[RFC] Replace UI

.travis.yml

@@ -1,10 +1,10 @@
-sudo: false
-dist: trusty
+dist: xenial
 
 language: python
 
 python:
   - 3.6
+  - 3.7
 
 install:
   - eval "$(curl -Ss https://raw.githubusercontent.com/neovim/bot-ci/master/scripts/travis-setup.sh) nightly-x64"

Makefile

@@ -5,11 +5,7 @@ export THEMIS_HOME := ./vim-themis
 
 
 install: vim-themis
-	pip install pynvim --upgrade
-	pip install pytest --upgrade
-	pip install flake8 --upgrade
-	pip install mypy --upgrade
-	pip install vim-vint --upgrade
+	pip install --upgrade -r test/requirements.txt
 
 lint:
 	vint --version

README.md

@@ -3,6 +3,9 @@ denite.nvim
 
 [![Build Status](https://travis-ci.org/Shougo/denite.nvim.svg?branch=master)](https://travis-ci.org/Shougo/denite.nvim)
 
+Note: Denite.nvim does not define any of default mappings.  You need to define
+them.
+
 
 ## About
 
@@ -88,9 +91,28 @@ You must install "pynvim" module with pip
 **Note:** You need to do 1. and 2. with the common-arch files (x86 or x64).
 
 
+## Examples
+
+```vim
+" Define mappings
+autocmd FileType denite call s:denite_my_settings()
+function! s:denite_my_settings() abort
+  nnoremap <silent><buffer><expr> <CR>
+  \ denite#do_map('do_action')
+  nnoremap <silent><buffer><expr> d
+  \ denite#do_map('do_action', 'delete')
+  nnoremap <silent><buffer><expr> p
+  \ denite#do_map('do_action', 'preview')
+  nnoremap <silent><buffer><expr> q
+  \ denite#do_map('quit')
+  nnoremap <silent><buffer><expr> i
+  \ denite#do_map('open_filter_buffer')
+  nnoremap <silent><buffer><expr> <Space>
+  \ denite#do_map('toggle_select').'j'
+endfunction
+```
+
+
 ## Screenshots
 
-![file/rec source](https://user-images.githubusercontent.com/13142418/34324674-b8ddd5b8-e840-11e7-9b77-d94e1b084bda.gif)
-![SpaceVim Guide](https://user-images.githubusercontent.com/13142418/34324752-e5a89900-e842-11e7-9f87-6d8789ba3871.gif)
-![colorscheme source](https://user-images.githubusercontent.com/13142418/34324786-f4dd39a2-e843-11e7-97ef-7a48ee04d27b.gif)
-![floating window](https://user-images.githubusercontent.com/1239245/54329573-8b047380-4655-11e9-8b9a-ab4a91f4768f.gif)
+![denite new UI](https://user-images.githubusercontent.com/1239245/58742567-a155ea80-8460-11e9-9925-09082def2c80.gif)

autoload/denite.vim

@@ -22,18 +22,6 @@ function! denite#get_status(name) abort
   return !exists('b:denite_statusline') ? '' :
         \ get(b:denite_statusline, a:name, '')
 endfunction
-function! denite#get_status_mode() abort
-  return denite#get_status('mode')
-endfunction
-function! denite#get_status_sources() abort
-  return denite#get_status('sources')
-endfunction
-function! denite#get_status_path() abort
-  return denite#get_status('path')
-endfunction
-function! denite#get_status_linenr() abort
-  return denite#get_status('linenr')
-endfunction
 
 function! s:start(sources, user_context) abort
   if denite#initialize()
@@ -46,10 +34,52 @@ function! s:start(sources, user_context) abort
   call setpos('.', pos)
 
   let args = [a:sources, a:user_context]
-  return denite#util#rpcrequest('_denite_start', args)
+  return denite#util#rpcrequest('_denite_start', args, v:false)
 endfunction
 
 function! denite#do_action(context, action_name, targets) abort
   let args = [a:context, a:action_name, a:targets]
-  return denite#util#rpcrequest('_denite_do_action', args)
+  return denite#util#rpcrequest('_denite_do_action', args, v:false)
+endfunction
+
+function! denite#do_map(name, ...) abort
+  let args = denite#util#convert2list(get(a:000, 0, []))
+  let esc = (mode() ==# 'i' ? "\<C-o>" : '')
+  return printf(esc . ":\<C-u>call denite#_call_map(%s, %s, %s)\<CR>",
+        \ string(a:name), 'v:false', string(args))
+endfunction
+function! denite#_call_map(name, is_async, args) abort
+  let is_filter = &l:filetype ==# 'denite-filter'
+
+  if is_filter
+    call denite#filter#_move_to_parent(a:is_async)
+  endif
+
+  if &l:filetype !=# 'denite'
+    return
+  endif
+
+  let args = denite#util#convert2list(a:args)
+
+  call denite#util#rpcrequest(
+        \ (a:is_async ? '_denite_do_async_map' : '_denite_do_map'),
+        \ [bufnr('%'), a:name, args], a:is_async)
+
+  if is_filter
+    let denite_statusline = get(b:, 'denite_statusline', {})
+
+    call win_gotoid(g:denite#_filter_winid)
+
+    if &l:filetype ==# 'denite-filter'
+      let b:denite_statusline = denite_statusline
+    else
+      stopinsert
+    endif
+  endif
+endfunction
+function! denite#call_map(name, ...) abort
+  call denite#_call_map(a:name, v:false, get(a:000, 0, []))
+endfunction
+function! denite#call_async_map(name, ...) abort
+  call denite#_call_map(a:name, v:true, get(a:000, 0, []))
 endfunction

autoload/denite/_main.py

@@ -0,0 +1,62 @@
+# ============================================================================
+# FILE: _main.py
+# AUTHOR: Shougo Matsushita <Shougo.Matsu at gmail.com>
+# License: MIT license
+# ============================================================================
+
+import sys
+import io
+
+from importlib.util import find_spec
+if find_spec('pynvim'):
+    from pynvim import attach
+else:
+    from neovim import attach
+
+
+def attach_vim(serveraddr):
+    if len(serveraddr.split(':')) == 2:
+        serveraddr, port = serveraddr.split(':')
+        port = int(port)
+        vim = attach('tcp', address=serveraddr, port=port)
+    else:
+        vim = attach('socket', path=serveraddr)
+
+    # sync path
+    for path in vim.call(
+            'globpath', vim.options['runtimepath'],
+            'rplugin/python3', 1).split('\n'):
+        sys.path.append(path)
+    # Remove current path
+    del sys.path[0]
+
+    return vim
+
+
+class RedirectStream(io.IOBase):
+    def __init__(self, handler):
+        self.handler = handler
+
+    def write(self, line):
+        self.handler(line)
+
+    def writelines(self, lines):
+        self.handler('\n'.join(lines))
+
+
+def main(serveraddr):
+    vim = attach_vim(serveraddr)
+    from denite.child import Child
+    from denite.util import error_tb
+    stdout = sys.stdout
+    sys.stdout = RedirectStream(lambda data: vim.out_write(data))
+    sys.stderr = RedirectStream(lambda data: vim.err_write(data))
+    try:
+        child = Child(vim)
+        child.main_loop(stdout)
+    except Exception as exc:
+        error_tb(vim, 'Error in child: %r' % exc)
+
+
+if __name__ == '__main__':
+    main(sys.argv[1])

autoload/denite/custom.vim

@@ -118,11 +118,14 @@ endfunction
 function! denite#custom#_call_action(kind, name, context) abort
   let custom = denite#custom#_get().action
 
+  let new_context = {}
   for key in denite#util#split(a:kind)
     if has_key(custom, key) && has_key(custom[key], a:name)
-      call call(custom[key][a:name][0], [a:context])
+      let new_context = call(custom[key][a:name][0], [a:context])
     endif
   endfor
+
+  return new_context
 endfunction
 
 function! s:set_custom(dest, name_or_dict, value) abort