make listbox usable in insert <expr> mode

Author: skywind3000

autoload/quickui/listbox.vim

@@ -87,7 +87,9 @@ endfunc
 " reposition text offset
 "----------------------------------------------------------------------
 function! quickui#listbox#reposition()
-exec 'normal! zz'
+if mode() != 'i'
+exec 'normal! zz'
+endif
 let height = winheight(0)
 let size = line('$')
 let curline = line('.')
@@ -178,9 +180,11 @@ function! s:vim_create_listbox(textlist, opts)
 if get(a:opts, 'index', 0) >= 0
 let moveto = get(a:opts, 'index', 0) + 1
 call popup_show(winid)
-call win_execute(winid, 'normal! G')
-call win_execute(winid, ':' . moveto)
-call win_execute(winid, 'normal! G')
+if mode() != 'i'
+call win_execute(winid, 'normal! G')
+call win_execute(winid, ':' . moveto)
+call win_execute(winid, 'normal! G')
+endif
 call win_execute(winid, ':' . moveto)
 call win_execute(winid, 'call quickui#listbox#reposition()')
 endif
@@ -363,7 +367,9 @@ function! quickui#listbox#cursor_movement(where)
 let curline = endline
 endif
 noautocmd exec ":" . curline
-noautocmd exec "normal! 0"
+if mode() != 'i'
+noautocmd exec "normal! 0"
+endif
 endfunc