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scriptencoding utf-8
" Author: w0rp <devw0rp@gmail.com>
" Author: Luan Santos <cfcluan@gmail.com>
" Description: Shows lint message for the current line as virtualtext, if any
" Controls the milliseconds delay before showing a message.
let g:ale_virtualtext_delay = get(g:, 'ale_virtualtext_delay', 10)
let s:cursor_timer = -1
let s:last_pos = [0, 0, 0]
let s:has_virt_text = 0
if has('nvim-0.3.2')
let s:ns_id = nvim_create_namespace('ale')
let s:has_virt_text = 1
elseif has('textprop') && has('popupwin')
call prop_type_add('ale', {})
let s:last_popup = -1
let s:has_virt_text = 1
endif
function! ale#virtualtext#Clear() abort
if !s:has_virt_text
return
endif
let l:buffer = bufnr('')
if has('nvim')
call nvim_buf_clear_highlight(l:buffer, s:ns_id, 0, -1)
else
if s:last_popup != -1
call prop_remove({'type': 'ale'})
call popup_close(s:last_popup)
let s:last_popup = -1
endif
endif
endfunction
function! ale#virtualtext#ShowMessage(message, hl_group) abort
if !s:has_virt_text
return
endif
let l:line = line('.')
let l:buffer = bufnr('')
let l:prefix = get(g:, 'ale_virtualtext_prefix', '> ')
let l:msg = l:prefix.trim(substitute(a:message, '\n', ' ', 'g'))
if has('nvim')
call nvim_buf_set_virtual_text(l:buffer, s:ns_id, l:line-1, [[l:msg, a:hl_group]], {})
else
let l:left_pad = col('$')
call prop_add(l:line, l:left_pad, {
\ 'type': 'ale',
\})
let s:last_popup = popup_create(l:msg, {
\ 'line': -1,
\ 'padding': [0, 0, 0, 1],
\ 'mask': [[1, 1, 1, 1]],
\ 'textprop': 'ale',
\ 'highlight': a:hl_group,
\ 'fixed': 1,
\ 'wrap': 0,
\ 'zindex': 2
\})
endif
endfunction
function! s:StopCursorTimer() abort
if s:cursor_timer != -1
call timer_stop(s:cursor_timer)
let s:cursor_timer = -1
endif
endfunction
function! ale#virtualtext#ShowCursorWarning(...) abort
if !g:ale_virtualtext_cursor
return
endif
let l:buffer = bufnr('')
if mode(1) isnot# 'n'
return
endif
if ale#ShouldDoNothing(l:buffer)
return
endif
let [l:info, l:loc] = ale#util#FindItemAtCursor(l:buffer)
call ale#virtualtext#Clear()
if !empty(l:loc)
let l:msg = l:loc.text
let l:hl_group = 'ALEVirtualTextInfo'
let l:type = get(l:loc, 'type', 'E')
if l:type is# 'E'
if get(l:loc, 'sub_type', '') is# 'style'
let l:hl_group = 'ALEVirtualTextStyleError'
else
let l:hl_group = 'ALEVirtualTextError'
endif
elseif l:type is# 'W'
if get(l:loc, 'sub_type', '') is# 'style'
let l:hl_group = 'ALEVirtualTextStyleWarning'
else
let l:hl_group = 'ALEVirtualTextWarning'
endif
endif
call ale#virtualtext#ShowMessage(l:msg, l:hl_group)
endif
endfunction
function! ale#virtualtext#ShowCursorWarningWithDelay() abort
let l:buffer = bufnr('')
if !g:ale_virtualtext_cursor
return
endif
if mode(1) isnot# 'n'
return
endif
call s:StopCursorTimer()
let l:pos = getpos('.')[0:2]
" Check the current buffer, line, and column number against the last
" recorded position. If the position has actually changed, *then*
" we should show something. Otherwise we can end up doing processing
" the show message far too frequently.
if l:pos != s:last_pos
let l:delay = ale#Var(l:buffer, 'virtualtext_delay')
let s:last_pos = l:pos
let s:cursor_timer = timer_start(
\ l:delay,
\ function('ale#virtualtext#ShowCursorWarning')
\)
endif
endfunction
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