windows.vim

function! s:get_win_info() abort
	let l:win_info_list = []
	for win in getwininfo()
		let l:tmp_file = split(win.variables.netrw_prvfile, '/')
		if empty(tmp_file)
			let l:file = '[No Name]'
		else
			let l:file = l:tmp_file[len(tmp_file)-1:][0]
		endif
		call add(l:win_info_list, {'winid':win.winid, 'file': l:file})
	endfor
	return l:win_info_list
endfunction

function! s:goto_window(ctx, id, idx) abort
	if a:idx ==# -1
		return
	endif
	call win_gotoid(a:ctx[a:idx-1].winid)
endfunction

function! s:win_list() abort
	let l:win_info = s:get_win_info()
	let l:view_content = []
	let l:min_width = 40

	for win in l:win_info
		call add(l:view_content, win.winid . "\t" . win.file)
		if len(win.file) > l:min_width
			let l:min_width = len(win.file)
		endif
	endfor
	call popup_menu(l:view_content, {
				\ 'border': [],
                \ 'borderchars': ['-','|','-','|','+','+','+','+'],
				\ 'padding': [0,0,0,0],
				\ 'filter': 'popup_filter_menu',
				\ 'callback': function('s:goto_window', [l:win_info]),
				\ 'minwidth': l:min_width,
				\ })
endfunction

command! Windows call s:win_list()