feat: add support for global statusline (#613)

README.md

@@ -123,6 +123,7 @@ require('lualine').setup {
     section_separators = { left = '', right = ''},
     disabled_filetypes = {},
     always_divide_middle = true,
+    globalstatus = false,
   },
   sections = {
     lualine_a = {'mode'},
@@ -338,6 +339,9 @@ options = {
   always_divide_middle = true, -- When set to true, left sections i.e. 'a','b' and 'c'
                                -- can't take over the entire statusline even
                                -- if neither of 'x', 'y' or 'z' are present.
+  globalstatus = false,        -- enable global statusline (have a single statusline
+                               -- at bottom of neovim instead of one for  every window).
+                               -- This feature is only available in neovim 0.7 and higher.
 }
 ```
 

doc/lualine.txt

@@ -107,6 +107,7 @@ For more information, check out `:help lua-heredoc`.
         section_separators = { left = '', right = ''},
         disabled_filetypes = {},
         always_divide_middle = true,
+        globalstatus = false,
       },
       sections = {
         lualine_a = {'mode'},
@@ -348,6 +349,9 @@ in component.
       always_divide_middle = true, -- When set to true, left sections i.e. 'a','b' and 'c'
                                    -- can't take over the entire statusline even
                                    -- if neither of 'x', 'y' or 'z' are present.
+      globalstatus = false,        -- enable global statusline (have a single statusline
+                                   -- at bottom of neovim instead of one for  every window).
+                                   -- This feature is only available in neovim 0.7 and higher.
     }
 <
 

lua/lualine.lua

@@ -269,7 +269,7 @@ local function set_statusline()
   if next(config.sections) ~= nil or next(config.inactive_sections) ~= nil then
     vim.cmd('autocmd lualine VimResized * redrawstatus')
     vim.go.statusline = "%{%v:lua.require'lualine'.statusline()%}"
-    vim.go.laststatus = 2
+    vim.go.laststatus = config.options.globalstatus and 3 or 2
   elseif vim.go.statusline == "%{%v:lua.require'lualine'.statusline()%}" then
     vim.go.statusline = nil
     vim.go.laststatus = 2
@@ -317,11 +317,11 @@ end
 --- sets &last_status tl 2
 ---@param user_config table table
 local function setup(user_config)
-  config = modules.config_module.apply_configuration(user_config)
   if package.loaded['lualine.utils.notices'] then
     -- When notices module is not loaded there are no notices to clear.
     modules.utils_notices.clear_notices()
   end
+  config = modules.config_module.apply_configuration(user_config)
   vim.cmd([[augroup lualine | exe "autocmd!" | augroup END]])
   setup_theme()
   -- load components & extensions

lua/lualine/config.lua

@@ -1,6 +1,10 @@
 -- Copyright (c) 2020-2021 hoob3rt
 -- MIT license, see LICENSE for more details.
+local require = require('lualine_require').require
 local utils = require('lualine.utils.utils')
+local modules = require('lualine_require').lazy_require {
+  utils_notices = 'lualine.utils.notices',
+}
 
 local config = {
   options = {
@@ -10,6 +14,7 @@ local config = {
     section_separators = { left = '', right = '' },
     disabled_filetypes = {},
     always_divide_middle = true,
+    globalstatus = false,
   },
   sections = {
     lualine_a = { 'mode' },
@@ -62,6 +67,12 @@ local function apply_configuration(config_table)
       config[section_group_name][section_name] = utils.deepcopy(section)
     end
   end
+  if config_table.options and config_table.options.globalstatus and vim.fn.has('nvim-0.7') == 0 then
+    modules.utils_notices.add_notice(
+      '### Options.globalstatus\nSorry `globalstatus` option can only be used in neovim 0.7 or higher.\n'
+    )
+    config_table.options.globalstatus = false
+  end
   parse_sections('options')
   parse_sections('sections')
   parse_sections('inactive_sections')

lua/tests/spec/lualine_spec.lua

@@ -17,6 +17,7 @@ describe('Lualine', function()
         section_separators = { left = '', right = '' },
         disabled_filetypes = {},
         always_divide_middle = true,
+        globalstatus = false,
       },
       sections = {
         lualine_a = { 'mode' },