From 4648ed49f061e1535e2f80def9e1101d69d7d435 Mon Sep 17 00:00:00 2001
From: doot <gugegby@gmail.com>
Date: Sat, 24 Dec 2022 19:13:23 +0800
Subject: [PATCH] fix(#1836):add view.debounce_delay to avoid some unnecessary
 explorer reloads

---
 doc/nvim-tree-lua.txt  | 6 ++++++
 lua/nvim-tree.lua      | 9 +++++++--
 lua/nvim-tree/view.lua | 1 +
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/doc/nvim-tree-lua.txt b/doc/nvim-tree-lua.txt
index 9c4b33f3ca7..95f9f55f80f 100644
--- a/doc/nvim-tree-lua.txt
+++ b/doc/nvim-tree-lua.txt
@@ -190,6 +190,7 @@ Subsequent calls to setup will replace the previous configuration.
       view = {
         adaptive_size = false,
         centralize_selection = false,
+        debounce_delay = 15,
         width = 30,
         hide_root_folder = false,
         side = "left",
@@ -680,6 +681,11 @@ Window / buffer setup.
     initially centralized, see |zz|.
       Type: `boolean`, Default: `false`
 
+    *nvim-tree.view.debounce_delay*
+    Idle milliseconds between BufReadPost, BufUnload and update.
+    The last BufReadPost or BufUnload will be focused, others are discarded.
+      Type: `number`, Default: `15` (ms)
+
     *nvim-tree.view.hide_root_folder*
     Hide the path of the current working directory on top of the tree.
       Type: `boolean`, Default: `false`
diff --git a/lua/nvim-tree.lua b/lua/nvim-tree.lua
index 63863a3dd90..cd616b12543 100644
--- a/lua/nvim-tree.lua
+++ b/lua/nvim-tree.lua
@@ -368,7 +368,9 @@ local function setup_autocommands(opts)
         (filters.config.filter_no_buffer or renderer.config.highlight_opened_files ~= "none")
         and vim.bo[data.buf].buftype == ""
       then
-        reloaders.reload_explorer()
+        utils.debounce("BufReadPost:filter_buffer", view.debounce_delay, function()
+          reloaders.reload_explorer()
+        end)
       end
     end,
   })
@@ -380,7 +382,9 @@ local function setup_autocommands(opts)
         (filters.config.filter_no_buffer or renderer.config.highlight_opened_files ~= "none")
         and vim.bo[data.buf].buftype == ""
       then
-        reloaders.reload_explorer(nil, data.buf)
+        utils.debounce("BufUnload:filter_buffer", view.debounce_delay, function()
+          reloaders.reload_explorer(nil, data.buf)
+        end)
       end
     end,
   })
@@ -499,6 +503,7 @@ local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS
   view = {
     adaptive_size = false,
     centralize_selection = false,
+    debounce_delay = 15,
     width = 30,
     hide_root_folder = false,
     side = "left",
diff --git a/lua/nvim-tree/view.lua b/lua/nvim-tree/view.lua
index f843cb65f40..eccdd1e3c65 100644
--- a/lua/nvim-tree/view.lua
+++ b/lua/nvim-tree/view.lua
@@ -483,6 +483,7 @@ function M.setup(opts)
   local options = opts.view or {}
   M.View.adaptive_size = options.adaptive_size
   M.View.centralize_selection = options.centralize_selection
+  M.View.debounce_delay = options.debounce_delay
   M.View.side = (options.side == "right") and "right" or "left"
   M.View.width = options.width
   M.View.height = options.height