open dap-ui in a new buffer opposed to splits in the current tab

[sivaplaysmC]

Dear Sir , I respect your effort in making this plugin

I feel it would be better if i can open the dap-ui elements in a new tab instead of the current tab

Thank you

[rcarriga]

You can do this manually, there's no need for nvim-dap-ui to control this. For example

  local debug_win = nil
  local function open_in_tab()
    if debug_win and vim.api.nvim_win_is_valid(debug_win) then
      vim.api.nvim_set_current_win(debug_win)
      return
    end

    vim.cmd("tabedit %")
    debug_win = vim.fn.win_getid()
    require("dapui").open()
  end

  dap.listeners.after["event_thread"]["arctgx-dap-tab"] = function(_, body)
    if body.reason == "started" then
      open_in_tab()
    end
  end

[serhez]

I agree with this being the default behaviour, it makes sense to have debugging in a new workspace/tab and coming back to your developing workspace/tab after you are finished debugging. That being said, it's no big deal given we can just configure it as @rcarriga said 😃

[serhez]

Also, for any interested parties, I have a more complete solution here that seems to work:

local dap_ui = require("dapui")

local debug_win = nil
local debug_tab = nil

local function open_in_tab()
    if debug_win and vim.api.nvim_win_is_valid(debug_win) then
        vim.api.nvim_set_current_win(debug_win)
        return
    end

    vim.cmd("tabedit %")
    debug_win = vim.fn.win_getid()
    debug_tab = vim.api.nvim_win_get_tabpage(debug_win)
    dap_ui.open()
end

local function close_tab()
    dap_ui.close()

    if debug_tab and vim.api.nvim_tabpage_is_valid(debug_tab) then
        vim.api.nvim_exec("tabclose " .. debug_tab, false)
    end

    debug_win = nil
    debug_tab = nil
end

-- Attach DAP UI to DAP events
dap.listeners.after.event_initialized["dapui_config"] = function()
    open_in_tab()
end
dap.listeners.before.event_terminated["dapui_config"] = function()
    close_tab()
end
dap.listeners.before.event_exited["dapui_config"] = function()
    close_tab()
end

[daephx]

I was looking for this sort of functionality to prevent clutter and window resizing when activating dapui. Thanks @serhez, saved me some time setting this up myself but I've gotten some errors with your code.

I'm unsure if this is an oddity of my personal config or an oversight. Do you not experience the following error on subsequent launches of the debugger?

When first running the close_tab function, everything is good but on subsequent runs tabclose returning the following error.

Error executing vim.schedule lua callback: /home/daephx/.config/nvim/lua/plugins/dap/ui.lua:92: Vim(tabclose):E474: Invalid argument: tabclose 8
stack traceback:
        [C]: in function 'nvim_exec'
        /home/daephx/.config/nvim/lua/plugins/dap/ui.lua:92: in function 'close_tab'
        /home/daephx/.config/nvim/lua/plugins/dap/ui.lua:107: in function 'c'
        ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:857: in function <...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:853>

The tabpage value increments over time with multiple tab pages and tabclose seems to require the tab number. Shouldn't there be something like another variable to get the tab number to prevent this?:

local debug_win = nil
local debug_tab = nil
local debug_tabnr = nil

local function open_in_tab()
  if debug_win and vim.api.nvim_win_is_valid(debug_win) then
    vim.api.nvim_set_current_win(debug_win)
    return
  end

  vim.cmd('tabedit %')
  debug_win = vim.fn.win_getid()
  debug_tab = vim.api.nvim_win_get_tabpage(debug_win)
  debug_tabnr = vim.api.nvim_tabpage_get_number(debug_tab)

  dapui.open()
end

local function close_tab()
  dapui.close()

  if debug_tab and vim.api.nvim_tabpage_is_valid(debug_tab) then
    vim.api.nvim_exec('tabclose ' .. debug_tabnr, false)
  end

  debug_win = nil
  debug_tab = nil
  debug_tabnr = nil
end

-- Attach DAP UI to DAP events
dap.listeners.after.event_initialized['dapui_config'] = function()
  open_in_tab()
end
dap.listeners.before.event_terminated['dapui_config'] = function()
  close_tab()
end
dap.listeners.before.event_exited['dapui_config'] = function()
  close_tab()
end

This works for me without any errors.