Add sidebar (#2016)

autoload/SpaceVim/layers/ui.vim

@@ -43,7 +43,13 @@ function! SpaceVim#layers#ui#config() abort
         \ ]
   let g:signify_disable_by_default = 0
   let g:signify_line_highlight = 0
+
+  if s:enable_sidebar
+    noremap <silent> <F2> :call SpaceVim#plugins#sidebar#toggle()<CR>
+  else
     noremap <silent> <F2> :TagbarToggle<CR>
+  endif
+
   if !empty(g:spacevim_windows_smartclose)
     call SpaceVim#mapping#def('nnoremap <silent>', g:spacevim_windows_smartclose, ':<C-u>call zvim#util#SmartClose()<cr>',
           \ 'Smart close windows',
@@ -292,3 +298,13 @@ function! s:toggle_background()
         set background=dark
     endif
 endfunction
+
+let s:enable_sidebar = 0
+
+function! SpaceVim#layers#ui#set_variable(var) abort
+
+  let s:enable_sidebar = get(a:var,
+        \ 'enable_sidebar',
+        \ 0)
+
+endfunction

autoload/SpaceVim/plugins/sidebar.vim

@@ -0,0 +1,34 @@
+"=============================================================================
+" sidebar.vim --- sidebar manager for SpaceVim
+" Copyright (c) 2016-2017 Wang Shidong & Contributors
+" Author: Wang Shidong < wsdjeg at 163.com >
+" URL: https://spacevim.org
+" License: GPLv3
+"=============================================================================
+
+" init option:
+" width: sidebar_width
+" direction: sidebar_direction
+
+
+function! SpaceVim#plugins#sidebar#open(...) abort
+  TagbarOpen
+  wincmd p
+  nnoremap <buffer><silent> q :call SpaceVim#plugins#sidebar#close()<cr>
+  split
+  wincmd p
+  wincmd p
+  VimFiler -no-split
+  nnoremap <buffer><silent> q :call SpaceVim#plugins#sidebar#close()<cr>
+endfunction
+
+
+function! SpaceVim#plugins#sidebar#toggle() abort
+  call SpaceVim#plugins#sidebar#open()
+endfunction
+
+
+function! SpaceVim#plugins#sidebar#close() abort
+  TagbarClose
+  VimFiler
+endfunction

config/plugins/tagbar.vim

@@ -7,3 +7,4 @@ endif
 let g:tagbar_sort = get(g:, 'tagbar_sort', 0)
 let g:tagbar_compact = get(g:, 'tagbar_compact', 1)
 let g:tagbar_map_showproto = get(g:, 'tagbar_map_showproto', '')
+let g:tagbar_iconchars = ['▶', '▼']

config/plugins/vimfiler.vim

@@ -6,8 +6,8 @@ let g:vimfiler_as_default_explorer = get(g:, 'vimfiler_as_default_explorer', 1)
 let g:vimfiler_restore_alternate_file = get(g:, 'vimfiler_restore_alternate_file', 1)
 let g:vimfiler_tree_indentation = get(g:, 'vimfiler_tree_indentation', 1)
 let g:vimfiler_tree_leaf_icon = get(g:, 'vimfiler_tree_leaf_icon', '')
-let g:vimfiler_tree_opened_icon = get(g:, 'vimfiler_tree_opened_icon', '-')
-let g:vimfiler_tree_closed_icon = get(g:, 'vimfiler_tree_closed_icon', '+')
+let g:vimfiler_tree_opened_icon = get(g:, 'vimfiler_tree_opened_icon', '')
+let g:vimfiler_tree_closed_icon = get(g:, 'vimfiler_tree_closed_icon', '')
 let g:vimfiler_file_icon = get(g:, 'vimfiler_file_icon', '')
 let g:vimfiler_readonly_file_icon = get(g:, 'vimfiler_readonly_file_icon', '*')
 let g:vimfiler_marked_file_icon = get(g:, 'vimfiler_marked_file_icon', '√')

doc/SpaceVim.txt

@@ -38,9 +38,10 @@ CONTENTS                                                   *SpaceVim-contents*
       18. plugin_manager_processes.|SpaceVim-options-plugin_manager_processes|
       19. realtime_leader_guide.......|SpaceVim-options-realtime_leader_guide|
       20. relativenumber.....................|SpaceVim-options-relativenumber|
-      21. sidebar_width.......................|SpaceVim-options-sidebar_width|
-      22. snippet_engine.....................|SpaceVim-options-snippet_engine|
-      23. windows_leader.....................|SpaceVim-options-windows_leader|
+      21. retry_cnt...............................|SpaceVim-options-retry_cnt|
+      22. sidebar_width.......................|SpaceVim-options-sidebar_width|
+      23. snippet_engine.....................|SpaceVim-options-snippet_engine|
+      24. windows_leader.....................|SpaceVim-options-windows_leader|
   3. Configuration...........................................|SpaceVim-config|
   4. Commands..............................................|SpaceVim-commands|
   5. Functions............................................|SpaceVim-functions|
@@ -277,6 +278,15 @@ Enable/Disable relativenumber, by default it is enabled.
   relativenumber = true
 <
 
+==============================================================================
+RETRY_CNT                                         *SpaceVim-options-retry_cnt*
+
+Set the number of retries for SpaceVim Update when failed. Default is 3. Set
+to 0 to disable this feature, or you can set to another number.
+>
+  update_retry_cnt = 3
+<
+
 ==============================================================================
 SIDEBAR_WIDTH                                 *SpaceVim-options-sidebar_width*
 
@@ -729,6 +739,13 @@ Enable/Disable lint on the fly feature of SpaceVim's maker. Default is 0.
   let g:spacevim_lint_on_the_fly = 0
 <
 
+                                                 *g:spacevim_update_retry_cnt*
+Set the number of retries for SpaceVim Update when failed. Default is 3. Set
+to 0 to disable this feature, or you can set to another number.
+>
+  let g:spacevim_update_retry_cnt = 3
+<
+
                                           *g:spacevim_enable_vimfiler_welcome*
 Enable/Disable vimfiler in the welcome windows. Default is 1. This will cause
 vim to start up slowly if there are too many files in the current directory.

docs/layers/ui.md

@@ -10,6 +10,7 @@ description: "Awesome UI layer for SpaceVim, provide IDE-like UI for neovim and
 - [Description](#description)
 - [Install](#install)
 - [Plugins](#plugins)
+- [Tips](#tips)
 
 <!-- vim-markdown-toc -->
 
@@ -42,3 +43,10 @@ SpaceVim provide default statusline and tabline plugin which are provided by `co
   enable = false
 ```
 
+Use sidebar to manager file tree and outline:
+
+```toml
+[[layers]]
+  name = "ui"
+  enable_sidebar = true
+```