Add disk explorer for windows (#2165)

* Add disk explorer for windows

* Update windisk.vim

* Fix windows support

* add key binding

* add functions for manager disk

* Use SPC f d only in windows os

autoload/SpaceVim/layers/core.vim

@@ -170,6 +170,9 @@ function! SpaceVim#layers#core#config() abort
         \ 'delete-current-buffer-file', 1)
   call SpaceVim#mapping#space#def('nnoremap', ['f', 'F'], 'normal! gf', 'open-cursor-file', 1)
   call SpaceVim#mapping#space#def('nnoremap', ['f', '/'], 'call SpaceVim#plugins#find#open()', 'find-files', 1)
+  if s:SYS.isWindows
+    call SpaceVim#mapping#space#def('nnoremap', ['f', 'd'], 'call SpaceVim#plugins#windisk#open()', 'open-windisk-manager', 1)
+  endif
   if g:spacevim_filemanager ==# 'vimfiler'
     call SpaceVim#mapping#space#def('nnoremap', ['f', 't'], 'VimFiler', 'toggle_file_tree', 1)
     call SpaceVim#mapping#space#def('nnoremap', ['f', 'T'], 'VimFiler -no-toggle', 'show_file_tree', 1)

autoload/SpaceVim/layers/core/statusline.vim

@@ -386,7 +386,8 @@ function! SpaceVim#layers#core#statusline#get(...) abort
           \ . '%#SpaceVim_statusline_b# LayerManager %#SpaceVim_statusline_b_SpaceVim_statusline_c#' . s:lsep
   elseif &filetype ==# 'SpaceVimGitLogPopup'
     return '%#SpaceVim_statusline_a# Git log popup %#SpaceVim_statusline_a_SpaceVim_statusline_b#' . s:lsep
-
+  elseif &filetype ==# 'SpaceVimWinDiskManager'
+    return '%#SpaceVim_statusline_a# WinDisk %#SpaceVim_statusline_a_SpaceVim_statusline_b#' . s:lsep
   elseif &filetype ==# 'SpaceVimTodoManager'
     return '%#SpaceVim_statusline_a# TODO manager %#SpaceVim_statusline_a_SpaceVim_statusline_b#' . s:lsep
 

autoload/SpaceVim/plugins/windisk.vim

@@ -0,0 +1,46 @@
+"=============================================================================
+" windisk.vim --- disk manager for windows
+" Copyright (c) 2016-2017 Wang Shidong & Contributors
+" Author: Wang Shidong < wsdjeg at 163.com >
+" URL: https://spacevim.org
+" License: GPLv3
+"=============================================================================
+
+func! SpaceVim#plugins#windisk#open()
+  let disks = s:get_disks()
+  if !empty(disks)
+    " 1. open plugin buffer
+    noautocmd vsplit __windisk__
+    vertical resize 20
+    let s:disk_buffer_nr = bufnr('%')
+    set ft=SpaceVimWinDiskManager
+    setlocal buftype=nofile bufhidden=wipe nobuflisted nolist noswapfile nowrap cursorline nospell nonu norelativenumber winfixwidth
+    " 2. init buffer option and syntax
+    let lines = disks
+    setlocal modifiable
+    call setline(1, lines)
+    setlocal nomodifiable
+    " 2. updated content
+    " 3. init buffer key bindings
+    nnoremap <buffer><silent> <Cr> :call <SID>open_disk(getline('.'))<cr>
+  else
+    " TODO: print warnning, not sure if it is needed.
+  endif
+endf
+
+func! s:get_disks()
+  return map(filter(range(65, 97), "isdirectory(nr2char(v:val) . ':/')"), 'nr2char(v:val) . ":/"')
+endf
+
+
+function! s:open_disk(d) abort
+  call s:close_disk_buffer()
+  exe 'VimFiler -no-toggle ' . a:d
+  doautocmd WinEnter
+endfunction
+
+
+function! s:close_disk_buffer() abort
+  exe 'bd ' . s:disk_buffer_nr
+endfunction
+