Quitter clone for Linux

autoclose.py

#!/usr/bin/env python3

# Linux-compatible clone of Quitter for Mac https://marco.org/apps#quitter
# implementation inspired by: https://github.com/acenturyandabit/mini-miza/blob/master/autohide.py

import subprocess
import time
import os

apps = {
    "slack": 600,
    "discord": 600,
    "element": 600,
}

INTERVAL = 5

FNULL = open(os.devnull, "w")


def get(cmd):
    try:
        return subprocess.check_output(cmd, stderr=FNULL).decode("utf-8").strip()
    except subprocess.CalledProcessError:
        return None


idle_times = {}

while True:
    time.sleep(INTERVAL)
    for app in apps.keys():
        windows = get(["xdotool", "search", "--all", "--classname", app])
        if windows:
            windows = windows.splitlines()
            for w in windows:
                if w in idle_times:
                    idle_times[w] += INTERVAL
                    # if window has been unfocused for too long, quit app
                    if idle_times[w] >= apps[app]:
                        subprocess.Popen(["xdotool", "windowquit", w])
                        idle_times.pop(w, None)
                else:
                    idle_times[w] = 0

            # if window is focused, reset its timer
            if get(["xdotool", "getactivewindow"]) in windows:
                idle_times[get(["xdotool", "getactivewindow"])] = 0