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" MIT License. Copyright (c) 2013-2018 Bailey Ling et al.
" vim: et ts=2 sts=2 sw=2
scriptencoding utf-8
let s:spc = g:airline_symbols.space
let s:current_bufnr = -1
let s:current_modified = 0
let s:current_tabline = ''
let s:current_visible_buffers = []
let s:number_map = {
\ '0': '⁰',
\ '1': '¹',
\ '2': '²',
\ '3': '³',
\ '4': '⁴',
\ '5': '⁵',
\ '6': '⁶',
\ '7': '⁷',
\ '8': '⁸',
\ '9': '⁹'
\ }
let s:number_map = &encoding == 'utf-8'
\ ? get(g:, 'airline#extensions#tabline#buffer_idx_format', s:number_map)
\ : {}
function! airline#extensions#tabline#buffers#off()
augroup airline_tabline_buffers
autocmd!
augroup END
endfunction
function! airline#extensions#tabline#buffers#on()
augroup airline_tabline_buffers
autocmd!
autocmd BufDelete * call airline#extensions#tabline#buflist#clean()
autocmd User BufMRUChange call airline#extensions#tabline#buflist#clean()
augroup END
endfunction
function! airline#extensions#tabline#buffers#invalidate()
let s:current_bufnr = -1
endfunction
function! airline#extensions#tabline#buffers#get()
try
call <sid>map_keys()
catch
" no-op
endtry
let cur = bufnr('%')
if cur == s:current_bufnr && &columns == s:column_width
if !g:airline_detect_modified || getbufvar(cur, '&modified') == s:current_modified
return s:current_tabline
endif
endif
let b = airline#extensions#tabline#new_builder()
let tab_bufs = tabpagebuflist(tabpagenr())
let show_buf_label_first = 0
if get(g:, 'airline#extensions#tabline#buf_label_first', 0)
let show_buf_label_first = 1
endif
if show_buf_label_first
call airline#extensions#tabline#add_label(b, 'buffers')
endif
let b.tab_bufs = tabpagebuflist(tabpagenr())
let b.overflow_group = 'airline_tabhid'
let b.buffers = airline#extensions#tabline#buflist#list()
if get(g:, 'airline#extensions#tabline#current_first', 0)
if index(b.buffers, cur) > -1
call remove(b.buffers, index(b.buffers, cur))
endif
let b.buffers = [cur] + b.buffers
endif
function! b.get_group(i) dict
let bufnum = get(self.buffers, a:i, -1)
if bufnum == -1
return ''
endif
let group = airline#extensions#tabline#group_of_bufnr(self.tab_bufs, bufnum)
if bufnum == bufnr('%')
let s:current_modified = (group == 'airline_tabmod') ? 1 : 0
endif
return group
endfunction
if has("tablineat")
function! b.get_pretitle(i) dict
let bufnum = get(self.buffers, a:i, -1)
return '%'.bufnum.'@airline#extensions#tabline#buffers#clickbuf@'
endfunction
function! b.get_posttitle(i) dict
return '%X'
endfunction
endif
function! b.get_title(i) dict
let bufnum = get(self.buffers, a:i, -1)
let group = self.get_group(a:i)
let pgroup = self.get_group(a:i - 1)
" always add a space when powerline_fonts are used
" or for the very first item
if get(g:, 'airline_powerline_fonts', 0) || a:i == 0
let space = s:spc
else
let space= (pgroup == group ? s:spc : '')
endif
if get(g:, 'airline#extensions#tabline#buffer_idx_mode', 0)
if len(s:number_map) > 0
return space. get(s:number_map, a:i+1, '') . '%(%{airline#extensions#tabline#get_buffer_name('.bufnum.')}%)' . s:spc
else
return '['.(a:i+1).s:spc.'%(%{airline#extensions#tabline#get_buffer_name('.bufnum.')}%)'.']'
endif
else
return space.'%(%{airline#extensions#tabline#get_buffer_name('.bufnum.')}%)'.s:spc
endif
endfunction
let current_buffer = max([index(b.buffers, cur), 0])
let last_buffer = len(b.buffers) - 1
call b.insert_titles(current_buffer, 0, last_buffer)
call b.add_section('airline_tabfill', '')
call b.split()
call b.add_section('airline_tabfill', '')
if !show_buf_label_first
call airline#extensions#tabline#add_label(b, 'buffers')
endif
if tabpagenr('$') > 1
call b.add_section_spaced('airline_tabmod', printf('%s %d/%d', "tab", tabpagenr(), tabpagenr('$')))
endif
let s:current_bufnr = cur
let s:column_width = &columns
let s:current_tabline = b.build()
let s:current_visible_buffers = copy(b.buffers)
if b._right_title <= last_buffer
call remove(s:current_visible_buffers, b._right_title, last_buffer)
endif
if b._left_title > 0
call remove(s:current_visible_buffers, 0, b._left_title)
endif
return s:current_tabline
endfunction
function! s:select_tab(buf_index)
" no-op when called in 'keymap_ignored_filetypes'
if count(get(g:, 'airline#extensions#tabline#keymap_ignored_filetypes',
\ ['vimfiler', 'nerdtree']), &ft)
return
endif
let idx = a:buf_index
if s:current_visible_buffers[0] == -1
let idx = idx + 1
endif
let buf = get(s:current_visible_buffers, idx, 0)
if buf != 0
exec 'b!' . buf
endif
endfunction
function! s:jump_to_tab(offset)
let l = airline#extensions#tabline#buflist#list()
let i = index(l, bufnr('%'))
if i > -1
exec 'b!' . l[(i + a:offset) % len(l)]
endif
endfunction
function! s:map_keys()
if get(g:, 'airline#extensions#tabline#buffer_idx_mode', 1)
noremap <silent> <Plug>AirlineSelectTab1 :call <SID>select_tab(0)<CR>
noremap <silent> <Plug>AirlineSelectTab2 :call <SID>select_tab(1)<CR>
noremap <silent> <Plug>AirlineSelectTab3 :call <SID>select_tab(2)<CR>
noremap <silent> <Plug>AirlineSelectTab4 :call <SID>select_tab(3)<CR>
noremap <silent> <Plug>AirlineSelectTab5 :call <SID>select_tab(4)<CR>
noremap <silent> <Plug>AirlineSelectTab6 :call <SID>select_tab(5)<CR>
noremap <silent> <Plug>AirlineSelectTab7 :call <SID>select_tab(6)<CR>
noremap <silent> <Plug>AirlineSelectTab8 :call <SID>select_tab(7)<CR>
noremap <silent> <Plug>AirlineSelectTab9 :call <SID>select_tab(8)<CR>
noremap <silent> <Plug>AirlineSelectPrevTab :<C-u>call <SID>jump_to_tab(-v:count1)<CR>
noremap <silent> <Plug>AirlineSelectNextTab :<C-u>call <SID>jump_to_tab(v:count1)<CR>
endif
endfunction
function! airline#extensions#tabline#buffers#clickbuf(minwid, clicks, button, modifiers) abort
" Clickable buffers
" works only in recent NeoVim with has('tablineat')
" single mouse button click without modifiers pressed
if a:clicks == 1 && a:modifiers !~# '[^ ]'
if a:button is# 'l'
" left button - switch to buffer
silent execute 'buffer' a:minwid
elseif a:button is# 'm'
" middle button - delete buffer
if get(g:, 'airline#extensions#tabline#middle_click_preserves_windows', 0) == 0 || winnr('$') == 1
" just simply delete the clicked buffer. This will cause windows
" associated with the clicked buffer to be closed.
silent execute 'bdelete' a:minwid
else
" find windows displaying the clicked buffer and open an new
" buffer in them.
let current_window = bufwinnr("%")
let window_number = bufwinnr(a:minwid)
let last_window_visited = -1
" Set to 1 if the clicked buffer was open in any windows.
let buffer_in_window = 0
" Find the next window with the clicked buffer open. If bufwinnr()
" returns the same window number, this is because we clicked a new
" buffer, and then tried editing a new buffer. Vim won't create a
" new empty buffer for the same window, so we get the same window
" number from bufwinnr(). In this case we just give up and don't
" delete the buffer.
" This could be made cleaner if we could check if the clicked buffer
" is a new buffer, but I don't know if there is a way to do that.
while window_number != -1 && window_number != last_window_visited
let buffer_in_window = 1
silent execute window_number . 'wincmd w'
silent execute 'enew'
let last_window_visited = window_number
let window_number = bufwinnr(a:minwid)
endwhile
silent execute current_window . 'wincmd w'
if window_number != last_window_visited || buffer_in_window == 0
silent execute 'bdelete' a:minwid
endif
endif
endif
endif
endfunction
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