Temporarily show tab bar on tab creation/closing/activation/etc

[rumly111]

What Operating System(s) are you running on?

Linux X11

Which Wayland compositor or X11 Window manager(s) are you using?

No response

WezTerm version

20240203-110809-5046fc22

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I want my tab bar to be hidden by default, but when the "tab situation" changes, it should pop up for a few seconds.

For example, when I open, close, or activate the tab, the tab bar appears for 2.5 seconds, then disappears.

I more or less made the tab bar appear when opening and switching with super+num:

local toggle_tabbar_timeout = 2.5

config.keys = {
  {
    key = 'T',
    mods = 'CTRL|SHIFT',
    action = wezterm.action_callback(function(window, _)
      local mux_window = window:mux_window()
      mux_window:spawn_tab {}
      local config_overrides = window:get_config_overrides() or {}
      if config_overrides.enable_tab_bar then
        return
      end
      config_overrides.enable_tab_bar = true
      window:set_config_overrides(config_overrides)
      wezterm.time.call_after(toggle_tabbar_timeout, function()
          config_overrides.enable_tab_bar = false
          window:set_config_overrides(config_overrides)
      end)
    end)
  },
}

for i = 1, 9 do
  table.insert(config.keys, {
    key = tostring(i),
    mods = 'SUPER',
    action = wezterm.action_callback(function(window, _)
      local config_overrides = window:get_config_overrides() or {}
      if not config_overrides.enable_tab_bar then
        config_overrides.enable_tab_bar = true
        window:set_config_overrides(config_overrides)
        wezterm.time.call_after(toggle_tabbar_timeout, function()
            config_overrides.enable_tab_bar = false
            window:set_config_overrides(config_overrides)
        end)
      end
      local mux_window = window:mux_window()
      mux_window:tabs()[i]:activate()
    end)
  })
end

But there is a lot of ways to switch tabs, for example SUPER+num, CTRL+SHIFT+num, CTRL+PageUp/PageDown and more. So I feel my config will become bloated if I implement all those key binds, with a lot of duplicate code. Is there a way to simplify it? Maybe create a wrapper for the corresponding actions, or something else?

Also, when the tab closes because the shell terminates (mostly when I press ctrl+d), I need to detect somehow it and temporarily display tab bar. How to do it?