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Add an option to centre the active tab in the tabline

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This commit is contained in:
mrmr1993 2018-03-15 20:07:44 +00:00
parent 275ec4fe63
commit 4a342afb90
1 changed files with 10 additions and 3 deletions
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13
autoload/airline/extensions/tabline/builder.vim
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@ -44,6 +44,8 @@ function! s:prototype.build() dict
if has_key(self, '_left_position') if has_key(self, '_left_position')
let self._remaining_space = &columns - s:strchars(s:evaluate_tabline(self._build())) let self._remaining_space = &columns - s:strchars(s:evaluate_tabline(self._build()))
let center_active = get(g:, 'airline#extensions#tabline#center_active', 0)
let left_sep_size = s:strchars(s:evaluate_tabline(self._context.left_sep)) let left_sep_size = s:strchars(s:evaluate_tabline(self._context.left_sep))
let left_alt_sep_size = s:strchars(s:evaluate_tabline(self._context.left_alt_sep)) let left_alt_sep_size = s:strchars(s:evaluate_tabline(self._context.left_alt_sep))
@ -66,19 +68,24 @@ function! s:prototype.build() dict
endif endif
" Add the tab to the right " Add the tab to the right
if self._right_tab <= self._last_tab if !center_active && self._right_tab <= self._last_tab
let self._right_tab += let self._right_tab +=
\ self.try_insert_tab(self._right_tab, self._right_position, left_alt_sep_size, 1) \ self.try_insert_tab(self._right_tab, self._right_position, left_alt_sep_size, 1)
endif endif
while self._remaining_space > 0 while self._remaining_space > 0
let done = 0
if self._left_tab >= self._first_tab if self._left_tab >= self._first_tab
let self._left_tab -= let self._left_tab -=
\ self.try_insert_tab(self._left_tab, self._left_position, left_alt_sep_size, 0) \ self.try_insert_tab(self._left_tab, self._left_position, left_alt_sep_size, 0)
elseif self._right_tab <= self._last_tab let done = 1
endif
if self._right_tab <= self._last_tab && (center_active || !done)
let self._right_tab += let self._right_tab +=
\ self.try_insert_tab(self._right_tab, self._right_position, left_alt_sep_size, 0) \ self.try_insert_tab(self._right_tab, self._right_position, left_alt_sep_size, 0)
else let done = 1
endif
if !done
break break
endif endif
endwhile endwhile