Document border option and publicize has_code_win

lua/symbols-outline.lua

@@ -375,13 +375,13 @@ function M.focus_outline()
 end
 
 function M.focus_code()
-  if M.state.code_win then
+  if require('symbols-outline.preview').has_code_win() then
     vim.fn.win_gotoid(M.state.code_win)
   end
 end
 
 function M.focus_toggle()
-  if M.view:is_open() and M.state.code_win then
+  if M.view:is_open() and require('symbols-outline.preview').has_code_win() then
     local winid = vim.fn.win_getid()
     if winid == M.state.code_win then
       vim.fn.win_gotoid(M.view.winnr)

lua/symbols-outline/config.lua

@@ -3,12 +3,12 @@ local vim = vim
 local M = {}
 
 M.defaults = {
+  position = 'right',
+  width = 25,
   highlight_hovered_item = true,
   show_guides = true,
-  position = 'right',
   border = 'single',
   relative_width = true,
-  width = 25,
   auto_close = false,
   auto_preview = false,
   open_hover_on_preview = true,

lua/symbols-outline/preview.lua

@@ -24,6 +24,8 @@ local function has_code_win()
   return isBufValid
 end
 
+M.has_code_win = has_code_win
+
 local function get_offset()
   local outline_winnr = so.view.winnr
   local width = 53