Add background searching feature

autoload/SpaceVim/layers/core/statusline.vim

@@ -241,6 +241,7 @@ function! s:active() abort
     if index(s:loaded_sections, 'version control info') != -1
         call add(lsec, s:git_branch())
     endif
+    call add(lsec, SpaceVim#plugins#searcher#count())
     if index(s:loaded_sections, 'battery status') != -1
         call add(rsec, s:battery_status())
     endif

autoload/SpaceVim/mapping/space.vim

@@ -105,6 +105,11 @@ function! SpaceVim#mapping#space#init() abort
   call SpaceVim#mapping#space#def('nnoremap', ['s', 'p'], 'Unite grep:.', 'grep in project', 1)
   call SpaceVim#mapping#space#def('nnoremap', ['s', 'P'], "execute 'Unite grep:.::' . expand(\"<cword>\") . '  -start-insert'",
         \ 'grep in project', 1)
+  " Searching background
+  call SpaceVim#mapping#space#def('nnoremap', ['s', 'j'], 'call SpaceVim#plugins#searcher#find()', 'Background search keywords in project', 1)
+  call SpaceVim#mapping#space#def('nnoremap', ['s', 'J'], 'call SpaceVim#plugins#searcher#find(expand("<cword>"))',
+        \ 'Background search cursor words in project', 1)
+  call SpaceVim#mapping#space#def('nnoremap', ['s', 'l'], 'call SpaceVim#plugins#searcher#list()', 'List all searching results', 1)
 
   " Searching tools
   " ag

autoload/SpaceVim/plugins/searcher.vim

@@ -0,0 +1,47 @@
+let s:rst = []
+function! SpaceVim#plugins#searcher#find(...)
+    if a:0 == 0
+        let expr = input('search expr: ')
+    else
+        let expr = a:1
+    endif
+    call jobstart(['ag', expr], {
+                \ 'on_stdout' : function('s:search_stdout'),
+                \ 'on_exit' : function('s:search_exit'),
+                \ })
+endfunction
+function! s:search_stdout(id, data, event) abort
+    for data in a:data
+        let info = split(data, '\:\d\+\:')
+        if len(info) == 2
+            let [fname, text] = info
+            let lnum = matchstr(data, '\:\d\+\:')[1:-2]
+            call add(s:rst, {
+                        \ 'filename' : fnamemodify(fname, ':p'),
+                        \ 'lnum' : lnum,
+                        \ 'text' : text,
+                        \ })
+        endif
+    endfor
+endfunction
+
+function! s:search_exit(id, data, event) abort
+    let &l:statusline = SpaceVim#layers#core#statusline#get(1)
+endfunction
+
+
+function! SpaceVim#plugins#searcher#list()
+    call setqflist(s:rst)
+    let s:rst = []
+    copen
+endfunction
+
+function! SpaceVim#plugins#searcher#count()
+    if empty(s:rst)
+        return ''
+    else
+        return ' ' . len(s:rst) . ' items '
+    endif
+endfunction
+
+

init.vim

@@ -1 +1,2 @@
 execute 'source' fnamemodify(expand('<sfile>'), ':h').'/config/main.vim'
+" abfgkprt