feat: add highlight groups (#235)

Author: jaeheonji

doc/neo-tree.txt

@@ -695,6 +695,9 @@ NeoTreeIndentMarker       The style of indentation markers (guides). By default,
 NeoTreeExpander           Used for collapsed/expanded icons.
 NeoTreeNormal             |hl-Normal| override in Neo-tree window.
 NeoTreeNormalNC           |hi-NormalNC| override in Neo-tree window.
+NeoTreeStatusLine         |hl-StatusLine| override in Neo-tree window.
+NeoTreeStatusLineNC       |hl-StatusLineNC| override in Neo-tree window.
+NeoTreeVertSplit          |hl-VertSplit| override in Neo-tree window.
 NeoTreeRootName           The name of the root node.
 NeoTreeSymbolicLinkTarget Symbolic link target.
 NeoTreeTitleBar           Used for the title bar of pop-ups, when the border-style

lua/neo-tree/setup/init.lua

@@ -6,7 +6,7 @@ local log = require("neo-tree.log")
 local file_nesting = require("neo-tree.sources.common.file-nesting")
 local highlights = require("neo-tree.ui.highlights")
 local manager = require("neo-tree.sources.manager")
-local netrw   = require("neo-tree.setup.netrw")
+local netrw = require("neo-tree.setup.netrw")
 
 -- If you add a new source, you need to add it to the sources table.
 -- Each source should have a defaults module that contains the default values
@@ -69,7 +69,7 @@ M.buffer_enter_event = function()
     vim.cmd([[
     setlocal cursorline
     setlocal nowrap
-    setlocal winhighlight=Normal:NeoTreeNormal,NormalNC:NeoTreeNormalNC,CursorLine:NeoTreeCursorLine,FloatBorder:NeoTreeFloatBorder
+    setlocal winhighlight=Normal:NeoTreeNormal,NormalNC:NeoTreeNormalNC,CursorLine:NeoTreeCursorLine,FloatBorder:NeoTreeFloatBorder,StatusLine:NeoTreeStatusLine,StatusLineNC:NeoTreeStatusLineNC,VertSplit:NeoTreeVertSplit
     setlocal nolist nospell nonumber norelativenumber
     ]])
     events.fire_event(events.NEO_TREE_BUFFER_ENTER)
@@ -94,7 +94,6 @@ M.buffer_enter_event = function()
   end
   last_buffer_enter_filetype = vim.bo.filetype
 
-
   -- there is nothing more we want to do with floating windows
   if utils.is_floating() then
     return

lua/neo-tree/ui/highlights.lua

@@ -29,6 +29,9 @@ M.INDENT_MARKER = "NeoTreeIndentMarker"
 M.MODIFIED = "NeoTreeModified"
 M.NORMAL = "NeoTreeNormal"
 M.NORMALNC = "NeoTreeNormalNC"
+M.STATUS_LINE = "NeoTreeStatusLine"
+M.STATUS_LINE_NC = "NeoTreeStatusLineNC"
+M.VERTSPLIT = "NeoTreeVertSplit"
 M.ROOT_NAME = "NeoTreeRootName"
 M.SYMBOLIC_LINK_TARGET = "NeoTreeSymbolicLinkTarget"
 M.TITLE_BAR = "NeoTreeTitleBar"
@@ -184,6 +187,11 @@ M.setup = function()
   local normal_hl = create_highlight_group(M.NORMAL, { "Normal" })
   local normalnc_hl = create_highlight_group(M.NORMALNC, { "NormalNC", M.NORMAL })
 
+  create_highlight_group(M.STATUS_LINE, { "StatusLine" })
+  create_highlight_group(M.STATUS_LINE_NC, { "StatusLineNC" })
+
+  create_highlight_group(M.VERTSPLIT, { "VertSplit" })
+
   local float_border_hl = create_highlight_group(
     M.FLOAT_BORDER,
     { "FloatBorder" },