popup window の標準的な処理を書いてみる

popup_window_basic.vim

let s:winid = 0

function! s:open_pop() abort
    if s:winid != 0
        call s:show_pop()
        return
    endif

    let s:winid = popup_create('',  {
        \ 'pos': 'center',
        \ 'minwidth': 40,
        \ 'minheight': 10,
        \ 'borderchars': ['-', '|', '-', '|', '+', '+', '+', '+'],
        \ 'border': [1, 1, 1, 1],
        \ 'padding': [1, 1, 1, 1],
        \ })

endfunction

function! s:settext_pop(text) abort
    call popup_settext(s:winid, a:text)
endfunction

function! s:close_pop() abort
    call popup_close(s:winid)
    let s:winid = 0
endfunction

function! s:hide_pop() abort
    call popup_hide(s:winid)
endfunction

function! s:show_pop() abort
    call popup_show(s:winid)
endfunction

function! s:split_bufnr() abort
    " popup window に紐づく buffer number を取得し、編集する
    exec 'sbuffer '.winbufnr(s:winid)
endfunction

command! -buffer SplitPopupBuf call <SID>split_bufnr()


command! -buffer OpenPop call <SID>open_pop()
command! -buffer ClosePop call <SID>close_pop()
command! -buffer HidePop call <SID>hide_pop()
command! -buffer ShowPop call <SID>show_pop()
command! -buffer -nargs=1 SetTextPop call <SID>settext_pop(<f-args>)