coc-mappings.vim

" These default mappings should either go in your .vimrc or in a file that
" you're going to source from your .vimrc. For example, you can copy this file
" into your ~ directory and then put the following in your .vimrc to source it
"
" coc.nvim lsp mappings
"if filereadable(expand("~/coc-mappings.vim"))
"  source ~/coc-mappings.vim"
"endif
"
"
" If you're curious how to share this or your .vimrc with both vim and nvim,
" you can find a great instructions about this here
" https://neovim.io/doc/user/nvim.html#nvim-from-vim
"
" Finally, keep in mind that these are "suggested" settings. Play around with
" them and change them to your liking.

" If hidden is not set, TextEdit might fail.
set hidden

" Some servers have issues with backup files
set nobackup
set nowritebackup

" You will have a bad experience with diagnostic messages with the default of 4000.
set updatetime=300

" Don't give |ins-completion-menu| messages.
" set shortmess+=c

" Always show signcolumns
set signcolumn=yes

" Use tab for trigger completion with characters ahead and navigate.
" Use command ':verbose imap <tab>' to make sure tab is not mapped by another plugin.
 inoremap <silent><expr> <C-TAB>
       \ pumvisible() ? "\<C-n>" :
       \ <SID>check_back_space() ? "\<TAB>" :
       \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

" Used in the tab autocompletion for coc
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

" Use <c-space> to trigger completion.
inoremap <silent><expr> <c-space> coc#refresh()

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
" position.
" Coc only does snippet and additional edit on confirm.
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"

" Use `[g` and `]g` to navigate diagnostics
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" Remap keys for gotos
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" For Neovim only!  Used to expand decorations in worksheets
nmap <Leader>ws <Plug>(coc-metals-expand-decoration)

" Use K to either doHover or show documentation in preview window
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')

" Remap for rename current word
nmap <leader>rn <Plug>(coc-rename)

" Remap for format selected region
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  " Setup formatexpr specified filetype(s).
  autocmd FileType scala setl formatexpr=CocAction('formatSelected')
  " Update signature help on jump placeholder
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

" Remap for do codeAction of current line
xmap <leader>a  <Plug>(coc-codeaction-line)
nmap <leader>a  <Plug>(coc-codeaction-line)

" Fix autofix problem of current line
nmap <leader>qf  <Plug>(coc-fix-current)

" Use `:Format` to format current buffer
command! -nargs=0 Format :call CocActionAsync('format')

" Use `:Fold` to fold current buffer
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" For Neovim only!  Trigger for code actions
" Make sure `"codeLens.enable": true` is set in your coc config
nnoremap <leader>cl :<C-u>call CocActionAsync('codeLensAction')<CR>

" Show all diagnostics
nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions
nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
" Show commands
nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document
nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols
nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list
nnoremap <silent> <space>p  :<C-u>CocListResume<CR>

" Notify coc.nvim that <enter> has been pressed.
" Currently used for the formatOnType feature.
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
      \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

" Toggle panel with Tree Views
nnoremap <silent> <space>t :<C-u>CocCommand metals.tvp<CR>
" Toggle Tree View 'metalsPackages'
nnoremap <silent> <space>tp :<C-u>CocCommand metals.tvp metalsPackages<CR>
" Toggle Tree View 'metalsCompile'
nnoremap <silent> <space>tc :<C-u>CocCommand metals.tvp metalsCompile<CR>
" Toggle Tree View 'metalsBuild'
nnoremap <silent> <space>tb :<C-u>CocCommand metals.tvp metalsBuild<CR>
" Reveal current current class (trait or object) in Tree View 'metalsPackages'
nnoremap <silent> <space>tf :<C-u>CocCommand metals.revealInTreeView metalsPackages<CR>