Display mode in statusline like in some airline theme

autoload/SpaceVim.vim

@@ -155,6 +155,13 @@ let g:spacevim_statusline_inactive_separator = 'arrow'
 " Enable/Disable unicode symbols in statusline
 let g:spacevim_statusline_unicode_symbols = 1
 ""
+" Enable/Disable display mode. Default is 0, mode will be
+" displayed in statusline. To enable this feature:
+" >
+"   let g:spacevim_enable_statusline_display_mode = 1
+" <
+let g:spacevim_enable_statusline_display_mode     = 0
+""
 " Enable/Disable cursorcolumn. Default is 0, cursorcolumn will be
 " highlighted in normal mode. To enable this feature:
 " >

autoload/SpaceVim/layers/core/statusline.vim

@@ -147,7 +147,9 @@ function! s:winnr(...) abort
       return ' ' . s:MESSLETTERS.circled_num(winnr(), g:spacevim_windows_index_type) . ' '
     endif
   else
-    if g:spacevim_windows_index_type == 3
+    if g:spacevim_enable_statusline_display_mode == 1
+      return '%{SpaceVim#layers#core#statusline#mode(mode())} %{SpaceVim#layers#core#statusline#mode_text(mode())}' . s:MESSLETTERS.circled_num(winnr(), g:spacevim_windows_index_type) . ' '
+    elseif g:spacevim_windows_index_type == 3
       return '%{SpaceVim#layers#core#statusline#mode(mode())} ' . winnr() . ' '
     else
       return '%{SpaceVim#layers#core#statusline#mode(mode())} ' . s:MESSLETTERS.circled_num(winnr(), g:spacevim_windows_index_type) . ' '
@@ -468,6 +470,20 @@ function! SpaceVim#layers#core#statusline#mode(mode)
   return ''
 endfunction
 
+function! SpaceVim#layers#core#statusline#mode_text(mode)
+  let t = s:colors_template
+  if a:mode == 'n'
+    return 'NORMAL '
+  elseif a:mode == 'i'
+    return 'INSERT '
+  elseif a:mode == 'R'
+    return 'REPLACE '
+  elseif a:mode == 'v' || a:mode == 'V' || a:mode == '^V' || a:mode == 's' || a:mode == 'S' || a:mode == '^S'
+    return 'VISUAL '
+  endif
+  return ' '
+endfunction
+
 function! SpaceVim#layers#core#statusline#denite_mode()
   let t = s:colors_template
   let dmode = split(denite#get_status_mode())[1]

doc/SpaceVim.txt

@@ -313,6 +313,9 @@ Set SpaceVim windows index type, default is 0.
                                      *g:spacevim_enable_tabline_filetype_icon*
 Enable/Disable tabline filetype icon. default is 0.
 
+                                   *g:spacevim_enable_statusline_display_mode*
+Enable/Disable statusline display mode. default is 0.
+
                                         *g:spacevim_enable_os_fileformat_icon*
 Enable/Disable os fileformat icon. default is 0.
 

docs/documentation.md

@@ -396,6 +396,7 @@ The statusline and tabline are heavily customized with the following capabilitie
 The `core#statusline` layer provide a heavily customized powerline with the following capabilities:, It is inspired by spacemacs's mode-line.
 
 - show the window number
+- show the current mode
 - color code for current state
 - show the number of search results
 - toggle syntax checking info

mode/basic.vim

@@ -4,5 +4,6 @@ let g:spacevim_statusline_separator = 'nil'
 let g:spacevim_statusline_inactive_separator = 'bar'
 let g:spacevim_buffer_index_type = 4
 let g:spacevim_enable_tabline_filetype_icon = 0
+let g:spacevim_enable_statusline_display_mode = 0
 
 

mode/dark_powered.vim

@@ -23,6 +23,7 @@ let g:spacevim_enable_vimfiler_welcome = 1
 let g:spacevim_enable_debug = 1
 let g:deoplete#auto_complete_delay = 150
 let g:spacevim_enable_tabline_filetype_icon = 1
+let g:spacevim_enable_statusline_display_mode = 0
 let g:spacevim_enable_os_fileformat_icon = 1
 let g:spacevim_buffer_index_type = 1
 let g:neomake_vim_enabled_makers = []