Refractor filetype and add disable_text option

README.md

@@ -324,7 +324,8 @@ sections = {
   lualine_a = {
     {
       'filetype',
-      colored = true -- displays filetype icon in color if set to `true`
+      colored = true, -- displays filetype icon in color if set to `true
+      disable_text = false -- Display only icon for filetype
     }
   }
 }

doc/lualine.txt

@@ -255,10 +255,12 @@ Component specific local options~
     lualine_a = {
       {
         'filetype',
-        colored = true -- displays filetype icon in color if set to `true`
+        colored = true, -- displays filetype icon in color if set to `true`
+        disable_text = false -- Display only icon for filetype
       }
     }
   }
+<
 
 * diff~
 >
@@ -337,4 +339,4 @@ You can disable lualine for specific filetypes
 
 `options = {disabled_filetypes = {'lua'}}`
 ------------------------------------------------------------------------------
-vim:tw=80:sw=4:ts=8:noet:ft=help:norl:et:
+vim:tw=80:sw=4:ts=8:et:ft=help:norl:et:

lua/lualine/components/filetype.lua

@@ -5,20 +5,31 @@ local utils = require('lualine.utils.utils')
 
 local FileType = require('lualine.component'):new()
 
-FileType.update_status = function(self)
-  local data = vim.bo.filetype
-  if #data > 0 then
+function FileType:new(options, child)
+  local new_instance = self._parent:new(options, child or FileType)
+  if new_instance.options.colored == nil then
+    new_instance.options.colored = true
+  end
+  if new_instance.options.disable_text == nil then
+    new_instance.options.disable_text = false
+  end
+  return new_instance
+end
+
+function FileType.update_status() return vim.bo.filetype or '' end
+
+function FileType:apply_icon()
+  if not self.options.icons_enabled then return end
+
+  local icon, icon_highlight_group
   local ok, devicons = pcall(require, 'nvim-web-devicons')
   if ok then
     local f_name, f_extension = vim.fn.expand('%:t'), vim.fn.expand('%:e')
-      local icon, icon_highlight_group = devicons.get_icon(f_name, f_extension)
-      self.options.icon = icon
+    icon, icon_highlight_group = devicons.get_icon(f_name, f_extension)
 
-      if self.options.icon and
-          (self.options.colored or self.options.colored == nil) then
-        self.options.colored = true
-
-        local highlight_color = utils.extract_highlight_colors(icon_highlight_group, 'fg')
+    if icon and self.options.colored then
+      local highlight_color = utils.extract_highlight_colors(
+                                  icon_highlight_group, 'fg')
       local is_focused = vim.g.statusline_winid == vim.fn.win_getid()
       local default_highlight = highlight.format_highlight(is_focused,
                                                            self.options.self
@@ -31,19 +42,21 @@ FileType.update_status = function(self)
                              self.options)
       end
 
-        self.options.icon =
-            highlight.component_format_highlight(icon_highlight) ..
-                self.options.icon .. default_highlight
+      icon = highlight.component_format_highlight(icon_highlight) .. icon ..
+                 default_highlight
     end
   else
     ok = vim.fn.exists('*WebDevIconsGetFileTypeSymbol')
-      if ok ~= 0 then
-        self.options.icon = vim.fn.WebDevIconsGetFileTypeSymbol()
+    if ok ~= 0 then icon = vim.fn.WebDevIconsGetFileTypeSymbol() end
   end
+
+  if not icon then return end
+
+  if self.options.disable_text then
+    self.status = icon
+  else
+    self.status = icon .. ' ' .. self.status
   end
-    return data
-  end
-  return ''
 end
 
 return FileType

lua/tests/spec/component_spec.lua

@@ -277,16 +277,56 @@ describe('Filetype component', function()
 
     local opts = build_component_opts({
       component_separators = {'', ''},
-      padding = 0
+      padding = 0,
     })
     assert_component('filetype', opts, '%#MyCompHl_normal#*%#lualine_c_normal# lua')
     assert.stub(utils.extract_highlight_colors).was_called_with('test_highlight_group', 'fg')
-    opts.icon = '*'
     assert.stub(hl.create_component_highlight_group).was_called_with(
       {fg = '#000'}, 'test_highlight_group', opts
     )
     hl.create_component_highlight_group:revert()
     utils.extract_highlight_colors:revert()
+    package.loaded['nvim-web-devicons'] = nil
+  end)
+
+  it('Doesn\'t color when colored is false', function()
+    package.loaded['nvim-web-devicons'] = {
+      get_icon = function()
+        return '*', 'test_highlight_group'
+      end
+    }
+    local hl = require 'lualine.highlight'
+    local utils = require 'lualine.utils.utils'
+    stub(hl, 'create_component_highlight_group')
+    stub(utils, 'extract_highlight_colors')
+    hl.create_component_highlight_group.returns('MyCompHl')
+    utils.extract_highlight_colors.returns('#000')
+    local opts = build_component_opts({
+      component_separators = {'', ''},
+      padding = 0,
+      colored = false,
+    })
+    assert_component('filetype', opts, '* lua')
+    hl.create_component_highlight_group:revert()
+    utils.extract_highlight_colors:revert()
+    package.loaded['nvim-web-devicons'] = nil
+  end)
+
+  it('displays only icon when disable_text is true', function()
+    package.loaded['nvim-web-devicons'] = {
+      get_icon = function()
+        return '*', 'test_highlight_group'
+      end
+    }
+
+    local opts = build_component_opts({
+      component_separators = {'', ''},
+      padding = 0,
+      colored = false,
+      disable_text = true,
+    })
+    assert_component('filetype', opts, '*')
+    package.loaded['nvim-web-devicons'] = nil
   end)
 end)