feat(view): Floating nvim tree window #1377

doc/nvim-tree-lua.txt

@@ -191,6 +191,16 @@ Subsequent calls to setup will replace the previous configuration.
             -- user mappings go here
           },
         },
+        float = {
+          -- enabling enforces `actions.open_file.quit_on_open`
+          enable = false,
+          -- options passed to nvim_open_win()
+          relative = "editor",
+          row = 1,
+          col = 1,
+          anchor = "NW",
+          border = "rounded",
+        },
       },
       renderer = {
         add_trailing = false,

lua/nvim-tree.lua

@@ -454,6 +454,16 @@ local DEFAULT_OPTS = { -- BEGIN_DEFAULT_OPTS
         -- user mappings go here
       },
     },
+    float = {
+      -- enabling enforces `actions.open_file.quit_on_open`
+      enable = false,
+      -- options passed to nvim_open_win()
+      relative = "editor",
+      row = 1,
+      col = 1,
+      anchor = "NW",
+      border = "rounded",
+    },
   },
   renderer = {
     add_trailing = false,

lua/nvim-tree/actions/node/open-file.lua

@@ -280,7 +280,7 @@ function M.fn(mode, filename)
 end
 
 function M.setup(opts)
-  M.quit_on_open = opts.actions.open_file.quit_on_open
+  M.quit_on_open = opts.actions.open_file.quit_on_open or opts.view.float.enable
   M.resize_window = opts.actions.open_file.resize_window
   if opts.actions.open_file.window_picker.chars then
     opts.actions.open_file.window_picker.chars = tostring(opts.actions.open_file.window_picker.chars):upper()

lua/nvim-tree/view.lua

@@ -42,6 +42,14 @@ M.View = {
       "NormalNC:NvimTreeNormalNC",
     }, ","),
   },
+  floatenable = false,
+  floatopts = {
+    relative = "editor",
+    row = 1,
+    col = 1,
+    anchor = "NW",
+    border = "rounded",
+  },
 }
 
 -- The initial state of a tab
@@ -134,8 +142,12 @@ local function set_window_options_and_buffer()
 end
 
 local function open_window()
-  a.nvim_command "vsp"
-  M.reposition_window()
+  if M.View.floatenable then
+    a.nvim_open_win(0, true, M.View.floatopts)
+  else
+    a.nvim_command "vsp"
+    M.reposition_window()
+  end
   setup_tabpage(a.nvim_get_current_tabpage())
   set_window_options_and_buffer()
 end
@@ -431,6 +443,11 @@ function M.setup(opts)
   M.View.winopts.number = options.number
   M.View.winopts.relativenumber = options.relativenumber
   M.View.winopts.signcolumn = options.signcolumn
+  M.View.floatenable = options.float.enable
+  M.View.floatopts = options.float
+  M.View.floatopts.width = options.width
+  M.View.floatopts.height = options.height
+  M.View.floatopts.enable = nil
   M.on_attach = opts.on_attach
 end