From 62b53c854ce0613e428145dba3e5add7eb8c739e Mon Sep 17 00:00:00 2001
From: shadmansaleh <shadmansaleh3@gmail.com>
Date: Tue, 3 Aug 2021 12:08:17 +0600
Subject: [PATCH] feat: Allow extensions to spwcify inactive sections too

---
 lua/lualine/init.lua         | 24 ++++++++++++++----------
 lua/lualine/utils/loader.lua |  6 ++++++
 2 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/lua/lualine/init.lua b/lua/lualine/init.lua
index 64cfd8f..c98b18e 100644
--- a/lua/lualine/init.lua
+++ b/lua/lualine/init.lua
@@ -129,12 +129,15 @@ local function statusline(sections, is_focused)
 end
 
 -- check if any extension matches the filetype and return proper sections
-local function get_extension_sections()
+local function get_extension_sections(current_ft, is_focused)
   for _, extension in ipairs(config.extensions) do
     for _, filetype in ipairs(extension.filetypes) do
-      local current_ft = vim.api.nvim_buf_get_option(
-                             vim.fn.winbufnr(vim.g.statusline_winid), 'filetype')
-      if current_ft == filetype then return extension.sections end
+      if current_ft == filetype then
+        if is_focused == false and extension.inactive_sections then
+          return extension.inactive_sections
+        end
+        return extension.sections
+      end
     end
   end
   return nil
@@ -144,23 +147,24 @@ local function status_dispatch()
   -- disable on specific filetypes
   local current_ft = vim.api.nvim_buf_get_option(
                          vim.fn.winbufnr(vim.g.statusline_winid), 'filetype')
+  local is_focused = vim.g.statusline_winid == vim.fn.win_getid()
   for _, ft in pairs(config.options.disabled_filetypes) do
     if ft == current_ft then
       vim.wo.statusline = ''
       return ''
     end
   end
-  local extension_sections = get_extension_sections()
-  if vim.g.statusline_winid == vim.fn.win_getid() then
+  local extension_sections = get_extension_sections(current_ft, is_focused)
+  if is_focused then
     if extension_sections ~= nil then
-      return statusline(extension_sections, true)
+      return statusline(extension_sections, is_focused)
     end
-    return statusline(config.sections, true)
+    return statusline(config.sections, is_focused)
   else
     if extension_sections ~= nil then
-      return statusline(extension_sections, false)
+      return statusline(extension_sections, is_focused)
     end
-    return statusline(config.inactive_sections, false)
+    return statusline(config.inactive_sections, is_focused)
   end
 end
 
diff --git a/lua/lualine/utils/loader.lua b/lua/lualine/utils/loader.lua
index a46c927..e87eddc 100644
--- a/lua/lualine/utils/loader.lua
+++ b/lua/lualine/utils/loader.lua
@@ -49,9 +49,15 @@ local function load_extensions(config)
     if type(extension) == 'string' then
       local local_extension = require('lualine.extensions.' .. extension)
       load_sections(local_extension.sections, config.options)
+      if local_extension.inactive_sections then
+        load_sections(local_extension.inactive_sections, config.options)
+      end
       config.extensions[index] = local_extension
     elseif type(extension) == 'table' then
       load_sections(extension.sections, config.options)
+      if extension.inactive_sections then
+        load_sections(extension.inactive_sections, config.options)
+      end
       config.extensions[index] = extension
     end
   end