How to open or close NERDTree and Tagbar with <leader>\?

I want <leader>\ to open or close NERDTree and Tagbar, under the following conditions:

1. Only close both if NERDTree and Tagbar are both opened
2. Open both if NERDTree and Tagbar are closed OR if one is already opened

So far, in VIMRC, I have:

nmap <leader>\ :NERDTreeToggle<CR> :TagbarToggle<CR>

Which doesn't exactly work, since i开发者_C百科f one is opened, and the other closed. It would open the one that was closed and close the one that was opened.

How can this be achieved?

---

You need to use a function that checks whether the plugin windows are open or not and then acts accordingly. This should work and will also jump back to the window that you started in:

function! ToggleNERDTreeAndTagbar()
    let w:jumpbacktohere = 1

    " Detect which plugins are open
    if exists('t:NERDTreeBufName')
        let nerdtree_open = bufwinnr(t:NERDTreeBufName) != -1
    else
        let nerdtree_open = 0
    endif
    let tagbar_open = bufwinnr('__Tagbar__') != -1

    " Perform the appropriate action
    if nerdtree_open && tagbar_open
        NERDTreeClose
        TagbarClose
    elseif nerdtree_open
        TagbarOpen
    elseif tagbar_open
        NERDTree
    else
        NERDTree
        TagbarOpen
    endif

    " Jump back to the original window
    for window in range(1, winnr('$'))
        execute window . 'wincmd w'
        if exists('w:jumpbacktohere')
            unlet w:jumpbacktohere
            break
        endif
    endfor
endfunction
nnoremap <leader>\ :call ToggleNERDTreeAndTagbar()<CR>

---

hmm... this works for me in vimrc

The toggle option checks if the window already exists, so no custom function needed (@JanLarres or one of the contributors) must have added it to TagBar :D

" NERDTree
map <leader>n :NERDTreeToggle<CR>

" TagBar
map <leader>t :TagbarToggle<CR>