improve: divide options into core and etc

runtime/lua/tree.lua

@@ -32,6 +32,16 @@ end
 
 local M = {}
 
+local default_etc_options = {
+  winheight=30,
+  winwidth=50,
+  split='no', -- {"vertical", "horizontal", "no", "tab", "floating"}
+  winrelative='editor',
+  buffer_name='default',
+  direction='',
+  search='',
+  new=false,
+}
 --- Resume tree window.
 -- If the window corresponding to bufnrs is available, goto it;
 -- otherwise, create a new window.
@@ -71,36 +81,38 @@ function M.resume(bufnrs, cfg)
   end
 
   local bufnr = treebufs[1]
+  local etc = M.etc_options[bufnr]
   local resize_cmd, str
   -- local no_split = false
   -- if cfg.split == 'no' or cfg.split == 'tab' or cfg.split == 'floating' then
   --     no_split = true
   -- end
   local vertical = ''
   local command = 'sbuffer'
-  if cfg.split == 'tab' then
+  if etc.split == 'tab' then
     cmd 'tabnew'
   end
-  if cfg.split == 'vertical' then
+  if etc.split == 'vertical' then
     vertical = 'vertical'
-    resize_cmd = string.format('vertical resize %d', cfg['winwidth'])
-  elseif cfg.split == 'horizontal' then
-    resize_cmd = string.format('resize %d', cfg.winheight)
-  elseif cfg.split == 'floating' then
+    resize_cmd = string.format('vertical resize %d', etc.winwidth)
+  elseif etc.split == 'horizontal' then
+    resize_cmd = string.format('resize %d', etc.winheight)
+  elseif etc.split == 'floating' then
     local winid = a.nvim_open_win(bufnr, true, {
       relative='editor',
-      row=cfg.winrow,
-      col=cfg.wincol,
-      width=cfg.winwidth,
-      height=cfg.winheight,
+      anchor='NW',
+      row=0,  -- etc.winrow
+      col=0,  -- etc.wincol
+      width=etc.winwidth,
+      height=etc.winheight,
     })
   else
     command = 'buffer'
   end
 
-  if cfg.split ~= 'floating' then
+  if etc.split ~= 'floating' then
     local direction = 'topleft'
-    if cfg.direction == 'botright' then
+    if etc.direction == 'botright' then
       direction = 'botright'
     end
     str = string.format("silent keepalt %s %s %s %d", direction, vertical, command, bufnr)
@@ -202,6 +214,8 @@ end
 function M.buf_attach(buf)
   a.nvim_buf_attach(buf, false, { on_detach = function()
     rpcrequest('function', {"on_detach", buf}, true)
+    M.alive_buf_cnt = M.alive_buf_cnt - 1
+    M.etc_options[buf] = nil
   end })
 end
 
@@ -627,6 +641,7 @@ local function initialize()
   M.tree_histories = {}
 end
 
+-- options = core + etc
 local function user_var_options()
   return {
     wincol=math.modf(vim.o.columns/4),
@@ -637,25 +652,17 @@ function user_options()
   return vim.tbl_extend('force', {
     auto_cd=false,
     auto_recursive_level=0,
-    buffer_name='default',
     columns='mark:indent:icon:filename:size',
-    direction='',
     ignored_files='.*',
     listed=false,
-    new=false,
     profile=false,
     resume=false,
     root_marker='[in]: ',
-    search='',
     session_file='',
     show_ignored_files=false,
-    split='no',
     sort='filename',
     toggle=false,
-    winheight=30,
-    winrelative='editor',
-    winwidth=90,
-  }, user_var_options())
+  }, user_var_options(), default_etc_options)
 end
 
 local function internal_options()
@@ -665,17 +672,18 @@ local function internal_options()
   cmd('delmarks >')
   return {
     cursor=fn.line('.'),
-    drives={},
+    -- drives={},
     prev_bufnr=fn.bufnr('%'),
     prev_winid=fn.win_getid(),
     visual_start=s,
     visual_end=e,
   }
 end
--- 一些设置没有必要传输, action_ctx/setting_ctx
+-- Transfer action context to server when perform action
+-- Transfer core options when _tree_start
 local function init_context(user_context)
   local buffer_name = user_context.buffer_name or 'default'
-  local context = user_var_options()
+  local context = {}  -- TODO: move user_var_options to etc options
   local custom = vim.deepcopy(custom.get())
   -- NOTE: Avoid empty custom.column being converted to vector
   if vim.tbl_isempty(custom.column) then
@@ -702,13 +710,32 @@ end
 -------------------- end of init.vim --------------------
 
 -------------------- start of tree.vim --------------------
+-- NOTE: The buffer creation is done by the lua side
+M.alive_buf_cnt = 0
+M.etc_options = {}
+local count = 0
 function start(paths, user_context)
   initialize()
   local context = init_context(user_context)
   local paths = fn.map(paths, "fnamemodify(v:val, ':p')")
   if #paths == 0 then
     paths = {fn.expand('%:p:h')}
   end
+  if M.alive_buf_cnt < 1 or user_context.new then
+    local buf = a.nvim_create_buf(false, true)
+    local bufname = "Tree-" .. tostring(count)
+    a.nvim_buf_set_name(buf, bufname);
+    count = count + 1
+    M.alive_buf_cnt = M.alive_buf_cnt + 1
+    local etc_opts = vim.deepcopy(default_etc_options)
+    for k, v in pairs(default_etc_options) do
+      if context[k] then
+        etc_opts[k] = context[k]
+      end
+    end
+    M.etc_options[buf] = etc_opts
+    context.bufnr = buf
+  end
   rpcrequest('_tree_start', {paths, context}, false)
   -- TODO: 检查 search 是否存在
   -- if context['search'] !=# ''

src/app/app.cpp

@@ -63,18 +63,10 @@ void App::init_highlight()
     }
 }
 
-void App::createTree(string &path)
+void App::createTree(int bufnr, string &path)
 {
-    static int count = 0;
     auto &b = m_nvim;
 
-    int bufnr = b->create_buf(false, true);
-    char name[64];
-    sprintf(name, "Tree-%d", count);
-    string bufname(name);
-    b->async_buf_set_name(bufnr, bufname);
-    count++;
-
     int ns_id = b->create_namespace("tree_icon");
     if (path.back() == '/')  // path("/foo/bar/").parent_path();    // "/foo/bar"
         path.pop_back();
@@ -90,9 +82,7 @@ void App::createTree(string &path)
 
     b->async_buf_set_option(bufnr, "buflisted", tree.cfg.listed);
     nvim::Dictionary tree_cfg{
-        {"winwidth", tree.cfg.winwidth}, {"winheight", tree.cfg.winheight}, {"split", tree.cfg.split.c_str()},
-        {"new", tree.cfg.new_},          {"toggle", tree.cfg.toggle},       {"direction", tree.cfg.direction.c_str()},
-        {"winrow", tree.cfg.winrow},     {"wincol", tree.cfg.wincol},
+        {"toggle", tree.cfg.toggle},
     };
     b->execute_lua("tree.resume(...)", {m_ctx.prev_bufnr, tree_cfg});
 }
@@ -171,10 +161,10 @@ void App::handleRequest(nvim::NvimRPC &rpc, uint64_t msgid, const string &method
         m_cfgmap = args[1].as_multimap();
         auto *b = m_nvim;
 
-        auto search = m_cfgmap.find("new");
-        if (trees.size() < 1 || (search != m_cfgmap.end() && search->second.as_bool())) {
+        auto search = m_cfgmap.find("bufnr");
+        if (search != m_cfgmap.end()) {
             // TODO: createTree时存在request和此处的response好像产生冲突
-            createTree(path);
+            createTree(search->second.as_uint64_t(), path);
         } else {
             // NOTE: Resume tree buffer by default.
             // TODO: consider to use treebufs[0]
@@ -197,10 +187,7 @@ void App::handleRequest(nvim::NvimRPC &rpc, uint64_t msgid, const string &method
                 bufnrs.push_back(item);
 
             Map tree_cfg = {
-                {"winwidth", tree.cfg.winwidth},   {"winheight", tree.cfg.winheight},
-                {"split", tree.cfg.split.c_str()}, {"new", tree.cfg.new_},
-                {"toggle", tree.cfg.toggle},       {"direction", tree.cfg.direction.c_str()},
-                {"winrow", tree.cfg.winrow},       {"wincol", tree.cfg.wincol},
+                {"toggle", tree.cfg.toggle},
             };
 
             b->async_execute_lua("tree.resume(...)", {bufnrs, tree_cfg});

src/app/app.h

@@ -12,7 +12,7 @@ class App
    public:
     App(nvim::Nvim *, int);
 
-    void createTree(string &path);
+    void createTree(int bufnr, string &path);
     void handleNvimNotification(const string &method, const vector<nvim::Object> &args);
     void handleRequest(nvim::NvimRPC &rpc, uint64_t msgid, const string &method, const vector<nvim::Object> &args);
     void init_highlight();

src/app/column.cpp

@@ -367,20 +367,10 @@ void Config::update(const Map &ctx)
         // cout << __FUNCTION__ << k << " type: "<< type_name(v)<< endl;
         if (k == "auto_recursive_level") {
             auto_recursive_level = v.as_int64_t();
-        } else if (k == "wincol") {
-            wincol = v.as_uint64_t();
-        } else if (k == "winheight") {
-            winheight = v.as_int64_t();
-        } else if (k == "winrow") {
-            winrow = v.as_uint64_t();
-        } else if (k == "winwidth") {
-            winwidth = v.as_uint64_t();
         } else if (k == "auto_cd") {
             auto_cd = v.as_bool();
         } else if (k == "listed") {
             listed = v.as_bool();
-        } else if (k == "new") {
-            new_ = v.as_bool();
         } else if (k == "profile") {
             profile = v.as_bool();
         } else if (k == "show_ignored_files") {
@@ -389,10 +379,6 @@ void Config::update(const Map &ctx)
             toggle = v.as_bool();
         } else if (k == "root_marker") {
             root_marker = v.as_string();
-        } else if (k == "buffer_name") {
-            buffer_name = v.as_string();
-        } else if (k == "direction") {
-            direction = v.as_string();
         } else if (k == "ignored_files") {
             ignored_files = v.as_string();
         } else if (k == "search") {
@@ -401,10 +387,6 @@ void Config::update(const Map &ctx)
             session_file = v.as_string();
         } else if (k == "sort") {
             sort = v.as_string();
-        } else if (k == "winrelative") {
-            winrelative = v.as_string();
-        } else if (k == "split") {
-            split = v.as_string();
         } else if (k == "columns") {
             vector<string> tokens;
             ssplit(v.as_string(), tokens, ":");

src/app/column.h

@@ -132,16 +132,7 @@ class Config
     string sort = "";
 
     bool listed = false;
-    string buffer_name = "default";
-
-    string direction = "";
-    string split = "no";  // {"vertical", "horizontal", "no", "tab", "floating"}
-    string winrelative = "editor";
-    int winheight = 30;
-    int winwidth = 50;
-    int wincol = 0;
-    int winrow = 0;
-    bool new_ = false;
+
     bool toggle = false;
 
     int filename_colstop = 40;