diff --git a/README.md b/README.md
index ab080f2..f9050dd 100644
--- a/README.md
+++ b/README.md
@@ -377,6 +377,7 @@ require'navigator'.setup({
 | n    | gG              | show diagnostic for all buffers                            |
 | n    | ]d              | next diagnostic                                            |
 | n    | [d              | previous diagnostic                                        |
+| n    | \<Leader\> dt   | diagnostic toggle(enable/disable)                          |
 | n    | ]r              | next treesitter reference/usage                            |
 | n    | [r              | previous treesitter reference/usage                        |
 | n    | \<Sapce\> wa    | add workspace folder                                       |
diff --git a/lua/navigator.lua b/lua/navigator.lua
index 60bbc63..8c554bf 100644
--- a/lua/navigator.lua
+++ b/lua/navigator.lua
@@ -159,7 +159,7 @@ end
 M.setup = function(cfg)
   extend_config(cfg)
 
-  vim.cmd([[autocmd FileType * lua require'navigator.lspclient.clients'.setup()]]) -- BufWinEnter BufNewFile,BufRead ?
+  vim.cmd([[autocmd FileType,BufEnter * lua require'navigator.lspclient.clients'.setup()]]) -- BufWinEnter BufNewFile,BufRead ?
   -- local log = require"navigator.util".log
   -- log(debug.traceback())
   -- log(cfg, _NgConfigValues)
diff --git a/lua/navigator/codeAction.lua b/lua/navigator/codeAction.lua
index 14af099..146c04c 100644
--- a/lua/navigator/codeAction.lua
+++ b/lua/navigator/codeAction.lua
@@ -12,75 +12,76 @@ local sign_name = "NavigatorLightBulb"
 --- `codeAction/resolve`
 -- from neovim buf.lua, change vim.ui.select to gui
 local function on_code_action_results(results, ctx)
+  local trace = log
   local action_tuples = {}
-  for client_id, result in pairs(results) do
-    for _, action in pairs(result.result or {}) do
-      table.insert(action_tuples, {client_id, action})
-    end
-  end
-  if #action_tuples == 0 then
-    vim.notify('No code actions available', vim.log.levels.INFO)
-    return
-  end
 
-  trace(action_tuples, ctx)
   local data = {"   Auto Fix  <C-o> Apply <C-e> Exit"}
-  for i, act in pairs(action_tuples) do
-    local title = 'apply action'
-    local action = act[2]
-    trace(action)
-    if action.edit and action.edit.title then
-      local edit = action.edit
-      title = edit.title:gsub("\n", " ↳ ")
-    elseif action.title then
-      title = action.title:gsub("\n", " ↳ ")
-    elseif action.command and action.command.title then
-      title = action.command.title:gsub("\n", " ↳ ")
-    end
 
-    local edit = action.edit or {}
-    -- trace(edit.documentChanges)
-    if edit.documentChanges or edit.changes then
-      local changes = edit.documentChanges or edit.changes
-      -- trace(action.edit.documentChanges)
-      for _, change in pairs(changes or {}) do
-        -- trace(change)
-        if change.edits then
-          title = title .. " [newText:]"
-          for _, ed in pairs(change.edits) do
-            -- trace(ed)
-            if ed.newText and ed.newText ~= "" then
-              local newText = ed.newText:gsub("\n\t", " ↳ ")
-              newText = newText:gsub("\n", "↳")
-              title = title .. " (" .. newText
-              if ed.range then
-                title = title .. " line: " .. tostring(ed.range.start.line) .. ")"
-              else
-                title = title .. ")"
+  for client_id, result in pairs(results) do
+    for i, action in pairs(result.result or {}) do
+      local title = 'apply action'
+      trace(action)
+      if action.edit and action.edit.title then
+        local edit = action.edit
+        title = edit.title:gsub("\r\n", " ↳ ")
+        title = title:gsub("\n", " ↳ ")
+      elseif action.title then
+        title = action.title:gsub("\r\n", " ↳ ")
+        title = title:gsub("\n", " ↳ ")
+      elseif action.command and action.command.title then
+        title = action.command.title:gsub("\n", " ↳ ")
+        title = title:gsub("\n", " ↳ ")
+      end
+
+      local edit = action.edit or {}
+      -- trace(edit.documentChanges)
+      if edit.documentChanges or edit.changes then
+        local changes = edit.documentChanges or edit.changes
+        -- trace(action.edit.documentChanges)
+        for _, change in pairs(changes or {}) do
+          -- trace(change)
+          if change.edits then
+            title = title .. " [newText:]"
+            for _, ed in pairs(change.edits) do
+              -- trace(ed)
+              if ed.newText and ed.newText ~= "" then
+                local newText = ed.newText:gsub("\n\t", " ↳ ")
+                newText = newText:gsub("\n", "↳")
+                title = title .. " (" .. newText
+                if ed.range then
+                  title = title .. " line: " .. tostring(ed.range.start.line) .. ")"
+                else
+                  title = title .. ")"
+                end
               end
             end
+          elseif change.newText and change.newText ~= "" then
+            local newText = change.newText:gsub("\"\n\t\"", " ↳  ")
+            newText = newText:gsub("\n", "↳")
+            title = title .. " (newText: " .. newText
+            if change.range then
+              title = title .. " line: " .. tostring(change.range.start.line) .. ")"
+            else
+              title = title .. ")"
+            end
           end
-        elseif change.newText and change.newText ~= "" then
-          local newText = change.newText:gsub("\"\n\t\"", " ↳  ")
-          newText = newText:gsub("\n", "↳")
-          title = title .. " (newText: " .. newText
-          if change.range then
-            title = title .. " line: " .. tostring(change.range.start.line) .. ")"
-          else
-            title = title .. ")"
-          end
-        end
 
+        end
       end
-    end
 
-    title = title:gsub("\n", "\\n")
-    title = string.format("[%d] %s", i, title)
-    table.insert(data, title)
-    action_tuples[i].display_title = title
+      title = string.format("[%d] %s", i, title)
+      table.insert(data, title)
+      table.insert(action_tuples, {client_id, action, title, i})
+    end
   end
 
   log(action_tuples)
+  log(data)
+
+  if #action_tuples == 0 then
+    vim.notify('No code actions available', vim.log.levels.INFO)
+    return
+  end
   local width = 42
   for _, str in ipairs(data) do
     if #str > width then
@@ -102,17 +103,12 @@ local function on_code_action_results(results, ctx)
     on_confirm = function(item)
       trace(item)
       local action_chosen = nil
-      for key, value in pairs(action_tuples) do
-        if value.display_title == item then
+      for _, value in pairs(action_tuples) do
+        if value[3] == item then
           action_chosen = value
+          return require('navigator.lspwrapper').on_user_choice(action_chosen, ctx)
         end
       end
-      if action_chosen == nil then
-        log("no match for ", item, action_tuples)
-        return
-      end
-      require('navigator.lspwrapper').on_user_choice(action_chosen, ctx)
-
     end,
     on_move = function(pos)
       trace(pos)
@@ -126,66 +122,12 @@ local function on_code_action_results(results, ctx)
 end
 
 local diagnostic = vim.diagnostic or vim.lsp.diagnostic
-code_action.code_action_handler = util.mk_handler(function(err, actions, ctx, cfg)
-  if actions == nil or vim.tbl_isempty(actions) or err then
-    log("No code actions available")
+code_action.code_action_handler = util.mk_handler(function(err, results, ctx, cfg)
+  if err ~= nil then
+    log("code action err", err, results, ctx, cfg)
     return
   end
-
-  log(actions, ctx)
-  local data = {"   Auto Fix  <C-o> Apply <C-e> Exit"}
-  for i, action in ipairs(actions) do
-    local title = action.title:gsub("\r\n", "\\r\\n")
-    title = title:gsub("\n", "\\n")
-    title = string.format("[%d] %s", i, title)
-    table.insert(data, title)
-    actions[i].display_title = title
-  end
-  local width = 42
-  for _, str in ipairs(data) do
-    if #str > width then
-      width = #str
-    end
-  end
-
-  local divider = string.rep('─', width + 2)
-
-  table.insert(data, 2, divider)
-  local apply = require('navigator.lspwrapper').apply_action
-  local function apply_action(action)
-    local action_chosen = nil
-    for key, value in pairs(actions) do
-      if value.display_title == action then
-        action_chosen = value
-      end
-    end
-
-    if action_chosen == nil then
-      log("no match for ", action, actions)
-      return
-    end
-    apply(action_chosen)
-  end
-
-  local listview = gui.new_list_view {
-    items = data,
-    width = width + 4,
-    loc = "top_center",
-    relative = "cursor",
-    rawdata = true,
-    data = data,
-    on_confirm = function(pos)
-      trace(pos)
-      apply_action(pos)
-    end,
-    on_move = function(pos)
-      trace(pos)
-      return pos
-    end
-  }
-
-  log("new buffer", listview.bufnr)
-  vim.api.nvim_buf_add_highlight(listview.bufnr, -1, 'Title', 0, 0, -1)
+  on_code_action_results(results, ctx)
 end)
 
 -- https://github.com/glepnir/lspsaga.nvim/blob/main/lua/lspsaga/codeaction.lua
@@ -219,8 +161,10 @@ end
 local function _update_sign(line)
 
   if vim.tbl_isempty(vim.fn.sign_getdefined(sign_name)) then
-    vim.fn.sign_define(sign_name,
-                       {text = config.icons.code_action_icon, texthl = "LspDiagnosticsSignHint"})
+    vim.fn.sign_define(sign_name, {
+      text = config.icons.code_action_icon,
+      texthl = "LspDiagnosticsSignHint"
+    })
   end
   local winid = get_current_winid()
   if code_action[winid] == nil then
diff --git a/lua/navigator/definition.lua b/lua/navigator/definition.lua
index 1e175ae..666e321 100644
--- a/lua/navigator/definition.lua
+++ b/lua/navigator/definition.lua
@@ -104,9 +104,8 @@ local function def_preview(timeout_ms)
   local width = 40
   for key, value in pairs(definition) do
     -- log(key, value, width)
-    width = math.max(width, #value)
-    width = math.min(90, width)
-
+    width = math.max(width, #value + 4)
+    width = math.min(120, width)
   end
   definition = vim.list_extend({"    [" .. get_symbol() .. "] Definition: "}, definition)
   local filetype = vim.api.nvim_buf_get_option(bufnr, "filetype")
@@ -116,7 +115,7 @@ local function def_preview(timeout_ms)
     relative = "cursor",
     style = "minimal",
     ft = filetype,
-    width = width,
+    rect = {width = width, height = #definition + 2},
     data = definition,
     enter = true,
     border = _NgConfigValues.border or "shadow"
diff --git a/lua/navigator/diagnostics.lua b/lua/navigator/diagnostics.lua
index 430af0b..a260da1 100644
--- a/lua/navigator/diagnostics.lua
+++ b/lua/navigator/diagnostics.lua
@@ -287,6 +287,15 @@ M.hide_diagnostic = function()
   end
 end
 
+M.toggle_diagnostics = function()
+  if M.diagnostic_enabled then
+    M.diagnostic_enabled = false
+    return vim.diagnostic.disable()
+  end
+  vim.diagnostic.enable()
+  M.diagnostic_enabled = true
+end
+
 M.show_buf_diagnostics = function()
   if diagnostic_list[vim.bo.filetype] ~= nil then
     -- log(diagnostic_list[vim.bo.filetype])
diff --git a/lua/navigator/lspclient/clients.lua b/lua/navigator/lspclient/clients.lua
index 9b4a30c..8c8cda6 100644
--- a/lua/navigator/lspclient/clients.lua
+++ b/lua/navigator/lspclient/clients.lua
@@ -546,6 +546,10 @@ local function setup(user_opts)
     log("navigator user setup", user_opts)
   end
   trace(debug.traceback())
+  if #vim.lsp.buf_get_clients() > 0 and user_opts == nil then
+    log("already setup")
+    return
+  end
   user_opts = user_opts or config -- incase setup was triggered from autocmd
 
   if ft == nil then
diff --git a/lua/navigator/lspclient/mapping.lua b/lua/navigator/lspclient/mapping.lua
index 8b4c0a2..241665d 100644
--- a/lua/navigator/lspclient/mapping.lua
+++ b/lua/navigator/lspclient/mapping.lua
@@ -33,6 +33,7 @@ local key_maps = {
   {key = "<Space>D", func = "type_definition()"},
   {key = "gL", func = "require('navigator.diagnostics').show_diagnostics()"},
   {key = "gG", func = "require('navigator.diagnostics').show_buf_diagnostics()"},
+  {key = "<Leader>dt", func = "require('navigator.diagnostics').toggle_diagnostics()"},
   {key = "]d", func = "diagnostic.goto_next({ border = 'rounded', max_width = 80})"},
   {key = "[d", func = "diagnostic.goto_prev({ border = 'rounded', max_width = 80})"},
   {key = "]r", func = "require('navigator.treesitter').goto_next_usage()"},
diff --git a/lua/navigator/lspwrapper.lua b/lua/navigator/lspwrapper.lua
index 7d9b9ef..fc72486 100644
--- a/lua/navigator/lspwrapper.lua
+++ b/lua/navigator/lspwrapper.lua
@@ -409,25 +409,23 @@ function M.locations_to_items(locations, max_items)
   return items, width + 24, second_part -- TODO handle long line?
 end
 
-function M.apply_action(action_chosen)
-  assert(action_chosen ~= nil, "action must not be nil")
-  local bufnr = api.nvim_get_current_buf()
-  local switch = string.format("silent b %d", bufnr)
-  if action_chosen.edit or type(action_chosen.command) == "table" then
-    if action_chosen.edit then
-      vim.lsp.util.apply_workspace_edit(action_chosen.edit)
-    end
-    if type(action_chosen.command) == "table" then
-      -- switch buff
-      vim.cmd(switch)
-      vim.lsp.buf.execute_command(action_chosen.command)
+function M.apply_action(action, ctx, client)
+  assert(action ~= nil, "action must not be nil")
+  if action.edit then
+    vim.lsp.util.apply_workspace_edit(action.edit)
+  end
+  if action.command then
+    local command = type(action.command) == 'table' and action.command or action
+    local fn = client.commands[command.command] or (vim.lsp.commands and vim.lsp.commands[command.command])
+    if fn then
+      local enriched_ctx = vim.deepcopy(ctx)
+      enriched_ctx.client_id = client.id
+      fn(command, enriched_ctx)
+    else
+      M.execute_command(command)
     end
-  else
-    vim.cmd(switch)
-    vim.lsp.buf.execute_command(action_chosen)
   end
-
-  log(action_chosen)
+  log(action)
 
 end