refactor(#2942): multi instance: move utils functions to Explorer methods (#3200)

* refactor(#2942): multi instance: move find_node_line to Explorer

* refactor(#2942): multi instance: move get_node_from_path to Explorer

* refactor(#2942): multi instance: move focus_file to Explorer

* refactor(#2942): multi instance: move focus_node_or_parent to Explorer

* refactor(#2942): multi instance: move get_node_from_path to Explorer

* refactor(#2942): multi instance: move find_node to Explorer

* refactor(#2942): multi instance: move get_nodes_by_line to Explorer

* refactor(#2942): multi instance: remove unnecessary focus_file

* refactor(#2942): style

lua/nvim-tree/actions/moves/item.lua

@@ -1,4 +1,3 @@
-local utils = require("nvim-tree.utils")
 local view = require("nvim-tree.view")
 local core = require("nvim-tree.core")
 local diagnostics = require("nvim-tree.diagnostics")
@@ -36,7 +35,7 @@ end
 ---@param skip_gitignored boolean? default false
 local function move(explorer, where, what, skip_gitignored)
   local first_node_line = core.get_nodes_starting_line()
-  local nodes_by_line = utils.get_nodes_by_line(explorer.nodes, first_node_line)
+  local nodes_by_line = explorer:get_nodes_by_line(first_node_line)
   local iter_start, iter_end, iter_step, cur, first, nex
 
   local cursor = explorer:get_cursor_position()
@@ -191,7 +190,7 @@ local function move_prev_recursive(explorer, what, skip_gitignored)
       if node_init.name == ".." then -- root node
         view.set_cursor({ 1, 0 })    -- move to root node (position 1)
       else
-        local node_init_line = utils.find_node_line(node_init)
+        local node_init_line = explorer:find_node_line(node_init)
         if node_init_line < 0 then
           return
         end

lua/nvim-tree/actions/moves/parent.lua

@@ -1,6 +1,4 @@
 local view = require("nvim-tree.view")
-local utils = require("nvim-tree.utils")
-
 local DirectoryNode = require("nvim-tree.node.directory")
 
 local M = {}
@@ -29,7 +27,7 @@ function M.fn(should_close)
       return
     end
 
-    local _, line = utils.find_node(parent.explorer.nodes, function(n)
+    local _, line = parent.explorer:find_node(function(n)
       return n.absolute_path == parent.absolute_path
     end)
 

lua/nvim-tree/actions/moves/sibling.lua

@@ -1,4 +1,3 @@
-local utils = require("nvim-tree.utils")
 local core = require("nvim-tree.core")
 local Iterator = require("nvim-tree.iterators.node-iterator")
 
@@ -12,9 +11,14 @@ function M.fn(direction)
       return
     end
 
+    local explorer = core.get_explorer()
+    if not explorer then
+      return
+    end
+
     local first, last, next, prev = nil, nil, nil, nil
     local found = false
-    local parent = node.parent or core.get_explorer()
+    local parent = node.parent or explorer
     Iterator.builder(parent and parent.nodes or {})
       :recursor(function()
         return nil
@@ -45,7 +49,7 @@ function M.fn(direction)
     end
 
     if target_node then
-      utils.focus_file(target_node.absolute_path)
+      explorer:focus_node_or_parent(target_node)
     end
   end
 end