 
   local icon = self:_build_file_icon(node, offset)
 
   local git_icons_starts_at = offset + #icon + (self.is_git_after and #node.name + 1 or 0)
   local git_icons = self:_unwrap_git_data(git_icons_tbl, git_icons_starts_at)
 
-  self:_insert_line(self:_format_line(padding .. icon, node.name, git_icons))
+  local name = node.name
+  if modified then
+    name = name .. self.modified.icon
+  end
+  self:_insert_line(self:_format_line(padding .. icon, name, git_icons))
 
   local git_icons_length = self.is_git_after and 0 or #git_icons
   local col_start = offset + #icon + git_icons_length
@@ -263,6 +274,8 @@ function Builder:_build_line(node, idx, num_children, unloaded_bufnr)
     end
   end
 
+  local modified = vim.fn.bufloaded(node.absolute_path) > 0 and vim.fn.getbufinfo(node.absolute_path)[1].changed == 1
+
   local is_folder = node.nodes ~= nil
   local is_symlink = node.link_to ~= nil
 
@@ -271,7 +284,7 @@ function Builder:_build_line(node, idx, num_children, unloaded_bufnr)
   elseif is_symlink then
     self:_build_symlink(node, padding, git_highlight, git_icons_tbl)
   else
-    self:_build_file(node, padding, git_highlight, git_icons_tbl, unloaded_bufnr)
+    self:_build_file(node, padding, git_highlight, git_icons_tbl, unloaded_bufnr, modified)
   end
   self.index = self.index + 1
 

lua/nvim-tree/renderer/init.lua

@@ -70,6 +70,7 @@ function M.draw(unloaded_bufnr)
       :configure_opened_file_highlighting(M.config.highlight_opened_files)
       :configure_git_icons_padding(M.config.icons.padding)
       :configure_git_icons_placement(M.config.icons.git_placement)
+      :configure_modified(M.config.icons.modified, M.config.icons.modified_placement, M.config.modified)
       :configure_symlink_destination(M.config.symlink_destination)
       :configure_filter(live_filter.filter, live_filter.prefix)
       :build_header(view.is_root_folder_visible(core.get_cwd()))
@@ -100,6 +101,7 @@ end
 
 function M.setup(opts)
   M.config = opts.renderer
+  M.config.modified = opts.modified
 
   _padding.setup(opts)
   full_name.setup(opts)