Update variable with tabs count

[pwsandoval]

My idea was to change the window_decorations property conditionally, if number of tabs is 1, show the default vlaor "TITLE | RESIZE", but if it's 2 or more change to "RESIZE".

I combine this with hide_tab_bar_if_only_one_tab = true which hides the window bar, which is perfect when viewing the tabs (2 tabs or more, but not when I have 1 tab or open terminal)

I tried to first get the total number of tabs in the current window but it fails (return nil), this is what I got,

-- To show window bar
local current_window_id = nil
wezterm.on('window-focus-changed', function(window, pane)
   current_window_id = window:window_id()
end)

local function get_tabs_count()
   local current_window = wezterm.mux.get_window(current_window_id)
   local tabs = current_window:tabs()
   return #tabs
end

This other work for me

local mux = wezterm.mux
local windows = mux.all_windows()[1]:tabs()
print(#windows)

But i don't want to use manual value 1 for the window as it wouldn't work if i open more windows, also i get a warning saying:

caused by: cannot get Mux: not running on the mux thread?

[wez]

Each thread, and different execution contexts, may run with a fresh lua state.
As such, you cannot share data by storing it directly in global variables.

You can use https://wezfurlong.org/wezterm/config/lua/wezterm/GLOBAL.html for sharing data in that way.

However, because there can be multiple windows, it doesn't make a lot of sense to try to track the window in any kind of global state.

wezterm always passes the current window to the various event callbacks; you should always use the window parameter that is passed to them when you want to operate on the current window.

[Risinggoblin]

My idea was to change the window_decorations property conditionally, if number of tabs is 1, show the default vlaor "TITLE | RESIZE", but if it's 2 or more change to "RESIZE".

I combine this with hide_tab_bar_if_only_one_tab = true which hides the window bar, which is perfect when viewing the tabs (2 tabs or more, but not when I have 1 tab or open terminal)

I tried to first get the total number of tabs in the current window but it fails (return nil), this is what I got,

-- To show window bar
local current_window_id = nil
wezterm.on('window-focus-changed', function(window, pane)
   current_window_id = window:window_id()
end)

local function get_tabs_count()
   local current_window = wezterm.mux.get_window(current_window_id)
   local tabs = current_window:tabs()
   return #tabs
end

This other work for me

local mux = wezterm.mux
local windows = mux.all_windows()[1]:tabs()
print(#windows)

But i don't want to use manual value 1 for the window as it wouldn't work if i open more windows, also i get a warning saying:

caused by: cannot get Mux: not running on the mux thread?

I am trying to implement something similar, what did you end up going with for getting tab count and and then dynamically setting window decorations?