feat(#1851): persist bookmarks

lua/nvim-tree/explorer/filters.lua

@@ -208,8 +208,8 @@ function Filters:prepare(project)
 
   local explorer = require("nvim-tree.core").get_explorer()
   if explorer then
-    for _, node in pairs(explorer.marks:list()) do
-      status.bookmarks[node.absolute_path] = node.type
+    for key, node in pairs(explorer.marks.marks) do
+        status.bookmarks[key] = node
     end
   end
 

lua/nvim-tree/marks/init.lua

@@ -22,14 +22,6 @@ local Marks = Class:extend()
 ---@class (exact) MarksArgs
 ---@field explorer Explorer
 
----@protected
----@param args MarksArgs
-function Marks:new(args)
-  self.explorer = args.explorer
-
-  self.marks = {}
-end
-
 ---Clear all marks and reload if watchers disabled
 ---@private
 function Marks:clear_reload()
@@ -46,22 +38,6 @@ function Marks:clear()
   self.explorer.renderer:draw()
 end
 
----@public
----@param node Node
-function Marks:toggle(node)
-  if node.absolute_path == nil then
-    return
-  end
-
-  if self:get(node) then
-    self.marks[node.absolute_path] = nil
-  else
-    self.marks[node.absolute_path] = node
-  end
-
-  self.explorer.renderer:draw()
-end
-
 ---Return node if marked
 ---@public
 ---@param node Node
@@ -243,6 +219,57 @@ function Marks:navigate_next()
   self:navigate(false)
 end
 
+
+local function save_bookmarks(marks)
+  local storepath = vim.fn.stdpath("data") .. "/nvim-tree-bookmarks.json"
+  local file = io.open(storepath, "w")
+  if file then
+    local data = {}
+    for path, _ in pairs(marks) do
+      table.insert(data, path)
+    end
+    file:write(vim.fn.json_encode(data))
+    file:close()
+  end
+end
+
+local function load_bookmarks()
+  local storepath = vim.fn.stdpath("data") .. "/nvim-tree-bookmarks.json"
+  local file = io.open(storepath, "r")
+  if file then
+    local content = file:read("*all")
+    file:close()
+    if content and content ~= "" then
+      local data = vim.fn.json_decode(content)
+      local marks = {}
+      for _, path in ipairs(data) do
+        marks[path] = true -- or reconstruct node if needed
+      end
+      return marks
+    end
+  end
+  return {}
+end
+
+function Marks:new(args)
+  self.explorer = args.explorer
+  self.marks = load_bookmarks() or {}
+end
+
+function Marks:toggle(node)
+  if node.absolute_path == nil then
+    return
+  end
+
+  if self:get(node) then
+    self.marks[node.absolute_path] = nil
+  else
+    self.marks[node.absolute_path] = node
+  end
+
+  save_bookmarks(self.marks)
+  self.explorer.renderer:draw()
+end
 ---Prompts for selection of a marked node, sorted by absolute paths.
 ---A folder will be focused, a file will be opened.
 ---@public