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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:prototype = {}
function! s:prototype.split(...) dict
call add(self._sections, ['|', a:0 ? a:1 : '%='])
endfunction
function! s:prototype.add_section_spaced(group, contents) dict
let spc = empty(a:contents) ? '' : g:airline_symbols.space
call self.add_section(a:group, spc.a:contents.spc)
endfunction
function! s:prototype.add_section(group, contents) dict
call add(self._sections, [a:group, a:contents])
endfunction
function! s:prototype.add_raw(text) dict
call add(self._sections, ['', a:text])
endfunction
function! s:prototype.insert_section(group, contents, position) dict
call insert(self._sections, [a:group, a:contents], a:position)
endfunction
function! s:prototype.insert_raw(text, position) dict
call insert(self._sections, ['', a:text], a:position)
endfunction
function! s:prototype.get_position() dict
return len(self._sections)
endfunction
function! airline#builder#get_prev_group(sections, i)
let x = a:i - 1
while x >= 0
let group = a:sections[x][0]
if group != '' && group != '|'
return group
endif
let x = x - 1
endwhile
return ''
endfunction
function! airline#builder#get_next_group(sections, i)
let x = a:i + 1
let l = len(a:sections)
while x < l
let group = a:sections[x][0]
if group != '' && group != '|'
return group
endif
let x = x + 1
endwhile
return ''
endfunction
function! s:prototype.build() dict
let side = 1
let line = ''
let i = 0
let length = len(self._sections)
let split = 0
let is_empty = 0
let prev_group = ''
while i < length
let section = self._sections[i]
let group = section[0]
let contents = section[1]
let pgroup = prev_group
let prev_group = airline#builder#get_prev_group(self._sections, i)
if group ==# 'airline_c' && &buftype ==# 'terminal' && self._context.active
let group = 'airline_term'
elseif group ==# 'airline_c' && !self._context.active && has_key(self._context, 'bufnr')
let group = 'airline_c'. self._context.bufnr
elseif prev_group ==# 'airline_c' && !self._context.active && has_key(self._context, 'bufnr')
let prev_group = 'airline_c'. self._context.bufnr
endif
if is_empty
let prev_group = pgroup
endif
let is_empty = s:section_is_empty(self, contents)
if is_empty
" need to fix highlighting groups, since we
" have skipped a section, we actually need
" the previous previous group and so the
" seperator goes from the previous previous group
" to the current group
let pgroup = group
endif
if group == ''
let line .= contents
elseif group == '|'
let side = 0
let line .= contents
let split = 1
else
if prev_group == ''
let line .= '%#'.group.'#'
elseif split
if !is_empty
let line .= s:get_transitioned_seperator(self, prev_group, group, side)
endif
let split = 0
else
if !is_empty
let line .= s:get_seperator(self, prev_group, group, side)
endif
endif
let line .= is_empty ? '' : s:get_accented_line(self, group, contents)
endif
let i = i + 1
endwhile
if !self._context.active
"let line = substitute(line, '%#airline_c#', '%#airline_c'.self._context.bufnr.'#', '')
let line = substitute(line, '%#.\{-}\ze#', '\0_inactive', 'g')
endif
return line
endfunction
function! airline#builder#should_change_group(group1, group2)
if a:group1 == a:group2
return 0
endif
let color1 = airline#highlighter#get_highlight(a:group1)
let color2 = airline#highlighter#get_highlight(a:group2)
if g:airline_gui_mode ==# 'gui'
return color1[1] != color2[1] || color1[0] != color2[0]
else
return color1[3] != color2[3] || color1[2] != color2[2]
endif
endfunction
function! s:get_transitioned_seperator(self, prev_group, group, side)
let line = ''
if get(a:self._context, 'tabline', 0) && get(g:, 'airline#extensions#tabline#alt_sep', 0) && a:group ==# 'airline_tabsel' && a:side
call airline#highlighter#add_separator(a:prev_group, a:group, 0)
let line .= '%#'.a:prev_group.'_to_'.a:group.'#'
let line .= a:self._context.right_sep.'%#'.a:group.'#'
else
call airline#highlighter#add_separator(a:prev_group, a:group, a:side)
let line .= '%#'.a:prev_group.'_to_'.a:group.'#'
let line .= a:side ? a:self._context.left_sep : a:self._context.right_sep
let line .= '%#'.a:group.'#'
endif
return line
endfunction
function! s:get_seperator(self, prev_group, group, side)
if airline#builder#should_change_group(a:prev_group, a:group)
return s:get_transitioned_seperator(a:self, a:prev_group, a:group, a:side)
else
return a:side ? a:self._context.left_alt_sep : a:self._context.right_alt_sep
endif
endfunction
function! s:get_accented_line(self, group, contents)
if a:self._context.active
" active window
let contents = []
let content_parts = split(a:contents, '__accent')
for cpart in content_parts
let accent = matchstr(cpart, '_\zs[^#]*\ze')
call add(contents, cpart)
endfor
let line = join(contents, a:group)
let line = substitute(line, '__restore__', a:group, 'g')
else
" inactive window
let line = substitute(a:contents, '%#__accent[^#]*#', '', 'g')
let line = substitute(line, '%#__restore__#', '', 'g')
endif
return line
endfunction
function! s:section_is_empty(self, content)
let start=1
" do not check for inactive windows or the tabline
if a:self._context.active == 0
return 0
elseif get(a:self._context, 'tabline', 0)
return 0
endif
" only check, if airline#skip_empty_sections == 1
if get(g:, 'airline_skip_empty_sections', 0) == 0
return 0
endif
" only check, if airline#skip_empty_sections == 1
if get(w:, 'airline_skip_empty_sections', -1) == 0
return 0
endif
" assume accents sections to be never empty
" (avoides, that on startup the mode message becomes empty)
if match(a:content, '%#__accent_[^#]*#.*__restore__#') > -1
return 0
endif
if empty(a:content)
return 1
endif
let list=matchlist(a:content, '%{\zs.\{-}\ze}', 1, start)
if empty(list)
return 0 " no function in statusline text
endif
while len(list) > 0
let expr = list[0]
try
" catch all exceptions, just in case
if !empty(eval(expr))
return 0
endif
catch
return 0
endtry
let start += 1
let list=matchlist(a:content, '%{\zs.\{-}\ze}', 1, start)
endw
return 1
endfunction
function! airline#builder#new(context)
let builder = copy(s:prototype)
let builder._context = a:context
let builder._sections = []
call extend(builder._context, {
\ 'left_sep': g:airline_left_sep,
\ 'left_alt_sep': g:airline_left_alt_sep,
\ 'right_sep': g:airline_right_sep,
\ 'right_alt_sep': g:airline_right_alt_sep,
\ }, 'keep')
return builder
endfunction
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