refactor(#2875): multi instance renderer

Author: alex-courtis

lua/nvim-tree/actions/reloaders.lua

@@ -0,0 +1,73 @@
+local git = require "nvim-tree.git"
+local view = require "nvim-tree.view"
+local core = require "nvim-tree.core"
+local explorer_node = require "nvim-tree.explorer.node"
+local Iterator = require "nvim-tree.iterators.node-iterator"
+
+local M = {}
+
+---@param explorer Explorer|nil
+---@param projects table
+local function refresh_nodes(explorer, projects)
+  Iterator.builder({ explorer })
+    :applier(function(n)
+      if n.nodes then
+        local toplevel = git.get_toplevel(n.cwd or n.link_to or n.absolute_path)
+        if explorer then
+          explorer:reload(n, projects[toplevel] or {})
+        end
+      end
+    end)
+    :recursor(function(n)
+      return n.group_next and { n.group_next } or (n.open and n.nodes)
+    end)
+    :iterate()
+end
+
+---@param parent_node Node|nil
+---@param projects table
+function M.reload_node_status(parent_node, projects)
+  if parent_node == nil then
+    return
+  end
+
+  local toplevel = git.get_toplevel(parent_node.absolute_path)
+  local status = projects[toplevel] or {}
+  for _, node in ipairs(parent_node.nodes) do
+    explorer_node.update_git_status(node, explorer_node.is_git_ignored(parent_node), status)
+    if node.nodes and #node.nodes > 0 then
+      M.reload_node_status(node, projects)
+    end
+  end
+end
+
+local event_running = false
+function M.reload_explorer()
+  local explorer = core.get_explorer()
+  if event_running or not explorer or vim.v.exiting ~= vim.NIL then
+    return
+  end
+  event_running = true
+
+  local projects = git.reload()
+  refresh_nodes(explorer, projects)
+  if view.is_visible() then
+    explorer.renderer:draw()
+  end
+  event_running = false
+end
+
+function M.reload_git()
+  local explorer = core.get_explorer()
+  if not explorer or not git.config.git.enable or event_running then
+    return
+  end
+  event_running = true
+
+  local projects = git.reload()
+  M.reload_node_status(explorer, projects)
+  explorer.renderer:draw()
+  event_running = false
+end
+
+return M