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" MIT License. Copyright (c) 2013-2014 Bailey Ling.
" vim: et ts=2 sts=2 sw=2
let s:formatter = get(g:, 'airline#extensions#tabline#formatter', 'default')
let s:excludes = get(g:, 'airline#extensions#tabline#excludes', [])
let s:tab_nr_type = get(g:, 'airline#extensions#tabline#tab_nr_type', 0)
let s:show_buffers = get(g:, 'airline#extensions#tabline#show_buffers', 1)
let s:show_tab_nr = get(g:, 'airline#extensions#tabline#show_tab_nr', 1)
let s:show_tab_type = get(g:, 'airline#extensions#tabline#show_tab_type', 1)
let s:close_symbol = get(g:, 'airline#extensions#tabline#close_symbol', 'X')
let s:builder_context = {
\ 'active' : 1,
\ 'right_sep' : get(g:, 'airline#extensions#tabline#right_sep' , g:airline_right_sep),
\ 'right_alt_sep' : get(g:, 'airline#extensions#tabline#right_alt_sep', g:airline_right_alt_sep),
\ }
if get(g:, 'airline_powerline_fonts', 0)
let s:builder_context.left_sep = get(g:, 'airline#extensions#tabline#left_sep' , "\ue0b0")
let s:builder_context.left_alt_sep = get(g:, 'airline#extensions#tabline#left_alt_sep' , "\ue0b1")
else
let s:builder_context.left_sep = get(g:, 'airline#extensions#tabline#left_sep' , ' ')
let s:builder_context.left_alt_sep = get(g:, 'airline#extensions#tabline#left_alt_sep' , '|')
endif
let s:buf_min_count = get(g:, 'airline#extensions#tabline#buffer_min_count', 0)
let s:tab_min_count = get(g:, 'airline#extensions#tabline#tab_min_count', 0)
let s:spc = g:airline_symbols.space
function! airline#extensions#tabline#init(ext)
if has('gui_running')
set guioptions-=e
endif
autocmd User AirlineToggledOn call s:toggle_on()
autocmd User AirlineToggledOff call s:toggle_off()
autocmd BufDelete * let s:current_bufnr = -1
call s:toggle_on()
call a:ext.add_theme_func('airline#extensions#tabline#load_theme')
endfunction
function! s:toggle_off()
if exists('s:original_tabline')
let &tabline = s:original_tabline
let &showtabline = s:original_showtabline
endif
endfunction
function! s:toggle_on()
let [ s:original_tabline, s:original_showtabline ] = [ &tabline, &showtabline ]
set tabline=%!airline#extensions#tabline#get()
if s:buf_min_count <= 0 && s:tab_min_count <= 1
set showtabline=2
else
augroup airline_tabline
autocmd!
if s:show_buffers == 1
autocmd CursorMoved * call <sid>on_cursormove(s:buf_min_count, len(s:get_buffer_list()))
else
autocmd TabEnter * call <sid>on_cursormove(s:tab_min_count, tabpagenr('$'))
endif
augroup END
endif
endfunction
function! airline#extensions#tabline#load_theme(palette)
let colors = get(a:palette, 'tabline', {})
let l:tab = get(colors, 'airline_tab', a:palette.normal.airline_b)
let l:tabsel = get(colors, 'airline_tabsel', a:palette.normal.airline_a)
let l:tabtype = get(colors, 'airline_tabtype', a:palette.visual.airline_a)
let l:tabfill = get(colors, 'airline_tabfill', a:palette.normal.airline_c)
let l:tabmod = get(colors, 'airline_tabmod', a:palette.insert.airline_a)
let l:tabhid = get(colors, 'airline_tabhid', a:palette.normal.airline_c)
call airline#highlighter#exec('airline_tab', l:tab)
call airline#highlighter#exec('airline_tabsel', l:tabsel)
call airline#highlighter#exec('airline_tabtype', l:tabtype)
call airline#highlighter#exec('airline_tabfill', l:tabfill)
call airline#highlighter#exec('airline_tabmod', l:tabmod)
call airline#highlighter#exec('airline_tabhid', l:tabhid)
endfunction
function! s:on_cursormove(min_count, total_count)
if a:total_count >= a:min_count
if &showtabline != 2
set showtabline=2
endif
else
if &showtabline != 0
set showtabline=0
endif
endif
endfunction
function! airline#extensions#tabline#get()
if s:show_buffers && tabpagenr('$') == 1
return s:get_buffers()
else
return s:get_tabs()
endif
endfunction
function! airline#extensions#tabline#title(n)
let buflist = tabpagebuflist(a:n)
let winnr = tabpagewinnr(a:n)
return airline#extensions#tabline#get_buffer_name(buflist[winnr - 1])
endfunction
function! airline#extensions#tabline#get_buffer_name(nr)
return airline#extensions#tabline#{s:formatter}#format(a:nr, get(s:, 'current_buffer_list', s:get_buffer_list()))
endfunction
function! s:get_buffer_list()
let buffers = []
let cur = bufnr('%')
for nr in range(1, bufnr('$'))
if buflisted(nr) && bufexists(nr)
for ex in s:excludes
if match(bufname(nr), ex)
continue
endif
endfor
if getbufvar(nr, 'current_syntax') == 'qf'
continue
endif
call add(buffers, nr)
endif
endfor
let s:current_buffer_list = buffers
return buffers
endfunction
function! s:get_visible_buffers()
let buffers = s:get_buffer_list()
let cur = bufnr('%')
let total_width = 0
let max_width = 0
for nr in buffers
let width = len(airline#extensions#tabline#get_buffer_name(nr)) + 4
let total_width += width
let max_width = max([max_width, width])
endfor
" only show current and surrounding buffers if there are too many buffers
let position = index(buffers, cur)
let vimwidth = &columns
if total_width > vimwidth && position > -1
let buf_count = len(buffers)
" determine how many buffers to show based on the longest buffer width,
" use one on the right side and put the rest on the left
let buf_max = vimwidth / max_width
let buf_right = 1
let buf_left = max([0, buf_max - buf_right])
let start = max([0, position - buf_left])
let end = min([buf_count, position + buf_right])
" fill up available space on the right
if position < buf_left
let end += (buf_left - position)
endif
" fill up available space on the left
if end > buf_count - 1 - buf_right
let start -= max([0, buf_right - (buf_count - 1 - position)])
endif
let buffers = eval('buffers[' . start . ':' . end . ']')
if start > 0
call insert(buffers, -1, 0)
endif
if end < buf_count - 1
call add(buffers, -1)
endif
endif
return buffers
endfunction
let s:current_bufnr = -1
let s:current_tabnr = -1
let s:current_tabline = ''
let s:current_modified = 0
function! s:get_buffers()
let cur = bufnr('%')
if cur == s:current_bufnr
if !g:airline_detect_modified || getbufvar(cur, '&modified') == s:current_modified
return s:current_tabline
endif
endif
let b = airline#builder#new(s:builder_context)
let tab_bufs = tabpagebuflist(tabpagenr())
for nr in s:get_visible_buffers()
if nr < 0
call b.add_raw('%#airline_tabhid#...')
continue
endif
if cur == nr
if g:airline_detect_modified && getbufvar(nr, '&modified')
let group = 'airline_tabmod'
else
let group = 'airline_tabsel'
endif
let s:current_modified = (group == 'airline_tabmod') ? 1 : 0
else
if index(tab_bufs, nr) > -1
let group = 'airline_tab'
else
let group = 'airline_tabhid'
endif
endif
call b.add_section(group, s:spc.'%(%{airline#extensions#tabline#get_buffer_name('.nr.')}%)'.s:spc)
endfor
call b.add_section('airline_tabfill', '')
call b.split()
call b.add_section('airline_tabtype', ' buffers ')
let s:current_bufnr = cur
let s:current_tabline = b.build()
return s:current_tabline
endfunction
function! s:get_tabs()
let curbuf = bufnr('%')
let curtab = tabpagenr()
if curbuf == s:current_bufnr && curtab == s:current_tabnr
if !g:airline_detect_modified || getbufvar(curbuf, '&modified') == s:current_modified
return s:current_tabline
endif
endif
let b = airline#builder#new(s:builder_context)
for i in range(1, tabpagenr('$'))
if i == curtab
let group = 'airline_tabsel'
if g:airline_detect_modified
for bi in tabpagebuflist(i)
if getbufvar(bi, '&modified')
let group = 'airline_tabmod'
endif
endfor
endif
let s:current_modified = (group == 'airline_tabmod') ? 1 : 0
else
let group = 'airline_tab'
endif
let val = '%('
if s:show_tab_nr
if s:tab_nr_type == 0
let val .= ' %{len(tabpagebuflist('.i.'))}'
else
let val .= (g:airline_symbols.space).i
endif
endif
call b.add_section(group, val.'%'.i.'T %{airline#extensions#tabline#title('.i.')} %)')
endfor
call b.add_raw('%T')
call b.add_section('airline_tabfill', '')
call b.split()
call b.add_section('airline_tab', ' %999X'.s:close_symbol.' ')
if s:show_tab_type
call b.add_section('airline_tabtype', ' tabs ')
endif
let s:current_bufnr = curbuf
let s:current_tabnr = curtab
let s:current_tabline = b.build()
return s:current_tabline
endfunction
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