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user balloon_eval for hover information #64

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user balloon_eval for hover information #64

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9707871
user balloon_eval for hover information
prabirshrestha Nov 23, 2017
c337508
Merge branch 'master' into balloon_eval_hover
mattn Dec 21, 2018
1c4f000
Refactoring
mattn Dec 21, 2018
5ab28f8
Fix implementation
mattn Dec 21, 2018
fd4ac24
Remove needless condition
mattn Dec 21, 2018
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3 changes: 3 additions & 0 deletions autoload/lsp.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,9 @@ function! s:on_text_document_did_open() abort
call lsp#log('s:on_text_document_did_open()', l:buf, &filetype, getcwd(), lsp#utils#get_buffer_uri(l:buf))
for l:server_name in lsp#get_whitelisted_servers()
call s:ensure_flush(l:buf, l:server_name, function('s:Noop'))
if g:lsp_hover_balloon_eval
setlocal ballooneval balloonexpr=lsp#ui#vim#hover#balloon()
endif
endfor
endfunction

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38 changes: 38 additions & 0 deletions autoload/lsp/ui/vim/hover.vim
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Expand Up @@ -2,6 +2,44 @@ function! s:not_supported(what) abort
return lsp#utils#error(a:what.' not supported for '.&filetype)
endfunction

function! lsp#ui#vim#hover#balloon() abort
let l:servers = filter(lsp#get_whitelisted_servers(), 'lsp#capabilities#has_hover_provider(v:val)')

if len(l:servers) == 0
echom 'Retrieving hover not supported for ' . &filetype
return ''
endif

for l:server in l:servers
call lsp#send_request(l:server, {
\ 'method': 'textDocument/hover',
\ 'params': {
\ 'textDocument': lsp#get_text_document_identifier(),
\ 'position': { 'line': v:beval_lnum - 1, 'character': v:beval_col - 1 }
\ },
\ 'on_notification': function('s:handle_balloon', [l:server]),
\ })
endfor

echom 'Retrieving hover ...'
return ''
endfunction

function! s:handle_balloon(server, data) abort
if lsp#client#is_error(a:data['response'])
call lsp#utils#error('Failed to retrieve hover information for ' . a:server)
return
endif

if !has_key(a:data['response'], 'result')
return
endif

let l:contents = a:data['response']['result']['contents']

call balloon_show(l:contents.value)
endfunction

function! lsp#ui#vim#hover#get_hover_under_cursor() abort
let l:servers = filter(lsp#get_whitelisted_servers(), 'lsp#capabilities#has_hover_provider(v:val)')

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1 change: 1 addition & 0 deletions plugin/lsp.vim
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Expand Up @@ -4,6 +4,7 @@ endif
let g:lsp_loaded = 1

let g:lsp_auto_enable = get(g:, 'lsp_auto_enable', 1)
let g:lsp_hover_balloon_eval = get(g:, 'lsp_hover_balloon_eval', has('balloon_eval'))
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need to support this scenario. let g:lsp_hover_ui = 'echo,preview,balloon'

let g:lsp_async_completion = get(g:, 'lsp_async_completion', 0)
let g:lsp_log_file = get(g:, 'lsp_log_file', '')
let g:lsp_log_verbose = get(g:, 'lsp_log_verbose', 1)
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