Change GoImplements view configuration from mode to listtype fatih#3319

autoload/go/implements.vim

@@ -11,17 +11,16 @@ function! go#implements#Implements(selected) abort
     if !go#config#GoplsEnabled()
       call go#util#EchoError("go_implements_mode is 'gopls', but gopls is disabled")
     endif
+    let l:listtype = go#list#Type("GoImplements") 
+    if l:listtype == "fzf"
+      call fzf#implements#cmd() 
+      return
+    endif
     let [l:line, l:col] = getpos('.')[1:2]
     let [l:line, l:col] = go#lsp#lsp#Position(l:line, l:col)
     let l:fname = expand('%:p')
     call go#lsp#Implements(l:fname, l:line, l:col, funcref('s:parse_output'))
     return
-  elseif l:mode == 'fzf'
-    if !go#config#GoplsEnabled()
-      call go#util#EchoError("go_implements_mode is 'fzf', but gopls is disabled")
-    endif
-    call fzf#implements#cmd() 
-    return
   else
     call go#util#EchoWarning('unknown value for g:go_implements_mode')
   endif