.vimrc

" noncompatible with vi
set nocompatible

" ==========================================================
"  Vundle
" ==========================================================

filetype off  " necessary for Vundle to work

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()

" let Vundle manage Vundle, required
Plugin 'gmarik/Vundle.vim'

Plugin 'scrooloose/nerdtree'
Plugin 'scrooloose/syntastic'
Plugin 'altercation/vim-colors-solarized'
Plugin 'vim-airline/vim-airline'
Plugin 'vim-airline/vim-airline-themes'
Plugin 'SirVer/ultisnips'
Plugin 'honza/vim-snippets'
Plugin 'preservim/nerdcommenter'
Plugin 'ervandew/supertab'
"Plugin 'matze/vim-tex-fold'
"Plugin 'tpope/vim-fugitive'
"Plugin 'jmcantrell/vim-virtualenv'

call vundle#end()

" ==========================================================
"  Basic Settings
" ==========================================================

" set correct filetypes
autocmd BufRead,BufNewFile *.md,*markdown,TODO
        \ setlocal filetype=markdown

" syntax highlighting
syntax on

" umoznit nacteni odsazovaciho souboru pro dany typ souboru
filetype plugin indent on

" disable backup and swap files
set nobackup
set noswapfile

" show what is typing as a command
set showcmd

" Rebind <Leader> key, temporarily trying space instead of comma.
" Make sure space doesn't have any mapping.
nnoremap <space> <Nop>
let mapleader=" "
"let mapleader=","

" indenting automatically
set autoindent
" tab is 4 spaces wide
set tabstop=4
" use spaces, not tabs, for autoindent/tab key
set expandtab
" indent level is 4 spaces wide
set shiftwidth=2
" width of space used by <TAB> and <BS> keys
set softtabstop=2
" use 4 spaces for indentation in source codes of some languages
autocmd FileType python,java,c,elm setlocal softtabstop=4 shiftwidth=4
" round indent to a multiple of shiftwidth
set shiftround
" handle tabs more intelligently
set smarttab
" but do not be to much intelligent in tex files
autocmd FileType tex setlocal nosmarttab
autocmd FileType tex setlocal indentexpr=

" soft (visual) wrapping
set wrap
" wrap on whitespace and some other characters (!@*-+;:,./?)
set linebreak
" auto-wrap comments (c), allow formatting command gq (q),
" remove comment leader when joint two comment lines (j)
autocmd BufNewFile,BufRead * setlocal formatoptions=cqj
" note: it is necessary to set it this way, otherwise it would be overwriten

" copying and pasting
set clipboard=unnamedplus  " use system clipboard for pasting

" mouse
set mouse=a             " enable mouse

" easier moving code blocks
vnoremap < <gv
vnoremap > >gv

" keep 3 context lines above and below the cursor
set scrolloff=3

" wildmenu
set wildmenu
set wildignore=*.o,*.obj,*.swp,*~,*.pyc
" on 1st TAB complete the longest common prefix, on next TABs complete the next full option
set wildmode=longest:full,full

" shorten some messages (to avoid 'hit ENTER messages' when message is too long)
set shortmess=aItT

" length of command line history
set history=100

" trailing whitespace when saving
autocmd BufWritePre * :%s/\s\+$//e

" Let cursor move past the last char in <C-v> mode
set virtualedit=block

" line numbers
set number              " display line numbers
set numberwidth=2       " using at least 2 columns (+ 1 space) for number column

"" automatically reload _vimrc on save
"autocmd! bufwritepost _vimrc source %

" ==========================================================
"  Source code settings
" ==========================================================

" Allow visual break on ony character (nolinebreak).
" Highlight 80th column and set textwidth to 79 (important e.g. for comments
" to automatically break).
autocmd FileType python,java,javascript,haskell
    \  setlocal nolinebreak
    \ | setlocal colorcolumn=80
    \ | setlocal textwidth=79

" Note: comments can be aligned properly using 'gq' command.

" ==========================================================
"  Search
" ==========================================================
set ignorecase  " Default to using case insensitive searches,
set smartcase   " unless uppercase letters are used in the regex.
set incsearch   " Incrementally search while typing a /regex

" experimentalne: zvyraznovani vyhledavani
set hlsearch    " Highlight searches by default.

"Turn off highlighting on entering insert mode
nnoremap i :noh<CR>i

"Experimental : Turn off highlighting on pressing <enter>
nnoremap <CR>  :noh<CR>

"Experimental : very magic search by defaut
nnoremap / /\v
cnoremap %s/ %s/\v

" ==========================================================
"  Spell check
" ==========================================================

" switch on/off by set spell / set nospell
" jump to next error: ]s
" add word to dictionary: zg (or 2zg to czech dictionary)
set spelllang=en,cs
set spellfile=~/.vim/spell/en.utf-8.add,~/.vim/spell/cs.utf-8.add

" ==========================================================
"  Mappings
" ==========================================================

" remap qq to escape from insert mode
inoremap kj <Esc>


" make Y behave like other capitals, i.e. copy to the end of the line
map Y y$

" improve up/down movement on wrapped lines
nnoremap j gj
nnoremap k gk


" ==========================================================
"  Buffers, tabs, splits
" ==========================================================
" When a tab is closed, remove the buffer.
set nohidden

" Open splits below and on the right.
set splitbelow splitright

" Navigating through splits with CTRL+j/k/l/m.
map <c-j> <c-w>j
map <c-k> <c-w>k
map <c-l> <c-w>l
map <c-h> <c-w>h

" Swap the splits (cannot use <c-r> = redo).
map <c-s> <c-w>r

" Remap ctrl-w as I use it for closing terminal tabs.
:nnoremap <leader>w <c-w>

" ==========================================================
"  Commands
" ==========================================================

" show whitespace (tabes and new lines)
nmap <leader>i :set list!<CR>

" ==========================================================
"  File Execution/Compilation (F5)
" ==========================================================

" Python: save and execute
autocmd FileType python map <buffer> <f5> :w<cr>:!python3 %<cr>

" AsciiDoc: save and convert to PDF
autocmd FileType asciidoc map <buffer> <f5> :w<cr>:!a2pdf %<cr>

"" LaTeX: call make (cc -> show the first error or No errors message)
"autocmd FileType tex map <buffer> <f5> :w<cr>:silent make\|redraw!\|cw<cr>

" ==========================================================
"  Solarized + theme options
" ==========================================================
set background=light
colorscheme solarized

" highlight current line
set cursorline

" toggle light and dark background with F4
call togglebg#map("<F4>")

" ==========================================================
"  AirLine
" ==========================================================

" Display the airline all the time.
set laststatus=2
" Avoid pause when leaving insert mode.
set ttimeoutlen=50

" set symbols
let g:airline_powerline_fonts = 0
if !exists('g:airline_symbols')
    let g:airline_symbols = {}
endif
let g:airline_left_sep = ''
let g:airline_right_sep = ''
let g:airline_symbols.linenr = ''
let g:airline_symbols.branch = ''

" (Temporarily) removed due to errors it causes when opening new tabs.
"" Top line (for tabs and buffers)
"let g:airline#extensions#tabline#enabled = 1
"let g:airline#extensions#tabline#tab_min_count = 2
"let g:airline#extensions#tabline#show_buffers = 1
"let g:airline#extensions#tabline#buffer_min_count = 2
"let g:airline#extensions#tabline#left_sep = ' '
"let g:airline#extensions#tabline#left_alt_sep = '|'
"let g:airline#extensions#tabline#tab_nr_type = 1 " tab number

" Integration of other plugins
let g:airline#extensions#syntastic#enabled = 1
let g:airline#extensions#virtualenv#enabled = 1
let g:airline#extensions#branch#enabled = 1

" ==========================================================
"  NerdTree
" ==========================================================
map <C-o> :NERDTreeToggle<CR>
" C-h: go back from the split to the NerdTree (works for any vsplits)
" q: close NERDTree

" ==========================================================
"  Syntastic
" ==========================================================

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 0
let g:syntastic_check_on_open = 0
let g:syntastic_check_on_wq = 0
let g:syntastic_error_symbol = 'E'
let g:syntastic_style_error_symbol = 'e'
let g:syntastic_warning_symbol = 'W'
let g:syntastic_style_warning_symbol = 'w'
let g:syntastic_python_checkers = ['pylint']
let g:syntastic_javascript_checkers = ['eslint']
" use local eslint if it exists
if executable('./node_modules/.bin/eslint')
  let b:syntastic_javascript_eslint_exec = './node_modules/.bin/eslint'
endif
let g:syntastic_mode_map = {
    \ "mode": "passive",
    \ "active_filetypes": ["python", "javascript"] }
map ]l :lnext<CR>
map [l :lprevious<CR>
  " if there is only 1 error, :ll can be used to jump on the corresponding line


" ==========================================================
"  Snippets
" ==========================================================
" reserved shortucuts: <C-q|w|e|r>
let g:UltiSnipsExpandTrigger="<C-e>"
let g:UltiSnipsJumpForwardTrigger="<C-w>"
let g:UltiSnipsJumpBackwardTrigger="<C-q>"
let g:UltiSnipsListSnippets="<C-r>"  " works only in insert-mode
let g:UltiSnipsSnippetDirectories=["my-snippets", "UltiSnips"]

" ==========================================================
"  Comment/uncomment code
" ==========================================================
" Using Plugin 'preservim/nerdcommenter'
" ,cl and ,cu

" ==========================================================
"  Tab completion
" ==========================================================
" Using Plugin 'ervandew/supertab' to complete using tab.
" Recognize when to complete paths, attribute access etc.
let g:SuperTabDefaultCompletionType = "context"

" Tab goes top to bottom, Shift-Tabe bottom to top.
"let g:SuperTabDefaultCompletionType = "<c-n>"
let g:SuperTabContextDefaultCompletionType = "<c-n>"

" ==========================================================
"  Unsorted and experimental
" ==========================================================