refactor(#2826): singleton View class, WIP

lua/nvim-tree/actions/node/open-file.lua

@@ -239,7 +239,7 @@ local function on_preview(buf_loaded)
       once = true,
     })
   end
-  view.focus()
+  view.View:focus()
 end
 
 local function get_target_winid(mode)

lua/nvim-tree/actions/tree/find-file.lua

@@ -45,7 +45,7 @@ function M.fn(opts)
     -- focus
     if opts.focus then
       lib.set_target_win()
-      view.focus()
+      view.View:focus()
     end
   elseif opts.open then
     -- open

lua/nvim-tree/actions/tree/open.lua

@@ -26,7 +26,7 @@ function M.fn(opts)
   if view.View:is_visible() then
     -- focus
     lib.set_target_win()
-    view.focus()
+    view.View:focus()
   else
     -- open
     lib.open({