Disable touchpad via udev when mouse is plugged

01-touchpad.rules

# Disable touchpad when mouse is plugged
# file: /etc/udev/rules.d/01-touchpad.rules

ACTION=="add", ENV{ID_CLASS}="mouse",ENV{DISPLAY}=":0.0", ENV{XAUTHORITY}="/home/salaros/.Xauthority", RUN+="/bin/sh -c 'xinput disable DELL0767:00\ 06CB:7E92\ Touchpad'"
ACTION=="remove", ENV{ID_CLASS}="mouse", ENV{DISPLAY}=":0.0", ENV{XAUTHORITY}="/home/salaros/.Xauthority", RUN+="/bin/sh -c 'xinput enable DELL0767:00\ 06CB:7E92\ Touchpad'"

rc.local

#!/bin/sh -e

# ....

# Checks if the mouse is connected and "re-adds" it in order to trigger udev rule
[[ -c /dev/input/mouse0 ]] && udevadm trigger --action=add --name-match=input/mouse0

exit 0

xinput.sh

$ xinput 
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad              	id=16	[slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                   	id=10	[slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                   	id=18	[slave  pointer  (2)]
⎜   ↳ DELL0767:00 06CB:7E92 Touchpad          	id=13	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ Power Button                            	id=6	[slave  keyboard (3)]
    ↳ Video Bus                               	id=7	[slave  keyboard (3)]
    ↳ Power Button                            	id=8	[slave  keyboard (3)]
    ↳ Sleep Button                            	id=9	[slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate         	id=12	[slave  keyboard (3)]
    ↳ Dell WMI hotkeys                        	id=14	[slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard            	id=15	[slave  keyboard (3)]
    ↳ DELL Wireless hotkeys                   	id=17	[slave  keyboard (3)]
    ↳ Logitech USB Receiver                   	id=11	[slave  keyboard (3)]