check if coc-explorer window is open

[pirey]

is there a way to know if there is current coc-explorer window buffer opened?

right now i'm using this method:

let g:coc_explorer_open = 0

function! s:coc_explorer_is_open() abort
    return get(g:, 'coc_explorer_open', 0)
endfunction

function! s:coc_explorer_state(s) abort
    echom 'state ' . a:s
    let g:coc_explorer_open = a:s
endfunction

autocmd BufEnter *coc-explorer* call s:coc_explorer_state(1)
autocmd BufHidden *coc-explorer* call s:coc_explorer_state(0)

but it rather hacky.

i'm just wondering if it has already this feature built-in to coc-explorer

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[weirongxu]

You can use let opened = CocAction('runCommand', 'explorer.getNodeInfo', 'closest') is v:null, more information see this https://github.com/weirongxu/coc-explorer/wiki/Vim-API

[pirey]

i got this error on initial load neovim

the error only happen on initial load. the code works after that.

it seems that my code is running before runComman is ready, i'm not really sure. is there a way to check if runCommand is ready? what do you think?

i'm calling this function in lightline component, which i suppose is called everytime lightline is updated.

here's an excerpt.

let g:lightline = {
" ...
\   'tabline': {
\     'left': [['explorer_pad', 'buffers']]
\   }
\   'component_function': {
\     'explorer_pad': 'LightlineCocExplorerLeftpad',
" ...
\   },
" ...
\}

function! LightlineCocExplorerLeftpad() abort
    if &co < 86
        return ''
    endif

    if CocAction('runCommand', 'explorer.getNodeInfo', 'closest') isnot# v:null
        return printf('%-29s', '') . '⎟'
    endif

    return ''
endfunction

[weirongxu]

:help CocNvimInit

[pirey]

Ok. so there is no direct means to check if coc has already started.

for anyone looking at similar issue later, what i do is to set custom variable to indicate coc has initialized.

function! s:on_coc_init()
    let g:coc_ready = 1
endfunction

autocmd User CocNvimInit call s:on_coc_init()

then i can use it in lightline function

    if get(g:, 'coc_ready', 0)
        if CocAction('runCommand', 'explorer.getNodeInfo', 'closest') isnot# v:null
            return printf('%-29s', '') . '⎟'
        endif
    endif

thanks @weirongxu

[alps2006]

It is not working when having multiple windows by explorer.getNodeInfo.

I use the code below.

    let l:winnrs = filter(range(1, winnr('$')), 'getwinvar(v:val, "&ft") == "coc-explorer"')
    let l:opened  = len(l:winnrs) > 0
    if l:opened
        ......
    else
        ......
    endif