support view scope in status line

README.md

@@ -148,6 +148,31 @@ let g:lightline = {
       \ },
       \ }
 ```
+### Show the nearest method/function's scope in the statusline
+
+```vim
+function! NearestScope() abort
+  let info = get(b:, 'vista_cursor_info', {})
+  return get(info, 'scope', '')
+endfunction
+
+set statusline+=%{NearestScope()}
+```
+#### [lightline.vim](https://github.com/itchyny/lightline.vim)
+
+```vim
+let g:lightline = {
+	  \...
+      \ 'active': {
+      \   'left': [ [...],
+      \             [ ..., 'scope', 'method'] ]
+      \ },
+      \ 'component_function': {
+	  \	  ...
+      \   'scope': 'NearestScope',
+      \ },
+      \ }
+```
 
 ### Commands
 

autoload/vista/autocmd.vim

@@ -152,5 +152,8 @@ function! vista#autocmd#InitMOF() abort
   augroup VistaMOF
     autocmd!
     autocmd CursorMoved * call vista#cursor#FindNearestMethodOrFunction()
+    if g:vista_update_scope_on_cursor_move
+      autocmd CursorMoved * call vista#cursor#FindDetailWithDelay()
+    endif
   augroup END
 endfunction

autoload/vista/cursor.vim

@@ -6,6 +6,7 @@ scriptencoding utf8
 
 let s:find_timer = -1
 let s:cursor_timer = -1
+let s:find_detail_timer = -1
 let s:highlight_timer = -1
 
 let s:echo_cursor_opts = ['echo', 'floating_win', 'scroll', 'both']
@@ -28,6 +29,10 @@ function! s:StopCursorTimer() abort
   call s:GenericStopTimer('s:cursor_timer')
 endfunction
 
+function! s:StopFindDetailTimer() abort
+  call s:GenericStopTimer('s:find_detail_timer')
+endfunction
+
 function! s:StopHighlightTimer() abort
   call s:GenericStopTimer('s:highlight_timer')
 endfunction
@@ -203,6 +208,48 @@ function! vista#cursor#ShowDetailWithDelay() abort
         \ )
 endfunction
 
+" Show the detail of current tag/symbol under cursor.
+function! vista#cursor#FindDetail(_timer) abort
+  if empty(getline('.'))
+        \ || !exists('g:vista')
+        \ || !has_key(g:vista, 'functions')
+        \ || !has_key(g:vista, 'source')
+    call setbufvar(g:vista.source.bufnr, 'vista_cursor_info', {})
+    return
+  endif
+
+  let found = vista#util#BinarySearch(g:vista.raw, line('.'), 'line', '')
+  if empty(found)
+    let found = {}
+  endif
+
+  "echo found
+  let scope = vista#util#Trim(get(found, 'scope', ''))
+  if !empty(scope)
+    let scopeKind = get(found, 'scopeKind', '')
+    if !empty(scopeKind)
+      let scope = scopeKind.' '.scope
+    endif
+    let access = get(found, 'access', '')
+    if !empty(access)
+      let scope = scope.' '.access
+    endif
+  else
+    let scope = vista#util#Trim(get(found, 'namespace', '').' '.get(found, 'class', ''))
+  endif
+  let symbolname = vista#util#Trim(get(found, 'name', ''))
+  call setbufvar(g:vista.source.bufnr, 'vista_cursor_info', {'scope': scope, 'symbol': symbolname})
+
+endfunction
+
+function! vista#cursor#FindDetailWithDelay() abort
+  call s:StopFindDetailTimer()
+  let s:find_detail_timer = timer_start(
+        \ g:vista_update_scope_delay,
+        \ function('vista#cursor#FindDetail'),
+        \ )
+endfunction
+
 " This happens on calling `:Vista show` but the vista window is still invisible.
 function! vista#cursor#ShowTagFor(lnum) abort
   if !s:HasVlnum()

plugin/vista.vim

@@ -18,6 +18,8 @@ let g:vista_fold_toggle_icons = get(g:, 'vista_fold_toggle_icons', ['▼', '▶'
 let g:vista_update_on_text_changed = get(g:, 'vista_update_on_text_changed', 0)
 let g:vista_update_on_text_changed_delay = get(g:, 'vista_update_on_text_changed_delay', 500)
 let g:vista_echo_cursor = get(g:, 'vista_echo_cursor', 1)
+let g:vista_update_scope_on_cursor_move = get(g:, 'vista_update_scope_on_cursor_move', 1)
+let g:vista_update_scope_delay = get(g:, 'vista_update_scope_delay', 300)
 let g:vista_no_mappings = get(g:, 'vista_no_mappings', 0)
 let g:vista_stay_on_open = get(g:, 'vista_stay_on_open', 1)
 let g:vista_close_on_jump =  get(g:, 'vista_close_on_jump', 0)