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Allow disabling the Buftabline #72

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Allow disabling the Buftabline #72

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b2c93be
Enable autoloading
jandamm Feb 1, 2020
2927fd5
Add way to disable the plugin completely
jandamm Feb 1, 2020
1f63152
Add way to disable Buftabline
jandamm Feb 1, 2020
76954b6
Revert autoloading
jandamm Feb 26, 2020
054f43d
Add width as configuration to render function
jandamm Feb 26, 2020
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26 changes: 21 additions & 5 deletions plugin/buftabline.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,11 @@ if v:version < 700
finish
endif

if exists('g:loadedBuftabline')
finish
endif
let g:loadedBuftabline = 1

scriptencoding utf-8

hi default link BufTabLineCurrent TabLineSel
Expand All @@ -39,6 +44,7 @@ let g:buftabline_indicators = get(g:, 'buftabline_indicators', 0)
let g:buftabline_separators = get(g:, 'buftabline_separators', 0)
let g:buftabline_show = get(g:, 'buftabline_show', 2)
let g:buftabline_plug_max = get(g:, 'buftabline_plug_max', 10)
let g:buftabline_enabled = get(g:, 'buftabline_enabled', 1)

function! buftabline#user_buffers() " help buffers are always unlisted, but quickfix buffers are not
return filter(range(1,bufnr('$')),'buflisted(v:val) && "quickfix" !=? getbufvar(v:val, "&buftype")')
Expand All @@ -47,10 +53,15 @@ endfunction
let s:dirsep = fnamemodify(getcwd(),':p')[-1:]
let s:centerbuf = winbufnr(0)
function! buftabline#render()
return buftabline#renderWithWidth(&columns)
endfunction

function! buftabline#renderWithWidth(width)
let show_num = g:buftabline_numbers == 1
let show_ord = g:buftabline_numbers == 2
let show_mod = g:buftabline_indicators
let lpad = g:buftabline_separators ? nr2char(0x23B8) : ' '
let columns = a:width

let bufnums = buftabline#user_buffers()
let centerbuf = s:centerbuf " prevent tabline jumping around when non-user buffer current (e.g. help)
Expand Down Expand Up @@ -99,8 +110,8 @@ function! buftabline#render()
" now keep the current buffer center-screen as much as possible:

" 1. setup
let lft = { 'lasttab': 0, 'cut': '.', 'indicator': '<', 'width': 0, 'half': &columns / 2 }
let rgt = { 'lasttab': -1, 'cut': '.$', 'indicator': '>', 'width': 0, 'half': &columns - lft.half }
let lft = { 'lasttab': 0, 'cut': '.', 'indicator': '<', 'width': 0, 'half': columns / 2 }
let rgt = { 'lasttab': -1, 'cut': '.$', 'indicator': '>', 'width': 0, 'half': columns - lft.half }

" 2. sum the string lengths for the left and right halves
let currentside = lft
Expand All @@ -122,10 +133,10 @@ function! buftabline#render()
endif

" 3. toss away tabs and pieces until all fits:
if ( lft.width + rgt.width ) > &columns
if ( lft.width + rgt.width ) > columns
let oversized
\ = lft.width < lft.half ? [ [ rgt, &columns - lft.width ] ]
\ : rgt.width < rgt.half ? [ [ lft, &columns - rgt.width ] ]
\ = lft.width < lft.half ? [ [ rgt, columns - lft.width ] ]
\ : rgt.width < rgt.half ? [ [ lft, columns - rgt.width ] ]
\ : [ [ lft, lft.half ], [ rgt, rgt.half ] ]
for [side, budget] in oversized
let delta = side.width - budget
Expand Down Expand Up @@ -165,6 +176,11 @@ function! buftabline#update(zombie)
set tabline=%!buftabline#render()
endfunction

" This disables the plugin but loads configuration
if !g:buftabline_enabled
finish
endif

augroup BufTabLine
autocmd!
autocmd VimEnter * call buftabline#update(0)
Expand Down