chore: refacto file placement of renderer components

lua/nvim-tree/renderer/components/padding.lua

@@ -0,0 +1,53 @@
+local M = {}
+
+function M.get_padding(depth)
+  return string.rep(" ", depth)
+end
+
+local function get_padding_arrows(icon_state)
+  return function(depth, _, _, node)
+    if node.nodes then
+      local icon = icon_state.icons.folder_icons[node.open and "arrow_open" or "arrow_closed"]
+      return string.rep(" ", depth - 2) .. icon .. " "
+    end
+    return string.rep(" ", depth)
+  end
+end
+
+local function get_padding_indent_markers(depth, idx, tree, _, markers)
+  local padding = ""
+  if depth ~= 0 then
+    local rdepth = depth / 2
+    markers[rdepth] = idx ~= #tree.nodes
+    for i = 1, rdepth do
+      if idx == #tree.nodes and i == rdepth then
+        padding = padding .. M.config.indent_markers.icons.corner
+      elseif markers[i] then
+        padding = padding .. M.config.indent_markers.icons.edge
+      else
+        padding = padding .. M.config.indent_markers.icons.none
+      end
+    end
+  end
+  return padding
+end
+
+function M.reload_padding_function()
+  local icon_state = require("nvim-tree.renderer.icon-config").get_config()
+
+  if icon_state.show_folder_icon and icon_state.show_folder_arrows then
+    M.get_padding = get_padding_arrows(icon_state)
+  end
+
+  if M.config.indent_markers.enable then
+    M.get_padding = get_padding_indent_markers
+  end
+end
+
+function M.setup(opts)
+  M.config = {
+    indent_markers = opts.renderer.indent_markers,
+  }
+end
+
+return M