Feature: show diagnostics info summary in scrollbar area

README.md

@@ -204,6 +204,7 @@ require'navigator'.setup({
   -- please check mapping.lua for all keymaps
   treesitter_analysis = true, -- treesitter variable context
   code_action_prompt = {enable = true, sign = true, sign_priority = 40, virtual_text = true},
+  diag_scroll_bar_sign = nil, -- experimental: set to {'╍', 'ﮆ'} to enable diagnostic status in scroll bar area
   icons = {
     -- Code action
     code_action_icon = " ",
@@ -329,6 +330,15 @@ The plugin can be loaded lazily (packer `opt = true` ), And it will check if opt
 
 The terminal will need to be able to output nerdfont and emoji correctly. I am using Kitty with nerdfont (Victor Mono).
 
+
+## Integration with lspinstall
+If you'd like to only use the lsp servers installed by lspinstall. Please set
+
+```lua
+lspinstall = false
+```
+In the config
+
 ## Usage
 
 Please refer to lua/navigator/lspclient/mapping.lua on key mappings. Should be able to work out-of-box.

lua/navigator.lua

@@ -27,6 +27,7 @@ _NgConfigValues = {
     }
   },
   lspinstall = false, -- set to true if you would like use the lsp installed by lspinstall
+  diag_scroll_bar_sign = nil, -- set to {'╍', 'ﮆ'} to enable diagnostic status in scroll bar area
   icons = {
     -- Code action
     code_action_icon = " ",

lua/navigator/diagnostics.lua

@@ -1,19 +1,87 @@
 local gui = require "navigator.gui"
 local diagnostic_list = {}
 
+_NG_VT_NS = vim.api.nvim_create_namespace("navigator_lua")
 local util = require "navigator.util"
 local log = util.log
+local trace = require"guihua.log".trace
 local error = util.error
 
 local path_sep = require"navigator.util".path_sep()
 local path_cur = require"navigator.util".path_cur()
 diagnostic_list[vim.bo.filetype] = {}
 
+local function error_marker(result, client_id)
+  if _NgConfigValues.diag_scroll_bar_sign == nil then
+    return
+  end
+  local first_line = vim.fn.line('w0')
+  local ft = vim.fn.expand('%:h:t') -- get the current file extension
+
+  local bufnr = vim.uri_to_bufnr(result.uri)
+  if bufnr ~= vim.fn.bufnr() then
+    -- log("not same buf", client_id, result.uri, bufnr, vim.fn.bufnr())
+    return
+  end
+
+  log(result, bufnr)
+
+  if result == nil or result.diagnostics == nil or #result.diagnostics == 0 then
+    local diag_cnt = vim.lsp.diagnostic.get_count(0, [[Error]])
+                         + vim.lsp.diagnostic.get_count(0, [[Warning]])
+    if diag_cnt == 0 then
+      vim.api.nvim_buf_clear_namespace(0, _NG_VT_NS, 0, -1)
+    end
+    return
+  end
+
+  vim.api.nvim_buf_clear_namespace(0, _NG_VT_NS, 0, -1)
+
+  -- total line num of current buffer
+  local winid = vim.fn.win_getid(vim.fn.winnr())
+  local total_num = vim.fn.getbufinfo(vim.fn.winbufnr(winid))[1].linecount
+  -- window size of current buffer
+  local wwidth = vim.fn.winwidth(winid)
+  local wheight = vim.fn.winheight(winid)
+
+  local pos = {}
+  -- pos of virtual text
+  for _, diag in pairs(result.diagnostics) do
+    if diag.range and diag.range.start and diag.range.start.line then
+      local p = diag.range.start.line
+      p = util.round(p * wheight / math.max(wheight, total_num))
+      if pos[#pos] and pos[#pos].line == p then
+        pos[#pos] = {
+          line = p,
+          sign = _NgConfigValues.diag_scroll_bar_sign[2],
+          severity = diag.severity
+        }
+      else
+        table.insert(pos, {
+          line = p,
+          sign = _NgConfigValues.diag_scroll_bar_sign[1],
+          severity = diag.severity
+        })
+      end
+    end
+    log("pos", pos, diag.range.start)
+  end
+
+  for i, s in pairs(pos) do
+    local hl = 'ErrorMsg'
+    if s.severity > 1 then
+      hl = 'WarningMsg'
+    end
+    vim.api.nvim_buf_set_extmark(bufnr, _NG_VT_NS, s.line + first_line, -1,
+                                 {virt_text = {{s.sign, hl}}, virt_text_pos = 'right_align'})
+  end
+end
+
 local diag_hdlr = function(err, method, result, client_id, bufnr, config)
   -- log(result)
-  vim.lsp.diagnostic.on_publish_diagnostics(err, method, result, client_id, bufnr, config)
   if err ~= nil then
     log(err, config)
+    return
   end
   local cwd = vim.fn.getcwd(0)
   local ft = vim.bo.filetype
@@ -22,7 +90,10 @@ local diag_hdlr = function(err, method, result, client_id, bufnr, config)
   end
   -- vim.lsp.diagnostic.clear(vim.fn.bufnr(), client.id, nil, nil)
 
+  vim.lsp.diagnostic.on_publish_diagnostics(err, method, result, client_id, bufnr, config)
   local uri = result.uri
+
+  -- log("diag: ", result, client_id)
   if result and result.diagnostics then
     local item_list = {}
     for _, v in ipairs(result.diagnostics) do
@@ -58,7 +129,12 @@ local diag_hdlr = function(err, method, result, client_id, bufnr, config)
     end
     -- local old_items = vim.fn.getqflist()
     diagnostic_list[ft][uri] = item_list
+
+    error_marker(result, client_id)
+  else
+    vim.api.nvim_buf_clear_namespace(0, _NG_VT_NS, 0, -1)
   end
+
 end
 
 local M = {}
@@ -120,4 +196,8 @@ M.set_diag_loclist = function()
   end
 end
 
+function M.clear_blame_VT() -- important for clearing out the text when our cursor moves
+  vim.api.nvim_buf_clear_namespace(0, _NG_VT_NS, 0, -1)
+end
+
 return M

lua/navigator/util.lua

@@ -23,6 +23,10 @@ M.path_cur = function()
   end
 end
 
+M.round = function(x)
+  return math.floor(x + 0.5)
+end
+
 function M.get_data_from_file(filename, startLine)
   local displayLine
   if startLine < 3 then